Initial import from the monolithic Qt.

This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12
author: Qt by Nokia <qt-info@nokia.com> 2011-04-27 12:05:43 +0200
committer: axis <qt-info@nokia.com> 2011-04-27 12:05:43 +0200
commit: c4af45c2914381172e1bd7ee528481edaa2fff1a (patch)
tree: 01265e109316fda93845e1c96c5e566d870f51d0 /src/scripttools/debugging
download: qtscript-c4af45c2914381172e1bd7ee528481edaa2fff1a.tar.gz
198 files changed, 28242 insertions, 0 deletions
diff --git a/src/scripttools/debugging/debugging.pri b/src/scripttools/debugging/debugging.pri
new file mode 100644
index 0000000..2082fd0
--- /dev/null
+++ b/src/scripttools/debugging/debugging.pri
@@ -0,0 +1,159 @@
+RESOURCES += $$PWD/scripttools_debugging.qrc
+
+SOURCES += \
+    $$PWD/qscriptdebuggervalue.cpp \
+    $$PWD/qscriptdebuggervalueproperty.cpp \
+    $$PWD/qscriptdebuggercommand.cpp \
+    $$PWD/qscriptdebuggerresponse.cpp \
+    $$PWD/qscriptdebuggerevent.cpp \
+    $$PWD/qscriptdebuggercommandexecutor.cpp \
+    $$PWD/qscriptdebuggercommandschedulerfrontend.cpp \
+    $$PWD/qscriptdebuggerbackend.cpp \
+    $$PWD/qscriptdebuggeragent.cpp \
+    $$PWD/qscriptdebuggerfrontend.cpp \
+    $$PWD/qscriptstdmessagehandler.cpp \
+    $$PWD/qscriptenginedebuggerfrontend.cpp \
+    $$PWD/qscriptdebuggerjob.cpp \
+    $$PWD/qscriptdebuggercommandschedulerjob.cpp \
+    $$PWD/qscriptvalueproperty.cpp \
+    $$PWD/qscriptobjectsnapshot.cpp \
+    $$PWD/qscriptscriptdata.cpp \
+    $$PWD/qscriptxmlparser.cpp \
+    $$PWD/qscriptbreakpointdata.cpp \
+    $$PWD/qscriptdebugger.cpp \
+    $$PWD/qscriptdebuggerconsole.cpp \
+    $$PWD/qscriptdebuggerconsolecommand.cpp \
+    $$PWD/qscriptdebuggerconsolecommandjob.cpp \
+    $$PWD/qscriptdebuggerconsolecommandgroupdata.cpp \
+    $$PWD/qscriptdebuggerconsolecommandmanager.cpp \
+    $$PWD/qscriptcompletiontaskinterface.cpp \
+    $$PWD/qscriptcompletiontask.cpp \
+    $$PWD/qscriptdebuggerconsoleglobalobject.cpp \
+    $$PWD/qscriptdebuggerscriptedconsolecommand.cpp
+
+HEADERS += \
+    $$PWD/qscriptdebuggervalue_p.h \
+    $$PWD/qscriptdebuggervalueproperty_p.h \
+    $$PWD/qscriptdebuggerobjectsnapshotdelta_p.h \
+    $$PWD/qscriptdebuggercommand_p.h \
+    $$PWD/qscriptdebuggercommandschedulerinterface_p.h \
+    $$PWD/qscriptdebuggercommandschedulerfrontend_p.h \
+    $$PWD/qscriptdebuggerresponse_p.h \
+    $$PWD/qscriptdebuggerresponsehandlerinterface_p.h \
+    $$PWD/qscriptdebuggerevent_p.h \
+    $$PWD/qscriptdebuggercommandexecutor_p.h \
+    $$PWD/qscriptdebuggerbackend_p_p.h \
+    $$PWD/qscriptdebuggerbackend_p.h \
+    $$PWD/qscriptdebuggeragent_p_p.h \
+    $$PWD/qscriptdebuggeragent_p.h \
+    $$PWD/qscriptdebuggerfrontend_p_p.h \
+    $$PWD/qscriptdebuggerfrontend_p.h \
+    $$PWD/qscriptmessagehandlerinterface_p.h \
+    $$PWD/qscriptstdmessagehandler_p.h \
+    $$PWD/qscriptenginedebuggerfrontend_p.h \
+    $$PWD/qscriptdebuggerjob_p_p.h \
+    $$PWD/qscriptdebuggerjob_p.h \
+    $$PWD/qscriptdebuggercommandschedulerjob_p_p.h \
+    $$PWD/qscriptdebuggercommandschedulerjob_p.h \
+    $$PWD/qscriptdebuggerjobschedulerinterface_p.h \
+    $$PWD/qscriptdebuggereventhandlerinterface_p.h \
+    $$PWD/qscriptvalueproperty_p.h \
+    $$PWD/qscriptobjectsnapshot_p.h \
+    $$PWD/qscriptscriptdata_p.h \
+    $$PWD/qscriptxmlparser_p.h \
+    $$PWD/qscriptbreakpointdata_p.h \
+    $$PWD/qscriptdebugger_p.h \
+    $$PWD/qscriptdebuggerconsole_p.h \
+    $$PWD/qscriptdebuggerconsolecommand_p_p.h \
+    $$PWD/qscriptdebuggerconsolecommand_p.h \
+    $$PWD/qscriptdebuggerconsolecommandjob_p_p.h \
+    $$PWD/qscriptdebuggerconsolecommandjob_p.h \
+    $$PWD/qscriptdebuggerconsolecommandgroupdata_p.h \
+    $$PWD/qscriptdebuggerconsolecommandmanager_p.h \
+    $$PWD/qscriptdebuggerconsolehistorianinterface_p.h \
+    $$PWD/qscriptcompletionproviderinterface_p.h \
+    $$PWD/qscriptcompletiontaskinterface_p_p.h \
+    $$PWD/qscriptcompletiontaskinterface_p.h \
+    $$PWD/qscriptcompletiontask_p.h \
+    $$PWD/qscripttooltipproviderinterface_p.h \
+    $$PWD/qscriptdebuggerconsoleglobalobject_p.h \
+    $$PWD/qscriptdebuggerscriptedconsolecommand_p.h
+
+SOURCES += \
+    $$PWD/qscriptedit.cpp \
+    $$PWD/qscriptsyntaxhighlighter.cpp
+
+HEADERS += \
+    $$PWD/qscriptedit_p.h \
+    $$PWD/qscriptsyntaxhighlighter_p.h
+
+SOURCES += \
+    $$PWD/qscriptdebuggerconsolewidgetinterface.cpp \
+    $$PWD/qscriptdebuggerconsolewidget.cpp \
+    $$PWD/qscriptdebuggerstackwidgetinterface.cpp \
+    $$PWD/qscriptdebuggerstackwidget.cpp \
+    $$PWD/qscriptdebuggerstackmodel.cpp \
+    $$PWD/qscriptdebuggerscriptswidgetinterface.cpp \
+    $$PWD/qscriptdebuggerscriptswidget.cpp \
+    $$PWD/qscriptdebuggerscriptsmodel.cpp \
+    $$PWD/qscriptdebuggerlocalswidgetinterface.cpp \
+    $$PWD/qscriptdebuggerlocalswidget.cpp \
+    $$PWD/qscriptdebuggerlocalsmodel.cpp \
+    $$PWD/qscriptdebuggercodewidgetinterface.cpp \
+    $$PWD/qscriptdebuggercodewidget.cpp \
+    $$PWD/qscriptdebuggercodeviewinterface.cpp \
+    $$PWD/qscriptdebuggercodeview.cpp \
+    $$PWD/qscriptdebuggercodefinderwidgetinterface.cpp \
+    $$PWD/qscriptdebuggercodefinderwidget.cpp \
+    $$PWD/qscriptdebugoutputwidgetinterface.cpp \
+    $$PWD/qscriptdebugoutputwidget.cpp \
+    $$PWD/qscriptbreakpointswidgetinterface.cpp \
+    $$PWD/qscriptbreakpointswidget.cpp \
+    $$PWD/qscriptbreakpointsmodel.cpp \
+    $$PWD/qscripterrorlogwidgetinterface.cpp \
+    $$PWD/qscripterrorlogwidget.cpp \
+    $$PWD/qscriptdebuggerstandardwidgetfactory.cpp
+
+HEADERS += \
+    $$PWD/qscriptdebuggerconsolewidgetinterface_p_p.h \
+    $$PWD/qscriptdebuggerconsolewidgetinterface_p.h \
+    $$PWD/qscriptdebuggerconsolewidget_p.h \
+    $$PWD/qscriptdebuggerstackwidgetinterface_p_p.h \
+    $$PWD/qscriptdebuggerstackwidgetinterface_p.h \
+    $$PWD/qscriptdebuggerstackwidget_p.h \
+    $$PWD/qscriptdebuggerstackmodel_p.h \
+    $$PWD/qscriptdebuggerscriptswidgetinterface_p_p.h \
+    $$PWD/qscriptdebuggerscriptswidgetinterface_p.h \
+    $$PWD/qscriptdebuggerscriptswidget_p.h \
+    $$PWD/qscriptdebuggerscriptsmodel_p.h \
+    $$PWD/qscriptdebuggerlocalswidgetinterface_p_p.h \
+    $$PWD/qscriptdebuggerlocalswidgetinterface_p.h \
+    $$PWD/qscriptdebuggerlocalswidget_p.h \
+    $$PWD/qscriptdebuggerlocalsmodel_p.h \
+    $$PWD/qscriptdebuggercodewidgetinterface_p_p.h \
+    $$PWD/qscriptdebuggercodewidgetinterface_p.h \
+    $$PWD/qscriptdebuggercodewidget_p.h \
+    $$PWD/qscriptdebuggercodeviewinterface_p_p.h \
+    $$PWD/qscriptdebuggercodeviewinterface_p.h \
+    $$PWD/qscriptdebuggercodeview_p.h \
+    $$PWD/qscriptdebuggercodefinderwidgetinterface_p_p.h \
+    $$PWD/qscriptdebuggercodefinderwidgetinterface_p.h \
+    $$PWD/qscriptdebuggercodefinderwidget_p.h \
+    $$PWD/qscriptdebugoutputwidgetinterface_p_p.h \
+    $$PWD/qscriptdebugoutputwidgetinterface_p.h \
+    $$PWD/qscriptdebugoutputwidget_p.h \
+    $$PWD/qscriptbreakpointswidgetinterface_p_p.h \
+    $$PWD/qscriptbreakpointswidgetinterface_p.h \
+    $$PWD/qscriptbreakpointswidget_p.h \
+    $$PWD/qscriptbreakpointsmodel_p.h \
+    $$PWD/qscripterrorlogwidgetinterface_p_p.h \
+    $$PWD/qscripterrorlogwidgetinterface_p.h \
+    $$PWD/qscripterrorlogwidget_p.h \
+    $$PWD/qscriptdebuggerwidgetfactoryinterface_p.h \
+    $$PWD/qscriptdebuggerstandardwidgetfactory_p.h
+
+SOURCES += \
+    $$PWD/qscriptenginedebugger.cpp
+
+HEADERS += \
+    $$PWD/qscriptenginedebugger.h
diff --git a/src/scripttools/debugging/images/breakpoint.png b/src/scripttools/debugging/images/breakpoint.png
new file mode 100644
index 0000000..21c4376
--- /dev/null
+++ b/src/scripttools/debugging/images/breakpoint.png
diff --git a/src/scripttools/debugging/images/breakpoint.svg b/src/scripttools/debugging/images/breakpoint.svg
new file mode 100644
index 0000000..e8d63cc
--- /dev/null
+++ b/src/scripttools/debugging/images/breakpoint.svg
@@ -0,0 +1,154 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://web.resource.org/cc/"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
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+   id="svg2270"
+   sodipodi:version="0.32"
+   inkscape:version="0.45.1"
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diff --git a/src/scripttools/debugging/images/d_breakpoint.png b/src/scripttools/debugging/images/d_breakpoint.png
new file mode 100644
index 0000000..867b30d
--- /dev/null
+++ b/src/scripttools/debugging/images/d_breakpoint.png
diff --git a/src/scripttools/debugging/images/d_breakpoint.svg b/src/scripttools/debugging/images/d_breakpoint.svg
new file mode 100644
index 0000000..f303b34
--- /dev/null
+++ b/src/scripttools/debugging/images/d_breakpoint.svg
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+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:xlink="http://www.w3.org/1999/xlink"
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diff --git a/src/scripttools/debugging/images/d_interrupt.png b/src/scripttools/debugging/images/d_interrupt.png
new file mode 100644
index 0000000..e5b3af0
--- /dev/null
+++ b/src/scripttools/debugging/images/d_interrupt.png
diff --git a/src/scripttools/debugging/images/d_play.png b/src/scripttools/debugging/images/d_play.png
new file mode 100644
index 0000000..7ef9667
--- /dev/null
+++ b/src/scripttools/debugging/images/d_play.png
diff --git a/src/scripttools/debugging/images/delete.png b/src/scripttools/debugging/images/delete.png
new file mode 100644
index 0000000..9f0491d
--- /dev/null
+++ b/src/scripttools/debugging/images/delete.png
diff --git a/src/scripttools/debugging/images/find.png b/src/scripttools/debugging/images/find.png
new file mode 100644
index 0000000..3f369fd
--- /dev/null
+++ b/src/scripttools/debugging/images/find.png
diff --git a/src/scripttools/debugging/images/interrupt.png b/src/scripttools/debugging/images/interrupt.png
new file mode 100644
index 0000000..c5f396e
--- /dev/null
+++ b/src/scripttools/debugging/images/interrupt.png
diff --git a/src/scripttools/debugging/images/location.png b/src/scripttools/debugging/images/location.png
new file mode 100644
index 0000000..6c4a4bf
--- /dev/null
+++ b/src/scripttools/debugging/images/location.png
diff --git a/src/scripttools/debugging/images/location.svg b/src/scripttools/debugging/images/location.svg
new file mode 100644
index 0000000..afb7005
--- /dev/null
+++ b/src/scripttools/debugging/images/location.svg
@@ -0,0 +1,121 @@
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diff --git a/src/scripttools/debugging/images/mac/closetab.png b/src/scripttools/debugging/images/mac/closetab.png
new file mode 100644
index 0000000..ab9d669
--- /dev/null
+++ b/src/scripttools/debugging/images/mac/closetab.png
diff --git a/src/scripttools/debugging/images/mac/next.png b/src/scripttools/debugging/images/mac/next.png
new file mode 100644
index 0000000..a585cab
--- /dev/null
+++ b/src/scripttools/debugging/images/mac/next.png
diff --git a/src/scripttools/debugging/images/mac/plus.png b/src/scripttools/debugging/images/mac/plus.png
new file mode 100644
index 0000000..1ee4542
--- /dev/null
+++ b/src/scripttools/debugging/images/mac/plus.png
diff --git a/src/scripttools/debugging/images/mac/previous.png b/src/scripttools/debugging/images/mac/previous.png
new file mode 100644
index 0000000..612fb34
--- /dev/null
+++ b/src/scripttools/debugging/images/mac/previous.png
diff --git a/src/scripttools/debugging/images/new.png b/src/scripttools/debugging/images/new.png
new file mode 100644
index 0000000..9520080
--- /dev/null
+++ b/src/scripttools/debugging/images/new.png
diff --git a/src/scripttools/debugging/images/play.png b/src/scripttools/debugging/images/play.png
new file mode 100644
index 0000000..5880175
--- /dev/null
+++ b/src/scripttools/debugging/images/play.png
diff --git a/src/scripttools/debugging/images/reload.png b/src/scripttools/debugging/images/reload.png
new file mode 100644
index 0000000..18c752e
--- /dev/null
+++ b/src/scripttools/debugging/images/reload.png
diff --git a/src/scripttools/debugging/images/return.png b/src/scripttools/debugging/images/return.png
new file mode 100644
index 0000000..9db255a
--- /dev/null
+++ b/src/scripttools/debugging/images/return.png
diff --git a/src/scripttools/debugging/images/runtocursor.png b/src/scripttools/debugging/images/runtocursor.png
new file mode 100644
index 0000000..0d92dd5
--- /dev/null
+++ b/src/scripttools/debugging/images/runtocursor.png
diff --git a/src/scripttools/debugging/images/runtonewscript.png b/src/scripttools/debugging/images/runtonewscript.png
new file mode 100644
index 0000000..fb5fe5a
--- /dev/null
+++ b/src/scripttools/debugging/images/runtonewscript.png
diff --git a/src/scripttools/debugging/images/stepinto.png b/src/scripttools/debugging/images/stepinto.png
new file mode 100644
index 0000000..de4baa1
--- /dev/null
+++ b/src/scripttools/debugging/images/stepinto.png
diff --git a/src/scripttools/debugging/images/stepout.png b/src/scripttools/debugging/images/stepout.png
new file mode 100644
index 0000000..f49dcbf
--- /dev/null
+++ b/src/scripttools/debugging/images/stepout.png
diff --git a/src/scripttools/debugging/images/stepover.png b/src/scripttools/debugging/images/stepover.png
new file mode 100644
index 0000000..0a2d6ec
--- /dev/null
+++ b/src/scripttools/debugging/images/stepover.png
diff --git a/src/scripttools/debugging/images/win/closetab.png b/src/scripttools/debugging/images/win/closetab.png
new file mode 100644
index 0000000..ef9e020
--- /dev/null
+++ b/src/scripttools/debugging/images/win/closetab.png
diff --git a/src/scripttools/debugging/images/win/next.png b/src/scripttools/debugging/images/win/next.png
new file mode 100644
index 0000000..8df4127
--- /dev/null
+++ b/src/scripttools/debugging/images/win/next.png
diff --git a/src/scripttools/debugging/images/win/plus.png b/src/scripttools/debugging/images/win/plus.png
new file mode 100644
index 0000000..ecf0589
--- /dev/null
+++ b/src/scripttools/debugging/images/win/plus.png
diff --git a/src/scripttools/debugging/images/win/previous.png b/src/scripttools/debugging/images/win/previous.png
new file mode 100644
index 0000000..0780bc2
--- /dev/null
+++ b/src/scripttools/debugging/images/win/previous.png
diff --git a/src/scripttools/debugging/images/wrap.png b/src/scripttools/debugging/images/wrap.png
new file mode 100644
index 0000000..90f18d9
--- /dev/null
+++ b/src/scripttools/debugging/images/wrap.png
diff --git a/src/scripttools/debugging/qscriptbreakpointdata.cpp b/src/scripttools/debugging/qscriptbreakpointdata.cpp
new file mode 100644
index 0000000..0038ba3
--- /dev/null
+++ b/src/scripttools/debugging/qscriptbreakpointdata.cpp
@@ -0,0 +1,392 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptbreakpointdata_p.h"
+
+#include <QtCore/qdatastream.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qvariant.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \since 4.5
+  \class QScriptBreakpointData
+  \internal
+
+  \brief The QScriptBreakpointData class contains data associated with a breakpoint.
+*/
+
+class QScriptBreakpointDataPrivate
+{
+public:
+    QScriptBreakpointDataPrivate();
+    ~QScriptBreakpointDataPrivate();
+
+    void init(int ln);
+
+    qint64 scriptId;
+    QString fileName;
+    int lineNumber;
+    bool enabled;
+    bool singleShot;
+    int ignoreCount;
+    QString condition;
+    QVariant data;
+    int hitCount;
+};
+
+QScriptBreakpointDataPrivate::QScriptBreakpointDataPrivate()
+{
+}
+
+QScriptBreakpointDataPrivate::~QScriptBreakpointDataPrivate()
+{
+}
+
+void QScriptBreakpointDataPrivate::init(int ln)
+{
+    scriptId = -1;
+    lineNumber = ln;
+    enabled = true;
+    singleShot = false;
+    ignoreCount = 0;
+    hitCount = 0;
+}
+
+/*!
+  Constructs an empty QScriptBreakpointData.
+*/
+QScriptBreakpointData::QScriptBreakpointData()
+    : d_ptr(new QScriptBreakpointDataPrivate)
+{
+    d_ptr->init(/*lineNumber=*/-1);
+}
+
+/*!
+  Constructs a QScriptBreakpointData with the given \a lineNumber.
+*/
+QScriptBreakpointData::QScriptBreakpointData(qint64 scriptId, int lineNumber)
+    : d_ptr(new QScriptBreakpointDataPrivate)
+{
+    d_ptr->init(lineNumber);
+    d_ptr->scriptId = scriptId;
+}
+
+/*!
+  Constructs a QScriptBreakpointData with the given \a lineNumber.
+*/
+QScriptBreakpointData::QScriptBreakpointData(const QString &fileName, int lineNumber)
+    : d_ptr(new QScriptBreakpointDataPrivate)
+{
+    d_ptr->init(lineNumber);
+    d_ptr->fileName = fileName;
+}
+
+/*!
+  Constructs a QScriptBreakpointData that is a copy of \a other.
+*/
+QScriptBreakpointData::QScriptBreakpointData(const QScriptBreakpointData &other)
+    : d_ptr(new QScriptBreakpointDataPrivate)
+{
+    Q_ASSERT(other.d_ptr != 0);
+    *d_ptr = *other.d_ptr;
+}
+
+/*!
+  Destroys this QScriptBreakpointData.
+*/
+QScriptBreakpointData::~QScriptBreakpointData()
+{
+}
+
+/*!
+  Assigns \a other to this QScriptBreakpointData.
+*/
+QScriptBreakpointData &QScriptBreakpointData::operator=(const QScriptBreakpointData &other)
+{
+    Q_ASSERT(d_ptr != 0);
+    Q_ASSERT(other.d_ptr != 0);
+    *d_ptr = *other.d_ptr;
+    return *this;
+}
+
+qint64 QScriptBreakpointData::scriptId() const
+{
+    Q_D(const QScriptBreakpointData);
+    return d->scriptId;
+}
+
+void QScriptBreakpointData::setScriptId(qint64 id)
+{
+    Q_D(QScriptBreakpointData);
+    d->scriptId = id;
+}
+
+QString QScriptBreakpointData::fileName() const
+{
+    Q_D(const QScriptBreakpointData);
+    return d->fileName;
+}
+
+void QScriptBreakpointData::setFileName(const QString &fileName)
+{
+    Q_D(QScriptBreakpointData);
+    d->fileName = fileName;
+}
+
+/*!
+  Returns the breakpoint line number.
+*/
+int QScriptBreakpointData::lineNumber() const
+{
+    Q_D(const QScriptBreakpointData);
+    return d->lineNumber;
+}
+
+/*!
+  Sets the breakpoint line number to \a lineNumber.
+*/
+void QScriptBreakpointData::setLineNumber(int lineNumber)
+{
+    Q_D(QScriptBreakpointData);
+    d->lineNumber = lineNumber;
+}
+
+/*!
+  Returns true if the breakpoint is enabled, false otherwise.
+*/
+bool QScriptBreakpointData::isEnabled() const
+{
+    Q_D(const QScriptBreakpointData);
+    return d->enabled;
+}
+
+/*!
+  Sets the \a enabled state of the breakpoint.
+*/
+void QScriptBreakpointData::setEnabled(bool enabled)
+{
+    Q_D(QScriptBreakpointData);
+    d->enabled = enabled;
+}
+
+/*!
+  Returns true if the breakpoint is single-shot, false otherwise.
+*/
+bool QScriptBreakpointData::isSingleShot() const
+{
+    Q_D(const QScriptBreakpointData);
+    return d->singleShot;
+}
+
+/*!
+  Sets the \a singleShot state of the breakpoint.
+*/
+void QScriptBreakpointData::setSingleShot(bool singleShot)
+{
+    Q_D(QScriptBreakpointData);
+    d->singleShot = singleShot;
+}
+
+/*!
+  Returns the ignore count of the breakpoint.
+*/
+int QScriptBreakpointData::ignoreCount() const
+{
+    Q_D(const QScriptBreakpointData);
+    return d->ignoreCount;
+}
+
+/*!
+  Sets the ignore \a count of the breakpoint.
+*/
+void QScriptBreakpointData::setIgnoreCount(int count)
+{
+    Q_D(QScriptBreakpointData);
+    d->ignoreCount = count;
+}
+
+/*!
+  If the ignore count is 0, this function increments the hit count and
+  returns true. Otherwise, it decrements the ignore count and returns
+  false.
+*/
+bool QScriptBreakpointData::hit()
+{
+    Q_D(QScriptBreakpointData);
+    if (d->ignoreCount == 0) {
+        ++d->hitCount;
+        return true;
+    }
+    --d->ignoreCount;
+    return false;
+}
+
+/*!
+  Returns the hit count of the breakpoint (the number of times the
+  breakpoint has been triggered).
+*/
+int QScriptBreakpointData::hitCount() const
+{
+    Q_D(const QScriptBreakpointData);
+    return d->hitCount;
+}
+
+/*!
+  Returns the condition of the breakpoint.
+*/
+QString QScriptBreakpointData::condition() const
+{
+    Q_D(const QScriptBreakpointData);
+    return d->condition;
+}
+
+/*!
+  Sets the \a condition of the breakpoint.
+*/
+void QScriptBreakpointData::setCondition(const QString &condition)
+{
+    Q_D(QScriptBreakpointData);
+    d->condition = condition;
+}
+
+/*!
+  Returns custom data associated with the breakpoint.
+*/
+QVariant QScriptBreakpointData::data() const
+{
+    Q_D(const QScriptBreakpointData);
+    return d->data;
+}
+
+/*!
+  Sets custom \a data associated with the breakpoint.
+*/
+void QScriptBreakpointData::setData(const QVariant &data)
+{
+    Q_D(QScriptBreakpointData);
+    d->data = data;
+}
+
+bool QScriptBreakpointData::isValid() const
+{
+    Q_D(const QScriptBreakpointData);
+    return (((d->scriptId != -1) || !d->fileName.isEmpty())
+            && (d->lineNumber != -1));
+}
+
+/*!
+  Returns true if this QScriptBreakpointData is equal to the \a other
+  data, otherwise returns false.
+*/
+bool QScriptBreakpointData::operator==(const QScriptBreakpointData &other) const
+{
+    Q_D(const QScriptBreakpointData);
+    const QScriptBreakpointDataPrivate *od = other.d_func();
+    if (d == od)
+        return true;
+    if (!d || !od)
+        return false;
+    return ((d->scriptId == od->scriptId)
+            && (d->fileName == od->fileName)
+            && (d->lineNumber == od->lineNumber)
+            && (d->enabled == od->enabled)
+            && (d->singleShot == od->singleShot)
+            && (d->condition == od->condition)
+            && (d->ignoreCount == od->ignoreCount)
+            && (d->data == od->data)
+            && (d->hitCount == od->hitCount));
+}
+
+/*!
+  Returns true if this QScriptBreakpointData is not equal to the \a
+  other data, otherwise returns false.
+*/
+bool QScriptBreakpointData::operator!=(const QScriptBreakpointData &other) const
+{
+    return !(*this == other);
+}
+
+/*!
+  \fn QDataStream &operator<<(QDataStream &stream, const QScriptBreakpointData &data)
+  \relates QScriptBreakpointData
+
+  Writes the given \a data to the specified \a stream.
+*/
+QDataStream &operator<<(QDataStream &out, const QScriptBreakpointData &data)
+{
+    const QScriptBreakpointDataPrivate *d = data.d_ptr.data();
+    out << d->scriptId;
+    out << d->fileName;
+    out << d->lineNumber;
+    out << d->enabled;
+    out << d->singleShot;
+    out << d->ignoreCount;
+    out << d->condition;
+    out << d->data;
+    out << d->hitCount;
+    return out;
+}
+
+/*!
+  \fn QDataStream &operator>>(QDataStream &stream, QScriptBreakpointData &data)
+  \relates QScriptBreakpointData
+
+  Reads a QScriptBreakpointData from the specified \a stream into the
+  given \a data.
+*/
+QDataStream &operator>>(QDataStream &in, QScriptBreakpointData &data)
+{
+    QScriptBreakpointDataPrivate *d = data.d_ptr.data();
+    in >> d->scriptId;
+    in >> d->fileName;
+    in >> d->lineNumber;
+    in >> d->enabled;
+    in >> d->singleShot;
+    in >> d->ignoreCount;
+    in >> d->condition;
+    in >> d->data;
+    in >> d->hitCount;
+    return in;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptbreakpointdata_p.h b/src/scripttools/debugging/qscriptbreakpointdata_p.h
new file mode 100644
index 0000000..8d48327
--- /dev/null
+++ b/src/scripttools/debugging/qscriptbreakpointdata_p.h
@@ -0,0 +1,129 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTBREAKPOINTDATA_P_H
+#define QSCRIPTBREAKPOINTDATA_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+#include <QtCore/qscopedpointer.h>
+#include <QtCore/qmap.h>
+
+QT_BEGIN_NAMESPACE
+
+class QDataStream;
+class QVariant;
+
+class QScriptBreakpointDataPrivate;
+class Q_AUTOTEST_EXPORT QScriptBreakpointData
+{
+public:
+    friend Q_AUTOTEST_EXPORT QDataStream &operator<<(QDataStream &, const QScriptBreakpointData &);
+    friend Q_AUTOTEST_EXPORT QDataStream &operator>>(QDataStream &, QScriptBreakpointData &);
+
+    QScriptBreakpointData();
+    QScriptBreakpointData(qint64 scriptId, int lineNumber);
+    QScriptBreakpointData(const QString &fileName, int lineNumber);
+    QScriptBreakpointData(const QScriptBreakpointData &other);
+    ~QScriptBreakpointData();
+    QScriptBreakpointData &operator=(const QScriptBreakpointData &other);
+
+    bool isValid() const;
+
+    // location
+    qint64 scriptId() const;
+    void setScriptId(qint64 id);
+
+    QString fileName() const;
+    void setFileName(const QString &fileName);
+
+    int lineNumber() const;
+    void setLineNumber(int lineNumber);
+
+    // data
+    bool isEnabled() const;
+    void setEnabled(bool enabled);
+
+    bool isSingleShot() const;
+    void setSingleShot(bool singleShot);
+
+    int ignoreCount() const;
+    void setIgnoreCount(int count);
+
+    QString condition() const;
+    void setCondition(const QString &condition);
+
+    QVariant data() const;
+    void setData(const QVariant &data);
+
+    bool hit();
+
+    // statistics
+    int hitCount() const;
+
+
+    bool operator==(const QScriptBreakpointData &other) const;
+    bool operator!=(const QScriptBreakpointData &other) const;
+
+private:
+    QScopedPointer<QScriptBreakpointDataPrivate> d_ptr;
+
+    Q_DECLARE_PRIVATE(QScriptBreakpointData)
+};
+
+typedef QMap<int, QScriptBreakpointData> QScriptBreakpointMap;
+
+Q_AUTOTEST_EXPORT QDataStream &operator<<(QDataStream &, const QScriptBreakpointData &);
+Q_AUTOTEST_EXPORT QDataStream &operator>>(QDataStream &, QScriptBreakpointData &);
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptbreakpointsmodel.cpp b/src/scripttools/debugging/qscriptbreakpointsmodel.cpp
new file mode 100644
index 0000000..9cda36f
--- /dev/null
+++ b/src/scripttools/debugging/qscriptbreakpointsmodel.cpp
@@ -0,0 +1,498 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptbreakpointsmodel_p.h"
+#include "qscriptdebuggerjobschedulerinterface_p.h"
+#include "qscriptdebuggercommandschedulerjob_p.h"
+#include "qscriptdebuggercommandschedulerfrontend_p.h"
+
+#include "private/qabstractitemmodel_p.h"
+
+#include <QtCore/qpair.h>
+#include <QtCore/qcoreapplication.h>
+#include <QtGui/qicon.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \since 4.5
+  \class QScriptBreakpointsModel
+  \internal
+*/
+
+class QScriptBreakpointsModelPrivate
+    : public QAbstractItemModelPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptBreakpointsModel)
+public:
+    QScriptBreakpointsModelPrivate();
+    ~QScriptBreakpointsModelPrivate();
+
+    QScriptDebuggerJobSchedulerInterface *jobScheduler;
+    QScriptDebuggerCommandSchedulerInterface *commandScheduler;
+    QList<QPair<int, QScriptBreakpointData> > breakpoints;
+};
+
+QScriptBreakpointsModelPrivate::QScriptBreakpointsModelPrivate()
+{
+}
+
+QScriptBreakpointsModelPrivate::~QScriptBreakpointsModelPrivate()
+{
+}
+
+QScriptBreakpointsModel::QScriptBreakpointsModel(
+    QScriptDebuggerJobSchedulerInterface *jobScheduler,
+    QScriptDebuggerCommandSchedulerInterface *commandScheduler,
+    QObject *parent)
+    : QAbstractItemModel(*new QScriptBreakpointsModelPrivate, parent)
+{
+    Q_D(QScriptBreakpointsModel);
+    d->jobScheduler = jobScheduler;
+    d->commandScheduler = commandScheduler;
+}
+
+QScriptBreakpointsModel::~QScriptBreakpointsModel()
+{
+}
+
+namespace
+{
+
+class SetBreakpointJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    SetBreakpointJob(const QScriptBreakpointData &data,
+                     QScriptDebuggerCommandSchedulerInterface *scheduler)
+        : QScriptDebuggerCommandSchedulerJob(scheduler),
+          m_data(data)
+    { }
+
+    void start()
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleSetBreakpoint(m_data);
+    }
+
+    void handleResponse(const QScriptDebuggerResponse &, int)
+    {
+        finish();
+    }
+
+private:
+    QScriptBreakpointData m_data;
+};
+
+} // namespace
+
+/*!
+  Sets a breakpoint defined by the given \a data.
+  A new row will be inserted into the model if the breakpoint could be
+  successfully set.
+*/
+void QScriptBreakpointsModel::setBreakpoint(const QScriptBreakpointData &data)
+{
+    Q_D(QScriptBreakpointsModel);
+    QScriptDebuggerJob *job = new SetBreakpointJob(data, d->commandScheduler);
+    d->jobScheduler->scheduleJob(job);
+}
+
+namespace
+{
+
+class SetBreakpointDataJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    SetBreakpointDataJob(int id, const QScriptBreakpointData &data,
+                         QScriptDebuggerCommandSchedulerInterface *scheduler)
+        : QScriptDebuggerCommandSchedulerJob(scheduler),
+          m_id(id), m_data(data)
+    { }
+
+    void start()
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleSetBreakpointData(m_id, m_data);
+    }
+
+    void handleResponse(const QScriptDebuggerResponse &, int)
+    {
+        finish();
+    }
+
+private:
+    int m_id;
+    QScriptBreakpointData m_data;
+};
+
+} // namespace
+
+/*!
+  Sets the \a data associated with the breakpoint identified by \a id.
+  A dataChanged() signal will be emitted if the breakpoint data could
+  be successfully changed.
+*/
+void QScriptBreakpointsModel::setBreakpointData(int id, const QScriptBreakpointData &data)
+{
+    Q_D(QScriptBreakpointsModel);
+    QScriptDebuggerJob *job = new SetBreakpointDataJob(id, data, d->commandScheduler);
+    d->jobScheduler->scheduleJob(job);
+}
+
+namespace
+{
+
+class DeleteBreakpointJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    DeleteBreakpointJob(int id, QScriptDebuggerCommandSchedulerInterface *scheduler)
+        : QScriptDebuggerCommandSchedulerJob(scheduler),
+          m_id(id)
+    { }
+
+    void start()
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleDeleteBreakpoint(m_id);
+    }
+
+    void handleResponse(const QScriptDebuggerResponse &, int)
+    {
+        finish();
+    }
+
+private:
+    int m_id;
+};
+
+} // namespace
+
+/*!
+  Deletes the breakpoint with the given \a id.
+  The corresponding row in the model will be removed if the breakpoint
+  was successfully deleted.
+*/
+void QScriptBreakpointsModel::deleteBreakpoint(int id)
+{
+    Q_D(QScriptBreakpointsModel);
+    QScriptDebuggerJob *job = new DeleteBreakpointJob(id, d->commandScheduler);
+    d->jobScheduler->scheduleJob(job);
+}
+
+/*!
+  Adds a breakpoint to the model. This function does not actually set
+  a breakpoint (i.e. it doesn't communicate with the debugger).
+*/
+void QScriptBreakpointsModel::addBreakpoint(int id, const QScriptBreakpointData &data)
+{
+    Q_D(QScriptBreakpointsModel);
+    int rowIndex = d->breakpoints.size();
+    beginInsertRows(QModelIndex(), rowIndex, rowIndex);
+    d->breakpoints.append(qMakePair(id, data));
+    endInsertRows();
+}
+
+/*!
+  Modify the \a data of breakpoint \a id.
+*/
+void QScriptBreakpointsModel::modifyBreakpoint(int id, const QScriptBreakpointData &data)
+{
+    Q_D(QScriptBreakpointsModel);
+    for (int i = 0; i < d->breakpoints.size(); ++i) {
+        if (d->breakpoints.at(i).first == id) {
+            d->breakpoints[i] = qMakePair(id, data);
+            emit dataChanged(createIndex(i, 0), createIndex(i, columnCount()-1));
+            break;
+        }
+    }
+}
+
+/*!
+  Remove the breakpoint identified by \a id from the model. This
+  function does not delete the breakpoint (i.e. it doesn't communicate
+  with the debugger).
+*/
+void QScriptBreakpointsModel::removeBreakpoint(int id)
+{
+    Q_D(QScriptBreakpointsModel);
+    for (int i = 0; i < d->breakpoints.size(); ++i) {
+        if (d->breakpoints.at(i).first == id) {
+            beginRemoveRows(QModelIndex(), i, i);
+            d->breakpoints.removeAt(i);
+            endRemoveRows();
+            break;
+        }
+    }
+}
+
+/*!
+  Returns the id of the breakpoint at the given \a row.
+*/
+int QScriptBreakpointsModel::breakpointIdAt(int row) const
+{
+    Q_D(const QScriptBreakpointsModel);
+    return d->breakpoints.at(row).first;
+}
+
+/*!
+  Returns the data for the breakpoint at the given \a row.
+*/
+QScriptBreakpointData QScriptBreakpointsModel::breakpointDataAt(int row) const
+{
+    Q_D(const QScriptBreakpointsModel);
+    return d->breakpoints.at(row).second;
+}
+
+QScriptBreakpointData QScriptBreakpointsModel::breakpointData(int id) const
+{
+    Q_D(const QScriptBreakpointsModel);
+    for (int i = 0; i < d->breakpoints.size(); ++i) {
+        if (d->breakpoints.at(i).first == id)
+            return d->breakpoints.at(i).second;
+    }
+    return QScriptBreakpointData();
+}
+
+/*!
+  Tries to find a breakpoint with the given \a scriptId and \a
+  lineNumber. Returns the id of the first breakpoint that matches, or
+  -1 if no such breakpoint is found.
+*/
+int QScriptBreakpointsModel::resolveBreakpoint(qint64 scriptId, int lineNumber) const
+{
+    Q_D(const QScriptBreakpointsModel);
+    for (int i = 0; i < d->breakpoints.size(); ++i) {
+        if ((d->breakpoints.at(i).second.scriptId() == scriptId)
+            && (d->breakpoints.at(i).second.lineNumber() == lineNumber)) {
+            return d->breakpoints.at(i).first;
+        }
+    }
+    return -1;
+}
+
+int QScriptBreakpointsModel::resolveBreakpoint(const QString &fileName, int lineNumber) const
+{
+    Q_D(const QScriptBreakpointsModel);
+    for (int i = 0; i < d->breakpoints.size(); ++i) {
+        if ((d->breakpoints.at(i).second.fileName() == fileName)
+            && (d->breakpoints.at(i).second.lineNumber() == lineNumber)) {
+            return d->breakpoints.at(i).first;
+        }
+    }
+    return -1;
+}
+
+/*!
+  \reimp
+*/
+QModelIndex QScriptBreakpointsModel::index(int row, int column, const QModelIndex &parent) const
+{
+    Q_D(const QScriptBreakpointsModel);
+    if (parent.isValid())
+        return QModelIndex();
+    if ((row < 0) || (row >= d->breakpoints.size()))
+        return QModelIndex();
+    if ((column < 0) || (column >= columnCount()))
+        return QModelIndex();
+    return createIndex(row, column);
+}
+
+/*!
+  \reimp
+*/
+QModelIndex QScriptBreakpointsModel::parent(const QModelIndex &) const
+{
+    return QModelIndex();
+}
+
+/*!
+  \reimp
+*/
+int QScriptBreakpointsModel::columnCount(const QModelIndex &parent) const
+{
+    if (!parent.isValid())
+        return 6;
+    return 0;
+}
+
+/*!
+  \reimp
+*/
+int QScriptBreakpointsModel::rowCount(const QModelIndex &parent) const
+{
+    Q_D(const QScriptBreakpointsModel);
+    if (!parent.isValid())
+        return d->breakpoints.size();
+    return 0;
+}
+
+/*!
+  \reimp
+*/
+QVariant QScriptBreakpointsModel::data(const QModelIndex &index, int role) const
+{
+    Q_D(const QScriptBreakpointsModel);
+    if (!index.isValid() || (index.row() >= d->breakpoints.size()))
+        return QVariant();
+    const QPair<int, QScriptBreakpointData> &item = d->breakpoints.at(index.row());
+    if (role == Qt::DisplayRole) {
+        if (index.column() == 0)
+            return item.first;
+        else if (index.column() == 1) {
+            QString loc = item.second.fileName();
+            if (loc.isEmpty())
+                loc = QString::fromLatin1("<anonymous script, id=%0>").arg(item.second.scriptId());
+            loc.append(QString::fromLatin1(":%0").arg(item.second.lineNumber()));
+            return loc;
+        } else if (index.column() == 2) {
+            if (!item.second.condition().isEmpty())
+                return item.second.condition();
+        } else if (index.column() == 3) {
+            if (item.second.ignoreCount() != 0)
+                return item.second.ignoreCount();
+        } else if (index.column() == 5) {
+            return item.second.hitCount();
+        }
+    } else if (role == Qt::CheckStateRole) {
+        if (index.column() == 0) {
+            return item.second.isEnabled() ? Qt::Checked : Qt::Unchecked;
+        } else if (index.column() == 4) {
+            return item.second.isSingleShot() ? Qt::Checked : Qt::Unchecked;
+        }
+    } else if (role == Qt::EditRole) {
+        if (index.column() == 2)
+            return item.second.condition();
+        else if (index.column() == 3)
+            return item.second.ignoreCount();
+    }
+    return QVariant();
+}
+
+/*!
+  \reimp
+*/
+bool QScriptBreakpointsModel::setData(const QModelIndex &index, const QVariant &value, int role)
+{
+    Q_D(QScriptBreakpointsModel);
+    if (!index.isValid() || (index.row() >= d->breakpoints.size()))
+        return false;
+    const QPair<int, QScriptBreakpointData> &item = d->breakpoints.at(index.row());
+    QScriptBreakpointData modifiedData;
+    int col = index.column();
+    if ((col == 0) || (col == 4)) {
+        if (role == Qt::CheckStateRole) {
+            modifiedData = item.second;
+            if (col == 0)
+                modifiedData.setEnabled(value.toInt() == Qt::Checked);
+            else
+                modifiedData.setSingleShot(value.toInt() == Qt::Checked);
+        }
+    } else if (col == 2) {
+        if (role == Qt::EditRole) {
+            modifiedData = item.second;
+            modifiedData.setCondition(value.toString());
+        }
+    } else if (col == 3) {
+        if (role == Qt::EditRole) {
+            modifiedData = item.second;
+            modifiedData.setIgnoreCount(value.toInt());
+        }
+    }
+    if (!modifiedData.isValid())
+        return false;
+    QScriptDebuggerJob *job = new SetBreakpointDataJob(item.first, modifiedData, d->commandScheduler);
+    d->jobScheduler->scheduleJob(job);
+    return true;
+}
+
+/*!
+  \reimp
+*/
+QVariant QScriptBreakpointsModel::headerData(int section, Qt::Orientation orient, int role) const
+{
+    if (orient == Qt::Horizontal) {
+        if (role == Qt::DisplayRole) {
+            if (section == 0)
+                return QCoreApplication::translate("QScriptBreakpointsModel", "ID");
+            else if (section == 1)
+                return QCoreApplication::translate("QScriptBreakpointsModel", "Location");
+            else if (section == 2)
+                return QCoreApplication::translate("QScriptBreakpointsModel", "Condition");
+            else if (section == 3)
+                return QCoreApplication::translate("QScriptBreakpointsModel", "Ignore-count");
+            else if (section == 4)
+                return QCoreApplication::translate("QScriptBreakpointsModel", "Single-shot");
+            else if (section == 5)
+                return QCoreApplication::translate("QScriptBreakpointsModel", "Hit-count");
+        }
+    }
+    return QVariant();
+}
+
+/*!
+  \reimp
+*/
+Qt::ItemFlags QScriptBreakpointsModel::flags(const QModelIndex &index) const
+{
+    if (!index.isValid())
+        return 0;
+    Qt::ItemFlags ret = Qt::ItemIsEnabled | Qt::ItemIsSelectable;
+    switch (index.column()) {
+    case 0:
+        ret |= Qt::ItemIsUserCheckable;
+        break;
+    case 1:
+        break;
+    case 2:
+        ret |= Qt::ItemIsEditable;
+        break;
+    case 3:
+        ret |= Qt::ItemIsEditable;
+        break;
+    case 4:
+        ret |= Qt::ItemIsUserCheckable;
+        break;
+    }
+    return ret;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptbreakpointsmodel_p.h b/src/scripttools/debugging/qscriptbreakpointsmodel_p.h
new file mode 100644
index 0000000..4a59a6a
--- /dev/null
+++ b/src/scripttools/debugging/qscriptbreakpointsmodel_p.h
@@ -0,0 +1,107 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTBREAKPOINTSMODEL_P_H
+#define QSCRIPTBREAKPOINTSMODEL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qabstractitemmodel.h>
+
+#include "qscriptbreakpointdata_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerJobSchedulerInterface;
+class QScriptDebuggerCommandSchedulerInterface;
+
+class QScriptBreakpointsModelPrivate;
+class Q_AUTOTEST_EXPORT QScriptBreakpointsModel
+    : public QAbstractItemModel
+{
+    Q_OBJECT
+public:
+    QScriptBreakpointsModel(QScriptDebuggerJobSchedulerInterface *jobScheduler,
+                            QScriptDebuggerCommandSchedulerInterface *commandScheduler,
+                            QObject *parent = 0);
+    ~QScriptBreakpointsModel();
+
+    void setBreakpoint(const QScriptBreakpointData &data);
+    void setBreakpointData(int id, const QScriptBreakpointData &data);
+    void deleteBreakpoint(int id);
+
+    void addBreakpoint(int id, const QScriptBreakpointData &data);
+    void modifyBreakpoint(int id, const QScriptBreakpointData &data);
+    void removeBreakpoint(int id);
+
+    int breakpointIdAt(int row) const;
+    QScriptBreakpointData breakpointDataAt(int row) const;
+    QScriptBreakpointData breakpointData(int id) const;
+
+    int resolveBreakpoint(qint64 scriptId, int lineNumber) const;
+    int resolveBreakpoint(const QString &fileName, int lineNumber) const;
+
+    QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const;
+    QModelIndex parent(const QModelIndex &child) const;
+    int columnCount(const QModelIndex &parent = QModelIndex()) const;
+    int rowCount(const QModelIndex &parent = QModelIndex()) const;
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
+    bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
+    QVariant headerData(int section, Qt::Orientation, int role = Qt::DisplayRole) const;
+    Qt::ItemFlags flags(const QModelIndex &index) const;
+
+private:
+    Q_DECLARE_PRIVATE(QScriptBreakpointsModel)
+    Q_DISABLE_COPY(QScriptBreakpointsModel)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptbreakpointswidget.cpp b/src/scripttools/debugging/qscriptbreakpointswidget.cpp
new file mode 100644
index 0000000..352625b
--- /dev/null
+++ b/src/scripttools/debugging/qscriptbreakpointswidget.cpp
@@ -0,0 +1,389 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptbreakpointswidget_p.h"
+#include "qscriptbreakpointswidgetinterface_p_p.h"
+#include "qscriptbreakpointsmodel_p.h"
+#include "qscriptdebuggerscriptsmodel_p.h"
+
+#include <QtCore/qdebug.h>
+#include <QtGui/qaction.h>
+#include <QtGui/qcompleter.h>
+#include <QtGui/qheaderview.h>
+#include <QtGui/qlineedit.h>
+#include <QtGui/qmessagebox.h>
+#include <QtGui/qtoolbar.h>
+#include <QtGui/qtoolbutton.h>
+#include <QtGui/qtreeview.h>
+#include <QtGui/qboxlayout.h>
+#include <QtGui/qstyleditemdelegate.h>
+#include <QtGui/qevent.h>
+#include <QtScript/qscriptengine.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptNewBreakpointWidget : public QWidget
+{
+    Q_OBJECT
+public:
+    QScriptNewBreakpointWidget(QWidget *parent = 0)
+        : QWidget(parent) {
+	QString system = QLatin1String("win");
+        QHBoxLayout *hboxLayout = new QHBoxLayout(this);
+#ifdef Q_OS_MAC
+        system = QLatin1String("mac");
+#else
+        hboxLayout->setSpacing(6);
+        hboxLayout->setMargin(0);
+#endif
+
+        toolClose = new QToolButton(this);
+        toolClose->setIcon(QIcon(QString::fromUtf8(":/qt/scripttools/debugging/images/%1/closetab.png").arg(system)));
+        toolClose->setAutoRaise(true);
+        toolClose->setText(tr("Close"));
+        hboxLayout->addWidget(toolClose);
+
+        fileNameEdit = new QLineEdit();
+        setFocusProxy(fileNameEdit);
+        QRegExp locationRegExp(QString::fromLatin1(".+:[0-9]+"));
+        QRegExpValidator *validator = new QRegExpValidator(locationRegExp, fileNameEdit);
+        fileNameEdit->setValidator(validator);
+        hboxLayout->addWidget(fileNameEdit);
+
+        toolOk = new QToolButton(this);
+        toolOk->setIcon(QIcon(QString::fromUtf8(":/qt/scripttools/debugging/images/%1/plus.png").arg(system)));
+        toolOk->setAutoRaise(true);
+        toolOk->setEnabled(false);
+        hboxLayout->addWidget(toolOk);
+
+        QObject::connect(toolClose, SIGNAL(clicked()), this, SLOT(hide()));
+        QObject::connect(toolOk, SIGNAL(clicked()), this, SLOT(onOkClicked()));
+        QObject::connect(fileNameEdit, SIGNAL(textChanged(QString)),
+                         this, SLOT(onTextChanged()));
+        QObject::connect(fileNameEdit, SIGNAL(returnPressed()),
+                         this, SLOT(onOkClicked()));
+    }
+
+    void setCompleter(QCompleter *comp)
+        { fileNameEdit->setCompleter(comp); }
+
+Q_SIGNALS:
+    void newBreakpointRequest(const QString &fileName, int lineNumber);
+
+protected:
+    void keyPressEvent(QKeyEvent *e)
+    {
+        if (e->key() == Qt::Key_Escape)
+            hide();
+        else
+            QWidget::keyPressEvent(e);
+    }
+
+private Q_SLOTS:
+    void onOkClicked()
+    {
+        QString location = fileNameEdit->text();
+        fileNameEdit->clear();
+        QString fileName = location.left(location.lastIndexOf(QLatin1Char(':')));
+        int lineNumber = location.mid(fileName.length()+1).toInt();
+        emit newBreakpointRequest(fileName, lineNumber);
+    }
+
+    void onTextChanged()
+    {
+        toolOk->setEnabled(fileNameEdit->hasAcceptableInput());
+    }
+
+private:
+    QLineEdit *fileNameEdit;
+    QToolButton *toolClose;
+    QToolButton *toolOk;
+};
+
+
+
+class QScriptBreakpointsWidgetPrivate
+    : public QScriptBreakpointsWidgetInterfacePrivate
+{
+    Q_DECLARE_PUBLIC(QScriptBreakpointsWidget)
+public:
+    QScriptBreakpointsWidgetPrivate();
+    ~QScriptBreakpointsWidgetPrivate();
+
+    void _q_newBreakpoint();
+    void _q_deleteBreakpoint();
+    void _q_onCurrentChanged(const QModelIndex &index);
+    void _q_onNewBreakpointRequest(const QString &fileName, int lineNumber);
+
+    static QPixmap pixmap(const QString &path)
+    {
+        static QString prefix = QString::fromLatin1(":/qt/scripttools/debugging/images/");
+        return QPixmap(prefix + path);
+    }
+
+    QTreeView *view;
+    QScriptNewBreakpointWidget *newBreakpointWidget;
+    QAction *deleteBreakpointAction;
+    QScriptDebuggerScriptsModel *scriptsModel;
+};
+
+QScriptBreakpointsWidgetPrivate::QScriptBreakpointsWidgetPrivate()
+{
+}
+
+QScriptBreakpointsWidgetPrivate::~QScriptBreakpointsWidgetPrivate()
+{
+}
+
+void QScriptBreakpointsWidgetPrivate::_q_newBreakpoint()
+{
+    newBreakpointWidget->show();
+    newBreakpointWidget->setFocus(Qt::OtherFocusReason);
+}
+
+void QScriptBreakpointsWidgetPrivate::_q_deleteBreakpoint()
+{
+    Q_Q(QScriptBreakpointsWidget);
+    QModelIndex index = view->currentIndex();
+    if (index.isValid()) {
+        int id = q->breakpointsModel()->breakpointIdAt(index.row());
+        q->breakpointsModel()->deleteBreakpoint(id);
+    }
+}
+
+void QScriptBreakpointsWidgetPrivate::_q_onCurrentChanged(const QModelIndex &index)
+{
+    deleteBreakpointAction->setEnabled(index.isValid());
+}
+
+void QScriptBreakpointsWidgetPrivate::_q_onNewBreakpointRequest(const QString &fileName, int lineNumber)
+{
+    QScriptBreakpointData data(fileName, lineNumber);
+    q_func()->breakpointsModel()->setBreakpoint(data);
+}
+
+class QScriptBreakpointsItemDelegate : public QStyledItemDelegate
+{
+    Q_OBJECT
+public:
+    QScriptBreakpointsItemDelegate(QObject *parent = 0)
+        : QStyledItemDelegate(parent) {}
+
+    QWidget *createEditor(QWidget *parent,
+                          const QStyleOptionViewItem &option,
+                          const QModelIndex &index) const
+    {
+        QWidget *editor = QStyledItemDelegate::createEditor(parent, option, index);
+        if (index.column() == 2) {
+            // condition
+            QLineEdit *le = qobject_cast<QLineEdit*>(editor);
+            if (le) {
+                QObject::connect(le, SIGNAL(textEdited(QString)),
+                                 this, SLOT(validateInput(QString)));
+            }
+        }
+        return editor;
+    }
+
+    bool eventFilter(QObject *editor, QEvent *event)
+    {
+        if (QLineEdit *le = qobject_cast<QLineEdit*>(editor)) {
+            if (event->type() == QEvent::KeyPress) {
+                int key = static_cast<QKeyEvent*>(event)->key();
+                if ((key == Qt::Key_Enter) || (key == Qt::Key_Return)) {
+                    if (QScriptEngine::checkSyntax(le->text()).state() != QScriptSyntaxCheckResult::Valid) {
+                        // ignore when script contains syntax error
+                        return true;
+                    }
+                }
+            }
+        }
+        return QStyledItemDelegate::eventFilter(editor, event);
+    }
+
+    void setModelData(QWidget *editor, QAbstractItemModel *model,
+                      const QModelIndex &index) const
+    {
+        if (index.column() == 2) {
+            // check that the syntax is OK
+            QString condition = qobject_cast<QLineEdit*>(editor)->text();
+            if (QScriptEngine::checkSyntax(condition).state() != QScriptSyntaxCheckResult::Valid)
+                return;
+        }
+        QStyledItemDelegate::setModelData(editor, model, index);
+    }
+
+private Q_SLOTS:
+    void validateInput(const QString &text)
+    {
+        QWidget *editor = qobject_cast<QWidget*>(sender());
+        QPalette pal = editor->palette();
+        QColor col;
+        bool ok = (QScriptEngine::checkSyntax(text).state() == QScriptSyntaxCheckResult::Valid);
+        if (ok) {
+            col = Qt::white;
+        } else {
+            QScriptSyntaxCheckResult result = QScriptEngine::checkSyntax(
+                text + QLatin1Char('\n'));
+            if (result.state() == QScriptSyntaxCheckResult::Intermediate)
+                col = QColor(255, 240, 192);
+            else
+                col = QColor(255, 102, 102);
+        }
+        pal.setColor(QPalette::Active, QPalette::Base, col);
+        editor->setPalette(pal);
+    }
+};
+
+QScriptBreakpointsWidget::QScriptBreakpointsWidget(QWidget *parent)
+    : QScriptBreakpointsWidgetInterface(*new QScriptBreakpointsWidgetPrivate, parent, 0)
+{
+    Q_D(QScriptBreakpointsWidget);
+    d->view = new QTreeView();
+//    d->view->setEditTriggers(QAbstractItemView::NoEditTriggers);
+    d->view->setEditTriggers(QAbstractItemView::AllEditTriggers);
+//    d->view->setAlternatingRowColors(true);
+    d->view->setRootIsDecorated(false);
+    d->view->setSelectionBehavior(QAbstractItemView::SelectRows);
+//    d->view->header()->hide();
+//    d->view->header()->setDefaultAlignment(Qt::AlignLeft);
+//    d->view->header()->setResizeMode(QHeaderView::ResizeToContents);
+    d->view->setItemDelegate(new QScriptBreakpointsItemDelegate(this));
+
+    d->newBreakpointWidget = new QScriptNewBreakpointWidget();
+    d->newBreakpointWidget->hide();
+    QObject::connect(d->newBreakpointWidget, SIGNAL(newBreakpointRequest(QString,int)),
+                     this, SLOT(_q_onNewBreakpointRequest(QString,int)));
+
+    QIcon newBreakpointIcon;
+    newBreakpointIcon.addPixmap(d->pixmap(QString::fromLatin1("new.png")), QIcon::Normal);
+    QAction *newBreakpointAction = new QAction(newBreakpointIcon, tr("New"), this);
+    QObject::connect(newBreakpointAction, SIGNAL(triggered()),
+                     this, SLOT(_q_newBreakpoint()));
+
+    QIcon deleteBreakpointIcon;
+    deleteBreakpointIcon.addPixmap(d->pixmap(QString::fromLatin1("delete.png")), QIcon::Normal);
+    d->deleteBreakpointAction = new QAction(deleteBreakpointIcon, tr("Delete"), this);
+    d->deleteBreakpointAction->setEnabled(false);
+    QObject::connect(d->deleteBreakpointAction, SIGNAL(triggered()),
+                     this, SLOT(_q_deleteBreakpoint()));
+
+#ifndef QT_NO_TOOLBAR
+    QToolBar *toolBar = new QToolBar();
+    toolBar->addAction(newBreakpointAction);
+    toolBar->addAction(d->deleteBreakpointAction);
+#endif
+
+    QVBoxLayout *vbox = new QVBoxLayout(this);
+    vbox->setMargin(0);
+#ifndef QT_NO_TOOLBAR
+    vbox->addWidget(toolBar);
+#endif
+    vbox->addWidget(d->newBreakpointWidget);
+    vbox->addWidget(d->view);
+}
+
+QScriptBreakpointsWidget::~QScriptBreakpointsWidget()
+{
+}
+
+/*!
+  \reimp
+*/
+QScriptBreakpointsModel *QScriptBreakpointsWidget::breakpointsModel() const
+{
+    Q_D(const QScriptBreakpointsWidget);
+    return qobject_cast<QScriptBreakpointsModel*>(d->view->model());
+}
+
+/*!
+  \reimp
+*/
+void QScriptBreakpointsWidget::setBreakpointsModel(QScriptBreakpointsModel *model)
+{
+    Q_D(QScriptBreakpointsWidget);
+    d->view->setModel(model);
+    d->view->header()->resizeSection(0, 50);
+    QObject::connect(d->view->selectionModel(), SIGNAL(currentChanged(QModelIndex,QModelIndex)),
+                     this, SLOT(_q_onCurrentChanged(QModelIndex)));
+}
+
+/*!
+  \reimp
+*/
+QScriptDebuggerScriptsModel *QScriptBreakpointsWidget::scriptsModel() const
+{
+    Q_D(const QScriptBreakpointsWidget);
+    return d->scriptsModel;
+}
+
+/*!
+  \reimp
+*/
+void QScriptBreakpointsWidget::setScriptsModel(QScriptDebuggerScriptsModel *model)
+{
+    Q_D(QScriptBreakpointsWidget);
+    d->scriptsModel = model;
+    QCompleter *completer = new QCompleter(model, this);
+    completer->setCompletionRole(Qt::DisplayRole);
+    d->newBreakpointWidget->setCompleter(completer);
+}
+
+/*!
+  \reimp
+*/
+void QScriptBreakpointsWidget::keyPressEvent(QKeyEvent *e)
+{
+    Q_D(QScriptBreakpointsWidget);
+    if (e->key() == Qt::Key_Delete) {
+        QModelIndex index = d->view->currentIndex();
+        if (!index.isValid())
+            return;
+        int id = breakpointsModel()->breakpointIdAt(index.row());
+        breakpointsModel()->deleteBreakpoint(id);
+    }
+}
+
+QT_END_NAMESPACE
+
+#include "qscriptbreakpointswidget.moc"
+
+#include "moc_qscriptbreakpointswidget_p.cpp"
diff --git a/src/scripttools/debugging/qscriptbreakpointswidget_p.h b/src/scripttools/debugging/qscriptbreakpointswidget_p.h
new file mode 100644
index 0000000..fbb4514
--- /dev/null
+++ b/src/scripttools/debugging/qscriptbreakpointswidget_p.h
@@ -0,0 +1,90 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTBREAKPOINTSWIDGET_P_H
+#define QSCRIPTBREAKPOINTSWIDGET_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscriptbreakpointswidgetinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptBreakpointsWidgetPrivate;
+class Q_AUTOTEST_EXPORT QScriptBreakpointsWidget:
+    public QScriptBreakpointsWidgetInterface
+{
+    Q_OBJECT
+public:
+    QScriptBreakpointsWidget(QWidget *parent = 0);
+    ~QScriptBreakpointsWidget();
+
+    QScriptBreakpointsModel *breakpointsModel() const;
+    void setBreakpointsModel(QScriptBreakpointsModel *model);
+
+    QScriptDebuggerScriptsModel *scriptsModel() const;
+    void setScriptsModel(QScriptDebuggerScriptsModel *model);
+
+protected:
+    void keyPressEvent(QKeyEvent *e);
+
+private:
+    Q_PRIVATE_SLOT(d_func(), void _q_newBreakpoint())
+    Q_PRIVATE_SLOT(d_func(), void _q_deleteBreakpoint())
+    Q_PRIVATE_SLOT(d_func(), void _q_onCurrentChanged(const QModelIndex &))
+    Q_PRIVATE_SLOT(d_func(), void _q_onNewBreakpointRequest(const QString &, int))
+
+    Q_DECLARE_PRIVATE(QScriptBreakpointsWidget)
+    Q_DISABLE_COPY(QScriptBreakpointsWidget)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptbreakpointswidgetinterface.cpp b/src/scripttools/debugging/qscriptbreakpointswidgetinterface.cpp
new file mode 100644
index 0000000..b3a7da0
--- /dev/null
+++ b/src/scripttools/debugging/qscriptbreakpointswidgetinterface.cpp
@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptbreakpointswidgetinterface_p.h"
+#include "qscriptbreakpointswidgetinterface_p_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QScriptBreakpointsWidgetInterfacePrivate::QScriptBreakpointsWidgetInterfacePrivate()
+{
+}
+
+QScriptBreakpointsWidgetInterfacePrivate::~QScriptBreakpointsWidgetInterfacePrivate()
+{
+}
+
+QScriptBreakpointsWidgetInterface::~QScriptBreakpointsWidgetInterface()
+{
+}
+
+QScriptBreakpointsWidgetInterface::QScriptBreakpointsWidgetInterface(
+    QScriptBreakpointsWidgetInterfacePrivate &dd,
+    QWidget *parent, Qt::WindowFlags flags)
+    : QWidget(dd, parent, flags)
+{
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptbreakpointswidgetinterface_p.h b/src/scripttools/debugging/qscriptbreakpointswidgetinterface_p.h
new file mode 100644
index 0000000..c74b650
--- /dev/null
+++ b/src/scripttools/debugging/qscriptbreakpointswidgetinterface_p.h
@@ -0,0 +1,92 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTBREAKPOINTSWIDGETINTERFACE_P_H
+#define QSCRIPTBREAKPOINTSWIDGETINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/qwidget.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptBreakpointsModel;
+class QScriptDebuggerScriptsModel;
+
+class QScriptBreakpointsWidgetInterfacePrivate;
+class Q_AUTOTEST_EXPORT QScriptBreakpointsWidgetInterface:
+    public QWidget
+{
+    Q_OBJECT
+public:
+    ~QScriptBreakpointsWidgetInterface();
+
+    virtual QScriptBreakpointsModel *breakpointsModel() const = 0;
+    virtual void setBreakpointsModel(QScriptBreakpointsModel *model) = 0;
+
+    virtual QScriptDebuggerScriptsModel *scriptsModel() const = 0;
+    virtual void setScriptsModel(QScriptDebuggerScriptsModel *model) = 0;
+
+Q_SIGNALS:
+    void currentScriptChanged(qint64 scriptId);
+
+protected:
+    QScriptBreakpointsWidgetInterface(
+        QScriptBreakpointsWidgetInterfacePrivate &dd,
+        QWidget *parent, Qt::WindowFlags flags);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptBreakpointsWidgetInterface)
+    Q_DISABLE_COPY(QScriptBreakpointsWidgetInterface)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptbreakpointswidgetinterface_p_p.h b/src/scripttools/debugging/qscriptbreakpointswidgetinterface_p_p.h
new file mode 100644
index 0000000..08b8b18
--- /dev/null
+++ b/src/scripttools/debugging/qscriptbreakpointswidgetinterface_p_p.h
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTBREAKPOINTSWIDGETINTERFACE_P_P_H
+#define QSCRIPTBREAKPOINTSWIDGETINTERFACE_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qwidget_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptBreakpointsWidgetInterface;
+class QScriptBreakpointsWidgetInterfacePrivate
+    : public QWidgetPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptBreakpointsWidgetInterface)
+public:
+    QScriptBreakpointsWidgetInterfacePrivate();
+    ~QScriptBreakpointsWidgetInterfacePrivate();
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptcompletionproviderinterface_p.h b/src/scripttools/debugging/qscriptcompletionproviderinterface_p.h
new file mode 100644
index 0000000..53952cb
--- /dev/null
+++ b/src/scripttools/debugging/qscriptcompletionproviderinterface_p.h
@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTCOMPLETIONPROVIDERINTERFACE_P_H
+#define QSCRIPTCOMPLETIONPROVIDERINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptCompletionTaskInterface;
+
+class Q_AUTOTEST_EXPORT QScriptCompletionProviderInterface
+{
+public:
+    enum Option {
+        ConsoleCommandCompletion = 1
+    };
+
+    virtual ~QScriptCompletionProviderInterface() {}
+
+    virtual QScriptCompletionTaskInterface *createCompletionTask(
+        const QString &contents, int cursorPosition,
+        int frameIndex, int options) = 0;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptcompletiontask.cpp b/src/scripttools/debugging/qscriptcompletiontask.cpp
new file mode 100644
index 0000000..5f74d11
--- /dev/null
+++ b/src/scripttools/debugging/qscriptcompletiontask.cpp
@@ -0,0 +1,307 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptcompletiontask_p.h"
+#include "qscriptcompletiontaskinterface_p_p.h"
+#include "qscriptdebuggerconsole_p.h"
+#include "qscriptdebuggerconsolecommand_p.h"
+#include "qscriptdebuggerconsolecommandmanager_p.h"
+#include "qscriptdebuggercommandschedulerjob_p.h"
+#include "qscriptdebuggercommandschedulerfrontend_p.h"
+#include "qscriptdebuggerjobschedulerinterface_p.h"
+#include "qscriptdebuggerresponse_p.h"
+
+#include "private/qobject_p.h"
+
+#include <QtCore/qset.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptCompletionTaskPrivate
+    : public QScriptCompletionTaskInterfacePrivate
+{
+    Q_DECLARE_PUBLIC(QScriptCompletionTask)
+public:
+    QScriptCompletionTaskPrivate();
+    ~QScriptCompletionTaskPrivate();
+
+    void completeScriptExpression();
+    void emitFinished();
+
+    QString contents;
+    int cursorPosition;
+    int frameIndex;
+    QScriptDebuggerCommandSchedulerInterface *commandScheduler;
+    QScriptDebuggerJobSchedulerInterface *jobScheduler;
+    QScriptDebuggerConsole *console;
+};
+
+QScriptCompletionTaskPrivate::QScriptCompletionTaskPrivate()
+    : cursorPosition(0), frameIndex(0), commandScheduler(0),
+      jobScheduler(0), console(0)
+{
+}
+
+QScriptCompletionTaskPrivate::~QScriptCompletionTaskPrivate()
+{
+}
+
+class QScriptCompleteExpressionJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    QScriptCompleteExpressionJob(int frameIndex, const QStringList &path,
+                                 QScriptCompletionTaskPrivate *task,
+                                 QScriptDebuggerCommandSchedulerInterface *scheduler)
+        : QScriptDebuggerCommandSchedulerJob(scheduler),
+          m_frameIndex(frameIndex), m_path(path), m_task(task)
+        {}
+
+    void start()
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleGetCompletions(m_frameIndex, m_path);
+    }
+    void handleResponse(const QScriptDebuggerResponse &response, int /*commandId*/)
+    {
+        m_task->results = response.result().toStringList();
+        m_task->emitFinished();
+        finish();
+    }
+
+private:
+    int m_frameIndex;
+    QStringList m_path;
+    QScriptCompletionTaskPrivate *m_task;
+};
+
+namespace {
+
+static bool isIdentChar(const QChar &ch)
+{
+    static QChar underscore = QLatin1Char('_');
+    return ch.isLetter() || (ch == underscore);
+}
+
+static bool isPrefixOf(const QString &prefix, const QString &what)
+{
+    return ((what.length() > prefix.length())
+            && what.startsWith(prefix));
+}
+
+} // namespace
+
+class QScriptCompleteScriptsJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    QScriptCompleteScriptsJob(const QString &prefix, QScriptCompletionTaskPrivate *task,
+                              QScriptDebuggerCommandSchedulerInterface *scheduler)
+        : QScriptDebuggerCommandSchedulerJob(scheduler),
+          m_prefix(prefix), m_task(task)
+        {}
+
+    void start()
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleGetScripts();
+    }
+    void handleResponse(const QScriptDebuggerResponse &response, int /*commandId*/)
+    {
+        QScriptScriptMap scripts = response.resultAsScripts();
+        QScriptScriptMap::const_iterator it;
+        for (it = scripts.constBegin(); it != scripts.constEnd(); ++it) {
+            QString fileName = it.value().fileName();
+            if (isPrefixOf(m_prefix, fileName))
+                m_task->results.append(fileName);
+        }
+        m_task->emitFinished();
+        finish();
+    }
+private:
+    QString m_prefix;
+    QScriptCompletionTaskPrivate *m_task;
+};
+
+void QScriptCompletionTaskPrivate::completeScriptExpression()
+{
+    int pos = cursorPosition;
+    if ((pos > 0) && contents.at(pos-1).isNumber()) {
+        // completion of numbers is pointless
+        emitFinished();
+        return;
+    }
+
+    while ((pos > 0) && isIdentChar(contents.at(pos-1)))
+        --pos;
+    int pos2 = cursorPosition - 1;
+    while ((pos2 < contents.size()-1) && isIdentChar(contents.at(pos2+1)))
+        ++pos2;
+    QString ident = contents.mid(pos, pos2 - pos + 1);
+    position = pos;
+
+    QStringList path;
+    path.append(ident);
+    while ((pos > 0) && (contents.at(pos-1) == QLatin1Char('.'))) {
+        --pos;
+        pos2 = pos;
+        while ((pos > 0) && isIdentChar(contents.at(pos-1)))
+            --pos;
+        path.prepend(contents.mid(pos, pos2 - pos));
+    }
+
+    length = path.last().length();
+    type = QScriptCompletionTask::ScriptIdentifierCompletion;
+
+    QScriptDebuggerJob *job = new QScriptCompleteExpressionJob(frameIndex, path, this, commandScheduler);
+    jobScheduler->scheduleJob(job);
+}
+
+void QScriptCompletionTaskPrivate::emitFinished()
+{
+    emit q_func()->finished();
+}
+
+QScriptCompletionTask::QScriptCompletionTask(
+    const QString &contents, int cursorPosition, int frameIndex,
+    QScriptDebuggerCommandSchedulerInterface *commandScheduler,
+    QScriptDebuggerJobSchedulerInterface *jobScheduler,
+    QScriptDebuggerConsole *console,
+    QObject *parent)
+    : QScriptCompletionTaskInterface(
+        *new QScriptCompletionTaskPrivate, parent)
+{
+    Q_D(QScriptCompletionTask);
+    d->contents = contents;
+    d->cursorPosition = cursorPosition;
+    if ((frameIndex == -1) && console)
+        d->frameIndex = console->currentFrameIndex();
+    else
+        d->frameIndex = frameIndex;
+    d->commandScheduler = commandScheduler;
+    d->jobScheduler = jobScheduler;
+    d->console = console;
+}
+
+QScriptCompletionTask::~QScriptCompletionTask()
+{
+}
+
+void QScriptCompletionTask::start()
+{
+    Q_D(QScriptCompletionTask);
+    d->type = NoCompletion;
+    // see if we're typing a command
+    // ### don't hardcode the command prefix
+    QRegExp cmdRx(QString::fromLatin1("^\\s*\\.([a-zA-Z]*)"));
+    int cmdIndex = cmdRx.indexIn(d->contents);
+    if ((cmdIndex != -1) && d->console) {
+        int len = cmdRx.matchedLength();
+        QString prefix = cmdRx.capturedTexts().at(1);
+        if ((d->cursorPosition >= cmdIndex) && (d->cursorPosition <= (cmdIndex+len))) {
+            // editing command --> get command completions
+            d->results = d->console->commandManager()->completions(prefix);
+            d->position = cmdRx.pos(1);
+            d->length = prefix.length();
+            d->type = CommandNameCompletion;
+            d->appendix = QString::fromLatin1(" ");
+            emit finished();
+        } else {
+            QScriptDebuggerConsoleCommand *cmd = d->console->commandManager()->findCommand(prefix);
+            if (!cmd) {
+                emit finished();
+                return;
+            }
+            // editing an argument
+            int argNum = 0;
+            QString arg;
+            int pos = cmdIndex + len;
+            while (pos < d->contents.size()) {
+                while ((pos < d->contents.size()) && d->contents.at(pos).isSpace())
+                    ++pos;
+                if (pos < d->contents.size()) {
+                    int pos2 = pos + 1;
+                    while ((pos2 < d->contents.size()) && !d->contents.at(pos2).isSpace())
+                        ++pos2;
+                    if ((d->cursorPosition >= pos) && (d->cursorPosition <= pos2)) {
+                        arg = d->contents.mid(pos, pos2 - pos);
+                        break;
+                    }
+                    pos = pos2;
+                    ++argNum;
+                }
+            }
+            QString argType = cmd->argumentTypes().value(argNum);
+            if (!argType.isEmpty()) {
+                if (argType == QLatin1String("command-or-group-name")) {
+                    d->results = d->console->commandManager()->completions(arg);
+                } else if (argType == QLatin1String("script-filename")) {
+                    d->position = pos;
+                    d->length = arg.length();
+                    d->type = CommandArgumentCompletion;
+                    QScriptDebuggerJob *job = new QScriptCompleteScriptsJob(arg, d, d->commandScheduler);
+                    d->jobScheduler->scheduleJob(job);
+                } else if (argType == QLatin1String("subcommand-name")) {
+                    for (int i = 0; i < cmd->subCommands().size(); ++i) {
+                        QString name = cmd->subCommands().at(i);
+                        if (isPrefixOf(arg, name))
+                            d->results.append(name);
+                    }
+                    qStableSort(d->results);
+                } else if (argType == QLatin1String("script")) {
+                    d->completeScriptExpression();
+                } else {
+                    emit finished();
+                }
+                if ((d->type == NoCompletion) && !d->results.isEmpty()) {
+                    d->position = pos;
+                    d->length = arg.length();
+                    d->type = CommandArgumentCompletion;
+                    emit finished();
+                }
+            }
+        }
+    } else {
+        // assume it's an eval expression
+        d->completeScriptExpression();
+    }
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptcompletiontask_p.h b/src/scripttools/debugging/qscriptcompletiontask_p.h
new file mode 100644
index 0000000..ab1c556
--- /dev/null
+++ b/src/scripttools/debugging/qscriptcompletiontask_p.h
@@ -0,0 +1,90 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTCOMPLETIONTASK_P_H
+#define QSCRIPTCOMPLETIONTASK_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscriptcompletiontaskinterface_p.h"
+
+#include <QtCore/qlist.h>
+#include <QtCore/qmap.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerCommandSchedulerInterface;
+class QScriptDebuggerJobSchedulerInterface;
+class QScriptDebuggerConsole;
+
+class QScriptCompletionTaskPrivate;
+class Q_AUTOTEST_EXPORT QScriptCompletionTask
+    : public QScriptCompletionTaskInterface
+{
+    Q_OBJECT
+public:
+    QScriptCompletionTask(
+        const QString &contents, int cursorPosition, int frameIndex,
+        QScriptDebuggerCommandSchedulerInterface *commandScheduler,
+        QScriptDebuggerJobSchedulerInterface *jobScheduler,
+        QScriptDebuggerConsole *console,
+        QObject *parent = 0);
+    ~QScriptCompletionTask();
+
+    void start();
+
+private:
+    Q_DECLARE_PRIVATE(QScriptCompletionTask)
+    Q_DISABLE_COPY(QScriptCompletionTask)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptcompletiontaskinterface.cpp b/src/scripttools/debugging/qscriptcompletiontaskinterface.cpp
new file mode 100644
index 0000000..a21d107
--- /dev/null
+++ b/src/scripttools/debugging/qscriptcompletiontaskinterface.cpp
@@ -0,0 +1,110 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptcompletiontaskinterface_p.h"
+#include "qscriptcompletiontaskinterface_p_p.h"
+
+#include "private/qobject_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QScriptCompletionTaskInterfacePrivate::QScriptCompletionTaskInterfacePrivate()
+{
+    type = QScriptCompletionTaskInterface::NoCompletion;
+}
+
+QScriptCompletionTaskInterfacePrivate::~QScriptCompletionTaskInterfacePrivate()
+{
+}
+
+QScriptCompletionTaskInterface::~QScriptCompletionTaskInterface()
+{
+}
+
+QScriptCompletionTaskInterface::QScriptCompletionTaskInterface(
+    QScriptCompletionTaskInterfacePrivate &dd, QObject *parent)
+    : QObject(dd, parent)
+{
+}
+
+QScriptCompletionTaskInterface::CompletionType QScriptCompletionTaskInterface::completionType() const
+{
+    Q_D(const QScriptCompletionTaskInterface);
+    return static_cast<QScriptCompletionTaskInterface::CompletionType>(d->type);
+}
+
+int QScriptCompletionTaskInterface::resultCount() const
+{
+    Q_D(const QScriptCompletionTaskInterface);
+    return d->results.size();
+}
+
+QString QScriptCompletionTaskInterface::resultAt(int index) const
+{
+    Q_D(const QScriptCompletionTaskInterface);
+    return d->results.value(index);
+}
+
+void QScriptCompletionTaskInterface::addResult(const QString &result)
+{
+    Q_D(QScriptCompletionTaskInterface);
+    d->results.append(result);
+}
+
+int QScriptCompletionTaskInterface::position() const
+{
+    Q_D(const QScriptCompletionTaskInterface);
+    return d->position;
+}
+
+int QScriptCompletionTaskInterface::length() const
+{
+    Q_D(const QScriptCompletionTaskInterface);
+    return d->length;
+}
+
+QString QScriptCompletionTaskInterface::appendix() const
+{
+    Q_D(const QScriptCompletionTaskInterface);
+    return d->appendix;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptcompletiontaskinterface_p.h b/src/scripttools/debugging/qscriptcompletiontaskinterface_p.h
new file mode 100644
index 0000000..8ea24fb
--- /dev/null
+++ b/src/scripttools/debugging/qscriptcompletiontaskinterface_p.h
@@ -0,0 +1,106 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTCOMPLETIONTASKINTERFACE_P_H
+#define QSCRIPTCOMPLETIONTASKINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobject.h>
+
+QT_BEGIN_NAMESPACE
+
+class QString;
+
+class QScriptCompletionTaskInterfacePrivate;
+class Q_AUTOTEST_EXPORT QScriptCompletionTaskInterface
+    : public QObject
+{
+    Q_OBJECT
+public:
+    enum CompletionType {
+        NoCompletion,
+        CommandNameCompletion,
+        CommandArgumentCompletion,
+        ScriptIdentifierCompletion
+    };
+
+    ~QScriptCompletionTaskInterface();
+
+    virtual void start() = 0;
+
+    CompletionType completionType() const;
+
+    int resultCount() const;
+    QString resultAt(int index) const;
+
+    int position() const;
+    int length() const;
+
+    QString appendix() const;
+
+protected:
+    void addResult(const QString &result);
+
+Q_SIGNALS:
+    void finished();
+
+protected:
+    QScriptCompletionTaskInterface(
+        QScriptCompletionTaskInterfacePrivate &dd, QObject *parent);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptCompletionTaskInterface)
+    Q_DISABLE_COPY(QScriptCompletionTaskInterface)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptcompletiontaskinterface_p_p.h b/src/scripttools/debugging/qscriptcompletiontaskinterface_p_p.h
new file mode 100644
index 0000000..b4ca6a6
--- /dev/null
+++ b/src/scripttools/debugging/qscriptcompletiontaskinterface_p_p.h
@@ -0,0 +1,81 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTCOMPLETIONTASKINTERFACE_P_P_H
+#define QSCRIPTCOMPLETIONTASKINTERFACE_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qobject_p.h>
+
+#include <QtCore/qstring.h>
+#include <QtCore/qstringlist.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptCompletionTaskInterface;
+class QScriptCompletionTaskInterfacePrivate
+    : public QObjectPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptCompletionTaskInterface)
+public:
+    QScriptCompletionTaskInterfacePrivate();
+    virtual ~QScriptCompletionTaskInterfacePrivate();
+
+    int type;
+    QStringList results;
+    int position;
+    int length;
+    QString appendix;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebugger.cpp b/src/scripttools/debugging/qscriptdebugger.cpp
new file mode 100644
index 0000000..382ef62
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebugger.cpp
@@ -0,0 +1,1990 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebugger_p.h"
+#include "qscriptdebuggerconsole_p.h"
+#include "qscriptdebuggerconsolecommandmanager_p.h"
+#include "qscriptdebuggerconsolecommandjob_p.h"
+#include "qscriptstdmessagehandler_p.h"
+#include "qscriptdebuggerfrontend_p.h"
+#include "qscriptdebuggereventhandlerinterface_p.h"
+#include "qscriptdebuggerresponsehandlerinterface_p.h"
+#include "qscriptdebuggerjobschedulerinterface_p.h"
+#include "qscriptdebuggerconsolewidgetinterface_p.h"
+#include "qscriptcompletionproviderinterface_p.h"
+#include "qscriptcompletiontask_p.h"
+#include "qscripttooltipproviderinterface_p.h"
+#include "qscriptdebuggerstackwidgetinterface_p.h"
+#include "qscriptdebuggerstackmodel_p.h"
+#include "qscriptdebuggerscriptswidgetinterface_p.h"
+#include "qscriptdebuggerscriptsmodel_p.h"
+#include "qscriptdebuggerlocalswidgetinterface_p.h"
+#include "qscriptdebuggerlocalsmodel_p.h"
+#include "qscriptdebuggercodewidgetinterface_p.h"
+#include "qscriptdebuggercodeviewinterface_p.h"
+#include "qscriptdebuggercodefinderwidgetinterface_p.h"
+#include "qscriptbreakpointswidgetinterface_p.h"
+#include "qscriptbreakpointsmodel_p.h"
+#include "qscriptdebugoutputwidgetinterface_p.h"
+#include "qscripterrorlogwidgetinterface_p.h"
+#include "qscriptdebuggerwidgetfactoryinterface_p.h"
+#include "qscriptdebuggerevent_p.h"
+#include "qscriptdebuggervalue_p.h"
+#include "qscriptdebuggerresponse_p.h"
+#include "qscriptdebuggercommand_p.h"
+#include "qscriptdebuggercommandschedulerfrontend_p.h"
+#include "qscriptdebuggercommandschedulerjob_p.h"
+#include "qscriptdebuggerjob_p_p.h"
+#include "qscriptxmlparser_p.h"
+
+#include "private/qobject_p.h"
+
+#include <QtScript/qscriptcontext.h>
+#include <QtScript/qscriptcontextinfo.h>
+
+#include <QtCore/qcoreapplication.h>
+#include <QtCore/qdir.h>
+#include <QtCore/qfileinfo.h>
+#include <QtCore/qstringlist.h>
+#include <QtCore/qdebug.h>
+
+#include <QtGui/qaction.h>
+#include <QtGui/qevent.h>
+#include <QtGui/qicon.h>
+#include <QtGui/qinputdialog.h>
+#include <QtGui/qmenu.h>
+#include <QtGui/qtoolbar.h>
+#include <QtGui/qtooltip.h>
+
+QT_BEGIN_NAMESPACE
+typedef QPair<QList<qint64>, QList<qint64> > QScriptScriptsDelta;
+typedef QPair<QList<qint64>, QList<qint64> > QScriptContextsDelta;
+QT_END_NAMESPACE
+
+Q_DECLARE_METATYPE(QScriptScriptsDelta)
+
+QT_BEGIN_NAMESPACE
+
+Q_SCRIPT_EXPORT QString qt_scriptToXml(const QString &program, int lineNumber = 1);
+
+namespace {
+
+static int scriptDebuggerCount = 0;
+static bool eventCallbackRegistered = false;
+static bool widgetInPaintEvent = false;
+
+static bool scriptDebuggerEventCallback(void **data)
+{
+    QEvent *event = reinterpret_cast<QEvent*>(data[1]);
+    if (event->type() == QEvent::Paint) {
+        QObject *receiver = reinterpret_cast<QObject*>(data[0]);
+        bool was = widgetInPaintEvent;
+        widgetInPaintEvent = true;
+        QCoreApplication::instance()->notify(receiver, event);
+        widgetInPaintEvent = was;
+        bool *result = reinterpret_cast<bool*>(data[2]);
+        *result = true;
+        return true;
+    }
+    return false;
+}
+
+}
+
+/*!
+  \since 4.5
+  \class QScriptDebugger
+  \internal
+
+  \brief The QScriptDebugger class provides a Qt Script debugger.
+
+  \ingroup script
+
+*/
+
+class QScriptDebuggerPrivate
+    : public QObjectPrivate,
+      public QScriptDebuggerCommandSchedulerInterface,
+      public QScriptDebuggerJobSchedulerInterface,
+      public QScriptDebuggerEventHandlerInterface,
+      public QScriptDebuggerResponseHandlerInterface,
+      public QScriptCompletionProviderInterface,
+      public QScriptToolTipProviderInterface
+{
+    Q_DECLARE_PUBLIC(QScriptDebugger)
+public:
+    QScriptDebuggerPrivate();
+    ~QScriptDebuggerPrivate();
+
+    int scheduleJob(QScriptDebuggerJob *job);
+    void finishJob(QScriptDebuggerJob *job);
+    void hibernateUntilEvaluateFinished(QScriptDebuggerJob *job);
+
+    void maybeStartNewJob();
+
+    int scheduleCommand(const QScriptDebuggerCommand &command,
+                        QScriptDebuggerResponseHandlerInterface *responseHandler);
+
+    void handleResponse(
+        const QScriptDebuggerResponse &response, int commandId);
+    bool debuggerEvent(const QScriptDebuggerEvent &event);
+
+    QScriptCompletionTaskInterface *createCompletionTask(
+        const QString &contents, int cursorPosition, int frameIndex, int options);
+
+    void showToolTip(const QPoint &pos, int frameIndex,
+                     int lineNumber, const QStringList &path);
+
+    static QPixmap pixmap(const QString &path);
+
+    void startInteraction(QScriptDebuggerEvent::Type type,
+                          qint64 scriptId, int lineNumber);
+    void sync();
+    void loadLocals(int frameIndex);
+    QScriptDebuggerLocalsModel *createLocalsModel();
+    void selectScriptForFrame(int frameIndex);
+    void emitStoppedSignal();
+
+    void maybeDelete(QWidget *widget);
+
+    // private slots
+    void _q_onLineEntered(const QString &contents);
+    void _q_onCurrentFrameChanged(int frameIndex);
+    void _q_onCurrentScriptChanged(qint64 scriptId);
+    void _q_onScriptLocationSelected(int lineNumber);
+    void _q_interrupt();
+    void _q_continue();
+    void _q_stepInto();
+    void _q_stepOver();
+    void _q_stepOut();
+    void _q_runToCursor();
+    void _q_runToNewScript();
+    void _q_toggleBreakpoint();
+    void _q_clearDebugOutput();
+    void _q_clearErrorLog();
+    void _q_clearConsole();
+    void _q_findInScript();
+    void _q_findNextInScript();
+    void _q_findPreviousInScript();
+    void _q_onFindCodeRequest(const QString &, int);
+    void _q_goToLine();
+
+    void executeConsoleCommand(const QString &command);
+    void findCode(const QString &exp, int options);
+
+    QScriptDebuggerFrontend *frontend;
+
+    bool interactive;
+    QScriptDebuggerConsole *console;
+
+    int nextJobId;
+    QList<QScriptDebuggerJob*> pendingJobs;
+    QList<int> pendingJobIds;
+    QScriptDebuggerJob *activeJob;
+    bool activeJobHibernating;
+    QHash<int, QScriptDebuggerCommand> watchedCommands;
+    QHash<int, QScriptDebuggerResponseHandlerInterface*> responseHandlers;
+
+    QScriptDebuggerConsoleWidgetInterface *consoleWidget;
+    QScriptDebuggerStackWidgetInterface *stackWidget;
+    QScriptDebuggerStackModel *stackModel;
+    QScriptDebuggerScriptsWidgetInterface *scriptsWidget;
+    QScriptDebuggerScriptsModel *scriptsModel;
+    QScriptDebuggerLocalsWidgetInterface *localsWidget;
+    QHash<int, QScriptDebuggerLocalsModel*> localsModels;
+    QScriptDebuggerCodeWidgetInterface *codeWidget;
+    QScriptDebuggerCodeFinderWidgetInterface *codeFinderWidget;
+    QScriptBreakpointsWidgetInterface *breakpointsWidget;
+    QScriptBreakpointsModel *breakpointsModel;
+    QScriptDebugOutputWidgetInterface *debugOutputWidget;
+    QScriptErrorLogWidgetInterface *errorLogWidget;
+    QScriptDebuggerWidgetFactoryInterface *widgetFactory;
+
+    QAction *interruptAction;
+    QAction *continueAction;
+    QAction *stepIntoAction;
+    QAction *stepOverAction;
+    QAction *stepOutAction;
+    QAction *runToCursorAction;
+    QAction *runToNewScriptAction;
+
+    QAction *toggleBreakpointAction;
+
+    QAction *clearDebugOutputAction;
+    QAction *clearErrorLogAction;
+    QAction *clearConsoleAction;
+
+    QAction *findInScriptAction;
+    QAction *findNextInScriptAction;
+    QAction *findPreviousInScriptAction;
+    QAction *goToLineAction;
+
+    int updatesEnabledTimerId;
+};
+
+QScriptDebuggerPrivate::QScriptDebuggerPrivate()
+{
+    frontend = 0;
+    activeJob = 0;
+    activeJobHibernating = false;
+    nextJobId = 0;
+    interactive = false;
+
+    console = new QScriptDebuggerConsole();
+    QString scriptsPath = QLatin1String(":/qt/scripttools/debugging/scripts/commands");
+    QScriptStdMessageHandler tmp;
+    console->loadScriptedCommands(scriptsPath, &tmp);
+
+    consoleWidget = 0;
+    stackWidget = 0;
+    stackModel = 0;
+    scriptsWidget = 0;
+    scriptsModel = 0;
+    localsWidget = 0;
+    codeWidget = 0;
+    codeFinderWidget = 0;
+    breakpointsWidget = 0;
+    breakpointsModel = 0;
+    debugOutputWidget = 0;
+    errorLogWidget = 0;
+    widgetFactory = 0;
+
+    interruptAction = 0;
+    continueAction = 0;
+    stepIntoAction = 0;
+    stepOverAction = 0;
+    stepOutAction = 0;
+    runToCursorAction = 0;
+    runToNewScriptAction = 0;
+
+    toggleBreakpointAction = 0;
+
+    clearErrorLogAction = 0;
+    clearDebugOutputAction = 0;
+    clearConsoleAction = 0;
+
+    findInScriptAction = 0;
+    findNextInScriptAction = 0;
+    findPreviousInScriptAction = 0;
+    goToLineAction = 0;
+
+    updatesEnabledTimerId = -1;
+}
+
+QScriptDebuggerPrivate::~QScriptDebuggerPrivate()
+{
+    delete console;
+    qDeleteAll(pendingJobs);
+    delete activeJob;
+    maybeDelete(consoleWidget);
+    maybeDelete(stackWidget);
+    maybeDelete(scriptsWidget);
+    maybeDelete(localsWidget);
+    maybeDelete(codeWidget);
+    maybeDelete(codeFinderWidget);
+    maybeDelete(breakpointsWidget);
+    maybeDelete(debugOutputWidget);
+    maybeDelete(errorLogWidget);
+}
+
+void QScriptDebuggerPrivate::maybeDelete(QWidget *widget)
+{
+    if (widget && !widget->parent())
+        delete widget;
+}
+
+QPixmap QScriptDebuggerPrivate::pixmap(const QString &path)
+{
+    static QString prefix = QString::fromLatin1(":/qt/scripttools/debugging/images/");
+    return QPixmap(prefix + path);
+}
+
+/*!
+  \reimp
+*/
+int QScriptDebuggerPrivate::scheduleJob(QScriptDebuggerJob *job)
+{
+    QScriptDebuggerJobPrivate *priv = QScriptDebuggerJobPrivate::get(job);
+    Q_ASSERT(priv->jobScheduler == 0);
+    priv->jobScheduler = this;
+    int id = nextJobId;
+    pendingJobs.append(job);
+    pendingJobIds.append(id);
+    maybeStartNewJob();
+    return id;
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerPrivate::finishJob(QScriptDebuggerJob *job)
+{
+    Q_UNUSED(job);
+    Q_ASSERT(activeJob == job);
+    delete activeJob;
+    activeJob = 0;
+    activeJobHibernating = false;
+    maybeStartNewJob();
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerPrivate::hibernateUntilEvaluateFinished(QScriptDebuggerJob *job)
+{
+    Q_UNUSED(job);
+    Q_ASSERT(activeJob == job);
+    activeJobHibernating = true;
+}
+
+/*!
+  Starts a new job if appropriate.
+*/
+void QScriptDebuggerPrivate::maybeStartNewJob()
+{
+    if (activeJob || pendingJobs.isEmpty())
+        return;
+    activeJob = pendingJobs.takeFirst();
+    activeJob->start();
+}
+
+/*!
+  \reimp
+*/
+int QScriptDebuggerPrivate::scheduleCommand(
+    const QScriptDebuggerCommand &command,
+    QScriptDebuggerResponseHandlerInterface *responseHandler)
+{
+    if (!frontend)
+        return -1;
+    int id = frontend->scheduleCommand(command, this);
+    if (responseHandler && (responseHandler != this))
+        responseHandlers.insert(id, responseHandler);
+    if ((command.type() == QScriptDebuggerCommand::SetBreakpoint)
+        || (command.type() == QScriptDebuggerCommand::SetBreakpointData)
+        || (command.type() == QScriptDebuggerCommand::DeleteBreakpoint)) {
+        // need to watch this command and update the breakpoints model afterwards
+        watchedCommands.insert(id, command);
+    }
+    return id;
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerPrivate::handleResponse(
+    const QScriptDebuggerResponse &response, int commandId)
+{
+    Q_Q(QScriptDebugger);
+    if (watchedCommands.contains(commandId)) {
+        QScriptDebuggerCommand command = watchedCommands.take(commandId);
+        if (response.error() == QScriptDebuggerResponse::NoError) {
+            if (!breakpointsModel)
+                breakpointsModel = new QScriptBreakpointsModel(this, this, q);
+            switch (command.type()) {
+            case QScriptDebuggerCommand::SetBreakpoint: {
+                int breakpointId = response.resultAsInt();
+                QScriptBreakpointData data = command.breakpointData();
+                breakpointsModel->addBreakpoint(breakpointId, data);
+            }   break;
+            case QScriptDebuggerCommand::SetBreakpointData: {
+                int breakpointId = command.breakpointId();
+                QScriptBreakpointData data = command.breakpointData();
+                breakpointsModel->modifyBreakpoint(breakpointId, data);
+            }   break;
+            case QScriptDebuggerCommand::DeleteBreakpoint: {
+                int breakpointId = command.breakpointId();
+                breakpointsModel->removeBreakpoint(breakpointId);
+            }   break;
+            default:
+                Q_ASSERT(false);
+            }
+        }
+    } else if (response.async()) {
+        interactive = false;
+        // disable/invalidate/enable stuff
+        if (continueAction)
+            continueAction->setEnabled(false);
+        if (stepIntoAction)
+            stepIntoAction->setEnabled(false);
+        if (stepOverAction)
+            stepOverAction->setEnabled(false);
+        if (stepOutAction)
+            stepOutAction->setEnabled(false);
+        if (runToCursorAction)
+            runToCursorAction->setEnabled(false);
+        if (runToNewScriptAction)
+            runToNewScriptAction->setEnabled(false);
+        if (interruptAction)
+            interruptAction->setEnabled(true);
+
+        // the timer is to avoid flicker when stepping
+        if (stackWidget) {
+            stackWidget->setUpdatesEnabled(false);
+            stackWidget->setEnabled(false);
+            if (updatesEnabledTimerId == -1)
+                updatesEnabledTimerId = q->startTimer(75);
+        }
+        if (localsWidget) {
+            localsWidget->setUpdatesEnabled(false);
+            localsWidget->setEnabled(false);
+            if (updatesEnabledTimerId == -1)
+                updatesEnabledTimerId = q->startTimer(75);
+        }
+        if (codeWidget)
+            codeWidget->invalidateExecutionLineNumbers();
+
+        emit q->started();
+    }
+
+    QScriptDebuggerResponseHandlerInterface *realHandler = responseHandlers.take(commandId);
+    if (realHandler)
+        realHandler->handleResponse(response, commandId);
+}
+
+/*!
+  \reimp
+
+  Handles a debugger event from the frontend.
+*/
+bool QScriptDebuggerPrivate::debuggerEvent(const QScriptDebuggerEvent &event)
+{
+    Q_Q(QScriptDebugger);
+    switch (event.type()) {
+    case QScriptDebuggerEvent::None:
+    case QScriptDebuggerEvent::UserEvent:
+    case QScriptDebuggerEvent::MaxUserEvent:
+        Q_ASSERT(false);
+        break;
+
+    case QScriptDebuggerEvent::Trace:
+        if (!debugOutputWidget && widgetFactory)
+            q->setDebugOutputWidget(widgetFactory->createDebugOutputWidget());
+        if (debugOutputWidget)
+            debugOutputWidget->message(QtDebugMsg, event.message());
+        return true; // trace doesn't stall execution
+
+    case QScriptDebuggerEvent::SteppingFinished: {
+        if (!consoleWidget && widgetFactory)
+            q->setConsoleWidget(widgetFactory->createConsoleWidget());
+        if (consoleWidget) {
+            QString msg = event.message();
+            if (!msg.isEmpty())
+                consoleWidget->message(QtDebugMsg, msg);
+        }
+    }   break;
+
+    case QScriptDebuggerEvent::Interrupted:
+    case QScriptDebuggerEvent::LocationReached:
+        break;
+
+    case QScriptDebuggerEvent::Breakpoint: {
+        int bpId = event.breakpointId();
+        if (!consoleWidget && widgetFactory)
+            q->setConsoleWidget(widgetFactory->createConsoleWidget());
+        if (consoleWidget) {
+            consoleWidget->message(QtDebugMsg,
+                                   QString::fromLatin1("Breakpoint %0 at %1, line %2.")
+                                   .arg(bpId).arg(event.fileName())
+                                   .arg(event.lineNumber()));
+        }
+        if (breakpointsModel->breakpointData(bpId).isSingleShot())
+            breakpointsModel->removeBreakpoint(bpId);
+    }   break;
+
+    case QScriptDebuggerEvent::Exception: {
+        if (event.hasExceptionHandler()) {
+            // Let the exception be handled like normal.
+            // We may want to add a "Break on all exceptions" option
+            // to be able to customize this behavior.
+            return true;
+        }
+        if (!consoleWidget && widgetFactory)
+            q->setConsoleWidget(widgetFactory->createConsoleWidget());
+        if (!errorLogWidget && widgetFactory)
+            q->setErrorLogWidget(widgetFactory->createErrorLogWidget());
+        if (consoleWidget || errorLogWidget) {
+            QString fn = event.fileName();
+            if (fn.isEmpty()) {
+                if (event.scriptId() != -1)
+                    fn = QString::fromLatin1("<anonymous script, id=%0>").arg(event.scriptId());
+                else
+                    fn = QString::fromLatin1("<native>");
+            }
+            QString msg = QString::fromLatin1("Uncaught exception at %0:%1: %2").arg(fn)
+                          .arg(event.lineNumber()).arg(event.message());
+            if (consoleWidget)
+                consoleWidget->message(QtCriticalMsg, msg);
+            if (errorLogWidget)
+                errorLogWidget->message(QtCriticalMsg, msg);
+        }
+    }   break;
+
+    case QScriptDebuggerEvent::InlineEvalFinished: {
+        QScriptDebuggerValue result = event.scriptValue();
+        Q_ASSERT(console != 0);
+        int action = console->evaluateAction();
+        console->setEvaluateAction(0);
+        switch (action) {
+        case 0: { // eval command
+            if (activeJob) {
+                if (activeJobHibernating) {
+                    activeJobHibernating = false;
+                    activeJob->evaluateFinished(result);
+                }
+            } else if (consoleWidget) {
+                // ### if the result is an object, need to do a tostring job on it
+//          messageHandler->message(QtDebugMsg, result.toString());
+                if (result.type() != QScriptDebuggerValue::UndefinedValue)
+                    consoleWidget->message(QtDebugMsg, event.message());
+            }
+        }   break;
+        case 1: { // return command
+            QScriptDebuggerCommandSchedulerFrontend frontend(this, this);
+            frontend.scheduleForceReturn(console->currentFrameIndex(), result);
+        }   return false;
+        }
+        if (!event.isNestedEvaluate()) {
+            // in the case when evaluate() was called while the
+            // engine was not running, we don't want to enter interactive mode
+            return true;
+        }
+    }   break;
+
+    case QScriptDebuggerEvent::DebuggerInvocationRequest: {
+        if (!consoleWidget && widgetFactory)
+            q->setConsoleWidget(widgetFactory->createConsoleWidget());
+        if (consoleWidget) {
+            QString fn = event.fileName();
+            if (fn.isEmpty())
+                fn = QString::fromLatin1("<anonymous script, id=%0>").arg(event.scriptId());
+            consoleWidget->message(QtDebugMsg,
+                                   QString::fromLatin1("Debugger invoked from %1, line %2.")
+                                   .arg(fn).arg(event.lineNumber()));
+        }
+    }   break;
+
+    case QScriptDebuggerEvent::ForcedReturn: {
+    }   break;
+
+    }
+
+    if (widgetInPaintEvent) {
+        QString msg = QString::fromLatin1("Suspending evaluation in paintEvent() is not supported; resuming.");
+        if (!consoleWidget && widgetFactory)
+            q->setConsoleWidget(widgetFactory->createConsoleWidget());
+        if (!errorLogWidget && widgetFactory)
+            q->setErrorLogWidget(widgetFactory->createErrorLogWidget());
+        if (consoleWidget)
+            consoleWidget->message(QtWarningMsg, msg);
+        if (errorLogWidget)
+            errorLogWidget->message(QtCriticalMsg, msg);
+        return true;
+    }
+
+    if (activeJobHibernating) {
+        // evaluate() did not finish normally (e.g. due to a breakpoint),
+        // so cancel the job that's waiting for it
+        delete activeJob;
+        activeJob = 0;
+        activeJobHibernating = false;
+    }
+
+    startInteraction(event.type(), event.scriptId(), event.lineNumber());
+    return !interactive;
+}
+
+class QScriptToolTipJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    QScriptToolTipJob(const QPoint &pos, int frameIndex,
+                      int lineNumber, const QStringList &path,
+                      QScriptDebuggerCommandSchedulerInterface *scheduler)
+        : QScriptDebuggerCommandSchedulerJob(scheduler), m_pos(pos),
+          m_frameIndex(frameIndex), m_lineNumber(lineNumber), m_path(path)
+        {}
+
+    void start()
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleGetPropertyExpressionValue(m_frameIndex, m_lineNumber, m_path);
+    }
+    void handleResponse(const QScriptDebuggerResponse &response, int /*commandId*/)
+    {
+        QString tip = response.result().toString();
+        if (tip.indexOf(QLatin1Char('\n')) != -1) {
+            QStringList lines = tip.split(QLatin1Char('\n'));
+            int lineCount = lines.size();
+            if (lineCount > 5) {
+                lines = lines.mid(0, 5);
+                lines.append(QString::fromLatin1("(... %0 more lines ...)").arg(lineCount - 5));
+            }
+            tip = lines.join(QLatin1String("\n"));
+        }
+        QToolTip::showText(m_pos, tip);
+        finish();
+    }
+
+private:
+    QPoint m_pos;
+    int m_frameIndex;
+    int m_lineNumber;
+    QStringList m_path;
+};
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerPrivate::showToolTip(const QPoint &pos, int frameIndex,
+                                         int lineNumber, const QStringList &path)
+{
+    if (frameIndex == -1) {
+        if (stackWidget)
+            frameIndex = stackWidget->currentFrameIndex();
+        else
+            frameIndex = console->currentFrameIndex();
+    }
+    QScriptDebuggerJob *job = new QScriptToolTipJob(pos, frameIndex, lineNumber, path, this);
+    scheduleJob(job);
+}
+
+/*!
+  \reimp
+*/
+QScriptCompletionTaskInterface *QScriptDebuggerPrivate::createCompletionTask(
+    const QString &contents, int cursorPosition, int frameIndex, int options)
+{
+    return new QScriptCompletionTask(
+        contents, cursorPosition, frameIndex, this, this,
+        (options & QScriptCompletionProviderInterface::ConsoleCommandCompletion) ? console : 0);
+}
+
+/*!
+  Slot called when a line has been entered in the console widget.
+*/
+void QScriptDebuggerPrivate::_q_onLineEntered(const QString &contents)
+{
+    QScriptDebuggerConsoleCommandJob *commandJob;
+    commandJob = console->consumeInput(contents, consoleWidget, this);
+    if (commandJob != 0) {
+        scheduleJob(commandJob);
+        consoleWidget->setLineContinuationMode(false);
+    } else if (console->hasIncompleteInput()) {
+        consoleWidget->setLineContinuationMode(true);
+    }
+}
+
+/*!
+  Slot called when the current index has changed in the stack widget.
+*/
+void QScriptDebuggerPrivate::_q_onCurrentFrameChanged(int frameIndex)
+{
+    loadLocals(frameIndex);
+    selectScriptForFrame(frameIndex);
+}
+
+/*!
+  Slot called when the current script has changed in the scripts widget.
+*/
+void QScriptDebuggerPrivate::_q_onCurrentScriptChanged(qint64 scriptId)
+{
+    if (codeWidget && (codeWidget->currentScriptId() != scriptId)) {
+        codeWidget->setCurrentScript(scriptId);
+        QScriptDebuggerCodeViewInterface *view = codeWidget->currentView();
+        if (view)
+            view->setExecutionLineNumber(-1, /*error=*/false);
+    }
+}
+
+void QScriptDebuggerPrivate::_q_onScriptLocationSelected(int lineNumber)
+{
+    QScriptDebuggerCodeViewInterface *view = codeWidget->currentView();
+    if (!view)
+        return;
+    view->gotoLine(lineNumber);
+}
+
+void QScriptDebuggerPrivate::_q_interrupt()
+{
+    executeConsoleCommand(QString::fromLatin1("interrupt"));
+}
+
+void QScriptDebuggerPrivate::_q_continue()
+{
+    executeConsoleCommand(QString::fromLatin1("continue"));
+}
+
+void QScriptDebuggerPrivate::_q_stepInto()
+{
+    executeConsoleCommand(QString::fromLatin1("step"));
+}
+
+void QScriptDebuggerPrivate::_q_stepOver()
+{
+    executeConsoleCommand(QString::fromLatin1("next"));
+}
+
+void QScriptDebuggerPrivate::_q_stepOut()
+{
+    executeConsoleCommand(QString::fromLatin1("finish"));
+}
+
+void QScriptDebuggerPrivate::_q_runToCursor()
+{
+    qint64 scriptId = codeWidget->currentScriptId();
+    int lineNumber = codeWidget->currentView()->cursorLineNumber();
+    QScriptDebuggerCommandSchedulerFrontend frontend(this, this);
+    frontend.scheduleRunToLocation(scriptId, lineNumber);
+}
+
+void QScriptDebuggerPrivate::_q_runToNewScript()
+{
+    QScriptDebuggerCommandSchedulerFrontend frontend(this, this);
+    frontend.scheduleRunToLocation(QString(), -1);
+}
+
+void QScriptDebuggerPrivate::_q_toggleBreakpoint()
+{
+    Q_ASSERT(codeWidget != 0);
+    QScriptDebuggerCodeViewInterface *view = codeWidget->currentView();
+    if (!view)
+        return;
+    qint64 scriptId = codeWidget->currentScriptId();
+    int lineNumber = view->cursorLineNumber();
+    Q_ASSERT(breakpointsModel != 0);
+    int bpId = breakpointsModel->resolveBreakpoint(scriptId, lineNumber);
+    if (bpId != -1) {
+        breakpointsModel->deleteBreakpoint(bpId);
+    } else {
+        QScriptBreakpointData data(scriptId, lineNumber);
+        if (scriptsModel)
+            data.setFileName(scriptsModel->scriptData(scriptId).fileName());
+        breakpointsModel->setBreakpoint(data);
+    }
+}
+
+void QScriptDebuggerPrivate::_q_clearDebugOutput()
+{
+    if (debugOutputWidget)
+        debugOutputWidget->clear();
+}
+
+void QScriptDebuggerPrivate::_q_clearErrorLog()
+{
+    if (errorLogWidget)
+        errorLogWidget->clear();
+}
+
+void QScriptDebuggerPrivate::_q_clearConsole()
+{
+    if (consoleWidget)
+        consoleWidget->clear();
+}
+
+void QScriptDebuggerPrivate::executeConsoleCommand(const QString &command)
+{
+    QString tmp = console->incompleteInput();
+    console->setIncompleteInput(QString());
+    QScriptDebuggerJob *job = console->consumeInput(console->commandPrefix() + command, debugOutputWidget, this);
+    console->setIncompleteInput(tmp);
+    if (job != 0) {
+        scheduleJob(job);
+        // once to send the command...
+        QCoreApplication::processEvents();
+        // ... and once to receive the response
+        QCoreApplication::processEvents();
+    }
+}
+
+void QScriptDebuggerPrivate::_q_findInScript()
+{
+    if (!codeFinderWidget && widgetFactory)
+        q_func()->setCodeFinderWidget(widgetFactory->createCodeFinderWidget());
+    if (codeFinderWidget) {
+        codeFinderWidget->show();
+        codeFinderWidget->setFocus(Qt::OtherFocusReason);
+    }
+}
+
+void QScriptDebuggerPrivate::_q_findNextInScript()
+{
+    findCode(codeFinderWidget->text(), codeFinderWidget->findOptions());
+}
+
+void QScriptDebuggerPrivate::_q_findPreviousInScript()
+{
+    int options = codeFinderWidget->findOptions();
+    options |= QTextDocument::FindBackward;
+    findCode(codeFinderWidget->text(), options);
+}
+
+void QScriptDebuggerPrivate::_q_onFindCodeRequest(
+    const QString &exp, int options)
+{
+    findCode(exp, options);
+    if (findNextInScriptAction)
+        findNextInScriptAction->setEnabled(!exp.isEmpty());
+    if (findPreviousInScriptAction)
+        findPreviousInScriptAction->setEnabled(!exp.isEmpty());
+}
+
+void QScriptDebuggerPrivate::findCode(const QString &exp, int options)
+{
+    QScriptDebuggerCodeViewInterface *view = codeWidget->currentView();
+    if (!view)
+        return;
+    int result = view->find(exp, options);
+    codeFinderWidget->setOK(((result & 0x1) != 0) || exp.isEmpty());
+    codeFinderWidget->setWrapped((result & 0x2) != 0);
+}
+
+void QScriptDebuggerPrivate::_q_goToLine()
+{
+    QScriptDebuggerCodeViewInterface *view = codeWidget->currentView();
+    if (!view)
+        return;
+    bool ok = false;
+    int lineNumber = QInputDialog::getInteger(0, QScriptDebugger::tr("Go to Line"),
+                                              QScriptDebugger::tr("Line:"),
+                                              view->cursorLineNumber(),
+                                              1, INT_MAX, 1, &ok);
+    if (ok)
+        view->gotoLine(lineNumber);
+}
+
+class QScriptDebuggerShowLineJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    QScriptDebuggerShowLineJob(qint64 scriptId, int lineNumber,
+                               QScriptMessageHandlerInterface *messageHandler,
+                               QScriptDebuggerCommandSchedulerInterface *scheduler)
+        : QScriptDebuggerCommandSchedulerJob(scheduler),
+          m_scriptId(scriptId), m_lineNumber(lineNumber),
+        m_messageHandler(messageHandler) {}
+
+    void start()
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleGetScriptData(m_scriptId);
+    }
+    void handleResponse(const QScriptDebuggerResponse &response, int /*commandId*/)
+    {
+        QScriptScriptData data = response.resultAsScriptData();
+        QString line = data.lines(m_lineNumber, 1).value(0);
+        m_messageHandler->message(QtDebugMsg, QString::fromLatin1("%0\t%1")
+                                  .arg(m_lineNumber).arg(line));
+        finish();
+    }
+
+private:
+    qint64 m_scriptId;
+    int m_lineNumber;
+    QScriptMessageHandlerInterface *m_messageHandler;
+};
+
+namespace {
+
+class SyncStackJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    SyncStackJob(QScriptDebuggerPrivate *debugger)
+        : QScriptDebuggerCommandSchedulerJob(debugger),
+          m_debugger(debugger), m_index(0) {}
+    void start()
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleGetContextInfo(m_index); // ### getContextInfos()
+    }
+    void handleResponse(const QScriptDebuggerResponse &response,
+                        int)
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        if (response.error() != QScriptDebuggerResponse::InvalidContextIndex) {
+            m_infos.append(response.resultAsContextInfo());
+            frontend.scheduleGetContextInfo(++m_index);
+        } else {
+            m_debugger->stackModel->setContextInfos(m_infos);
+            if (m_debugger->stackWidget->currentFrameIndex() == -1)
+                m_debugger->stackWidget->setCurrentFrameIndex(0);
+            m_debugger->stackWidget->setUpdatesEnabled(true);
+            m_debugger->stackWidget->setEnabled(true);
+            finish();
+        }
+    }
+
+private:
+    QScriptDebuggerPrivate *m_debugger;
+    int m_index;
+    QList<QScriptContextInfo> m_infos;
+};
+
+class SyncScriptsJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    SyncScriptsJob(QScriptDebuggerPrivate *debugger)
+        : QScriptDebuggerCommandSchedulerJob(debugger),
+          m_debugger(debugger), m_index(-1) {}
+
+    void start()
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleScriptsCheckpoint();
+    }
+    void handleResponse(const QScriptDebuggerResponse &response,
+                        int)
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        if (m_index == -1) {
+            QScriptScriptsDelta delta;
+            delta = qvariant_cast<QScriptScriptsDelta>(response.result());
+
+            const QList<qint64> &removed = delta.second;
+            for (int i = 0; i < removed.size(); ++i)
+                m_debugger->scriptsModel->removeScript(removed.at(i));
+
+            m_added = delta.first;
+            if (!m_added.isEmpty()) {
+                frontend.scheduleGetScriptData(m_added.at(++m_index));
+            } else {
+                m_debugger->scriptsModel->commit();
+                finish();
+            }
+        } else {
+            QScriptScriptData data = response.resultAsScriptData();
+            qint64 scriptId = m_added.at(m_index);
+            m_debugger->scriptsModel->addScript(scriptId, data);
+
+            // ### could be slow, might want to do this in a separate thread
+//            Q_ASSERT_X(false, Q_FUNC_INFO, "implement me");
+            QString xml; // = qt_scriptToXml(data.contents(), data.baseLineNumber());
+            QScriptXmlParser::Result extraInfo = QScriptXmlParser::parse(xml);
+            m_debugger->scriptsModel->addExtraScriptInfo(
+                scriptId, extraInfo.functionsInfo, extraInfo.executableLineNumbers);
+
+            if (++m_index < m_added.size())
+                frontend.scheduleGetScriptData(m_added.at(m_index));
+            else {
+                m_debugger->scriptsModel->commit();
+                finish();
+            }
+        }
+    }
+
+private:
+    QScriptDebuggerPrivate *m_debugger;
+    int m_index;
+    QList<qint64> m_added;
+};
+
+class SyncBreakpointsJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    SyncBreakpointsJob(QScriptDebuggerPrivate *debugger)
+        : QScriptDebuggerCommandSchedulerJob(debugger),
+          m_debugger(debugger), m_index(-1) {}
+    void start()
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleGetBreakpoints();
+    }
+    void handleResponse(const QScriptDebuggerResponse &response,
+                        int)
+    {
+        QScriptBreakpointMap breakpoints = response.resultAsBreakpoints();
+        QScriptBreakpointMap::const_iterator it;
+        for (it = breakpoints.constBegin(); it != breakpoints.constEnd(); ++it) {
+            int id = it.key();
+            QScriptBreakpointData newData = it.value();
+            QScriptBreakpointData existingData = m_debugger->breakpointsModel->breakpointData(id);
+            if (existingData.isValid() && (existingData != newData))
+                m_debugger->breakpointsModel->modifyBreakpoint(id, newData);
+        }
+        finish();
+    }
+
+private:
+    QScriptDebuggerPrivate *m_debugger;
+    int m_index;
+    QList<QScriptContextInfo> m_infos;
+};
+
+class SyncLocalsJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    SyncLocalsJob(QScriptDebuggerPrivate *debugger)
+        : QScriptDebuggerCommandSchedulerJob(debugger),
+          m_debugger(debugger) {}
+
+    void start()
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleContextsCheckpoint();
+    }
+    void handleResponse(const QScriptDebuggerResponse &response,
+                        int)
+    {
+        QScriptContextsDelta delta = qvariant_cast<QScriptContextsDelta>(response.result());
+        for (int i = 0; i < delta.first.size(); ++i) {
+            QScriptDebuggerLocalsModel *model = m_debugger->localsModels.take(delta.first.at(i));
+            delete model;
+        }
+        finish();
+    }
+
+private:
+    QScriptDebuggerPrivate *m_debugger;
+};
+
+class LoadLocalsJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    LoadLocalsJob(QScriptDebuggerPrivate *debugger, int frameIndex)
+        : QScriptDebuggerCommandSchedulerJob(debugger),
+          m_debugger(debugger), m_frameIndex(frameIndex) {}
+
+    void start()
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleGetContextId(m_frameIndex);
+    }
+    void handleResponse(const QScriptDebuggerResponse &response,
+                        int)
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        qint64 contextId = response.resultAsLongLong();
+        QScriptDebuggerLocalsModel *model = m_debugger->localsModels.value(contextId);
+        if (model) {
+            model->sync(m_frameIndex);
+        } else {
+            model = m_debugger->createLocalsModel();
+            m_debugger->localsModels.insert(contextId, model);
+            model->init(m_frameIndex);
+        }
+        if (m_debugger->localsWidget) {
+            if (m_debugger->localsWidget->localsModel() != model) // ### bug in qtreeview
+                m_debugger->localsWidget->setLocalsModel(model);
+            m_debugger->localsWidget->setUpdatesEnabled(true);
+            m_debugger->localsWidget->setEnabled(true);
+        }
+        finish();
+    }
+
+private:
+    QScriptDebuggerPrivate *m_debugger;
+    int m_frameIndex;
+};
+
+class EmitStoppedSignalJob : public QScriptDebuggerJob
+{
+public:
+    EmitStoppedSignalJob(QScriptDebuggerPrivate *debugger)
+        : m_debugger(debugger) {}
+
+    void start()
+    {
+        m_debugger->emitStoppedSignal();
+        finish();
+    }
+
+private:
+    QScriptDebuggerPrivate *m_debugger;
+};
+
+} // namespace
+
+void QScriptDebuggerPrivate::startInteraction(QScriptDebuggerEvent::Type type,
+                                              qint64 scriptId, int lineNumber)
+{
+    Q_Q(QScriptDebugger);
+    if (type != QScriptDebuggerEvent::InlineEvalFinished) {
+        if (stackWidget)
+            stackWidget->setCurrentFrameIndex(0);
+        console->setCurrentFrameIndex(0);
+        console->setCurrentScriptId(scriptId);
+        console->setCurrentLineNumber(lineNumber);
+    }
+
+    if ((scriptId != -1) && consoleWidget) {
+        QScriptDebuggerJob *job = new QScriptDebuggerShowLineJob(scriptId, lineNumber, consoleWidget, this);
+        scheduleJob(job);
+    }
+
+    sync();
+
+    if (!interactive) {
+        interactive = true;
+        if (updatesEnabledTimerId != -1) {
+            q->killTimer(updatesEnabledTimerId);
+            updatesEnabledTimerId = -1;
+        }
+        console->bumpSessionId();
+        scheduleJob(new EmitStoppedSignalJob(this));
+    }
+
+    if (consoleWidget)
+        consoleWidget->activateWindow();
+    else if (codeWidget)
+        codeWidget->activateWindow();
+
+    if (continueAction)
+        continueAction->setEnabled(true);
+    if (stepIntoAction)
+        stepIntoAction->setEnabled(true);
+    if (stepOverAction)
+        stepOverAction->setEnabled(true);
+    if (stepOutAction)
+        stepOutAction->setEnabled(true);
+    if (runToCursorAction)
+        runToCursorAction->setEnabled(true);
+    if (runToNewScriptAction)
+        runToNewScriptAction->setEnabled(true);
+    if (interruptAction)
+        interruptAction->setEnabled(false);
+
+    bool hasScript = (codeWidget != 0);
+    if (findInScriptAction)
+        findInScriptAction->setEnabled(hasScript);
+    if (toggleBreakpointAction)
+        toggleBreakpointAction->setEnabled(hasScript);
+    if (goToLineAction)
+        goToLineAction->setEnabled(hasScript);
+}
+
+void QScriptDebuggerPrivate::sync()
+{
+    if (localsWidget) {
+        QScriptDebuggerJob *job = new SyncLocalsJob(this);
+        scheduleJob(job);
+    }
+    if (scriptsModel) {
+        QScriptDebuggerJob *job = new SyncScriptsJob(this);
+        scheduleJob(job);
+    }
+    if (stackModel) {
+        QScriptDebuggerJob *job = new SyncStackJob(this);
+        scheduleJob(job);
+    }
+    if (breakpointsModel) {
+        // need to sync because the ignore-count could have changed
+        QScriptDebuggerJob *job = new SyncBreakpointsJob(this);
+        scheduleJob(job);
+    }
+
+    if (stackWidget && (stackWidget->currentFrameIndex() != -1)) {
+        int index = stackWidget->currentFrameIndex();
+        loadLocals(index);
+        selectScriptForFrame(index);
+    } else if (codeWidget && (console->currentFrameIndex() != -1)) {
+        selectScriptForFrame(console->currentFrameIndex());
+    }
+}
+
+void QScriptDebuggerPrivate::loadLocals(int frameIndex)
+{
+    LoadLocalsJob *job = new LoadLocalsJob(this, frameIndex);
+    scheduleJob(job);
+}
+
+QScriptDebuggerLocalsModel *QScriptDebuggerPrivate::createLocalsModel()
+{
+    return new QScriptDebuggerLocalsModel(this, this, q_func());
+}
+
+namespace {
+
+class ShowFrameCodeJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    ShowFrameCodeJob(QScriptDebuggerPrivate *debugger, int frameIndex)
+        : QScriptDebuggerCommandSchedulerJob(debugger),
+          m_debugger(debugger), m_frameIndex(frameIndex) {}
+
+    void start()
+    {
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleGetContextInfo(m_frameIndex);
+    }
+    void handleResponse(const QScriptDebuggerResponse &response,
+                        int)
+    {
+        if (m_info.isNull()) {
+            m_info = response.resultAsContextInfo();
+            QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+            frontend.scheduleGetContextState(m_frameIndex);
+        } else {
+            int contextState = response.resultAsInt();
+            bool error = (contextState == QScriptContext::ExceptionState);
+            if (m_debugger->scriptsWidget) {
+                m_debugger->scriptsWidget->setCurrentScript(m_info.scriptId());
+            }
+            if (m_debugger->codeWidget) {
+                m_debugger->codeWidget->setCurrentScript(m_info.scriptId());
+                QScriptDebuggerCodeViewInterface *view = m_debugger->codeWidget->currentView();
+                if (view)
+                    view->setExecutionLineNumber(m_info.lineNumber(), error);
+            }
+            finish();
+        }
+    }
+
+private:
+    QScriptDebuggerPrivate *m_debugger;
+    int m_frameIndex;
+    QScriptContextInfo m_info;
+};
+
+} // namespace
+
+void QScriptDebuggerPrivate::selectScriptForFrame(int frameIndex)
+{
+    QScriptDebuggerJob *job = new ShowFrameCodeJob(this, frameIndex);
+    scheduleJob(job);
+}
+
+void QScriptDebuggerPrivate::emitStoppedSignal()
+{
+    emit q_func()->stopped();
+}
+
+/*!
+  Constructs a new QScriptDebugger object.
+*/
+QScriptDebugger::QScriptDebugger(QObject *parent)
+    : QObject(*new QScriptDebuggerPrivate, parent)
+{
+    ++scriptDebuggerCount;
+}
+
+/*!
+  Destroys this QScriptDebugger.
+*/
+QScriptDebugger::~QScriptDebugger()
+{
+    --scriptDebuggerCount;
+    if ((scriptDebuggerCount == 0) && eventCallbackRegistered) {
+        eventCallbackRegistered = false;
+        QInternal::unregisterCallback(QInternal::EventNotifyCallback,
+                                      scriptDebuggerEventCallback);
+    }
+}
+
+/*!
+  \internal
+*/
+QScriptDebugger::QScriptDebugger(QScriptDebuggerPrivate &dd, QObject *parent)
+    : QObject(dd, parent)
+{
+}
+
+QScriptDebuggerFrontend *QScriptDebugger::frontend() const
+{
+    Q_D(const QScriptDebugger);
+    return d->frontend;
+}
+
+void QScriptDebugger::setFrontend(QScriptDebuggerFrontend *frontend)
+{
+    Q_D(QScriptDebugger);
+    if (d->frontend)
+        d->frontend->setEventHandler(0);
+    d->frontend = frontend;
+    if (frontend) {
+        frontend->setEventHandler(d);
+        if (!eventCallbackRegistered) {
+            eventCallbackRegistered = true;
+            QInternal::registerCallback(QInternal::EventNotifyCallback,
+                                        scriptDebuggerEventCallback);
+        }
+    }
+}
+
+QAction *QScriptDebugger::action(DebuggerAction action, QObject *parent)
+{
+    switch (action) {
+    case InterruptAction:
+        return interruptAction(parent);
+    case ContinueAction:
+        return continueAction(parent);
+    case StepIntoAction:
+        return stepIntoAction(parent);
+    case StepOverAction:
+        return stepOverAction(parent);
+    case StepOutAction:
+        return stepOutAction(parent);
+    case RunToCursorAction:
+        return runToCursorAction(parent);
+    case RunToNewScriptAction:
+        return runToNewScriptAction(parent);
+    case ToggleBreakpointAction:
+        return toggleBreakpointAction(parent);
+    case ClearDebugOutputAction:
+        return clearDebugOutputAction(parent);
+    case ClearErrorLogAction:
+        return clearErrorLogAction(parent);
+    case ClearConsoleAction:
+        return clearConsoleAction(parent);
+    case FindInScriptAction:
+        return findInScriptAction(parent);
+    case FindNextInScriptAction:
+        return findNextInScriptAction(parent);
+    case FindPreviousInScriptAction:
+        return findPreviousInScriptAction(parent);
+    case GoToLineAction:
+        return goToLineAction(parent);
+    }
+    return 0;
+}
+
+QWidget *QScriptDebugger::widget(DebuggerWidget widget)
+{
+    switch (widget) {
+    case ConsoleWidget: {
+        QScriptDebuggerConsoleWidgetInterface *w = consoleWidget();
+        if (!w && widgetFactory()) {
+            w = widgetFactory()->createConsoleWidget();
+            setConsoleWidget(w);
+        }
+        return w;
+    }
+    case StackWidget: {
+        QScriptDebuggerStackWidgetInterface *w = stackWidget();
+        if (!w && widgetFactory()) {
+            w = widgetFactory()->createStackWidget();
+            setStackWidget(w);
+        }
+        return w;
+    }
+    case ScriptsWidget: {
+        QScriptDebuggerScriptsWidgetInterface *w = scriptsWidget();
+        if (!w && widgetFactory()) {
+            w = widgetFactory()->createScriptsWidget();
+            setScriptsWidget(w);
+        }
+        return w;
+    }
+    case LocalsWidget: {
+        QScriptDebuggerLocalsWidgetInterface *w = localsWidget();
+        if (!w && widgetFactory()) {
+            w = widgetFactory()->createLocalsWidget();
+            setLocalsWidget(w);
+        }
+        return w;
+    }
+    case CodeWidget: {
+        QScriptDebuggerCodeWidgetInterface *w = codeWidget();
+        if (!w && widgetFactory()) {
+            w = widgetFactory()->createCodeWidget();
+            setCodeWidget(w);
+        }
+        return w;
+    }
+    case CodeFinderWidget: {
+        QScriptDebuggerCodeFinderWidgetInterface *w = codeFinderWidget();
+        if (!w && widgetFactory()) {
+            w = widgetFactory()->createCodeFinderWidget();
+            setCodeFinderWidget(w);
+        }
+        return w;
+    }
+    case BreakpointsWidget: {
+        QScriptBreakpointsWidgetInterface *w = breakpointsWidget();
+        if (!w && widgetFactory()) {
+            w = widgetFactory()->createBreakpointsWidget();
+            setBreakpointsWidget(w);
+        }
+        return w;
+    }
+    case DebugOutputWidget: {
+        QScriptDebugOutputWidgetInterface *w = debugOutputWidget();
+        if (!w && widgetFactory()) {
+            w = widgetFactory()->createDebugOutputWidget();
+            setDebugOutputWidget(w);
+        }
+        return w;
+    }
+    case ErrorLogWidget: {
+        QScriptErrorLogWidgetInterface *w = errorLogWidget();
+        if (!w && widgetFactory()) {
+            w = widgetFactory()->createErrorLogWidget();
+            setErrorLogWidget(w);
+        }
+        return w;
+    }
+    }
+    return 0;
+}
+
+QScriptDebuggerConsoleWidgetInterface *QScriptDebugger::consoleWidget() const
+{
+    Q_D(const QScriptDebugger);
+    return d->consoleWidget;
+}
+
+void QScriptDebugger::setConsoleWidget(QScriptDebuggerConsoleWidgetInterface *consoleWidget)
+{
+    Q_D(QScriptDebugger);
+    if (d->consoleWidget) {
+        QObject::disconnect(d->consoleWidget, 0, this, 0);
+    }
+    d->consoleWidget = consoleWidget;
+    if (consoleWidget) {
+        consoleWidget->setCommandHistorian(d->console);
+        consoleWidget->setCompletionProvider(d);
+        QObject::connect(consoleWidget, SIGNAL(lineEntered(QString)),
+                         this, SLOT(_q_onLineEntered(QString)));
+
+        d->console->showDebuggerInfoMessage(consoleWidget);
+    }
+}
+
+QScriptDebuggerStackWidgetInterface *QScriptDebugger::stackWidget() const
+{
+    Q_D(const QScriptDebugger);
+    return d->stackWidget;
+}
+
+void QScriptDebugger::setStackWidget(QScriptDebuggerStackWidgetInterface *stackWidget)
+{
+    Q_D(QScriptDebugger);
+    if (d->stackWidget) {
+        QObject::disconnect(d->stackWidget, 0, this, 0);
+    }
+    d->stackWidget = stackWidget;
+    if (stackWidget) {
+        if (!d->stackModel) {
+            d->stackModel = new QScriptDebuggerStackModel(this);
+            if (d->interactive)
+                d->scheduleJob(new SyncStackJob(d));
+        }
+        stackWidget->setStackModel(d->stackModel);
+        QObject::connect(stackWidget, SIGNAL(currentFrameChanged(int)),
+                         this, SLOT(_q_onCurrentFrameChanged(int)));
+    }
+}
+
+QScriptDebuggerScriptsWidgetInterface *QScriptDebugger::scriptsWidget() const
+{
+    Q_D(const QScriptDebugger);
+    return d->scriptsWidget;
+}
+
+void QScriptDebugger::setScriptsWidget(QScriptDebuggerScriptsWidgetInterface *scriptsWidget)
+{
+    Q_D(QScriptDebugger);
+    if (d->scriptsWidget) {
+        QObject::disconnect(d->scriptsWidget, 0, this, 0);
+    }
+    d->scriptsWidget = scriptsWidget;
+    if (scriptsWidget) {
+        if (!d->scriptsModel) {
+            d->scriptsModel = new QScriptDebuggerScriptsModel(this);
+            if (d->interactive)
+                d->scheduleJob(new SyncScriptsJob(d));
+        }
+        scriptsWidget->setScriptsModel(d->scriptsModel);
+        QObject::connect(scriptsWidget, SIGNAL(currentScriptChanged(qint64)),
+                         this, SLOT(_q_onCurrentScriptChanged(qint64)));
+        QObject::connect(d->scriptsWidget, SIGNAL(scriptLocationSelected(int)),
+                         this, SLOT(_q_onScriptLocationSelected(int)));
+    }
+}
+
+QScriptDebuggerLocalsWidgetInterface *QScriptDebugger::localsWidget() const
+{
+    Q_D(const QScriptDebugger);
+    return d->localsWidget;
+}
+
+void QScriptDebugger::setLocalsWidget(QScriptDebuggerLocalsWidgetInterface *localsWidget)
+{
+    Q_D(QScriptDebugger);
+    if (d->localsWidget) {
+        // ### d->localsWidget->setLocalsModel(0);
+    }
+    localsWidget->setCompletionProvider(d);
+    d->localsWidget = localsWidget;
+}
+
+QScriptDebuggerCodeWidgetInterface *QScriptDebugger::codeWidget() const
+{
+    Q_D(const QScriptDebugger);
+    return d->codeWidget;
+}
+
+void QScriptDebugger::setCodeWidget(QScriptDebuggerCodeWidgetInterface *codeWidget)
+{
+    Q_D(QScriptDebugger);
+    if (d->codeWidget) {
+        d->codeWidget->removeEventFilter(this);
+    }
+    d->codeWidget = codeWidget;
+    if (codeWidget) {
+        if (!d->scriptsModel) {
+            d->scriptsModel = new QScriptDebuggerScriptsModel(this);
+            if (d->interactive)
+                d->scheduleJob(new SyncScriptsJob(d));
+        }
+        codeWidget->setScriptsModel(d->scriptsModel);
+        if (!d->breakpointsModel) {
+            d->breakpointsModel = new QScriptBreakpointsModel(d, d, this);
+            if (d->interactive)
+                d->scheduleJob(new SyncBreakpointsJob(d));
+        }
+        codeWidget->setBreakpointsModel(d->breakpointsModel);
+        codeWidget->setToolTipProvider(d);
+        codeWidget->installEventFilter(this);
+    }
+    bool hasScript = (codeWidget != 0) && (codeWidget->currentView() != 0);
+    if (d->findInScriptAction)
+        d->findInScriptAction->setEnabled(hasScript && (d->codeFinderWidget != 0));
+    if (d->goToLineAction)
+        d->goToLineAction->setEnabled(hasScript);
+    if (d->toggleBreakpointAction)
+        d->toggleBreakpointAction->setEnabled(hasScript);
+}
+
+QScriptDebuggerCodeFinderWidgetInterface *QScriptDebugger::codeFinderWidget() const
+{
+    Q_D(const QScriptDebugger);
+    return d->codeFinderWidget;
+}
+
+void QScriptDebugger::setCodeFinderWidget(QScriptDebuggerCodeFinderWidgetInterface *codeFinderWidget)
+{
+    Q_D(QScriptDebugger);
+    if (d->codeFinderWidget) {
+        QObject::disconnect(d->codeFinderWidget, 0, this, 0);
+    }
+    d->codeFinderWidget = codeFinderWidget;
+    if (codeFinderWidget) {
+        QObject::connect(codeFinderWidget, SIGNAL(findRequest(QString,int)),
+                         this, SLOT(_q_onFindCodeRequest(QString,int)));
+    }
+    if (d->findInScriptAction) {
+        d->findInScriptAction->setEnabled(
+            (codeFinderWidget != 0)
+            && (d->codeWidget != 0)
+            && (d->codeWidget->currentView() != 0));
+    }
+}
+
+QScriptDebugOutputWidgetInterface *QScriptDebugger::debugOutputWidget() const
+{
+    Q_D(const QScriptDebugger);
+    return d->debugOutputWidget;
+}
+
+void QScriptDebugger::setDebugOutputWidget(QScriptDebugOutputWidgetInterface *debugOutputWidget)
+{
+    Q_D(QScriptDebugger);
+    d->debugOutputWidget = debugOutputWidget;
+}
+
+QScriptBreakpointsWidgetInterface *QScriptDebugger::breakpointsWidget() const
+{
+    Q_D(const QScriptDebugger);
+    return d->breakpointsWidget;
+}
+
+void QScriptDebugger::setBreakpointsWidget(QScriptBreakpointsWidgetInterface *breakpointsWidget)
+{
+    Q_D(QScriptDebugger);
+    if (d->breakpointsWidget) {
+        // ### invalidate
+    }
+    d->breakpointsWidget = breakpointsWidget;
+    if (breakpointsWidget) {
+        if (!d->breakpointsModel) {
+            d->breakpointsModel = new QScriptBreakpointsModel(d, d, this);
+            if (d->interactive)
+                d->scheduleJob(new SyncBreakpointsJob(d));
+        }
+        d->breakpointsWidget->setBreakpointsModel(d->breakpointsModel);
+        d->breakpointsWidget->setScriptsModel(d->scriptsModel);
+    }
+}
+
+QScriptErrorLogWidgetInterface *QScriptDebugger::errorLogWidget() const
+{
+    Q_D(const QScriptDebugger);
+    return d->errorLogWidget;
+}
+
+void QScriptDebugger::setErrorLogWidget(QScriptErrorLogWidgetInterface *errorLogWidget)
+{
+    Q_D(QScriptDebugger);
+    d->errorLogWidget = errorLogWidget;
+}
+
+QScriptDebuggerWidgetFactoryInterface *QScriptDebugger::widgetFactory() const
+{
+    Q_D(const QScriptDebugger);
+    return d->widgetFactory;
+}
+
+void QScriptDebugger::setWidgetFactory(QScriptDebuggerWidgetFactoryInterface *factory)
+{
+    Q_D(QScriptDebugger);
+    d->widgetFactory = factory;
+}
+
+QAction *QScriptDebugger::interruptAction(QObject *parent) const
+{
+    Q_D(const QScriptDebugger);
+    if (!d->interruptAction) {
+        QIcon interruptIcon;
+        interruptIcon.addPixmap(d->pixmap(QString::fromLatin1("interrupt.png")), QIcon::Normal);
+        interruptIcon.addPixmap(d->pixmap(QString::fromLatin1("d_interrupt.png")), QIcon::Disabled);
+        QScriptDebugger *that = const_cast<QScriptDebugger*>(this);
+        that->d_func()->interruptAction = new QAction(interruptIcon, QScriptDebugger::tr("Interrupt"), parent);
+        d->interruptAction->setEnabled(!d->interactive);
+        d->interruptAction->setShortcut(QScriptDebugger::tr("Shift+F5"));
+        QObject::connect(d->interruptAction, SIGNAL(triggered()),
+                         that, SLOT(_q_interrupt()));
+    }
+    return d->interruptAction;
+}
+
+QAction *QScriptDebugger::continueAction(QObject *parent) const
+{
+    Q_D(const QScriptDebugger);
+    if (!d->continueAction) {
+        QIcon continueIcon;
+        continueIcon.addPixmap(d->pixmap(QString::fromLatin1("play.png")), QIcon::Normal);
+        continueIcon.addPixmap(d->pixmap(QString::fromLatin1("d_play.png")), QIcon::Disabled);
+        QScriptDebugger *that = const_cast<QScriptDebugger*>(this);
+        that->d_func()->continueAction = new QAction(continueIcon, QScriptDebugger::tr("Continue"), parent);
+        d->continueAction->setEnabled(d->interactive);
+        d->continueAction->setShortcut(QScriptDebugger::tr("F5"));
+        QObject::connect(d->continueAction, SIGNAL(triggered()),
+                         that, SLOT(_q_continue()));
+    }
+    return d->continueAction;
+}
+
+QAction *QScriptDebugger::stepIntoAction(QObject *parent) const
+{
+    Q_D(const QScriptDebugger);
+    if (!d->stepIntoAction) {
+        QIcon stepIntoIcon;
+        stepIntoIcon.addPixmap(d->pixmap(QString::fromLatin1("stepinto.png")), QIcon::Normal);
+        stepIntoIcon.addPixmap(d->pixmap(QString::fromLatin1("d_stepinto.png")), QIcon::Disabled);
+        QScriptDebugger *that = const_cast<QScriptDebugger*>(this);
+        that->d_func()->stepIntoAction = new QAction(stepIntoIcon, QScriptDebugger::tr("Step Into"), parent);
+        d->stepIntoAction->setEnabled(d->interactive);
+        d->stepIntoAction->setShortcut(QScriptDebugger::tr("F11"));
+        QObject::connect(d->stepIntoAction, SIGNAL(triggered()),
+                         that, SLOT(_q_stepInto()));
+    }
+    return d->stepIntoAction;
+}
+
+QAction *QScriptDebugger::stepOverAction(QObject *parent) const
+{
+    Q_D(const QScriptDebugger);
+    if (!d->stepOverAction) {
+        QIcon stepOverIcon;
+        stepOverIcon.addPixmap(d->pixmap(QString::fromLatin1("stepover.png")), QIcon::Normal);
+        stepOverIcon.addPixmap(d->pixmap(QString::fromLatin1("d_stepover.png")), QIcon::Disabled);
+        QScriptDebugger *that = const_cast<QScriptDebugger*>(this);
+        that->d_func()->stepOverAction = new QAction(stepOverIcon, QScriptDebugger::tr("Step Over"), parent);
+        d->stepOverAction->setEnabled(d->interactive);
+        d->stepOverAction->setShortcut(QScriptDebugger::tr("F10"));
+        QObject::connect(d->stepOverAction, SIGNAL(triggered()),
+                         that, SLOT(_q_stepOver()));
+    }
+    return d->stepOverAction;
+}
+
+QAction *QScriptDebugger::stepOutAction(QObject *parent) const
+{
+    Q_D(const QScriptDebugger);
+    if (!d->stepOutAction) {
+        QIcon stepOutIcon;
+        stepOutIcon.addPixmap(d->pixmap(QString::fromLatin1("stepout.png")), QIcon::Normal);
+        stepOutIcon.addPixmap(d->pixmap(QString::fromLatin1("d_stepout.png")), QIcon::Disabled);
+        QScriptDebugger *that = const_cast<QScriptDebugger*>(this);
+        that->d_func()->stepOutAction = new QAction(stepOutIcon, QScriptDebugger::tr("Step Out"), parent);
+        d->stepOutAction->setEnabled(d->interactive);
+        d->stepOutAction->setShortcut(QScriptDebugger::tr("Shift+F11"));
+        QObject::connect(d->stepOutAction, SIGNAL(triggered()),
+                         that, SLOT(_q_stepOut()));
+    }
+    return d->stepOutAction;
+}
+
+QAction *QScriptDebugger::runToCursorAction(QObject *parent) const
+{
+    Q_D(const QScriptDebugger);
+    if (!d->runToCursorAction) {
+        QIcon runToCursorIcon;
+        runToCursorIcon.addPixmap(d->pixmap(QString::fromLatin1("runtocursor.png")), QIcon::Normal);
+        runToCursorIcon.addPixmap(d->pixmap(QString::fromLatin1("d_runtocursor.png")), QIcon::Disabled);
+        QScriptDebugger *that = const_cast<QScriptDebugger*>(this);
+        that->d_func()->runToCursorAction = new QAction(runToCursorIcon, QScriptDebugger::tr("Run to Cursor"), parent);
+        d->runToCursorAction->setEnabled(d->interactive);
+        d->runToCursorAction->setShortcut(QScriptDebugger::tr("Ctrl+F10"));
+        QObject::connect(d->runToCursorAction, SIGNAL(triggered()),
+                         that, SLOT(_q_runToCursor()));
+    }
+    return d->runToCursorAction;
+}
+
+QAction *QScriptDebugger::runToNewScriptAction(QObject *parent) const
+{
+    Q_D(const QScriptDebugger);
+    if (!d->runToNewScriptAction) {
+        QIcon runToNewScriptIcon;
+        runToNewScriptIcon.addPixmap(d->pixmap(QString::fromLatin1("runtonewscript.png")), QIcon::Normal);
+        runToNewScriptIcon.addPixmap(d->pixmap(QString::fromLatin1("d_breakonscriptload.png")), QIcon::Disabled);
+        QScriptDebugger *that = const_cast<QScriptDebugger*>(this);
+        that->d_func()->runToNewScriptAction = new QAction(runToNewScriptIcon,
+                                                           QScriptDebugger::tr("Run to New Script"), parent);
+        d->runToNewScriptAction->setEnabled(d->interactive);
+        QObject::connect(d->runToNewScriptAction, SIGNAL(triggered()),
+                         that, SLOT(_q_runToNewScript()));
+    }
+    return d->runToNewScriptAction;
+}
+
+QAction *QScriptDebugger::toggleBreakpointAction(QObject *parent) const
+{
+    Q_D(const QScriptDebugger);
+    if (!d->toggleBreakpointAction) {
+        QIcon toggleBreakpointIcon;
+        QScriptDebugger *that = const_cast<QScriptDebugger*>(this);
+        that->d_func()->toggleBreakpointAction = new QAction(toggleBreakpointIcon,
+                                                             QScriptDebugger::tr("Toggle Breakpoint"), parent);
+        d->toggleBreakpointAction->setShortcut(QScriptDebugger::tr("F9"));
+        d->toggleBreakpointAction->setEnabled((d->codeWidget != 0) && (d->codeWidget->currentView() != 0));
+        QObject::connect(d->toggleBreakpointAction, SIGNAL(triggered()),
+                         that, SLOT(_q_toggleBreakpoint()));
+    }
+    return d->toggleBreakpointAction;
+}
+
+QAction *QScriptDebugger::clearDebugOutputAction(QObject *parent) const
+{
+    Q_D(const QScriptDebugger);
+    if (!d->clearDebugOutputAction) {
+        QIcon clearDebugOutputIcon;
+        QScriptDebugger *that = const_cast<QScriptDebugger*>(this);
+        that->d_func()->clearDebugOutputAction = new QAction(clearDebugOutputIcon, QScriptDebugger::tr("Clear Debug Output"), parent);
+        QObject::connect(d->clearDebugOutputAction, SIGNAL(triggered()),
+                         that, SLOT(_q_clearDebugOutput()));
+    }
+    return d->clearDebugOutputAction;
+}
+
+QAction *QScriptDebugger::clearErrorLogAction(QObject *parent) const
+{
+    Q_D(const QScriptDebugger);
+    if (!d->clearErrorLogAction) {
+        QIcon clearErrorLogIcon;
+        QScriptDebugger *that = const_cast<QScriptDebugger*>(this);
+        that->d_func()->clearErrorLogAction = new QAction(clearErrorLogIcon, QScriptDebugger::tr("Clear Error Log"), parent);
+        QObject::connect(d->clearErrorLogAction, SIGNAL(triggered()),
+                         that, SLOT(_q_clearErrorLog()));
+    }
+    return d->clearErrorLogAction;
+}
+
+QAction *QScriptDebugger::clearConsoleAction(QObject *parent) const
+{
+    Q_D(const QScriptDebugger);
+    if (!d->clearConsoleAction) {
+        QIcon clearConsoleIcon;
+        QScriptDebugger *that = const_cast<QScriptDebugger*>(this);
+        that->d_func()->clearConsoleAction = new QAction(clearConsoleIcon, QScriptDebugger::tr("Clear Console"), parent);
+        QObject::connect(d->clearConsoleAction, SIGNAL(triggered()),
+                         that, SLOT(_q_clearConsole()));
+    }
+    return d->clearConsoleAction;
+}
+
+QAction *QScriptDebugger::findInScriptAction(QObject *parent) const
+{
+    Q_D(const QScriptDebugger);
+    if (!d->findInScriptAction) {
+        QIcon findInScriptIcon;
+        findInScriptIcon.addPixmap(d->pixmap(QString::fromLatin1("find.png")), QIcon::Normal);
+        QScriptDebugger *that = const_cast<QScriptDebugger*>(this);
+        that->d_func()->findInScriptAction = new QAction(findInScriptIcon, QScriptDebugger::tr("&Find in Script..."), parent);
+        d->findInScriptAction->setShortcut(QScriptDebugger::tr("Ctrl+F"));
+        d->findInScriptAction->setEnabled(
+            (d->codeFinderWidget != 0)
+            && (d->codeWidget != 0)
+            && (d->codeWidget->currentView() != 0));
+        QObject::connect(d->findInScriptAction, SIGNAL(triggered()),
+                         that, SLOT(_q_findInScript()));
+    }
+    return d->findInScriptAction;
+}
+
+QAction *QScriptDebugger::findNextInScriptAction(QObject *parent) const
+{
+    Q_D(const QScriptDebugger);
+    if (!d->findNextInScriptAction) {
+        QIcon findNextInScriptIcon;
+        QScriptDebugger *that = const_cast<QScriptDebugger*>(this);
+        that->d_func()->findNextInScriptAction = new QAction(findNextInScriptIcon, QScriptDebugger::tr("Find &Next"), parent);
+        d->findNextInScriptAction->setEnabled(d->codeFinderWidget && !d->codeFinderWidget->text().isEmpty());
+        d->findNextInScriptAction->setShortcut(QScriptDebugger::tr("F3"));
+        QObject::connect(d->findNextInScriptAction, SIGNAL(triggered()),
+                         that, SLOT(_q_findNextInScript()));
+    }
+    return d->findNextInScriptAction;
+}
+
+QAction *QScriptDebugger::findPreviousInScriptAction(QObject *parent) const
+{
+    Q_D(const QScriptDebugger);
+    if (!d->findPreviousInScriptAction) {
+        QIcon findPreviousInScriptIcon;
+        QScriptDebugger *that = const_cast<QScriptDebugger*>(this);
+        that->d_func()->findPreviousInScriptAction = new QAction(findPreviousInScriptIcon, QScriptDebugger::tr("Find &Previous"), parent);
+        d->findPreviousInScriptAction->setEnabled(d->codeFinderWidget && !d->codeFinderWidget->text().isEmpty());
+        d->findPreviousInScriptAction->setShortcut(QScriptDebugger::tr("Shift+F3"));
+        QObject::connect(d->findPreviousInScriptAction, SIGNAL(triggered()),
+                         that, SLOT(_q_findPreviousInScript()));
+    }
+    return d->findPreviousInScriptAction;
+}
+
+QAction *QScriptDebugger::goToLineAction(QObject *parent) const
+{
+    Q_D(const QScriptDebugger);
+    if (!d->goToLineAction) {
+        QIcon goToLineIcon;
+        QScriptDebugger *that = const_cast<QScriptDebugger*>(this);
+        that->d_func()->goToLineAction = new QAction(goToLineIcon, QScriptDebugger::tr("Go to Line"), parent);
+        d->goToLineAction->setShortcut(QScriptDebugger::tr("Ctrl+G"));
+        d->goToLineAction->setEnabled((d->codeWidget != 0) && (d->codeWidget->currentView() != 0));
+        QObject::connect(d->goToLineAction, SIGNAL(triggered()),
+                         that, SLOT(_q_goToLine()));
+    }
+    return d->goToLineAction;
+}
+
+QMenu *QScriptDebugger::createStandardMenu(QWidget *widgetParent, QObject *actionParent)
+{
+    QMenu *menu = new QMenu(widgetParent);
+    menu->setTitle(QScriptDebugger::tr("Debug"));
+    menu->addAction(action(ContinueAction, actionParent));
+    menu->addAction(action(InterruptAction, actionParent));
+    menu->addAction(action(StepIntoAction, actionParent));
+    menu->addAction(action(StepOverAction, actionParent));
+    menu->addAction(action(StepOutAction, actionParent));
+    menu->addAction(action(RunToCursorAction, actionParent));
+    menu->addAction(action(RunToNewScriptAction, actionParent));
+
+    menu->addSeparator();
+    menu->addAction(action(ToggleBreakpointAction, actionParent));
+
+    menu->addSeparator();
+    menu->addAction(action(ClearDebugOutputAction, actionParent));
+    menu->addAction(action(ClearErrorLogAction, actionParent));
+    menu->addAction(action(ClearConsoleAction, actionParent));
+
+    return menu;
+}
+
+#ifndef QT_NO_TOOLBAR
+QToolBar *QScriptDebugger::createStandardToolBar(QWidget *widgetParent, QObject *actionParent)
+{
+    QToolBar *tb = new QToolBar(widgetParent);
+    tb->setObjectName(QLatin1String("qtscriptdebugger_standardToolBar"));
+    tb->addAction(action(ContinueAction, actionParent));
+    tb->addAction(action(InterruptAction, actionParent));
+    tb->addAction(action(StepIntoAction, actionParent));
+    tb->addAction(action(StepOverAction, actionParent));
+    tb->addAction(action(StepOutAction, actionParent));
+    tb->addAction(action(RunToCursorAction, actionParent));
+    tb->addAction(action(RunToNewScriptAction, actionParent));
+    tb->addSeparator();
+    tb->addAction(action(FindInScriptAction, actionParent));
+    return tb;
+}
+#endif
+
+bool QScriptDebugger::isInteractive() const
+{
+    Q_D(const QScriptDebugger);
+    return d->interactive;
+}
+
+/*!
+  \reimp
+*/
+bool QScriptDebugger::eventFilter(QObject *watched, QEvent *e)
+{
+    Q_D(QScriptDebugger);
+    if (watched == d->codeWidget) {
+        if (e->type() == QEvent::KeyPress) {
+            d->_q_findInScript();
+            d->codeFinderWidget->setText(static_cast<QKeyEvent*>(e)->text());
+            return true;
+        }
+    }
+    return false;
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebugger::timerEvent(QTimerEvent *e)
+{
+    Q_D(QScriptDebugger);
+    if (e->timerId() == d->updatesEnabledTimerId) {
+        killTimer(d->updatesEnabledTimerId);
+        d->updatesEnabledTimerId = -1;
+        if (d->stackWidget)
+            d->stackWidget->setUpdatesEnabled(true);
+        if (d->localsWidget)
+            d->localsWidget->setUpdatesEnabled(true);
+    } else {
+        QObject::timerEvent(e);
+    }
+}
+
+QT_END_NAMESPACE
+
+#include "moc_qscriptdebugger_p.cpp"
diff --git a/src/scripttools/debugging/qscriptdebugger_p.h b/src/scripttools/debugging/qscriptdebugger_p.h
new file mode 100644
index 0000000..0f74779
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebugger_p.h
@@ -0,0 +1,222 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGER_P_H
+#define QSCRIPTDEBUGGER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobject.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerFrontend;
+class QScriptDebuggerConsoleWidgetInterface;
+class QScriptDebuggerScriptsWidgetInterface;
+class QScriptDebuggerCodeWidgetInterface;
+class QScriptDebuggerCodeFinderWidgetInterface;
+class QScriptBreakpointsWidgetInterface;
+class QScriptDebuggerStackWidgetInterface;
+class QScriptDebuggerLocalsWidgetInterface;
+class QScriptDebugOutputWidgetInterface;
+class QScriptErrorLogWidgetInterface;
+class QScriptDebuggerWidgetFactoryInterface;
+class QAction;
+class QEvent;
+class QMenu;
+#ifndef QT_NO_TOOLBAR
+class QToolBar;
+#endif
+
+class QScriptDebuggerPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebugger : public QObject
+{
+    Q_OBJECT
+public:
+    // mirrors QScriptEngineDebugger::DebuggerWidget
+    enum DebuggerWidget {
+        ConsoleWidget,
+        StackWidget,
+        ScriptsWidget,
+        LocalsWidget,
+        CodeWidget,
+        CodeFinderWidget,
+        BreakpointsWidget,
+        DebugOutputWidget,
+        ErrorLogWidget
+    };
+    // mirrors QScriptEngineDebugger::DebuggerAction
+    enum DebuggerAction {
+        InterruptAction,
+        ContinueAction,
+        StepIntoAction,
+        StepOverAction,
+        StepOutAction,
+        RunToCursorAction,
+        RunToNewScriptAction,
+        ToggleBreakpointAction,
+        ClearDebugOutputAction,
+        ClearErrorLogAction,
+        ClearConsoleAction,
+        FindInScriptAction,
+        FindNextInScriptAction,
+        FindPreviousInScriptAction,
+        GoToLineAction
+    };
+
+    QScriptDebugger(QObject *parent = 0);
+    ~QScriptDebugger();
+
+    QScriptDebuggerFrontend *frontend() const;
+    void setFrontend(QScriptDebuggerFrontend *frontend);
+
+    QWidget *widget(DebuggerWidget widget);
+    QAction *action(DebuggerAction action, QObject *parent);
+
+    QScriptDebuggerConsoleWidgetInterface *consoleWidget() const;
+    void setConsoleWidget(QScriptDebuggerConsoleWidgetInterface *consoleWidget);
+
+    QScriptDebuggerScriptsWidgetInterface *scriptsWidget() const;
+    void setScriptsWidget(QScriptDebuggerScriptsWidgetInterface *scriptsWidget);
+
+    QScriptDebuggerCodeWidgetInterface *codeWidget() const;
+    void setCodeWidget(QScriptDebuggerCodeWidgetInterface *codeWidget);
+
+    QScriptDebuggerCodeFinderWidgetInterface *codeFinderWidget() const;
+    void setCodeFinderWidget(QScriptDebuggerCodeFinderWidgetInterface *codeFinderWidget);
+
+    QScriptDebuggerStackWidgetInterface *stackWidget() const;
+    void setStackWidget(QScriptDebuggerStackWidgetInterface *stackWidget);
+
+    QScriptDebuggerLocalsWidgetInterface *localsWidget() const;
+    void setLocalsWidget(QScriptDebuggerLocalsWidgetInterface *localsWidget);
+
+    QScriptBreakpointsWidgetInterface *breakpointsWidget() const;
+    void setBreakpointsWidget(QScriptBreakpointsWidgetInterface *breakpointsWidget);
+
+    QScriptDebugOutputWidgetInterface *debugOutputWidget() const;
+    void setDebugOutputWidget(QScriptDebugOutputWidgetInterface *debugOutputWidget);
+
+    QScriptErrorLogWidgetInterface *errorLogWidget() const;
+    void setErrorLogWidget(QScriptErrorLogWidgetInterface *errorLogWidget);
+
+    QScriptDebuggerWidgetFactoryInterface *widgetFactory() const;
+    void setWidgetFactory(QScriptDebuggerWidgetFactoryInterface *factory);
+
+    QAction *interruptAction(QObject *parent) const;
+    QAction *continueAction(QObject *parent) const;
+    QAction *stepIntoAction(QObject *parent) const;
+    QAction *stepOverAction(QObject *parent) const;
+    QAction *stepOutAction(QObject *parent) const;
+    QAction *runToCursorAction(QObject *parent) const;
+    QAction *runToNewScriptAction(QObject *parent) const;
+
+    QAction *toggleBreakpointAction(QObject *parent) const;
+
+    QAction *findInScriptAction(QObject *parent) const;
+    QAction *findNextInScriptAction(QObject *parent) const;
+    QAction *findPreviousInScriptAction(QObject *parent) const;
+    QAction *goToLineAction(QObject *parent) const;
+
+    QAction *clearDebugOutputAction(QObject *parent) const;
+    QAction *clearConsoleAction(QObject *parent) const;
+    QAction *clearErrorLogAction(QObject *parent) const;
+
+    QMenu *createStandardMenu(QWidget *widgetParent, QObject *actionParent);
+#ifndef QT_NO_TOOLBAR
+    QToolBar *createStandardToolBar(QWidget *widgetParent, QObject *actionParent);
+#endif
+    bool eventFilter(QObject *, QEvent *e);
+
+    bool isInteractive() const;
+
+Q_SIGNALS:
+    void stopped() const;
+    void started() const;
+
+protected:
+    void timerEvent(QTimerEvent *e);
+
+protected:
+    QScriptDebugger(QScriptDebuggerPrivate &dd, QObject *parent);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebugger)
+    Q_DISABLE_COPY(QScriptDebugger)
+
+    Q_PRIVATE_SLOT(d_func(), void _q_onLineEntered(const QString &))
+    Q_PRIVATE_SLOT(d_func(), void _q_onCurrentFrameChanged(int))
+    Q_PRIVATE_SLOT(d_func(), void _q_onCurrentScriptChanged(qint64))
+    Q_PRIVATE_SLOT(d_func(), void _q_onScriptLocationSelected(int))
+
+    Q_PRIVATE_SLOT(d_func(), void _q_interrupt())
+    Q_PRIVATE_SLOT(d_func(), void _q_continue())
+    Q_PRIVATE_SLOT(d_func(), void _q_stepInto())
+    Q_PRIVATE_SLOT(d_func(), void _q_stepOver())
+    Q_PRIVATE_SLOT(d_func(), void _q_stepOut())
+    Q_PRIVATE_SLOT(d_func(), void _q_runToCursor())
+    Q_PRIVATE_SLOT(d_func(), void _q_runToNewScript())
+
+    Q_PRIVATE_SLOT(d_func(), void _q_toggleBreakpoint())
+
+    Q_PRIVATE_SLOT(d_func(), void _q_clearDebugOutput())
+    Q_PRIVATE_SLOT(d_func(), void _q_clearErrorLog())
+    Q_PRIVATE_SLOT(d_func(), void _q_clearConsole())
+
+    Q_PRIVATE_SLOT(d_func(), void _q_findInScript())
+    Q_PRIVATE_SLOT(d_func(), void _q_findNextInScript())
+    Q_PRIVATE_SLOT(d_func(), void _q_findPreviousInScript())
+    Q_PRIVATE_SLOT(d_func(), void _q_onFindCodeRequest(const QString &, int))
+    Q_PRIVATE_SLOT(d_func(), void _q_goToLine())
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggeragent.cpp b/src/scripttools/debugging/qscriptdebuggeragent.cpp
new file mode 100644
index 0000000..7aa0d85
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggeragent.cpp
@@ -0,0 +1,730 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggeragent_p.h"
+#include "qscriptdebuggeragent_p_p.h"
+#include "qscriptdebuggerbackend_p_p.h"
+
+#include <QtCore/qcoreapplication.h>
+#include <QtCore/qset.h>
+#include <QtScript/qscriptengine.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \since 4.5
+  \class QScriptDebuggerAgent
+  \internal
+
+  This class implements a state machine that uses the low-level events
+  reported by the QScriptEngineAgent interface to implement debugging-
+  specific functionality such as stepping and breakpoints. It is used
+  internally by the QScriptDebuggerBackend class.
+*/
+
+QScriptDebuggerAgentPrivate::QScriptDebuggerAgentPrivate()
+    : state(NoState), stepDepth(0), stepCount(0),
+        targetScriptId(-1), targetLineNumber(-1), returnCounter(0),
+        nextBreakpointId(1), hitBreakpointId(0),
+        nextContextId(0), statementCounter(0)
+{
+}
+
+QScriptDebuggerAgentPrivate::~QScriptDebuggerAgentPrivate()
+{
+}
+
+QScriptDebuggerAgentPrivate *QScriptDebuggerAgentPrivate::get(
+    QScriptDebuggerAgent *q)
+{
+    if (!q)
+        return 0;
+    return q->d_func();
+}
+
+
+/*!
+  Constructs a new agent for the given \a engine. The agent will
+  report debugging-related events (e.g. step completion) to the given
+  \a backend.
+*/
+QScriptDebuggerAgent::QScriptDebuggerAgent(
+    QScriptDebuggerBackendPrivate *backend, QScriptEngine *engine)
+    : QScriptEngineAgent(engine), d_ptr(new QScriptDebuggerAgentPrivate())
+{
+    Q_D(QScriptDebuggerAgent);
+    d->backend = backend;
+
+    QScriptContext *ctx = engine->currentContext();
+    while (ctx) {
+        d->scriptIdStack.append(QList<qint64>());
+        d->contextIdStack.append(d->nextContextId);
+        ++d->nextContextId;
+        ctx = ctx->parentContext();
+    }
+}
+
+/*!
+  Destroys this QScriptDebuggerAgent.
+*/
+QScriptDebuggerAgent::~QScriptDebuggerAgent()
+{
+    Q_D(QScriptDebuggerAgent);
+    if (d->backend)
+        d->backend->agentDestroyed(this);
+    delete d;
+}
+
+/*!
+  Instructs the agent to perform a "step into" operation.  This
+  function returns immediately. The agent will report step completion
+  at a later time, i.e. when script statements are evaluated.
+*/
+void QScriptDebuggerAgent::enterStepIntoMode(int count)
+{
+    Q_D(QScriptDebuggerAgent);
+    d->state = QScriptDebuggerAgentPrivate::SteppingIntoState;
+    d->stepCount = count;
+    d->stepResult = QScriptValue();
+}
+
+/*!
+  Instructs the agent to perform a "step over" operation.  This
+  function returns immediately. The agent will report step completion
+  at a later time, i.e. when script statements are evaluated.
+*/
+void QScriptDebuggerAgent::enterStepOverMode(int count)
+{
+    Q_D(QScriptDebuggerAgent);
+    d->state = QScriptDebuggerAgentPrivate::SteppingOverState;
+    if (engine()->isEvaluating())
+        d->stepDepth = 0;
+    else
+        d->stepDepth = -1;
+    d->stepCount = count;
+    d->stepResult = QScriptValue();
+}
+
+/*!
+  Instructs the agent to perform a "step out" operation.  This
+  function returns immediately. The agent will report step completion
+  at a later time, i.e. when script statements are evaluated.
+*/
+void QScriptDebuggerAgent::enterStepOutMode()
+{
+    Q_D(QScriptDebuggerAgent);
+    d->state = QScriptDebuggerAgentPrivate::SteppingOutState;
+    if (engine()->isEvaluating())
+        d->stepDepth = 0;
+    else
+        d->stepDepth = -1;
+}
+
+/*!
+  Instructs the agent to continue evaluation.
+  This function returns immediately.
+*/
+void QScriptDebuggerAgent::enterContinueMode()
+{
+    Q_D(QScriptDebuggerAgent);
+    d->state = QScriptDebuggerAgentPrivate::NoState;
+}
+
+/*!
+  Instructs the agent to interrupt evaluation.
+  This function returns immediately.
+*/
+void QScriptDebuggerAgent::enterInterruptMode()
+{
+    Q_D(QScriptDebuggerAgent);
+    d->state = QScriptDebuggerAgentPrivate::InterruptingState;
+}
+
+/*!
+  Instructs the agent to continue evaluation until the location
+  described by \a fileName and \a lineNumber is reached.  This
+  function returns immediately.
+*/
+void QScriptDebuggerAgent::enterRunToLocationMode(const QString &fileName, int lineNumber)
+{
+    Q_D(QScriptDebuggerAgent);
+    d->targetFileName = fileName;
+    d->targetLineNumber = lineNumber;
+    d->targetScriptId = resolveScript(fileName);
+    d->state = QScriptDebuggerAgentPrivate::RunningToLocationState;
+}
+
+/*!
+  Instructs the agent to continue evaluation until the location
+  described by \a scriptId and \a lineNumber is reached.  This
+  function returns immediately.
+*/
+void QScriptDebuggerAgent::enterRunToLocationMode(qint64 scriptId, int lineNumber)
+{
+    Q_D(QScriptDebuggerAgent);
+    d->targetScriptId = scriptId;
+    d->targetFileName = QString();
+    d->targetLineNumber = lineNumber;
+    d->state = QScriptDebuggerAgentPrivate::RunningToLocationState;
+}
+
+void QScriptDebuggerAgent::enterReturnByForceMode(int contextIndex, const QScriptValue &value)
+{
+    Q_D(QScriptDebuggerAgent);
+    d->returnCounter = contextIndex + 1;
+    d->returnValue = QScriptValue();
+    d->state = QScriptDebuggerAgentPrivate::ReturningByForceState;
+    // throw an exception; we will catch it when the proper frame is popped
+    engine()->currentContext()->throwValue(value);
+}
+
+/*!
+  Sets a breakpoint defined by the given \a data.
+  Returns an integer that uniquely identifies the new breakpoint,
+  or -1 if setting the breakpoint failed.
+*/
+int QScriptDebuggerAgent::setBreakpoint(const QScriptBreakpointData &data)
+{
+    Q_D(QScriptDebuggerAgent);
+    qint64 scriptId = data.scriptId();
+    if (scriptId != -1) {
+        if (!d->scripts.contains(scriptId)) {
+            // that script has been unloaded, so invalidate the ID
+            scriptId = -1;
+            const_cast<QScriptBreakpointData&>(data).setScriptId(-1);
+        } else if (data.fileName().isEmpty()) {
+            QString fileName = d->scripts[scriptId].fileName();
+            const_cast<QScriptBreakpointData&>(data).setFileName(fileName);
+        }
+    }
+
+    int id = d->nextBreakpointId;
+    ++d->nextBreakpointId;
+
+    if (scriptId != -1) {
+        d->resolvedBreakpoints[scriptId].append(id);
+    } else {
+        QString fileName = data.fileName();
+        bool resolved = false;
+        QScriptScriptMap::const_iterator it;
+        for (it = d->scripts.constBegin(); it != d->scripts.constEnd(); ++it) {
+            if (it.value().fileName() == fileName) {
+                d->resolvedBreakpoints[it.key()].append(id);
+                resolved = true;
+                break;
+            }
+        }
+        if (!resolved)
+            d->unresolvedBreakpoints[fileName].append(id);
+    }
+
+    d->breakpoints.insert(id, data);
+
+    return id;
+}
+
+/*!
+  Deletes the breakpoint with the given \a id.
+  Returns true if the breakpoint was deleted, false if
+  no such breakpoint exists.
+*/
+bool QScriptDebuggerAgent::deleteBreakpoint(int id)
+{
+    Q_D(QScriptDebuggerAgent);
+    if (!d->breakpoints.contains(id))
+        return false;
+    d->breakpoints.remove(id);
+    bool found = false;
+    {
+        QHash<qint64, QList<int> >::iterator it;
+        it = d->resolvedBreakpoints.begin();
+        for ( ; !found && (it != d->resolvedBreakpoints.end()); ) {
+            QList<int> &lst = it.value();
+            Q_ASSERT(!lst.isEmpty());
+            for (int i = 0; i < lst.size(); ++i) {
+                if (lst.at(i) == id) {
+                    lst.removeAt(i);
+                    found = true;
+                    break;
+                }
+            }
+            if (lst.isEmpty())
+                it = d->resolvedBreakpoints.erase(it);
+            else
+                ++it;
+        }
+    }
+    if (!found) {
+        QHash<QString, QList<int> >::iterator it;
+        it = d->unresolvedBreakpoints.begin();
+        for ( ; !found && (it != d->unresolvedBreakpoints.end()); ) {
+            QList<int> &lst = it.value();
+            Q_ASSERT(!lst.isEmpty());
+            for (int i = 0; i < lst.size(); ++i) {
+                if (lst.at(i) == id) {
+                    lst.removeAt(i);
+                    found = true;
+                    break;
+                }
+            }
+            if (lst.isEmpty())
+                it = d->unresolvedBreakpoints.erase(it);
+            else
+                ++it;
+        }
+    }
+    return found;
+}
+
+/*!
+  Deletes all breakpoints.
+*/
+void QScriptDebuggerAgent::deleteAllBreakpoints()
+{
+    Q_D(QScriptDebuggerAgent);
+    d->breakpoints.clear();
+    d->resolvedBreakpoints.clear();
+    d->unresolvedBreakpoints.clear();
+}
+
+/*!
+  Returns the data associated with the breakpoint with the given \a
+  id.
+*/
+QScriptBreakpointData QScriptDebuggerAgent::breakpointData(int id) const
+{
+    Q_D(const QScriptDebuggerAgent);
+    return d->breakpoints.value(id);
+}
+
+/*!
+  Sets the data associated with the breakpoint with the given \a
+  id.
+*/
+bool QScriptDebuggerAgent::setBreakpointData(int id,
+                                             const QScriptBreakpointData &data)
+{
+    Q_D(QScriptDebuggerAgent);
+    if (!d->breakpoints.contains(id))
+        return false;
+    d->breakpoints[id] = data;
+    return true;
+}
+
+/*!
+  Returns all breakpoints.
+*/
+QScriptBreakpointMap QScriptDebuggerAgent::breakpoints() const
+{
+    Q_D(const QScriptDebuggerAgent);
+    return d->breakpoints;
+}
+
+/*!
+  Returns all scripts.
+*/
+QScriptScriptMap QScriptDebuggerAgent::scripts() const
+{
+    Q_D(const QScriptDebuggerAgent);
+    return d->scripts;
+}
+
+/*!
+  Returns the data associated with the script with the given \a id.
+*/
+QScriptScriptData QScriptDebuggerAgent::scriptData(qint64 id) const
+{
+    Q_D(const QScriptDebuggerAgent);
+    return d->scripts.value(id);
+}
+
+/*!
+  Checkpoints the current scripts.
+*/
+void QScriptDebuggerAgent::scriptsCheckpoint()
+{
+    Q_D(QScriptDebuggerAgent);
+    d->previousCheckpointScripts = d->checkpointScripts;
+    d->checkpointScripts = d->scripts;
+}
+
+/*!
+  Returns the difference between the current checkpoint and the
+  previous checkpoint. The first item in the pair is a list containing
+  the identifiers of the scripts that were added. The second item in
+  the pair is a list containing the identifiers of the scripts that
+  were removed.
+*/
+QPair<QList<qint64>, QList<qint64> > QScriptDebuggerAgent::scriptsDelta() const
+{
+    Q_D(const QScriptDebuggerAgent);
+    QSet<qint64> prevSet = d->previousCheckpointScripts.keys().toSet();
+    QSet<qint64> currSet = d->checkpointScripts.keys().toSet();
+    QSet<qint64> addedScriptIds = currSet - prevSet;
+    QSet<qint64> removedScriptIds = prevSet - currSet;
+    return qMakePair(addedScriptIds.toList(), removedScriptIds.toList());
+}
+
+/*!
+  Returns the identifier of the script that has the given \a fileName,
+  or -1 if there is no such script.
+*/
+qint64 QScriptDebuggerAgent::resolveScript(const QString &fileName) const
+{
+    Q_D(const QScriptDebuggerAgent);
+    QScriptScriptMap::const_iterator it;
+    for (it = d->scripts.constBegin(); it != d->scripts.constEnd(); ++it) {
+        if (it.value().fileName() == fileName)
+            return it.key();
+    }
+    return -1;
+}
+
+QList<qint64> QScriptDebuggerAgent::contextIds() const
+{
+    Q_D(const QScriptDebuggerAgent);
+    return d->contextIdStack;
+}
+
+QPair<QList<qint64>, QList<qint64> > QScriptDebuggerAgent::contextsCheckpoint()
+{
+    Q_D(QScriptDebuggerAgent);
+    int i = d->checkpointContextIdStack.size() - 1;
+    int j = d->contextIdStack.size() - 1;
+    for ( ; (i >= 0) && (j >= 0); --i, --j) {
+        if (d->checkpointContextIdStack.at(i) != d->contextIdStack.at(j))
+            break;
+    }
+    QList<qint64> removed = d->checkpointContextIdStack.mid(0, i+1);
+    QList<qint64> added = d->contextIdStack.mid(0, j+1);
+    d->checkpointContextIdStack = d->contextIdStack;
+    return qMakePair(removed, added);
+}
+
+void QScriptDebuggerAgent::nullifyBackendPointer()
+{
+    Q_D(QScriptDebuggerAgent);
+    d->backend = 0;
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerAgent::scriptLoad(qint64 id, const QString &program,
+                                      const QString &fileName, int baseLineNumber)
+{
+    Q_D(QScriptDebuggerAgent);
+    QScriptScriptData data = QScriptScriptData(program, fileName, baseLineNumber);
+    d->scripts.insert(id, data);
+
+    if ((d->state == QScriptDebuggerAgentPrivate::RunningToLocationState)
+        && (d->targetScriptId == -1)
+        && ((d->targetFileName == fileName) || d->targetFileName.isEmpty())) {
+        d->targetScriptId = id;
+    }
+
+    if (!fileName.isEmpty()) {
+        QList<int> lst = d->unresolvedBreakpoints.take(fileName);
+        if (!lst.isEmpty())
+            d->resolvedBreakpoints.insert(id, lst);
+    }
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerAgent::scriptUnload(qint64 id)
+{
+    Q_D(QScriptDebuggerAgent);
+    QScriptScriptData data = d->scripts.take(id);
+    QString fileName = data.fileName();
+
+    if ((d->state == QScriptDebuggerAgentPrivate::RunningToLocationState)
+        && (d->targetScriptId == id)) {
+        d->targetScriptId = -1;
+        d->targetFileName = fileName;
+    }
+
+    if (!fileName.isEmpty()) {
+        QList<int> lst = d->resolvedBreakpoints.take(id);
+        if (!lst.isEmpty())
+            d->unresolvedBreakpoints.insert(fileName, lst);
+    }
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerAgent::contextPush()
+{
+    Q_D(QScriptDebuggerAgent);
+    d->scriptIdStack.append(QList<qint64>());
+    d->contextIdStack.prepend(d->nextContextId);
+    ++d->nextContextId;
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerAgent::contextPop()
+{
+    Q_D(QScriptDebuggerAgent);
+    d->scriptIdStack.removeLast();
+    d->contextIdStack.removeFirst();
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerAgent::functionEntry(qint64 scriptId)
+{
+    Q_D(QScriptDebuggerAgent);
+    QList<qint64> &ids = d->scriptIdStack.last();
+    ids.append(scriptId);
+    if ((d->state == QScriptDebuggerAgentPrivate::SteppingOverState)
+        || (d->state == QScriptDebuggerAgentPrivate::SteppingOutState)) {
+        ++d->stepDepth;
+    }
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerAgent::functionExit(qint64 scriptId,
+                                        const QScriptValue &returnValue)
+{
+    Q_UNUSED(scriptId);
+    Q_D(QScriptDebuggerAgent);
+    QList<qint64> &ids = d->scriptIdStack.last();
+    ids.removeLast();
+    if (d->state == QScriptDebuggerAgentPrivate::SteppingOverState) {
+        --d->stepDepth;
+    } else if (d->state == QScriptDebuggerAgentPrivate::SteppingOutState) {
+        if (--d->stepDepth < 0) {
+            d->stepResult = returnValue;
+            d->state = QScriptDebuggerAgentPrivate::SteppedOutState;
+        }
+    } else if (d->state == QScriptDebuggerAgentPrivate::ReturningByForceState) {
+        if (--d->returnCounter == 0) {
+            d->returnValue = returnValue;
+            d->state = QScriptDebuggerAgentPrivate::ReturnedByForceState;
+            engine()->clearExceptions();
+        }
+    }
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerAgent::positionChange(qint64 scriptId,
+                                          int lineNumber, int columnNumber)
+{
+    Q_D(QScriptDebuggerAgent);
+    if (engine()->processEventsInterval() == -1) {
+        // see if it's time to call processEvents()
+        if ((++d->statementCounter % 25000) == 0) {
+            if (!d->processEventsTimer.isNull()) {
+                if (d->processEventsTimer.elapsed() > 30) {
+                    QCoreApplication::processEvents();
+                    d->processEventsTimer.restart();
+                }
+            } else {
+                d->processEventsTimer.start();
+            }
+        }
+    }
+
+    // check breakpoints
+    {
+        QList<int> lst = d->resolvedBreakpoints.value(scriptId);
+        for (int i = 0; i < lst.size(); ++i) {
+            int id = lst.at(i);
+            QScriptBreakpointData &data = d->breakpoints[id];
+            if (!data.isEnabled())
+                continue;
+            if (data.lineNumber() != lineNumber)
+                continue;
+            if (!data.condition().isEmpty()) {
+                // ### careful, evaluate() can cause an exception
+                // ### disable callbacks in nested evaluate?
+                QScriptDebuggerAgentPrivate::State was = d->state;
+                d->state = QScriptDebuggerAgentPrivate::NoState;
+                QScriptValue ret = engine()->evaluate(
+                    data.condition(),
+                    QString::fromLatin1("Breakpoint %0 condition checker").arg(id));
+                if (!ret.isError())
+                    d->state = was;
+                if (!ret.toBoolean())
+                    continue;
+            }
+            if (!data.hit())
+                continue;
+            d->hitBreakpointId = id;
+            d->state = QScriptDebuggerAgentPrivate::BreakpointState;
+        }
+    }
+
+    switch (d->state) {
+    case QScriptDebuggerAgentPrivate::NoState:
+    case QScriptDebuggerAgentPrivate::SteppingOutState:
+    case QScriptDebuggerAgentPrivate::ReturningByForceState:
+        // Do nothing
+        break;
+
+    case QScriptDebuggerAgentPrivate::SteppingIntoState:
+        if (--d->stepCount == 0) {
+            d->state = QScriptDebuggerAgentPrivate::NoState;
+            if (d->backend)
+                d->backend->stepped(scriptId, lineNumber, columnNumber, QScriptValue());
+        }
+        break;
+
+    case QScriptDebuggerAgentPrivate::SteppingOverState:
+        if ((d->stepDepth > 0) || (--d->stepCount != 0))
+            break;
+        // fallthrough
+    case QScriptDebuggerAgentPrivate::SteppedOverState:
+        d->state = QScriptDebuggerAgentPrivate::NoState;
+        if (d->backend)
+            d->backend->stepped(scriptId, lineNumber, columnNumber, d->stepResult);
+        break;
+
+    case QScriptDebuggerAgentPrivate::SteppedOutState:
+        d->state = QScriptDebuggerAgentPrivate::NoState;
+        if (d->backend)
+            d->backend->stepped(scriptId, lineNumber, columnNumber, d->stepResult);
+        break;
+
+    case QScriptDebuggerAgentPrivate::RunningToLocationState:
+        if (((lineNumber == d->targetLineNumber) || (d->targetLineNumber == -1))
+            && (scriptId == d->targetScriptId)) {
+            d->state = QScriptDebuggerAgentPrivate::NoState;
+            if (d->backend)
+                d->backend->locationReached(scriptId, lineNumber, columnNumber);
+        }
+        break;
+
+    case QScriptDebuggerAgentPrivate::InterruptingState:
+        d->state = QScriptDebuggerAgentPrivate::NoState;
+        if (d->backend)
+            d->backend->interrupted(scriptId, lineNumber, columnNumber);
+        break;
+
+    case QScriptDebuggerAgentPrivate::BreakpointState:
+        d->state = QScriptDebuggerAgentPrivate::NoState;
+        if (d->backend)
+            d->backend->breakpoint(scriptId, lineNumber, columnNumber, d->hitBreakpointId);
+        if (d->breakpoints.value(d->hitBreakpointId).isSingleShot())
+            deleteBreakpoint(d->hitBreakpointId);
+        break;
+
+    case QScriptDebuggerAgentPrivate::ReturnedByForceState:
+        d->state = QScriptDebuggerAgentPrivate::NoState;
+        if (d->backend)
+            d->backend->forcedReturn(scriptId, lineNumber, columnNumber, d->returnValue);
+        break;
+
+    case QScriptDebuggerAgentPrivate::SteppedIntoState:
+    case QScriptDebuggerAgentPrivate::ReachedLocationState:
+    case QScriptDebuggerAgentPrivate::InterruptedState:
+// ### deal with the case when code is evaluated while we're already paused
+//        Q_ASSERT(false);
+        break;
+    }
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerAgent::exceptionThrow(qint64 scriptId,
+                                          const QScriptValue &exception,
+                                          bool hasHandler)
+{
+    Q_D(QScriptDebuggerAgent);
+    if (d->state == QScriptDebuggerAgentPrivate::ReturningByForceState) {
+        // we threw this exception ourselves, so ignore it for now
+        // (see functionExit()).
+        return;
+    }
+    if (d->backend)
+        d->backend->exception(scriptId, exception, hasHandler);
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerAgent::exceptionCatch(qint64 scriptId,
+                                          const QScriptValue &exception)
+{
+    Q_UNUSED(scriptId);
+    Q_UNUSED(exception);
+}
+
+/*!
+  \reimp
+*/
+bool QScriptDebuggerAgent::supportsExtension(Extension extension) const
+{
+    return (extension == DebuggerInvocationRequest);
+}
+
+/*!
+  \reimp
+*/
+QVariant QScriptDebuggerAgent::extension(Extension extension,
+                                         const QVariant &argument)
+{
+    Q_UNUSED(extension);
+    Q_D(QScriptDebuggerAgent);
+    Q_ASSERT(extension == DebuggerInvocationRequest);
+    QVariantList lst = argument.toList();
+    qint64 scriptId = lst.at(0).toLongLong();
+    int lineNumber = lst.at(1).toInt();
+    int columnNumber = lst.at(2).toInt();
+    d->state = QScriptDebuggerAgentPrivate::NoState;
+    if (d->backend) {
+        d->backend->debuggerInvocationRequest(
+            scriptId, lineNumber, columnNumber);
+    }
+    return QVariant();
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggeragent_p.h b/src/scripttools/debugging/qscriptdebuggeragent_p.h
new file mode 100644
index 0000000..4e0448e
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggeragent_p.h
@@ -0,0 +1,135 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERAGENT_P_H
+#define QSCRIPTDEBUGGERAGENT_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtScript/qscriptengineagent.h>
+
+#include <QtCore/qpair.h>
+
+#include "qscriptbreakpointdata_p.h"
+#include "qscriptscriptdata_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerBackendPrivate;
+
+class QScriptDebuggerAgentPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerAgent : public QScriptEngineAgent
+{
+public:
+    QScriptDebuggerAgent(QScriptDebuggerBackendPrivate *backend,
+                         QScriptEngine *engine);
+    ~QScriptDebuggerAgent();
+
+    void enterStepIntoMode(int count = 1);
+    void enterStepOverMode(int count = 1);
+    void enterStepOutMode();
+    void enterContinueMode();
+    void enterInterruptMode();
+    void enterRunToLocationMode(const QString &fileName, int lineNumber);
+    void enterRunToLocationMode(qint64 scriptId, int lineNumber);
+    void enterReturnByForceMode(int contextIndex, const QScriptValue &value);
+
+    int setBreakpoint(const QScriptBreakpointData &data);
+    bool deleteBreakpoint(int id);
+    void deleteAllBreakpoints();
+    QScriptBreakpointData breakpointData(int id) const;
+    bool setBreakpointData(int id, const QScriptBreakpointData &data);
+    QScriptBreakpointMap breakpoints() const;
+
+    QScriptScriptMap scripts() const;
+    QScriptScriptData scriptData(qint64 id) const;
+    void scriptsCheckpoint();
+    QPair<QList<qint64>, QList<qint64> > scriptsDelta() const;
+    qint64 resolveScript(const QString &fileName) const;
+
+    QList<qint64> contextIds() const;
+    QPair<QList<qint64>, QList<qint64> > contextsCheckpoint();
+
+    void nullifyBackendPointer();
+
+    // reimplemented
+    void scriptLoad(qint64 id, const QString &program,
+                    const QString &fileName, int baseLineNumber);
+    void scriptUnload(qint64 id);
+
+    void contextPush();
+    void contextPop();
+
+    void functionEntry(qint64 scriptId);
+    void functionExit(qint64 scriptId,
+                      const QScriptValue &returnValue);
+
+    void positionChange(qint64 scriptId,
+                        int lineNumber, int columnNumber);
+
+    void exceptionThrow(qint64 scriptId,
+                        const QScriptValue &exception,
+                        bool hasHandler);
+    void exceptionCatch(qint64 scriptId,
+                        const QScriptValue &exception);
+
+    bool supportsExtension(Extension extension) const;
+    QVariant extension(Extension extension,
+                       const QVariant &argument = QVariant());
+
+private:
+    QScriptDebuggerAgentPrivate *d_ptr;
+    Q_DECLARE_PRIVATE(QScriptDebuggerAgent)
+    Q_DISABLE_COPY(QScriptDebuggerAgent)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggeragent_p_p.h b/src/scripttools/debugging/qscriptdebuggeragent_p_p.h
new file mode 100644
index 0000000..38fae8c
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggeragent_p_p.h
@@ -0,0 +1,126 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERAGENT_P_P_H
+#define QSCRIPTDEBUGGERAGENT_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtScript/qscriptvalue.h>
+#include <QtCore/qdatetime.h>
+#include <QtCore/qhash.h>
+#include <QtCore/qmap.h>
+#include <QtCore/qlist.h>
+
+#include "qscriptscriptdata_p.h"
+#include "qscriptbreakpointdata_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerAgent;
+class QScriptDebuggerAgentPrivate
+{
+public:
+    enum State {
+        NoState,
+        SteppingIntoState,
+        SteppedIntoState,
+        SteppingOverState,
+        SteppedOverState,
+        SteppingOutState,
+        SteppedOutState,
+        RunningToLocationState,
+        ReachedLocationState,
+        InterruptingState,
+        InterruptedState,
+        BreakpointState,
+        ReturningByForceState,
+        ReturnedByForceState
+    };
+
+    QScriptDebuggerAgentPrivate();
+    ~QScriptDebuggerAgentPrivate();
+
+    static QScriptDebuggerAgentPrivate *get(QScriptDebuggerAgent *);
+
+    State state;
+    int stepDepth;
+    int stepCount;
+    int targetScriptId;
+    QString targetFileName;
+    int targetLineNumber;
+    QScriptValue stepResult;
+    int returnCounter;
+    QScriptValue returnValue;
+
+    int nextBreakpointId;
+    QHash<qint64, QList<int> > resolvedBreakpoints;
+    QHash<QString, QList<int> > unresolvedBreakpoints;
+    QScriptBreakpointMap breakpoints;
+    int hitBreakpointId;
+
+    QScriptScriptMap scripts;
+    QScriptScriptMap checkpointScripts;
+    QScriptScriptMap previousCheckpointScripts;
+    QList<QList<qint64> > scriptIdStack;
+
+    QList<qint64> contextIdStack;
+    QList<qint64> checkpointContextIdStack;
+    qint64 nextContextId;
+
+    QTime processEventsTimer;
+    int statementCounter;
+
+    QScriptDebuggerBackendPrivate *backend;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerbackend.cpp b/src/scripttools/debugging/qscriptdebuggerbackend.cpp
new file mode 100644
index 0000000..8e739af
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerbackend.cpp
@@ -0,0 +1,993 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerbackend_p.h"
+#include "qscriptdebuggerbackend_p_p.h"
+#include "qscriptdebuggeragent_p.h"
+#include "qscriptdebuggercommandexecutor_p.h"
+#include "qscriptdebuggerevent_p.h"
+#include "qscriptdebuggervalue_p.h"
+#include "qscriptscriptdata_p.h"
+#include "qscriptbreakpointdata_p.h"
+#include "qscriptobjectsnapshot_p.h"
+
+#include <QtScript/qscriptengine.h>
+#include <QtScript/qscriptcontextinfo.h>
+#include <QtScript/qscriptvalueiterator.h>
+
+#include <QtCore/qcoreapplication.h>
+#include <QtCore/qdebug.h>
+
+Q_DECLARE_METATYPE(QScriptDebuggerValue)
+Q_DECLARE_METATYPE(QScriptDebuggerBackendPrivate*)
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \since 4.5
+  \class QScriptDebuggerBackend
+  \internal
+
+  \brief The QScriptDebuggerBackend class is the base class of debugger back-ends.
+
+  QScriptDebuggerBackend builds on the QScriptDebuggerAgent class.
+
+  This class is usually used together with the QScriptDebuggerFrontend
+  class, in order to form a (front-end, back-end) pair.
+
+  Call attachTo() to attach to a QScriptEngine object. Call detach()
+  to detach from the current engine.
+
+  Call stepInto() to step into the next script statement; call stepOver()
+  to step over the next script statement; and call stepOut() to step out
+  of the currently executing script function. An event() will be generated
+  when the stepping is completed.
+
+  Call runToLocation() to execute script statements until a certain
+  location has been reached. An event() will be generated when the location
+  has been reached.
+
+  Call interruptEvaluation() to request that evaluation should be
+  interrupted. An event() will be generated upon the next script
+  statement that is reached.
+
+  Call continueEvalution() to allow script evaluation to continue.
+
+  Call setBreakpoint() to set a breakpoint. A breakpoint event() will
+  be generated when a breakpoint is hit. Call deleteBreakpoint() to
+  delete a breakpoint. Call modifyBreakpoint() to change the state of
+  an existing breakpoint.
+
+  Call contextCount() to obtain the number of active contexts
+  (frames). Call context() to obtain a pointer to a QScriptContext.
+
+  \section1 Subclassing
+
+  When subclassing QScriptDebuggerBackend, you must implement the pure
+  virtual event() function. This function typically forwards the event
+  to a QScriptDebuggerFrontend object. For most type of events,
+  event() should block until the back-end is instructed to resume
+  execution (e.g. until continueEvalution() is called). You must
+  implement resume(), which is responsible for making event() return.
+
+  \sa QScriptDebuggerFrontend, QScriptDebuggerEvent
+*/
+
+// helper class that's used to handle our custom Qt events
+class QScriptDebuggerBackendEventReceiver : public QObject
+{
+public:
+    QScriptDebuggerBackendEventReceiver(QScriptDebuggerBackendPrivate *backend,
+                                        QObject *parent = 0)
+        : QObject(parent), m_backend(backend) {}
+    ~QScriptDebuggerBackendEventReceiver() {}
+
+    bool event(QEvent *e)
+    {
+        return m_backend->event(e);
+    }
+
+private:
+    QScriptDebuggerBackendPrivate *m_backend;
+};
+
+
+QScriptDebuggerBackendPrivate::QScriptDebuggerBackendPrivate()
+    : agent(0), commandExecutor(0),
+        pendingEvaluateContextIndex(-1), pendingEvaluateLineNumber(-1),
+        ignoreExceptions(false),
+        nextScriptValueIteratorId(0), nextScriptObjectSnapshotId(0),
+        eventReceiver(0),
+        q_ptr(0) // q_ptr will be set later by QScriptDebuggerBackend constructor
+{
+}
+
+QScriptDebuggerBackendPrivate::~QScriptDebuggerBackendPrivate()
+{
+    if (agent)
+        agent->nullifyBackendPointer();
+    delete commandExecutor;
+    delete eventReceiver;
+    qDeleteAll(scriptValueIterators);
+    qDeleteAll(scriptObjectSnapshots);
+}
+
+void QScriptDebuggerBackendPrivate::postEvent(QEvent *e)
+{
+    if (!eventReceiver) {
+        eventReceiver = new QScriptDebuggerBackendEventReceiver(this);
+        eventReceiver->moveToThread(agent->engine()->thread());
+    }
+    QCoreApplication::postEvent(eventReceiver, e);
+}
+
+bool QScriptDebuggerBackendPrivate::event(QEvent *e)
+{
+    if (e->type() == QEvent::User+1) {
+        QScriptDebuggerEventEvent *de = static_cast<QScriptDebuggerEventEvent*>(e);
+        q_func()->event(de->event());
+        return true;
+    }
+    return false;
+}
+
+void QScriptDebuggerBackendPrivate::agentDestroyed(QScriptDebuggerAgent *ag)
+{
+    // Since agents are owned by the script engine, this in practice means
+    // that the engine has been destroyed. Invalidate our pointer so we
+    // don't crash later.
+    if (agent == ag)
+        agent = 0;
+}
+
+/*!
+  The agent calls this function when it has completed a step
+  operation.
+*/
+void QScriptDebuggerBackendPrivate::stepped(qint64 scriptId,
+                                            int lineNumber,
+                                            int columnNumber,
+                                            const QScriptValue &result)
+{
+    Q_Q(QScriptDebuggerBackend);
+    QScriptDebuggerEvent e(QScriptDebuggerEvent::SteppingFinished,
+                           scriptId, lineNumber, columnNumber);
+    e.setFileName(agent->scriptData(scriptId).fileName());
+    QScriptDebuggerValue value(result);
+    e.setScriptValue(value);
+    if (!result.isUndefined())
+        e.setMessage(result.toString()); // for convenience -- we always need it
+    q->event(e);
+}
+
+/*!
+  The agent calls this function when it has run to a particular
+  location.
+*/
+void QScriptDebuggerBackendPrivate::locationReached(qint64 scriptId,
+                                                    int lineNumber,
+                                                    int columnNumber)
+{
+    Q_Q(QScriptDebuggerBackend);
+    QScriptDebuggerEvent e(QScriptDebuggerEvent::LocationReached,
+                           scriptId, lineNumber, columnNumber);
+    e.setFileName(agent->scriptData(scriptId).fileName());
+    q->event(e);
+}
+
+/*!
+  The agent calls this function when evaluation has been interrupted.
+*/
+void QScriptDebuggerBackendPrivate::interrupted(qint64 scriptId,
+                                                int lineNumber,
+                                                int columnNumber)
+{
+    Q_Q(QScriptDebuggerBackend);
+    QScriptDebuggerEvent e(QScriptDebuggerEvent::Interrupted,
+                           scriptId, lineNumber, columnNumber);
+    e.setFileName(agent->scriptData(scriptId).fileName());
+    q->event(e);
+}
+
+/*!
+  The agent calls this function when a breakpoint has been triggered.
+*/
+void QScriptDebuggerBackendPrivate::breakpoint(qint64 scriptId,
+                                               int lineNumber,
+                                               int columnNumber,
+                                               int breakpointId)
+{
+    Q_Q(QScriptDebuggerBackend);
+    QScriptDebuggerEvent e(QScriptDebuggerEvent::Breakpoint,
+                           scriptId, lineNumber, columnNumber);
+    e.setFileName(agent->scriptData(scriptId).fileName());
+    e.setBreakpointId(breakpointId);
+    q->event(e);
+}
+
+/*!
+  The agent calls this function when an uncaught exception has
+  occurred.
+*/
+void QScriptDebuggerBackendPrivate::exception(qint64 scriptId,
+                                              const QScriptValue &exception,
+                                              bool hasHandler)
+{
+    Q_Q(QScriptDebuggerBackend);
+    if (ignoreExceptions) {
+        // don't care (it's caught by us)
+        return;
+    }
+    QScriptDebuggerEvent e(QScriptDebuggerEvent::Exception);
+    e.setScriptId(scriptId);
+    e.setFileName(agent->scriptData(scriptId).fileName());
+    e.setMessage(exception.toString());
+    e.setHasExceptionHandler(hasHandler);
+    int lineNumber = -1;
+    QString fileName;
+    if (exception.property(QLatin1String("lineNumber")).isNumber())
+        lineNumber = exception.property(QLatin1String("lineNumber")).toInt32();
+    if (exception.property(QLatin1String("fileName")).isString())
+        fileName = exception.property(QLatin1String("fileName")).toString();
+    if (lineNumber == -1) {
+        QScriptContextInfo info(q->engine()->currentContext());
+        lineNumber = info.lineNumber();
+        fileName = info.fileName();
+    }
+    if (lineNumber != -1)
+        e.setLineNumber(lineNumber);
+    if (!fileName.isEmpty())
+        e.setFileName(fileName);
+    QScriptDebuggerValue value(exception);
+    e.setScriptValue(value);
+    q->event(e);
+}
+
+QScriptValue QScriptDebuggerBackendPrivate::trace(QScriptContext *context,
+                                                  QScriptEngine *engine)
+{
+    QScriptValue data = context->callee().data();
+    QScriptDebuggerBackendPrivate *self = qscriptvalue_cast<QScriptDebuggerBackendPrivate*>(data);
+    if (!self)
+        return engine->undefinedValue();
+    QString str;
+    for (int i = 0; i < context->argumentCount(); ++i) {
+        if (i > 0)
+            str.append(QLatin1Char(' '));
+        str.append(context->argument(i).toString());
+    }
+    QScriptDebuggerEvent e(QScriptDebuggerEvent::Trace);
+    e.setMessage(str);
+    self->q_func()->event(e);
+    return engine->undefinedValue();
+}
+
+QScriptValue QScriptDebuggerBackendPrivate::qsassert(QScriptContext *context,
+                                                     QScriptEngine *engine)
+{
+    QScriptValue arg = context->argument(0);
+    if (arg.toBoolean())
+        return arg;
+    QScriptContextInfo info(context->parentContext());
+    QString msg;
+    QString fileName = info.fileName();
+    if (fileName.isEmpty())
+        fileName = QString::fromLatin1("<anonymous script, id=%0>").arg(info.scriptId());
+    msg.append(fileName);
+    msg.append(QLatin1Char(':'));
+    msg.append(QString::number(info.lineNumber()));
+    msg.append(QString::fromLatin1(": Assertion failed"));
+    for (int i = 1; i < context->argumentCount(); ++i) {
+        if (i == 1)
+            msg.append(QLatin1Char(':'));
+        msg.append(QLatin1Char(' '));
+        msg.append(context->argument(i).toString());
+    }
+    QScriptValue err = context->throwError(msg);
+    err.setProperty(QString::fromLatin1("name"), QScriptValue(engine, QString::fromLatin1("AssertionError")));
+    return err;
+}
+
+QScriptValue QScriptDebuggerBackendPrivate::fileName(QScriptContext *context,
+                                                     QScriptEngine *engine)
+{
+    QScriptContextInfo info(context->parentContext());
+    QString fn = info.fileName();
+    if (fn.isEmpty())
+        return engine->undefinedValue();
+    return QScriptValue(engine, fn);
+}
+
+QScriptValue QScriptDebuggerBackendPrivate::lineNumber(QScriptContext *context,
+                                                       QScriptEngine *engine)
+{
+    QScriptContextInfo info(context->parentContext());
+    return QScriptValue(engine, info.lineNumber());
+}
+
+/*!
+  The agent calls this function when the engine has reached a
+  "debugger" statement.
+*/
+void QScriptDebuggerBackendPrivate::debuggerInvocationRequest(
+    qint64 scriptId, int lineNumber, int columnNumber)
+{
+    Q_Q(QScriptDebuggerBackend);
+    QScriptDebuggerEvent e(QScriptDebuggerEvent::DebuggerInvocationRequest,
+                           scriptId, lineNumber, columnNumber);
+    e.setFileName(agent->scriptData(scriptId).fileName());
+    q->event(e);
+}
+
+void QScriptDebuggerBackendPrivate::forcedReturn(
+    qint64 scriptId, int lineNumber, int columnNumber,
+    const QScriptValue &value)
+{
+    Q_Q(QScriptDebuggerBackend);
+    QScriptDebuggerEvent e(QScriptDebuggerEvent::ForcedReturn,
+                           scriptId, lineNumber, columnNumber);
+    e.setFileName(agent->scriptData(scriptId).fileName());
+    e.setScriptValue(QScriptDebuggerValue(value));
+    q->event(e);
+}
+
+/*!
+  Creates a QScriptDebuggerBackend object.
+*/
+QScriptDebuggerBackend::QScriptDebuggerBackend()
+    : d_ptr(new QScriptDebuggerBackendPrivate)
+{
+    d_ptr->q_ptr = this;
+}
+
+/*!
+  Destroys this QScriptDebuggerBackend.
+*/
+QScriptDebuggerBackend::~QScriptDebuggerBackend()
+{
+    detach();
+}
+
+/*!
+  \internal
+*/
+QScriptDebuggerBackend::QScriptDebuggerBackend(QScriptDebuggerBackendPrivate &dd)
+    : d_ptr(&dd)
+{
+    d_ptr->q_ptr = this;
+}
+
+/*!
+  Attaches this backend to the given \a engine.
+  The backend automatically detaches from the old engine, if any.
+
+  This function installs its own agent on the \a engine using
+  QScriptEngine::setAgent(); any existing agent will be replaced.
+
+  \sa detach(). engine()
+*/
+void QScriptDebuggerBackend::attachTo(QScriptEngine *engine)
+{
+    Q_D(QScriptDebuggerBackend);
+    detach();
+    d->agent = new QScriptDebuggerAgent(d, engine);
+    QScriptValue global = engine->globalObject();
+    d->origTraceFunction = global.property(QString::fromLatin1("print"));
+    global.setProperty(QString::fromLatin1("print"), traceFunction());
+//    global.setProperty(QString::fromLatin1("qAssert"), assertFunction());
+    d->origFileNameFunction = global.property(QString::fromLatin1("__FILE__"));
+    global.setProperty(QString::fromLatin1("__FILE__"), fileNameFunction(),
+                       QScriptValue::PropertyGetter | QScriptValue::ReadOnly);
+    d->origLineNumberFunction = global.property(QString::fromLatin1("__LINE__"));
+    global.setProperty(QString::fromLatin1("__LINE__"), lineNumberFunction(),
+                       QScriptValue::PropertyGetter | QScriptValue::ReadOnly);
+    engine->setAgent(d->agent);
+}
+
+/*!
+  Detaches this backend from the current script engine.
+  The backend's state (including breakpoints and information on loaded
+  scripts) will be invalidated.
+
+  \sa attach()
+*/
+void QScriptDebuggerBackend::detach()
+{
+    Q_D(QScriptDebuggerBackend);
+    if (d->agent) {
+        QScriptEngine *eng = d->agent->engine();
+        if (eng && eng->agent() == d->agent) {
+            eng->setAgent(0);
+            QScriptValue global = eng->globalObject();
+            global.setProperty(QString::fromLatin1("print"), d->origTraceFunction);
+            d->origTraceFunction = QScriptValue();
+//            global.setProperty(QString::fromLatin1("qAssert"), QScriptValue());
+            global.setProperty(QString::fromLatin1("__FILE__"), QScriptValue(),
+                               QScriptValue::PropertyGetter);
+            global.setProperty(QString::fromLatin1("__FILE__"), d->origFileNameFunction);
+            d->origFileNameFunction = QScriptValue();
+            global.setProperty(QString::fromLatin1("__LINE__"), QScriptValue(),
+                               QScriptValue::PropertyGetter);
+            global.setProperty(QString::fromLatin1("__LINE__"), d->origLineNumberFunction);
+            d->origLineNumberFunction = QScriptValue();
+            d->agent->nullifyBackendPointer();
+            d->agent = 0; // agent is owned by engine
+        }
+    }
+
+    d->pendingEvaluateLineNumber = -1;
+    d->ignoreExceptions = false;
+    d->nextScriptValueIteratorId = 0;
+    qDeleteAll(d->scriptValueIterators);
+    d->scriptValueIterators.clear();
+    qDeleteAll(d->scriptObjectSnapshots);
+    d->scriptObjectSnapshots.clear();
+}
+
+/*!
+  Returns the script engine that this backend is attached to, or 0 if
+  the backend is not attached to an engine.
+
+  \sa attachTo()
+*/
+QScriptEngine *QScriptDebuggerBackend::engine() const
+{
+    Q_D(const QScriptDebuggerBackend);
+    if (!d->agent)
+        return 0;
+    return d->agent->engine();
+}
+
+/*!
+  Steps into the next script statement.
+  When stepping is complete, an event() will be generated.
+*/
+void QScriptDebuggerBackend::stepInto(int count)
+{
+    Q_D(QScriptDebuggerBackend);
+    if (d->agent) {
+        d->agent->enterStepIntoMode(count);
+        resume();
+    }
+}
+
+/*!
+  Steps over the next script statement.
+  When stepping is complete, an event() will be generated.
+*/
+void QScriptDebuggerBackend::stepOver(int count)
+{
+    Q_D(QScriptDebuggerBackend);
+    if (d->agent) {
+        d->agent->enterStepOverMode(count);
+        resume();
+    }
+}
+
+/*!
+  Steps out of the current script function.
+  When stepping is complete, an event() will be generated.
+*/
+void QScriptDebuggerBackend::stepOut()
+{
+    Q_D(QScriptDebuggerBackend);
+    if (d->agent) {
+        d->agent->enterStepOutMode();
+        resume();
+    }
+}
+
+/*!
+  Continues script evaluation. Evaluation will proceed without
+  interruption until either 1) an uncaught exception occurs, 2) a
+  breakpoint is triggered, or 3) interruptEvaluation() is called.
+  In each case, a proper event() will be generated.
+*/
+void QScriptDebuggerBackend::continueEvalution()
+{
+    Q_D(QScriptDebuggerBackend);
+    if (d->agent) {
+        d->agent->enterContinueMode();
+        resume();
+    }
+}
+
+/*!
+  Interrupts script evaluation. When the next script statement is
+  reached, an event() will be generated.
+*/
+void QScriptDebuggerBackend::interruptEvaluation()
+{
+    Q_D(QScriptDebuggerBackend);
+    if (d->agent)
+        d->agent->enterInterruptMode();
+}
+
+/*!
+  Continues evaluation until the location defined by the given \a
+  fileName and \a lineNumber is reached. When the location is reached,
+  an event() will be generated.
+*/
+void QScriptDebuggerBackend::runToLocation(const QString &fileName, int lineNumber)
+{
+    Q_D(QScriptDebuggerBackend);
+    if (d->agent) {
+        d->agent->enterRunToLocationMode(fileName, lineNumber);
+        resume();
+    }
+}
+
+/*!
+  Continues evaluation until the location defined by the given \a
+  scriptId and \a lineNumber is reached. When the location is reached,
+  an event() will be generated.
+*/
+void QScriptDebuggerBackend::runToLocation(qint64 scriptId, int lineNumber)
+{
+    Q_D(QScriptDebuggerBackend);
+    if (d->agent) {
+        d->agent->enterRunToLocationMode(scriptId, lineNumber);
+        resume();
+    }
+}
+
+void QScriptDebuggerBackend::returnToCaller(int contextIndex, const QScriptValue &value)
+{
+    Q_D(QScriptDebuggerBackend);
+    if (d->agent) {
+        d->agent->enterReturnByForceMode(contextIndex, value);
+        resume();
+    }
+}
+
+/*!
+  Evaluates the given \a program. When evaluation is complete, an
+  event() is generated.
+*/
+void QScriptDebuggerBackend::evaluate(int contextIndex, const QString &program,
+                                      const QString &fileName, int lineNumber)
+{
+    Q_D(QScriptDebuggerBackend);
+    d->pendingEvaluateContextIndex = contextIndex;
+    d->pendingEvaluateProgram = program;
+    d->pendingEvaluateFileName = fileName;
+    d->pendingEvaluateLineNumber = lineNumber;
+    if (!engine()->isEvaluating())
+        doPendingEvaluate(/*postEvent=*/true);
+    else
+        resume();
+}
+
+/*!
+  Executes the pending evaluate, if any.
+*/
+void QScriptDebuggerBackend::doPendingEvaluate(bool postEvent)
+{
+    Q_D(QScriptDebuggerBackend);
+    QString program = d->pendingEvaluateProgram;
+    if (program.isEmpty())
+        return;
+    int contextIndex = d->pendingEvaluateContextIndex;
+    QScriptContext *ctx = context(contextIndex);
+    Q_ASSERT(ctx != 0);
+    QString fileName = d->pendingEvaluateFileName;
+    int lineNumber = d->pendingEvaluateLineNumber;
+    d->pendingEvaluateProgram = QString();
+    d->pendingEvaluateFileName = QString();
+    d->pendingEvaluateLineNumber = -1;
+    d->pendingEvaluateContextIndex = -1;
+
+    // push a new context and initialize its scope chain etc.
+    {
+        QScriptContext *evalContext = engine()->pushContext();
+        QScriptValueList scopeChain = ctx->scopeChain();
+        if (scopeChain.isEmpty())
+            scopeChain.append(engine()->globalObject());
+        while (!scopeChain.isEmpty())
+            evalContext->pushScope(scopeChain.takeLast());
+        evalContext->setActivationObject(ctx->activationObject());
+        evalContext->setThisObject(ctx->thisObject());
+    }
+
+    d->agent->enterContinueMode();
+    // set a flag so that any exception that happens in
+    // the evaluate() is not sent to the debugger
+    d->ignoreExceptions = true;
+    bool hadException = engine()->hasUncaughtException();
+    QScriptValue ret = engine()->evaluate(program, fileName, lineNumber);
+    d->ignoreExceptions = false;
+    if (!hadException && engine()->hasUncaughtException())
+        engine()->clearExceptions();
+    engine()->popContext();
+
+    QScriptDebuggerValue retret(ret);
+    QScriptDebuggerEvent e(QScriptDebuggerEvent::InlineEvalFinished);
+    e.setScriptValue(retret);
+    if (!ret.isUndefined())
+        e.setMessage(ret.toString()); // for convenience -- we always need it
+
+    e.setNestedEvaluate(engine()->isEvaluating());
+
+    if (postEvent) {
+        QScriptDebuggerEventEvent *de = new QScriptDebuggerEventEvent(e);
+        d->postEvent(de);
+    } else {
+        event(e);
+    }
+}
+
+/*!
+  Sets a breakpoint defined by the given \a data, and returns a unique
+  identifier for the new breakpoint.
+
+  If the conditions of the breakpoint is satisfied at some point
+  during script evaluation, a breakpoint event() will be generated.
+
+  \sa deleteBreakpoint(), breakpoints()
+*/
+int QScriptDebuggerBackend::setBreakpoint(const QScriptBreakpointData &data)
+{
+    Q_D(QScriptDebuggerBackend);
+    if (!d->agent)
+        return -1;
+    if (!data.isValid())
+        return -1;
+    return d->agent->setBreakpoint(data);
+}
+
+/*!
+  Deletes the breakpoint identified by the given \a id.  Returns true
+  if the breakpoint was deleted (i.e. the \a id was valid), otherwise
+  returns false.
+
+  \sa setBreakpoint()
+*/
+bool QScriptDebuggerBackend::deleteBreakpoint(int id)
+{
+    Q_D(QScriptDebuggerBackend);
+    if (!d->agent)
+        return false;
+    return d->agent->deleteBreakpoint(id);
+}
+
+/*!
+  Deletes all breakpoints.
+*/
+void QScriptDebuggerBackend::deleteAllBreakpoints()
+{
+    Q_D(QScriptDebuggerBackend);
+    if (d->agent)
+        d->agent->deleteAllBreakpoints();
+}
+
+/*!
+  Returns the data associated with the breakpoint identified by the
+  given \a id.
+*/
+QScriptBreakpointData QScriptDebuggerBackend::breakpointData(int id) const
+{
+    Q_D(const QScriptDebuggerBackend);
+    if (!d->agent)
+        return QScriptBreakpointData();
+    return d->agent->breakpointData(id);
+}
+
+/*!
+  Sets the \a data associated with the breakpoint identified by the
+  given \a id.
+*/
+bool QScriptDebuggerBackend::setBreakpointData(int id, const QScriptBreakpointData &data)
+{
+    Q_D(QScriptDebuggerBackend);
+    if (d->agent)
+        return d->agent->setBreakpointData(id, data);
+    return false;
+}
+
+/*!
+  Returns this backend's breakpoints.
+
+  \sa setBreakpoint()
+*/
+QScriptBreakpointMap QScriptDebuggerBackend::breakpoints() const
+{
+    Q_D(const QScriptDebuggerBackend);
+    if (!d->agent)
+        return QScriptBreakpointMap();
+    return d->agent->breakpoints();
+}
+
+/*!
+  Returns the scripts that this backend knows about.
+
+  \sa scriptData()
+*/
+QScriptScriptMap QScriptDebuggerBackend::scripts() const
+{
+    Q_D(const QScriptDebuggerBackend);
+    if (!d->agent)
+        return QScriptScriptMap();
+    return d->agent->scripts();
+}
+
+/*!
+  Returns the data for the script identified by the given \a id.
+
+  \sa scripts()
+*/
+QScriptScriptData QScriptDebuggerBackend::scriptData(qint64 id) const
+{
+    Q_D(const QScriptDebuggerBackend);
+    if (!d->agent)
+        return QScriptScriptData();
+    return d->agent->scriptData(id);
+}
+
+/*!
+  Makes a checkpoint of the currently loaded scripts.
+
+  \sa scriptsDelta()
+*/
+void QScriptDebuggerBackend::scriptsCheckpoint()
+{
+    Q_D(QScriptDebuggerBackend);
+    if (d->agent)
+        d->agent->scriptsCheckpoint();
+}
+
+/*!
+  Returns the difference between the latest scripts checkpoint and the
+  previous checkpoint.  The first item in the pair is a list
+  containing the identifiers of the scripts that were added. The
+  second item in the pair is a list containing the identifiers of the
+  scripts that were removed.
+
+  \sa scriptsCheckpoint()
+*/
+QScriptScriptsDelta QScriptDebuggerBackend::scriptsDelta() const
+{
+    Q_D(const QScriptDebuggerBackend);
+    if (!d->agent)
+        return QPair<QList<qint64>, QList<qint64> >();
+    return d->agent->scriptsDelta();
+}
+
+qint64 QScriptDebuggerBackend::resolveScript(const QString &fileName) const
+{
+    Q_D(const QScriptDebuggerBackend);
+    if (!d->agent)
+        return -1;
+    return d->agent->resolveScript(fileName);
+}
+
+/*!
+  Returns the number of contexts (frames).
+*/
+int QScriptDebuggerBackend::contextCount() const
+{
+    if (!engine())
+        return 0;
+    return contextIds().count();
+}
+
+/*!
+  Returns the context for the frame with the given \a index.
+*/
+QScriptContext *QScriptDebuggerBackend::context(int index) const
+{
+    if (index < 0)
+        return 0;
+    QScriptContext *ctx = engine()->currentContext();
+    while (ctx) {
+        if (index == 0)
+            return ctx;
+        ctx = ctx->parentContext();
+        --index;
+    }
+    return 0;
+}
+
+/*!
+  Returns a backtrace of the current execution.
+*/
+QStringList QScriptDebuggerBackend::backtrace() const
+{
+    if (!engine())
+        return QStringList();
+    return engine()->currentContext()->backtrace();
+}
+
+QList<qint64> QScriptDebuggerBackend::contextIds() const
+{
+    Q_D(const QScriptDebuggerBackend);
+    if (!d->agent)
+        return QList<qint64>();
+    return d->agent->contextIds();
+}
+
+QScriptContextsDelta QScriptDebuggerBackend::contextsCheckpoint()
+{
+    Q_D(QScriptDebuggerBackend);
+    if (!d->agent)
+        return QScriptContextsDelta();
+    return d->agent->contextsCheckpoint();
+}
+
+int QScriptDebuggerBackend::newScriptObjectSnapshot()
+{
+    Q_D(QScriptDebuggerBackend);
+    int id = d->nextScriptObjectSnapshotId;
+    ++d->nextScriptObjectSnapshotId;
+    d->scriptObjectSnapshots[id] = new QScriptObjectSnapshot();
+    return id;
+}
+
+QScriptObjectSnapshot *QScriptDebuggerBackend::scriptObjectSnapshot(int id) const
+{
+    Q_D(const QScriptDebuggerBackend);
+    return d->scriptObjectSnapshots.value(id);
+}
+
+void QScriptDebuggerBackend::deleteScriptObjectSnapshot(int id)
+{
+    Q_D(QScriptDebuggerBackend);
+    QScriptObjectSnapshot *snap = d->scriptObjectSnapshots.take(id);
+    delete snap;
+}
+
+int QScriptDebuggerBackend::newScriptValueIterator(const QScriptValue &object)
+{
+    Q_D(QScriptDebuggerBackend);
+    int id = d->nextScriptValueIteratorId;
+    ++d->nextScriptValueIteratorId;
+    d->scriptValueIterators[id] = new QScriptValueIterator(object);
+    return id;
+}
+
+QScriptValueIterator *QScriptDebuggerBackend::scriptValueIterator(int id) const
+{
+    Q_D(const QScriptDebuggerBackend);
+    return d->scriptValueIterators.value(id);
+}
+
+void QScriptDebuggerBackend::deleteScriptValueIterator(int id)
+{
+    Q_D(QScriptDebuggerBackend);
+    QScriptValueIterator *it = d->scriptValueIterators.take(id);
+    delete it;
+}
+
+bool QScriptDebuggerBackend::ignoreExceptions() const
+{
+    Q_D(const QScriptDebuggerBackend);
+    return d->ignoreExceptions;
+}
+
+void QScriptDebuggerBackend::setIgnoreExceptions(bool ignore)
+{
+    Q_D(QScriptDebuggerBackend);
+    d->ignoreExceptions = ignore;
+}
+
+/*!
+  Returns a trace function. The trace function has similar semantics
+  to the built-in print() function; however, instead of writing text
+  to standard output, it generates a trace event containing the text.
+*/
+QScriptValue QScriptDebuggerBackend::traceFunction() const
+{
+    Q_D(const QScriptDebuggerBackend);
+    if (!engine())
+        return QScriptValue();
+    QScriptValue fun = engine()->newFunction(QScriptDebuggerBackendPrivate::trace);
+    fun.setData(qScriptValueFromValue(engine(), const_cast<QScriptDebuggerBackendPrivate*>(d)));
+    return fun;
+}
+
+QScriptValue QScriptDebuggerBackend::assertFunction() const
+{
+    if (!engine())
+        return QScriptValue();
+    QScriptValue fun = engine()->newFunction(QScriptDebuggerBackendPrivate::qsassert);
+    return fun;
+}
+
+QScriptValue QScriptDebuggerBackend::fileNameFunction() const
+{
+    if (!engine())
+        return QScriptValue();
+    QScriptValue fun = engine()->newFunction(QScriptDebuggerBackendPrivate::fileName);
+    return fun;
+}
+
+QScriptValue QScriptDebuggerBackend::lineNumberFunction() const
+{
+    if (!engine())
+        return QScriptValue();
+    QScriptValue fun = engine()->newFunction(QScriptDebuggerBackendPrivate::lineNumber);
+    return fun;
+}
+
+QScriptDebuggerCommandExecutor *QScriptDebuggerBackend::commandExecutor() const
+{
+    Q_D(const QScriptDebuggerBackend);
+    if (d->commandExecutor)
+        return d->commandExecutor;
+    QScriptDebuggerBackendPrivate *dd = const_cast<QScriptDebuggerBackendPrivate*>(d);
+    dd->commandExecutor = new QScriptDebuggerCommandExecutor();
+    return dd->commandExecutor;
+}
+
+void QScriptDebuggerBackend::setCommandExecutor(QScriptDebuggerCommandExecutor *executor)
+{
+    Q_D(QScriptDebuggerBackend);
+    d->commandExecutor = executor;
+}
+
+/*!
+  \fn void QScriptDebuggerBackend::resume()
+
+  This function is called when control should be returned back to the
+  back-end, i.e. when script evaluation should be resumed after an
+  event has been delivered.
+
+  Subclasses must reimplement this function to make event() return.
+
+  \sa event()
+*/
+
+/*!
+  \fn void QScriptDebuggerBackend::event(const QScriptDebuggerEvent &event)
+
+  This function is called when the back-end has generated the given \a event.
+
+  Subclasses must reimplement this function to handle the
+  event. Typically the event is forwarded to a
+  QScriptDebuggerFrontend, which will in turn forward it to its
+  QScriptDebuggerClient. The client may then query the front-end for
+  information about the execution state, and call e.g.
+  continueEvalution() to resume execution. This function should block
+  until resume() is called.
+
+  \sa resume()
+*/
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerbackend_p.h b/src/scripttools/debugging/qscriptdebuggerbackend_p.h
new file mode 100644
index 0000000..384f027
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerbackend_p.h
@@ -0,0 +1,156 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERBACKEND_P_H
+#define QSCRIPTDEBUGGERBACKEND_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+#include <QtCore/qpair.h>
+
+#include "qscriptbreakpointdata_p.h"
+#include "qscriptscriptdata_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptContext;
+class QScriptEngine;
+class QScriptDebuggerCommandExecutor;
+class QScriptDebuggerEvent;
+class QScriptValue;
+class QScriptValueIterator;
+class QScriptObjectSnapshot;
+class QStringList;
+
+typedef QPair<QList<qint64>, QList<qint64> > QScriptScriptsDelta;
+typedef QPair<QList<qint64>, QList<qint64> > QScriptContextsDelta;
+
+class QScriptDebuggerBackendPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerBackend
+{
+public:
+    QScriptDebuggerBackend();
+    virtual ~QScriptDebuggerBackend();
+
+    void attachTo(QScriptEngine *engine);
+    void detach();
+
+    QScriptEngine *engine() const;
+
+    void stepInto(int count = 1);
+    void stepOver(int count = 1);
+    void stepOut();
+    void continueEvalution();
+    void interruptEvaluation();
+    void runToLocation(const QString &fileName, int lineNumber);
+    void runToLocation(qint64 scriptId, int lineNumber);
+    void returnToCaller(int contextIndex, const QScriptValue &value);
+    void evaluate(int contextIndex, const QString &program,
+                  const QString &fileName, int lineNumber);
+
+    int setBreakpoint(const QScriptBreakpointData &data);
+    bool deleteBreakpoint(int id);
+    void deleteAllBreakpoints();
+    QScriptBreakpointData breakpointData(int id) const;
+    bool setBreakpointData(int id, const QScriptBreakpointData &data);
+    QScriptBreakpointMap breakpoints() const;
+
+    QScriptScriptMap scripts() const;
+    QScriptScriptData scriptData(qint64 id) const;
+    void scriptsCheckpoint();
+    QScriptScriptsDelta scriptsDelta() const;
+    qint64 resolveScript(const QString &fileName) const;
+
+    int contextCount() const;
+    QScriptContext *context(int index) const;
+    QStringList backtrace() const;
+    QList<qint64> contextIds() const;
+    QScriptContextsDelta contextsCheckpoint();
+
+    int newScriptObjectSnapshot();
+    QScriptObjectSnapshot *scriptObjectSnapshot(int id) const;
+    void deleteScriptObjectSnapshot(int id);
+
+    int newScriptValueIterator(const QScriptValue &object);
+    QScriptValueIterator *scriptValueIterator(int id) const;
+    void deleteScriptValueIterator(int id);
+
+    QScriptValue traceFunction() const;
+    QScriptValue assertFunction() const;
+    QScriptValue fileNameFunction() const;
+    QScriptValue lineNumberFunction() const;
+
+    void doPendingEvaluate(bool postEvent);
+
+    bool ignoreExceptions() const;
+    void setIgnoreExceptions(bool ignore);
+
+    QScriptDebuggerCommandExecutor *commandExecutor() const;
+    void setCommandExecutor(QScriptDebuggerCommandExecutor *executor);
+
+    virtual void resume() = 0;
+
+protected:
+    virtual void event(const QScriptDebuggerEvent &event) = 0;
+
+protected:
+    QScriptDebuggerBackend(QScriptDebuggerBackendPrivate &dd);
+    QScopedPointer<QScriptDebuggerBackendPrivate> d_ptr;
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerBackend)
+    Q_DISABLE_COPY(QScriptDebuggerBackend)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerbackend_p_p.h b/src/scripttools/debugging/qscriptdebuggerbackend_p_p.h
new file mode 100644
index 0000000..a9c8a4e
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerbackend_p_p.h
@@ -0,0 +1,137 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERBACKEND_P_P_H
+#define QSCRIPTDEBUGGERBACKEND_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+#include <QtCore/qhash.h>
+#include <QtCore/qlist.h>
+#include <QtScript/qscriptvalue.h>
+
+#include "qscriptdebuggerbackend_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QEvent;
+class QString;
+class QScriptContext;
+class QScriptEngine;
+class QScriptValueIterator;
+class QScriptObjectSnapshot;
+class QScriptDebuggerAgent;
+class QScriptDebuggerCommandExecutor;
+
+class QScriptDebuggerBackend;
+class Q_AUTOTEST_EXPORT QScriptDebuggerBackendPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerBackend)
+public:
+    QScriptDebuggerBackendPrivate();
+    virtual ~QScriptDebuggerBackendPrivate();
+
+    void postEvent(QEvent *e);
+    virtual bool event(QEvent *e);
+
+    // events reported by agent
+    virtual void stepped(qint64 scriptId, int lineNumber, int columnNumber,
+                         const QScriptValue &result);
+    virtual void locationReached(qint64 scriptId, int lineNumber, int columnNumber);
+    virtual void interrupted(qint64 scriptId, int lineNumber, int columnNumber);
+    virtual void breakpoint(qint64 scriptId, int lineNumber, int columnNumber,
+                            int breakpointId);
+    virtual void exception(qint64 scriptId, const QScriptValue &exception,
+                           bool hasHandler);
+    virtual void debuggerInvocationRequest(qint64 scriptId, int lineNumber,
+                                           int columnNumber);
+    virtual void forcedReturn(qint64 scriptId, int lineNumber, int columnNumber,
+                              const QScriptValue &value);
+
+    static QScriptValue trace(QScriptContext *context,
+                              QScriptEngine *engine);
+    static QScriptValue qsassert(QScriptContext *context,
+                                 QScriptEngine *engine);
+    static QScriptValue fileName(QScriptContext *context,
+                                 QScriptEngine *engine);
+    static QScriptValue lineNumber(QScriptContext *context,
+                                   QScriptEngine *engine);
+
+    void agentDestroyed(QScriptDebuggerAgent *);
+
+    QScriptDebuggerAgent *agent;
+    QScriptDebuggerCommandExecutor *commandExecutor;
+
+    int pendingEvaluateContextIndex;
+    QString pendingEvaluateProgram;
+    QString pendingEvaluateFileName;
+    int pendingEvaluateLineNumber;
+    bool ignoreExceptions;
+
+    int nextScriptValueIteratorId;
+    QMap<int, QScriptValueIterator*> scriptValueIterators;
+
+    int nextScriptObjectSnapshotId;
+    QMap<int, QScriptObjectSnapshot*> scriptObjectSnapshots;
+
+    QObject *eventReceiver;
+
+    QScriptDebuggerBackend *q_ptr;
+
+    QScriptValue origTraceFunction;
+    QScriptValue origFileNameFunction;
+    QScriptValue origLineNumberFunction;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggercodefinderwidget.cpp b/src/scripttools/debugging/qscriptdebuggercodefinderwidget.cpp
new file mode 100644
index 0000000..efb5979
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercodefinderwidget.cpp
@@ -0,0 +1,249 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggercodefinderwidget_p.h"
+#include "qscriptdebuggercodefinderwidgetinterface_p_p.h"
+
+#include <QtGui/qboxlayout.h>
+#include <QtGui/qlineedit.h>
+#include <QtGui/qcheckbox.h>
+#include <QtGui/qlabel.h>
+#include <QtGui/qtoolbutton.h>
+#include <QtGui/qevent.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerCodeFinderWidgetPrivate
+    : public QScriptDebuggerCodeFinderWidgetInterfacePrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerCodeFinderWidget)
+public:
+    QScriptDebuggerCodeFinderWidgetPrivate();
+    ~QScriptDebuggerCodeFinderWidgetPrivate();
+
+    // private slots
+    void _q_updateButtons();
+    void _q_onTextChanged(const QString &);
+    void _q_next();
+    void _q_previous();
+
+    int findOptions() const;
+
+    QLineEdit *editFind;
+    QCheckBox *checkCase;
+    QLabel *labelWrapped;
+    QToolButton *toolNext;
+    QToolButton *toolClose;
+    QToolButton *toolPrevious;
+    QCheckBox *checkWholeWords;
+};
+
+QScriptDebuggerCodeFinderWidgetPrivate::QScriptDebuggerCodeFinderWidgetPrivate()
+{
+}
+
+QScriptDebuggerCodeFinderWidgetPrivate::~QScriptDebuggerCodeFinderWidgetPrivate()
+{
+}
+
+void QScriptDebuggerCodeFinderWidgetPrivate::_q_updateButtons()
+{
+    if (editFind->text().isEmpty()) {
+        toolPrevious->setEnabled(false);
+        toolNext->setEnabled(false);
+    } else {
+        toolPrevious->setEnabled(true);
+        toolNext->setEnabled(true);
+    }
+}
+
+int QScriptDebuggerCodeFinderWidgetPrivate::findOptions() const
+{
+    int flags = 0;
+    if (checkCase->isChecked())
+        flags |= QTextDocument::FindCaseSensitively;
+    if (checkWholeWords->isChecked())
+        flags |= QTextDocument::FindWholeWords;
+    return flags;
+}
+
+void QScriptDebuggerCodeFinderWidgetPrivate::_q_onTextChanged(const QString &text)
+{
+    emit q_func()->findRequest(text, findOptions() | 0x100);
+}
+
+void QScriptDebuggerCodeFinderWidgetPrivate::_q_next()
+{
+    emit q_func()->findRequest(editFind->text(), findOptions());
+}
+
+void QScriptDebuggerCodeFinderWidgetPrivate::_q_previous()
+{
+    emit q_func()->findRequest(editFind->text(), findOptions() | QTextDocument::FindBackward);
+}
+
+QScriptDebuggerCodeFinderWidget::QScriptDebuggerCodeFinderWidget(QWidget *parent)
+    : QScriptDebuggerCodeFinderWidgetInterface(
+        *new QScriptDebuggerCodeFinderWidgetPrivate, parent, 0)
+{
+    Q_D(QScriptDebuggerCodeFinderWidget);
+    QString system = QLatin1String("win");
+    QHBoxLayout *hboxLayout = new QHBoxLayout(this);
+#ifdef Q_OS_MAC
+    system = QLatin1String("mac");
+#else
+    hboxLayout->setSpacing(6);
+    hboxLayout->setMargin(0);
+#endif
+
+    d->toolClose = new QToolButton(this);
+    d->toolClose->setIcon(QIcon(QString::fromUtf8(":/qt/scripttools/debugging/images/%1/closetab.png").arg(system)));
+    d->toolClose->setAutoRaise(true);
+    d->toolClose->setText(tr("Close"));
+    hboxLayout->addWidget(d->toolClose);
+
+    d->editFind = new QLineEdit(this);
+    d->editFind->setMinimumSize(QSize(150, 0));
+    connect(d->editFind, SIGNAL(textChanged(QString)),
+            this, SLOT(_q_updateButtons()));
+    connect(d->editFind, SIGNAL(returnPressed()),
+            this, SLOT(_q_next()));
+    hboxLayout->addWidget(d->editFind);
+
+    d->toolPrevious = new QToolButton(this);
+    d->toolPrevious->setAutoRaise(true);
+    d->toolPrevious->setText(tr("Previous"));
+    d->toolPrevious->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
+    d->toolPrevious->setIcon(QIcon(QString::fromUtf8(":/qt/scripttools/debugging/images/%1/previous.png").arg(system)));
+    hboxLayout->addWidget(d->toolPrevious);
+
+    d->toolNext = new QToolButton(this);
+    d->toolNext->setAutoRaise(true);
+    d->toolNext->setText(tr("Next"));
+    d->toolNext->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
+    d->toolNext->setIcon(QIcon(QString::fromUtf8(":/qt/scripttools/debugging/images/%1/next.png").arg(system)));
+    hboxLayout->addWidget(d->toolNext);
+
+    d->checkCase = new QCheckBox(tr("Case Sensitive"), this);
+    hboxLayout->addWidget(d->checkCase);
+
+    d->checkWholeWords = new QCheckBox(tr("Whole words"), this);
+    hboxLayout->addWidget(d->checkWholeWords);
+
+    d->labelWrapped = new QLabel(this);
+    d->labelWrapped->setMinimumSize(QSize(0, 20));
+    d->labelWrapped->setMaximumSize(QSize(115, 20));
+    d->labelWrapped->setTextFormat(Qt::RichText);
+    d->labelWrapped->setScaledContents(true);
+    d->labelWrapped->setAlignment(Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter);
+    d->labelWrapped->setText(tr("<img src=\":/qt/scripttools/debugging/images/wrap.png\">&nbsp;Search wrapped"));
+    hboxLayout->addWidget(d->labelWrapped);
+
+    QSpacerItem *spacerItem = new QSpacerItem(20, 20, QSizePolicy::Expanding, QSizePolicy::Minimum);
+    hboxLayout->addItem(spacerItem);
+    setMinimumWidth(minimumSizeHint().width());
+    d->labelWrapped->hide();
+
+    d->_q_updateButtons();
+
+    setFocusProxy(d->editFind);
+    QObject::connect(d->toolClose, SIGNAL(clicked()), this, SLOT(hide()));
+    QObject::connect(d->editFind, SIGNAL(textChanged(QString)),
+                     this, SLOT(_q_onTextChanged(QString)));
+    QObject::connect(d->toolNext, SIGNAL(clicked()), this, SLOT(_q_next()));
+    QObject::connect(d->toolPrevious, SIGNAL(clicked()), this, SLOT(_q_previous()));
+}
+
+QScriptDebuggerCodeFinderWidget::~QScriptDebuggerCodeFinderWidget()
+{
+}
+
+int QScriptDebuggerCodeFinderWidget::findOptions() const
+{
+    Q_D(const QScriptDebuggerCodeFinderWidget);
+    return d->findOptions();
+}
+
+QString QScriptDebuggerCodeFinderWidget::text() const
+{
+    Q_D(const QScriptDebuggerCodeFinderWidget);
+    return d->editFind->text();
+}
+
+void QScriptDebuggerCodeFinderWidget::setText(const QString &text)
+{
+    Q_D(const QScriptDebuggerCodeFinderWidget);
+    d->editFind->setText(text);
+}
+
+void QScriptDebuggerCodeFinderWidget::setOK(bool ok)
+{
+    Q_D(QScriptDebuggerCodeFinderWidget);
+    QPalette p = d->editFind->palette();
+    QColor c;
+    if (ok)
+        c = Qt::white;
+    else
+        c = QColor(255, 102, 102);
+    p.setColor(QPalette::Active, QPalette::Base, c);
+    d->editFind->setPalette(p);
+    if (!ok)
+        d->labelWrapped->hide();
+}
+
+void QScriptDebuggerCodeFinderWidget::setWrapped(bool wrapped)
+{
+    Q_D(QScriptDebuggerCodeFinderWidget);
+    d->labelWrapped->setVisible(wrapped);
+}
+
+void QScriptDebuggerCodeFinderWidget::keyPressEvent(QKeyEvent *e)
+{
+    if (e->key() == Qt::Key_Escape)
+        hide();
+    else
+        QScriptDebuggerCodeFinderWidgetInterface::keyPressEvent(e);
+}
+
+QT_END_NAMESPACE
+
+#include "moc_qscriptdebuggercodefinderwidget_p.cpp"
diff --git a/src/scripttools/debugging/qscriptdebuggercodefinderwidget_p.h b/src/scripttools/debugging/qscriptdebuggercodefinderwidget_p.h
new file mode 100644
index 0000000..52e1118
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercodefinderwidget_p.h
@@ -0,0 +1,92 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCODEFINDERWIDGET_P_H
+#define QSCRIPTDEBUGGERCODEFINDERWIDGET_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscriptdebuggercodefinderwidgetinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerCodeFinderWidgetPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerCodeFinderWidget:
+    public QScriptDebuggerCodeFinderWidgetInterface
+{
+    Q_OBJECT
+public:
+    QScriptDebuggerCodeFinderWidget(QWidget *parent = 0);
+    ~QScriptDebuggerCodeFinderWidget();
+
+    int findOptions() const;
+
+    QString text() const;
+    void setText(const QString &text);
+
+    void setOK(bool ok);
+    void setWrapped(bool wrapped);
+
+protected:
+    void keyPressEvent(QKeyEvent *e);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerCodeFinderWidget)
+    Q_DISABLE_COPY(QScriptDebuggerCodeFinderWidget)
+
+    Q_PRIVATE_SLOT(d_func(), void _q_updateButtons())
+    Q_PRIVATE_SLOT(d_func(), void _q_onTextChanged(const QString &))
+    Q_PRIVATE_SLOT(d_func(), void _q_next())
+    Q_PRIVATE_SLOT(d_func(), void _q_previous())
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggercodefinderwidgetinterface.cpp b/src/scripttools/debugging/qscriptdebuggercodefinderwidgetinterface.cpp
new file mode 100644
index 0000000..0e5266d
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercodefinderwidgetinterface.cpp
@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggercodefinderwidgetinterface_p.h"
+#include "qscriptdebuggercodefinderwidgetinterface_p_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QScriptDebuggerCodeFinderWidgetInterfacePrivate::QScriptDebuggerCodeFinderWidgetInterfacePrivate()
+{
+}
+
+QScriptDebuggerCodeFinderWidgetInterfacePrivate::~QScriptDebuggerCodeFinderWidgetInterfacePrivate()
+{
+}
+
+QScriptDebuggerCodeFinderWidgetInterface::~QScriptDebuggerCodeFinderWidgetInterface()
+{
+}
+
+QScriptDebuggerCodeFinderWidgetInterface::QScriptDebuggerCodeFinderWidgetInterface(
+    QScriptDebuggerCodeFinderWidgetInterfacePrivate &dd,
+    QWidget *parent, Qt::WindowFlags flags)
+    : QWidget(dd, parent, flags)
+{
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggercodefinderwidgetinterface_p.h b/src/scripttools/debugging/qscriptdebuggercodefinderwidgetinterface_p.h
new file mode 100644
index 0000000..1c1b8b9
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercodefinderwidgetinterface_p.h
@@ -0,0 +1,93 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCODEFINDERWIDGETINTERFACE_P_H
+#define QSCRIPTDEBUGGERCODEFINDERWIDGETINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/qwidget.h>
+
+#include <QtGui/qtextdocument.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerCodeFinderWidgetInterfacePrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerCodeFinderWidgetInterface:
+    public QWidget
+{
+    Q_OBJECT
+public:
+    ~QScriptDebuggerCodeFinderWidgetInterface();
+
+    virtual int findOptions() const = 0;
+
+    virtual QString text() const = 0;
+    virtual void setText(const QString &text) = 0;
+
+    virtual void setOK(bool ok) = 0;
+    virtual void setWrapped(bool wrapped) = 0;
+
+Q_SIGNALS:
+    void findRequest(const QString &exp, int options);
+
+protected:
+    QScriptDebuggerCodeFinderWidgetInterface(
+        QScriptDebuggerCodeFinderWidgetInterfacePrivate &dd,
+        QWidget *parent, Qt::WindowFlags flags);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerCodeFinderWidgetInterface)
+    Q_DISABLE_COPY(QScriptDebuggerCodeFinderWidgetInterface)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggercodefinderwidgetinterface_p_p.h b/src/scripttools/debugging/qscriptdebuggercodefinderwidgetinterface_p_p.h
new file mode 100644
index 0000000..87526c9
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercodefinderwidgetinterface_p_p.h
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCODEFINDERWIDGETINTERFACE_P_P_H
+#define QSCRIPTDEBUGGERCODEFINDERWIDGETINTERFACE_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qwidget_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerCodeFinderWidgetInterface;
+class QScriptDebuggerCodeFinderWidgetInterfacePrivate
+    : public QWidgetPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerCodeFinderWidgetInterface)
+public:
+    QScriptDebuggerCodeFinderWidgetInterfacePrivate();
+    ~QScriptDebuggerCodeFinderWidgetInterfacePrivate();
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggercodeview.cpp b/src/scripttools/debugging/qscriptdebuggercodeview.cpp
new file mode 100644
index 0000000..35e218e
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercodeview.cpp
@@ -0,0 +1,260 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggercodeview_p.h"
+#include "qscriptdebuggercodeviewinterface_p_p.h"
+
+#include "qscriptedit_p.h"
+
+#include <QtGui/qboxlayout.h>
+#include <QtGui/qtextobject.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerCodeViewPrivate
+    : public QScriptDebuggerCodeViewInterfacePrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerCodeView)
+public:
+    QScriptDebuggerCodeViewPrivate();
+    ~QScriptDebuggerCodeViewPrivate();
+
+    QScriptEdit *editor;
+};
+
+QScriptDebuggerCodeViewPrivate::QScriptDebuggerCodeViewPrivate()
+{
+}
+
+QScriptDebuggerCodeViewPrivate::~QScriptDebuggerCodeViewPrivate()
+{
+}
+
+QScriptDebuggerCodeView::QScriptDebuggerCodeView(QWidget *parent)
+    : QScriptDebuggerCodeViewInterface(*new QScriptDebuggerCodeViewPrivate, parent, 0)
+{
+    Q_D(QScriptDebuggerCodeView);
+    d->editor = new QScriptEdit();
+    d->editor->setReadOnly(true);
+    d->editor->setBackgroundVisible(false);
+    QObject::connect(d->editor, SIGNAL(breakpointToggleRequest(int,bool)),
+                     this, SIGNAL(breakpointToggleRequest(int,bool)));
+    QObject::connect(d->editor, SIGNAL(breakpointEnableRequest(int,bool)),
+                     this, SIGNAL(breakpointEnableRequest(int,bool)));
+    QVBoxLayout *vbox = new QVBoxLayout(this);
+    vbox->setMargin(0);
+    vbox->addWidget(d->editor);
+}
+
+QScriptDebuggerCodeView::~QScriptDebuggerCodeView()
+{
+}
+
+QString QScriptDebuggerCodeView::text() const
+{
+    Q_D(const QScriptDebuggerCodeView);
+    return d->editor->toPlainText();
+}
+
+void QScriptDebuggerCodeView::setText(const QString &text)
+{
+    Q_D(QScriptDebuggerCodeView);
+    d->editor->setPlainText(text);
+}
+
+int QScriptDebuggerCodeView::cursorLineNumber() const
+{
+    Q_D(const QScriptDebuggerCodeView);
+    return d->editor->currentLineNumber();
+}
+
+void QScriptDebuggerCodeView::gotoLine(int lineNumber)
+{
+    Q_D(QScriptDebuggerCodeView);
+    d->editor->gotoLine(lineNumber);
+}
+
+int QScriptDebuggerCodeView::find(const QString &exp, int options)
+{
+    Q_D(QScriptDebuggerCodeView);
+    QPlainTextEdit *ed = (QPlainTextEdit*)d->editor;
+    QTextCursor cursor = ed->textCursor();
+    if (options & 0x100) {
+        // start searching from the beginning of selection
+        if (cursor.hasSelection()) {
+            int len = cursor.selectedText().length();
+            cursor.clearSelection();
+            cursor.setPosition(cursor.position() - len);
+            ed->setTextCursor(cursor);
+        }
+        options &= ~0x100;
+    }
+    int ret = 0;
+    if (ed->find(exp, QTextDocument::FindFlags(options))) {
+        ret |= 0x1;
+    } else {
+        QTextCursor curse = cursor;
+        curse.movePosition(QTextCursor::Start);
+        ed->setTextCursor(curse);
+        if (ed->find(exp, QTextDocument::FindFlags(options)))
+            ret |= 0x1 | 0x2;
+        else
+            ed->setTextCursor(cursor);
+    }
+    return ret;
+}
+
+void QScriptDebuggerCodeView::setExecutionLineNumber(int lineNumber, bool error)
+{
+    Q_D(QScriptDebuggerCodeView);
+    d->editor->setExecutionLineNumber(lineNumber, error);
+}
+
+void QScriptDebuggerCodeView::setExecutableLineNumbers(const QSet<int> &lineNumbers)
+{
+    Q_D(QScriptDebuggerCodeView);
+    d->editor->setExecutableLineNumbers(lineNumbers);
+}
+
+int QScriptDebuggerCodeView::baseLineNumber() const
+{
+    Q_D(const QScriptDebuggerCodeView);
+    return d->editor->baseLineNumber();
+}
+
+void QScriptDebuggerCodeView::setBaseLineNumber(int lineNumber)
+{
+    Q_D(QScriptDebuggerCodeView);
+    d->editor->setBaseLineNumber(lineNumber);
+}
+
+void QScriptDebuggerCodeView::setBreakpoint(int lineNumber)
+{
+    Q_D(QScriptDebuggerCodeView);
+    d->editor->setBreakpoint(lineNumber);
+}
+
+void QScriptDebuggerCodeView::deleteBreakpoint(int lineNumber)
+{
+    Q_D(QScriptDebuggerCodeView);
+    d->editor->deleteBreakpoint(lineNumber);
+}
+
+void QScriptDebuggerCodeView::setBreakpointEnabled(int lineNumber, bool enable)
+{
+    Q_D(QScriptDebuggerCodeView);
+    d->editor->setBreakpointEnabled(lineNumber, enable);
+}
+
+namespace {
+
+static bool isIdentChar(const QChar &ch)
+{
+    static QChar underscore = QLatin1Char('_');
+    return ch.isLetter() || (ch == underscore);
+}
+
+} // namespace
+
+/*!
+  \reimp
+*/
+bool QScriptDebuggerCodeView::event(QEvent *e)
+{
+    Q_D(QScriptDebuggerCodeView);
+    if (e->type() == QEvent::ToolTip) {
+        if (d->editor->executionLineNumber() == -1)
+            return false;
+        QHelpEvent *he = static_cast<QHelpEvent*>(e);
+        QPoint pt = he->pos();
+        pt.rx() -= d->editor->extraAreaWidth();
+        pt.ry() -= 8;
+        QTextCursor cursor = d->editor->cursorForPosition(pt);
+        QTextBlock block = cursor.block();
+        QString contents = block.text();
+        if (contents.isEmpty())
+            return false;
+        int linePosition = cursor.position() - block.position();
+        if (linePosition < 0)
+            linePosition = 0;
+
+        // ### generalize -- same as in completiontask
+
+        int pos = linePosition;
+        if ((pos > 0) && contents.at(pos-1).isNumber()) {
+            // tooltips for numbers is pointless
+            return false;
+        }
+
+        while ((pos > 0) && isIdentChar(contents.at(pos-1)))
+            --pos;
+        if ((pos > 0) && ((contents.at(pos-1) == QLatin1Char('\''))
+                          || (contents.at(pos-1) == QLatin1Char('\"')))) {
+            // ignore string literals
+            return false;
+        }
+        int pos2 = linePosition - 1;
+        while ((pos2 < contents.size()-1) && isIdentChar(contents.at(pos2+1)))
+            ++pos2;
+        QString ident = contents.mid(pos, pos2 - pos + 1);
+
+        QStringList path;
+        path.append(ident);
+        while ((pos > 0) && (contents.at(pos-1) == QLatin1Char('.'))) {
+            --pos;
+            pos2 = pos;
+            while ((pos > 0) && isIdentChar(contents.at(pos-1)))
+                --pos;
+            path.prepend(contents.mid(pos, pos2 - pos));
+        }
+
+        if (!path.isEmpty()) {
+            int lineNumber = cursor.blockNumber() + d->editor->baseLineNumber();
+            emit toolTipRequest(he->globalPos(), lineNumber, path);
+        }
+    }
+    return false;
+}
+
+QT_END_NAMESPACE
+
+#include "moc_qscriptdebuggercodeview_p.cpp"
diff --git a/src/scripttools/debugging/qscriptdebuggercodeview_p.h b/src/scripttools/debugging/qscriptdebuggercodeview_p.h
new file mode 100644
index 0000000..034b207
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercodeview_p.h
@@ -0,0 +1,96 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCODEVIEW_P_H
+#define QSCRIPTDEBUGGERCODEVIEW_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscriptdebuggercodeviewinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerCodeViewPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerCodeView:
+    public QScriptDebuggerCodeViewInterface
+{
+    Q_OBJECT
+public:
+    QScriptDebuggerCodeView(QWidget *parent = 0);
+    ~QScriptDebuggerCodeView();
+
+    QString text() const;
+    void setText(const QString &text);
+
+    int cursorLineNumber() const;
+    void gotoLine(int lineNumber);
+
+    int find(const QString &exp, int options = 0);
+
+    void setExecutionLineNumber(int lineNumber, bool error);
+    void setExecutableLineNumbers(const QSet<int> &lineNumbers);
+
+    int baseLineNumber() const;
+    void setBaseLineNumber(int lineNumber);
+
+    void setBreakpoint(int lineNumber);
+    void deleteBreakpoint(int lineNumber);
+    void setBreakpointEnabled(int lineNumber, bool enable);
+
+    bool event(QEvent *e);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerCodeView)
+    Q_DISABLE_COPY(QScriptDebuggerCodeView)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggercodeviewinterface.cpp b/src/scripttools/debugging/qscriptdebuggercodeviewinterface.cpp
new file mode 100644
index 0000000..1f9a7ff
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercodeviewinterface.cpp
@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggercodeviewinterface_p.h"
+#include "qscriptdebuggercodeviewinterface_p_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QScriptDebuggerCodeViewInterfacePrivate::QScriptDebuggerCodeViewInterfacePrivate()
+{
+}
+
+QScriptDebuggerCodeViewInterfacePrivate::~QScriptDebuggerCodeViewInterfacePrivate()
+{
+}
+
+QScriptDebuggerCodeViewInterface::~QScriptDebuggerCodeViewInterface()
+{
+}
+
+QScriptDebuggerCodeViewInterface::QScriptDebuggerCodeViewInterface(
+    QScriptDebuggerCodeViewInterfacePrivate &dd,
+    QWidget *parent, Qt::WindowFlags flags)
+    : QWidget(dd, parent, flags)
+{
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggercodeviewinterface_p.h b/src/scripttools/debugging/qscriptdebuggercodeviewinterface_p.h
new file mode 100644
index 0000000..92e2129
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercodeviewinterface_p.h
@@ -0,0 +1,106 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCODEVIEWINTERFACE_P_H
+#define QSCRIPTDEBUGGERCODEVIEWINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/qwidget.h>
+
+QT_BEGIN_NAMESPACE
+
+class QPoint;
+class QStringList;
+
+class QScriptDebuggerCodeViewInterfacePrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerCodeViewInterface:
+    public QWidget
+{
+    Q_OBJECT
+public:
+    ~QScriptDebuggerCodeViewInterface();
+
+    virtual QString text() const = 0;
+    virtual void setText(const QString &text) = 0;
+
+    virtual int cursorLineNumber() const = 0;
+    virtual void gotoLine(int lineNumber) = 0;
+
+    virtual int find(const QString &exp, int options = 0) = 0;
+
+    virtual void setExecutionLineNumber(int lineNumber, bool error) = 0;
+    virtual void setExecutableLineNumbers(const QSet<int> &lineNumbers) = 0;
+
+    virtual int baseLineNumber() const = 0;
+    virtual void setBaseLineNumber(int lineNumber) = 0;
+
+    virtual void setBreakpoint(int lineNumber) = 0;
+    virtual void deleteBreakpoint(int lineNumber) = 0;
+    virtual void setBreakpointEnabled(int lineNumber, bool enable) = 0;
+
+Q_SIGNALS:
+    void breakpointToggleRequest(int lineNumber, bool on);
+    void breakpointEnableRequest(int lineNumber, bool enable);
+    void toolTipRequest(const QPoint &pos, int lineNumber, const QStringList &path);
+
+protected:
+    QScriptDebuggerCodeViewInterface(
+        QScriptDebuggerCodeViewInterfacePrivate &dd,
+        QWidget *parent, Qt::WindowFlags flags);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerCodeViewInterface)
+    Q_DISABLE_COPY(QScriptDebuggerCodeViewInterface)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggercodeviewinterface_p_p.h b/src/scripttools/debugging/qscriptdebuggercodeviewinterface_p_p.h
new file mode 100644
index 0000000..1225c19
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercodeviewinterface_p_p.h
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCODEVIEWINTERFACE_P_P_H
+#define QSCRIPTDEBUGGERCODEVIEWINTERFACE_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qwidget_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerCodeViewInterface;
+class QScriptDebuggerCodeViewInterfacePrivate
+    : public QWidgetPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerCodeViewInterface)
+public:
+    QScriptDebuggerCodeViewInterfacePrivate();
+    ~QScriptDebuggerCodeViewInterfacePrivate();
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggercodewidget.cpp b/src/scripttools/debugging/qscriptdebuggercodewidget.cpp
new file mode 100644
index 0000000..337153c
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercodewidget.cpp
@@ -0,0 +1,305 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggercodewidget_p.h"
+#include "qscriptdebuggercodewidgetinterface_p_p.h"
+#include "qscriptdebuggercodeview_p.h"
+#include "qscriptdebuggerscriptsmodel_p.h"
+#include "qscriptbreakpointsmodel_p.h"
+#include "qscripttooltipproviderinterface_p.h"
+
+#include <QtCore/qdebug.h>
+#include <QtGui/qboxlayout.h>
+#include <QtGui/qstackedwidget.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerCodeWidgetPrivate
+    : public QScriptDebuggerCodeWidgetInterfacePrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerCodeWidget)
+public:
+    QScriptDebuggerCodeWidgetPrivate();
+    ~QScriptDebuggerCodeWidgetPrivate();
+
+    qint64 scriptId(QScriptDebuggerCodeViewInterface *view) const;
+
+    // private slots
+    void _q_onBreakpointToggleRequest(int lineNumber, bool on);
+    void _q_onBreakpointEnableRequest(int lineNumber, bool enable);
+    void _q_onBreakpointsAboutToBeRemoved(const QModelIndex&, int, int);
+    void _q_onBreakpointsInserted(const QModelIndex&, int, int);
+    void _q_onBreakpointsDataChanged(const QModelIndex &, const QModelIndex &);
+    void _q_onScriptsChanged();
+    void _q_onToolTipRequest(const QPoint &pos, int lineNumber, const QStringList &path);
+
+    QScriptDebuggerScriptsModel *scriptsModel;
+    QStackedWidget *viewStack;
+    QHash<qint64, QScriptDebuggerCodeViewInterface*> viewHash;
+    QScriptBreakpointsModel *breakpointsModel;
+    QScriptToolTipProviderInterface *toolTipProvider;
+};
+
+QScriptDebuggerCodeWidgetPrivate::QScriptDebuggerCodeWidgetPrivate()
+{
+    scriptsModel = 0;
+    breakpointsModel = 0;
+    toolTipProvider = 0;
+}
+
+QScriptDebuggerCodeWidgetPrivate::~QScriptDebuggerCodeWidgetPrivate()
+{
+}
+
+qint64 QScriptDebuggerCodeWidgetPrivate::scriptId(QScriptDebuggerCodeViewInterface *view) const
+{
+    if (!view)
+        return -1;
+    return viewHash.key(view);
+}
+
+void QScriptDebuggerCodeWidgetPrivate::_q_onBreakpointToggleRequest(int lineNumber, bool on)
+{
+    QScriptDebuggerCodeViewInterface *view = qobject_cast<QScriptDebuggerCodeViewInterface*>(q_func()->sender());
+    qint64 sid = scriptId(view);
+    Q_ASSERT(sid != -1);
+    if (on) {
+        QScriptBreakpointData data(sid, lineNumber);
+        data.setFileName(scriptsModel->scriptData(sid).fileName());
+        breakpointsModel->setBreakpoint(data);
+    } else {
+        int bpid = breakpointsModel->resolveBreakpoint(sid, lineNumber);
+        if (bpid == -1)
+            bpid = breakpointsModel->resolveBreakpoint(scriptsModel->scriptData(sid).fileName(), lineNumber);
+        Q_ASSERT(bpid != -1);
+        breakpointsModel->deleteBreakpoint(bpid);
+    }
+}
+
+void QScriptDebuggerCodeWidgetPrivate::_q_onBreakpointEnableRequest(int lineNumber, bool enable)
+{
+    QScriptDebuggerCodeViewInterface *view = qobject_cast<QScriptDebuggerCodeViewInterface*>(q_func()->sender());
+    qint64 sid = scriptId(view);
+    int bpid = breakpointsModel->resolveBreakpoint(sid, lineNumber);
+    if (bpid == -1)
+        bpid = breakpointsModel->resolveBreakpoint(scriptsModel->scriptData(sid).fileName(), lineNumber);
+    Q_ASSERT(bpid != -1);
+    QScriptBreakpointData data = breakpointsModel->breakpointData(bpid);
+    data.setEnabled(enable);
+    breakpointsModel->setBreakpointData(bpid, data);
+}
+
+void QScriptDebuggerCodeWidgetPrivate::_q_onBreakpointsAboutToBeRemoved(
+    const QModelIndex &, int first, int last)
+{
+    for (int i = first; i <= last; ++i) {
+        QScriptBreakpointData data = breakpointsModel->breakpointDataAt(i);
+        qint64 scriptId = data.scriptId();
+        if (scriptId == -1) {
+            scriptId = scriptsModel->resolveScript(data.fileName());
+            if (scriptId == -1)
+                continue;
+        }
+        QScriptDebuggerCodeViewInterface *view = viewHash.value(scriptId);
+        if (!view)
+            continue;
+        view->deleteBreakpoint(data.lineNumber());
+    }
+}
+
+void QScriptDebuggerCodeWidgetPrivate::_q_onBreakpointsInserted(
+    const QModelIndex &, int first, int last)
+{
+    for (int i = first; i <= last; ++i) {
+        QScriptBreakpointData data = breakpointsModel->breakpointDataAt(i);
+        qint64 scriptId = data.scriptId();
+        if (scriptId == -1) {
+            scriptId = scriptsModel->resolveScript(data.fileName());
+            if (scriptId == -1)
+                continue;
+        }
+        QScriptDebuggerCodeViewInterface *view = viewHash.value(scriptId);
+        if (!view)
+            continue;
+        view->setBreakpoint(data.lineNumber());
+    }
+}
+
+void QScriptDebuggerCodeWidgetPrivate::_q_onBreakpointsDataChanged(
+    const QModelIndex &tl, const QModelIndex &br)
+{
+    for (int i = tl.row(); i <= br.row(); ++i) {
+        QScriptBreakpointData data = breakpointsModel->breakpointDataAt(i);
+        qint64 scriptId = data.scriptId();
+        if (scriptId == -1) {
+            scriptId = scriptsModel->resolveScript(data.fileName());
+            if (scriptId == -1)
+                continue;
+        }
+        QScriptDebuggerCodeViewInterface *view = viewHash.value(scriptId);
+        if (!view)
+            continue;
+        view->setBreakpointEnabled(data.lineNumber(), data.isEnabled());
+    }
+}
+
+void QScriptDebuggerCodeWidgetPrivate::_q_onScriptsChanged()
+{
+    // kill editors for scripts that have been removed
+    QHash<qint64, QScriptDebuggerCodeViewInterface*>::iterator it;
+    for (it = viewHash.begin(); it != viewHash.end(); ) {
+        if (!scriptsModel->scriptData(it.key()).isValid()) {
+            it = viewHash.erase(it);
+        } else
+            ++it;
+    }
+}
+
+void QScriptDebuggerCodeWidgetPrivate::_q_onToolTipRequest(
+    const QPoint &pos, int lineNumber, const QStringList &path)
+{
+    toolTipProvider->showToolTip(pos, /*frameIndex=*/-1, lineNumber, path);
+}
+
+QScriptDebuggerCodeWidget::QScriptDebuggerCodeWidget(QWidget *parent)
+    : QScriptDebuggerCodeWidgetInterface(*new QScriptDebuggerCodeWidgetPrivate, parent, 0)
+{
+    Q_D(QScriptDebuggerCodeWidget);
+    QVBoxLayout *vbox = new QVBoxLayout(this);
+    vbox->setMargin(0);
+    d->viewStack = new QStackedWidget();
+    vbox->addWidget(d->viewStack);
+}
+
+QScriptDebuggerCodeWidget::~QScriptDebuggerCodeWidget()
+{
+}
+
+QScriptDebuggerScriptsModel *QScriptDebuggerCodeWidget::scriptsModel() const
+{
+    Q_D(const QScriptDebuggerCodeWidget);
+    return d->scriptsModel;
+}
+
+void QScriptDebuggerCodeWidget::setScriptsModel(QScriptDebuggerScriptsModel *model)
+{
+    Q_D(QScriptDebuggerCodeWidget);
+    d->scriptsModel = model;
+    QObject::connect(model, SIGNAL(layoutChanged()),
+                     this, SLOT(_q_onScriptsChanged()));
+}
+
+qint64 QScriptDebuggerCodeWidget::currentScriptId() const
+{
+    Q_D(const QScriptDebuggerCodeWidget);
+    return d->scriptId(currentView());
+}
+
+void QScriptDebuggerCodeWidget::setCurrentScript(qint64 scriptId)
+{
+    Q_D(QScriptDebuggerCodeWidget);
+    if (scriptId == -1) {
+        // ### show "native script"
+        return;
+    }
+    QScriptDebuggerCodeViewInterface *view = d->viewHash.value(scriptId);
+    if (!view) {
+        Q_ASSERT(d->scriptsModel != 0);
+        QScriptScriptData data = d->scriptsModel->scriptData(scriptId);
+        if (!data.isValid())
+            return;
+        view = new QScriptDebuggerCodeView(); // ### use factory, so user can provide his own view
+        view->setBaseLineNumber(data.baseLineNumber());
+        view->setText(data.contents());
+        view->setExecutableLineNumbers(d->scriptsModel->executableLineNumbers(scriptId));
+        QObject::connect(view, SIGNAL(breakpointToggleRequest(int,bool)),
+                         this, SLOT(_q_onBreakpointToggleRequest(int,bool)));
+        QObject::connect(view, SIGNAL(breakpointEnableRequest(int,bool)),
+                         this, SLOT(_q_onBreakpointEnableRequest(int,bool)));
+        QObject::connect(view, SIGNAL(toolTipRequest(QPoint,int,QStringList)),
+                         this, SLOT(_q_onToolTipRequest(QPoint,int,QStringList)));
+        d->viewStack->addWidget(view);
+        d->viewHash.insert(scriptId, view);
+    }
+    d->viewStack->setCurrentWidget(view);
+}
+
+void QScriptDebuggerCodeWidget::invalidateExecutionLineNumbers()
+{
+    Q_D(QScriptDebuggerCodeWidget);
+    QHash<qint64, QScriptDebuggerCodeViewInterface*>::const_iterator it;
+    for (it = d->viewHash.constBegin(); it != d->viewHash.constEnd(); ++it)
+        it.value()->setExecutionLineNumber(-1, /*error=*/false);
+}
+
+QScriptBreakpointsModel *QScriptDebuggerCodeWidget::breakpointsModel() const
+{
+    Q_D(const QScriptDebuggerCodeWidget);
+    return d->breakpointsModel;
+}
+
+void QScriptDebuggerCodeWidget::setBreakpointsModel(QScriptBreakpointsModel *model)
+{
+    Q_D(QScriptDebuggerCodeWidget);
+    d->breakpointsModel = model;
+    QObject::connect(model, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)),
+                     this, SLOT(_q_onBreakpointsAboutToBeRemoved(QModelIndex,int,int)));
+    QObject::connect(model, SIGNAL(rowsInserted(QModelIndex,int,int)),
+                     this, SLOT(_q_onBreakpointsInserted(QModelIndex,int,int)));
+    QObject::connect(model, SIGNAL(dataChanged(QModelIndex,QModelIndex)),
+                     this, SLOT(_q_onBreakpointsDataChanged(QModelIndex,QModelIndex)));
+}
+
+void QScriptDebuggerCodeWidget::setToolTipProvider(QScriptToolTipProviderInterface *toolTipProvider)
+{
+    Q_D(QScriptDebuggerCodeWidget);
+    d->toolTipProvider = toolTipProvider;
+}
+
+QScriptDebuggerCodeViewInterface *QScriptDebuggerCodeWidget::currentView() const
+{
+    Q_D(const QScriptDebuggerCodeWidget);
+    return qobject_cast<QScriptDebuggerCodeViewInterface*>(d->viewStack->currentWidget());
+}
+
+QT_END_NAMESPACE
+
+#include "moc_qscriptdebuggercodewidget_p.cpp"
diff --git a/src/scripttools/debugging/qscriptdebuggercodewidget_p.h b/src/scripttools/debugging/qscriptdebuggercodewidget_p.h
new file mode 100644
index 0000000..8318052
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercodewidget_p.h
@@ -0,0 +1,99 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCODEWIDGET_P_H
+#define QSCRIPTDEBUGGERCODEWIDGET_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscriptdebuggercodewidgetinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerCodeWidgetPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerCodeWidget:
+    public QScriptDebuggerCodeWidgetInterface
+{
+    Q_OBJECT
+public:
+    QScriptDebuggerCodeWidget(QWidget *parent = 0);
+    ~QScriptDebuggerCodeWidget();
+
+    QScriptDebuggerScriptsModel *scriptsModel() const;
+    void setScriptsModel(QScriptDebuggerScriptsModel *model);
+
+    void setToolTipProvider(QScriptToolTipProviderInterface *toolTipProvider);
+
+    qint64 currentScriptId() const;
+    void setCurrentScript(qint64 scriptId);
+
+    void invalidateExecutionLineNumbers();
+
+    QScriptBreakpointsModel *breakpointsModel() const;
+    void setBreakpointsModel(QScriptBreakpointsModel *model);
+
+    QScriptDebuggerCodeViewInterface *currentView() const;
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerCodeWidget)
+    Q_DISABLE_COPY(QScriptDebuggerCodeWidget)
+
+    Q_PRIVATE_SLOT(d_func(), void _q_onBreakpointToggleRequest(int,bool))
+    Q_PRIVATE_SLOT(d_func(), void _q_onBreakpointEnableRequest(int,bool))
+    Q_PRIVATE_SLOT(d_func(), void _q_onBreakpointsAboutToBeRemoved(const QModelIndex &,int,int))
+    Q_PRIVATE_SLOT(d_func(), void _q_onBreakpointsInserted(const QModelIndex &,int,int))
+    Q_PRIVATE_SLOT(d_func(), void _q_onBreakpointsDataChanged(const QModelIndex &, const QModelIndex &))
+    Q_PRIVATE_SLOT(d_func(), void _q_onScriptsChanged())
+    Q_PRIVATE_SLOT(d_func(), void _q_onToolTipRequest(const QPoint &, int, const QStringList &))
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggercodewidgetinterface.cpp b/src/scripttools/debugging/qscriptdebuggercodewidgetinterface.cpp
new file mode 100644
index 0000000..86e814c
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercodewidgetinterface.cpp
@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggercodewidgetinterface_p.h"
+#include "qscriptdebuggercodewidgetinterface_p_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QScriptDebuggerCodeWidgetInterfacePrivate::QScriptDebuggerCodeWidgetInterfacePrivate()
+{
+}
+
+QScriptDebuggerCodeWidgetInterfacePrivate::~QScriptDebuggerCodeWidgetInterfacePrivate()
+{
+}
+
+QScriptDebuggerCodeWidgetInterface::~QScriptDebuggerCodeWidgetInterface()
+{
+}
+
+QScriptDebuggerCodeWidgetInterface::QScriptDebuggerCodeWidgetInterface(
+    QScriptDebuggerCodeWidgetInterfacePrivate &dd,
+    QWidget *parent, Qt::WindowFlags flags)
+    : QWidget(dd, parent, flags)
+{
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggercodewidgetinterface_p.h b/src/scripttools/debugging/qscriptdebuggercodewidgetinterface_p.h
new file mode 100644
index 0000000..d646424
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercodewidgetinterface_p.h
@@ -0,0 +1,101 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCODEWIDGETINTERFACE_P_H
+#define QSCRIPTDEBUGGERCODEWIDGETINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/qwidget.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerScriptsModel;
+class QScriptBreakpointsModel;
+class QScriptToolTipProviderInterface;
+
+class QScriptDebuggerCodeViewInterface;
+
+class QScriptDebuggerCodeWidgetInterfacePrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerCodeWidgetInterface:
+    public QWidget
+{
+    Q_OBJECT
+public:
+    ~QScriptDebuggerCodeWidgetInterface();
+
+    virtual QScriptDebuggerScriptsModel *scriptsModel() const = 0;
+    virtual void setScriptsModel(QScriptDebuggerScriptsModel *model) = 0;
+
+    virtual QScriptBreakpointsModel *breakpointsModel() const = 0;
+    virtual void setBreakpointsModel(QScriptBreakpointsModel *model) = 0;
+
+    virtual void setToolTipProvider(QScriptToolTipProviderInterface *toolTipProvider) = 0;
+
+    virtual qint64 currentScriptId() const = 0;
+    virtual void setCurrentScript(qint64 scriptId) = 0;
+
+    virtual void invalidateExecutionLineNumbers() = 0;
+
+    virtual QScriptDebuggerCodeViewInterface *currentView() const = 0;
+
+protected:
+    QScriptDebuggerCodeWidgetInterface(
+        QScriptDebuggerCodeWidgetInterfacePrivate &dd,
+        QWidget *parent, Qt::WindowFlags flags);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerCodeWidgetInterface)
+    Q_DISABLE_COPY(QScriptDebuggerCodeWidgetInterface)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggercodewidgetinterface_p_p.h b/src/scripttools/debugging/qscriptdebuggercodewidgetinterface_p_p.h
new file mode 100644
index 0000000..a635ab4
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercodewidgetinterface_p_p.h
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCODEWIDGETINTERFACE_P_P_H
+#define QSCRIPTDEBUGGERCODEWIDGETINTERFACE_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qwidget_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerCodeWidgetInterface;
+class QScriptDebuggerCodeWidgetInterfacePrivate
+    : public QWidgetPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerCodeWidgetInterface)
+public:
+    QScriptDebuggerCodeWidgetInterfacePrivate();
+    ~QScriptDebuggerCodeWidgetInterfacePrivate();
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggercommand.cpp b/src/scripttools/debugging/qscriptdebuggercommand.cpp
new file mode 100644
index 0000000..f026c93
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercommand.cpp
@@ -0,0 +1,709 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggercommand_p.h"
+#include "qscriptbreakpointdata_p.h"
+#include "qscriptdebuggervalue_p.h"
+
+#include <QtCore/qhash.h>
+#include <QtCore/qdatastream.h>
+#include <QtCore/qstringlist.h>
+
+Q_DECLARE_METATYPE(QScriptBreakpointData)
+Q_DECLARE_METATYPE(QScriptDebuggerValue)
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \since 4.5
+  \class QScriptDebuggerCommand
+  \internal
+
+  \brief The QScriptDebuggerCommand class represents a command issued to a QScriptDebuggerFrontend.
+
+  A debugger command is described by a command type and zero or more
+  attributes.  Such commands are generated internally by the
+  QScriptDebuggerFrontend class (through the scheduleXXX commands). A
+  command is typically passed on to a QScriptDebuggerCommandExecutor
+  that applies the command to a QScriptDebuggerBackend.
+*/
+
+class QScriptDebuggerCommandPrivate
+{
+public:
+    QScriptDebuggerCommandPrivate();
+    ~QScriptDebuggerCommandPrivate();
+
+    QScriptDebuggerCommand::Type type;
+    QHash<QScriptDebuggerCommand::Attribute, QVariant> attributes;
+};
+
+QScriptDebuggerCommandPrivate::QScriptDebuggerCommandPrivate()
+    : type(QScriptDebuggerCommand::None)
+{
+}
+
+QScriptDebuggerCommandPrivate::~QScriptDebuggerCommandPrivate()
+{
+}
+
+/*!
+  Constructs a QScriptDebuggerCommand of type None.
+*/
+QScriptDebuggerCommand::QScriptDebuggerCommand()
+    : d_ptr(new QScriptDebuggerCommandPrivate)
+{
+    d_ptr->type = None;
+}
+
+/*!
+  Constructs a QScriptDebuggerCommand of the given \a type, with no
+  attributes defined.
+*/
+QScriptDebuggerCommand::QScriptDebuggerCommand(Type type)
+    : d_ptr(new QScriptDebuggerCommandPrivate)
+{
+    d_ptr->type = type;
+}
+
+/*!
+  Constructs a QScriptDebuggerCommand that is a copy of the \a other
+  command.
+*/
+QScriptDebuggerCommand::QScriptDebuggerCommand(const QScriptDebuggerCommand &other)
+    : d_ptr(new QScriptDebuggerCommandPrivate)
+{
+    *d_ptr = *other.d_ptr;
+}
+
+/*!
+  Destroys this QScriptDebuggerCommand.
+*/
+QScriptDebuggerCommand::~QScriptDebuggerCommand()
+{
+}
+
+/*!
+  Assigns the \a other value to this QScriptDebuggerCommand.
+*/
+QScriptDebuggerCommand &QScriptDebuggerCommand::operator=(const QScriptDebuggerCommand &other)
+{
+    *d_ptr = *other.d_ptr;
+    return *this;
+}
+
+/*!
+  Returns the type of this command.
+*/
+QScriptDebuggerCommand::Type QScriptDebuggerCommand::type() const
+{
+    Q_D(const QScriptDebuggerCommand);
+    return d->type;
+}
+
+/*!
+  Returns the value of the given \a attribute, or \a defaultValue
+  if the attribute is not defined.
+*/
+QVariant QScriptDebuggerCommand::attribute(Attribute attribute,
+                                           const QVariant &defaultValue) const
+{
+    Q_D(const QScriptDebuggerCommand);
+    return d->attributes.value(attribute, defaultValue);
+}
+
+/*!
+  Sets the \a value of the given \a attribute.
+*/
+void QScriptDebuggerCommand::setAttribute(Attribute attribute,
+                                          const QVariant &value)
+{
+    Q_D(QScriptDebuggerCommand);
+    if (!value.isValid())
+        d->attributes.remove(attribute);
+    else
+        d->attributes[attribute] = value;
+}
+
+QHash<QScriptDebuggerCommand::Attribute, QVariant> QScriptDebuggerCommand::attributes() const
+{
+    Q_D(const QScriptDebuggerCommand);
+    return d->attributes;
+}
+
+/*!
+  Returns the FileName attribute of this command converted to a string.
+  This function is provided for convenience.
+
+  \sa attribute()
+*/
+QString QScriptDebuggerCommand::fileName() const
+{
+    Q_D(const QScriptDebuggerCommand);
+    return d->attributes.value(FileName).toString();
+}
+
+void QScriptDebuggerCommand::setFileName(const QString &fileName)
+{
+    Q_D(QScriptDebuggerCommand);
+    d->attributes[FileName] = fileName;
+}
+
+/*!
+  Returns the LineNumber attribute of this command converted to an int.
+  This function is provided for convenience.
+
+  \sa attribute()
+*/
+int QScriptDebuggerCommand::lineNumber() const
+{ 
+    Q_D(const QScriptDebuggerCommand);
+    return d->attributes.value(LineNumber, -1).toInt();
+}
+
+void QScriptDebuggerCommand::setLineNumber(int lineNumber)
+{
+    Q_D(QScriptDebuggerCommand);
+    d->attributes[LineNumber] = lineNumber;
+}
+
+/*!
+  Returns the ScriptID attribute of this command converted to a qint64.
+  This function is provided for convenience.
+
+  \sa attribute()
+*/
+qint64 QScriptDebuggerCommand::scriptId() const
+{
+    Q_D(const QScriptDebuggerCommand);
+    return d->attributes.value(ScriptID, -1).toLongLong();
+}
+
+void QScriptDebuggerCommand::setScriptId(qint64 id)
+{
+    Q_D(QScriptDebuggerCommand);
+    d->attributes[ScriptID] = id;
+}
+
+QString QScriptDebuggerCommand::program() const
+{
+    Q_D(const QScriptDebuggerCommand);
+    return d->attributes.value(Program).toString();
+}
+
+void QScriptDebuggerCommand::setProgram(const QString &program)
+{
+    Q_D(QScriptDebuggerCommand);
+    d->attributes[Program] = program;
+}
+
+int QScriptDebuggerCommand::breakpointId() const
+{
+    Q_D(const QScriptDebuggerCommand);
+    return d->attributes.value(BreakpointID, -1).toInt();
+}
+
+void QScriptDebuggerCommand::setBreakpointId(int id)
+{
+    Q_D(QScriptDebuggerCommand);
+    d->attributes[BreakpointID] = id;
+}
+
+QScriptBreakpointData QScriptDebuggerCommand::breakpointData() const
+{
+    Q_D(const QScriptDebuggerCommand);
+    return qvariant_cast<QScriptBreakpointData>(d->attributes.value(BreakpointData));
+}
+
+void QScriptDebuggerCommand::setBreakpointData(const QScriptBreakpointData &data)
+{
+    Q_D(QScriptDebuggerCommand);
+    d->attributes[BreakpointData] = QVariant::fromValue(data);
+}
+
+QScriptDebuggerValue QScriptDebuggerCommand::scriptValue() const
+{
+    Q_D(const QScriptDebuggerCommand);
+    return qvariant_cast<QScriptDebuggerValue>(d->attributes.value(ScriptValue));
+}
+
+void QScriptDebuggerCommand::setScriptValue(const QScriptDebuggerValue &value)
+{
+    Q_D(QScriptDebuggerCommand);
+    d->attributes[ScriptValue] = QVariant::fromValue(value);
+}
+
+int QScriptDebuggerCommand::contextIndex() const
+{
+    Q_D(const QScriptDebuggerCommand);
+    return d->attributes.value(ContextIndex, -1).toInt();
+}
+
+void QScriptDebuggerCommand::setContextIndex(int index)
+{
+    Q_D(QScriptDebuggerCommand);
+    d->attributes[ContextIndex] = index;
+}
+
+int QScriptDebuggerCommand::iteratorId() const
+{
+    Q_D(const QScriptDebuggerCommand);
+    return d->attributes.value(IteratorID, -1).toInt();
+}
+
+void QScriptDebuggerCommand::setIteratorId(int id)
+{
+    Q_D(QScriptDebuggerCommand);
+    d->attributes[IteratorID] = id;
+}
+
+QString QScriptDebuggerCommand::name() const
+{
+    Q_D(const QScriptDebuggerCommand);
+    return d->attributes.value(Name).toString();
+}
+
+void QScriptDebuggerCommand::setName(const QString &name)
+{
+    Q_D(QScriptDebuggerCommand);
+    d->attributes[Name] = name;
+}
+
+QScriptDebuggerValue QScriptDebuggerCommand::subordinateScriptValue() const
+{
+    Q_D(const QScriptDebuggerCommand);
+    return qvariant_cast<QScriptDebuggerValue>(d->attributes.value(SubordinateScriptValue));
+}
+
+void QScriptDebuggerCommand::setSubordinateScriptValue(const QScriptDebuggerValue &value)
+{
+    Q_D(QScriptDebuggerCommand);
+    d->attributes[SubordinateScriptValue] = QVariant::fromValue(value);
+}
+
+int QScriptDebuggerCommand::snapshotId() const
+{
+    Q_D(const QScriptDebuggerCommand);
+    return d->attributes.value(SnapshotID, -1).toInt();
+}
+
+void QScriptDebuggerCommand::setSnapshotId(int id)
+{
+    Q_D(QScriptDebuggerCommand);
+    d->attributes[SnapshotID] = id;
+}
+
+/*!
+  Returns true if this QScriptDebuggerCommand is equal to the \a other
+  command, otherwise returns false.
+*/
+bool QScriptDebuggerCommand::operator==(const QScriptDebuggerCommand &other) const
+{
+    Q_D(const QScriptDebuggerCommand);
+    const QScriptDebuggerCommandPrivate *od = other.d_func();
+    if (d == od)
+        return true;
+    if (!d || !od)
+        return false;
+    return ((d->type == od->type)
+            && (d->attributes == od->attributes));
+}
+
+/*!
+  Returns true if this QScriptDebuggerCommand is not equal to the \a
+  other command, otherwise returns false.
+*/
+bool QScriptDebuggerCommand::operator!=(const QScriptDebuggerCommand &other) const
+{
+    return !(*this == other);
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::interruptCommand()
+{
+    QScriptDebuggerCommand cmd(Interrupt);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::continueCommand()
+{
+    QScriptDebuggerCommand cmd(Continue);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::stepIntoCommand(int count)
+{
+    QScriptDebuggerCommand cmd(StepInto);
+    cmd.setAttribute(StepCount, count);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::stepOverCommand(int count)
+{
+    QScriptDebuggerCommand cmd(StepOver);
+    cmd.setAttribute(StepCount, count);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::stepOutCommand()
+{
+    QScriptDebuggerCommand cmd(StepOut);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::runToLocationCommand(const QString &fileName, int lineNumber)
+{
+    QScriptDebuggerCommand cmd(RunToLocation);
+    cmd.setFileName(fileName);
+    cmd.setLineNumber(lineNumber);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::runToLocationCommand(qint64 scriptId, int lineNumber)
+{
+    QScriptDebuggerCommand cmd(RunToLocationByID);
+    cmd.setScriptId(scriptId);
+    cmd.setLineNumber(lineNumber);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::forceReturnCommand(int contextIndex, const QScriptDebuggerValue &value)
+{
+    QScriptDebuggerCommand cmd(ForceReturn);
+    cmd.setContextIndex(contextIndex);
+    cmd.setScriptValue(value);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::resumeCommand()
+{
+    QScriptDebuggerCommand cmd(Resume);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::setBreakpointCommand(const QString &fileName, int lineNumber)
+{
+    QScriptDebuggerCommand cmd(SetBreakpoint);
+    cmd.setBreakpointData(QScriptBreakpointData(fileName, lineNumber));
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::setBreakpointCommand(const QScriptBreakpointData &data)
+{
+    QScriptDebuggerCommand cmd(SetBreakpoint);
+    cmd.setBreakpointData(data);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::deleteBreakpointCommand(int id)
+{
+    QScriptDebuggerCommand cmd(DeleteBreakpoint);
+    cmd.setBreakpointId(id);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::deleteAllBreakpointsCommand()
+{
+    QScriptDebuggerCommand cmd(DeleteAllBreakpoints);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::getBreakpointsCommand()
+{
+    QScriptDebuggerCommand cmd(GetBreakpoints);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::getBreakpointDataCommand(int id)
+{
+    QScriptDebuggerCommand cmd(GetBreakpointData);
+    cmd.setBreakpointId(id);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::setBreakpointDataCommand(int id, const QScriptBreakpointData &data)
+{
+    QScriptDebuggerCommand cmd(SetBreakpointData);
+    cmd.setBreakpointId(id);
+    cmd.setBreakpointData(data);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::getScriptsCommand()
+{
+    QScriptDebuggerCommand cmd(GetScripts);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::getScriptDataCommand(qint64 id)
+{
+    QScriptDebuggerCommand cmd(GetScriptData);
+    cmd.setScriptId(id);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::scriptsCheckpointCommand()
+{
+    QScriptDebuggerCommand cmd(ScriptsCheckpoint);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::getScriptsDeltaCommand()
+{
+    QScriptDebuggerCommand cmd(GetScriptsDelta);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::resolveScriptCommand(const QString &fileName)
+{
+    QScriptDebuggerCommand cmd(ResolveScript);
+    cmd.setFileName(fileName);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::getBacktraceCommand()
+{
+    QScriptDebuggerCommand cmd(GetBacktrace);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::getContextCountCommand()
+{
+    QScriptDebuggerCommand cmd(GetContextCount);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::getContextStateCommand(int contextIndex)
+{
+    QScriptDebuggerCommand cmd(GetContextState);
+    cmd.setContextIndex(contextIndex);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::getContextInfoCommand(int contextIndex)
+{
+    QScriptDebuggerCommand cmd(GetContextInfo);
+    cmd.setContextIndex(contextIndex);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::getContextIdCommand(int contextIndex)
+{
+    QScriptDebuggerCommand cmd(GetContextID);
+    cmd.setContextIndex(contextIndex);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::getThisObjectCommand(int contextIndex)
+{
+    QScriptDebuggerCommand cmd(GetThisObject);
+    cmd.setContextIndex(contextIndex);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::getActivationObjectCommand(int contextIndex)
+{
+    QScriptDebuggerCommand cmd(GetActivationObject);
+    cmd.setContextIndex(contextIndex);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::getScopeChainCommand(int contextIndex)
+{
+    QScriptDebuggerCommand cmd(GetScopeChain);
+    cmd.setContextIndex(contextIndex);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::contextsCheckpoint()
+{
+    QScriptDebuggerCommand cmd(ContextsCheckpoint);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::getPropertyExpressionValue(
+    int contextIndex, int lineNumber, const QStringList &path)
+{
+    QScriptDebuggerCommand cmd(GetPropertyExpressionValue);
+    cmd.setContextIndex(contextIndex);
+    cmd.setLineNumber(lineNumber);
+    cmd.setAttribute(UserAttribute, path);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::getCompletions(
+    int contextIndex, const QStringList &path)
+{
+    QScriptDebuggerCommand cmd(GetCompletions);
+    cmd.setContextIndex(contextIndex);
+    cmd.setAttribute(UserAttribute, path);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::newScriptObjectSnapshotCommand()
+{
+    QScriptDebuggerCommand cmd(NewScriptObjectSnapshot);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::scriptObjectSnapshotCaptureCommand(int id, const QScriptDebuggerValue &object)
+{
+    Q_ASSERT(object.type() == QScriptDebuggerValue::ObjectValue);
+    QScriptDebuggerCommand cmd(ScriptObjectSnapshotCapture);
+    cmd.setSnapshotId(id);
+    cmd.setScriptValue(object);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::deleteScriptObjectSnapshotCommand(int id)
+{
+    QScriptDebuggerCommand cmd(DeleteScriptObjectSnapshot);
+    cmd.setSnapshotId(id);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::newScriptValueIteratorCommand(const QScriptDebuggerValue &object)
+{
+    QScriptDebuggerCommand cmd(NewScriptValueIterator);
+    Q_ASSERT(object.type() == QScriptDebuggerValue::ObjectValue);
+    cmd.setScriptValue(object);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::getPropertiesByIteratorCommand(int id, int count)
+{
+    Q_UNUSED(count);
+    QScriptDebuggerCommand cmd(GetPropertiesByIterator);
+    cmd.setIteratorId(id);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::deleteScriptValueIteratorCommand(int id)
+{
+    QScriptDebuggerCommand cmd(DeleteScriptValueIterator);
+    cmd.setIteratorId(id);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::evaluateCommand(
+    int contextIndex, const QString &program, const QString &fileName, int lineNumber)
+{
+    QScriptDebuggerCommand cmd(Evaluate);
+    cmd.setContextIndex(contextIndex);
+    cmd.setProgram(program);
+    cmd.setFileName(fileName);
+    cmd.setLineNumber(lineNumber);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::scriptValueToStringCommand(const QScriptDebuggerValue &value)
+{
+    QScriptDebuggerCommand cmd(ScriptValueToString);
+    cmd.setScriptValue(value);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::setScriptValuePropertyCommand(
+    const QScriptDebuggerValue &object, const QString &name,
+    const QScriptDebuggerValue &value)
+{
+    QScriptDebuggerCommand cmd(SetScriptValueProperty);
+    cmd.setScriptValue(object);
+    cmd.setName(name);
+    cmd.setSubordinateScriptValue(value);
+    return cmd;
+}
+
+QScriptDebuggerCommand QScriptDebuggerCommand::clearExceptionsCommand()
+{
+    QScriptDebuggerCommand cmd(ClearExceptions);
+    return cmd;
+}
+
+/*!
+  \fn QDataStream &operator<<(QDataStream &stream, const QScriptDebuggerCommand &command)
+  \relates QScriptDebuggerCommand
+
+  Writes the given \a command to the specified \a stream.
+*/
+QDataStream &operator<<(QDataStream &out, const QScriptDebuggerCommand &command)
+{
+    const QScriptDebuggerCommandPrivate *d = command.d_ptr.data();
+    out << (quint32)d->type;
+    out << (qint32)d->attributes.size();
+    QHash<QScriptDebuggerCommand::Attribute, QVariant>::const_iterator it;
+    for (it = d->attributes.constBegin(); it != d->attributes.constEnd(); ++it) {
+        out << (quint32)it.key();
+        out << it.value();
+    }
+    return out;
+}
+
+/*!
+  \fn QDataStream &operator>>(QDataStream &stream, QScriptDebuggerCommand &command)
+  \relates QScriptDebuggerCommand
+
+  Reads a QScriptDebuggerCommand from the specified \a stream into the
+  given \a command.
+*/
+QDataStream &operator>>(QDataStream &in, QScriptDebuggerCommand &command)
+{
+    QScriptDebuggerCommandPrivate *d = command.d_ptr.data();
+
+    quint32 type;
+    in >> type;
+    d->type = QScriptDebuggerCommand::Type(type);
+
+    qint32 attribCount;
+    in >> attribCount;
+    QHash<QScriptDebuggerCommand::Attribute, QVariant> attribs;
+    for (qint32 i = 0; i < attribCount; ++i) {
+        quint32 key;
+        in >> key;
+        QVariant value;
+        in >> value;
+        attribs[QScriptDebuggerCommand::Attribute(key)] = value;
+    }
+    d->attributes = attribs;
+
+    return in;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggercommand_p.h b/src/scripttools/debugging/qscriptdebuggercommand_p.h
new file mode 100644
index 0000000..b8c6e4d
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercommand_p.h
@@ -0,0 +1,268 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCOMMAND_P_H
+#define QSCRIPTDEBUGGERCOMMAND_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+#include <QtCore/qscopedpointer.h>
+#include <QtCore/qhash.h>
+#include <QtCore/qvariant.h>
+
+QT_BEGIN_NAMESPACE
+
+class QDataStream;
+class QScriptBreakpointData;
+class QScriptDebuggerValue;
+
+class QScriptDebuggerCommandPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerCommand
+{
+public:
+    friend Q_AUTOTEST_EXPORT QDataStream &operator<<(QDataStream &, const QScriptDebuggerCommand &);
+    friend Q_AUTOTEST_EXPORT QDataStream &operator>>(QDataStream &, QScriptDebuggerCommand &);
+
+    enum Type {
+        None,
+
+        Interrupt,
+        Continue,
+        StepInto,
+        StepOver,
+        StepOut,
+        RunToLocation,
+        RunToLocationByID,
+        ForceReturn,
+        Resume,
+
+        SetBreakpoint,
+        DeleteBreakpoint,
+        DeleteAllBreakpoints,
+        GetBreakpoints,
+        GetBreakpointData,
+        SetBreakpointData,
+
+        GetScripts,
+        GetScriptData,
+        ScriptsCheckpoint,
+        GetScriptsDelta,
+        ResolveScript,
+
+        GetBacktrace,
+        GetContextCount,
+        GetContextInfo,
+        GetContextState,
+        GetContextID,
+        GetThisObject,
+        GetActivationObject,
+        GetScopeChain,
+        ContextsCheckpoint,
+        GetPropertyExpressionValue,
+        GetCompletions,
+
+        NewScriptObjectSnapshot,
+        ScriptObjectSnapshotCapture,
+        DeleteScriptObjectSnapshot,
+
+        NewScriptValueIterator,
+        GetPropertiesByIterator,
+        DeleteScriptValueIterator,
+
+        Evaluate,
+
+        SetScriptValueProperty,
+        ScriptValueToString,
+
+        ClearExceptions,
+
+        UserCommand = 1000,
+        MaxUserCommand = 32767
+    };
+
+    enum Attribute {
+        ScriptID,
+        FileName,
+        LineNumber,
+        Program,
+        BreakpointID,
+        BreakpointData,
+        ContextIndex,
+        ScriptValue,
+        StepCount,
+        IteratorID,
+        Name,
+        SubordinateScriptValue,
+        SnapshotID,
+        UserAttribute = 1000,
+        MaxUserAttribute = 32767
+    };
+
+    QScriptDebuggerCommand();
+    QScriptDebuggerCommand(Type type);
+    QScriptDebuggerCommand(const QScriptDebuggerCommand &other);
+    ~QScriptDebuggerCommand();
+
+    Type type() const;
+
+    QVariant attribute(Attribute attribute, const QVariant &defaultValue = QVariant()) const;
+    void setAttribute(Attribute attribute, const QVariant &value);
+    QHash<Attribute, QVariant> attributes() const;
+
+    QString fileName() const;
+    void setFileName(const QString &fileName);
+
+    int lineNumber() const;
+    void setLineNumber(int lineNumber);
+
+    qint64 scriptId() const;
+    void setScriptId(qint64 id);
+
+    QString program() const;
+    void setProgram(const QString &program);
+
+    int breakpointId() const;
+    void setBreakpointId(int id);
+
+    QScriptBreakpointData breakpointData() const;
+    void setBreakpointData(const QScriptBreakpointData &data);
+
+    QScriptDebuggerValue scriptValue() const;
+    void setScriptValue(const QScriptDebuggerValue &value);
+
+    int contextIndex() const;
+    void setContextIndex(int index);
+
+    int iteratorId() const;
+    void setIteratorId(int id);
+
+    QString name() const;
+    void setName(const QString &name);
+
+    QScriptDebuggerValue subordinateScriptValue() const;
+    void setSubordinateScriptValue(const QScriptDebuggerValue &value);
+
+    int snapshotId() const;
+    void setSnapshotId(int id);
+
+    QScriptDebuggerCommand &operator=(const QScriptDebuggerCommand &other);
+
+    bool operator==(const QScriptDebuggerCommand &other) const;
+    bool operator!=(const QScriptDebuggerCommand &other) const;
+
+    static QScriptDebuggerCommand interruptCommand();
+    static QScriptDebuggerCommand continueCommand();
+    static QScriptDebuggerCommand stepIntoCommand(int count = 1);
+    static QScriptDebuggerCommand stepOverCommand(int count = 1);
+    static QScriptDebuggerCommand stepOutCommand();
+    static QScriptDebuggerCommand runToLocationCommand(const QString &fileName, int lineNumber);
+    static QScriptDebuggerCommand runToLocationCommand(qint64 scriptId, int lineNumber);
+    static QScriptDebuggerCommand forceReturnCommand(int contextIndex, const QScriptDebuggerValue &value);
+    static QScriptDebuggerCommand resumeCommand();
+
+    static QScriptDebuggerCommand setBreakpointCommand(const QString &fileName, int lineNumber);
+    static QScriptDebuggerCommand setBreakpointCommand(const QScriptBreakpointData &data);
+    static QScriptDebuggerCommand deleteBreakpointCommand(int id);
+    static QScriptDebuggerCommand deleteAllBreakpointsCommand();
+    static QScriptDebuggerCommand getBreakpointsCommand();
+    static QScriptDebuggerCommand getBreakpointDataCommand(int id);
+    static QScriptDebuggerCommand setBreakpointDataCommand(int id, const QScriptBreakpointData &data);
+
+    static QScriptDebuggerCommand getScriptsCommand();
+    static QScriptDebuggerCommand getScriptDataCommand(qint64 id);
+    static QScriptDebuggerCommand scriptsCheckpointCommand();
+    static QScriptDebuggerCommand getScriptsDeltaCommand();
+    static QScriptDebuggerCommand resolveScriptCommand(const QString &fileName);
+
+    static QScriptDebuggerCommand getBacktraceCommand();
+    static QScriptDebuggerCommand getContextCountCommand();
+    static QScriptDebuggerCommand getContextStateCommand(int contextIndex);
+    static QScriptDebuggerCommand getContextInfoCommand(int contextIndex);
+    static QScriptDebuggerCommand getContextIdCommand(int contextIndex);
+    static QScriptDebuggerCommand getThisObjectCommand(int contextIndex);
+    static QScriptDebuggerCommand getActivationObjectCommand(int contextIndex);
+    static QScriptDebuggerCommand getScopeChainCommand(int contextIndex);
+    static QScriptDebuggerCommand contextsCheckpoint();
+    static QScriptDebuggerCommand getPropertyExpressionValue(int contextIndex, int lineNumber,
+                                                             const QStringList &path);
+    static QScriptDebuggerCommand getCompletions(int contextIndex, const QStringList &path);
+
+    static QScriptDebuggerCommand newScriptObjectSnapshotCommand();
+    static QScriptDebuggerCommand scriptObjectSnapshotCaptureCommand(int id, const QScriptDebuggerValue &object);
+    static QScriptDebuggerCommand deleteScriptObjectSnapshotCommand(int id);
+
+    static QScriptDebuggerCommand newScriptValueIteratorCommand(const QScriptDebuggerValue &object);
+    static QScriptDebuggerCommand getPropertiesByIteratorCommand(int id, int count);
+    static QScriptDebuggerCommand deleteScriptValueIteratorCommand(int id);
+
+    static QScriptDebuggerCommand evaluateCommand(int contextIndex, const QString &program,
+                                                  const QString &fileName = QString(),
+                                                  int lineNumber = 1);
+
+    static QScriptDebuggerCommand setScriptValuePropertyCommand(const QScriptDebuggerValue &object,
+                                                                const QString &name,
+                                                                const QScriptDebuggerValue &value);
+    static QScriptDebuggerCommand scriptValueToStringCommand(const QScriptDebuggerValue &value);
+
+    static QScriptDebuggerCommand clearExceptionsCommand();
+
+private:
+    QScopedPointer<QScriptDebuggerCommandPrivate> d_ptr;
+
+    Q_DECLARE_PRIVATE(QScriptDebuggerCommand)
+};
+
+Q_AUTOTEST_EXPORT QDataStream &operator<<(QDataStream &, const QScriptDebuggerCommand &);
+Q_AUTOTEST_EXPORT QDataStream &operator>>(QDataStream &, QScriptDebuggerCommand &);
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggercommandexecutor.cpp b/src/scripttools/debugging/qscriptdebuggercommandexecutor.cpp
new file mode 100644
index 0000000..adc5d6d
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercommandexecutor.cpp
@@ -0,0 +1,522 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggercommandexecutor_p.h"
+
+#include "qscriptdebuggerbackend_p.h"
+#include "qscriptdebuggercommand_p.h"
+#include "qscriptdebuggerresponse_p.h"
+#include "qscriptdebuggervalue_p.h"
+#include "qscriptdebuggervalueproperty_p.h"
+#include "qscriptbreakpointdata_p.h"
+#include "qscriptobjectsnapshot_p.h"
+#include "qscriptdebuggerobjectsnapshotdelta_p.h"
+
+#include <QtCore/qstringlist.h>
+#include <QtScript/qscriptengine.h>
+#include <QtScript/qscriptcontextinfo.h>
+#include <QtScript/qscriptvalueiterator.h>
+#include <QtCore/qdebug.h>
+
+Q_DECLARE_METATYPE(QScriptScriptsDelta)
+Q_DECLARE_METATYPE(QScriptDebuggerValueProperty)
+Q_DECLARE_METATYPE(QScriptDebuggerValuePropertyList)
+Q_DECLARE_METATYPE(QScriptDebuggerObjectSnapshotDelta)
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \since 4.5
+  \class QScriptDebuggerCommandExecutor
+  \internal
+
+  \brief The QScriptDebuggerCommandExecutor applies debugger commands to a back-end.
+
+  The execute() function takes a command (typically produced by a
+  QScriptDebuggerFrontend) and applies it to a QScriptDebuggerBackend.
+
+  \sa QScriptDebuggerCommmand
+*/
+
+class QScriptDebuggerCommandExecutorPrivate
+{
+public:
+    QScriptDebuggerCommandExecutorPrivate();
+    ~QScriptDebuggerCommandExecutorPrivate();
+};
+
+QScriptDebuggerCommandExecutorPrivate::QScriptDebuggerCommandExecutorPrivate()
+{
+}
+
+QScriptDebuggerCommandExecutorPrivate::~QScriptDebuggerCommandExecutorPrivate()
+{
+}
+
+QScriptDebuggerCommandExecutor::QScriptDebuggerCommandExecutor()
+    : d_ptr(new QScriptDebuggerCommandExecutorPrivate())
+{
+}
+
+QScriptDebuggerCommandExecutor::~QScriptDebuggerCommandExecutor()
+{
+}
+
+static bool isPrefixOf(const QString &prefix, const QString &what)
+{
+    return ((what.length() > prefix.length())
+            && what.startsWith(prefix));
+}
+
+/*!
+  Applies the given \a command to the given \a backend.
+*/
+QScriptDebuggerResponse QScriptDebuggerCommandExecutor::execute(
+    QScriptDebuggerBackend *backend,
+    const QScriptDebuggerCommand &command)
+{
+    QScriptDebuggerResponse response;
+    switch (command.type()) {
+    case QScriptDebuggerCommand::None:
+        break;
+
+    case QScriptDebuggerCommand::Interrupt:
+        backend->interruptEvaluation();
+        break;
+
+    case QScriptDebuggerCommand::Continue:
+        if (backend->engine()->isEvaluating()) {
+            backend->continueEvalution();
+            response.setAsync(true);
+        }
+        break;
+
+    case QScriptDebuggerCommand::StepInto: {
+        QVariant attr = command.attribute(QScriptDebuggerCommand::StepCount);
+        int count = attr.isValid() ? attr.toInt() : 1;
+        backend->stepInto(count);
+        response.setAsync(true);
+    }   break;
+
+    case QScriptDebuggerCommand::StepOver: {
+        QVariant attr = command.attribute(QScriptDebuggerCommand::StepCount);
+        int count = attr.isValid() ? attr.toInt() : 1;
+        backend->stepOver(count);
+        response.setAsync(true);
+    }   break;
+
+    case QScriptDebuggerCommand::StepOut:
+        backend->stepOut();
+        response.setAsync(true);
+        break;
+
+    case QScriptDebuggerCommand::RunToLocation:
+        backend->runToLocation(command.fileName(), command.lineNumber());
+        response.setAsync(true);
+        break;
+
+    case QScriptDebuggerCommand::RunToLocationByID:
+        backend->runToLocation(command.scriptId(), command.lineNumber());
+        response.setAsync(true);
+        break;
+
+    case QScriptDebuggerCommand::ForceReturn: {
+        int contextIndex = command.contextIndex();
+        QScriptDebuggerValue value = command.scriptValue();
+        QScriptEngine *engine = backend->engine();
+        QScriptValue realValue = value.toScriptValue(engine);
+        backend->returnToCaller(contextIndex, realValue);
+        response.setAsync(true);
+    }   break;
+
+    case QScriptDebuggerCommand::Resume:
+        backend->resume();
+        response.setAsync(true);
+        break;
+
+    case QScriptDebuggerCommand::SetBreakpoint: {
+        QScriptBreakpointData data = command.breakpointData();
+        if (!data.isValid())
+            data = QScriptBreakpointData(command.fileName(), command.lineNumber());
+        int id = backend->setBreakpoint(data);
+        response.setResult(id);
+    }   break;
+
+    case QScriptDebuggerCommand::DeleteBreakpoint: {
+        int id = command.breakpointId();
+        if (!backend->deleteBreakpoint(id))
+            response.setError(QScriptDebuggerResponse::InvalidBreakpointID);
+    }   break;
+
+    case QScriptDebuggerCommand::DeleteAllBreakpoints:
+        backend->deleteAllBreakpoints();
+        break;
+
+    case QScriptDebuggerCommand::GetBreakpoints: {
+        QScriptBreakpointMap bps = backend->breakpoints();
+        if (!bps.isEmpty())
+            response.setResult(bps);
+    }   break;
+
+    case QScriptDebuggerCommand::GetBreakpointData: {
+        int id = command.breakpointId();
+        QScriptBreakpointData data = backend->breakpointData(id);
+        if (data.isValid())
+            response.setResult(data);
+        else
+            response.setError(QScriptDebuggerResponse::InvalidBreakpointID);
+    }   break;
+
+    case QScriptDebuggerCommand::SetBreakpointData: {
+        int id = command.breakpointId();
+        QScriptBreakpointData data = command.breakpointData();
+        if (!backend->setBreakpointData(id, data))
+            response.setError(QScriptDebuggerResponse::InvalidBreakpointID);
+    }   break;
+
+    case QScriptDebuggerCommand::GetScripts: {
+        QScriptScriptMap scripts = backend->scripts();
+        if (!scripts.isEmpty())
+            response.setResult(scripts);
+    }   break;
+
+    case QScriptDebuggerCommand::GetScriptData: {
+        qint64 id = command.scriptId();
+        QScriptScriptData data = backend->scriptData(id);
+        if (data.isValid())
+            response.setResult(data);
+        else
+            response.setError(QScriptDebuggerResponse::InvalidScriptID);
+    }   break;
+
+    case QScriptDebuggerCommand::ScriptsCheckpoint:
+        backend->scriptsCheckpoint();
+        response.setResult(QVariant::fromValue(backend->scriptsDelta()));
+        break;
+
+    case QScriptDebuggerCommand::GetScriptsDelta:
+        response.setResult(QVariant::fromValue(backend->scriptsDelta()));
+        break;
+
+    case QScriptDebuggerCommand::ResolveScript:
+        response.setResult(backend->resolveScript(command.fileName()));
+        break;
+
+    case QScriptDebuggerCommand::GetBacktrace:
+        response.setResult(backend->backtrace());
+        break;
+
+    case QScriptDebuggerCommand::GetContextCount:
+        response.setResult(backend->contextCount());
+        break;
+
+    case QScriptDebuggerCommand::GetContextState: {
+        QScriptContext *ctx = backend->context(command.contextIndex());
+        if (ctx)
+            response.setResult(static_cast<int>(ctx->state()));
+        else
+            response.setError(QScriptDebuggerResponse::InvalidContextIndex);
+    }   break;
+
+    case QScriptDebuggerCommand::GetContextID: {
+        int idx = command.contextIndex();
+        if ((idx >= 0) && (idx < backend->contextCount()))
+            response.setResult(backend->contextIds()[idx]);
+        else
+            response.setError(QScriptDebuggerResponse::InvalidContextIndex);
+    }   break;
+
+    case QScriptDebuggerCommand::GetContextInfo: {
+        QScriptContext *ctx = backend->context(command.contextIndex());
+        if (ctx)
+            response.setResult(QScriptContextInfo(ctx));
+        else
+            response.setError(QScriptDebuggerResponse::InvalidContextIndex);
+    }   break;
+
+    case QScriptDebuggerCommand::GetThisObject: {
+        QScriptContext *ctx = backend->context(command.contextIndex());
+        if (ctx)
+            response.setResult(ctx->thisObject());
+        else
+            response.setError(QScriptDebuggerResponse::InvalidContextIndex);
+    }   break;
+
+    case QScriptDebuggerCommand::GetActivationObject: {
+        QScriptContext *ctx = backend->context(command.contextIndex());
+        if (ctx)
+            response.setResult(ctx->activationObject());
+        else
+            response.setError(QScriptDebuggerResponse::InvalidContextIndex);
+    }   break;
+
+    case QScriptDebuggerCommand::GetScopeChain: {
+        QScriptContext *ctx = backend->context(command.contextIndex());
+        if (ctx) {
+            QScriptDebuggerValueList dest;
+            QScriptValueList src = ctx->scopeChain();
+            for (int i = 0; i < src.size(); ++i)
+                dest.append(src.at(i));
+            response.setResult(dest);
+        } else {
+            response.setError(QScriptDebuggerResponse::InvalidContextIndex);
+        }
+    }   break;
+
+    case QScriptDebuggerCommand::ContextsCheckpoint: {
+        response.setResult(QVariant::fromValue(backend->contextsCheckpoint()));
+    }   break;
+
+    case QScriptDebuggerCommand::GetPropertyExpressionValue: {
+        QScriptContext *ctx = backend->context(command.contextIndex());
+        int lineNumber = command.lineNumber();
+        QVariant attr = command.attribute(QScriptDebuggerCommand::UserAttribute);
+        QStringList path = attr.toStringList();
+        if (!ctx || path.isEmpty())
+            break;
+        QScriptContextInfo ctxInfo(ctx);
+        if (ctx->callee().isValid()
+            && ((lineNumber < ctxInfo.functionStartLineNumber())
+                || (lineNumber > ctxInfo.functionEndLineNumber()))) {
+            break;
+        }
+        QScriptValueList objects;
+        int pathIndex = 0;
+        if (path.at(0) == QLatin1String("this")) {
+            objects.append(ctx->thisObject());
+            ++pathIndex;
+        } else {
+            objects << ctx->scopeChain();
+        }
+        for (int i = 0; i < objects.size(); ++i) {
+            QScriptValue val = objects.at(i);
+            for (int j = pathIndex; val.isValid() && (j < path.size()); ++j) {
+                val = val.property(path.at(j));
+            }
+            if (val.isValid()) {
+                bool hadException = (ctx->state() == QScriptContext::ExceptionState);
+                QString str = val.toString();
+                if (!hadException && backend->engine()->hasUncaughtException())
+                    backend->engine()->clearExceptions();
+                response.setResult(str);
+                break;
+            }
+        }
+    }   break;
+
+    case QScriptDebuggerCommand::GetCompletions: {
+        QScriptContext *ctx = backend->context(command.contextIndex());
+        QVariant attr = command.attribute(QScriptDebuggerCommand::UserAttribute);
+        QStringList path = attr.toStringList();
+        if (!ctx || path.isEmpty())
+            break;
+        QScriptValueList objects;
+        QString prefix = path.last();
+        QSet<QString> matches;
+        if (path.size() > 1) {
+            const QString &topLevelIdent = path.at(0);
+            QScriptValue obj;
+            if (topLevelIdent == QLatin1String("this")) {
+                obj = ctx->thisObject();
+            } else {
+                QScriptValueList scopeChain;
+                scopeChain = ctx->scopeChain();
+                for (int i = 0; i < scopeChain.size(); ++i) {
+                    QScriptValue oo = scopeChain.at(i).property(topLevelIdent);
+                    if (oo.isObject()) {
+                        obj = oo;
+                        break;
+                    }
+                }
+            }
+            for (int i = 1; obj.isObject() && (i < path.size()-1); ++i)
+                obj = obj.property(path.at(i));
+            if (obj.isValid())
+                objects.append(obj);
+        } else {
+            objects << ctx->scopeChain();
+            QStringList keywords;
+            keywords.append(QString::fromLatin1("this"));
+            keywords.append(QString::fromLatin1("true"));
+            keywords.append(QString::fromLatin1("false"));
+            keywords.append(QString::fromLatin1("null"));
+            for (int i = 0; i < keywords.size(); ++i) {
+                const QString &kwd = keywords.at(i);
+                if (isPrefixOf(prefix, kwd))
+                    matches.insert(kwd);
+            }
+        }
+
+        for (int i = 0; i < objects.size(); ++i) {
+            QScriptValue obj = objects.at(i);
+            while (obj.isObject()) {
+                QScriptValueIterator it(obj);
+                while (it.hasNext()) {
+                    it.next();
+                    QString propertyName = it.name();
+                    if (isPrefixOf(prefix, propertyName))
+                        matches.insert(propertyName);
+                }
+                obj = obj.prototype();
+            }
+        }
+        QStringList matchesList = matches.toList();
+        qStableSort(matchesList);
+        response.setResult(matchesList);
+    }   break;
+
+    case QScriptDebuggerCommand::NewScriptObjectSnapshot: {
+        int id = backend->newScriptObjectSnapshot();
+        response.setResult(id);
+    }   break;
+
+    case QScriptDebuggerCommand::ScriptObjectSnapshotCapture: {
+        int id = command.snapshotId();
+        QScriptObjectSnapshot *snap = backend->scriptObjectSnapshot(id);
+        Q_ASSERT(snap != 0);
+        QScriptDebuggerValue object = command.scriptValue();
+        Q_ASSERT(object.type() == QScriptDebuggerValue::ObjectValue);
+        QScriptEngine *engine = backend->engine();
+        QScriptValue realObject = object.toScriptValue(engine);
+        Q_ASSERT(realObject.isObject());
+        QScriptObjectSnapshot::Delta delta = snap->capture(realObject);
+        QScriptDebuggerObjectSnapshotDelta result;
+        result.removedProperties = delta.removedProperties;
+        bool didIgnoreExceptions = backend->ignoreExceptions();
+        backend->setIgnoreExceptions(true);
+        for (int i = 0; i < delta.changedProperties.size(); ++i) {
+            const QScriptValueProperty &src = delta.changedProperties.at(i);
+            bool hadException = engine->hasUncaughtException();
+            QString str = src.value().toString();
+            if (!hadException && engine->hasUncaughtException())
+                engine->clearExceptions();
+            QScriptDebuggerValueProperty dest(src.name(), src.value(), str, src.flags());
+            result.changedProperties.append(dest);
+        }
+        for (int j = 0; j < delta.addedProperties.size(); ++j) {
+            const QScriptValueProperty &src = delta.addedProperties.at(j);
+            bool hadException = engine->hasUncaughtException();
+            QString str = src.value().toString();
+            if (!hadException && engine->hasUncaughtException())
+                engine->clearExceptions();
+            QScriptDebuggerValueProperty dest(src.name(), src.value(), str, src.flags());
+            result.addedProperties.append(dest);
+        }
+        backend->setIgnoreExceptions(didIgnoreExceptions);
+        response.setResult(QVariant::fromValue(result));
+    }   break;
+
+    case QScriptDebuggerCommand::DeleteScriptObjectSnapshot: {
+        int id = command.snapshotId();
+        backend->deleteScriptObjectSnapshot(id);
+    }   break;
+
+    case QScriptDebuggerCommand::NewScriptValueIterator: {
+        QScriptDebuggerValue object = command.scriptValue();
+        Q_ASSERT(object.type() == QScriptDebuggerValue::ObjectValue);
+        QScriptEngine *engine = backend->engine();
+        QScriptValue realObject = object.toScriptValue(engine);
+        Q_ASSERT(realObject.isObject());
+        int id = backend->newScriptValueIterator(realObject);
+        response.setResult(id);
+    }   break;
+
+    case QScriptDebuggerCommand::GetPropertiesByIterator: {
+        int id = command.iteratorId();
+        int count = 1000;
+        QScriptValueIterator *it = backend->scriptValueIterator(id);
+        Q_ASSERT(it != 0);
+        QScriptDebuggerValuePropertyList props;
+        for (int i = 0; (i < count) && it->hasNext(); ++i) {
+            it->next();
+            QString name = it->name();
+            QScriptValue value = it->value();
+            QString valueAsString = value.toString();
+            QScriptValue::PropertyFlags flags = it->flags();
+            QScriptDebuggerValueProperty prp(name, value, valueAsString, flags);
+            props.append(prp);
+        }
+        response.setResult(props);
+    }   break;
+
+    case QScriptDebuggerCommand::DeleteScriptValueIterator: {
+        int id = command.iteratorId();
+        backend->deleteScriptValueIterator(id);
+    }   break;
+
+    case QScriptDebuggerCommand::Evaluate: {
+        int contextIndex = command.contextIndex();
+        QString program = command.program();
+        QString fileName = command.fileName();
+        int lineNumber = command.lineNumber();
+        backend->evaluate(contextIndex, program, fileName, lineNumber);
+        response.setAsync(true);
+    }   break;
+
+    case QScriptDebuggerCommand::ScriptValueToString: {
+        QScriptDebuggerValue value = command.scriptValue();
+        QScriptEngine *engine = backend->engine();
+        QScriptValue realValue = value.toScriptValue(engine);
+        response.setResult(realValue.toString());
+    }   break;
+
+    case QScriptDebuggerCommand::SetScriptValueProperty: {
+        QScriptDebuggerValue object = command.scriptValue();
+        QScriptEngine *engine = backend->engine();
+        QScriptValue realObject = object.toScriptValue(engine);
+        QScriptDebuggerValue value = command.subordinateScriptValue();
+        QScriptValue realValue = value.toScriptValue(engine);
+        QString name = command.name();
+        realObject.setProperty(name, realValue);
+    }   break;
+
+    case QScriptDebuggerCommand::ClearExceptions:
+        backend->engine()->clearExceptions();
+        break;
+
+    case QScriptDebuggerCommand::UserCommand:
+    case QScriptDebuggerCommand::MaxUserCommand:
+        break;
+    }
+    return response;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggercommandexecutor_p.h b/src/scripttools/debugging/qscriptdebuggercommandexecutor_p.h
new file mode 100644
index 0000000..632fbc0
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercommandexecutor_p.h
@@ -0,0 +1,87 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCOMMANDEXECUTOR_P_H
+#define QSCRIPTDEBUGGERCOMMANDEXECUTOR_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+#include <QtCore/qscopedpointer.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerBackend;
+class QScriptDebuggerCommand;
+class QScriptDebuggerResponse;
+
+class QScriptDebuggerCommandExecutorPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerCommandExecutor
+{
+public:
+    QScriptDebuggerCommandExecutor();
+    virtual ~QScriptDebuggerCommandExecutor();
+
+    virtual QScriptDebuggerResponse execute(
+        QScriptDebuggerBackend *backend,
+        const QScriptDebuggerCommand &command);
+
+protected:
+    QScriptDebuggerCommandExecutor(QScriptDebuggerCommandExecutorPrivate &dd);
+    QScopedPointer<QScriptDebuggerCommandExecutorPrivate> d_ptr;
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerCommandExecutor)
+    Q_DISABLE_COPY(QScriptDebuggerCommandExecutor)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggercommandschedulerfrontend.cpp b/src/scripttools/debugging/qscriptdebuggercommandschedulerfrontend.cpp
new file mode 100644
index 0000000..0fa5283
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercommandschedulerfrontend.cpp
@@ -0,0 +1,320 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggercommandschedulerfrontend_p.h"
+#include "qscriptdebuggercommandschedulerinterface_p.h"
+#include "qscriptdebuggercommand_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QScriptDebuggerCommandSchedulerFrontend::QScriptDebuggerCommandSchedulerFrontend(
+    QScriptDebuggerCommandSchedulerInterface *scheduler,
+    QScriptDebuggerResponseHandlerInterface *responseHandler)
+    : m_scheduler(scheduler), m_responseHandler(responseHandler)
+{
+}
+
+QScriptDebuggerCommandSchedulerFrontend::~QScriptDebuggerCommandSchedulerFrontend()
+{
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleCommand(const QScriptDebuggerCommand &command)
+{
+    return m_scheduler->scheduleCommand(command, m_responseHandler);
+}
+
+/*!
+  Instructs the front-end to break at the next script statement, and
+  returns a unique identifier associated with this command.
+
+  When the next script statement is encountered, the client will be
+  notified, and the front-end will be ready to accept commands.
+
+  \sa scheduleContinue()
+*/
+int QScriptDebuggerCommandSchedulerFrontend::scheduleInterrupt()
+{
+    return scheduleCommand(QScriptDebuggerCommand::interruptCommand());
+}
+
+/*!
+  Instructs the front-end to continue evaluation, and returns a unique
+  identifier associated with this command.
+
+  \sa scheduleBreak()
+*/
+int QScriptDebuggerCommandSchedulerFrontend::scheduleContinue()
+{
+    return scheduleCommand(QScriptDebuggerCommand::continueCommand());
+}
+
+/*!
+  Instructs the front-end to step into the next script statement, and
+  returns a unique identifier associated with this command.
+
+  Evaluation will automatically be continued, and the client()'s event()
+  function will be called when the statement has been stepped into.
+*/
+int QScriptDebuggerCommandSchedulerFrontend::scheduleStepInto(int count)
+{
+    return scheduleCommand(QScriptDebuggerCommand::stepIntoCommand(count));
+}
+
+/*!
+  Instructs the front-end to step over the next script statement, and
+  returns a unique identifier associated with this command.
+
+  Evaluation will automatically be continued, and the client()'s event()
+  function will be called when the statement has been stepped over.
+*/
+int QScriptDebuggerCommandSchedulerFrontend::scheduleStepOver(int count)
+{
+    return scheduleCommand(QScriptDebuggerCommand::stepOverCommand(count));
+}
+
+/*!
+  Instructs the front-end to step out of the current script function, and
+  returns a unique identifier associated with this command.
+
+  Evaluation will automatically be continued, and the client()'s
+  event() function will be called when the script function has been
+  stepped out of.
+*/
+int QScriptDebuggerCommandSchedulerFrontend::scheduleStepOut()
+{
+    return scheduleCommand(QScriptDebuggerCommand::stepOutCommand());
+}
+
+/*!
+  Instructs the front-end to continue evaluation until the location
+  specified by the given \a fileName and \a lineNumber is reached.
+*/
+int QScriptDebuggerCommandSchedulerFrontend::scheduleRunToLocation(const QString &fileName, int lineNumber)
+{
+    return scheduleCommand(QScriptDebuggerCommand::runToLocationCommand(fileName, lineNumber));
+}
+
+/*!
+  Instructs the front-end to continue evaluation until the location
+  specified by the given \a scriptId and \a lineNumber is reached.
+*/
+int QScriptDebuggerCommandSchedulerFrontend::scheduleRunToLocation(qint64 scriptId, int lineNumber)
+{
+    return scheduleCommand(QScriptDebuggerCommand::runToLocationCommand(scriptId, lineNumber));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleForceReturn(int contextIndex, const QScriptDebuggerValue &value)
+{
+    return scheduleCommand(QScriptDebuggerCommand::forceReturnCommand(contextIndex, value));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleSetBreakpoint(const QString &fileName, int lineNumber)
+{
+    return scheduleCommand(QScriptDebuggerCommand::setBreakpointCommand(fileName, lineNumber));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleSetBreakpoint(const QScriptBreakpointData &data)
+{
+    return scheduleCommand(QScriptDebuggerCommand::setBreakpointCommand(data));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleDeleteBreakpoint(int id)
+{
+    return scheduleCommand(QScriptDebuggerCommand::deleteBreakpointCommand(id));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleDeleteAllBreakpoints()
+{
+    return scheduleCommand(QScriptDebuggerCommand::deleteAllBreakpointsCommand());
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetBreakpoints()
+{
+    return scheduleCommand(QScriptDebuggerCommand::getBreakpointsCommand());
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetBreakpointData(int id)
+{
+    return scheduleCommand(QScriptDebuggerCommand::getBreakpointDataCommand(id));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleSetBreakpointData(int id, const QScriptBreakpointData &data)
+{
+    return scheduleCommand(QScriptDebuggerCommand::setBreakpointDataCommand(id, data));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetScripts()
+{
+    return scheduleCommand(QScriptDebuggerCommand::getScriptsCommand());
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetScriptData(qint64 id)
+{
+    return scheduleCommand(QScriptDebuggerCommand::getScriptDataCommand(id));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleScriptsCheckpoint()
+{
+    return scheduleCommand(QScriptDebuggerCommand::scriptsCheckpointCommand());
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetScriptsDelta()
+{
+    return scheduleCommand(QScriptDebuggerCommand::getScriptsDeltaCommand());
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleResolveScript(const QString &fileName)
+{
+    return scheduleCommand(QScriptDebuggerCommand::resolveScriptCommand(fileName));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetBacktrace()
+{
+    return scheduleCommand(QScriptDebuggerCommand::getBacktraceCommand());
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetContextCount()
+{
+    return scheduleCommand(QScriptDebuggerCommand::getContextCountCommand());
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetContextState(int contextIndex)
+{
+    return scheduleCommand(QScriptDebuggerCommand::getContextStateCommand(contextIndex));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetContextInfo(int contextIndex)
+{
+    return scheduleCommand(QScriptDebuggerCommand::getContextInfoCommand(contextIndex));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetContextId(int contextIndex)
+{
+    return scheduleCommand(QScriptDebuggerCommand::getContextIdCommand(contextIndex));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetThisObject(int contextIndex)
+{
+    return scheduleCommand(QScriptDebuggerCommand::getThisObjectCommand(contextIndex));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetActivationObject(int contextIndex)
+{
+    return scheduleCommand(QScriptDebuggerCommand::getActivationObjectCommand(contextIndex));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetScopeChain(int contextIndex)
+{
+    return scheduleCommand(QScriptDebuggerCommand::getScopeChainCommand(contextIndex));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleContextsCheckpoint()
+{
+    return scheduleCommand(QScriptDebuggerCommand::contextsCheckpoint());
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetPropertyExpressionValue(
+    int contextIndex, int lineNumber, const QStringList &path)
+{
+    return scheduleCommand(QScriptDebuggerCommand::getPropertyExpressionValue(contextIndex, lineNumber, path));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetCompletions(int contextIndex, const QStringList &path)
+{
+    return scheduleCommand(QScriptDebuggerCommand::getCompletions(contextIndex, path));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleEvaluate(int contextIndex,
+                                              const QString &program,
+                                              const QString &fileName,
+                                              int lineNumber)
+{
+    return scheduleCommand(QScriptDebuggerCommand::evaluateCommand(contextIndex, program, fileName, lineNumber));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleNewScriptValueIterator(const QScriptDebuggerValue &object)
+{
+    return scheduleCommand(QScriptDebuggerCommand::newScriptValueIteratorCommand(object));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleGetPropertiesByIterator(int id, int count)
+{
+    return scheduleCommand(QScriptDebuggerCommand::getPropertiesByIteratorCommand(id, count));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleDeleteScriptValueIterator(int id)
+{
+    return scheduleCommand(QScriptDebuggerCommand::deleteScriptValueIteratorCommand(id));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleScriptValueToString(const QScriptDebuggerValue &value)
+{
+    return scheduleCommand(QScriptDebuggerCommand::scriptValueToStringCommand(value));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleSetScriptValueProperty(const QScriptDebuggerValue &object,
+                                                            const QString &name,
+                                                            const QScriptDebuggerValue &value)
+{
+    return scheduleCommand(QScriptDebuggerCommand::setScriptValuePropertyCommand(object, name, value));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleClearExceptions()
+{
+    return scheduleCommand(QScriptDebuggerCommand::clearExceptionsCommand());
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleNewScriptObjectSnapshot()
+{
+    return scheduleCommand(QScriptDebuggerCommand::newScriptObjectSnapshotCommand());
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleScriptObjectSnapshotCapture(int id, const QScriptDebuggerValue &object)
+{
+    return scheduleCommand(QScriptDebuggerCommand::scriptObjectSnapshotCaptureCommand(id, object));
+}
+
+int QScriptDebuggerCommandSchedulerFrontend::scheduleDeleteScriptObjectSnapshot(int id)
+{
+    return scheduleCommand(QScriptDebuggerCommand::deleteScriptObjectSnapshotCommand(id));
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggercommandschedulerfrontend_p.h b/src/scripttools/debugging/qscriptdebuggercommandschedulerfrontend_p.h
new file mode 100644
index 0000000..bc3a608
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercommandschedulerfrontend_p.h
@@ -0,0 +1,148 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCOMMANDSCHEDULERFRONTEND_P_H
+#define QSCRIPTDEBUGGERCOMMANDSCHEDULERFRONTEND_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+#include <QtCore/qstring.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerCommandSchedulerInterface;
+class QScriptDebuggerResponseHandlerInterface;
+class QScriptDebuggerCommand;
+class QScriptDebuggerValue;
+class QScriptBreakpointData;
+
+class Q_AUTOTEST_EXPORT QScriptDebuggerCommandSchedulerFrontend
+{
+public:
+    QScriptDebuggerCommandSchedulerFrontend(
+        QScriptDebuggerCommandSchedulerInterface *scheduler,
+        QScriptDebuggerResponseHandlerInterface *responseHandler);
+    ~QScriptDebuggerCommandSchedulerFrontend();
+
+     // execution control
+     int scheduleInterrupt();
+     int scheduleContinue();
+     int scheduleStepInto(int count = 1);
+     int scheduleStepOver(int count = 1);
+     int scheduleStepOut();
+     int scheduleRunToLocation(const QString &fileName, int lineNumber);
+     int scheduleRunToLocation(qint64 scriptId, int lineNumber);
+     int scheduleForceReturn(int contextIndex, const QScriptDebuggerValue &value);
+
+     // breakpoints
+     int scheduleSetBreakpoint(const QString &fileName, int lineNumber);
+     int scheduleSetBreakpoint(const QScriptBreakpointData &data);
+     int scheduleDeleteBreakpoint(int id);
+     int scheduleDeleteAllBreakpoints();
+     int scheduleGetBreakpoints();
+     int scheduleGetBreakpointData(int id);
+     int scheduleSetBreakpointData(int id, const QScriptBreakpointData &data);
+
+     // scripts
+     int scheduleGetScripts();
+     int scheduleGetScriptData(qint64 id);
+     int scheduleScriptsCheckpoint();
+     int scheduleGetScriptsDelta();
+     int scheduleResolveScript(const QString &fileName);
+
+     // stack
+     int scheduleGetBacktrace();
+     int scheduleGetContextCount();
+     int scheduleGetContextState(int contextIndex);
+     int scheduleGetContextInfo(int contextIndex);
+     int scheduleGetContextId(int contextIndex);
+     int scheduleGetThisObject(int contextIndex);
+     int scheduleGetActivationObject(int contextIndex);
+     int scheduleGetScopeChain(int contextIndex);
+     int scheduleContextsCheckpoint();
+     int scheduleGetPropertyExpressionValue(int contextIndex, int lineNumber,
+                                            const QStringList &path);
+     int scheduleGetCompletions(int contextIndex, const QStringList &path);
+
+     // iteration
+     int scheduleNewScriptValueIterator(const QScriptDebuggerValue &object);
+     int scheduleGetPropertiesByIterator(int id, int count);
+     int scheduleDeleteScriptValueIterator(int id);
+
+     // evaluation
+     int scheduleEvaluate(int contextIndex, const QString &program,
+                          const QString &fileName = QString(),
+                          int lineNumber = 1);
+
+     int scheduleScriptValueToString(const QScriptDebuggerValue &value);
+     int scheduleSetScriptValueProperty(const QScriptDebuggerValue &object,
+                                        const QString &name,
+                                        const QScriptDebuggerValue &value);
+
+     int scheduleClearExceptions();
+
+     int scheduleNewScriptObjectSnapshot();
+     int scheduleScriptObjectSnapshotCapture(int id, const QScriptDebuggerValue &object);
+     int scheduleDeleteScriptObjectSnapshot(int id);
+
+private:
+    int scheduleCommand(const QScriptDebuggerCommand &command);
+
+    QScriptDebuggerCommandSchedulerInterface *m_scheduler;
+    QScriptDebuggerResponseHandlerInterface *m_responseHandler;
+
+    Q_DISABLE_COPY(QScriptDebuggerCommandSchedulerFrontend)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggercommandschedulerinterface_p.h b/src/scripttools/debugging/qscriptdebuggercommandschedulerinterface_p.h
new file mode 100644
index 0000000..3779efa
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercommandschedulerinterface_p.h
@@ -0,0 +1,75 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCOMMANDSCHEDULERINTERFACE_P_H
+#define QSCRIPTDEBUGGERCOMMANDSCHEDULERINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerCommand;
+class QScriptDebuggerResponseHandlerInterface;
+
+class Q_AUTOTEST_EXPORT QScriptDebuggerCommandSchedulerInterface
+{
+public:
+    virtual ~QScriptDebuggerCommandSchedulerInterface() {}
+
+    virtual int scheduleCommand(
+        const QScriptDebuggerCommand &command,
+        QScriptDebuggerResponseHandlerInterface *responseHandler) = 0;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggercommandschedulerjob.cpp b/src/scripttools/debugging/qscriptdebuggercommandschedulerjob.cpp
new file mode 100644
index 0000000..f9d9bfb
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercommandschedulerjob.cpp
@@ -0,0 +1,82 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggercommandschedulerjob_p.h"
+#include "qscriptdebuggercommandschedulerjob_p_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QScriptDebuggerCommandSchedulerJobPrivate::QScriptDebuggerCommandSchedulerJobPrivate()
+{
+}
+
+QScriptDebuggerCommandSchedulerJobPrivate::~QScriptDebuggerCommandSchedulerJobPrivate()
+{
+}
+
+QScriptDebuggerCommandSchedulerJob::QScriptDebuggerCommandSchedulerJob(
+    QScriptDebuggerCommandSchedulerInterface *commandScheduler)
+    : QScriptDebuggerJob(*new QScriptDebuggerCommandSchedulerJobPrivate)
+{
+    Q_D(QScriptDebuggerCommandSchedulerJob);
+    d->commandScheduler = commandScheduler;
+}
+
+QScriptDebuggerCommandSchedulerJob::~QScriptDebuggerCommandSchedulerJob()
+{
+}
+
+QScriptDebuggerCommandSchedulerJob::QScriptDebuggerCommandSchedulerJob(
+    QScriptDebuggerCommandSchedulerJobPrivate &dd,
+    QScriptDebuggerCommandSchedulerInterface *commandScheduler)
+    : QScriptDebuggerJob(dd)
+{
+    Q_D(QScriptDebuggerCommandSchedulerJob);
+    d->commandScheduler = commandScheduler;
+}
+
+QScriptDebuggerCommandSchedulerInterface *QScriptDebuggerCommandSchedulerJob::commandScheduler() const
+{
+    Q_D(const QScriptDebuggerCommandSchedulerJob);
+    return d->commandScheduler;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggercommandschedulerjob_p.h b/src/scripttools/debugging/qscriptdebuggercommandschedulerjob_p.h
new file mode 100644
index 0000000..0c6784e
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercommandschedulerjob_p.h
@@ -0,0 +1,87 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCOMMANDSCHEDULERJOB_P_H
+#define QSCRIPTDEBUGGERCOMMANDSCHEDULERJOB_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscriptdebuggerjob_p.h"
+
+#include "qscriptdebuggerresponsehandlerinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerCommandSchedulerInterface;
+
+class QScriptDebuggerCommandSchedulerJobPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerCommandSchedulerJob
+    : public QScriptDebuggerJob,
+      public QScriptDebuggerResponseHandlerInterface
+{
+public:
+    QScriptDebuggerCommandSchedulerJob(QScriptDebuggerCommandSchedulerInterface *commandScheduler);
+    ~QScriptDebuggerCommandSchedulerJob();
+
+    QScriptDebuggerCommandSchedulerInterface *commandScheduler() const;
+
+protected:
+    QScriptDebuggerCommandSchedulerJob(
+        QScriptDebuggerCommandSchedulerJobPrivate &dd,
+        QScriptDebuggerCommandSchedulerInterface *commandScheduler);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerCommandSchedulerJob)
+    Q_DISABLE_COPY(QScriptDebuggerCommandSchedulerJob)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggercommandschedulerjob_p_p.h b/src/scripttools/debugging/qscriptdebuggercommandschedulerjob_p_p.h
new file mode 100644
index 0000000..ebd1d6e
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggercommandschedulerjob_p_p.h
@@ -0,0 +1,76 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCOMMANDSCHEDULERJOB_P_P_H
+#define QSCRIPTDEBUGGERCOMMANDSCHEDULERJOB_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscriptdebuggerjob_p_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerCommandSchedulerInterface;
+
+class QScriptDebuggerCommandSchedulerJob;
+class QScriptDebuggerCommandSchedulerJobPrivate
+    : public QScriptDebuggerJobPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerCommandSchedulerJob)
+public:
+    QScriptDebuggerCommandSchedulerJobPrivate();
+    ~QScriptDebuggerCommandSchedulerJobPrivate();
+
+    QScriptDebuggerCommandSchedulerInterface *commandScheduler;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerconsole.cpp b/src/scripttools/debugging/qscriptdebuggerconsole.cpp
new file mode 100644
index 0000000..bab3c9f
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsole.cpp
@@ -0,0 +1,605 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerconsole_p.h"
+#include "qscriptdebuggerconsolecommandjob_p.h"
+#include "qscriptdebuggerconsolecommandmanager_p.h"
+#include "qscriptdebuggerscriptedconsolecommand_p.h"
+#include "qscriptmessagehandlerinterface_p.h"
+#include "qscriptbreakpointdata_p.h"
+#include "qscriptdebuggerresponse_p.h"
+#include "qscriptdebuggervalueproperty_p.h"
+#include "qscriptscriptdata_p.h"
+
+#include <QtCore/qdir.h>
+#include <QtCore/qfileinfo.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qstringlist.h>
+#include <QtCore/qdebug.h>
+#include <QtScript/qscriptcontextinfo.h>
+#include <QtScript/qscriptengine.h>
+
+Q_DECLARE_METATYPE(QScriptDebuggerResponse)
+Q_DECLARE_METATYPE(QScriptBreakpointData)
+Q_DECLARE_METATYPE(QScriptBreakpointMap)
+Q_DECLARE_METATYPE(QScriptScriptData)
+Q_DECLARE_METATYPE(QScriptScriptMap)
+Q_DECLARE_METATYPE(QScriptContextInfo)
+Q_DECLARE_METATYPE(QScriptDebuggerValue)
+Q_DECLARE_METATYPE(QScriptDebuggerValueProperty)
+Q_DECLARE_METATYPE(QScriptDebuggerValuePropertyList)
+Q_DECLARE_METATYPE(QScriptDebuggerConsoleCommand*)
+Q_DECLARE_METATYPE(QScriptDebuggerConsoleCommandList)
+Q_DECLARE_METATYPE(QScriptDebuggerConsoleCommandGroupData)
+Q_DECLARE_METATYPE(QScriptDebuggerConsoleCommandGroupMap)
+
+QT_BEGIN_NAMESPACE
+
+static QScriptValue debuggerResponseToScriptValue(QScriptEngine *eng, const QScriptDebuggerResponse &in)
+{
+    QScriptValue out = eng->newObject();
+    out.setProperty(QString::fromLatin1("result"), eng->toScriptValue(in.result()));
+    out.setProperty(QString::fromLatin1("error"), QScriptValue(eng, in.error()));
+    out.setProperty(QString::fromLatin1("async"), QScriptValue(eng, in.async()));
+    return out;
+}
+
+static void debuggerResponseFromScriptValue(const QScriptValue &, QScriptDebuggerResponse &)
+{
+    Q_ASSERT(0);
+}
+
+static QScriptValue breakpointDataToScriptValue(QScriptEngine *eng, const QScriptBreakpointData &in)
+{
+    QScriptValue out = eng->newObject();
+    out.setProperty(QString::fromLatin1("scriptId"), QScriptValue(eng, qsreal(in.scriptId())));
+    out.setProperty(QString::fromLatin1("fileName"), QScriptValue(eng, in.fileName()));
+    out.setProperty(QString::fromLatin1("lineNumber"), QScriptValue(eng, in.lineNumber()));
+    out.setProperty(QString::fromLatin1("enabled"), QScriptValue(eng, in.isEnabled()));
+    out.setProperty(QString::fromLatin1("singleShot"), QScriptValue(eng, in.isSingleShot()));
+    out.setProperty(QString::fromLatin1("ignoreCount"), QScriptValue(eng, in.ignoreCount()));
+    out.setProperty(QString::fromLatin1("condition"), QScriptValue(eng, in.condition()));
+    return out;
+}
+
+static void breakpointDataFromScriptValue(const QScriptValue &in, QScriptBreakpointData &out)
+{
+    QScriptValue scriptId = in.property(QString::fromLatin1("scriptId"));
+    if (scriptId.isValid())
+        out.setScriptId((qint64)scriptId.toNumber());
+    out.setFileName(in.property(QString::fromLatin1("fileName")).toString());
+    out.setLineNumber(in.property(QString::fromLatin1("lineNumber")).toInt32());
+    QScriptValue enabled = in.property(QString::fromLatin1("enabled"));
+    if (enabled.isValid())
+        out.setEnabled(enabled.toBoolean());
+    QScriptValue singleShot = in.property(QString::fromLatin1("singleShot"));
+    if (singleShot.isValid())
+        out.setSingleShot(singleShot.toBoolean());
+    out.setIgnoreCount(in.property(QString::fromLatin1("ignoreCount")).toInt32());
+    out.setCondition(in.property(QString::fromLatin1("condition")).toString());
+}
+
+static QScriptValue breakpointMapToScriptValue(QScriptEngine *eng, const QScriptBreakpointMap &in)
+{
+    QScriptValue out = eng->newObject();
+    QScriptBreakpointMap::const_iterator it;
+    for (it = in.constBegin(); it != in.constEnd(); ++it) {
+        out.setProperty(QString::number(it.key()), eng->toScriptValue(it.value()));
+    }
+    return out;
+}
+
+static void breakpointMapFromScriptValue(const QScriptValue &, QScriptBreakpointMap &)
+{
+    Q_ASSERT(0);
+}
+
+static QScriptValue scriptDataToScriptValue(QScriptEngine *eng, const QScriptScriptData &in)
+{
+    QScriptValue out = eng->newObject();
+    out.setProperty(QString::fromLatin1("contents"), QScriptValue(eng, in.contents()));
+    out.setProperty(QString::fromLatin1("fileName"), QScriptValue(eng, in.fileName()));
+    out.setProperty(QString::fromLatin1("baseLineNumber"), QScriptValue(eng, in.baseLineNumber()));
+    return out;
+}
+
+static void scriptDataFromScriptValue(const QScriptValue &in, QScriptScriptData &out)
+{
+    QString contents = in.property(QString::fromLatin1("contents")).toString();
+    QString fileName = in.property(QString::fromLatin1("fileName")).toString();
+    int baseLineNumber = in.property(QString::fromLatin1("baseLineNumber")).toInt32();
+    QScriptScriptData tmp(contents, fileName, baseLineNumber);
+    out = tmp;
+}
+
+static QScriptValue scriptMapToScriptValue(QScriptEngine *eng, const QScriptScriptMap &in)
+{
+    QScriptValue out = eng->newObject();
+    QScriptScriptMap::const_iterator it;
+    for (it = in.constBegin(); it != in.constEnd(); ++it) {
+        out.setProperty(QString::number(it.key()), eng->toScriptValue(it.value()));
+    }
+    return out;
+}
+
+static void scriptMapFromScriptValue(const QScriptValue &, QScriptScriptMap &)
+{
+    Q_ASSERT(0);
+}
+
+static QScriptValue consoleCommandToScriptValue(
+    QScriptEngine *eng, QScriptDebuggerConsoleCommand* const &in)
+{
+    if (!in)
+        return eng->undefinedValue();
+    QScriptValue out = eng->newObject();
+    out.setProperty(QString::fromLatin1("name"), QScriptValue(eng, in->name()));
+    out.setProperty(QString::fromLatin1("group"), QScriptValue(eng, in->group()));
+    out.setProperty(QString::fromLatin1("shortDescription"), QScriptValue(eng, in->shortDescription()));
+    out.setProperty(QString::fromLatin1("longDescription"), QScriptValue(eng, in->longDescription()));
+    out.setProperty(QString::fromLatin1("aliases"), eng->toScriptValue(in->aliases()));
+    out.setProperty(QString::fromLatin1("seeAlso"), eng->toScriptValue(in->seeAlso()));
+    return out;
+}
+
+static void consoleCommandFromScriptValue(
+    const QScriptValue &, QScriptDebuggerConsoleCommand* &)
+{
+    Q_ASSERT(0);
+}
+
+static QScriptValue consoleCommandGroupDataToScriptValue(
+    QScriptEngine *eng, const QScriptDebuggerConsoleCommandGroupData &in)
+{
+    QScriptValue out = eng->newObject();
+    out.setProperty(QString::fromLatin1("longDescription"), QScriptValue(eng, in.longDescription()));
+    out.setProperty(QString::fromLatin1("shortDescription"), QScriptValue(eng, in.shortDescription()));
+    return out;
+}
+
+static void consoleCommandGroupDataFromScriptValue(
+    const QScriptValue &, QScriptDebuggerConsoleCommandGroupData &)
+{
+    Q_ASSERT(0);
+}
+
+static QScriptValue consoleCommandGroupMapToScriptValue(
+    QScriptEngine *eng, const QScriptDebuggerConsoleCommandGroupMap &in)
+{
+    QScriptValue out = eng->newObject();
+    QScriptDebuggerConsoleCommandGroupMap::const_iterator it;
+    for (it = in.constBegin(); it != in.constEnd(); ++it) {
+        out.setProperty(it.key(), eng->toScriptValue(it.value()));
+    }
+    return out;
+}
+
+static void consoleCommandGroupMapFromScriptValue(
+    const QScriptValue &, QScriptDebuggerConsoleCommandGroupMap &)
+{
+    Q_ASSERT(0);
+}
+
+static QScriptValue contextInfoToScriptValue(QScriptEngine *eng, const QScriptContextInfo &in)
+{
+    QScriptValue out = eng->newObject();
+    out.setProperty(QString::fromLatin1("scriptId"), QScriptValue(eng, qsreal(in.scriptId())));
+    out.setProperty(QString::fromLatin1("fileName"), QScriptValue(eng, in.fileName()));
+    out.setProperty(QString::fromLatin1("lineNumber"), QScriptValue(eng, in.lineNumber()));
+    out.setProperty(QString::fromLatin1("columnNumber"), QScriptValue(eng, in.columnNumber()));
+    out.setProperty(QString::fromLatin1("functionName"), QScriptValue(eng, in.functionName()));
+    return out;
+}
+
+static void contextInfoFromScriptValue(const QScriptValue &, QScriptContextInfo &)
+{
+    Q_ASSERT(0);
+}
+
+static QScriptValue debuggerScriptValuePropertyToScriptValue(QScriptEngine *eng, const QScriptDebuggerValueProperty &in)
+{
+    QScriptValue out = eng->newObject();
+    out.setProperty(QString::fromLatin1("name"), QScriptValue(eng, in.name()));
+    out.setProperty(QString::fromLatin1("value"), eng->toScriptValue(in.value()));
+    out.setProperty(QString::fromLatin1("valueAsString"), QScriptValue(eng, in.valueAsString()));
+    out.setProperty(QString::fromLatin1("flags"), QScriptValue(eng, static_cast<int>(in.flags())));
+    return out;
+}
+
+static void debuggerScriptValuePropertyFromScriptValue(const QScriptValue &in, QScriptDebuggerValueProperty &out)
+{
+    QString name = in.property(QString::fromLatin1("name")).toString();
+    QScriptDebuggerValue value = qscriptvalue_cast<QScriptDebuggerValue>(in.property(QString::fromLatin1("value")));
+    QString valueAsString = in.property(QString::fromLatin1("valueAsString")).toString();
+    int flags = in.property(QString::fromLatin1("flags")).toInt32();
+    QScriptDebuggerValueProperty tmp(name, value, valueAsString, QScriptValue::PropertyFlags(flags));
+    out = tmp;
+}
+
+/*!
+  \since 4.5
+  \class QScriptDebuggerConsole
+  \internal
+
+  \brief The QScriptDebuggerConsole class provides the core functionality of a debugger console.
+*/
+
+class QScriptDebuggerConsolePrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerConsole)
+public:
+    QScriptDebuggerConsolePrivate(QScriptDebuggerConsole*);
+    ~QScriptDebuggerConsolePrivate();
+
+    void loadScriptedCommands(const QString &scriptsPath,
+                              QScriptMessageHandlerInterface *messageHandler);
+    QScriptDebuggerConsoleCommandJob *createJob(
+        const QString &command,
+        QScriptMessageHandlerInterface *messageHandler,
+        QScriptDebuggerCommandSchedulerInterface *commandScheduler);
+
+    QScriptEngine *commandEngine;
+    QScriptDebuggerConsoleCommandManager *commandManager;
+    QString commandPrefix;
+    QString input;
+    QStringList commandHistory;
+    int currentFrameIndex;
+    qint64 currentScriptId;
+    int currentLineNumber;
+    int evaluateAction;
+    qint64 sessionId;
+
+    QScriptDebuggerConsole *q_ptr;
+};
+
+QScriptDebuggerConsolePrivate::QScriptDebuggerConsolePrivate(QScriptDebuggerConsole* parent)
+    : q_ptr(parent)
+{
+    sessionId = 0;
+    currentFrameIndex = 0;
+    currentScriptId = -1;
+    currentLineNumber = -1;
+    evaluateAction = 0;
+    commandPrefix = QLatin1String(".");
+    commandManager = new QScriptDebuggerConsoleCommandManager();
+
+    commandEngine = new QScriptEngine;
+    qScriptRegisterMetaType<QScriptBreakpointData>(commandEngine, breakpointDataToScriptValue, breakpointDataFromScriptValue);
+    qScriptRegisterMetaType<QScriptBreakpointMap>(commandEngine, breakpointMapToScriptValue, breakpointMapFromScriptValue);
+    qScriptRegisterMetaType<QScriptScriptData>(commandEngine, scriptDataToScriptValue, scriptDataFromScriptValue);
+    qScriptRegisterMetaType<QScriptScriptMap>(commandEngine, scriptMapToScriptValue, scriptMapFromScriptValue);
+    qScriptRegisterMetaType<QScriptContextInfo>(commandEngine, contextInfoToScriptValue, contextInfoFromScriptValue);
+    qScriptRegisterMetaType<QScriptDebuggerValueProperty>(commandEngine, debuggerScriptValuePropertyToScriptValue, debuggerScriptValuePropertyFromScriptValue);
+    qScriptRegisterSequenceMetaType<QScriptDebuggerValuePropertyList>(commandEngine);
+    qScriptRegisterMetaType<QScriptDebuggerResponse>(commandEngine, debuggerResponseToScriptValue, debuggerResponseFromScriptValue);
+    qScriptRegisterMetaType<QScriptDebuggerConsoleCommand*>(commandEngine, consoleCommandToScriptValue, consoleCommandFromScriptValue);
+    qScriptRegisterSequenceMetaType<QScriptDebuggerConsoleCommandList>(commandEngine);
+    qScriptRegisterMetaType<QScriptDebuggerConsoleCommandGroupData>(commandEngine, consoleCommandGroupDataToScriptValue, consoleCommandGroupDataFromScriptValue);
+    qScriptRegisterMetaType<QScriptDebuggerConsoleCommandGroupMap>(commandEngine, consoleCommandGroupMapToScriptValue, consoleCommandGroupMapFromScriptValue);
+// ### can't do this, if it's an object ID the conversion will be incorrect since
+// ### the object ID refers to an object in a different engine!
+//    qScriptRegisterMetaType(commandEngine, debuggerScriptValueToScriptValue, debuggerScriptValueFromScriptValue);
+}
+
+QScriptDebuggerConsolePrivate::~QScriptDebuggerConsolePrivate()
+{
+    delete commandManager;
+    delete commandEngine;
+}
+
+/*!
+  Loads command definitions from scripts located in the given \a scriptsPath.
+*/
+void QScriptDebuggerConsolePrivate::loadScriptedCommands(
+    const QString &scriptsPath,
+    QScriptMessageHandlerInterface *messageHandler)
+{
+    QDir dir(scriptsPath);
+    QFileInfoList entries = dir.entryInfoList(QStringList()
+                                              << QLatin1String("*.qs"));
+    for (int i = 0; i < entries.size(); ++i) {
+        const QFileInfo &fi = entries.at(i);
+        QString fileName = fi.fileName();
+        QFile file(scriptsPath + QLatin1Char('/') + fileName);
+        if (!file.open(QIODevice::ReadOnly))
+            continue;
+        QTextStream stream(&file);
+        QString program = stream.readAll();
+        QScriptDebuggerScriptedConsoleCommand *command;
+        command = QScriptDebuggerScriptedConsoleCommand::parse(
+            program, fileName, commandEngine, messageHandler);
+        if (!command)
+            continue;
+        commandManager->addCommand(command);
+    }
+}
+
+
+/*!
+  Creates a job that will execute the given debugger \a command.
+  Returns the new job, or 0 if the command is undefined.
+*/
+QScriptDebuggerConsoleCommandJob *QScriptDebuggerConsolePrivate::createJob(
+    const QString &command, QScriptMessageHandlerInterface *messageHandler,
+    QScriptDebuggerCommandSchedulerInterface *commandScheduler)
+{
+    QString name;
+    int i = command.indexOf(QLatin1Char(' '));
+    if (i == -1) {
+        name = command;
+        i = name.size();
+    } else {
+        name = command.left(i);
+    }
+    if (name.isEmpty())
+        return 0;
+    QScriptDebuggerConsoleCommand *cmd = commandManager->findCommand(name);
+    if (!cmd) {
+        // try to auto-complete
+        QStringList completions = commandManager->completions(name);
+        if (!completions.isEmpty()) {
+            if (completions.size() > 1) {
+                QString msg;
+                msg.append(QString::fromLatin1("Ambiguous command \"%0\": ")
+                           .arg(name));
+                for (int j = 0; j < completions.size(); ++j) {
+                    if (j > 0)
+                        msg.append(QLatin1String(", "));
+                    msg.append(completions.at(j));
+                }
+                msg.append(QLatin1Char('.'));
+                messageHandler->message(QtWarningMsg, msg);
+                return 0;
+            }
+            cmd = commandManager->findCommand(completions.at(0));
+            Q_ASSERT(cmd != 0);
+        }
+        if (!cmd) {
+            messageHandler->message(
+                QtWarningMsg,
+                QString::fromLatin1("Undefined command \"%0\". Try \"help\".")
+                .arg(name));
+            return 0;
+        }
+    }
+    QStringList args;
+    QString tmp = command.mid(i+1);
+    if (cmd->argumentTypes().contains(QString::fromLatin1("script"))) {
+        if (!tmp.isEmpty())
+            args.append(tmp);
+    } else {
+        args = tmp.split(QLatin1Char(' '), QString::SkipEmptyParts);
+    }
+    return cmd->createJob(args, q_func(), messageHandler, commandScheduler);
+}
+
+QScriptDebuggerConsole::QScriptDebuggerConsole()
+    : d_ptr(new QScriptDebuggerConsolePrivate(this))
+{
+}
+
+QScriptDebuggerConsole::~QScriptDebuggerConsole()
+{
+}
+
+void QScriptDebuggerConsole::loadScriptedCommands(const QString &scriptsPath,
+                                                  QScriptMessageHandlerInterface *messageHandler)
+{
+    Q_D(QScriptDebuggerConsole);
+    d->loadScriptedCommands(scriptsPath, messageHandler);
+}
+
+QScriptDebuggerConsoleCommandManager *QScriptDebuggerConsole::commandManager() const
+{
+    Q_D(const QScriptDebuggerConsole);
+    return d->commandManager;
+}
+
+bool QScriptDebuggerConsole::hasIncompleteInput() const
+{
+    Q_D(const QScriptDebuggerConsole);
+    return !d->input.isEmpty();
+}
+
+QString QScriptDebuggerConsole::incompleteInput() const
+{
+    Q_D(const QScriptDebuggerConsole);
+    return d->input;
+}
+
+void QScriptDebuggerConsole::setIncompleteInput(const QString &input)
+{
+    Q_D(QScriptDebuggerConsole);
+    d->input = input;
+}
+
+QString QScriptDebuggerConsole::commandPrefix() const
+{
+    Q_D(const QScriptDebuggerConsole);
+    return d->commandPrefix;
+}
+
+/*!
+  Consumes the given line of \a input.  If the input starts with the
+  command prefix, it is regarded as a debugger command; otherwise the
+  input is evaluated as a plain script.
+*/
+QScriptDebuggerConsoleCommandJob *QScriptDebuggerConsole::consumeInput(
+    const QString &input, QScriptMessageHandlerInterface *messageHandler,
+    QScriptDebuggerCommandSchedulerInterface *commandScheduler)
+{
+    Q_D(QScriptDebuggerConsole);
+    static const int maximumHistoryCount = 100;
+    QString cmd;
+    if (d->input.isEmpty() && input.isEmpty()) {
+        if (d->commandHistory.isEmpty())
+            return 0;
+        cmd = d->commandHistory.first();
+    } else {
+        cmd = input;
+    }
+    if (d->input.isEmpty() && cmd.startsWith(d->commandPrefix)) {
+        if (!input.isEmpty()) {
+            d->commandHistory.prepend(cmd);
+            if (d->commandHistory.size() > maximumHistoryCount)
+                d->commandHistory.removeLast();
+        }
+        cmd.remove(0, d->commandPrefix.length());
+        return d->createJob(cmd, messageHandler, commandScheduler);
+    }
+    d->input += cmd;
+    d->input += QLatin1Char('\n');
+    QScriptSyntaxCheckResult check = QScriptEngine::checkSyntax(d->input);
+    if (check.state() == QScriptSyntaxCheckResult::Intermediate)
+        return false;
+    d->input.chop(1); // remove the last \n
+    cmd = QString();
+    cmd.append(d->commandPrefix);
+    cmd.append(QString::fromLatin1("eval "));
+    cmd.append(d->input);
+    d->commandHistory.prepend(cmd);
+    if (d->commandHistory.size() > maximumHistoryCount)
+        d->commandHistory.removeLast();
+    d->input.clear();
+    cmd.remove(0, d->commandPrefix.length());
+    return d->createJob(cmd, messageHandler, commandScheduler);
+}
+
+int QScriptDebuggerConsole::currentFrameIndex() const
+{
+    Q_D(const QScriptDebuggerConsole);
+    return d->currentFrameIndex;
+}
+
+void QScriptDebuggerConsole::setCurrentFrameIndex(int index)
+{
+    Q_D(QScriptDebuggerConsole);
+    d->currentFrameIndex = index;
+}
+
+qint64 QScriptDebuggerConsole::currentScriptId() const
+{
+    Q_D(const QScriptDebuggerConsole);
+    return d->currentScriptId;
+}
+
+void QScriptDebuggerConsole::setCurrentScriptId(qint64 id)
+{
+    Q_D(QScriptDebuggerConsole);
+    d->currentScriptId = id;
+}
+
+int QScriptDebuggerConsole::currentLineNumber() const
+{
+    Q_D(const QScriptDebuggerConsole);
+    return d->currentLineNumber;
+}
+
+void QScriptDebuggerConsole::setCurrentLineNumber(int lineNumber)
+{
+    Q_D(QScriptDebuggerConsole);
+    d->currentLineNumber = lineNumber;
+}
+
+int QScriptDebuggerConsole::evaluateAction() const
+{
+    Q_D(const QScriptDebuggerConsole);
+    return d->evaluateAction;
+}
+
+void QScriptDebuggerConsole::setEvaluateAction(int action)
+{
+    Q_D(QScriptDebuggerConsole);
+    d->evaluateAction = action;
+}
+
+qint64 QScriptDebuggerConsole::sessionId() const
+{
+    Q_D(const QScriptDebuggerConsole);
+    return d->sessionId;
+}
+
+void QScriptDebuggerConsole::bumpSessionId()
+{
+    Q_D(QScriptDebuggerConsole);
+    ++d->sessionId;
+}
+
+void QScriptDebuggerConsole::showDebuggerInfoMessage(
+    QScriptMessageHandlerInterface *messageHandler)
+{
+    messageHandler->message(
+        QtDebugMsg,
+        QString::fromLatin1(
+            "Welcome to the Qt Script debugger.\n"
+            "Debugger commands start with a . (period).\n"
+            "Any other input will be evaluated by the script interpreter.\n"
+            "Type \".help\" for help.\n"));
+}
+
+/*!
+  \reimp
+*/
+int QScriptDebuggerConsole::historyCount() const
+{
+    Q_D(const QScriptDebuggerConsole);
+    return d->commandHistory.size();
+}
+
+/*!
+  \reimp
+*/
+QString QScriptDebuggerConsole::historyAt(int index) const
+{
+    Q_D(const QScriptDebuggerConsole);
+    return d->commandHistory.value(index);
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerConsole::changeHistoryAt(int index, const QString &newHistory)
+{
+    Q_D(QScriptDebuggerConsole);
+    d->commandHistory[index] = newHistory;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerconsole_p.h b/src/scripttools/debugging/qscriptdebuggerconsole_p.h
new file mode 100644
index 0000000..d76dc38
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsole_p.h
@@ -0,0 +1,121 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCONSOLE_P_H
+#define QSCRIPTDEBUGGERCONSOLE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+#include <QtCore/qscopedpointer.h>
+
+#include "qscriptdebuggerconsolehistorianinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QString;
+class QScriptDebuggerConsoleCommandJob;
+class QScriptMessageHandlerInterface;
+class QScriptDebuggerCommandSchedulerInterface;
+class QScriptDebuggerConsoleCommandManager;
+
+class QScriptDebuggerConsolePrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerConsole
+    : public QScriptDebuggerConsoleHistorianInterface
+{
+public:
+    QScriptDebuggerConsole();
+    ~QScriptDebuggerConsole();
+
+    void loadScriptedCommands(const QString &scriptsPath,
+                              QScriptMessageHandlerInterface *messageHandler);
+
+    void showDebuggerInfoMessage(QScriptMessageHandlerInterface *messageHandler);
+
+    QScriptDebuggerConsoleCommandManager *commandManager() const;
+
+    QScriptDebuggerConsoleCommandJob *consumeInput(
+        const QString &input,
+        QScriptMessageHandlerInterface *messageHandler,
+        QScriptDebuggerCommandSchedulerInterface *commandScheduler);
+    bool hasIncompleteInput() const;
+    QString incompleteInput() const;
+    void setIncompleteInput(const QString &input);
+    QString commandPrefix() const;
+
+    int historyCount() const;
+    QString historyAt(int index) const;
+    void changeHistoryAt(int index, const QString &newHistory);
+
+    int currentFrameIndex() const;
+    void setCurrentFrameIndex(int index);
+
+    qint64 currentScriptId() const;
+    void setCurrentScriptId(qint64 id);
+
+    int currentLineNumber() const;
+    void setCurrentLineNumber(int lineNumber);
+
+    int evaluateAction() const;
+    void setEvaluateAction(int action);
+
+    qint64 sessionId() const;
+    void bumpSessionId();
+
+private:
+    QScopedPointer<QScriptDebuggerConsolePrivate> d_ptr;
+
+    Q_DECLARE_PRIVATE(QScriptDebuggerConsole)
+    Q_DISABLE_COPY(QScriptDebuggerConsole)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerconsolecommand.cpp b/src/scripttools/debugging/qscriptdebuggerconsolecommand.cpp
new file mode 100644
index 0000000..af468a3
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsolecommand.cpp
@@ -0,0 +1,147 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerconsolecommand_p.h"
+#include "qscriptdebuggerconsolecommand_p_p.h"
+
+#include <QtCore/qstringlist.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \since 4.5
+  \class QScriptDebuggerConsoleCommand
+  \internal
+
+  \brief The QScriptDebuggerConsoleCommand class is the base class of console commands.
+
+  \sa QScriptDebuggerConsoleCommandManager
+*/
+
+QScriptDebuggerConsoleCommandPrivate::QScriptDebuggerConsoleCommandPrivate()
+{
+}
+
+QScriptDebuggerConsoleCommandPrivate::~QScriptDebuggerConsoleCommandPrivate()
+{
+}
+
+QScriptDebuggerConsoleCommand::QScriptDebuggerConsoleCommand()
+    : d_ptr(new QScriptDebuggerConsoleCommandPrivate)
+{
+    d_ptr->q_ptr = this;
+}
+
+QScriptDebuggerConsoleCommand::~QScriptDebuggerConsoleCommand()
+{
+}
+
+QScriptDebuggerConsoleCommand::QScriptDebuggerConsoleCommand(QScriptDebuggerConsoleCommandPrivate &dd)
+    : d_ptr(&dd)
+{
+    d_ptr->q_ptr = this;
+}
+
+/*!
+  \fn QString QScriptDebuggerConsoleCommand::name() const
+
+  Returns the name of this console command.
+*/
+
+/*!
+  \fn QString QScriptDebuggerConsoleCommand::group() const
+
+  Returns the group that this console command belongs to.
+*/
+
+/*!
+  \fn QString QScriptDebuggerConsoleCommand::shortDescription() const
+
+  Returns a short (one line) description of the command.
+*/
+
+/*!
+  \fn QString QScriptDebuggerConsoleCommand::longDescription() const
+
+  Returns a detailed description of how to use the command.
+*/
+
+/*!
+  \fn QScriptDebuggerConsoleCommandJob *QScriptDebuggerConsoleCommand::createJob(
+        const QStringList &arguments,
+        QScriptDebuggerConsole *console,
+        QScriptMessageHandlerInterface *messageHandler,
+        QScriptDebuggerCommandSchedulerInterface *scheduler) = 0
+
+  Creates a job that will execute this command with the given \a
+  arguments. If the command cannot be executed (e.g. because one or
+  more arguments are invalid), a suitable error message should be
+  output to the \a messageHandler, and 0 should be returned.
+*/
+
+/*!
+  Returns a list of names of commands that may also be of interest to
+  users of this command.
+*/
+QStringList QScriptDebuggerConsoleCommand::seeAlso() const
+{
+    return QStringList();
+}
+
+/*!
+  Returns a list of aliases for this command.
+*/
+QStringList QScriptDebuggerConsoleCommand::aliases() const
+{
+    return QStringList();
+}
+
+QStringList QScriptDebuggerConsoleCommand::argumentTypes() const
+{
+    return QStringList();
+}
+
+QStringList QScriptDebuggerConsoleCommand::subCommands() const
+{
+    return QStringList();
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerconsolecommand_p.h b/src/scripttools/debugging/qscriptdebuggerconsolecommand_p.h
new file mode 100644
index 0000000..a48647d
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsolecommand_p.h
@@ -0,0 +1,105 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCONSOLECOMMAND_P_H
+#define QSCRIPTDEBUGGERCONSOLECOMMAND_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+#include <QtCore/qscopedpointer.h>
+#include <QtCore/qlist.h>
+
+QT_BEGIN_NAMESPACE
+
+class QString;
+class QStringList;
+class QScriptDebuggerConsole;
+class QScriptDebuggerConsoleCommandJob;
+class QScriptMessageHandlerInterface;
+class QScriptDebuggerCommandSchedulerInterface;
+
+class QScriptDebuggerConsoleCommandPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerConsoleCommand
+{
+public:
+    QScriptDebuggerConsoleCommand();
+    virtual ~QScriptDebuggerConsoleCommand();
+
+    virtual QString name() const = 0;
+    virtual QString group() const = 0;
+    virtual QString shortDescription() const = 0;
+    virtual QString longDescription() const = 0;
+    virtual QStringList seeAlso() const;
+    virtual QStringList aliases() const;
+
+    virtual QStringList argumentTypes() const;
+
+    virtual QStringList subCommands() const;
+    virtual QScriptDebuggerConsoleCommandJob *createJob(
+        const QStringList &arguments,
+        QScriptDebuggerConsole *console,
+        QScriptMessageHandlerInterface *messageHandler,
+        QScriptDebuggerCommandSchedulerInterface *scheduler) = 0;
+
+protected:
+    QScriptDebuggerConsoleCommand(QScriptDebuggerConsoleCommandPrivate &dd);
+    QScopedPointer<QScriptDebuggerConsoleCommandPrivate> d_ptr;
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerConsoleCommand)
+    Q_DISABLE_COPY(QScriptDebuggerConsoleCommand)
+};
+
+typedef QList<QScriptDebuggerConsoleCommand*> QScriptDebuggerConsoleCommandList;
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerconsolecommand_p_p.h b/src/scripttools/debugging/qscriptdebuggerconsolecommand_p_p.h
new file mode 100644
index 0000000..44efb41
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsolecommand_p_p.h
@@ -0,0 +1,73 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCONSOLECOMMAND_P_P_H
+#define QSCRIPTDEBUGGERCONSOLECOMMAND_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerConsoleCommand;
+class QScriptDebuggerConsoleCommandPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerConsoleCommand)
+public:
+    QScriptDebuggerConsoleCommandPrivate();
+    virtual ~QScriptDebuggerConsoleCommandPrivate();
+
+    QScriptDebuggerConsoleCommand *q_ptr;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerconsolecommandgroupdata.cpp b/src/scripttools/debugging/qscriptdebuggerconsolecommandgroupdata.cpp
new file mode 100644
index 0000000..073a069
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsolecommandgroupdata.cpp
@@ -0,0 +1,128 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerconsolecommandgroupdata_p.h"
+
+#include <QtCore/qstring.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \since 4.5
+  \class QScriptDebuggerConsoleCommandGroupData
+  \internal
+
+  \brief The QScriptDebuggerConsoleCommandGroupData class holds data associated with a console command group.
+*/
+
+class QScriptDebuggerConsoleCommandGroupDataPrivate
+{
+public:
+    QScriptDebuggerConsoleCommandGroupDataPrivate();
+    ~QScriptDebuggerConsoleCommandGroupDataPrivate();
+
+    QString shortDescription;
+    QString longDescription;
+
+    QBasicAtomicInt ref;
+};
+
+QScriptDebuggerConsoleCommandGroupDataPrivate::QScriptDebuggerConsoleCommandGroupDataPrivate()
+{
+    ref = 0;
+}
+
+QScriptDebuggerConsoleCommandGroupDataPrivate::~QScriptDebuggerConsoleCommandGroupDataPrivate()
+{
+}
+
+QScriptDebuggerConsoleCommandGroupData::QScriptDebuggerConsoleCommandGroupData()
+    : d_ptr(0)
+{
+}
+
+QScriptDebuggerConsoleCommandGroupData::QScriptDebuggerConsoleCommandGroupData(
+    const QString &shortDescription, const QString &longDescription)
+    : d_ptr(new QScriptDebuggerConsoleCommandGroupDataPrivate)
+{
+    d_ptr->shortDescription = shortDescription;
+    d_ptr->longDescription = longDescription;
+    d_ptr->ref.ref();
+}
+
+QScriptDebuggerConsoleCommandGroupData::QScriptDebuggerConsoleCommandGroupData(
+    const QScriptDebuggerConsoleCommandGroupData &other)
+    : d_ptr(other.d_ptr.data())
+{
+    if (d_ptr)
+        d_ptr->ref.ref();
+}
+
+QScriptDebuggerConsoleCommandGroupData::~QScriptDebuggerConsoleCommandGroupData()
+{
+}
+
+QScriptDebuggerConsoleCommandGroupData &QScriptDebuggerConsoleCommandGroupData::operator=(
+    const QScriptDebuggerConsoleCommandGroupData &other)
+{
+    d_ptr.assign(other.d_ptr.data());
+    return *this;
+}
+
+QString QScriptDebuggerConsoleCommandGroupData::shortDescription() const
+{
+    Q_D(const QScriptDebuggerConsoleCommandGroupData);
+    return d->shortDescription;
+}
+
+QString QScriptDebuggerConsoleCommandGroupData::longDescription() const
+{
+    Q_D(const QScriptDebuggerConsoleCommandGroupData);
+    return d->longDescription;
+}
+
+bool QScriptDebuggerConsoleCommandGroupData::isValid() const
+{
+    Q_D(const QScriptDebuggerConsoleCommandGroupData);
+    return (d != 0);
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerconsolecommandgroupdata_p.h b/src/scripttools/debugging/qscriptdebuggerconsolecommandgroupdata_p.h
new file mode 100644
index 0000000..75d5b27
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsolecommandgroupdata_p.h
@@ -0,0 +1,95 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCONSOLECOMMANDGROUPDATA_P_H
+#define QSCRIPTDEBUGGERCONSOLECOMMANDGROUPDATA_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+#include <QtCore/private/qscopedpointer_p.h>
+#include <QtCore/qmap.h>
+
+QT_BEGIN_NAMESPACE
+
+class QString;
+
+class QScriptDebuggerConsoleCommandGroupDataPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerConsoleCommandGroupData
+{
+public:
+    QScriptDebuggerConsoleCommandGroupData();
+    QScriptDebuggerConsoleCommandGroupData(
+        const QString &shortDescription,
+        const QString &longDescription);
+    QScriptDebuggerConsoleCommandGroupData(
+        const QScriptDebuggerConsoleCommandGroupData &other);
+    ~QScriptDebuggerConsoleCommandGroupData();
+
+    QString shortDescription() const;
+    QString longDescription() const;
+
+    bool isValid() const;
+
+    QScriptDebuggerConsoleCommandGroupData &operator=(
+        const QScriptDebuggerConsoleCommandGroupData &other);
+
+private:
+    QScopedSharedPointer<QScriptDebuggerConsoleCommandGroupDataPrivate> d_ptr;
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerConsoleCommandGroupData)
+};
+
+typedef QMap<QString, QScriptDebuggerConsoleCommandGroupData> QScriptDebuggerConsoleCommandGroupMap;
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerconsolecommandjob.cpp b/src/scripttools/debugging/qscriptdebuggerconsolecommandjob.cpp
new file mode 100644
index 0000000..1b4e14c
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsolecommandjob.cpp
@@ -0,0 +1,85 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerconsolecommandjob_p.h"
+#include "qscriptdebuggerconsolecommandjob_p_p.h"
+
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+QScriptDebuggerConsoleCommandJobPrivate::QScriptDebuggerConsoleCommandJobPrivate()
+{
+}
+
+QScriptDebuggerConsoleCommandJobPrivate::~QScriptDebuggerConsoleCommandJobPrivate()
+{
+}
+
+QScriptDebuggerConsoleCommandJob::QScriptDebuggerConsoleCommandJob(
+    QScriptDebuggerConsole *console,
+    QScriptMessageHandlerInterface *messageHandler,
+    QScriptDebuggerCommandSchedulerInterface *scheduler)
+    : QScriptDebuggerCommandSchedulerJob(*new QScriptDebuggerConsoleCommandJobPrivate,
+                                         scheduler)
+{
+    Q_D(QScriptDebuggerConsoleCommandJob);
+    d->console = console;
+    d->messageHandler = messageHandler;
+}
+
+QScriptDebuggerConsoleCommandJob::~QScriptDebuggerConsoleCommandJob()
+{
+}
+
+QScriptDebuggerConsoleCommandJob::QScriptDebuggerConsoleCommandJob(
+    QScriptDebuggerConsoleCommandJobPrivate &dd,
+    QScriptDebuggerConsole *console,
+    QScriptMessageHandlerInterface *messageHandler,
+    QScriptDebuggerCommandSchedulerInterface *scheduler)
+    : QScriptDebuggerCommandSchedulerJob(dd, scheduler)
+{
+    Q_D(QScriptDebuggerConsoleCommandJob);
+    d->console = console;
+    d->messageHandler = messageHandler;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerconsolecommandjob_p.h b/src/scripttools/debugging/qscriptdebuggerconsolecommandjob_p.h
new file mode 100644
index 0000000..6146bef
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsolecommandjob_p.h
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCONSOLECOMMANDJOB_P_H
+#define QSCRIPTDEBUGGERCONSOLECOMMANDJOB_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscriptdebuggercommandschedulerjob_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerConsole;
+class QScriptMessageHandlerInterface;
+
+class QScriptDebuggerConsoleCommandJobPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerConsoleCommandJob
+    : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    QScriptDebuggerConsoleCommandJob(QScriptDebuggerConsole *console,
+                                     QScriptMessageHandlerInterface *messageHandler,
+                                     QScriptDebuggerCommandSchedulerInterface *scheduler);
+    ~QScriptDebuggerConsoleCommandJob();
+
+protected:
+    QScriptDebuggerConsoleCommandJob(QScriptDebuggerConsoleCommandJobPrivate &dd,
+                                     QScriptDebuggerConsole *console,
+                                     QScriptMessageHandlerInterface *messageHandler,
+                                     QScriptDebuggerCommandSchedulerInterface *scheduler);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerConsoleCommandJob)
+    Q_DISABLE_COPY(QScriptDebuggerConsoleCommandJob)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerconsolecommandjob_p_p.h b/src/scripttools/debugging/qscriptdebuggerconsolecommandjob_p_p.h
new file mode 100644
index 0000000..2f45d76
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsolecommandjob_p_p.h
@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCONSOLECOMMANDJOB_P_P_H
+#define QSCRIPTDEBUGGERCONSOLECOMMANDJOB_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscriptdebuggercommandschedulerjob_p_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerConsole;
+class QScriptMessageHandlerInterface;
+
+class QScriptDebuggerConsoleCommandJob;
+class QScriptDebuggerConsoleCommandJobPrivate
+    : public QScriptDebuggerCommandSchedulerJobPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerConsoleCommandJob)
+public:
+    QScriptDebuggerConsoleCommandJobPrivate();
+    ~QScriptDebuggerConsoleCommandJobPrivate();
+
+    QScriptDebuggerConsole *console;
+    QScriptMessageHandlerInterface *messageHandler;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerconsolecommandmanager.cpp b/src/scripttools/debugging/qscriptdebuggerconsolecommandmanager.cpp
new file mode 100644
index 0000000..8e46cd2
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsolecommandmanager.cpp
@@ -0,0 +1,244 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerconsolecommandmanager_p.h"
+#include "qscriptdebuggerconsolecommand_p.h"
+#include "qscriptdebuggerconsolecommandgroupdata_p.h"
+
+#include <QtCore/qlist.h>
+#include <QtCore/qstringlist.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \since 4.5
+  \class QScriptDebuggerConsoleCommandManager
+  \internal
+
+  \brief The QScriptDebuggerConsoleCommandManager manages a collection of console commands.
+
+*/
+
+class QScriptDebuggerConsoleCommandManagerPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerConsoleCommandManager)
+public:
+    QScriptDebuggerConsoleCommandManagerPrivate();
+    ~QScriptDebuggerConsoleCommandManagerPrivate();
+
+    QList<QScriptDebuggerConsoleCommand*> commands;
+    QMap<QString, QScriptDebuggerConsoleCommandGroupData> groups;
+
+    QScriptDebuggerConsoleCommandManager *q_ptr;
+};
+
+QScriptDebuggerConsoleCommandManagerPrivate::QScriptDebuggerConsoleCommandManagerPrivate()
+{
+    groups[QLatin1String("breakpoints")] =
+        QScriptDebuggerConsoleCommandGroupData(QLatin1String("Making program stop at certain points"),
+                                               QLatin1String(""));
+    groups[QLatin1String("files")] =
+        QScriptDebuggerConsoleCommandGroupData(QLatin1String("Examining files"),
+                                               QLatin1String(""));
+    groups[QLatin1String("stack")] =
+        QScriptDebuggerConsoleCommandGroupData(QLatin1String("Examining the stack"),
+                                               QLatin1String(""));
+    groups[QLatin1String("running")] =
+        QScriptDebuggerConsoleCommandGroupData(QLatin1String("Running the program"),
+                                               QLatin1String(""));
+    groups[QLatin1String("status")] =
+        QScriptDebuggerConsoleCommandGroupData(QLatin1String("Status inquiries"),
+                                               QLatin1String(""));
+    groups[QLatin1String("void")] =
+        QScriptDebuggerConsoleCommandGroupData(QLatin1String("No such group"),
+                                               QLatin1String("It's a secret to everyone"));
+}
+
+QScriptDebuggerConsoleCommandManagerPrivate::~QScriptDebuggerConsoleCommandManagerPrivate()
+{
+    qDeleteAll(commands);
+}
+
+QScriptDebuggerConsoleCommandManager::QScriptDebuggerConsoleCommandManager()
+    : d_ptr(new QScriptDebuggerConsoleCommandManagerPrivate)
+{
+    d_ptr->q_ptr = this;
+}
+
+QScriptDebuggerConsoleCommandManager::~QScriptDebuggerConsoleCommandManager()
+{
+}
+
+/*!
+  Adds the given \a command.
+  The manager takes ownership of the command.
+*/
+void QScriptDebuggerConsoleCommandManager::addCommand(QScriptDebuggerConsoleCommand *command)
+{
+    Q_D(QScriptDebuggerConsoleCommandManager);
+    Q_ASSERT(command != 0);
+    if (command->name().isEmpty()) {
+        qWarning("addCommand(): nameless command ignored");
+        return;
+    }
+    if (command->group().isEmpty()) {
+        qWarning("addCommand(): groupless command '%s' ignored",
+                 qPrintable(command->name()));
+        return;
+    }
+    if (findCommand(command->name()) != 0) {
+        qWarning("addCommand(): duplicate command '%s' (group '%s') ignored",
+                 qPrintable(command->name()), qPrintable(command->group()));
+        return;
+    }
+    if (!d->groups.contains(command->group())) {
+        qWarning("addCommand(): group '%s' for command '%s' is unknown!",
+                 qPrintable(command->group()), qPrintable(command->name()));
+    }
+    d->commands.append(command);
+}
+
+/*!
+  Registers a command group with the given \a name and \a data.
+*/
+void QScriptDebuggerConsoleCommandManager::addCommandGroup(
+    const QString &name, const QScriptDebuggerConsoleCommandGroupData &data)
+{
+    Q_D(QScriptDebuggerConsoleCommandManager);
+    if (name.isEmpty()) {
+        qWarning("addCommandGroup(): nameless group ignored");
+        return;
+    }
+    if (d->groups.contains(name)) {
+        qWarning("addCommandGroup(): group '%s' already defined",
+                 qPrintable(name));
+        return;
+    }
+    d->groups[name] = data;
+}
+
+/*!
+  Returns the command with the given \a name if one exists, otherwise
+  returns 0.
+*/
+QScriptDebuggerConsoleCommand *QScriptDebuggerConsoleCommandManager::findCommand(const QString &name) const
+{
+    Q_D(const QScriptDebuggerConsoleCommandManager);
+    for (int i = 0; i < d->commands.size(); ++i) {
+        QScriptDebuggerConsoleCommand *cmd = d->commands.at(i);
+        if (cmd->name() == name)
+            return cmd;
+        else if (cmd->aliases().contains(name))
+            return cmd;
+    }
+    return 0;
+}
+
+/*!
+  Returns the commands organized into groups.
+*/
+QMap<QString, QList<QScriptDebuggerConsoleCommand*> > QScriptDebuggerConsoleCommandManager::commands() const
+{
+    Q_D(const QScriptDebuggerConsoleCommandManager);
+    QMap<QString, QList<QScriptDebuggerConsoleCommand*> > result;
+    for (int i = 0; i < d->commands.size(); ++i) {
+        QScriptDebuggerConsoleCommand *cmd = d->commands.at(i);
+        result[cmd->group()].append(cmd);
+    }
+    return result;
+}
+
+/*!
+  Returns commands in the group of the given \a name.
+*/
+QScriptDebuggerConsoleCommandList QScriptDebuggerConsoleCommandManager::commandsInGroup(const QString &name) const
+{
+    Q_D(const QScriptDebuggerConsoleCommandManager);
+    QScriptDebuggerConsoleCommandList result;
+    for (int i = 0; i < d->commands.size(); ++i) {
+        QScriptDebuggerConsoleCommand *cmd = d->commands.at(i);
+        if (cmd->group() == name)
+            result.append(cmd);
+    }
+    return result;
+}
+
+/*!
+  Returns data associated with the group of the given \a name.
+*/
+QScriptDebuggerConsoleCommandGroupData QScriptDebuggerConsoleCommandManager::commandGroupData(const QString &name) const
+{
+    Q_D(const QScriptDebuggerConsoleCommandManager);
+    return d->groups.value(name);
+}
+
+/*!
+  Returns all command groups.
+*/
+QMap<QString, QScriptDebuggerConsoleCommandGroupData> QScriptDebuggerConsoleCommandManager::commandGroups() const
+{
+    Q_D(const QScriptDebuggerConsoleCommandManager);
+    return d->groups;
+}
+
+/*!
+  Returns the possible completions for the given \a prefix.
+*/
+QStringList QScriptDebuggerConsoleCommandManager::completions(const QString &prefix) const
+{
+    Q_D(const QScriptDebuggerConsoleCommandManager);
+    QStringList result;
+    for (int i = 0; i < d->commands.size(); ++i) {
+        QScriptDebuggerConsoleCommand *cmd = d->commands.at(i);
+        QStringList names;
+        names.append(cmd->name());
+//        names += cmd->aliases();
+        for (int j = 0; j < names.size(); ++j) {
+            const QString &name = names.at(j);
+            if ((name.length() > prefix.length()) && name.startsWith(prefix))
+                result.append(name);
+        }
+    }
+    qStableSort(result);
+    return result;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerconsolecommandmanager_p.h b/src/scripttools/debugging/qscriptdebuggerconsolecommandmanager_p.h
new file mode 100644
index 0000000..a166e3d
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsolecommandmanager_p.h
@@ -0,0 +1,96 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCONSOLECOMMANDMANAGER_P_H
+#define QSCRIPTDEBUGGERCONSOLECOMMANDMANAGER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+#include <QtCore/qscopedpointer.h>
+#include <QtCore/qmap.h>
+#include <QtCore/qlist.h>
+
+#include "qscriptdebuggerconsolecommandgroupdata_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerConsoleCommand;
+class QStringList;
+
+class QScriptDebuggerConsoleCommandManagerPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerConsoleCommandManager
+{
+public:
+    QScriptDebuggerConsoleCommandManager();
+    ~QScriptDebuggerConsoleCommandManager();
+
+    void addCommand(QScriptDebuggerConsoleCommand *command);
+    void addCommandGroup(const QString &name,
+                         const QScriptDebuggerConsoleCommandGroupData &data);
+
+    QScriptDebuggerConsoleCommand *findCommand(const QString &name) const;
+    QMap<QString, QList<QScriptDebuggerConsoleCommand*> > commands() const;
+    QList<QScriptDebuggerConsoleCommand*> commandsInGroup(const QString &name) const;
+
+    QScriptDebuggerConsoleCommandGroupData commandGroupData(const QString &name) const;
+    QScriptDebuggerConsoleCommandGroupMap commandGroups() const;
+
+    QStringList completions(const QString &prefix) const;
+
+private:
+    QScopedPointer<QScriptDebuggerConsoleCommandManagerPrivate> d_ptr;
+
+    Q_DECLARE_PRIVATE(QScriptDebuggerConsoleCommandManager)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerconsoleglobalobject.cpp b/src/scripttools/debugging/qscriptdebuggerconsoleglobalobject.cpp
new file mode 100644
index 0000000..4e4669c
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsoleglobalobject.cpp
@@ -0,0 +1,463 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerconsoleglobalobject_p.h"
+#include "qscriptdebuggercommandschedulerinterface_p.h"
+#include "qscriptdebuggercommandschedulerfrontend_p.h"
+#include "qscriptmessagehandlerinterface_p.h"
+#include "qscriptdebuggerconsole_p.h"
+#include "qscriptdebuggerconsolecommandmanager_p.h"
+
+#include <private/qobject_p.h>
+
+#include <QtScript/qscriptengine.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerConsoleGlobalObjectPrivate : public QObjectPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerConsoleGlobalObject)
+public:
+    QScriptDebuggerConsoleGlobalObjectPrivate();
+    ~QScriptDebuggerConsoleGlobalObjectPrivate();
+
+    QScriptDebuggerCommandSchedulerInterface *scheduler;
+    QScriptDebuggerResponseHandlerInterface *responseHandler;
+    QScriptMessageHandlerInterface *messageHandler;
+    QScriptDebuggerConsole *console;
+};
+
+QScriptDebuggerConsoleGlobalObjectPrivate::QScriptDebuggerConsoleGlobalObjectPrivate()
+{
+    scheduler = 0;
+    responseHandler = 0;
+    messageHandler = 0;
+    console = 0;
+}
+
+QScriptDebuggerConsoleGlobalObjectPrivate::~QScriptDebuggerConsoleGlobalObjectPrivate()
+{
+}
+
+QScriptDebuggerConsoleGlobalObject::QScriptDebuggerConsoleGlobalObject(QObject *parent)
+    : QObject(*new QScriptDebuggerConsoleGlobalObjectPrivate, parent)
+{
+}
+
+QScriptDebuggerConsoleGlobalObject::~QScriptDebuggerConsoleGlobalObject()
+{
+}
+
+QScriptDebuggerCommandSchedulerInterface *QScriptDebuggerConsoleGlobalObject::scheduler() const
+{
+    Q_D(const QScriptDebuggerConsoleGlobalObject);
+    return d->scheduler;
+}
+
+void QScriptDebuggerConsoleGlobalObject::setScheduler(QScriptDebuggerCommandSchedulerInterface *scheduler)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    d->scheduler = scheduler;
+}
+
+QScriptDebuggerResponseHandlerInterface *QScriptDebuggerConsoleGlobalObject::responseHandler() const
+{
+    Q_D(const QScriptDebuggerConsoleGlobalObject);
+    return d->responseHandler;
+}
+
+void QScriptDebuggerConsoleGlobalObject::setResponseHandler(
+    QScriptDebuggerResponseHandlerInterface *responseHandler)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    d->responseHandler = responseHandler;
+}
+
+QScriptMessageHandlerInterface *QScriptDebuggerConsoleGlobalObject::messageHandler() const
+{
+    Q_D(const QScriptDebuggerConsoleGlobalObject);
+    return d->messageHandler;
+}
+
+void QScriptDebuggerConsoleGlobalObject::setMessageHandler(QScriptMessageHandlerInterface *messageHandler)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    d->messageHandler = messageHandler;
+}
+
+QScriptDebuggerConsole *QScriptDebuggerConsoleGlobalObject::console() const
+{
+    Q_D(const QScriptDebuggerConsoleGlobalObject);
+    return d->console;
+}
+
+void QScriptDebuggerConsoleGlobalObject::setConsole(QScriptDebuggerConsole *console)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    d->console = console;
+}
+
+// ### the scheduleXXX functions could take a callback function as argument (rather than using the
+// global handleResponse() function)
+
+int QScriptDebuggerConsoleGlobalObject::scheduleInterrupt()
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleInterrupt();
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleContinue()
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleContinue();
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleStepInto(int count)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleStepInto(count);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleStepOver(int count)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleStepOver(count);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleStepOut()
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleStepOut();
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleRunToLocation(const QString &fileName, int lineNumber)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleRunToLocation(fileName, lineNumber);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleRunToLocation(qint64 scriptId, int lineNumber)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleRunToLocation(scriptId, lineNumber);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleForceReturn(int contextIndex, const QScriptDebuggerValue &value)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleForceReturn(contextIndex, value);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleSetBreakpoint(const QScriptBreakpointData &data)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleSetBreakpoint(data);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleDeleteBreakpoint(int id)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleDeleteBreakpoint(id);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleDeleteAllBreakpoints()
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleDeleteAllBreakpoints();
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleGetBreakpoints()
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleGetBreakpoints();
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleGetBreakpointData(int id)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleGetBreakpointData(id);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleSetBreakpointData(int id, const QScriptBreakpointData &data)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleSetBreakpointData(id, data);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleGetScripts()
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleGetScripts();
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleGetScriptData(qint64 id)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleGetScriptData(id);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleScriptsCheckpoint()
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleScriptsCheckpoint();
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleGetScriptsDelta()
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleGetScriptsDelta();
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleResolveScript(const QString &fileName)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleResolveScript(fileName);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleGetBacktrace()
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleGetBacktrace();
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleGetThisObject(int contextIndex)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleGetThisObject(contextIndex);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleGetActivationObject(int contextIndex)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleGetActivationObject(contextIndex);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleGetContextCount()
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleGetContextCount();
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleGetContextInfo(int contextIndex)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleGetContextInfo(contextIndex);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleNewScriptValueIterator(const QScriptDebuggerValue &object)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleNewScriptValueIterator(object);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleGetPropertiesByIterator(int id, int count)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleGetPropertiesByIterator(id, count);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleDeleteScriptValueIterator(int id)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleDeleteScriptValueIterator(id);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleEvaluate(int contextIndex, const QString &program,
+                                                         const QString &fileName,
+                                                         int lineNumber)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleEvaluate(contextIndex, program, fileName, lineNumber);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleScriptValueToString(const QScriptDebuggerValue &value)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleScriptValueToString(value);
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleClearExceptions()
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    QScriptDebuggerCommandSchedulerFrontend frontend(d->scheduler, d->responseHandler);
+    return frontend.scheduleClearExceptions();
+}
+
+int QScriptDebuggerConsoleGlobalObject::scheduleCommand(const QScriptDebuggerCommand &command)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    return d->scheduler->scheduleCommand(command, d->responseHandler);
+}
+
+void QScriptDebuggerConsoleGlobalObject::warning(const QString &text,
+                                                 const QString &fileName,
+                                                 int lineNumber, int columnNumber)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    Q_ASSERT(d->messageHandler != 0);
+    d->messageHandler->message(QtWarningMsg, text, fileName, lineNumber, columnNumber);
+}
+
+void QScriptDebuggerConsoleGlobalObject::message(const QString &text,
+                                                 const QString &fileName,
+                                                 int lineNumber, int columnNumber)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    Q_ASSERT(d->messageHandler != 0);
+    d->messageHandler->message(QtDebugMsg, text, fileName, lineNumber, columnNumber);
+}
+
+void QScriptDebuggerConsoleGlobalObject::error(const QString &text,
+                                               const QString &fileName,
+                                               int lineNumber, int columnNumber)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    Q_ASSERT(d->messageHandler != 0);
+    d->messageHandler->message(QtCriticalMsg, text, fileName, lineNumber, columnNumber);
+}
+
+int QScriptDebuggerConsoleGlobalObject::getCurrentFrameIndex() const
+{
+    Q_D(const QScriptDebuggerConsoleGlobalObject);
+    return d->console->currentFrameIndex();
+}
+
+void QScriptDebuggerConsoleGlobalObject::setCurrentFrameIndex(int index)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    d->console->setCurrentFrameIndex(index);
+}
+
+int QScriptDebuggerConsoleGlobalObject::getCurrentLineNumber() const
+{
+    Q_D(const QScriptDebuggerConsoleGlobalObject);
+    return d->console->currentLineNumber();
+}
+
+void QScriptDebuggerConsoleGlobalObject::setCurrentLineNumber(int lineNumber)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    d->console->setCurrentLineNumber(lineNumber);
+}
+
+qint64 QScriptDebuggerConsoleGlobalObject::getCurrentScriptId() const
+{
+    Q_D(const QScriptDebuggerConsoleGlobalObject);
+    return d->console->currentScriptId();
+}
+
+void QScriptDebuggerConsoleGlobalObject::setCurrentScriptId(qint64 id)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    d->console->setCurrentScriptId(id);
+}
+
+qint64 QScriptDebuggerConsoleGlobalObject::getSessionId() const
+{
+    Q_D(const QScriptDebuggerConsoleGlobalObject);
+    return d->console->sessionId();
+}
+
+QScriptDebuggerConsoleCommandGroupMap QScriptDebuggerConsoleGlobalObject::getCommandGroups() const
+{
+    Q_D(const QScriptDebuggerConsoleGlobalObject);
+    return d->console->commandManager()->commandGroups();
+}
+
+QScriptDebuggerConsoleCommand *QScriptDebuggerConsoleGlobalObject::findCommand(const QString &name) const
+{
+    Q_D(const QScriptDebuggerConsoleGlobalObject);
+    return d->console->commandManager()->findCommand(name);
+}
+
+QScriptDebuggerConsoleCommandList QScriptDebuggerConsoleGlobalObject::getCommandsInGroup(const QString &name) const
+{
+    Q_D(const QScriptDebuggerConsoleGlobalObject);
+    return d->console->commandManager()->commandsInGroup(name);
+}
+
+QStringList QScriptDebuggerConsoleGlobalObject::getCommandCompletions(const QString &prefix) const
+{
+    Q_D(const QScriptDebuggerConsoleGlobalObject);
+    return d->console->commandManager()->completions(prefix);
+}
+
+bool QScriptDebuggerConsoleGlobalObject::checkSyntax(const QString &program)
+{
+    return (QScriptEngine::checkSyntax(program).state() == QScriptSyntaxCheckResult::Valid);
+}
+
+void QScriptDebuggerConsoleGlobalObject::setEvaluateAction(int action)
+{
+    Q_D(QScriptDebuggerConsoleGlobalObject);
+    d->console->setEvaluateAction(action);
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerconsoleglobalobject_p.h b/src/scripttools/debugging/qscriptdebuggerconsoleglobalobject_p.h
new file mode 100644
index 0000000..21e3b7a
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsoleglobalobject_p.h
@@ -0,0 +1,172 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCONSOLEGLOBALOBJECT_P_H
+#define QSCRIPTDEBUGGERCONSOLEGLOBALOBJECT_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobject.h>
+
+#include <QtCore/qstringlist.h>
+
+#include "qscriptdebuggerconsolecommandgroupdata_p.h"
+#include "qscriptdebuggerconsolecommand_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerCommandSchedulerInterface;
+class QScriptMessageHandlerInterface;
+class QScriptDebuggerResponseHandlerInterface;
+class QScriptDebuggerConsole;
+class QScriptDebuggerValue;
+class QScriptDebuggerCommand;
+class QScriptBreakpointData;
+
+class QScriptDebuggerConsoleGlobalObjectPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerConsoleGlobalObject
+    : public QObject
+{
+    Q_OBJECT
+public:
+    QScriptDebuggerConsoleGlobalObject(QObject *parent = 0);
+    ~QScriptDebuggerConsoleGlobalObject();
+
+    QScriptDebuggerCommandSchedulerInterface *scheduler() const;
+    void setScheduler(QScriptDebuggerCommandSchedulerInterface *scheduler);
+
+    QScriptDebuggerResponseHandlerInterface *responseHandler() const;
+    void setResponseHandler(QScriptDebuggerResponseHandlerInterface *responseHandler);
+
+    QScriptMessageHandlerInterface *messageHandler() const;
+    void setMessageHandler(QScriptMessageHandlerInterface *messageHandler);
+
+    QScriptDebuggerConsole *console() const;
+    void setConsole(QScriptDebuggerConsole *console);
+
+public Q_SLOTS:
+    // frontend
+    int scheduleInterrupt();
+    int scheduleContinue();
+    int scheduleStepInto(int count = 1);
+    int scheduleStepOver(int count = 1);
+    int scheduleStepOut();
+    int scheduleRunToLocation(const QString &fileName, int lineNumber);
+    int scheduleRunToLocation(qint64 scriptId, int lineNumber);
+    int scheduleForceReturn(int contextIndex, const QScriptDebuggerValue &value);
+
+    int scheduleSetBreakpoint(const QScriptBreakpointData &data);
+    int scheduleDeleteBreakpoint(int id);
+    int scheduleDeleteAllBreakpoints();
+    int scheduleGetBreakpoints();
+    int scheduleGetBreakpointData(int id);
+    int scheduleSetBreakpointData(int id, const QScriptBreakpointData &data);
+
+    int scheduleGetScripts();
+    int scheduleGetScriptData(qint64 id);
+    int scheduleScriptsCheckpoint();
+    int scheduleGetScriptsDelta();
+    int scheduleResolveScript(const QString &fileName);
+
+    int scheduleGetBacktrace();
+    int scheduleGetThisObject(int contextIndex);
+    int scheduleGetActivationObject(int contextIndex);
+    int scheduleGetContextCount();
+    int scheduleGetContextInfo(int contextIndex);
+
+    int scheduleNewScriptValueIterator(const QScriptDebuggerValue &object);
+    int scheduleGetPropertiesByIterator(int id, int count);
+    int scheduleDeleteScriptValueIterator(int id);
+
+    int scheduleEvaluate(int contextIndex, const QString &program,
+                         const QString &fileName = QString(),
+                         int lineNumber = 1);
+
+    int scheduleScriptValueToString(const QScriptDebuggerValue &value);
+
+    int scheduleClearExceptions();
+
+    int scheduleCommand(const QScriptDebuggerCommand &command);
+
+    // message handler
+    void message(const QString &text, const QString &fileName = QString(),
+                 int lineNumber = -1, int columnNumber = -1);
+    void warning(const QString &text, const QString &fileName = QString(),
+                 int lineNumber = -1, int columnNumber = -1);
+    void error(const QString &text, const QString &fileName = QString(),
+               int lineNumber = -1, int columnNumber = -1);
+
+    // console state
+    int getCurrentFrameIndex() const;
+    void setCurrentFrameIndex(int index);
+    qint64 getCurrentScriptId() const;
+    void setCurrentScriptId(qint64 id);
+    qint64 getSessionId() const;
+    int getCurrentLineNumber() const;
+    void setCurrentLineNumber(int lineNumber);
+
+    // command introspection
+    QScriptDebuggerConsoleCommandGroupMap getCommandGroups() const;
+    QScriptDebuggerConsoleCommand *findCommand(const QString &command) const;
+    QScriptDebuggerConsoleCommandList getCommandsInGroup(const QString &name) const;
+    QStringList getCommandCompletions(const QString &prefix) const;
+
+    bool checkSyntax(const QString &program);
+
+    void setEvaluateAction(int action);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerConsoleGlobalObject)
+    Q_DISABLE_COPY(QScriptDebuggerConsoleGlobalObject)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerconsolehistorianinterface_p.h b/src/scripttools/debugging/qscriptdebuggerconsolehistorianinterface_p.h
new file mode 100644
index 0000000..bac3c15
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsolehistorianinterface_p.h
@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCONSOLEHISTORIANINTERFACE_P_H
+#define QSCRIPTDEBUGGERCONSOLEHISTORIANINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+QT_BEGIN_NAMESPACE
+
+class QString;
+
+class Q_AUTOTEST_EXPORT QScriptDebuggerConsoleHistorianInterface
+{
+public:
+    virtual ~QScriptDebuggerConsoleHistorianInterface() {}
+
+    virtual int historyCount() const = 0;
+    virtual QString historyAt(int index) const = 0;
+    virtual void changeHistoryAt(int index, const QString &newHistory) = 0;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerconsolewidget.cpp b/src/scripttools/debugging/qscriptdebuggerconsolewidget.cpp
new file mode 100644
index 0000000..8824d48
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsolewidget.cpp
@@ -0,0 +1,444 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerconsolewidget_p.h"
+#include "qscriptdebuggerconsolewidgetinterface_p_p.h"
+#include "qscriptdebuggerconsolehistorianinterface_p.h"
+#include "qscriptcompletionproviderinterface_p.h"
+#include "qscriptcompletiontaskinterface_p.h"
+
+#include <QtCore/qdebug.h>
+#include <QtGui/qplaintextedit.h>
+#include <QtGui/qlabel.h>
+#include <QtGui/qlineedit.h>
+#include <QtGui/qlistview.h>
+#include <QtGui/qscrollbar.h>
+#include <QtGui/qboxlayout.h>
+#include <QtGui/qcompleter.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace {
+
+class PromptLabel : public QLabel
+{
+public:
+    PromptLabel(QWidget *parent = 0)
+        : QLabel(parent)
+    {
+        setFrameShape(QFrame::NoFrame);
+        setIndent(2);
+        setMargin(2);
+        setSizePolicy(QSizePolicy::Minimum, sizePolicy().verticalPolicy());
+        setAlignment(Qt::AlignHCenter);
+#ifndef QT_NO_STYLE_STYLESHEET
+        setStyleSheet(QLatin1String("background: white;"));
+#endif
+    }
+
+    QSize sizeHint() const {
+        QFontMetrics fm(font());
+        return fm.size(0, text()) + QSize(8, 0);
+    }
+};
+
+class InputEdit : public QLineEdit
+{
+public:
+    InputEdit(QWidget *parent = 0)
+        : QLineEdit(parent)
+    {
+        setFrame(false);
+        setSizePolicy(QSizePolicy::MinimumExpanding, sizePolicy().verticalPolicy());
+    }
+};
+
+class CommandLine : public QWidget
+{
+    Q_OBJECT
+public:
+    CommandLine(QWidget *parent = 0)
+        : QWidget(parent)
+    {
+        promptLabel = new PromptLabel();
+        inputEdit = new InputEdit();
+        QHBoxLayout *hbox = new QHBoxLayout(this);
+        hbox->setSpacing(0);
+        hbox->setMargin(0);
+        hbox->addWidget(promptLabel);
+        hbox->addWidget(inputEdit);
+
+        QObject::connect(inputEdit, SIGNAL(returnPressed()),
+                         this, SLOT(onReturnPressed()));
+        QObject::connect(inputEdit, SIGNAL(textEdited(QString)),
+                         this, SIGNAL(lineEdited(QString)));
+
+        setFocusProxy(inputEdit);
+    }
+
+    QString prompt() const
+    {
+        return promptLabel->text();
+    }
+    void setPrompt(const QString &prompt)
+    {
+        promptLabel->setText(prompt);
+    }
+
+    QString input() const
+    {
+        return inputEdit->text();
+    }
+    void setInput(const QString &input)
+    {
+        inputEdit->setText(input);
+    }
+
+    int cursorPosition() const
+    {
+        return inputEdit->cursorPosition();
+    }
+    void setCursorPosition(int position)
+    {
+        inputEdit->setCursorPosition(position);
+    }
+
+    QWidget *editor() const
+    {
+        return inputEdit;
+    }
+
+Q_SIGNALS:
+    void lineEntered(const QString &contents);
+    void lineEdited(const QString &contents);
+
+private Q_SLOTS:
+    void onReturnPressed()
+    {
+        QString text = inputEdit->text();
+        inputEdit->clear();
+        emit lineEntered(text);
+    }
+
+private:
+    PromptLabel *promptLabel;
+    InputEdit *inputEdit;
+};
+
+class QScriptDebuggerConsoleWidgetOutputEdit : public QPlainTextEdit
+{
+public:
+    QScriptDebuggerConsoleWidgetOutputEdit(QWidget *parent = 0)
+        : QPlainTextEdit(parent)
+    {
+        setFrameShape(QFrame::NoFrame);
+        setReadOnly(true);
+// ### there's no context menu when the edit can't have focus,
+//     even though you can select text in it.
+//        setFocusPolicy(Qt::NoFocus);
+        setMaximumBlockCount(2500);
+    }
+
+    void scrollToBottom()
+    {
+        QScrollBar *bar = verticalScrollBar();
+        bar->setValue(bar->maximum());
+    }
+
+    int charactersPerLine() const
+    {
+        QFontMetrics fm(font());
+        return width() / fm.maxWidth();
+    }
+};
+
+} // namespace
+
+class QScriptDebuggerConsoleWidgetPrivate
+    : public QScriptDebuggerConsoleWidgetInterfacePrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerConsoleWidget)
+public:
+    QScriptDebuggerConsoleWidgetPrivate();
+    ~QScriptDebuggerConsoleWidgetPrivate();
+
+    // private slots
+    void _q_onLineEntered(const QString &contents);
+    void _q_onLineEdited(const QString &contents);
+    void _q_onCompletionTaskFinished();
+
+    CommandLine *commandLine;
+    QScriptDebuggerConsoleWidgetOutputEdit *outputEdit;
+    int historyIndex;
+    QString newInput;
+};
+
+QScriptDebuggerConsoleWidgetPrivate::QScriptDebuggerConsoleWidgetPrivate()
+{
+    historyIndex = -1;
+}
+
+QScriptDebuggerConsoleWidgetPrivate::~QScriptDebuggerConsoleWidgetPrivate()
+{
+}
+
+void QScriptDebuggerConsoleWidgetPrivate::_q_onLineEntered(const QString &contents)
+{
+    Q_Q(QScriptDebuggerConsoleWidget);
+    outputEdit->appendPlainText(QString::fromLatin1("%0 %1").arg(commandLine->prompt()).arg(contents));
+    outputEdit->scrollToBottom();
+    historyIndex = -1;
+    newInput.clear();
+    emit q->lineEntered(contents);
+}
+
+void QScriptDebuggerConsoleWidgetPrivate::_q_onLineEdited(const QString &contents)
+{
+    if (historyIndex != -1) {
+    // ### try to get the bash behavior...
+#if 0
+        historian->changeHistoryAt(historyIndex, contents);
+#endif
+    } else {
+        newInput = contents;
+    }
+}
+
+static bool lengthLessThan(const QString &s1, const QString &s2)
+{
+    return s1.length() < s2.length();
+}
+
+// input must be sorted by length already
+static QString longestCommonPrefix(const QStringList &lst)
+{
+    QString result = lst.last();
+    for (int i = lst.size() - 2; (i >= 0) && !result.isEmpty(); --i) {
+        const QString &s = lst.at(i);
+        int j = 0;
+        for ( ; (j < qMin(s.length(), result.length())) && (s.at(j) == result.at(j)); ++j)
+            ;
+        result = result.left(j);
+    }
+    return result;
+}
+
+void QScriptDebuggerConsoleWidgetPrivate::_q_onCompletionTaskFinished()
+{
+    QScriptCompletionTaskInterface *task = 0;
+    task = qobject_cast<QScriptCompletionTaskInterface*>(q_func()->sender());
+    if (task->resultCount() == 1) {
+        QString completion = task->resultAt(0);
+        completion.append(task->appendix());
+        QString tmp = commandLine->input();
+        tmp.remove(task->position(), task->length());
+        tmp.insert(task->position(), completion);
+        commandLine->setInput(tmp);
+    } else if (task->resultCount() > 1) {
+        {
+            QStringList lst;
+            for (int i = 0; i < task->resultCount(); ++i)
+                lst.append(task->resultAt(i).mid(task->length()));
+            qSort(lst.begin(), lst.end(), lengthLessThan);
+            QString lcp = longestCommonPrefix(lst);
+            if (!lcp.isEmpty()) {
+                QString tmp = commandLine->input();
+                tmp.insert(task->position() + task->length(), lcp);
+                commandLine->setInput(tmp);
+            }
+        }
+
+        outputEdit->appendPlainText(QString::fromLatin1("%0 %1")
+                                    .arg(commandLine->prompt()).arg(commandLine->input()));
+        int maxLength = 0;
+        for (int i = 0; i < task->resultCount(); ++i)
+            maxLength = qMax(maxLength, task->resultAt(i).length());
+        Q_ASSERT(maxLength > 0);
+        int tab = 8;
+        int columns = qMax(1, outputEdit->charactersPerLine() / (maxLength + tab));
+        QString msg;
+        for (int i = 0; i < task->resultCount(); ++i) {
+            if (i != 0) {
+                if ((i % columns) == 0) {
+                    outputEdit->appendPlainText(msg);
+                    msg.clear();
+                } else {
+                    int pad = maxLength + tab - (msg.length() % (maxLength + tab));
+                    msg.append(QString(pad, QLatin1Char(' ')));
+                }
+            }
+            msg.append(task->resultAt(i));
+        }
+        if (!msg.isEmpty())
+            outputEdit->appendPlainText(msg);
+        outputEdit->scrollToBottom();
+    }
+    task->deleteLater();
+}
+
+QScriptDebuggerConsoleWidget::QScriptDebuggerConsoleWidget(QWidget *parent)
+    : QScriptDebuggerConsoleWidgetInterface(*new QScriptDebuggerConsoleWidgetPrivate, parent, 0)
+{
+    Q_D(QScriptDebuggerConsoleWidget);
+    d->commandLine = new CommandLine();
+    d->commandLine->setPrompt(QString::fromLatin1("qsdb>"));
+    d->outputEdit = new QScriptDebuggerConsoleWidgetOutputEdit();
+    QVBoxLayout *vbox = new QVBoxLayout(this);
+    vbox->setSpacing(0);
+    vbox->setMargin(0);
+    vbox->addWidget(d->outputEdit);
+    vbox->addWidget(d->commandLine);
+
+#if 0
+    QString sheet = QString::fromLatin1("background-color: black;"
+                                        "color: aquamarine;"
+                                        "font-size: 14px;"
+                                        "font-family: \"Monospace\"");
+#endif
+#ifndef QT_NO_STYLE_STYLESHEET
+    QString sheet = QString::fromLatin1("font-size: 14px; font-family: \"Monospace\";");
+    setStyleSheet(sheet);
+#endif
+
+    QObject::connect(d->commandLine, SIGNAL(lineEntered(QString)),
+                     this, SLOT(_q_onLineEntered(QString)));
+    QObject::connect(d->commandLine, SIGNAL(lineEdited(QString)),
+                     this, SLOT(_q_onLineEdited(QString)));
+}
+
+QScriptDebuggerConsoleWidget::~QScriptDebuggerConsoleWidget()
+{
+}
+
+void QScriptDebuggerConsoleWidget::message(
+    QtMsgType type, const QString &text, const QString &fileName,
+    int lineNumber, int columnNumber, const QVariant &/*data*/)
+{
+    Q_D(QScriptDebuggerConsoleWidget);
+    QString msg;
+    if (!fileName.isEmpty() || (lineNumber != -1)) {
+        if (!fileName.isEmpty())
+            msg.append(fileName);
+        else
+            msg.append(QLatin1String("<noname>"));
+        if (lineNumber != -1) {
+            msg.append(QLatin1Char(':'));
+            msg.append(QString::number(lineNumber));
+            if (columnNumber != -1) {
+                msg.append(QLatin1Char(':'));
+                msg.append(QString::number(columnNumber));
+            }
+        }
+        msg.append(QLatin1String(": "));
+    }
+    msg.append(text);
+    QTextCharFormat oldFmt = d->outputEdit->currentCharFormat();
+    QTextCharFormat fmt(oldFmt);
+    if (type == QtCriticalMsg) {
+        fmt.setForeground(Qt::red);
+        d->outputEdit->setCurrentCharFormat(fmt);
+    }
+    d->outputEdit->appendPlainText(msg);
+    d->outputEdit->setCurrentCharFormat(oldFmt);
+    d->outputEdit->scrollToBottom();
+}
+
+void QScriptDebuggerConsoleWidget::setLineContinuationMode(bool enabled)
+{
+    Q_D(QScriptDebuggerConsoleWidget);
+    QString prompt = enabled
+                     ? QString::fromLatin1("....")
+                     : QString::fromLatin1("qsdb>");
+    d->commandLine->setPrompt(prompt);
+}
+
+void QScriptDebuggerConsoleWidget::clear()
+{
+    Q_D(QScriptDebuggerConsoleWidget);
+    d->outputEdit->clear();
+}
+
+void QScriptDebuggerConsoleWidget::keyPressEvent(QKeyEvent *event)
+{
+    Q_D(QScriptDebuggerConsoleWidget);
+    if (event->key() == Qt::Key_Up) {
+        if (d->historyIndex+1 == d->historian->historyCount())
+            return;
+        QString cmd = d->historian->historyAt(++d->historyIndex);
+        d->commandLine->setInput(cmd);
+    } else if (event->key() == Qt::Key_Down) {
+        if (d->historyIndex == -1) {
+            // nothing to do
+        } else if (d->historyIndex == 0) {
+            d->commandLine->setInput(d->newInput);
+            --d->historyIndex;
+        } else {
+            QString cmd = d->historian->historyAt(--d->historyIndex);
+            d->commandLine->setInput(cmd);
+        }
+    } else if (event->key() == Qt::Key_Tab) {
+        QScriptCompletionTaskInterface *task = 0;
+        task = d->completionProvider->createCompletionTask(
+            d->commandLine->input(), d->commandLine->cursorPosition(),
+            /*frameIndex=*/-1, // current frame
+            QScriptCompletionProviderInterface::ConsoleCommandCompletion);
+        QObject::connect(task, SIGNAL(finished()),
+                         this, SLOT(_q_onCompletionTaskFinished()));
+        task->start();
+    } else {
+        QScriptDebuggerConsoleWidgetInterface::keyPressEvent(event);
+    }
+}
+
+bool QScriptDebuggerConsoleWidget::focusNextPrevChild(bool b)
+{
+    Q_D(QScriptDebuggerConsoleWidget);
+    if (d->outputEdit->hasFocus())
+        return QScriptDebuggerConsoleWidgetInterface::focusNextPrevChild(b);
+    else
+        return false;
+}
+
+QT_END_NAMESPACE
+
+#include "qscriptdebuggerconsolewidget.moc"
+
+#include "moc_qscriptdebuggerconsolewidget_p.cpp"
diff --git a/src/scripttools/debugging/qscriptdebuggerconsolewidget_p.h b/src/scripttools/debugging/qscriptdebuggerconsolewidget_p.h
new file mode 100644
index 0000000..88b76fd
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsolewidget_p.h
@@ -0,0 +1,98 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCONSOLEWIDGET_P_H
+#define QSCRIPTDEBUGGERCONSOLEWIDGET_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscriptdebuggerconsolewidgetinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerConsoleWidgetPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerConsoleWidget:
+    public QScriptDebuggerConsoleWidgetInterface
+{
+    Q_OBJECT
+public:
+    QScriptDebuggerConsoleWidget(QWidget *parent = 0);
+    ~QScriptDebuggerConsoleWidget();
+
+    void message(QtMsgType type, const QString &text,
+                 const QString &fileName = QString(),
+                 int lineNumber = -1, int columnNumber = -1,
+                 const QVariant &data = QVariant());
+
+    void setLineContinuationMode(bool enabled);
+
+    void clear();
+
+protected:
+    void keyPressEvent(QKeyEvent *event);
+    bool focusNextPrevChild(bool);
+
+protected:
+    QScriptDebuggerConsoleWidget(
+        QScriptDebuggerConsoleWidgetPrivate &dd,
+        QWidget *parent);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerConsoleWidget)
+    Q_DISABLE_COPY(QScriptDebuggerConsoleWidget)
+
+    Q_PRIVATE_SLOT(d_func(), void _q_onLineEntered(const QString &))
+    Q_PRIVATE_SLOT(d_func(), void _q_onLineEdited(const QString &))
+    Q_PRIVATE_SLOT(d_func(), void _q_onCompletionTaskFinished())
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerconsolewidgetinterface.cpp b/src/scripttools/debugging/qscriptdebuggerconsolewidgetinterface.cpp
new file mode 100644
index 0000000..0c63d68
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsolewidgetinterface.cpp
@@ -0,0 +1,94 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerconsolewidgetinterface_p.h"
+#include "qscriptdebuggerconsolewidgetinterface_p_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QScriptDebuggerConsoleWidgetInterfacePrivate::QScriptDebuggerConsoleWidgetInterfacePrivate()
+{
+    historian = 0;
+    completionProvider = 0;
+}
+
+QScriptDebuggerConsoleWidgetInterfacePrivate::~QScriptDebuggerConsoleWidgetInterfacePrivate()
+{
+}
+
+QScriptDebuggerConsoleWidgetInterface::~QScriptDebuggerConsoleWidgetInterface()
+{
+}
+
+QScriptDebuggerConsoleWidgetInterface::QScriptDebuggerConsoleWidgetInterface(
+    QScriptDebuggerConsoleWidgetInterfacePrivate &dd,
+    QWidget *parent, Qt::WindowFlags flags)
+    : QWidget(dd, parent, flags)
+{
+}
+
+QScriptDebuggerConsoleHistorianInterface *QScriptDebuggerConsoleWidgetInterface::commandHistorian() const
+{
+    Q_D(const QScriptDebuggerConsoleWidgetInterface);
+    return d->historian;
+}
+
+void QScriptDebuggerConsoleWidgetInterface::setCommandHistorian(
+    QScriptDebuggerConsoleHistorianInterface *historian)
+{
+    Q_D(QScriptDebuggerConsoleWidgetInterface);
+    d->historian = historian;
+}
+
+QScriptCompletionProviderInterface *QScriptDebuggerConsoleWidgetInterface::completionProvider() const
+{
+    Q_D(const QScriptDebuggerConsoleWidgetInterface);
+    return d->completionProvider;
+}
+
+void QScriptDebuggerConsoleWidgetInterface::setCompletionProvider(
+    QScriptCompletionProviderInterface *completionProvider)
+{
+    Q_D(QScriptDebuggerConsoleWidgetInterface);
+    d->completionProvider = completionProvider;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerconsolewidgetinterface_p.h b/src/scripttools/debugging/qscriptdebuggerconsolewidgetinterface_p.h
new file mode 100644
index 0000000..e4dc22c
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsolewidgetinterface_p.h
@@ -0,0 +1,103 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCONSOLEWIDGETINTERFACE_P_H
+#define QSCRIPTDEBUGGERCONSOLEWIDGETINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/qwidget.h>
+
+#include "qscriptmessagehandlerinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerConsoleHistorianInterface;
+class QScriptCompletionProviderInterface;
+
+class QScriptDebuggerConsoleWidgetInterfacePrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerConsoleWidgetInterface:
+    public QWidget,
+    public QScriptMessageHandlerInterface
+{
+    Q_OBJECT
+public:
+    enum InputMode {
+        NormalInputMode,
+        PartialInputMode
+    };
+
+    ~QScriptDebuggerConsoleWidgetInterface();
+
+    QScriptDebuggerConsoleHistorianInterface *commandHistorian() const;
+    void setCommandHistorian(QScriptDebuggerConsoleHistorianInterface *historian);
+
+    QScriptCompletionProviderInterface *completionProvider() const;
+    void setCompletionProvider(QScriptCompletionProviderInterface *completionProvider);
+
+    virtual void setLineContinuationMode(bool enabled) = 0;
+
+    virtual void clear() = 0;
+
+Q_SIGNALS:
+    void lineEntered(const QString &contents);
+
+protected:
+    QScriptDebuggerConsoleWidgetInterface(QScriptDebuggerConsoleWidgetInterfacePrivate &dd,
+                                          QWidget *parent, Qt::WindowFlags flags);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerConsoleWidgetInterface)
+    Q_DISABLE_COPY(QScriptDebuggerConsoleWidgetInterface)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerconsolewidgetinterface_p_p.h b/src/scripttools/debugging/qscriptdebuggerconsolewidgetinterface_p_p.h
new file mode 100644
index 0000000..c4c8fcf
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerconsolewidgetinterface_p_p.h
@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERCONSOLEWIDGETINTERFACE_P_P_H
+#define QSCRIPTDEBUGGERCONSOLEWIDGETINTERFACE_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qwidget_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerConsoleHistorianInterface;
+class QScriptCompletionProviderInterface;
+
+class QScriptDebuggerConsoleWidgetInterface;
+class QScriptDebuggerConsoleWidgetInterfacePrivate
+    : public QWidgetPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerConsoleWidgetInterface)
+public:
+    QScriptDebuggerConsoleWidgetInterfacePrivate();
+    ~QScriptDebuggerConsoleWidgetInterfacePrivate();
+
+    QScriptDebuggerConsoleHistorianInterface *historian;
+    QScriptCompletionProviderInterface *completionProvider;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerevent.cpp b/src/scripttools/debugging/qscriptdebuggerevent.cpp
new file mode 100644
index 0000000..26a1c26
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerevent.cpp
@@ -0,0 +1,320 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerevent_p.h"
+#include "qscriptdebuggervalue_p.h"
+
+#include <QtCore/qhash.h>
+#include <QtCore/qdatastream.h>
+
+Q_DECLARE_METATYPE(QScriptDebuggerValue)
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerEventPrivate
+{
+public:
+    QScriptDebuggerEventPrivate();
+    ~QScriptDebuggerEventPrivate();
+
+    QScriptDebuggerEvent::Type type;
+    QHash<QScriptDebuggerEvent::Attribute, QVariant> attributes;
+};
+
+QScriptDebuggerEventPrivate::QScriptDebuggerEventPrivate()
+    : type(QScriptDebuggerEvent::None)
+{
+}
+
+QScriptDebuggerEventPrivate::~QScriptDebuggerEventPrivate()
+{
+}
+
+QScriptDebuggerEvent::QScriptDebuggerEvent()
+    : d_ptr(new QScriptDebuggerEventPrivate)
+{
+    d_ptr->type = None;
+}
+
+QScriptDebuggerEvent::QScriptDebuggerEvent(Type type)
+    : d_ptr(new QScriptDebuggerEventPrivate)
+{
+    d_ptr->type = type;
+}
+
+QScriptDebuggerEvent::QScriptDebuggerEvent(Type type, qint64 scriptId,
+                                           int lineNumber, int columnNumber)
+    : d_ptr(new QScriptDebuggerEventPrivate)
+{
+    d_ptr->type = type;
+    d_ptr->attributes[ScriptID] = scriptId;
+    d_ptr->attributes[LineNumber] = lineNumber;
+    d_ptr->attributes[ColumnNumber] = columnNumber;
+}
+
+QScriptDebuggerEvent::QScriptDebuggerEvent(const QScriptDebuggerEvent &other)
+    : d_ptr(new QScriptDebuggerEventPrivate)
+{
+    *d_ptr = *other.d_ptr;
+}
+
+QScriptDebuggerEvent::~QScriptDebuggerEvent()
+{
+}
+
+QScriptDebuggerEvent &QScriptDebuggerEvent::operator=(const QScriptDebuggerEvent &other)
+{
+    *d_ptr = *other.d_ptr;
+    return *this;
+}
+
+QScriptDebuggerEvent::Type QScriptDebuggerEvent::type() const
+{
+    Q_D(const QScriptDebuggerEvent);
+    return d->type;
+}
+
+QVariant QScriptDebuggerEvent::attribute(Attribute attribute,
+                                         const QVariant &defaultValue) const
+{
+    Q_D(const QScriptDebuggerEvent);
+    return d->attributes.value(attribute, defaultValue);
+}
+
+void QScriptDebuggerEvent::setAttribute(Attribute attribute,
+                                        const QVariant &value)
+{
+    Q_D(QScriptDebuggerEvent);
+    if (!value.isValid())
+        d->attributes.remove(attribute);
+    else
+        d->attributes[attribute] = value;
+}
+
+QHash<QScriptDebuggerEvent::Attribute, QVariant> QScriptDebuggerEvent::attributes() const
+{
+    Q_D(const QScriptDebuggerEvent);
+    return d->attributes;
+}
+
+qint64 QScriptDebuggerEvent::scriptId() const
+{
+    Q_D(const QScriptDebuggerEvent);
+    return d->attributes.value(ScriptID, -1).toLongLong();
+}
+
+void QScriptDebuggerEvent::setScriptId(qint64 id)
+{
+    Q_D(QScriptDebuggerEvent);
+    d->attributes[ScriptID] = id;
+}
+
+QString QScriptDebuggerEvent::fileName() const
+{
+    Q_D(const QScriptDebuggerEvent);
+    return d->attributes.value(FileName).toString();
+}
+
+void QScriptDebuggerEvent::setFileName(const QString &fileName)
+{
+    Q_D(QScriptDebuggerEvent);
+    d->attributes[FileName] = fileName;
+}
+
+int QScriptDebuggerEvent::lineNumber() const
+{
+    Q_D(const QScriptDebuggerEvent);
+    return d->attributes.value(LineNumber, -1).toInt();
+}
+
+void QScriptDebuggerEvent::setLineNumber(int lineNumber)
+{
+    Q_D(QScriptDebuggerEvent);
+    d->attributes[LineNumber] = lineNumber;
+}
+
+int QScriptDebuggerEvent::columnNumber() const
+{
+    Q_D(const QScriptDebuggerEvent);
+    return d->attributes.value(ColumnNumber, -1).toInt();
+}
+
+void QScriptDebuggerEvent::setColumnNumber(int columnNumber)
+{
+    Q_D(QScriptDebuggerEvent);
+    d->attributes[ColumnNumber] = columnNumber;
+}
+
+int QScriptDebuggerEvent::breakpointId() const
+{
+    Q_D(const QScriptDebuggerEvent);
+    return d->attributes.value(BreakpointID, -1).toInt();
+}
+
+void QScriptDebuggerEvent::setBreakpointId(int id)
+{
+    Q_D(QScriptDebuggerEvent);
+    d->attributes[BreakpointID] = id;
+}
+
+QString QScriptDebuggerEvent::message() const
+{
+    Q_D(const QScriptDebuggerEvent);
+    return d->attributes.value(Message).toString();
+}
+
+void QScriptDebuggerEvent::setMessage(const QString &message)
+{
+    Q_D(QScriptDebuggerEvent);
+    d->attributes[Message] = message;
+}
+
+QScriptDebuggerValue QScriptDebuggerEvent::scriptValue() const
+{
+    Q_D(const QScriptDebuggerEvent);
+    return qvariant_cast<QScriptDebuggerValue>(d->attributes[Value]);
+}
+
+void QScriptDebuggerEvent::setScriptValue(const QScriptDebuggerValue &value)
+{
+    Q_D(QScriptDebuggerEvent);
+    d->attributes[Value] = QVariant::fromValue(value);
+}
+
+void QScriptDebuggerEvent::setNestedEvaluate(bool nested)
+{
+    Q_D(QScriptDebuggerEvent);
+    d->attributes[IsNestedEvaluate] = nested;
+}
+
+bool QScriptDebuggerEvent::isNestedEvaluate() const
+{
+    Q_D(const QScriptDebuggerEvent);
+    return d->attributes.value(IsNestedEvaluate).toBool();
+}
+
+void QScriptDebuggerEvent::setHasExceptionHandler(bool hasHandler)
+{
+    Q_D(QScriptDebuggerEvent);
+    d->attributes[HasExceptionHandler] = hasHandler;
+}
+
+bool QScriptDebuggerEvent::hasExceptionHandler() const
+{
+    Q_D(const QScriptDebuggerEvent);
+    return d->attributes.value(HasExceptionHandler).toBool();
+}
+
+/*!
+  Returns true if this QScriptDebuggerEvent is equal to the \a other
+  event, otherwise returns false.
+*/
+bool QScriptDebuggerEvent::operator==(const QScriptDebuggerEvent &other) const
+{
+    Q_D(const QScriptDebuggerEvent);
+    const QScriptDebuggerEventPrivate *od = other.d_func();
+    if (d == od)
+        return true;
+    if (!d || !od)
+        return false;
+    return ((d->type == od->type)
+            && (d->attributes == od->attributes));
+}
+
+/*!
+  Returns true if this QScriptDebuggerEvent is not equal to the \a
+  other event, otherwise returns false.
+*/
+bool QScriptDebuggerEvent::operator!=(const QScriptDebuggerEvent &other) const
+{
+    return !(*this == other);
+}
+
+/*!
+  \fn QDataStream &operator<<(QDataStream &stream, const QScriptDebuggerEvent &event)
+  \relates QScriptDebuggerEvent
+
+  Writes the given \a event to the specified \a stream.
+*/
+QDataStream &operator<<(QDataStream &out, const QScriptDebuggerEvent &event)
+{
+    const QScriptDebuggerEventPrivate *d = event.d_ptr.data();
+    out << (quint32)d->type;
+    out << (qint32)d->attributes.size();
+    QHash<QScriptDebuggerEvent::Attribute, QVariant>::const_iterator it;
+    for (it = d->attributes.constBegin(); it != d->attributes.constEnd(); ++it) {
+        out << (quint32)it.key();
+        out << it.value();
+    }
+    return out;
+}
+
+/*!
+  \fn QDataStream &operator>>(QDataStream &stream, QScriptDebuggerEvent &event)
+  \relates QScriptDebuggerEvent
+
+  Reads a QScriptDebuggerEvent from the specified \a stream into the
+  given \a event.
+*/
+QDataStream &operator>>(QDataStream &in, QScriptDebuggerEvent &event)
+{
+    QScriptDebuggerEventPrivate *d = event.d_ptr.data();
+
+    quint32 type;
+    in >> type;
+    d->type = QScriptDebuggerEvent::Type(type);
+
+    qint32 attribCount;
+    in >> attribCount;
+    QHash<QScriptDebuggerEvent::Attribute, QVariant> attribs;
+    for (qint32 i = 0; i < attribCount; ++i) {
+        quint32 key;
+        in >> key;
+        QVariant value;
+        in >> value;
+        attribs[QScriptDebuggerEvent::Attribute(key)] = value;
+    }
+    d->attributes = attribs;
+
+    return in;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerevent_p.h b/src/scripttools/debugging/qscriptdebuggerevent_p.h
new file mode 100644
index 0000000..29c0129
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerevent_p.h
@@ -0,0 +1,164 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGEREVENT_P_H
+#define QSCRIPTDEBUGGEREVENT_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+#include <QtCore/qcoreevent.h>
+#include <QtCore/qhash.h>
+#include <QtCore/qvariant.h>
+#include <QtCore/qscopedpointer.h>
+
+QT_BEGIN_NAMESPACE
+
+class QDataStream;
+class QScriptDebuggerValue;
+
+class QScriptDebuggerEventPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerEvent
+{
+public:
+    friend Q_AUTOTEST_EXPORT QDataStream &operator<<(QDataStream &, const QScriptDebuggerEvent &);
+    friend Q_AUTOTEST_EXPORT QDataStream &operator>>(QDataStream &, QScriptDebuggerEvent &);
+
+    enum Type {
+        None,
+        Interrupted,
+        SteppingFinished,
+        LocationReached,
+        Breakpoint,
+        Exception,
+        Trace,
+        InlineEvalFinished,
+        DebuggerInvocationRequest,
+        ForcedReturn,
+        UserEvent = 1000,
+        MaxUserEvent = 32767
+    };
+
+    enum Attribute {
+        ScriptID,
+        FileName,
+        BreakpointID,
+        LineNumber,
+        ColumnNumber,
+        Value,
+        Message,
+        IsNestedEvaluate,
+        HasExceptionHandler,
+        UserAttribute = 1000,
+        MaxUserAttribute = 32767
+    };
+
+    QScriptDebuggerEvent();
+    QScriptDebuggerEvent(Type type);
+    QScriptDebuggerEvent(Type type, qint64 scriptId, int lineNumber, int columnNumber);
+    QScriptDebuggerEvent(const QScriptDebuggerEvent &other);
+    ~QScriptDebuggerEvent();
+
+    Type type() const;
+
+    QVariant attribute(Attribute attribute,
+                       const QVariant &defaultValue = QVariant()) const;
+    void setAttribute(Attribute attribute, const QVariant &value);
+    QHash<Attribute, QVariant> attributes() const;
+
+    qint64 scriptId() const;
+    void setScriptId(qint64 id);
+    QString fileName() const;
+    void setFileName(const QString &fileName);
+    int lineNumber() const;
+    void setLineNumber(int lineNumber);
+    int columnNumber() const;
+    void setColumnNumber(int columnNumber);
+    int breakpointId() const;
+    void setBreakpointId(int id);
+    QString message() const;
+    void setMessage(const QString &message);
+    QScriptDebuggerValue scriptValue() const;
+    void setScriptValue(const QScriptDebuggerValue &value);
+    void setNestedEvaluate(bool nested);
+    bool isNestedEvaluate() const;
+    void setHasExceptionHandler(bool hasHandler);
+    bool hasExceptionHandler() const;
+
+    QScriptDebuggerEvent &operator=(const QScriptDebuggerEvent &other);
+
+    bool operator==(const QScriptDebuggerEvent &other) const;
+    bool operator!=(const QScriptDebuggerEvent &other) const;
+
+private:
+    QScopedPointer<QScriptDebuggerEventPrivate> d_ptr;
+
+    Q_DECLARE_PRIVATE(QScriptDebuggerEvent)
+};
+
+Q_AUTOTEST_EXPORT QDataStream &operator<<(QDataStream &, const QScriptDebuggerEvent &);
+Q_AUTOTEST_EXPORT QDataStream &operator>>(QDataStream &, QScriptDebuggerEvent &);
+
+// helper class that's used to transport a debugger event through the Qt event loop
+class QScriptDebuggerEventEvent : public QEvent
+{
+public:
+    QScriptDebuggerEventEvent(const QScriptDebuggerEvent &event)
+        : QEvent(QEvent::Type(QEvent::User+1)), m_event(event) {}
+    ~QScriptDebuggerEventEvent() {}
+    const QScriptDebuggerEvent &event() const
+        { return m_event; }
+private:
+    QScriptDebuggerEvent m_event;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggereventhandlerinterface_p.h b/src/scripttools/debugging/qscriptdebuggereventhandlerinterface_p.h
new file mode 100644
index 0000000..1eeaff5
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggereventhandlerinterface_p.h
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGEREVENTHANDLERINTERFACE_P_H
+#define QSCRIPTDEBUGGEREVENTHANDLERINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerEvent;
+
+class Q_AUTOTEST_EXPORT QScriptDebuggerEventHandlerInterface
+{
+public:
+    virtual ~QScriptDebuggerEventHandlerInterface() {}
+
+    virtual bool debuggerEvent(const QScriptDebuggerEvent &event) = 0;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerfrontend.cpp b/src/scripttools/debugging/qscriptdebuggerfrontend.cpp
new file mode 100644
index 0000000..aaf3427
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerfrontend.cpp
@@ -0,0 +1,235 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerfrontend_p.h"
+#include "qscriptdebuggerfrontend_p_p.h"
+#include "qscriptdebuggercommand_p.h"
+#include "qscriptdebuggerevent_p.h"
+#include "qscriptdebuggerresponse_p.h"
+#include "qscriptdebuggereventhandlerinterface_p.h"
+#include "qscriptdebuggerresponsehandlerinterface_p.h"
+
+#include <QtCore/qcoreevent.h>
+#include <QtCore/qcoreapplication.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \class QScriptDebuggerFrontend
+  \since 4.5
+  \internal
+
+  \brief The QScriptDebuggerFrontend class is the base class of debugger front-ends.
+*/
+
+// helper class that's used to handle our custom Qt events
+class QScriptDebuggerFrontendEventReceiver : public QObject
+{
+public:
+    QScriptDebuggerFrontendEventReceiver(QScriptDebuggerFrontendPrivate *frontend,
+                                         QObject *parent = 0);
+    ~QScriptDebuggerFrontendEventReceiver();
+
+    bool event(QEvent *);
+
+private:
+    QScriptDebuggerFrontendPrivate *m_frontend;
+};
+
+QScriptDebuggerFrontendEventReceiver::QScriptDebuggerFrontendEventReceiver(
+    QScriptDebuggerFrontendPrivate *frontend, QObject *parent)
+    : QObject(parent), m_frontend(frontend)
+{
+}
+    
+QScriptDebuggerFrontendEventReceiver::~QScriptDebuggerFrontendEventReceiver()
+{
+}
+
+bool QScriptDebuggerFrontendEventReceiver::event(QEvent *e)
+{
+    return m_frontend->event(e);
+}
+
+
+QScriptDebuggerFrontendPrivate::QScriptDebuggerFrontendPrivate()
+{
+    eventHandler = 0;
+    nextCommandId = 0;
+    eventReceiver = new QScriptDebuggerFrontendEventReceiver(this);
+}
+
+QScriptDebuggerFrontendPrivate::~QScriptDebuggerFrontendPrivate()
+{
+    delete eventReceiver;
+}
+
+void QScriptDebuggerFrontendPrivate::postEvent(QEvent *e)
+{
+    QCoreApplication::postEvent(eventReceiver, e);
+}
+
+bool QScriptDebuggerFrontendPrivate::event(QEvent *e)
+{
+    Q_Q(QScriptDebuggerFrontend);
+    if (e->type() == QEvent::User+1) {
+        QScriptDebuggerEventEvent *de = static_cast<QScriptDebuggerEventEvent*>(e);
+        bool handled = q->notifyEvent(de->event());
+        if (handled) {
+            q->scheduleCommand(QScriptDebuggerCommand::resumeCommand(),
+                               /*responseHandler=*/0);
+        }
+        return true;
+    } else if (e->type() == QEvent::User+2) {
+        processCommands();
+        return true;
+    }
+    return false;
+}
+
+void QScriptDebuggerFrontendPrivate::processCommands()
+{
+    Q_Q(QScriptDebuggerFrontend);
+    while (!pendingCommands.isEmpty()) {
+        QScriptDebuggerCommand command(pendingCommands.takeFirst());
+        int id = pendingCommandIds.takeFirst();
+        q->processCommand(id, command);
+    }
+}
+
+QScriptDebuggerFrontend::QScriptDebuggerFrontend()
+    : d_ptr(new QScriptDebuggerFrontendPrivate())
+{
+    d_ptr->q_ptr = this;
+}
+
+QScriptDebuggerFrontend::~QScriptDebuggerFrontend()
+{
+}
+
+QScriptDebuggerFrontend::QScriptDebuggerFrontend(QScriptDebuggerFrontendPrivate &dd)
+    : d_ptr(&dd)
+{
+    d_ptr->q_ptr = this;
+}
+
+QScriptDebuggerEventHandlerInterface *QScriptDebuggerFrontend::eventHandler() const
+{
+    Q_D(const QScriptDebuggerFrontend);
+    return d->eventHandler;
+}
+
+void QScriptDebuggerFrontend::setEventHandler(QScriptDebuggerEventHandlerInterface *eventHandler)
+{
+    Q_D(QScriptDebuggerFrontend);
+    d->eventHandler = eventHandler;
+}
+
+/*!
+  Schedules the given \a command for execution by this front-end,
+  and returns a unique identifier associated with this command.
+
+  Subclasses can call this function to schedule custom commands.
+
+  \sa notifyCommandFinished()
+*/
+int QScriptDebuggerFrontend::scheduleCommand(
+    const QScriptDebuggerCommand &command,
+    QScriptDebuggerResponseHandlerInterface *responseHandler)
+{
+    Q_D(QScriptDebuggerFrontend);
+    int id = ++d->nextCommandId;
+    d->pendingCommands.append(command);
+    d->pendingCommandIds.append(id);
+    if (responseHandler)
+        d->responseHandlers.insert(id, responseHandler);
+    if (d->pendingCommands.size() == 1) {
+        QEvent *e = new QEvent(QEvent::Type(QEvent::User+2)); // ProcessCommands
+        d->postEvent(e);
+    }
+    return id;
+}
+
+/*!
+  Subclasses should call this function when the command identified by
+  the given \a id has finished and produced the given \a response.
+
+  \sa processCommand(), notifyEvent()
+*/
+void QScriptDebuggerFrontend::notifyCommandFinished(int id, const QScriptDebuggerResponse &response)
+{
+    Q_D(QScriptDebuggerFrontend);
+    if (d->responseHandlers.contains(id)) {
+        QScriptDebuggerResponseHandlerInterface *handler = d->responseHandlers.take(id);
+        Q_ASSERT(handler != 0);
+        handler->handleResponse(response, id);
+    }
+}
+
+/*!
+  Subclasses should call this function when the given \a event is
+  received from the back-end.
+
+  \sa notifyCommandFinished(), QScriptDebuggerBackend::event()
+*/
+bool QScriptDebuggerFrontend::notifyEvent(const QScriptDebuggerEvent &event)
+{
+    Q_D(QScriptDebuggerFrontend);
+    if (d->eventHandler)
+        return d->eventHandler->debuggerEvent(event);
+    return false;
+}
+
+int QScriptDebuggerFrontend::scheduledCommandCount() const
+{
+    Q_D(const QScriptDebuggerFrontend);
+    return d->nextCommandId;
+}
+
+/*!
+  \fn void QScriptDebuggerFrontend::processCommand(int id, const QScriptDebuggerCommand &command)
+
+  Subclasses must reimplement this function to process the given \a command
+  identified by \a id. Call notifyCommandFinished() when processing is
+  complete.
+*/
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerfrontend_p.h b/src/scripttools/debugging/qscriptdebuggerfrontend_p.h
new file mode 100644
index 0000000..37de7a4
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerfrontend_p.h
@@ -0,0 +1,102 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERFRONTEND_P_H
+#define QSCRIPTDEBUGGERFRONTEND_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+#include <QtCore/qscopedpointer.h>
+#include <QtCore/qstring.h>
+
+#include "qscriptdebuggercommandschedulerinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerEventHandlerInterface;
+class QScriptDebuggerCommand;
+class QScriptDebuggerEvent;
+class QScriptDebuggerResponse;
+
+class QScriptDebuggerFrontendPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerFrontend
+    : public QScriptDebuggerCommandSchedulerInterface
+{
+public:
+    QScriptDebuggerFrontend();
+    virtual ~QScriptDebuggerFrontend();
+
+    QScriptDebuggerEventHandlerInterface *eventHandler() const;
+    void setEventHandler(QScriptDebuggerEventHandlerInterface *eventHandler);
+
+    int scheduleCommand(const QScriptDebuggerCommand &command,
+                        QScriptDebuggerResponseHandlerInterface *responseHandler);
+
+    int scheduledCommandCount() const;
+
+protected:
+    void notifyCommandFinished(int id, const QScriptDebuggerResponse &response);
+    bool notifyEvent(const QScriptDebuggerEvent &event);
+
+    virtual void processCommand(int id, const QScriptDebuggerCommand &command) = 0;
+
+protected:
+    QScriptDebuggerFrontend(QScriptDebuggerFrontendPrivate &dd);
+    QScopedPointer<QScriptDebuggerFrontendPrivate> d_ptr;
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerFrontend)
+    Q_DISABLE_COPY(QScriptDebuggerFrontend)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerfrontend_p_p.h b/src/scripttools/debugging/qscriptdebuggerfrontend_p_p.h
new file mode 100644
index 0000000..be07bcb
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerfrontend_p_p.h
@@ -0,0 +1,93 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERFRONTEND_P_P_H
+#define QSCRIPTDEBUGGERFRONTEND_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+#include <QtCore/qlist.h>
+#include <QtCore/qhash.h>
+
+#include "qscriptdebuggercommand_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerEventHandlerInterface;
+class QScriptDebuggerResponseHandlerInterface;
+class QEvent;
+
+class QScriptDebuggerFrontend;
+class QScriptDebuggerFrontendPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerFrontend)
+public:
+    QScriptDebuggerFrontendPrivate();
+    virtual ~QScriptDebuggerFrontendPrivate();
+
+    void postEvent(QEvent *e);
+    virtual bool event(QEvent *);
+    void processCommands();
+
+    QScriptDebuggerEventHandlerInterface *eventHandler;
+    QList<QScriptDebuggerCommand> pendingCommands;
+    QList<int> pendingCommandIds;
+    QHash<int, QScriptDebuggerResponseHandlerInterface*> responseHandlers;
+    int nextCommandId;
+    QObject *eventReceiver;
+
+    QScriptDebuggerFrontend *q_ptr;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerjob.cpp b/src/scripttools/debugging/qscriptdebuggerjob.cpp
new file mode 100644
index 0000000..458a25f
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerjob.cpp
@@ -0,0 +1,110 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerjob_p.h"
+#include "qscriptdebuggerjob_p_p.h"
+#include "qscriptdebuggerjobschedulerinterface_p.h"
+
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \class QScriptDebuggerJob
+  \since 4.5
+  \internal
+
+  \brief The QScriptDebuggerJob class is the base class of debugger jobs.
+
+*/
+
+QScriptDebuggerJobPrivate::QScriptDebuggerJobPrivate()
+{
+}
+
+QScriptDebuggerJobPrivate::~QScriptDebuggerJobPrivate()
+{
+}
+
+QScriptDebuggerJobPrivate *QScriptDebuggerJobPrivate::get(QScriptDebuggerJob *q)
+{
+    return q->d_func();
+}
+
+QScriptDebuggerJob::QScriptDebuggerJob()
+    : d_ptr(new QScriptDebuggerJobPrivate)
+{
+    d_ptr->q_ptr = this;
+    d_ptr->jobScheduler = 0;
+}
+
+QScriptDebuggerJob::QScriptDebuggerJob(QScriptDebuggerJobPrivate &dd)
+    : d_ptr(&dd)
+{
+    d_ptr->q_ptr = this;
+    d_ptr->jobScheduler = 0;
+}
+
+QScriptDebuggerJob::~QScriptDebuggerJob()
+{
+}
+
+void QScriptDebuggerJob::finish()
+{
+    Q_D(QScriptDebuggerJob);
+    Q_ASSERT(d->jobScheduler != 0);
+    d->jobScheduler->finishJob(this);
+}
+
+void QScriptDebuggerJob::hibernateUntilEvaluateFinished()
+{
+    Q_D(QScriptDebuggerJob);
+    Q_ASSERT(d->jobScheduler != 0);
+    d->jobScheduler->hibernateUntilEvaluateFinished(this);
+}
+
+void QScriptDebuggerJob::evaluateFinished(const QScriptDebuggerValue &)
+{
+    Q_ASSERT_X(false, "QScriptDebuggerJob::evaluateFinished()",
+               "implement if hibernateUntilEvaluateFinished() is called");
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerjob_p.h b/src/scripttools/debugging/qscriptdebuggerjob_p.h
new file mode 100644
index 0000000..d65a6ee
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerjob_p.h
@@ -0,0 +1,89 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERJOB_P_H
+#define QSCRIPTDEBUGGERJOB_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+#include <QtCore/qscopedpointer.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerJobSchedulerInterface;
+class QScriptDebuggerValue;
+
+class QScriptDebuggerJobPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerJob
+{
+public:
+    QScriptDebuggerJob();
+    virtual ~QScriptDebuggerJob();
+
+    virtual void start() = 0;
+
+    void finish();
+
+    void hibernateUntilEvaluateFinished();
+    virtual void evaluateFinished(const QScriptDebuggerValue &result);
+
+protected:
+    QScriptDebuggerJob(QScriptDebuggerJobPrivate &dd);
+    QScopedPointer<QScriptDebuggerJobPrivate> d_ptr;
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerJob)
+    Q_DISABLE_COPY(QScriptDebuggerJob)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerjob_p_p.h b/src/scripttools/debugging/qscriptdebuggerjob_p_p.h
new file mode 100644
index 0000000..864776c
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerjob_p_p.h
@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERJOB_P_P_H
+#define QSCRIPTDEBUGGERJOB_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerJobSchedulerInterface;
+
+class QScriptDebuggerJob;
+class QScriptDebuggerJobPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerJob)
+public:
+    QScriptDebuggerJobPrivate();
+    virtual ~QScriptDebuggerJobPrivate();
+
+    static QScriptDebuggerJobPrivate *get(QScriptDebuggerJob *q);
+
+    QScriptDebuggerJobSchedulerInterface *jobScheduler;
+    QScriptDebuggerJob *q_ptr;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerjobschedulerinterface_p.h b/src/scripttools/debugging/qscriptdebuggerjobschedulerinterface_p.h
new file mode 100644
index 0000000..6004697
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerjobschedulerinterface_p.h
@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERJOBSCHEDULERINTERFACE_P_H
+#define QSCRIPTDEBUGGERJOBSCHEDULERINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerJob;
+
+class Q_AUTOTEST_EXPORT QScriptDebuggerJobSchedulerInterface
+{
+public:
+    virtual ~QScriptDebuggerJobSchedulerInterface() {}
+
+    virtual int scheduleJob(QScriptDebuggerJob *job) = 0;
+    virtual void finishJob(QScriptDebuggerJob *job) = 0;
+    virtual void hibernateUntilEvaluateFinished(QScriptDebuggerJob *job) = 0;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerlocalsmodel.cpp b/src/scripttools/debugging/qscriptdebuggerlocalsmodel.cpp
new file mode 100644
index 0000000..efecd73
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerlocalsmodel.cpp
@@ -0,0 +1,959 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerlocalsmodel_p.h"
+#include "qscriptdebuggercommandschedulerjob_p.h"
+#include "qscriptdebuggervalue_p.h"
+#include "qscriptdebuggerresponse_p.h"
+#include "qscriptdebuggerevent_p.h"
+#include "qscriptdebuggervalueproperty_p.h"
+#include "qscriptdebuggercommandschedulerinterface_p.h"
+#include "qscriptdebuggercommandschedulerfrontend_p.h"
+#include "qscriptdebuggerjobschedulerinterface_p.h"
+#include "qscriptdebuggerobjectsnapshotdelta_p.h"
+
+#include "private/qabstractitemmodel_p.h"
+
+#include <QtCore/qdebug.h>
+#include <QtCore/qcoreapplication.h>
+#include <QtCore/qpointer.h>
+#include <QtGui/qbrush.h>
+#include <QtGui/qfont.h>
+
+Q_DECLARE_METATYPE(QScriptDebuggerObjectSnapshotDelta)
+
+QT_BEGIN_NAMESPACE
+
+struct QScriptDebuggerLocalsModelNode
+{
+    enum PopulationState {
+        NotPopulated,
+        Populating,
+        Populated
+    };
+
+    QScriptDebuggerLocalsModelNode()
+        : parent(0), populationState(NotPopulated), snapshotId(-1), changed(false) {}
+
+    QScriptDebuggerLocalsModelNode(
+        const QScriptDebuggerValueProperty &prop,
+        QScriptDebuggerLocalsModelNode *par)
+        : property(prop), parent(par),
+          populationState(NotPopulated), snapshotId(-1), changed(false)
+    {
+        parent->children.append(this);
+    }
+
+    ~QScriptDebuggerLocalsModelNode() { qDeleteAll(children); }
+
+    QScriptDebuggerLocalsModelNode *findChild(const QString &name)
+    {
+        for (int i = 0; i < children.size(); ++i) {
+            QScriptDebuggerLocalsModelNode *child = children.at(i);
+            if (child->property.name() == name)
+                return child;
+        }
+        return 0;
+    }
+
+    QScriptDebuggerValueProperty property;
+    QScriptDebuggerLocalsModelNode *parent;
+    QList<QScriptDebuggerLocalsModelNode*> children;
+    PopulationState populationState;
+    int snapshotId;
+    bool changed;
+};
+
+class QScriptDebuggerLocalsModelPrivate
+    : public QAbstractItemModelPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerLocalsModel)
+public:
+    QScriptDebuggerLocalsModelPrivate();
+    ~QScriptDebuggerLocalsModelPrivate();
+
+    static QScriptDebuggerLocalsModelPrivate *get(QScriptDebuggerLocalsModel *q);
+
+    QModelIndex addTopLevelObject(const QString &name, const QScriptDebuggerValue &object);
+
+    QScriptDebuggerLocalsModelNode *nodeFromIndex(const QModelIndex &index) const;
+    QModelIndex indexFromNode(QScriptDebuggerLocalsModelNode *node) const;
+    bool isTopLevelNode(QScriptDebuggerLocalsModelNode *node) const;
+
+    void populateIndex(const QModelIndex &index);
+    void reallyPopulateIndex(const QModelIndex &index,
+                             const QScriptDebuggerValuePropertyList &props);
+    void syncIndex(const QModelIndex &index);
+    void reallySyncIndex(const QModelIndex &index,
+                         const QScriptDebuggerObjectSnapshotDelta &delta);
+    void syncTopLevelNodes();
+    void removeTopLevelNodes();
+    void emitScopeObjectAvailable(const QModelIndex &index);
+
+    void emitDataChanged(const QModelIndex &tl, const QModelIndex &br);
+    void removeChild(const QModelIndex &parentIndex,
+                     QScriptDebuggerLocalsModelNode *parentNode, int row);
+    void depopulate(QScriptDebuggerLocalsModelNode *node);
+    void repopulate(QScriptDebuggerLocalsModelNode *node);
+    void addChildren(const QModelIndex &parentIndex,
+                     QScriptDebuggerLocalsModelNode *parentNode,
+                     const QScriptDebuggerValuePropertyList &props);
+
+    void deleteObjectSnapshots(const QList<qint64> &snapshotIds);
+    void deleteAllObjectSnapshots();
+
+    QScriptDebuggerJobSchedulerInterface *jobScheduler;
+    QScriptDebuggerCommandSchedulerInterface *commandScheduler;
+    QScriptDebuggerLocalsModelNode *invisibleRootNode;
+    int frameIndex;
+};
+
+QScriptDebuggerLocalsModelPrivate::QScriptDebuggerLocalsModelPrivate()
+{
+    invisibleRootNode = new QScriptDebuggerLocalsModelNode();
+    frameIndex = -1;
+}
+
+QScriptDebuggerLocalsModelPrivate::~QScriptDebuggerLocalsModelPrivate()
+{
+    delete invisibleRootNode;
+}
+
+void QScriptDebuggerLocalsModelPrivate::emitDataChanged(const QModelIndex &tl, const QModelIndex &br)
+{
+    q_func()->dataChanged(tl, br);
+}
+
+static QList<qint64> findSnapshotIdsRecursively(QScriptDebuggerLocalsModelNode *root)
+{
+    QList<qint64> result;
+    if (root->snapshotId == -1) {
+        Q_ASSERT(root->children.isEmpty());
+        return result;
+    }
+    QList<QScriptDebuggerLocalsModelNode*> nodeStack;
+    nodeStack.append(root);
+    while (!nodeStack.isEmpty()) {
+        QScriptDebuggerLocalsModelNode *node = nodeStack.takeFirst();
+        result.append(node->snapshotId);
+        for (int i = 0; i < node->children.count(); ++i) {
+            QScriptDebuggerLocalsModelNode *child = node->children.at(i);
+            if (child->snapshotId != -1)
+                nodeStack.prepend(child);
+        }
+    }
+    return result;
+}
+
+void QScriptDebuggerLocalsModelPrivate::removeChild(const QModelIndex &parentIndex,
+                                                    QScriptDebuggerLocalsModelNode *parentNode,
+                                                    int row)
+{
+    Q_Q(QScriptDebuggerLocalsModel);
+    q->beginRemoveRows(parentIndex, row, row);
+    QScriptDebuggerLocalsModelNode *child = parentNode->children.takeAt(row);
+    QList<qint64> snapshotIds = findSnapshotIdsRecursively(child);
+    delete child;
+    q->endRemoveRows();
+    deleteObjectSnapshots(snapshotIds);
+}
+
+void QScriptDebuggerLocalsModelPrivate::depopulate(QScriptDebuggerLocalsModelNode *node)
+{
+    Q_Q(QScriptDebuggerLocalsModel);
+    bool hasChildren = !node->children.isEmpty();
+    if (hasChildren)
+        q->beginRemoveRows(indexFromNode(node), 0, node->children.count() - 1);
+    QList<qint64> snapshotIds = findSnapshotIdsRecursively(node);
+    qDeleteAll(node->children);
+    node->children.clear();
+    node->snapshotId = -1;
+    node->populationState = QScriptDebuggerLocalsModelNode::NotPopulated;
+    if (hasChildren)
+        q->endRemoveRows();
+    deleteObjectSnapshots(snapshotIds);
+}
+
+void QScriptDebuggerLocalsModelPrivate::repopulate(QScriptDebuggerLocalsModelNode *node)
+{
+    if (node->populationState != QScriptDebuggerLocalsModelNode::Populated)
+        return;
+    depopulate(node);
+    if (node->property.value().type() == QScriptDebuggerValue::ObjectValue)
+        populateIndex(indexFromNode(node));
+}
+
+void QScriptDebuggerLocalsModelPrivate::addChildren(const QModelIndex &parentIndex,
+                                                    QScriptDebuggerLocalsModelNode *parentNode,
+                                                    const QScriptDebuggerValuePropertyList &props)
+{
+    Q_Q(QScriptDebuggerLocalsModel);
+    if (props.isEmpty())
+        return;
+    int first = parentNode->children.size();
+    int last = first + props.size() - 1;
+    q->beginInsertRows(parentIndex, first, last);
+    for (int i = 0; i < props.size(); ++i)
+        new QScriptDebuggerLocalsModelNode(props.at(i), parentNode);
+    q->endInsertRows();
+}
+
+void QScriptDebuggerLocalsModelPrivate::deleteObjectSnapshots(const QList<qint64> &snapshotIds)
+{
+    QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler, 0);
+    for (int i = 0; i < snapshotIds.size(); ++i)
+        frontend.scheduleDeleteScriptObjectSnapshot(snapshotIds.at(i));
+}
+
+void QScriptDebuggerLocalsModelPrivate::deleteAllObjectSnapshots()
+{
+    QList<qint64> snapshotIds;
+    for (int i = 0; i < invisibleRootNode->children.count(); ++i)
+        snapshotIds += findSnapshotIdsRecursively(invisibleRootNode->children.at(i));
+    deleteObjectSnapshots(snapshotIds);
+}
+
+QScriptDebuggerLocalsModelPrivate *QScriptDebuggerLocalsModelPrivate::get(QScriptDebuggerLocalsModel *q)
+{
+    return q->d_func();
+}
+
+namespace {
+
+class SetPropertyJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    SetPropertyJob(const QPersistentModelIndex &index,
+                   const QString &expression,
+                   QScriptDebuggerCommandSchedulerInterface *scheduler)
+        : QScriptDebuggerCommandSchedulerJob(scheduler),
+          m_index(index), m_expression(expression), m_state(0) {}
+
+    QScriptDebuggerLocalsModelPrivate *model() const
+    {
+        if (!m_index.isValid())
+            return 0;
+        QAbstractItemModel *m = const_cast<QAbstractItemModel*>(m_index.model());
+        QScriptDebuggerLocalsModel *lm = qobject_cast<QScriptDebuggerLocalsModel*>(m);
+        return QScriptDebuggerLocalsModelPrivate::get(lm);
+    }
+
+    void start()
+    {
+        if (!m_index.isValid()) {
+            // nothing to do, the node has been removed
+            return;
+        }
+        QScriptDebuggerLocalsModelNode *node = model()->nodeFromIndex(m_index);
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleEvaluate(model()->frameIndex, m_expression,
+                                  QString::fromLatin1("set property '%0' (%1)")
+                                  .arg(node->property.name())
+                                  .arg(QDateTime::currentDateTime().toString()));
+    }
+
+    void handleResponse(const QScriptDebuggerResponse &, int)
+    {
+        switch (m_state) {
+        case 0:
+            hibernateUntilEvaluateFinished();
+            ++m_state;
+            break;
+        case 1:
+            finish();
+            break;
+        }
+    }
+
+    void evaluateFinished(const QScriptDebuggerValue &result)
+    {
+        if (!m_index.isValid()) {
+            // nothing to do, the node has been removed
+            return;
+        }
+        QScriptDebuggerLocalsModelNode *node = model()->nodeFromIndex(m_index);
+        Q_ASSERT(node->parent != 0);
+        QScriptDebuggerValue object = node->parent->property.value();
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleSetScriptValueProperty(object, node->property.name(), result);
+    }
+    
+private:
+    QPersistentModelIndex m_index;
+    QString m_expression;
+    int m_state;
+};
+
+} // namespace
+
+QScriptDebuggerLocalsModelNode *QScriptDebuggerLocalsModelPrivate::nodeFromIndex(
+    const QModelIndex &index) const
+{
+    if (!index.isValid())
+        return invisibleRootNode;
+    return static_cast<QScriptDebuggerLocalsModelNode*>(index.internalPointer());
+}
+
+QModelIndex QScriptDebuggerLocalsModelPrivate::indexFromNode(
+    QScriptDebuggerLocalsModelNode *node) const
+{
+    if (!node || (node == invisibleRootNode))
+        return QModelIndex();
+    QScriptDebuggerLocalsModelNode *par = node->parent;
+    int row = par ? par->children.indexOf(node) : 0;
+    return createIndex(row, 0, node);
+}
+
+bool QScriptDebuggerLocalsModelPrivate::isTopLevelNode(QScriptDebuggerLocalsModelNode *node) const
+{
+    return node && (node->parent == invisibleRootNode);
+}
+
+namespace {
+
+class PopulateModelIndexJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    PopulateModelIndexJob(const QPersistentModelIndex &index,
+                          QScriptDebuggerCommandSchedulerInterface *scheduler)
+        : QScriptDebuggerCommandSchedulerJob(scheduler),
+          m_index(index), m_state(0)
+    { }
+
+    QScriptDebuggerLocalsModelPrivate *model() const
+    {
+        if (!m_index.isValid())
+            return 0;
+        QAbstractItemModel *m = const_cast<QAbstractItemModel*>(m_index.model());
+        QScriptDebuggerLocalsModel *lm = qobject_cast<QScriptDebuggerLocalsModel*>(m);
+        return QScriptDebuggerLocalsModelPrivate::get(lm);
+    }
+
+    void start()
+    {
+        if (!m_index.isValid()) {
+            // nothing to do, the node has been removed
+            finish();
+            return;
+        }
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleNewScriptObjectSnapshot();
+    }
+
+    void handleResponse(const QScriptDebuggerResponse &response,
+                        int)
+    {
+        if (!m_index.isValid()) {
+            // the node has been removed
+            finish();
+            return;
+        }
+        switch (m_state) {
+        case 0: {
+            QScriptDebuggerLocalsModelNode *node = model()->nodeFromIndex(m_index);
+            Q_ASSERT(node->populationState == QScriptDebuggerLocalsModelNode::Populating);
+            node->snapshotId = response.resultAsInt();
+            QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+            frontend.scheduleScriptObjectSnapshotCapture(node->snapshotId, node->property.value());
+            ++m_state;
+        }   break;
+        case 1: {
+            QScriptDebuggerObjectSnapshotDelta delta;
+            delta = qvariant_cast<QScriptDebuggerObjectSnapshotDelta>(response.result());
+            Q_ASSERT(delta.removedProperties.isEmpty());
+            Q_ASSERT(delta.changedProperties.isEmpty());
+            QScriptDebuggerValuePropertyList props = delta.addedProperties;
+            model()->reallyPopulateIndex(m_index, props);
+            finish();
+          } break;
+        }
+    }
+
+private:
+    QPersistentModelIndex m_index;
+    int m_state;
+};
+
+} // namespace
+
+void QScriptDebuggerLocalsModelPrivate::populateIndex(
+    const QModelIndex &index)
+{
+    if (!index.isValid())
+        return;
+    QScriptDebuggerLocalsModelNode *node = nodeFromIndex(index);
+    if (node->populationState != QScriptDebuggerLocalsModelNode::NotPopulated)
+        return;
+    if (node->property.value().type() != QScriptDebuggerValue::ObjectValue)
+        return;
+    node->populationState = QScriptDebuggerLocalsModelNode::Populating;
+    QScriptDebuggerJob *job = new PopulateModelIndexJob(index, commandScheduler);
+    jobScheduler->scheduleJob(job);
+}
+
+void QScriptDebuggerLocalsModelPrivate::reallyPopulateIndex(
+    const QModelIndex &index,
+    const QScriptDebuggerValuePropertyList &props)
+{
+    if (!index.isValid())
+        return;
+    QScriptDebuggerLocalsModelNode *node = nodeFromIndex(index);
+    Q_ASSERT(node->populationState == QScriptDebuggerLocalsModelNode::Populating);
+    node->populationState = QScriptDebuggerLocalsModelNode::Populated;
+    addChildren(index, node, props);
+}
+
+QScriptDebuggerLocalsModel::QScriptDebuggerLocalsModel(
+    QScriptDebuggerJobSchedulerInterface *jobScheduler,
+    QScriptDebuggerCommandSchedulerInterface *commandScheduler,
+    QObject *parent)
+    : QAbstractItemModel(*new QScriptDebuggerLocalsModelPrivate, parent)
+{
+    Q_D(QScriptDebuggerLocalsModel);
+    d->jobScheduler = jobScheduler;
+    d->commandScheduler = commandScheduler;
+}
+
+QScriptDebuggerLocalsModel::~QScriptDebuggerLocalsModel()
+{
+}
+
+QModelIndex QScriptDebuggerLocalsModelPrivate::addTopLevelObject(const QString &name, const QScriptDebuggerValue &object)
+{
+    Q_Q(QScriptDebuggerLocalsModel);
+    QScriptDebuggerLocalsModelNode *node = invisibleRootNode->findChild(name);
+    if (node)
+        return indexFromNode(node);
+    QScriptDebuggerValueProperty prop(name, object,
+                                      QString::fromLatin1(""), // ### string representation of object
+                                      /*flags=*/0);
+    int rowIndex = invisibleRootNode->children.size();
+    q->beginInsertRows(QModelIndex(), rowIndex, rowIndex);
+    node = new QScriptDebuggerLocalsModelNode(prop, invisibleRootNode);
+    q->endInsertRows();
+    return indexFromNode(node);
+}
+
+namespace {
+
+class InitModelJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    InitModelJob(QScriptDebuggerLocalsModel *model,
+                 int frameIndex,
+                 QScriptDebuggerCommandSchedulerInterface *scheduler)
+        : QScriptDebuggerCommandSchedulerJob(scheduler),
+          m_model(model), m_frameIndex(frameIndex), m_state(0)
+    { }
+
+    void start()
+    {
+        if (!m_model) {
+            // Model has been deleted.
+            finish();
+            return;
+        }
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleGetScopeChain(m_frameIndex);
+    }
+
+    void handleResponse(const QScriptDebuggerResponse &response,
+                        int)
+    {
+        if (!m_model) {
+            // Model has been deleted.
+            finish();
+            return;
+        }
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        QScriptDebuggerLocalsModelPrivate *model_d = QScriptDebuggerLocalsModelPrivate::get(m_model);
+        switch (m_state) {
+        case 0: {
+            QScriptDebuggerValueList scopeChain = response.resultAsScriptValueList();
+            for (int i = 0; i < scopeChain.size(); ++i) {
+                const QScriptDebuggerValue &scopeObject = scopeChain.at(i);
+                QString name = QString::fromLatin1("Scope");
+                if (i > 0)
+                    name.append(QString::fromLatin1(" (%0)").arg(i));
+                QModelIndex index = model_d->addTopLevelObject(name, scopeObject);
+                if (i == 0)
+                    model_d->emitScopeObjectAvailable(index);
+            }
+            frontend.scheduleGetThisObject(m_frameIndex);
+            ++m_state;
+        }   break;
+        case 1: {
+            QScriptDebuggerValue thisObject = response.resultAsScriptValue();
+            model_d->addTopLevelObject(QLatin1String("this"), thisObject);
+            finish();
+          } break;
+        }
+    }
+
+private:
+    QPointer<QScriptDebuggerLocalsModel> m_model;
+    int m_frameIndex;
+    int m_state;
+};
+
+} // namespace
+
+void QScriptDebuggerLocalsModel::init(int frameIndex)
+{
+    Q_D(QScriptDebuggerLocalsModel);
+    d->frameIndex = frameIndex;
+    QScriptDebuggerJob *job = new InitModelJob(this, frameIndex, d->commandScheduler);
+    d->jobScheduler->scheduleJob(job);
+}
+
+namespace {
+
+class SyncModelJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    SyncModelJob(QScriptDebuggerLocalsModel *model,
+                 int frameIndex,
+                 QScriptDebuggerCommandSchedulerInterface *scheduler)
+        : QScriptDebuggerCommandSchedulerJob(scheduler),
+          m_model(model), m_frameIndex(frameIndex), m_state(0)
+    { }
+
+    void start()
+    {
+        if (!m_model) {
+            // Model has been deleted.
+            finish();
+            return;
+        }
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        frontend.scheduleGetScopeChain(m_frameIndex);
+    }
+
+    void handleResponse(const QScriptDebuggerResponse &response,
+                        int)
+    {
+        if (!m_model) {
+            // Model has been deleted.
+            finish();
+            return;
+        }
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        switch (m_state) {
+        case 0: {
+            QScriptDebuggerValueList scopeChain = response.resultAsScriptValueList();
+            m_topLevelObjects << scopeChain;
+            frontend.scheduleGetThisObject(m_frameIndex);
+            ++m_state;
+        }   break;
+        case 1: {
+            QScriptDebuggerLocalsModelPrivate *model_d = QScriptDebuggerLocalsModelPrivate::get(m_model);
+            QScriptDebuggerValue thisObject = response.resultAsScriptValue();
+            m_topLevelObjects.append(thisObject);
+            bool equal = (m_topLevelObjects.size() == model_d->invisibleRootNode->children.size());
+            for (int i = 0; equal && (i < m_topLevelObjects.size()); ++i) {
+                const QScriptDebuggerValue &object = m_topLevelObjects.at(i);
+                equal = (object == model_d->invisibleRootNode->children.at(i)->property.value());
+            }
+            if (!equal) {
+                // the scope chain and/or this-object changed, so invalidate the model.
+                // we could try to be more clever, i.e. figure out
+                // exactly which objects were popped/pushed
+                model_d->removeTopLevelNodes();
+                for (int j = 0; j < m_topLevelObjects.size(); ++j) {
+                    const QScriptDebuggerValue &object = m_topLevelObjects.at(j);
+                    QString name;
+                    if (j == m_topLevelObjects.size()-1) {
+                        name = QString::fromLatin1("this");
+                    } else {
+                        name = QString::fromLatin1("Scope");
+                        if (j > 0)
+                            name.append(QString::fromLatin1(" (%0)").arg(j));
+                    }
+                    QModelIndex index = model_d->addTopLevelObject(name, object);
+                    if (j == 0)
+                        model_d->emitScopeObjectAvailable(index);
+                }
+            } else {
+                model_d->syncTopLevelNodes();
+            }
+            finish();
+          } break;
+        }
+    }
+
+private:
+    QPointer<QScriptDebuggerLocalsModel> m_model;
+    int m_frameIndex;
+    int m_state;
+    QScriptDebuggerValueList m_topLevelObjects;
+};
+
+} // namespace
+
+void QScriptDebuggerLocalsModel::sync(int frameIndex)
+{
+    Q_D(QScriptDebuggerLocalsModel);
+    d->frameIndex = frameIndex;
+    QScriptDebuggerJob *job = new SyncModelJob(this, frameIndex, d->commandScheduler);
+    d->jobScheduler->scheduleJob(job);
+}
+
+namespace {
+
+class SyncModelIndexJob : public QScriptDebuggerCommandSchedulerJob
+{
+public:
+    SyncModelIndexJob(const QPersistentModelIndex &index,
+                      QScriptDebuggerCommandSchedulerInterface *scheduler)
+        : QScriptDebuggerCommandSchedulerJob(scheduler),
+          m_index(index)
+    { }
+
+    QScriptDebuggerLocalsModelPrivate *model() const
+    {
+        if (!m_index.isValid())
+            return 0;
+        QAbstractItemModel *m = const_cast<QAbstractItemModel*>(m_index.model());
+        QScriptDebuggerLocalsModel *lm = qobject_cast<QScriptDebuggerLocalsModel*>(m);
+        return QScriptDebuggerLocalsModelPrivate::get(lm);
+    }
+
+    void start()
+    {
+        if (!m_index.isValid()) {
+            // nothing to do, the node has been removed
+            finish();
+            return;
+        }
+        QScriptDebuggerCommandSchedulerFrontend frontend(commandScheduler(), this);
+        QScriptDebuggerLocalsModelNode *node = model()->nodeFromIndex(m_index);
+        frontend.scheduleScriptObjectSnapshotCapture(node->snapshotId, node->property.value());
+    }
+
+    void handleResponse(const QScriptDebuggerResponse &response,
+                        int)
+    {
+        QScriptDebuggerObjectSnapshotDelta delta;
+        delta = qvariant_cast<QScriptDebuggerObjectSnapshotDelta>(response.result());
+        model()->reallySyncIndex(m_index, delta);
+        finish();
+    }
+
+private:
+    QPersistentModelIndex m_index;
+};
+
+} // namespace
+
+void QScriptDebuggerLocalsModelPrivate::syncIndex(const QModelIndex &index)
+{
+    if (!index.isValid())
+        return;
+    QScriptDebuggerLocalsModelNode *node = nodeFromIndex(index);
+    if (node->populationState != QScriptDebuggerLocalsModelNode::Populated)
+        return;
+    QScriptDebuggerJob *job = new SyncModelIndexJob(index, commandScheduler);
+    jobScheduler->scheduleJob(job);
+}
+
+void QScriptDebuggerLocalsModelPrivate::reallySyncIndex(const QModelIndex &index,
+                                                        const QScriptDebuggerObjectSnapshotDelta &delta)
+{
+    if (!index.isValid())
+        return;
+    QScriptDebuggerLocalsModelNode *node = nodeFromIndex(index);
+    // update or remove existing children
+    for (int i = 0; i < node->children.count(); ++i) {
+        QScriptDebuggerLocalsModelNode *child = node->children.at(i);
+        int j;
+        for (j = 0; j < delta.changedProperties.count(); ++j) {
+            if (child->property.name() == delta.changedProperties.at(j).name()) {
+                child->property = delta.changedProperties.at(j);
+                child->changed = true;
+                emitDataChanged(index, index.sibling(0, 1));
+                repopulate(child);
+                break;
+            }
+        }
+        if (j != delta.changedProperties.count())
+            continue; // was changed
+        for (j = 0; j < delta.removedProperties.count(); ++j) {
+            if (child->property.name() == delta.removedProperties.at(j)) {
+                removeChild(index, node, i);
+                --i;
+                break;
+            }
+        }
+        if (j != delta.removedProperties.count())
+            continue; // was removed
+        // neither changed nor removed, but its children might be
+        if (child->populationState == QScriptDebuggerLocalsModelNode::Populated) {
+            QScriptDebuggerJob *job = new SyncModelIndexJob(indexFromNode(child), commandScheduler);
+            jobScheduler->scheduleJob(job);
+        }
+    }
+    addChildren(index, node, delta.addedProperties);
+}
+
+void QScriptDebuggerLocalsModelPrivate::syncTopLevelNodes()
+{
+    Q_Q(QScriptDebuggerLocalsModel);
+    for (int i = 0; i < invisibleRootNode->children.count(); ++i) {
+        QModelIndex index = q->index(i, 0, QModelIndex());
+        syncIndex(index);
+        if (i == 0)
+            emit q->scopeObjectAvailable(index);
+    }
+}
+
+void QScriptDebuggerLocalsModelPrivate::removeTopLevelNodes()
+{
+    while (!invisibleRootNode->children.isEmpty())
+        removeChild(QModelIndex(), invisibleRootNode, 0);
+}
+
+void QScriptDebuggerLocalsModelPrivate::emitScopeObjectAvailable(const QModelIndex &index)
+{
+    emit q_func()->scopeObjectAvailable(index);
+}
+
+int QScriptDebuggerLocalsModel::frameIndex() const
+{
+    Q_D(const QScriptDebuggerLocalsModel);
+    return d->frameIndex;
+}
+
+/*!
+  \reimp
+*/
+QModelIndex QScriptDebuggerLocalsModel::index(int row, int column, const QModelIndex &parent) const
+{
+    Q_D(const QScriptDebuggerLocalsModel);
+    QScriptDebuggerLocalsModelNode *node = d->nodeFromIndex(parent);
+    if ((row < 0) || (row >= node->children.count()))
+        return QModelIndex();
+    return createIndex(row, column, node->children.at(row));
+}
+
+/*!
+  \reimp
+*/
+QModelIndex QScriptDebuggerLocalsModel::parent(const QModelIndex &index) const
+{
+    Q_D(const QScriptDebuggerLocalsModel);
+    if (!index.isValid())
+        return QModelIndex();
+    QScriptDebuggerLocalsModelNode *node = d->nodeFromIndex(index);
+    return d->indexFromNode(node->parent);
+}
+
+/*!
+  \reimp
+*/
+int QScriptDebuggerLocalsModel::columnCount(const QModelIndex &) const
+{
+    return 2;
+}
+
+/*!
+  \reimp
+*/
+int QScriptDebuggerLocalsModel::rowCount(const QModelIndex &parent) const
+{
+    Q_D(const QScriptDebuggerLocalsModel);
+    // ### need this to make it work with a sortfilterproxymodel (QSFPM is too eager)
+    const_cast<QScriptDebuggerLocalsModel*>(this)->fetchMore(parent);
+    QScriptDebuggerLocalsModelNode *node = d->nodeFromIndex(parent);
+    return node ? node->children.count() : 0;
+}
+
+/*!
+  \reimp
+*/
+QVariant QScriptDebuggerLocalsModel::data(const QModelIndex &index, int role) const
+{
+    Q_D(const QScriptDebuggerLocalsModel);
+    if (!index.isValid())
+        return QVariant();
+    QScriptDebuggerLocalsModelNode *node = d->nodeFromIndex(index);
+    if (role == Qt::DisplayRole) {
+        if (index.column() == 0)
+            return node->property.name();
+        else if (index.column() == 1) {
+            QString str = node->property.valueAsString();
+            if (str.indexOf(QLatin1Char('\n')) != -1) {
+                QStringList lines = str.split(QLatin1Char('\n'));
+                int lineCount = lines.size();
+                if (lineCount > 1) {
+                    lines = lines.mid(0, 1);
+                    lines.append(QString::fromLatin1("(... %0 more lines ...)").arg(lineCount - 1));
+                }
+                str = lines.join(QLatin1String("\n"));
+            }
+            return str;
+        }
+    } else if (role == Qt::EditRole) {
+        if ((index.column() == 1) && !d->isTopLevelNode(node)) {
+            QString str = node->property.valueAsString();
+            if (node->property.value().type() == QScriptDebuggerValue::StringValue) {
+                // escape
+                str.replace(QLatin1Char('\"'), QLatin1String("\\\""));
+                str.prepend(QLatin1Char('\"'));
+                str.append(QLatin1Char('\"'));
+            }
+            return str;
+        }
+    } else if (role == Qt::ToolTipRole) {
+        if (index.column() == 1) {
+            QString str = node->property.valueAsString();
+            if (str.indexOf(QLatin1Char('\n')) != -1)
+                return str;
+        }
+    }
+    // ### do this in the delegate
+    else if (role == Qt::BackgroundRole) {
+        if (d->isTopLevelNode(node))
+            return QBrush(Qt::darkGray);
+    } else if (role == Qt::TextColorRole) {
+        if (d->isTopLevelNode(node))
+            return QColor(Qt::white);
+    } else if (role == Qt::FontRole) {
+        if (d->isTopLevelNode(node) || node->changed) {
+            QFont fnt;
+            fnt.setBold(true);
+            return fnt;
+        }
+    }
+    return QVariant();
+}
+
+/*!
+  \reimp
+*/
+bool QScriptDebuggerLocalsModel::setData(const QModelIndex &index, const QVariant &value, int role)
+{
+    Q_D(QScriptDebuggerLocalsModel);
+    if (!index.isValid())
+        return false;
+    if (role != Qt::EditRole)
+        return false;
+    QScriptDebuggerLocalsModelNode *node = d->nodeFromIndex(index);
+    if (!node)
+        return false;
+    QString expr = value.toString().trimmed();
+    if (expr.isEmpty())
+        return false;
+    QScriptDebuggerJob *job = new SetPropertyJob(index, expr, d->commandScheduler);
+    d->jobScheduler->scheduleJob(job);
+    return true;
+}
+
+/*!
+  \reimp
+*/
+QVariant QScriptDebuggerLocalsModel::headerData(int section, Qt::Orientation orient, int role) const
+{
+    if (orient == Qt::Horizontal) {
+        if (role == Qt::DisplayRole) {
+            if (section == 0)
+                return QCoreApplication::translate("QScriptDebuggerLocalsModel", "Name");
+            else if (section == 1)
+                return QCoreApplication::translate("QScriptDebuggerLocalsModel", "Value");
+        }
+    }
+    return QVariant();
+}
+
+/*!
+  \reimp
+*/
+Qt::ItemFlags QScriptDebuggerLocalsModel::flags(const QModelIndex &index) const
+{
+    Q_D(const QScriptDebuggerLocalsModel);
+    if (!index.isValid())
+        return 0;
+    Qt::ItemFlags ret = Qt::ItemIsEnabled | Qt::ItemIsSelectable;
+    if ((index.column() == 1) && index.parent().isValid()) {
+        QScriptDebuggerLocalsModelNode *node = d->nodeFromIndex(index);
+        if (!(node->property.flags() & QScriptValue::ReadOnly))
+            ret |= Qt::ItemIsEditable;
+    }
+    return ret;
+}
+
+/*!
+  \reimp
+*/
+bool QScriptDebuggerLocalsModel::hasChildren(const QModelIndex &parent) const
+{
+    Q_D(const QScriptDebuggerLocalsModel);
+    QScriptDebuggerLocalsModelNode *node = d->nodeFromIndex(parent);
+    if (!node)
+        return false;
+    return !node->children.isEmpty()
+        || ((node->property.value().type() == QScriptDebuggerValue::ObjectValue)
+            && (node->populationState == QScriptDebuggerLocalsModelNode::NotPopulated));
+}
+
+/*!
+  \reimp
+*/
+bool QScriptDebuggerLocalsModel::canFetchMore(const QModelIndex &parent) const
+{
+    Q_D(const QScriptDebuggerLocalsModel);
+    if (!parent.isValid())
+        return false;
+    QScriptDebuggerLocalsModelNode *node = d->nodeFromIndex(parent);
+    return node
+        && (node->property.value().type() == QScriptDebuggerValue::ObjectValue)
+        && (node->populationState == QScriptDebuggerLocalsModelNode::NotPopulated);
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerLocalsModel::fetchMore(const QModelIndex &parent)
+{
+    Q_D(QScriptDebuggerLocalsModel);
+    d->populateIndex(parent);
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerlocalsmodel_p.h b/src/scripttools/debugging/qscriptdebuggerlocalsmodel_p.h
new file mode 100644
index 0000000..e2d0850
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerlocalsmodel_p.h
@@ -0,0 +1,102 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERLOCALSMODEL_P_H
+#define QSCRIPTDEBUGGERLOCALSMODEL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qabstractitemmodel.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerValue;
+class QScriptDebuggerJobSchedulerInterface;
+class QScriptDebuggerCommandSchedulerInterface;
+
+class QScriptDebuggerLocalsModelPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerLocalsModel
+    : public QAbstractItemModel
+{
+    Q_OBJECT
+public:
+    QScriptDebuggerLocalsModel(QScriptDebuggerJobSchedulerInterface *jobScheduler,
+                               QScriptDebuggerCommandSchedulerInterface *commandScheduler,
+                               QObject *parent = 0);
+    ~QScriptDebuggerLocalsModel();
+
+    void init(int frameIndex);
+    void sync(int frameIndex);
+
+    int frameIndex() const;
+
+    QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const;
+    QModelIndex parent(const QModelIndex &child) const;
+    int columnCount(const QModelIndex &parent) const;
+    int rowCount(const QModelIndex &parent) const;
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
+    bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);
+    QVariant headerData(int section, Qt::Orientation, int role = Qt::DisplayRole) const;
+    Qt::ItemFlags flags(const QModelIndex &index) const;
+    bool hasChildren(const QModelIndex &parent) const;
+    bool canFetchMore(const QModelIndex &parent) const;
+    void fetchMore(const QModelIndex &parent);
+
+Q_SIGNALS:
+    void scopeObjectAvailable(const QModelIndex &index);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerLocalsModel)
+    Q_DISABLE_COPY(QScriptDebuggerLocalsModel)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerlocalswidget.cpp b/src/scripttools/debugging/qscriptdebuggerlocalswidget.cpp
new file mode 100644
index 0000000..9449e2d
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerlocalswidget.cpp
@@ -0,0 +1,424 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerlocalswidget_p.h"
+#include "qscriptdebuggerlocalswidgetinterface_p_p.h"
+#include "qscriptdebuggerlocalsmodel_p.h"
+#include "qscriptcompletionproviderinterface_p.h"
+#include "qscriptcompletiontaskinterface_p.h"
+
+#include <QtCore/qdebug.h>
+#include <QtGui/qheaderview.h>
+#include <QtGui/qcompleter.h>
+#include <QtGui/qstringlistmodel.h>
+#include <QtGui/qtreeview.h>
+#include <QtGui/qboxlayout.h>
+#include <QtGui/qsortfilterproxymodel.h>
+#include <QtGui/qlineedit.h>
+#include <QtGui/qstyleditemdelegate.h>
+#include <QtGui/qevent.h>
+#include <QtGui/qmessagebox.h>
+#include <QtScript/qscriptengine.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace {
+
+class CustomProxyModel : public QSortFilterProxyModel
+{
+public:
+    CustomProxyModel(QObject *parent = 0)
+        : QSortFilterProxyModel(parent) {}
+
+    bool hasChildren(const QModelIndex &parent) const
+    {
+        if (!sourceModel())
+            return false;
+        QModelIndex sourceParent = mapToSource(parent);
+        if (parent.isValid() && !sourceParent.isValid())
+            return false;
+        return sourceModel()->hasChildren(sourceParent);
+    }
+};
+
+} // namespace
+
+class QScriptDebuggerLocalsWidgetPrivate
+    : public QScriptDebuggerLocalsWidgetInterfacePrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerLocalsWidget)
+public:
+    QScriptDebuggerLocalsWidgetPrivate();
+    ~QScriptDebuggerLocalsWidgetPrivate();
+
+    void complete(QLineEdit *le);
+
+    // private slots
+    void _q_onCompletionTaskFinished();
+    void _q_insertCompletion(const QString &text);
+    void _q_expandIndex(const QModelIndex &index);
+
+    QTreeView *view;
+    QPointer<QLineEdit> completingEditor;
+    QCompleter *completer;
+    CustomProxyModel *proxy;
+};
+
+QScriptDebuggerLocalsWidgetPrivate::QScriptDebuggerLocalsWidgetPrivate()
+{
+    completingEditor = 0;
+    completer = 0;
+    proxy = 0;
+}
+
+QScriptDebuggerLocalsWidgetPrivate::~QScriptDebuggerLocalsWidgetPrivate()
+{
+}
+
+void QScriptDebuggerLocalsWidgetPrivate::complete(QLineEdit *le)
+{
+    Q_Q(QScriptDebuggerLocalsWidget);
+    QScriptCompletionTaskInterface *task = 0;
+    // ### need to pass the current frame #
+    task = completionProvider->createCompletionTask(
+        le->text(), le->cursorPosition(),
+        q->localsModel()->frameIndex(), /*options=*/0);
+    QObject::connect(task, SIGNAL(finished()),
+                     q, SLOT(_q_onCompletionTaskFinished()));
+    completingEditor = le;
+    task->start();
+}
+
+void QScriptDebuggerLocalsWidgetPrivate::_q_onCompletionTaskFinished()
+{
+    Q_Q(QScriptDebuggerLocalsWidget);
+    QScriptCompletionTaskInterface *task = 0;
+    task = qobject_cast<QScriptCompletionTaskInterface*>(q_func()->sender());
+    if (!completingEditor) {
+        task->deleteLater();
+        return;
+    }
+
+    if (task->resultCount() == 1) {
+        // do the completion right away
+        QString completion = task->resultAt(0);
+        completion.append(task->appendix());
+        QString tmp = completingEditor->text();
+        tmp.remove(task->position(), task->length());
+        tmp.insert(task->position(), completion);
+        completingEditor->setText(tmp);
+        completingEditor = 0;
+    } else if (task->resultCount() > 1) {
+        // popup completion
+        if (!completer) {
+            completer = new QCompleter(q);
+            completer->setCompletionMode(QCompleter::PopupCompletion);
+            completer->setCaseSensitivity(Qt::CaseSensitive);
+            completer->setWrapAround(false);
+            QObject::connect(completer, SIGNAL(activated(QString)),
+                             q, SLOT(_q_insertCompletion(QString)));
+        }
+        QStringListModel *model = qobject_cast<QStringListModel*>(completer->model());
+        if (!model) {
+            model = new QStringListModel(q);
+            completer->setModel(model);
+        }
+        QStringList strings;
+        for (int i = 0; i < task->resultCount(); ++i)
+            strings.append(task->resultAt(i));
+        model->setStringList(strings);
+        QString prefix = completingEditor->text().mid(task->position(), task->length());
+        completer->setCompletionPrefix(prefix);
+        completingEditor->setCompleter(completer);
+        // we want to handle the insertion ourselves
+        QObject::disconnect(completer, 0, completingEditor, 0);
+        completer->complete();
+    }
+    task->deleteLater();
+}
+
+void QScriptDebuggerLocalsWidgetPrivate::_q_insertCompletion(const QString &text)
+{
+    Q_ASSERT(completingEditor != 0);
+    QString tmp = completingEditor->text();
+    tmp.insert(completingEditor->cursorPosition(), text.mid(completer->completionPrefix().length()));
+    completingEditor->setText(tmp);
+    completingEditor = 0;
+}
+
+void QScriptDebuggerLocalsWidgetPrivate::_q_expandIndex(const QModelIndex &index)
+{
+    if (view->model() == index.model())
+        view->expand(proxy->mapFromSource(index));
+}
+
+class QScriptDebuggerLocalsItemDelegate
+    : public QStyledItemDelegate
+{
+    Q_OBJECT
+public:
+    QScriptDebuggerLocalsItemDelegate(QObject *parent = 0);
+
+    QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const;
+    void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const;
+    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
+
+    bool eventFilter(QObject *watched, QEvent *event);
+
+private Q_SLOTS:
+    void validateInput(const QString &text)
+    {
+        QWidget *editor = qobject_cast<QWidget*>(sender());
+        QPalette pal = editor->palette();
+        QColor col;
+        bool ok = (QScriptEngine::checkSyntax(text).state() == QScriptSyntaxCheckResult::Valid);
+        if (ok) {
+            col = Qt::white;
+        } else {
+            QScriptSyntaxCheckResult result = QScriptEngine::checkSyntax(
+                text + QLatin1Char('\n'));
+            if (result.state() == QScriptSyntaxCheckResult::Intermediate)
+                col = QColor(255, 240, 192);
+            else
+                col = QColor(255, 102, 102);
+        }
+        pal.setColor(QPalette::Active, QPalette::Base, col);
+        editor->setPalette(pal);
+    }
+
+private:
+    static const QWidget *widget(const QStyleOptionViewItem &option)
+    {
+        if (const QStyleOptionViewItemV3 *v3 = qstyleoption_cast<const QStyleOptionViewItemV3 *>(&option))
+            return v3->widget;
+        return 0;
+    }
+};
+
+QScriptDebuggerLocalsItemDelegate::QScriptDebuggerLocalsItemDelegate(
+    QObject *parent)
+    : QStyledItemDelegate(parent)
+{
+}
+
+QWidget *QScriptDebuggerLocalsItemDelegate::createEditor(
+    QWidget *parent, const QStyleOptionViewItem &option,
+    const QModelIndex &index) const
+{
+    QWidget *editor = QStyledItemDelegate::createEditor(parent, option, index);
+    if (index.column() == 1) {
+        // value
+        QLineEdit *le = qobject_cast<QLineEdit*>(editor);
+        if (le) {
+            QObject::connect(le, SIGNAL(textEdited(QString)),
+                             this, SLOT(validateInput(QString)));
+        }
+    }
+    return editor;
+}
+
+bool QScriptDebuggerLocalsItemDelegate::eventFilter(QObject *watched, QEvent *event)
+{
+    QLineEdit *le = qobject_cast<QLineEdit*>(watched);
+    if (!le)
+        return QStyledItemDelegate::eventFilter(watched, event);
+
+    QScriptDebuggerLocalsWidget *localsWidget = qobject_cast<QScriptDebuggerLocalsWidget*>(parent());
+    Q_ASSERT(localsWidget != 0);
+    QScriptDebuggerLocalsWidgetPrivate *lvp =
+        reinterpret_cast<QScriptDebuggerLocalsWidgetPrivate*>(
+            QScriptDebuggerLocalsWidgetPrivate::get(localsWidget));
+
+    if ((event->type() == QEvent::FocusIn) && lvp->completingEditor) {
+        // because QLineEdit insists on being difficult...
+        return true;
+    }
+
+    if (event->type() != QEvent::KeyPress)
+        return QStyledItemDelegate::eventFilter(watched, event);
+    QKeyEvent *ke = static_cast<QKeyEvent*>(event);
+    if ((ke->key() == Qt::Key_Enter) || (ke->key() == Qt::Key_Return)) {
+        if (QScriptEngine::checkSyntax(le->text()).state() != QScriptSyntaxCheckResult::Valid) {
+            // ignore when script contains syntax error
+            return true;
+        }
+    }
+    if (ke->key() != Qt::Key_Tab)
+        return QStyledItemDelegate::eventFilter(watched, event);
+
+    // trigger completion
+    lvp->complete(le);
+    return true;
+}
+
+void QScriptDebuggerLocalsItemDelegate::setModelData(
+    QWidget *editor, QAbstractItemModel *model,
+    const QModelIndex &index) const
+{
+    if (index.column() == 1) {
+        // check that the syntax is OK
+        QString expression = qobject_cast<QLineEdit*>(editor)->text();
+        if (QScriptEngine::checkSyntax(expression).state() != QScriptSyntaxCheckResult::Valid)
+            return;
+    }
+    QStyledItemDelegate::setModelData(editor, model, index);
+}
+
+void QScriptDebuggerLocalsItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
+                                              const QModelIndex &index) const
+{
+    QStyledItemDelegate::paint(painter, option, index);
+#if 0
+    QModelIndex parent = index.parent();
+    if (parent.isValid()) {
+        QStyledItemDelegate::paint(painter, option, index);
+    } else {
+        // this is a top-level item.
+        const QTreeView *view = qobject_cast<const QTreeView*>(widget(option));
+        Q_ASSERT(view != 0);
+
+        QStyleOptionButton buttonOption;
+
+        buttonOption.state = option.state;
+#ifdef Q_WS_MAC
+        buttonOption.state |= QStyle::State_Raised;
+#endif
+        buttonOption.state &= ~QStyle::State_HasFocus;
+
+        buttonOption.rect = option.rect;
+        buttonOption.palette = option.palette;
+        buttonOption.features = QStyleOptionButton::None;
+        view->style()->drawControl(QStyle::CE_PushButton, &buttonOption, painter, view);
+
+        QStyleOption branchOption;
+        static const int i = 9; // ### hardcoded in qcommonstyle.cpp
+        QRect r = option.rect;
+        branchOption.rect = QRect(r.left() + i/2, r.top() + (r.height() - i)/2, i, i);
+        branchOption.palette = option.palette;
+        branchOption.state = QStyle::State_Children;
+
+        if (view->isExpanded(index))
+            branchOption.state |= QStyle::State_Open;
+
+        view->style()->drawPrimitive(QStyle::PE_IndicatorBranch, &branchOption, painter, view);
+
+        // draw text
+        QRect textrect = QRect(r.left() + i*2, r.top(), r.width() - ((5*i)/2), r.height());
+        QString text = elidedText(option.fontMetrics, textrect.width(), Qt::ElideMiddle, 
+            index.data(Qt::DisplayRole).toString());
+        view->style()->drawItemText(painter, textrect, Qt::AlignCenter,
+                                    option.palette, view->isEnabled(), text);
+    }
+#endif
+}
+
+QScriptDebuggerLocalsWidget::QScriptDebuggerLocalsWidget(QWidget *parent)
+    : QScriptDebuggerLocalsWidgetInterface(*new QScriptDebuggerLocalsWidgetPrivate, parent, 0)
+{
+    Q_D(QScriptDebuggerLocalsWidget);
+    d->view = new QTreeView();
+    d->view->setItemDelegate(new QScriptDebuggerLocalsItemDelegate(this));
+    d->view->setEditTriggers(QAbstractItemView::DoubleClicked);
+//    d->view->setEditTriggers(QAbstractItemView::NoEditTriggers);
+    d->view->setEditTriggers(QAbstractItemView::DoubleClicked | QAbstractItemView::SelectedClicked);
+    d->view->setAlternatingRowColors(true);
+    d->view->setSelectionBehavior(QAbstractItemView::SelectRows);
+    d->view->setSortingEnabled(true);
+    d->view->header()->setDefaultAlignment(Qt::AlignLeft);
+//    d->view->header()->setSortIndicatorShown(true);
+//    d->view->header()->setResizeMode(QHeaderView::ResizeToContents);
+
+    QVBoxLayout *vbox = new QVBoxLayout(this);
+    vbox->setMargin(0);
+    vbox->addWidget(d->view);
+}
+
+QScriptDebuggerLocalsWidget::~QScriptDebuggerLocalsWidget()
+{
+}
+
+/*!
+  \reimp
+*/
+QScriptDebuggerLocalsModel *QScriptDebuggerLocalsWidget::localsModel() const
+{
+    Q_D(const QScriptDebuggerLocalsWidget);
+    if (!d->proxy)
+        return 0;
+    return qobject_cast<QScriptDebuggerLocalsModel*>(d->proxy->sourceModel());
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerLocalsWidget::setLocalsModel(QScriptDebuggerLocalsModel *model)
+{
+    Q_D(QScriptDebuggerLocalsWidget);
+    if (localsModel()) {
+        QObject::disconnect(localsModel(), 0, d->view, 0);
+    }
+    if (model) {
+        QObject::connect(model, SIGNAL(scopeObjectAvailable(QModelIndex)),
+                         this, SLOT(_q_expandIndex(QModelIndex)));
+    }
+    if (!d->proxy) {
+        d->proxy = new CustomProxyModel(this);
+        d->view->sortByColumn(0, Qt::AscendingOrder);
+    }
+    d->proxy->setSourceModel(model);
+    d->view->setModel(d->proxy);
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerLocalsWidget::expand(const QModelIndex &index)
+{
+    Q_D(QScriptDebuggerLocalsWidget);
+    d->view->expand(index);
+    d->view->setFirstColumnSpanned(index.row(), QModelIndex(), true);
+}
+
+QT_END_NAMESPACE
+
+#include "qscriptdebuggerlocalswidget.moc"
+
+#include "moc_qscriptdebuggerlocalswidget_p.cpp"
diff --git a/src/scripttools/debugging/qscriptdebuggerlocalswidget_p.h b/src/scripttools/debugging/qscriptdebuggerlocalswidget_p.h
new file mode 100644
index 0000000..d1e32df
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerlocalswidget_p.h
@@ -0,0 +1,85 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERLOCALSWIDGET_P_H
+#define QSCRIPTDEBUGGERLOCALSWIDGET_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscriptdebuggerlocalswidgetinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerLocalsWidgetPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerLocalsWidget:
+    public QScriptDebuggerLocalsWidgetInterface
+{
+    Q_OBJECT
+public:
+    QScriptDebuggerLocalsWidget(QWidget *parent = 0);
+    ~QScriptDebuggerLocalsWidget();
+
+    QScriptDebuggerLocalsModel *localsModel() const;
+    void setLocalsModel(QScriptDebuggerLocalsModel *model);
+
+    void expand(const QModelIndex &index);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerLocalsWidget)
+    Q_DISABLE_COPY(QScriptDebuggerLocalsWidget)
+
+    Q_PRIVATE_SLOT(d_func(), void _q_onCompletionTaskFinished())
+    Q_PRIVATE_SLOT(d_func(), void _q_insertCompletion(const QString &))
+    Q_PRIVATE_SLOT(d_func(), void _q_expandIndex(const QModelIndex &))
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerlocalswidgetinterface.cpp b/src/scripttools/debugging/qscriptdebuggerlocalswidgetinterface.cpp
new file mode 100644
index 0000000..9cbbb2f
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerlocalswidgetinterface.cpp
@@ -0,0 +1,79 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerlocalswidgetinterface_p.h"
+#include "qscriptdebuggerlocalswidgetinterface_p_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QScriptDebuggerLocalsWidgetInterfacePrivate::QScriptDebuggerLocalsWidgetInterfacePrivate()
+{
+    completionProvider = 0;
+}
+
+QScriptDebuggerLocalsWidgetInterfacePrivate::~QScriptDebuggerLocalsWidgetInterfacePrivate()
+{
+}
+
+QScriptDebuggerLocalsWidgetInterface::~QScriptDebuggerLocalsWidgetInterface()
+{
+}
+
+QScriptDebuggerLocalsWidgetInterface::QScriptDebuggerLocalsWidgetInterface(
+    QScriptDebuggerLocalsWidgetInterfacePrivate &dd,
+    QWidget *parent, Qt::WindowFlags flags)
+    : QWidget(dd, parent, flags)
+{
+}
+
+QScriptCompletionProviderInterface *QScriptDebuggerLocalsWidgetInterface::completionProvider() const
+{
+    Q_D(const QScriptDebuggerLocalsWidgetInterface);
+    return d->completionProvider;
+}
+
+void QScriptDebuggerLocalsWidgetInterface::setCompletionProvider(QScriptCompletionProviderInterface *completionProvider)
+{
+    Q_D(QScriptDebuggerLocalsWidgetInterface);
+    d->completionProvider = completionProvider;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerlocalswidgetinterface_p.h b/src/scripttools/debugging/qscriptdebuggerlocalswidgetinterface_p.h
new file mode 100644
index 0000000..36feb2a
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerlocalswidgetinterface_p.h
@@ -0,0 +1,92 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERLOCALSWIDGETINTERFACE_P_H
+#define QSCRIPTDEBUGGERLOCALSWIDGETINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/qwidget.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerLocalsModel;
+class QModelIndex;
+class QScriptCompletionProviderInterface;
+
+class QScriptDebuggerLocalsWidgetInterfacePrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerLocalsWidgetInterface:
+    public QWidget
+{
+    Q_OBJECT
+public:
+    ~QScriptDebuggerLocalsWidgetInterface();
+
+    QScriptCompletionProviderInterface *completionProvider() const;
+    void setCompletionProvider(QScriptCompletionProviderInterface *completionProvider);
+
+    virtual QScriptDebuggerLocalsModel *localsModel() const = 0;
+    virtual void setLocalsModel(QScriptDebuggerLocalsModel *model) = 0;
+
+    virtual void expand(const QModelIndex &index) = 0;
+
+protected:
+    QScriptDebuggerLocalsWidgetInterface(
+        QScriptDebuggerLocalsWidgetInterfacePrivate &dd,
+        QWidget *parent, Qt::WindowFlags flags);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerLocalsWidgetInterface)
+    Q_DISABLE_COPY(QScriptDebuggerLocalsWidgetInterface)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerlocalswidgetinterface_p_p.h b/src/scripttools/debugging/qscriptdebuggerlocalswidgetinterface_p_p.h
new file mode 100644
index 0000000..3351cf4
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerlocalswidgetinterface_p_p.h
@@ -0,0 +1,76 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERLOCALSWIDGETINTERFACE_P_P_H
+#define QSCRIPTDEBUGGERLOCALSWIDGETINTERFACE_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qwidget_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptCompletionProviderInterface;
+
+class QScriptDebuggerLocalsWidgetInterface;
+class QScriptDebuggerLocalsWidgetInterfacePrivate
+    : public QWidgetPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerLocalsWidgetInterface)
+public:
+    QScriptDebuggerLocalsWidgetInterfacePrivate();
+    ~QScriptDebuggerLocalsWidgetInterfacePrivate();
+
+    QScriptCompletionProviderInterface *completionProvider;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerobjectsnapshotdelta_p.h b/src/scripttools/debugging/qscriptdebuggerobjectsnapshotdelta_p.h
new file mode 100644
index 0000000..3e85f5e
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerobjectsnapshotdelta_p.h
@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGEROBJECTSNAPSHOTDELTA_P_H
+#define QSCRIPTDEBUGGEROBJECTSNAPSHOTDELTA_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+#include <QtCore/qstringlist.h>
+#include "qscriptdebuggervalueproperty_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QDataStream;
+
+class Q_AUTOTEST_EXPORT QScriptDebuggerObjectSnapshotDelta
+{
+public:
+    QStringList removedProperties;
+    QScriptDebuggerValuePropertyList changedProperties;
+    QScriptDebuggerValuePropertyList addedProperties;
+};
+
+Q_AUTOTEST_EXPORT QDataStream &operator<<(QDataStream &, const QScriptDebuggerObjectSnapshotDelta &);
+Q_AUTOTEST_EXPORT QDataStream &operator>>(QDataStream &, QScriptDebuggerObjectSnapshotDelta &);
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerresponse.cpp b/src/scripttools/debugging/qscriptdebuggerresponse.cpp
new file mode 100644
index 0000000..af338f2
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerresponse.cpp
@@ -0,0 +1,349 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerresponse_p.h"
+#include "qscriptdebuggervalue_p.h"
+
+#include <QtScript/qscriptcontextinfo.h>
+#include <QtCore/qdatastream.h>
+
+Q_DECLARE_METATYPE(QScriptBreakpointData)
+Q_DECLARE_METATYPE(QScriptBreakpointMap)
+Q_DECLARE_METATYPE(QScriptScriptData)
+Q_DECLARE_METATYPE(QScriptScriptMap)
+Q_DECLARE_METATYPE(QScriptDebuggerValue)
+Q_DECLARE_METATYPE(QScriptDebuggerValueList)
+Q_DECLARE_METATYPE(QScriptDebuggerValueProperty)
+Q_DECLARE_METATYPE(QScriptDebuggerValuePropertyList)
+Q_DECLARE_METATYPE(QScriptContextInfo)
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \since 4.5
+  \class QScriptDebuggerResponse
+  \internal
+
+  \brief The QScriptDebuggerResponse class represents a front-end's response to a QScriptDebuggerCommand.
+
+  A response contains an error code and result.
+*/
+
+class QScriptDebuggerResponsePrivate
+{
+public:
+    QScriptDebuggerResponsePrivate();
+    ~QScriptDebuggerResponsePrivate();
+
+    QScriptDebuggerResponse::Error error;
+    QVariant result;
+    bool async;
+};
+
+QScriptDebuggerResponsePrivate::QScriptDebuggerResponsePrivate()
+{
+    error = QScriptDebuggerResponse::NoError;
+    async = false;
+}
+
+QScriptDebuggerResponsePrivate::~QScriptDebuggerResponsePrivate()
+{
+}
+
+QScriptDebuggerResponse::QScriptDebuggerResponse()
+    : d_ptr(new QScriptDebuggerResponsePrivate)
+{
+}
+
+QScriptDebuggerResponse::QScriptDebuggerResponse(const QScriptDebuggerResponse &other)
+    : d_ptr(new QScriptDebuggerResponsePrivate)
+{
+    *d_ptr = *other.d_ptr;
+}
+
+QScriptDebuggerResponse::~QScriptDebuggerResponse()
+{
+}
+
+QScriptDebuggerResponse &QScriptDebuggerResponse::operator=(const QScriptDebuggerResponse &other)
+{
+    *d_ptr = *other.d_ptr;
+    return *this;
+}
+
+/*!
+  Returns the error code of this response.
+*/
+QScriptDebuggerResponse::Error QScriptDebuggerResponse::error() const
+{
+    Q_D(const QScriptDebuggerResponse);
+    return d->error;
+}
+
+/*!
+  Sets the \a error code of this response.
+*/
+void QScriptDebuggerResponse::setError(Error error)
+{
+    Q_D(QScriptDebuggerResponse);
+    d->error = error;
+}
+
+/*!
+  Returns the result of this response. This function is provided for
+  convenience.
+*/
+QVariant QScriptDebuggerResponse::result() const
+{
+    Q_D(const QScriptDebuggerResponse);
+    return d->result;
+}
+
+/*!
+  Sets the Result attribute of this response to the given \a
+  value. This function is provided for convenience.
+*/
+void QScriptDebuggerResponse::setResult(const QVariant &value)
+{
+    Q_D(QScriptDebuggerResponse);
+    d->result = value;
+}
+
+void QScriptDebuggerResponse::setResult(int value)
+{
+    Q_D(QScriptDebuggerResponse);
+    d->result = value;
+}
+
+void QScriptDebuggerResponse::setResult(const QString &value)
+{
+    Q_D(QScriptDebuggerResponse);
+    d->result = value;
+}
+
+void QScriptDebuggerResponse::setResult(const QScriptBreakpointData &data)
+{
+    Q_D(QScriptDebuggerResponse);
+    d->result = QVariant::fromValue(data);
+}
+
+void QScriptDebuggerResponse::setResult(const QScriptBreakpointMap &breakpoints)
+{
+    Q_D(QScriptDebuggerResponse);
+    d->result = QVariant::fromValue(breakpoints);
+}
+
+void QScriptDebuggerResponse::setResult(const QScriptScriptMap &scripts)
+{
+    Q_D(QScriptDebuggerResponse);
+    d->result = QVariant::fromValue(scripts);
+}
+
+void QScriptDebuggerResponse::setResult(const QScriptScriptData &data)
+{
+    Q_D(QScriptDebuggerResponse);
+    d->result = QVariant::fromValue(data);
+}
+
+void QScriptDebuggerResponse::setResult(const QScriptDebuggerValue &value)
+{
+    Q_D(QScriptDebuggerResponse);
+    d->result = QVariant::fromValue(value);
+}
+
+void QScriptDebuggerResponse::setResult(const QScriptDebuggerValueList &values)
+{
+    Q_D(QScriptDebuggerResponse);
+    d->result = QVariant::fromValue(values);
+}
+
+void QScriptDebuggerResponse::setResult(const QScriptDebuggerValuePropertyList &props)
+{
+    Q_D(QScriptDebuggerResponse);
+    d->result = QVariant::fromValue(props);
+}
+
+void QScriptDebuggerResponse::setResult(const QScriptContextInfo &info)
+{
+    Q_D(QScriptDebuggerResponse);
+    d->result = QVariant::fromValue(info);
+}
+
+int QScriptDebuggerResponse::resultAsInt() const
+{
+    Q_D(const QScriptDebuggerResponse);
+    return d->result.toInt();
+}
+
+qint64 QScriptDebuggerResponse::resultAsLongLong() const
+{
+    Q_D(const QScriptDebuggerResponse);
+    return d->result.toLongLong();
+}
+
+QString QScriptDebuggerResponse::resultAsString() const
+{
+    Q_D(const QScriptDebuggerResponse);
+    return d->result.toString();
+}
+
+QScriptBreakpointData QScriptDebuggerResponse::resultAsBreakpointData() const
+{
+    Q_D(const QScriptDebuggerResponse);
+    return qvariant_cast<QScriptBreakpointData>(d->result);
+}
+
+QScriptBreakpointMap QScriptDebuggerResponse::resultAsBreakpoints() const
+{
+    Q_D(const QScriptDebuggerResponse);
+    return qvariant_cast<QScriptBreakpointMap>(d->result);
+}
+
+QScriptScriptMap QScriptDebuggerResponse::resultAsScripts() const
+{
+    Q_D(const QScriptDebuggerResponse);
+    return qvariant_cast<QScriptScriptMap>(d->result);
+}
+
+QScriptScriptData QScriptDebuggerResponse::resultAsScriptData() const
+{
+    Q_D(const QScriptDebuggerResponse);
+    return qvariant_cast<QScriptScriptData>(d->result);
+}
+
+QScriptDebuggerValue QScriptDebuggerResponse::resultAsScriptValue() const
+{
+    Q_D(const QScriptDebuggerResponse);
+    return qvariant_cast<QScriptDebuggerValue>(d->result);
+}
+
+QScriptDebuggerValueList QScriptDebuggerResponse::resultAsScriptValueList() const
+{
+    Q_D(const QScriptDebuggerResponse);
+    return qvariant_cast<QScriptDebuggerValueList>(d->result);
+}
+
+QScriptDebuggerValuePropertyList QScriptDebuggerResponse::resultAsScriptValuePropertyList() const
+{
+    Q_D(const QScriptDebuggerResponse);
+    return qvariant_cast<QScriptDebuggerValuePropertyList>(d->result);
+}
+
+QScriptContextInfo QScriptDebuggerResponse::resultAsContextInfo() const
+{
+    Q_D(const QScriptDebuggerResponse);
+    return qvariant_cast<QScriptContextInfo>(d->result);
+}
+
+bool QScriptDebuggerResponse::async() const
+{
+    Q_D(const QScriptDebuggerResponse);
+    return d->async;
+}
+
+void QScriptDebuggerResponse::setAsync(bool async)
+{
+    Q_D(QScriptDebuggerResponse);
+    d->async = async;
+}
+
+/*!
+  Returns true if this QScriptDebuggerResponse is equal to the \a other
+  response, otherwise returns false.
+*/
+bool QScriptDebuggerResponse::operator==(const QScriptDebuggerResponse &other) const
+{
+    Q_D(const QScriptDebuggerResponse);
+    const QScriptDebuggerResponsePrivate *od = other.d_func();
+    if (d == od)
+        return true;
+    if (!d || !od)
+        return false;
+    return ((d->error == od->error)
+            && (d->result == od->result)
+            && (d->async == od->async));
+}
+
+/*!
+  Returns true if this QScriptDebuggerResponse is not equal to the \a
+  other response, otherwise returns false.
+*/
+bool QScriptDebuggerResponse::operator!=(const QScriptDebuggerResponse &other) const
+{
+    return !(*this == other);
+}
+
+/*!
+  \fn QDataStream &operator<<(QDataStream &stream, const QScriptDebuggerResponse &response)
+  \relates QScriptDebuggerResponse
+
+  Writes the given \a response to the specified \a stream.
+*/
+QDataStream &operator<<(QDataStream &out, const QScriptDebuggerResponse &response)
+{
+    const QScriptDebuggerResponsePrivate *d = response.d_ptr.data();
+    out << (quint32)d->error;
+    out << d->result;
+    out << d->async;
+    return out;
+}
+
+/*!
+  \fn QDataStream &operator>>(QDataStream &stream, QScriptDebuggerResponse &response)
+  \relates QScriptDebuggerResponse
+
+  Reads a QScriptDebuggerResponse from the specified \a stream into the
+  given \a response.
+*/
+QDataStream &operator>>(QDataStream &in, QScriptDebuggerResponse &response)
+{
+    QScriptDebuggerResponsePrivate *d = response.d_ptr.data();
+
+    quint32 error;
+    in >> error;
+    d->error = QScriptDebuggerResponse::Error(error);
+    in >> d->result;
+    in >> d->async;
+
+    return in;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerresponse_p.h b/src/scripttools/debugging/qscriptdebuggerresponse_p.h
new file mode 100644
index 0000000..d05801b
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerresponse_p.h
@@ -0,0 +1,140 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERRESPONSE_P_H
+#define QSCRIPTDEBUGGERRESPONSE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+#include <QtCore/qscopedpointer.h>
+#include <QtCore/qmap.h>
+#include <QtCore/qvariant.h>
+
+#include "qscriptbreakpointdata_p.h"
+#include "qscriptscriptdata_p.h"
+#include "qscriptdebuggervalue_p.h"
+#include "qscriptdebuggervalueproperty_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QDataStream;
+class QScriptContextInfo;
+
+class QScriptDebuggerResponsePrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerResponse
+{
+public:
+    friend Q_AUTOTEST_EXPORT QDataStream &operator<<(QDataStream &, const QScriptDebuggerResponse &);
+    friend Q_AUTOTEST_EXPORT QDataStream &operator>>(QDataStream &, QScriptDebuggerResponse &);
+
+    enum Error {
+        NoError,
+        InvalidContextIndex,
+        InvalidArgumentIndex,
+        InvalidScriptID,
+        InvalidBreakpointID,
+        UserError = 1000,
+        MaxUserError = 32767
+    };
+
+    QScriptDebuggerResponse();
+    QScriptDebuggerResponse(const QScriptDebuggerResponse &other);
+    ~QScriptDebuggerResponse();
+
+    Error error() const;
+    void setError(Error error);
+
+    QVariant result() const;
+    void setResult(const QVariant &value);
+
+    void setResult(int value);
+    void setResult(const QString &value);
+    void setResult(const QScriptBreakpointData &data);
+    void setResult(const QScriptBreakpointMap &breakpoints);
+    void setResult(const QScriptScriptMap &scripts);
+    void setResult(const QScriptScriptData &data);
+    void setResult(const QScriptDebuggerValue &value);
+    void setResult(const QScriptDebuggerValueList &value);
+    void setResult(const QScriptDebuggerValuePropertyList &props);
+    void setResult(const QScriptContextInfo &info);
+
+    int resultAsInt() const;
+    qint64 resultAsLongLong() const;
+    QString resultAsString() const;
+    QScriptBreakpointData resultAsBreakpointData() const;
+    QScriptBreakpointMap resultAsBreakpoints() const;
+    QScriptScriptMap resultAsScripts() const;
+    QScriptScriptData resultAsScriptData() const;
+    QScriptDebuggerValue resultAsScriptValue() const;
+    QScriptDebuggerValueList resultAsScriptValueList() const;
+    QScriptDebuggerValuePropertyList resultAsScriptValuePropertyList() const;
+    QScriptContextInfo resultAsContextInfo() const;
+
+    bool async() const;
+    void setAsync(bool async);
+
+    QScriptDebuggerResponse &operator=(const QScriptDebuggerResponse &other);
+
+    bool operator==(const QScriptDebuggerResponse &other) const;
+    bool operator!=(const QScriptDebuggerResponse &other) const;
+
+private:
+    QScopedPointer<QScriptDebuggerResponsePrivate> d_ptr;
+
+    Q_DECLARE_PRIVATE(QScriptDebuggerResponse)
+};
+
+Q_AUTOTEST_EXPORT QDataStream &operator<<(QDataStream &, const QScriptDebuggerResponse &);
+Q_AUTOTEST_EXPORT QDataStream &operator>>(QDataStream &, QScriptDebuggerResponse &);
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerresponsehandlerinterface_p.h b/src/scripttools/debugging/qscriptdebuggerresponsehandlerinterface_p.h
new file mode 100644
index 0000000..a191c5e
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerresponsehandlerinterface_p.h
@@ -0,0 +1,73 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERRESPONSEHANDLERINTERFACE_P_H
+#define QSCRIPTDEBUGGERRESPONSEHANDLERINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerResponse;
+
+class Q_AUTOTEST_EXPORT QScriptDebuggerResponseHandlerInterface
+{
+public:
+    virtual ~QScriptDebuggerResponseHandlerInterface() {}
+
+    virtual void handleResponse(const QScriptDebuggerResponse &response,
+                                int commandId) = 0;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerscriptedconsolecommand.cpp b/src/scripttools/debugging/qscriptdebuggerscriptedconsolecommand.cpp
new file mode 100644
index 0000000..37634c8
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerscriptedconsolecommand.cpp
@@ -0,0 +1,430 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerscriptedconsolecommand_p.h"
+#include "qscriptdebuggerconsolecommand_p_p.h"
+#include "qscriptdebuggerconsolecommandjob_p.h"
+#include "qscriptdebuggerconsolecommandjob_p_p.h"
+#include "qscriptmessagehandlerinterface_p.h"
+#include "qscriptdebuggerconsoleglobalobject_p.h"
+#include "qscriptdebuggerresponse_p.h"
+#include "qscriptdebuggercommandschedulerinterface_p.h"
+
+#include <QtCore/qstring.h>
+#include <QtCore/qstringlist.h>
+#include <QtScript/qscriptengine.h>
+#include <QtScript/qscriptvalue.h>
+#include <QtScript/qscriptvalueiterator.h>
+#include <QtScript/qscriptcontextinfo.h>
+#include <QtCore/qdebug.h>
+
+Q_DECLARE_METATYPE(QScriptDebuggerResponse)
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \since 4.5
+  \class QScriptDebuggerScriptedConsoleCommand
+  \internal
+
+  \brief The QScriptDebuggerScriptedConsoleCommand class encapsulates a command defined in a script.
+*/
+
+class QScriptDebuggerScriptedConsoleCommandPrivate
+    : public QScriptDebuggerConsoleCommandPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerScriptedConsoleCommand)
+public:
+    QScriptDebuggerScriptedConsoleCommandPrivate();
+    ~QScriptDebuggerScriptedConsoleCommandPrivate();
+
+    QString name;
+    QString group;
+    QString shortDescription;
+    QString longDescription;
+    QStringList aliases;
+    QStringList seeAlso;
+    QStringList argumentTypes;
+    QStringList subCommands;
+    QScriptValue globalObject;
+    QScriptValue execFunction;
+    QScriptValue responseFunction;
+};
+
+QScriptDebuggerScriptedConsoleCommandPrivate::QScriptDebuggerScriptedConsoleCommandPrivate()
+{
+}
+
+QScriptDebuggerScriptedConsoleCommandPrivate::~QScriptDebuggerScriptedConsoleCommandPrivate()
+{
+}
+
+QScriptDebuggerScriptedConsoleCommand::QScriptDebuggerScriptedConsoleCommand(
+    const QString &name, const QString &group,
+    const QString &shortDescription, const QString &longDescription,
+    const QStringList &aliases, const QStringList &seeAlso,
+    const QStringList &argumentTypes, const QStringList &subCommands,
+    const QScriptValue &globalObject,
+    const QScriptValue &execFunction, const QScriptValue &responseFunction)
+    : QScriptDebuggerConsoleCommand(*new QScriptDebuggerScriptedConsoleCommandPrivate)
+{
+    Q_D(QScriptDebuggerScriptedConsoleCommand);
+    d->name = name;
+    d->group = group;
+    d->shortDescription = shortDescription;
+    d->longDescription = longDescription;
+    d->aliases = aliases;
+    d->seeAlso = seeAlso;
+    d->argumentTypes = argumentTypes;
+    d->subCommands = subCommands;
+    d->globalObject = globalObject;
+    d->execFunction = execFunction;
+    d->responseFunction = responseFunction;
+}
+
+QScriptDebuggerScriptedConsoleCommand::~QScriptDebuggerScriptedConsoleCommand()
+{
+}
+
+class QScriptDebuggerScriptedConsoleCommandJobPrivate;
+class QScriptDebuggerScriptedConsoleCommandJob
+    : public QScriptDebuggerConsoleCommandJob,
+      public QScriptDebuggerCommandSchedulerInterface
+{
+public:
+    QScriptDebuggerScriptedConsoleCommandJob(
+        QScriptDebuggerScriptedConsoleCommandPrivate *command,
+        const QStringList &arguments,
+        QScriptDebuggerConsole *console,
+        QScriptMessageHandlerInterface *messageHandler,
+        QScriptDebuggerCommandSchedulerInterface *commandScheduler);
+    ~QScriptDebuggerScriptedConsoleCommandJob();
+
+    int scheduleCommand(
+        const QScriptDebuggerCommand &command,
+        QScriptDebuggerResponseHandlerInterface *responseHandler);
+
+    void start();
+    void handleResponse(const QScriptDebuggerResponse &response,
+                        int commandId);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerScriptedConsoleCommandJob)
+    Q_DISABLE_COPY(QScriptDebuggerScriptedConsoleCommandJob)
+};
+
+class QScriptDebuggerScriptedConsoleCommandJobPrivate
+    : public QScriptDebuggerConsoleCommandJobPrivate
+{
+public:
+    QScriptDebuggerScriptedConsoleCommandJobPrivate() : command(0), commandCount(0) {}
+    ~QScriptDebuggerScriptedConsoleCommandJobPrivate() {}
+
+    QScriptDebuggerScriptedConsoleCommandPrivate *command;
+    QStringList arguments;
+    int commandCount;
+};
+
+QScriptDebuggerScriptedConsoleCommandJob::QScriptDebuggerScriptedConsoleCommandJob(
+    QScriptDebuggerScriptedConsoleCommandPrivate *command,
+    const QStringList &arguments,
+    QScriptDebuggerConsole *console,
+    QScriptMessageHandlerInterface *messageHandler,
+    QScriptDebuggerCommandSchedulerInterface *commandScheduler)
+    : QScriptDebuggerConsoleCommandJob(*new QScriptDebuggerScriptedConsoleCommandJobPrivate,
+                                       console, messageHandler, commandScheduler)
+{
+    Q_D(QScriptDebuggerScriptedConsoleCommandJob);
+    d->command = command;
+    d->arguments = arguments;
+}
+
+QScriptDebuggerScriptedConsoleCommandJob::~QScriptDebuggerScriptedConsoleCommandJob()
+{
+}
+
+int QScriptDebuggerScriptedConsoleCommandJob::scheduleCommand(
+    const QScriptDebuggerCommand &command,
+    QScriptDebuggerResponseHandlerInterface *responseHandler)
+{
+    Q_D(QScriptDebuggerScriptedConsoleCommandJob);
+    ++d->commandCount;
+    return commandScheduler()->scheduleCommand(command, responseHandler);
+}
+
+void QScriptDebuggerScriptedConsoleCommandJob::start()
+{
+    Q_D(QScriptDebuggerScriptedConsoleCommandJob);
+    QScriptEngine *engine = d->command->globalObject.engine();
+    engine->setGlobalObject(d->command->globalObject);
+    QScriptValueList args;
+    for (int i = 0; i < d->arguments.size(); ++i)
+        args.append(QScriptValue(engine, d->arguments.at(i)));
+    QScriptDebuggerConsoleGlobalObject *global;
+    global = qobject_cast<QScriptDebuggerConsoleGlobalObject*>(engine->globalObject().toQObject());
+    Q_ASSERT(global != 0);
+    global->setScheduler(this);
+    global->setResponseHandler(this);
+    global->setMessageHandler(d->messageHandler);
+    global->setConsole(d->console);
+    d->commandCount = 0;
+    QScriptValue ret = d->command->execFunction.call(QScriptValue(), args);
+    global->setScheduler(0);
+    global->setResponseHandler(0);
+    global->setMessageHandler(0);
+    global->setConsole(0);
+    if (ret.isError()) {
+        qWarning("*** internal error: %s", qPrintable(ret.toString()));
+    }
+    if (d->commandCount == 0)
+        finish();
+}
+
+void QScriptDebuggerScriptedConsoleCommandJob::handleResponse(
+    const QScriptDebuggerResponse &response,
+    int commandId)
+{
+    Q_D(QScriptDebuggerScriptedConsoleCommandJob);
+    // ### generalize
+    QScriptEngine *engine = d->command->globalObject.engine();
+    engine->setGlobalObject(d->command->globalObject);
+    QScriptValueList args;
+    args.append(engine->toScriptValue(response));
+    args.append(QScriptValue(engine, commandId));
+    QScriptDebuggerConsoleGlobalObject *global;
+    global = qobject_cast<QScriptDebuggerConsoleGlobalObject*>(d->command->globalObject.toQObject());
+    Q_ASSERT(global != 0);
+    global->setScheduler(this);
+    global->setResponseHandler(this);
+    global->setMessageHandler(d->messageHandler);
+    global->setConsole(d->console);
+    d->commandCount = 0;
+    QScriptValue ret = d->command->responseFunction.call(QScriptValue(), args);
+    global->setScheduler(0);
+    global->setResponseHandler(0);
+    global->setMessageHandler(0);
+    global->setConsole(0);
+    if (ret.isError()) {
+        qWarning("*** internal error: %s", qPrintable(ret.toString()));
+    }
+    if (d->commandCount == 0)
+        finish();
+}
+
+/*!
+  \internal
+*/
+QString QScriptDebuggerScriptedConsoleCommand::name() const
+{
+    Q_D(const QScriptDebuggerScriptedConsoleCommand);
+    return d->name;
+}
+
+/*!
+  \internal
+*/
+QString QScriptDebuggerScriptedConsoleCommand::group() const
+{
+    Q_D(const QScriptDebuggerScriptedConsoleCommand);
+    return d->group;
+}
+
+/*!
+  \internal
+*/
+QString QScriptDebuggerScriptedConsoleCommand::shortDescription() const
+{
+    Q_D(const QScriptDebuggerScriptedConsoleCommand);
+    return d->shortDescription;
+}
+
+/*!
+  \internal
+*/
+QString QScriptDebuggerScriptedConsoleCommand::longDescription() const
+{
+    Q_D(const QScriptDebuggerScriptedConsoleCommand);
+    return d->longDescription;
+}
+
+/*!
+  \internal
+*/
+QStringList QScriptDebuggerScriptedConsoleCommand::aliases() const
+{
+    Q_D(const QScriptDebuggerScriptedConsoleCommand);
+    return d->aliases;
+}
+
+/*!
+  \internal
+*/
+QStringList QScriptDebuggerScriptedConsoleCommand::seeAlso() const
+{
+    Q_D(const QScriptDebuggerScriptedConsoleCommand);
+    return d->seeAlso;
+}
+
+/*!
+  \internal
+*/
+QStringList QScriptDebuggerScriptedConsoleCommand::argumentTypes() const
+{
+    Q_D(const QScriptDebuggerScriptedConsoleCommand);
+    return d->argumentTypes;
+}
+
+/*!
+  \internal
+*/
+QStringList QScriptDebuggerScriptedConsoleCommand::subCommands() const
+{
+    Q_D(const QScriptDebuggerScriptedConsoleCommand);
+    return d->subCommands;
+}
+
+/*!
+  \internal
+*/
+QScriptDebuggerConsoleCommandJob *QScriptDebuggerScriptedConsoleCommand::createJob(
+    const QStringList &arguments,
+    QScriptDebuggerConsole *console,
+    QScriptMessageHandlerInterface *messageHandler,
+    QScriptDebuggerCommandSchedulerInterface *commandScheduler)
+{
+    Q_D(QScriptDebuggerScriptedConsoleCommand);
+    return new QScriptDebuggerScriptedConsoleCommandJob(
+        d, arguments, console, messageHandler, commandScheduler);
+}
+
+/*!
+  Parses a command defined by the given \a program.
+  Returns an object that encapsulates the command, or 0 if parsing failed.
+*/
+QScriptDebuggerScriptedConsoleCommand *QScriptDebuggerScriptedConsoleCommand::parse(
+    const QString &program, const QString &fileName,
+    QScriptEngine *engine, QScriptMessageHandlerInterface *messageHandler)
+{
+    // create a custom global object
+    QScriptDebuggerConsoleGlobalObject *cppGlobal = new QScriptDebuggerConsoleGlobalObject();
+    QScriptValue global = engine->newQObject(cppGlobal,
+                                             QScriptEngine::ScriptOwnership,
+                                             QScriptEngine::ExcludeSuperClassContents);
+    {
+        QScriptValueIterator it(engine->globalObject());
+        while (it.hasNext()) {
+            it.next();
+            global.setProperty(it.scriptName(), it.value(), it.flags());
+        }
+    }
+    engine->setGlobalObject(global);
+
+    cppGlobal->setMessageHandler(messageHandler);
+    QScriptValue ret = engine->evaluate(program, fileName);
+    cppGlobal->setMessageHandler(0);
+    if (engine->hasUncaughtException()) {
+        messageHandler->message(QtCriticalMsg, ret.toString(), fileName,
+                                engine->uncaughtExceptionLineNumber());
+        return 0;
+    }
+
+    QScriptValue name = global.property(QLatin1String("name"));
+    if (!name.isString()) {
+        messageHandler->message(QtCriticalMsg, QLatin1String("command definition lacks a name"), fileName);
+        return 0;
+    }
+    QString nameStr = name.toString();
+
+    QScriptValue group = global.property(QLatin1String("group"));
+    if (!group.isString()) {
+        messageHandler->message(QtCriticalMsg, QString::fromLatin1("definition of command \"%0\" lacks a group name")
+                                .arg(nameStr), fileName);
+        return 0;
+    }
+    QString groupStr = group.toString();
+
+    QScriptValue shortDesc = global.property(QLatin1String("shortDescription"));
+    if (!shortDesc.isString()) {
+        messageHandler->message(QtCriticalMsg, QString::fromLatin1("definition of command \"%0\" lacks shortDescription")
+                                .arg(nameStr), fileName);
+        return 0;
+    }
+    QString shortDescStr = shortDesc.toString();
+
+    QScriptValue longDesc = global.property(QLatin1String("longDescription"));
+    if (!longDesc.isString()) {
+        messageHandler->message(QtCriticalMsg, QString::fromLatin1("definition of command \"%0\" lacks longDescription")
+                                .arg(nameStr), fileName);
+        return 0;
+    }
+    QString longDescStr = longDesc.toString();
+
+    QStringList aliases;
+    qScriptValueToSequence(global.property(QLatin1String("aliases")), aliases);
+
+    QStringList seeAlso;
+    qScriptValueToSequence(global.property(QLatin1String("seeAlso")), seeAlso);
+
+    QStringList argTypes;
+    qScriptValueToSequence(global.property(QLatin1String("argumentTypes")), argTypes);
+
+    QStringList subCommands;
+    qScriptValueToSequence(global.property(QLatin1String("subCommands")), subCommands);
+
+    QScriptValue execFunction = global.property(QLatin1String("execute"));
+    if (!execFunction.isFunction()) {
+        messageHandler->message(QtCriticalMsg, QString::fromLatin1("definition of command \"%0\" lacks execute() function")
+                                .arg(nameStr), fileName);
+        return 0;
+    }
+
+    QScriptValue responseFunction = global.property(QLatin1String("handleResponse"));
+
+    QScriptDebuggerScriptedConsoleCommand *result = new QScriptDebuggerScriptedConsoleCommand(
+        nameStr, groupStr,
+        shortDescStr, longDescStr,
+        aliases, seeAlso,
+        argTypes, subCommands,
+        global, execFunction, responseFunction);
+    return result;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerscriptedconsolecommand_p.h b/src/scripttools/debugging/qscriptdebuggerscriptedconsolecommand_p.h
new file mode 100644
index 0000000..58fc103
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerscriptedconsolecommand_p.h
@@ -0,0 +1,108 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERSCRIPTEDCONSOLECOMMAND_P_H
+#define QSCRIPTDEBUGGERSCRIPTEDCONSOLECOMMAND_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscriptdebuggerconsolecommand_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptEngine;
+class QScriptValue;
+
+class QScriptDebuggerScriptedConsoleCommandPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerScriptedConsoleCommand
+    : public QScriptDebuggerConsoleCommand
+{
+protected:
+    QScriptDebuggerScriptedConsoleCommand(const QString &name,
+                                          const QString &group,
+                                          const QString &shortDescription,
+                                          const QString &longDescription,
+                                          const QStringList &aliases,
+                                          const QStringList &seeAlso,
+                                          const QStringList &argumentTypes,
+                                          const QStringList &subCommands,
+                                          const QScriptValue &globalObject,
+                                          const QScriptValue &execFunction,
+                                          const QScriptValue &responseFunction);
+public:
+    ~QScriptDebuggerScriptedConsoleCommand();
+
+    static QScriptDebuggerScriptedConsoleCommand *parse(
+        const QString &program, const QString &fileName,
+        QScriptEngine *engine, QScriptMessageHandlerInterface *messageHandler);
+
+    QString name() const;
+    QString group() const;
+    QString shortDescription() const;
+    QString longDescription() const;
+    QStringList aliases() const;
+    QStringList seeAlso() const;
+    QStringList argumentTypes() const;
+    QStringList subCommands() const;
+
+    QScriptDebuggerConsoleCommandJob *createJob(
+        const QStringList &arguments,
+        QScriptDebuggerConsole *console,
+        QScriptMessageHandlerInterface *messageHandler,
+        QScriptDebuggerCommandSchedulerInterface *commandScheduler);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerScriptedConsoleCommand)
+    Q_DISABLE_COPY(QScriptDebuggerScriptedConsoleCommand)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerscriptsmodel.cpp b/src/scripttools/debugging/qscriptdebuggerscriptsmodel.cpp
new file mode 100644
index 0000000..0e40ec7
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerscriptsmodel.cpp
@@ -0,0 +1,335 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerscriptsmodel_p.h"
+#include "qscriptscriptdata_p.h"
+
+#include "private/qabstractitemmodel_p.h"
+
+#include <QtCore/qfileinfo.h>
+#include <QtCore/qpair.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerScriptsModelPrivate
+    : public QAbstractItemModelPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerScriptsModel)
+public:
+    struct Node {
+        Node(qint64 sid, const QScriptScriptData &dt)
+            : scriptId(sid), data(dt) {}
+
+        qint64 scriptId;
+        QScriptScriptData data;
+        QList<QPair<QString, int> > functionsInfo;
+        QSet<int> executableLineNumbers;
+    };
+
+    QScriptDebuggerScriptsModelPrivate();
+    ~QScriptDebuggerScriptsModelPrivate();
+
+    Node *findScriptNode(qint64 scriptId) const;
+
+    int nextNodeId;
+    QMap<int, Node*> nodes;
+};
+
+QScriptDebuggerScriptsModelPrivate::QScriptDebuggerScriptsModelPrivate()
+{
+    nextNodeId = 0;
+}
+
+QScriptDebuggerScriptsModelPrivate::~QScriptDebuggerScriptsModelPrivate()
+{
+    qDeleteAll(nodes);
+}
+
+QScriptDebuggerScriptsModelPrivate::Node *QScriptDebuggerScriptsModelPrivate::findScriptNode(qint64 scriptId) const
+{
+    QMap<int, Node*>::const_iterator it;
+    for (it = nodes.constBegin(); it != nodes.constEnd(); ++it) {
+        Node *n = it.value();
+        if (n->scriptId == scriptId)
+            return n;
+    }
+    return 0;
+}
+
+QScriptDebuggerScriptsModel::QScriptDebuggerScriptsModel(QObject *parent)
+    : QAbstractItemModel(*new QScriptDebuggerScriptsModelPrivate, parent)
+{
+}
+
+QScriptDebuggerScriptsModel::~QScriptDebuggerScriptsModel()
+{
+}
+
+void QScriptDebuggerScriptsModel::removeScript(qint64 id)
+{
+    Q_D(QScriptDebuggerScriptsModel);
+    QMap<int, QScriptDebuggerScriptsModelPrivate::Node*>::iterator it;
+    for (it = d->nodes.begin(); it != d->nodes.end(); ++it) {
+        QScriptDebuggerScriptsModelPrivate::Node *n = it.value();
+        if (n->scriptId == id) {
+            d->nodes.erase(it);
+            delete n;
+            break;
+        }
+    }
+}
+
+void QScriptDebuggerScriptsModel::addScript(qint64 sid, const QScriptScriptData &data)
+{
+    Q_D(QScriptDebuggerScriptsModel);
+    int id = d->nextNodeId;
+    ++d->nextNodeId;
+    d->nodes.insert(id, new QScriptDebuggerScriptsModelPrivate::Node(sid, data));
+}
+
+void QScriptDebuggerScriptsModel::addExtraScriptInfo(
+    qint64 sid, const QMap<QString, int> &functionsInfo,
+    const QSet<int> &executableLineNumbers)
+{
+    Q_D(QScriptDebuggerScriptsModel);
+    QScriptDebuggerScriptsModelPrivate::Node *node = d->findScriptNode(sid);
+    if (!node)
+        return;
+    QList<QPair<QString, int> > lst;
+    QMap<QString, int>::const_iterator it;
+    for (it = functionsInfo.constBegin(); it != functionsInfo.constEnd(); ++it)
+        lst.append(qMakePair(it.key(), it.value()));
+    node->functionsInfo = lst;
+    node->executableLineNumbers = executableLineNumbers;
+}
+
+void QScriptDebuggerScriptsModel::commit()
+{
+    layoutAboutToBeChanged();
+    layoutChanged();
+}
+
+QScriptScriptData QScriptDebuggerScriptsModel::scriptData(qint64 sid) const
+{
+    Q_D(const QScriptDebuggerScriptsModel);
+    QScriptDebuggerScriptsModelPrivate::Node *node = d->findScriptNode(sid);
+    if (!node)
+        return QScriptScriptData();
+    return node->data;
+}
+
+QScriptScriptMap QScriptDebuggerScriptsModel::scripts() const
+{
+    Q_D(const QScriptDebuggerScriptsModel);
+    QScriptScriptMap result;
+    QMap<int, QScriptDebuggerScriptsModelPrivate::Node*>::const_iterator it;
+    for (it = d->nodes.constBegin(); it != d->nodes.constEnd(); ++it) {
+        QScriptDebuggerScriptsModelPrivate::Node *n = it.value();
+        result.insert(n->scriptId, n->data);
+    }
+    return result;
+}
+
+qint64 QScriptDebuggerScriptsModel::resolveScript(const QString &fileName) const
+{
+    Q_D(const QScriptDebuggerScriptsModel);
+    QMap<int, QScriptDebuggerScriptsModelPrivate::Node*>::const_iterator it;
+    for (it = d->nodes.constBegin(); it != d->nodes.constEnd(); ++it) {
+        QScriptDebuggerScriptsModelPrivate::Node *n = it.value();
+        if (n->data.fileName() == fileName)
+            return n->scriptId;
+    }
+    return -1;
+}
+
+QSet<int> QScriptDebuggerScriptsModel::executableLineNumbers(qint64 scriptId) const
+{
+    Q_D(const QScriptDebuggerScriptsModel);
+    QScriptDebuggerScriptsModelPrivate::Node *node = d->findScriptNode(scriptId);
+    if (!node)
+        return QSet<int>();
+    return node->executableLineNumbers;
+}
+
+QModelIndex QScriptDebuggerScriptsModel::indexFromScriptId(qint64 sid) const
+{
+    Q_D(const QScriptDebuggerScriptsModel);
+    int row = 0;
+    QMap<int, QScriptDebuggerScriptsModelPrivate::Node*>::const_iterator it;
+    for (it = d->nodes.constBegin(); it != d->nodes.constEnd(); ++it, ++row) {
+        QScriptDebuggerScriptsModelPrivate::Node *n = it.value();
+        if (n->scriptId == sid)
+            return createIndex(row, 0, it.key() << 12);
+    }
+    return QModelIndex();
+}
+
+qint64 QScriptDebuggerScriptsModel::scriptIdFromIndex(const QModelIndex &index) const
+{
+    Q_D(const QScriptDebuggerScriptsModel);
+    if (!index.isValid())
+        return -1;
+    int id = index.internalId();
+    if (id & 1)
+        return -1;
+    QScriptDebuggerScriptsModelPrivate::Node *n = d->nodes.value(id >> 12);
+    if (!n)
+        return -1;
+    return n->scriptId;
+}
+
+QPair<QString, int> QScriptDebuggerScriptsModel::scriptFunctionInfoFromIndex(const QModelIndex &index) const
+{
+    Q_D(const QScriptDebuggerScriptsModel);
+    QPair<QString, int> result;
+    if (!index.isValid())
+        return result;
+    int id = index.internalId();
+    if (!(id & 1))
+        return result;
+    QScriptDebuggerScriptsModelPrivate::Node *node = d->nodes.value(id >> 12);
+    if (!node)
+        return result;
+    int functionIndex = (id >> 1) & ((1 << 11) - 1);
+    result = node->functionsInfo.at(functionIndex);
+    return result;
+}
+
+/*!
+  \reimp
+*/
+QModelIndex QScriptDebuggerScriptsModel::index(int row, int column, const QModelIndex &parent) const
+{
+    Q_D(const QScriptDebuggerScriptsModel);
+    if (!parent.isValid()) {
+        if ((row < 0) || (row >= d->nodes.size()))
+            return QModelIndex();
+        if (column != 0)
+            return QModelIndex();
+        return createIndex(row, column, d->nodes.keys().at(row) << 12);
+    }
+    int id = parent.internalId();
+    if (id & 1)
+        return QModelIndex();
+    return createIndex(row, column, id | (row << 1) | 1); 
+}
+
+/*!
+  \reimp
+*/
+QModelIndex QScriptDebuggerScriptsModel::parent(const QModelIndex &index) const
+{
+    Q_D(const QScriptDebuggerScriptsModel);
+    if (!index.isValid())
+        return QModelIndex();
+    int id = index.internalId();
+    if (!(id & 1))
+        return QModelIndex();
+    QScriptDebuggerScriptsModelPrivate::Node *n = d->nodes.value(id >> 12);
+    if (!n)
+        return QModelIndex();
+    return indexFromScriptId(n->scriptId);
+}
+
+/*!
+  \reimp
+*/
+int QScriptDebuggerScriptsModel::columnCount(const QModelIndex &) const
+{
+    return 1;
+}
+
+/*!
+  \reimp
+*/
+int QScriptDebuggerScriptsModel::rowCount(const QModelIndex &parent) const
+{
+    Q_D(const QScriptDebuggerScriptsModel);
+    if (!parent.isValid())
+        return d->nodes.size();
+    int id = parent.internalId();
+    if (id & 1)
+        return 0;
+    QScriptDebuggerScriptsModelPrivate::Node *n = d->nodes.value(id >> 12);
+    if (!n)
+        return 0;
+    return n->functionsInfo.size();
+}
+
+/*!
+  \reimp
+*/
+QVariant QScriptDebuggerScriptsModel::data(const QModelIndex &index, int role) const
+{
+    Q_D(const QScriptDebuggerScriptsModel);
+    if (!index.isValid())
+        return QVariant();
+    int id = index.internalId();
+    QScriptDebuggerScriptsModelPrivate::Node *node = d->nodes.value(id >> 12);
+    if (!node)
+        return QVariant();
+    if (!(id & 1)) {
+        if (role == Qt::DisplayRole) {
+            QString fn = node->data.fileName();
+            if (fn.isEmpty())
+                fn = QString::fromLatin1("<anonymous script, id=%0>").arg(node->scriptId);
+            return fn;
+        } else if (role == Qt::ToolTipRole) {
+            QString fn = node->data.fileName();
+            if (QFileInfo(fn).fileName() != fn)
+                return fn;
+        } else if (role == Qt::UserRole) {
+            return node->scriptId;
+        } else if (role == Qt::UserRole+1) {
+            return node->data.baseLineNumber();
+        } else if (role == Qt::UserRole+2) {
+            return node->data.contents();
+        }
+    } else {
+        int functionIndex = (id >> 1) & ((1 << 11) - 1);
+        if (role == Qt::DisplayRole)
+            return node->functionsInfo[functionIndex].first;
+    }
+    return QVariant();
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerscriptsmodel_p.h b/src/scripttools/debugging/qscriptdebuggerscriptsmodel_p.h
new file mode 100644
index 0000000..76852f7
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerscriptsmodel_p.h
@@ -0,0 +1,101 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERSCRIPTSMODEL_P_H
+#define QSCRIPTDEBUGGERSCRIPTSMODEL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qabstractitemmodel.h>
+#include <QtCore/qpair.h>
+
+#include "qscriptscriptdata_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerScriptsModelPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerScriptsModel
+    : public QAbstractItemModel
+{
+    Q_OBJECT
+public:
+    QScriptDebuggerScriptsModel(QObject *parent = 0);
+    ~QScriptDebuggerScriptsModel();
+
+    void removeScript(qint64 id);
+    void addScript(qint64 id, const QScriptScriptData &data);
+    void addExtraScriptInfo(
+        qint64 id, const QMap<QString, int> &functionsInfo,
+        const QSet<int> &executableLineNumbers);
+    void commit();
+
+    QScriptScriptData scriptData(qint64 id) const;
+    QScriptScriptMap scripts() const;
+    qint64 resolveScript(const QString &fileName) const;
+    QSet<int> executableLineNumbers(qint64 scriptId) const;
+
+    QModelIndex indexFromScriptId(qint64 id) const;
+    qint64 scriptIdFromIndex(const QModelIndex &index) const;
+    QPair<QString, int> scriptFunctionInfoFromIndex(const QModelIndex &index) const;
+
+    QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const;
+    QModelIndex parent(const QModelIndex &child) const;
+    int columnCount(const QModelIndex &parent = QModelIndex()) const;
+    int rowCount(const QModelIndex &parent = QModelIndex()) const;
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerScriptsModel)
+    Q_DISABLE_COPY(QScriptDebuggerScriptsModel)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerscriptswidget.cpp b/src/scripttools/debugging/qscriptdebuggerscriptswidget.cpp
new file mode 100644
index 0000000..41f8e60
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerscriptswidget.cpp
@@ -0,0 +1,154 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerscriptswidget_p.h"
+#include "qscriptdebuggerscriptswidgetinterface_p_p.h"
+#include "qscriptdebuggerscriptsmodel_p.h"
+
+#include <QtCore/qdebug.h>
+#include <QtGui/qheaderview.h>
+#include <QtGui/qtreeview.h>
+#include <QtGui/qboxlayout.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerScriptsWidgetPrivate
+    : public QScriptDebuggerScriptsWidgetInterfacePrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerScriptsWidget)
+public:
+    QScriptDebuggerScriptsWidgetPrivate();
+    ~QScriptDebuggerScriptsWidgetPrivate();
+
+    // private slots
+    void _q_onCurrentChanged(const QModelIndex &index);
+
+    QTreeView *view;
+    qint64 currentScriptId;
+};
+
+QScriptDebuggerScriptsWidgetPrivate::QScriptDebuggerScriptsWidgetPrivate()
+{
+    currentScriptId = -1;
+}
+
+QScriptDebuggerScriptsWidgetPrivate::~QScriptDebuggerScriptsWidgetPrivate()
+{
+}
+
+void QScriptDebuggerScriptsWidgetPrivate::_q_onCurrentChanged(const QModelIndex &index)
+{
+    Q_Q(QScriptDebuggerScriptsWidget);
+    if (!index.isValid())
+        return;
+    qint64 sid = q->scriptsModel()->scriptIdFromIndex(index);
+    if (sid != -1) {
+        if (currentScriptId != sid) {
+            currentScriptId = sid;
+            emit q->currentScriptChanged(sid);
+        }
+    } else {
+        qint64 sid = q->scriptsModel()->scriptIdFromIndex(index.parent());
+        Q_ASSERT(sid != -1);
+        currentScriptId = sid;
+        emit q->currentScriptChanged(sid);
+        QPair<QString, int> info = q->scriptsModel()->scriptFunctionInfoFromIndex(index);
+        emit q->scriptLocationSelected(info.second);
+    }
+}
+
+QScriptDebuggerScriptsWidget::QScriptDebuggerScriptsWidget(QWidget *parent)
+    : QScriptDebuggerScriptsWidgetInterface(*new QScriptDebuggerScriptsWidgetPrivate, parent, 0)
+{
+    Q_D(QScriptDebuggerScriptsWidget);
+    d->view = new QTreeView();
+    d->view->setEditTriggers(QAbstractItemView::NoEditTriggers);
+//    d->view->setAlternatingRowColors(true);
+//    d->view->setRootIsDecorated(false);
+    d->view->setSelectionBehavior(QAbstractItemView::SelectRows);
+    d->view->header()->hide();
+//    d->view->header()->setDefaultAlignment(Qt::AlignLeft);
+//    d->view->header()->setResizeMode(QHeaderView::ResizeToContents);
+
+    QVBoxLayout *vbox = new QVBoxLayout(this);
+    vbox->setMargin(0);
+    vbox->addWidget(d->view);
+}
+
+QScriptDebuggerScriptsWidget::~QScriptDebuggerScriptsWidget()
+{
+}
+
+/*!
+  \reimp
+*/
+QScriptDebuggerScriptsModel *QScriptDebuggerScriptsWidget::scriptsModel() const
+{
+    Q_D(const QScriptDebuggerScriptsWidget);
+    return qobject_cast<QScriptDebuggerScriptsModel*>(d->view->model());
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerScriptsWidget::setScriptsModel(QScriptDebuggerScriptsModel *model)
+{
+    Q_D(QScriptDebuggerScriptsWidget);
+    d->view->setModel(model);
+    QObject::connect(d->view->selectionModel(), SIGNAL(currentChanged(QModelIndex,QModelIndex)),
+                     this, SLOT(_q_onCurrentChanged(QModelIndex)));
+}
+
+qint64 QScriptDebuggerScriptsWidget::currentScriptId() const
+{
+    Q_D(const QScriptDebuggerScriptsWidget);
+    return scriptsModel()->scriptIdFromIndex(d->view->currentIndex());
+}
+
+void QScriptDebuggerScriptsWidget::setCurrentScript(qint64 id)
+{
+    Q_D(QScriptDebuggerScriptsWidget);
+    d->view->setCurrentIndex(scriptsModel()->indexFromScriptId(id));
+}
+
+QT_END_NAMESPACE
+
+#include "moc_qscriptdebuggerscriptswidget_p.cpp"
diff --git a/src/scripttools/debugging/qscriptdebuggerscriptswidget_p.h b/src/scripttools/debugging/qscriptdebuggerscriptswidget_p.h
new file mode 100644
index 0000000..09f0ae4
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerscriptswidget_p.h
@@ -0,0 +1,84 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERSCRIPTSWIDGET_P_H
+#define QSCRIPTDEBUGGERSCRIPTSWIDGET_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscriptdebuggerscriptswidgetinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerScriptsWidgetPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerScriptsWidget:
+    public QScriptDebuggerScriptsWidgetInterface
+{
+    Q_OBJECT
+public:
+    QScriptDebuggerScriptsWidget(QWidget *parent = 0);
+    ~QScriptDebuggerScriptsWidget();
+
+    QScriptDebuggerScriptsModel *scriptsModel() const;
+    void setScriptsModel(QScriptDebuggerScriptsModel *model);
+
+    qint64 currentScriptId() const;
+    void setCurrentScript(qint64 id);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerScriptsWidget)
+    Q_DISABLE_COPY(QScriptDebuggerScriptsWidget)
+
+    Q_PRIVATE_SLOT(d_func(), void _q_onCurrentChanged(const QModelIndex &))
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerscriptswidgetinterface.cpp b/src/scripttools/debugging/qscriptdebuggerscriptswidgetinterface.cpp
new file mode 100644
index 0000000..3a875ae
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerscriptswidgetinterface.cpp
@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerscriptswidgetinterface_p.h"
+#include "qscriptdebuggerscriptswidgetinterface_p_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QScriptDebuggerScriptsWidgetInterfacePrivate::QScriptDebuggerScriptsWidgetInterfacePrivate()
+{
+}
+
+QScriptDebuggerScriptsWidgetInterfacePrivate::~QScriptDebuggerScriptsWidgetInterfacePrivate()
+{
+}
+
+QScriptDebuggerScriptsWidgetInterface::~QScriptDebuggerScriptsWidgetInterface()
+{
+}
+
+QScriptDebuggerScriptsWidgetInterface::QScriptDebuggerScriptsWidgetInterface(
+    QScriptDebuggerScriptsWidgetInterfacePrivate &dd,
+    QWidget *parent, Qt::WindowFlags flags)
+    : QWidget(dd, parent, flags)
+{
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerscriptswidgetinterface_p.h b/src/scripttools/debugging/qscriptdebuggerscriptswidgetinterface_p.h
new file mode 100644
index 0000000..9c1f024
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerscriptswidgetinterface_p.h
@@ -0,0 +1,92 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERSCRIPTSWIDGETINTERFACE_P_H
+#define QSCRIPTDEBUGGERSCRIPTSWIDGETINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/qwidget.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerScriptsModel;
+
+class QScriptDebuggerScriptsWidgetInterfacePrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerScriptsWidgetInterface:
+    public QWidget
+{
+    Q_OBJECT
+public:
+    ~QScriptDebuggerScriptsWidgetInterface();
+
+    virtual QScriptDebuggerScriptsModel *scriptsModel() const = 0;
+    virtual void setScriptsModel(QScriptDebuggerScriptsModel *model) = 0;
+
+    virtual qint64 currentScriptId() const = 0;
+    virtual void setCurrentScript(qint64 id) = 0;
+
+Q_SIGNALS:
+    void currentScriptChanged(qint64 scriptId);
+    void scriptLocationSelected(int lineNumber);
+
+protected:
+    QScriptDebuggerScriptsWidgetInterface(
+        QScriptDebuggerScriptsWidgetInterfacePrivate &dd,
+        QWidget *parent, Qt::WindowFlags flags);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerScriptsWidgetInterface)
+    Q_DISABLE_COPY(QScriptDebuggerScriptsWidgetInterface)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerscriptswidgetinterface_p_p.h b/src/scripttools/debugging/qscriptdebuggerscriptswidgetinterface_p_p.h
new file mode 100644
index 0000000..d7eed23
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerscriptswidgetinterface_p_p.h
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERSCRIPTSWIDGETINTERFACE_P_P_H
+#define QSCRIPTDEBUGGERSCRIPTSWIDGETINTERFACE_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qwidget_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerScriptsWidgetInterface;
+class QScriptDebuggerScriptsWidgetInterfacePrivate
+    : public QWidgetPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerScriptsWidgetInterface)
+public:
+    QScriptDebuggerScriptsWidgetInterfacePrivate();
+    ~QScriptDebuggerScriptsWidgetInterfacePrivate();
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerstackmodel.cpp b/src/scripttools/debugging/qscriptdebuggerstackmodel.cpp
new file mode 100644
index 0000000..eb7e3f2
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerstackmodel.cpp
@@ -0,0 +1,170 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerstackmodel_p.h"
+
+#include "private/qabstractitemmodel_p.h"
+
+#include <QtScript/qscriptcontextinfo.h>
+#include <QtCore/qfileinfo.h>
+#include <QtCore/qcoreapplication.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerStackModelPrivate
+    : public QAbstractItemModelPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerStackModel)
+public:
+    QScriptDebuggerStackModelPrivate();
+    ~QScriptDebuggerStackModelPrivate();
+
+    QList<QScriptContextInfo> contextInfos;
+};
+
+QScriptDebuggerStackModelPrivate::QScriptDebuggerStackModelPrivate()
+{
+}
+
+QScriptDebuggerStackModelPrivate::~QScriptDebuggerStackModelPrivate()
+{
+}
+
+QScriptDebuggerStackModel::QScriptDebuggerStackModel(QObject *parent)
+    : QAbstractTableModel(*new QScriptDebuggerStackModelPrivate, parent)
+{
+}
+
+QScriptDebuggerStackModel::~QScriptDebuggerStackModel()
+{
+}
+
+QList<QScriptContextInfo> QScriptDebuggerStackModel::contextInfos() const
+{
+    Q_D(const QScriptDebuggerStackModel);
+    return d->contextInfos;
+}
+
+void QScriptDebuggerStackModel::setContextInfos(const QList<QScriptContextInfo> &infos)
+{
+    Q_D(QScriptDebuggerStackModel);
+    layoutAboutToBeChanged();
+    d->contextInfos = infos;
+    layoutChanged();
+}
+
+/*!
+  \reimp
+*/
+int QScriptDebuggerStackModel::columnCount(const QModelIndex &parent) const
+{
+    if (!parent.isValid())
+        return 3;
+    return 0;
+}
+
+/*!
+  \reimp
+*/
+int QScriptDebuggerStackModel::rowCount(const QModelIndex &parent) const
+{
+    Q_D(const QScriptDebuggerStackModel);
+    if (!parent.isValid())
+        return d->contextInfos.count();
+    return 0;
+}
+
+/*!
+  \reimp
+*/
+QVariant QScriptDebuggerStackModel::data(const QModelIndex &index, int role) const
+{
+    Q_D(const QScriptDebuggerStackModel);
+    if (!index.isValid())
+        return QVariant();
+    if (index.row() >= d->contextInfos.count())
+        return QVariant();
+    const QScriptContextInfo &info = d->contextInfos.at(index.row());
+    if (role == Qt::DisplayRole) {
+        if (index.column() == 0) {
+            return index.row();
+        } else if (index.column() == 1) {
+            QString name = info.functionName();
+            if (name.isEmpty())
+                name = QString::fromLatin1("<anonymous>");
+            return name;
+        } else if (index.column() == 2) {
+            QString fn = QFileInfo(info.fileName()).fileName();
+            if (fn.isEmpty()) {
+                if (info.functionType() == QScriptContextInfo::ScriptFunction)
+                    fn = QString::fromLatin1("<anonymous script, id=%0>").arg(info.scriptId());
+                else
+                    fn = QString::fromLatin1("<native>");
+
+            }
+            return QString::fromLatin1("%0:%1").arg(fn).arg(info.lineNumber());
+        }
+    } else if (role == Qt::ToolTipRole) {
+        if (QFileInfo(info.fileName()).fileName() != info.fileName())
+            return info.fileName();
+    }
+    return QVariant();
+}
+
+/*!
+  \reimp
+*/
+QVariant QScriptDebuggerStackModel::headerData(int section, Qt::Orientation orient, int role) const
+{
+    if (orient != Qt::Horizontal)
+        return QVariant();
+    if (role == Qt::DisplayRole) {
+        if (section == 0)
+            return QCoreApplication::translate("QScriptDebuggerStackModel", "Level");
+        else if (section == 1)
+            return QCoreApplication::translate("QScriptDebuggerStackModel", "Name");
+        else if (section == 2)
+            return QCoreApplication::translate("QScriptDebuggerStackModel", "Location");
+    }
+    return QVariant();
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerstackmodel_p.h b/src/scripttools/debugging/qscriptdebuggerstackmodel_p.h
new file mode 100644
index 0000000..0ede406
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerstackmodel_p.h
@@ -0,0 +1,87 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERSTACKMODEL_P_H
+#define QSCRIPTDEBUGGERSTACKMODEL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qabstractitemmodel.h>
+
+#include <QtCore/qlist.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptContextInfo;
+
+class QScriptDebuggerStackModelPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerStackModel
+    : public QAbstractTableModel
+{
+public:
+    QScriptDebuggerStackModel(QObject *parent = 0);
+    ~QScriptDebuggerStackModel();
+
+    QList<QScriptContextInfo> contextInfos() const;
+    void setContextInfos(const QList<QScriptContextInfo> &infos);
+
+    int columnCount(const QModelIndex &parent) const;
+    int rowCount(const QModelIndex &parent) const;
+    QVariant data(const QModelIndex &index, int role) const;
+    QVariant headerData(int section, Qt::Orientation, int role) const;
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerStackModel)
+    Q_DISABLE_COPY(QScriptDebuggerStackModel)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerstackwidget.cpp b/src/scripttools/debugging/qscriptdebuggerstackwidget.cpp
new file mode 100644
index 0000000..4fdf6cd
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerstackwidget.cpp
@@ -0,0 +1,142 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerstackwidget_p.h"
+#include "qscriptdebuggerstackwidgetinterface_p_p.h"
+
+#include <QtCore/qdebug.h>
+#include <QtGui/qheaderview.h>
+#include <QtGui/qtreeview.h>
+#include <QtGui/qboxlayout.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerStackWidgetPrivate
+    : public QScriptDebuggerStackWidgetInterfacePrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerStackWidget)
+public:
+    QScriptDebuggerStackWidgetPrivate();
+    ~QScriptDebuggerStackWidgetPrivate();
+
+    // private slots
+    void _q_onCurrentChanged(const QModelIndex &index);
+
+    QTreeView *view;
+};
+
+QScriptDebuggerStackWidgetPrivate::QScriptDebuggerStackWidgetPrivate()
+{
+}
+
+QScriptDebuggerStackWidgetPrivate::~QScriptDebuggerStackWidgetPrivate()
+{
+}
+
+void QScriptDebuggerStackWidgetPrivate::_q_onCurrentChanged(const QModelIndex &index)
+{
+    Q_Q(QScriptDebuggerStackWidget);
+    emit q->currentFrameChanged(index.row());
+}
+
+QScriptDebuggerStackWidget::QScriptDebuggerStackWidget(QWidget *parent)
+    : QScriptDebuggerStackWidgetInterface(*new QScriptDebuggerStackWidgetPrivate, parent, 0)
+{
+    Q_D(QScriptDebuggerStackWidget);
+    d->view = new QTreeView();
+    d->view->setEditTriggers(QAbstractItemView::NoEditTriggers);
+    d->view->setAlternatingRowColors(true);
+    d->view->setRootIsDecorated(false);
+    d->view->setSelectionBehavior(QAbstractItemView::SelectRows);
+    d->view->header()->setDefaultAlignment(Qt::AlignLeft);
+//    d->view->header()->setResizeMode(QHeaderView::ResizeToContents);
+
+    QVBoxLayout *vbox = new QVBoxLayout(this);
+    vbox->setMargin(0);
+    vbox->addWidget(d->view);
+}
+
+QScriptDebuggerStackWidget::~QScriptDebuggerStackWidget()
+{
+}
+
+/*!
+  \reimp
+*/
+QAbstractItemModel *QScriptDebuggerStackWidget::stackModel() const
+{
+    Q_D(const QScriptDebuggerStackWidget);
+    return d->view->model();
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerStackWidget::setStackModel(QAbstractItemModel *model)
+{
+    Q_D(QScriptDebuggerStackWidget);
+    d->view->setModel(model);
+    QObject::connect(d->view->selectionModel(), SIGNAL(currentChanged(QModelIndex,QModelIndex)),
+                     this, SLOT(_q_onCurrentChanged(QModelIndex)));
+    d->view->header()->resizeSection(0, 50);
+}
+
+/*!
+  \reimp
+*/
+int QScriptDebuggerStackWidget::currentFrameIndex() const
+{
+    Q_D(const QScriptDebuggerStackWidget);
+    return d->view->currentIndex().row();
+}
+
+/*!
+  \reimp
+*/
+void QScriptDebuggerStackWidget::setCurrentFrameIndex(int frameIndex)
+{
+    Q_D(QScriptDebuggerStackWidget);
+    d->view->setCurrentIndex(d->view->model()->index(frameIndex, 0));
+}
+
+QT_END_NAMESPACE
+
+#include "moc_qscriptdebuggerstackwidget_p.cpp"
diff --git a/src/scripttools/debugging/qscriptdebuggerstackwidget_p.h b/src/scripttools/debugging/qscriptdebuggerstackwidget_p.h
new file mode 100644
index 0000000..ca1387a
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerstackwidget_p.h
@@ -0,0 +1,84 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERSTACKWIDGET_P_H
+#define QSCRIPTDEBUGGERSTACKWIDGET_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscriptdebuggerstackwidgetinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerStackWidgetPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerStackWidget:
+    public QScriptDebuggerStackWidgetInterface
+{
+    Q_OBJECT
+public:
+    QScriptDebuggerStackWidget(QWidget *parent = 0);
+    ~QScriptDebuggerStackWidget();
+
+    QAbstractItemModel *stackModel() const;
+    void setStackModel(QAbstractItemModel *model);
+
+    int currentFrameIndex() const;
+    void setCurrentFrameIndex(int frameIndex);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerStackWidget)
+    Q_DISABLE_COPY(QScriptDebuggerStackWidget)
+
+    Q_PRIVATE_SLOT(d_func(), void _q_onCurrentChanged(const QModelIndex &))
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerstackwidgetinterface.cpp b/src/scripttools/debugging/qscriptdebuggerstackwidgetinterface.cpp
new file mode 100644
index 0000000..c09fe3f
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerstackwidgetinterface.cpp
@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerstackwidgetinterface_p.h"
+#include "qscriptdebuggerstackwidgetinterface_p_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QScriptDebuggerStackWidgetInterfacePrivate::QScriptDebuggerStackWidgetInterfacePrivate()
+{
+}
+
+QScriptDebuggerStackWidgetInterfacePrivate::~QScriptDebuggerStackWidgetInterfacePrivate()
+{
+}
+
+QScriptDebuggerStackWidgetInterface::~QScriptDebuggerStackWidgetInterface()
+{
+}
+
+QScriptDebuggerStackWidgetInterface::QScriptDebuggerStackWidgetInterface(
+    QScriptDebuggerStackWidgetInterfacePrivate &dd,
+    QWidget *parent, Qt::WindowFlags flags)
+    : QWidget(dd, parent, flags)
+{
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerstackwidgetinterface_p.h b/src/scripttools/debugging/qscriptdebuggerstackwidgetinterface_p.h
new file mode 100644
index 0000000..c82076b
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerstackwidgetinterface_p.h
@@ -0,0 +1,91 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERSTACKWIDGETINTERFACE_P_H
+#define QSCRIPTDEBUGGERSTACKWIDGETINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/qwidget.h>
+
+QT_BEGIN_NAMESPACE
+
+class QAbstractItemModel;
+
+class QScriptDebuggerStackWidgetInterfacePrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerStackWidgetInterface:
+    public QWidget
+{
+    Q_OBJECT
+public:
+    ~QScriptDebuggerStackWidgetInterface();
+
+    virtual QAbstractItemModel *stackModel() const = 0;
+    virtual void setStackModel(QAbstractItemModel *model) = 0;
+
+    virtual int currentFrameIndex() const = 0;
+    virtual void setCurrentFrameIndex(int frameIndex) = 0;
+
+Q_SIGNALS:
+    void currentFrameChanged(int newFrameIndex);
+
+protected:
+    QScriptDebuggerStackWidgetInterface(
+        QScriptDebuggerStackWidgetInterfacePrivate &dd,
+        QWidget *parent, Qt::WindowFlags flags);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebuggerStackWidgetInterface)
+    Q_DISABLE_COPY(QScriptDebuggerStackWidgetInterface)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerstackwidgetinterface_p_p.h b/src/scripttools/debugging/qscriptdebuggerstackwidgetinterface_p_p.h
new file mode 100644
index 0000000..8fc9916
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerstackwidgetinterface_p_p.h
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERSTACKWIDGETINTERFACE_P_P_H
+#define QSCRIPTDEBUGGERSTACKWIDGETINTERFACE_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qwidget_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebuggerStackWidgetInterface;
+class QScriptDebuggerStackWidgetInterfacePrivate
+    : public QWidgetPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebuggerStackWidgetInterface)
+public:
+    QScriptDebuggerStackWidgetInterfacePrivate();
+    ~QScriptDebuggerStackWidgetInterfacePrivate();
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerstandardwidgetfactory.cpp b/src/scripttools/debugging/qscriptdebuggerstandardwidgetfactory.cpp
new file mode 100644
index 0000000..9cf3215
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerstandardwidgetfactory.cpp
@@ -0,0 +1,109 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggerstandardwidgetfactory_p.h"
+#include "qscriptdebuggerconsolewidget_p.h"
+#include "qscriptdebuggerstackwidget_p.h"
+#include "qscriptdebuggerscriptswidget_p.h"
+#include "qscriptdebuggerlocalswidget_p.h"
+#include "qscriptdebuggercodewidget_p.h"
+#include "qscriptdebuggercodefinderwidget_p.h"
+#include "qscriptbreakpointswidget_p.h"
+#include "qscriptdebugoutputwidget_p.h"
+#include "qscripterrorlogwidget_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QScriptDebuggerStandardWidgetFactory::QScriptDebuggerStandardWidgetFactory(QObject *parent)
+    : QObject(parent)
+{
+}
+
+QScriptDebuggerStandardWidgetFactory::~QScriptDebuggerStandardWidgetFactory()
+{
+}
+
+QScriptDebugOutputWidgetInterface *QScriptDebuggerStandardWidgetFactory::createDebugOutputWidget()
+{
+    return new QScriptDebugOutputWidget();
+}
+
+QScriptDebuggerConsoleWidgetInterface *QScriptDebuggerStandardWidgetFactory::createConsoleWidget()
+{
+    return new QScriptDebuggerConsoleWidget();
+}
+
+QScriptErrorLogWidgetInterface *QScriptDebuggerStandardWidgetFactory::createErrorLogWidget()
+{
+    return new QScriptErrorLogWidget();
+}
+
+QScriptDebuggerCodeFinderWidgetInterface *QScriptDebuggerStandardWidgetFactory::createCodeFinderWidget()
+{
+    return new QScriptDebuggerCodeFinderWidget();
+}
+
+QScriptDebuggerStackWidgetInterface *QScriptDebuggerStandardWidgetFactory::createStackWidget()
+{
+    return new QScriptDebuggerStackWidget();
+}
+
+QScriptDebuggerScriptsWidgetInterface *QScriptDebuggerStandardWidgetFactory::createScriptsWidget()
+{
+    return new QScriptDebuggerScriptsWidget();
+}
+
+QScriptDebuggerLocalsWidgetInterface *QScriptDebuggerStandardWidgetFactory::createLocalsWidget()
+{
+    return new QScriptDebuggerLocalsWidget();
+}
+
+QScriptDebuggerCodeWidgetInterface *QScriptDebuggerStandardWidgetFactory::createCodeWidget()
+{
+    return new QScriptDebuggerCodeWidget();
+}
+
+QScriptBreakpointsWidgetInterface *QScriptDebuggerStandardWidgetFactory::createBreakpointsWidget()
+{
+    return new QScriptBreakpointsWidget();
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggerstandardwidgetfactory_p.h b/src/scripttools/debugging/qscriptdebuggerstandardwidgetfactory_p.h
new file mode 100644
index 0000000..ed0b715
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerstandardwidgetfactory_p.h
@@ -0,0 +1,85 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERSTANDARDWIDGETFACTORY_P_H
+#define QSCRIPTDEBUGGERSTANDARDWIDGETFACTORY_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobject.h>
+
+#include "qscriptdebuggerwidgetfactoryinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class Q_AUTOTEST_EXPORT QScriptDebuggerStandardWidgetFactory
+    : public QObject, public QScriptDebuggerWidgetFactoryInterface
+{
+public:
+    QScriptDebuggerStandardWidgetFactory(QObject *parent = 0);
+    virtual ~QScriptDebuggerStandardWidgetFactory();
+
+    QScriptDebugOutputWidgetInterface *createDebugOutputWidget();
+    QScriptDebuggerConsoleWidgetInterface *createConsoleWidget();
+    QScriptErrorLogWidgetInterface *createErrorLogWidget();
+    QScriptDebuggerCodeFinderWidgetInterface *createCodeFinderWidget();
+    QScriptDebuggerStackWidgetInterface *createStackWidget();
+    QScriptDebuggerScriptsWidgetInterface *createScriptsWidget();
+    QScriptDebuggerLocalsWidgetInterface *createLocalsWidget();
+    QScriptDebuggerCodeWidgetInterface *createCodeWidget();
+    QScriptBreakpointsWidgetInterface *createBreakpointsWidget();
+
+private:
+    Q_DISABLE_COPY(QScriptDebuggerStandardWidgetFactory)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggervalue.cpp b/src/scripttools/debugging/qscriptdebuggervalue.cpp
new file mode 100644
index 0000000..3e84e6f
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggervalue.cpp
@@ -0,0 +1,407 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggervalue_p.h"
+
+#include <QtScript/qscriptvalue.h>
+#include <QtScript/qscriptengine.h>
+#include <QtCore/qdatastream.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \since 4.5
+  \class QScriptDebuggerValue
+  \internal
+
+  \brief The QScriptDebuggerValue class represents a script value.
+*/
+
+class QScriptDebuggerValuePrivate
+{
+public:
+    QScriptDebuggerValuePrivate();
+    ~QScriptDebuggerValuePrivate();
+
+    QScriptDebuggerValue::ValueType type;
+    union {
+        bool booleanValue;
+        QString *stringValue;
+        double numberValue;
+        qint64 objectId;
+    };
+
+    QBasicAtomicInt ref;
+};
+
+QScriptDebuggerValuePrivate::QScriptDebuggerValuePrivate()
+    : type(QScriptDebuggerValue::NoValue)
+{
+    ref = 0;
+}
+
+QScriptDebuggerValuePrivate::~QScriptDebuggerValuePrivate()
+{
+    if (type == QScriptDebuggerValue::StringValue)
+        delete stringValue;
+}
+
+QScriptDebuggerValue::QScriptDebuggerValue()
+    : d_ptr(0)
+{
+}
+
+QScriptDebuggerValue::QScriptDebuggerValue(const QScriptValue &value)
+    : d_ptr(0)
+{
+    if (value.isValid()) {
+        d_ptr.reset(new QScriptDebuggerValuePrivate);
+        if (value.isUndefined())
+            d_ptr->type = UndefinedValue;
+        else if (value.isNull())
+            d_ptr->type = NullValue;
+        else if (value.isNumber()) {
+            d_ptr->type = NumberValue;
+            d_ptr->numberValue = value.toNumber();
+        } else if (value.isBoolean()) {
+            d_ptr->type = BooleanValue;
+            d_ptr->booleanValue = value.toBoolean();
+        } else if (value.isString()) {
+            d_ptr->type = StringValue;
+            d_ptr->stringValue = new QString(value.toString());
+        } else {
+            Q_ASSERT(value.isObject());
+            d_ptr->type = ObjectValue;
+            d_ptr->objectId = value.objectId();
+        }
+        d_ptr->ref.ref();
+    }
+}
+
+QScriptDebuggerValue::QScriptDebuggerValue(double value)
+    : d_ptr(new QScriptDebuggerValuePrivate)
+{
+    d_ptr->type = NumberValue;
+    d_ptr->numberValue = value;
+    d_ptr->ref.ref();
+}
+
+QScriptDebuggerValue::QScriptDebuggerValue(bool value)
+    : d_ptr(new QScriptDebuggerValuePrivate)
+{
+    d_ptr->type = BooleanValue;
+    d_ptr->booleanValue = value;
+    d_ptr->ref.ref();
+}
+
+QScriptDebuggerValue::QScriptDebuggerValue(const QString &value)
+    : d_ptr(new QScriptDebuggerValuePrivate)
+{
+    d_ptr->type = StringValue;
+    d_ptr->stringValue = new QString(value);
+    d_ptr->ref.ref();
+}
+
+QScriptDebuggerValue::QScriptDebuggerValue(qint64 objectId)
+    : d_ptr(new QScriptDebuggerValuePrivate)
+{
+    d_ptr->type = ObjectValue;
+    d_ptr->objectId = objectId;
+    d_ptr->ref.ref();
+}
+
+QScriptDebuggerValue::QScriptDebuggerValue(ValueType type)
+    : d_ptr(new QScriptDebuggerValuePrivate)
+{
+    d_ptr->type = type;
+    d_ptr->ref.ref();
+}
+
+QScriptDebuggerValue::QScriptDebuggerValue(const QScriptDebuggerValue &other)
+    : d_ptr(other.d_ptr.data())
+{
+    if (d_ptr)
+        d_ptr->ref.ref();
+}
+
+QScriptDebuggerValue::~QScriptDebuggerValue()
+{
+}
+
+QScriptDebuggerValue &QScriptDebuggerValue::operator=(const QScriptDebuggerValue &other)
+{
+    d_ptr.assign(other.d_ptr.data());
+    return *this;
+}
+
+/*!
+  Returns the type of this value.
+*/
+QScriptDebuggerValue::ValueType QScriptDebuggerValue::type() const
+{
+    Q_D(const QScriptDebuggerValue);
+    if (!d)
+        return NoValue;
+    return d->type;
+}
+
+/*!
+  Returns this value as a number.
+*/
+double QScriptDebuggerValue::numberValue() const
+{
+    Q_D(const QScriptDebuggerValue);
+    if (!d)
+        return 0;
+    Q_ASSERT(d->type == NumberValue);
+    return d->numberValue;
+}
+
+/*!
+  Returns this value as a boolean.
+*/
+bool QScriptDebuggerValue::booleanValue() const
+{
+    Q_D(const QScriptDebuggerValue);
+    if (!d)
+        return false;
+    Q_ASSERT(d->type == BooleanValue);
+    return d->booleanValue;
+}
+
+/*!
+  Returns this value as a string.
+*/
+QString QScriptDebuggerValue::stringValue() const
+{
+    Q_D(const QScriptDebuggerValue);
+    if (!d)
+        return QString();
+    Q_ASSERT(d->type == StringValue);
+    return *d->stringValue;
+}
+
+/*!
+  Returns this value as an object ID.
+*/
+qint64 QScriptDebuggerValue::objectId() const
+{
+    Q_D(const QScriptDebuggerValue);
+    if (!d)
+        return -1;
+    Q_ASSERT(d->type == ObjectValue);
+    return d->objectId;
+}
+
+/*!
+  Converts this QScriptDebuggerValue to a QScriptValue in the
+  given \a engine and returns the resulting value.
+*/
+QScriptValue QScriptDebuggerValue::toScriptValue(QScriptEngine *engine) const
+{
+    Q_D(const QScriptDebuggerValue);
+    if (!d)
+        return QScriptValue();
+    switch (d->type) {
+    case NoValue:
+        return QScriptValue();
+    case UndefinedValue:
+        return engine->undefinedValue();
+    case NullValue:
+        return engine->nullValue();
+    case BooleanValue:
+        return QScriptValue(engine, d->booleanValue);
+    case StringValue:
+        return QScriptValue(engine, *d->stringValue);
+    case NumberValue:
+        return QScriptValue(engine, d->numberValue);
+    case ObjectValue:
+        return engine->objectById(d->objectId);
+    }
+    return QScriptValue();
+}
+
+/*!
+  Returns a string representation of this value.
+*/
+QString QScriptDebuggerValue::toString() const
+{
+    Q_D(const QScriptDebuggerValue);
+    if (!d)
+        return QString();
+    switch (d->type) {
+    case NoValue:
+        return QString();
+    case UndefinedValue:
+        return QString::fromLatin1("undefined");
+    case NullValue:
+        return QString::fromLatin1("null");
+    case BooleanValue:
+        if (d->booleanValue)
+            return QString::fromLatin1("true");
+        else
+            return QString::fromLatin1("false");
+    case StringValue:
+        return *d->stringValue;
+    case NumberValue:
+        return QString::number(d->numberValue); // ### qScriptNumberToString()
+    case ObjectValue:
+        return QString::fromLatin1("[object Object]");
+    }
+    return QString();
+}
+
+/*!
+  Returns true if this QScriptDebuggerValue is equal to the \a other
+  value, otherwise returns false.
+*/
+bool QScriptDebuggerValue::operator==(const QScriptDebuggerValue &other) const
+{
+    Q_D(const QScriptDebuggerValue);
+    const QScriptDebuggerValuePrivate *od = other.d_func();
+    if (d == od)
+        return true;
+    if (!d || !od)
+        return false;
+    if (d->type != od->type)
+        return false;
+    switch (d->type) {
+    case NoValue:
+    case UndefinedValue:
+    case NullValue:
+        return true;
+    case BooleanValue:
+        return d->booleanValue == od->booleanValue;
+    case StringValue:
+        return *d->stringValue == *od->stringValue;
+    case NumberValue:
+        return d->numberValue == od->numberValue;
+    case ObjectValue:
+        return d->objectId == od->objectId;
+    }
+    return false;
+}
+
+/*!
+  Returns true if this QScriptDebuggerValue is not equal to the \a
+  other value, otherwise returns false.
+*/
+bool QScriptDebuggerValue::operator!=(const QScriptDebuggerValue &other) const
+{
+    return !(*this == other);
+}
+
+/*!
+  \fn QDataStream &operator<<(QDataStream &stream, const QScriptDebuggerValue &value)
+  \relates QScriptDebuggerValue
+
+  Writes the given \a value to the specified \a stream.
+*/
+QDataStream &operator<<(QDataStream &out, const QScriptDebuggerValue &value)
+{
+    out << (quint32)value.type();
+    switch (value.type()) {
+    case QScriptDebuggerValue::NoValue:
+    case QScriptDebuggerValue::UndefinedValue:
+    case QScriptDebuggerValue::NullValue:
+        break;
+    case QScriptDebuggerValue::BooleanValue:
+        out << value.booleanValue();
+        break;
+    case QScriptDebuggerValue::StringValue:
+        out << value.stringValue();
+        break;
+    case QScriptDebuggerValue::NumberValue:
+        out << value.numberValue();
+        break;
+    case QScriptDebuggerValue::ObjectValue:
+        out << value.objectId();
+        break;
+    }
+    return out;
+}
+
+/*!
+  \fn QDataStream &operator>>(QDataStream &stream, QScriptDebuggerValue &value)
+  \relates QScriptDebuggerValue
+
+  Reads a QScriptDebuggerValue from the specified \a stream into the
+  given \a value.
+*/
+QDataStream &operator>>(QDataStream &in, QScriptDebuggerValue &value)
+{
+    quint32 type;
+    in >> type;
+    switch (QScriptDebuggerValue::ValueType(type)) {
+    case QScriptDebuggerValue::UndefinedValue:
+    case QScriptDebuggerValue::NullValue:
+        value = QScriptDebuggerValue(QScriptDebuggerValue::ValueType(type));
+        break;
+    case QScriptDebuggerValue::BooleanValue: {
+        bool b;
+        in >> b;
+        value = QScriptDebuggerValue(b);
+    }   break;
+    case QScriptDebuggerValue::StringValue: {
+        QString s;
+        in >> s;
+        value = QScriptDebuggerValue(s);
+    }   break;
+    case QScriptDebuggerValue::NumberValue: {
+        double d;
+        in >> d;
+        value = QScriptDebuggerValue(d);
+    }   break;
+    case QScriptDebuggerValue::ObjectValue: {
+        qint64 id;
+        in >> id;
+        value = QScriptDebuggerValue(id);
+    }   break;
+    case QScriptDebuggerValue::NoValue:
+    default:
+        value = QScriptDebuggerValue();
+        break;
+    }
+    return in;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggervalue_p.h b/src/scripttools/debugging/qscriptdebuggervalue_p.h
new file mode 100644
index 0000000..bb3b7c1
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggervalue_p.h
@@ -0,0 +1,118 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERVALUE_P_H
+#define QSCRIPTDEBUGGERVALUE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+#include <QtCore/private/qscopedpointer_p.h>
+#include <QtCore/qlist.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptValue;
+class QScriptEngine;
+class QDataStream;
+
+class QScriptDebuggerValuePrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerValue
+{
+public:
+    enum ValueType {
+        NoValue,
+        UndefinedValue,
+        NullValue,
+        BooleanValue,
+        StringValue,
+        NumberValue,
+        ObjectValue
+    };
+
+    QScriptDebuggerValue();
+    QScriptDebuggerValue(const QScriptValue &value);
+    QScriptDebuggerValue(double value);
+    QScriptDebuggerValue(bool value);
+    QScriptDebuggerValue(const QString &value);
+    QScriptDebuggerValue(qint64 objectId);
+    QScriptDebuggerValue(ValueType type);
+    QScriptDebuggerValue(const QScriptDebuggerValue &other);
+    ~QScriptDebuggerValue();
+
+    QScriptDebuggerValue &operator=(const QScriptDebuggerValue &other);
+
+    ValueType type() const;
+
+    double numberValue() const;
+    bool booleanValue() const;
+    QString stringValue() const;
+    qint64 objectId() const;
+
+    QScriptValue toScriptValue(QScriptEngine *engine) const;
+    QString toString() const;
+
+    bool operator==(const QScriptDebuggerValue &other) const;
+    bool operator!=(const QScriptDebuggerValue &other) const;
+
+private:
+    QScopedSharedPointer<QScriptDebuggerValuePrivate> d_ptr;
+
+    Q_DECLARE_PRIVATE(QScriptDebuggerValue)
+};
+
+typedef QList<QScriptDebuggerValue> QScriptDebuggerValueList;
+
+Q_AUTOTEST_EXPORT QDataStream &operator<<(QDataStream &, const QScriptDebuggerValue &);
+Q_AUTOTEST_EXPORT QDataStream &operator>>(QDataStream &, QScriptDebuggerValue &);
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggervalueproperty.cpp b/src/scripttools/debugging/qscriptdebuggervalueproperty.cpp
new file mode 100644
index 0000000..c9059f8
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggervalueproperty.cpp
@@ -0,0 +1,235 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebuggervalueproperty_p.h"
+#include "qscriptdebuggervalue_p.h"
+#include "qscriptdebuggerobjectsnapshotdelta_p.h"
+
+#include <QtCore/qatomic.h>
+#include <QtCore/qdatastream.h>
+#include <QtCore/qstring.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \internal
+  \class QScriptDebuggerValueProperty
+*/
+
+class QScriptDebuggerValuePropertyPrivate
+{
+public:
+    QScriptDebuggerValuePropertyPrivate();
+    ~QScriptDebuggerValuePropertyPrivate();
+
+    QString name;
+    QScriptDebuggerValue value;
+    QString valueAsString;
+    QScriptValue::PropertyFlags flags;
+
+    QBasicAtomicInt ref;
+};
+
+QScriptDebuggerValuePropertyPrivate::QScriptDebuggerValuePropertyPrivate()
+{
+    ref = 0;
+}
+
+QScriptDebuggerValuePropertyPrivate::~QScriptDebuggerValuePropertyPrivate()
+{
+}
+
+/*!
+  Constructs an invalid QScriptDebuggerValueProperty.
+*/
+QScriptDebuggerValueProperty::QScriptDebuggerValueProperty()
+    : d_ptr(0)
+{
+}
+
+/*!
+  Constructs a QScriptDebuggerValueProperty with the given \a name,
+  \a value and \a flags.
+*/
+QScriptDebuggerValueProperty::QScriptDebuggerValueProperty(const QString &name,
+                                                           const QScriptDebuggerValue &value,
+                                                           const QString &valueAsString,
+                                                           QScriptValue::PropertyFlags flags)
+    : d_ptr(new QScriptDebuggerValuePropertyPrivate)
+{
+    d_ptr->name = name;
+    d_ptr->value = value;
+    d_ptr->valueAsString = valueAsString;
+    d_ptr->flags = flags;
+    d_ptr->ref.ref();
+}
+
+/*!
+  Constructs a QScriptDebuggerValueProperty that is a copy of the \a other property.
+*/
+QScriptDebuggerValueProperty::QScriptDebuggerValueProperty(const QScriptDebuggerValueProperty &other)
+    : d_ptr(other.d_ptr.data())
+{
+    if (d_ptr)
+        d_ptr->ref.ref();
+}
+
+/*!
+  Destroys this QScriptDebuggerValueProperty.
+*/
+QScriptDebuggerValueProperty::~QScriptDebuggerValueProperty()
+{
+}
+
+/*!
+  Assigns the \a other property to this QScriptDebuggerValueProperty.
+*/
+QScriptDebuggerValueProperty &QScriptDebuggerValueProperty::operator=(const QScriptDebuggerValueProperty &other)
+{
+    d_ptr.assign(other.d_ptr.data());
+    return *this;
+}
+
+/*!
+  Returns the name of this QScriptDebuggerValueProperty.
+*/
+QString QScriptDebuggerValueProperty::name() const
+{
+    Q_D(const QScriptDebuggerValueProperty);
+    if (!d)
+        return QString();
+    return d->name;
+}
+
+/*!
+  Returns the value of this QScriptDebuggerValueProperty.
+*/
+QScriptDebuggerValue QScriptDebuggerValueProperty::value() const
+{
+    Q_D(const QScriptDebuggerValueProperty);
+    if (!d)
+        return QScriptDebuggerValue();
+    return d->value;
+}
+
+QString QScriptDebuggerValueProperty::valueAsString() const
+{
+    Q_D(const QScriptDebuggerValueProperty);
+    if (!d)
+        return QString();
+    return d->valueAsString;
+}
+
+/*!
+  Returns the flags of this QScriptDebuggerValueProperty.
+*/
+QScriptValue::PropertyFlags QScriptDebuggerValueProperty::flags() const
+{
+    Q_D(const QScriptDebuggerValueProperty);
+    if (!d)
+        return 0;
+    return d->flags;
+}
+
+/*!
+  Returns true if this QScriptDebuggerValueProperty is valid, otherwise
+  returns false.
+*/
+bool QScriptDebuggerValueProperty::isValid() const
+{
+    Q_D(const QScriptDebuggerValueProperty);
+    return (d != 0);
+}
+
+/*!
+  \fn QDataStream &operator<<(QDataStream &stream, const QScriptDebuggerValueProperty &property)
+  \relates QScriptDebuggerValueProperty
+
+  Writes the given \a property to the specified \a stream.
+*/
+QDataStream &operator<<(QDataStream &out, const QScriptDebuggerValueProperty &property)
+{
+    out << property.name();
+    out << property.value();
+    out << property.valueAsString();
+    out << (quint32)property.flags();
+    return out;
+}
+
+/*!
+  \fn QDataStream &operator>>(QDataStream &stream, QScriptDebuggerValueProperty &property)
+  \relates QScriptDebuggerValueProperty
+
+  Reads a QScriptDebuggerValueProperty from the specified \a stream into the
+  given \a property.
+*/
+QDataStream &operator>>(QDataStream &in, QScriptDebuggerValueProperty &property)
+{
+    QString name;
+    QScriptDebuggerValue value;
+    QString valueAsString;
+    quint32 flags;
+    in >> name;
+    in >> value;
+    in >> valueAsString;
+    in >> flags;
+    property = QScriptDebuggerValueProperty(
+        name, value, valueAsString, QScriptValue::PropertyFlags(flags));
+    return in;
+}
+
+QDataStream &operator<<(QDataStream &out, const QScriptDebuggerObjectSnapshotDelta &delta)
+{
+    out << delta.removedProperties;
+    out << delta.changedProperties;
+    out << delta.addedProperties;
+    return out;
+}
+
+QDataStream &operator>>(QDataStream &in, QScriptDebuggerObjectSnapshotDelta &delta)
+{
+    in >> delta.removedProperties;
+    in >> delta.changedProperties;
+    in >> delta.addedProperties;
+    return in;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebuggervalueproperty_p.h b/src/scripttools/debugging/qscriptdebuggervalueproperty_p.h
new file mode 100644
index 0000000..4052159
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggervalueproperty_p.h
@@ -0,0 +1,101 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERVALUEPROPERTY_P_H
+#define QSCRIPTDEBUGGERVALUEPROPERTY_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+#include <QtCore/qlist.h>
+#include <QtCore/private/qscopedpointer_p.h>
+#include <QtScript/qscriptvalue.h>
+
+QT_BEGIN_NAMESPACE
+
+class QDataStream;
+class QString;
+class QScriptDebuggerValue;
+
+class QScriptDebuggerValuePropertyPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebuggerValueProperty
+{
+public:
+    QScriptDebuggerValueProperty();
+    QScriptDebuggerValueProperty(const QString &name,
+                                 const QScriptDebuggerValue &value,
+                                 const QString &valueAsString,
+                                 QScriptValue::PropertyFlags flags);
+    QScriptDebuggerValueProperty(const QScriptDebuggerValueProperty &other);
+    ~QScriptDebuggerValueProperty();
+
+    QScriptDebuggerValueProperty &operator=(const QScriptDebuggerValueProperty &other);
+
+    QString name() const;
+    QScriptDebuggerValue value() const;
+    QString valueAsString() const;
+    QScriptValue::PropertyFlags flags() const;
+
+    bool isValid() const;
+
+private:
+    QScopedSharedPointer<QScriptDebuggerValuePropertyPrivate> d_ptr;
+
+    Q_DECLARE_PRIVATE(QScriptDebuggerValueProperty)
+};
+
+typedef QList<QScriptDebuggerValueProperty> QScriptDebuggerValuePropertyList;
+
+Q_AUTOTEST_EXPORT QDataStream &operator<<(QDataStream &, const QScriptDebuggerValueProperty &);
+Q_AUTOTEST_EXPORT QDataStream &operator>>(QDataStream &, QScriptDebuggerValueProperty &);
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebuggerwidgetfactoryinterface_p.h b/src/scripttools/debugging/qscriptdebuggerwidgetfactoryinterface_p.h
new file mode 100644
index 0000000..3c5e79a
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebuggerwidgetfactoryinterface_p.h
@@ -0,0 +1,88 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGGERWIDGETFACTORYINTERFACE_P_H
+#define QSCRIPTDEBUGGERWIDGETFACTORYINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebugOutputWidgetInterface;
+class QScriptDebuggerConsoleWidgetInterface;
+class QScriptErrorLogWidgetInterface;
+class QScriptDebuggerCodeFinderWidgetInterface;
+class QScriptDebuggerStackWidgetInterface;
+class QScriptDebuggerScriptsWidgetInterface;
+class QScriptDebuggerLocalsWidgetInterface;
+class QScriptDebuggerCodeWidgetInterface;
+class QScriptBreakpointsWidgetInterface;
+
+class Q_AUTOTEST_EXPORT QScriptDebuggerWidgetFactoryInterface
+{
+public:
+    virtual ~QScriptDebuggerWidgetFactoryInterface() {}
+
+    virtual QScriptDebugOutputWidgetInterface *createDebugOutputWidget() = 0;
+    virtual QScriptDebuggerConsoleWidgetInterface *createConsoleWidget() = 0;
+    virtual QScriptErrorLogWidgetInterface *createErrorLogWidget() = 0;
+    virtual QScriptDebuggerCodeFinderWidgetInterface *createCodeFinderWidget() = 0;
+    virtual QScriptDebuggerStackWidgetInterface *createStackWidget() = 0;
+    virtual QScriptDebuggerScriptsWidgetInterface *createScriptsWidget() = 0;
+    virtual QScriptDebuggerLocalsWidgetInterface *createLocalsWidget() = 0;
+    virtual QScriptDebuggerCodeWidgetInterface *createCodeWidget() = 0;
+    virtual QScriptBreakpointsWidgetInterface *createBreakpointsWidget() = 0;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebugoutputwidget.cpp b/src/scripttools/debugging/qscriptdebugoutputwidget.cpp
new file mode 100644
index 0000000..5bd3d48
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebugoutputwidget.cpp
@@ -0,0 +1,159 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebugoutputwidget_p.h"
+#include "qscriptdebugoutputwidgetinterface_p_p.h"
+
+#include <QtCore/qdebug.h>
+#include <QtGui/qboxlayout.h>
+#include <QtGui/qplaintextedit.h>
+#include <QtGui/qscrollbar.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace {
+
+class QScriptDebugOutputWidgetOutputEdit : public QPlainTextEdit
+{
+public:
+    QScriptDebugOutputWidgetOutputEdit(QWidget *parent = 0)
+        : QPlainTextEdit(parent)
+    {
+        setReadOnly(true);
+//        setFocusPolicy(Qt::NoFocus);
+        setMaximumBlockCount(2500);
+    }
+
+    void scrollToBottom()
+    {
+        QScrollBar *bar = verticalScrollBar();
+        bar->setValue(bar->maximum());
+    }
+
+    int charactersPerLine() const
+    {
+        QFontMetrics fm(font());
+        return width() / fm.maxWidth();
+    }
+};
+
+} // namespace
+
+class QScriptDebugOutputWidgetPrivate
+    : public QScriptDebugOutputWidgetInterfacePrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebugOutputWidget)
+public:
+    QScriptDebugOutputWidgetPrivate();
+    ~QScriptDebugOutputWidgetPrivate();
+
+    QScriptDebugOutputWidgetOutputEdit *outputEdit;
+};
+
+QScriptDebugOutputWidgetPrivate::QScriptDebugOutputWidgetPrivate()
+{
+}
+
+QScriptDebugOutputWidgetPrivate::~QScriptDebugOutputWidgetPrivate()
+{
+}
+
+QScriptDebugOutputWidget::QScriptDebugOutputWidget(QWidget *parent)
+    : QScriptDebugOutputWidgetInterface(*new QScriptDebugOutputWidgetPrivate, parent, 0)
+{
+    Q_D(QScriptDebugOutputWidget);
+    d->outputEdit = new QScriptDebugOutputWidgetOutputEdit();
+    QVBoxLayout *vbox = new QVBoxLayout(this);
+    vbox->setMargin(0);
+    vbox->setSpacing(0);
+    vbox->addWidget(d->outputEdit);
+
+#ifndef QT_NO_STYLE_STYLESHEET
+    QString sheet = QString::fromLatin1("font-size: 14px; font-family: \"Monospace\";");
+    setStyleSheet(sheet);
+#endif
+}
+
+QScriptDebugOutputWidget::~QScriptDebugOutputWidget()
+{
+}
+
+void QScriptDebugOutputWidget::message(
+    QtMsgType type, const QString &text, const QString &fileName,
+    int lineNumber, int columnNumber, const QVariant &/*data*/)
+{
+    // ### unify with QScriptDebuggerConsoleWidget::message()
+    Q_D(QScriptDebugOutputWidget);
+    QString msg;
+    if (!fileName.isEmpty() || (lineNumber != -1)) {
+        if (!fileName.isEmpty())
+            msg.append(fileName);
+        else
+            msg.append(QLatin1String("<noname>"));
+        if (lineNumber != -1) {
+            msg.append(QLatin1Char(':'));
+            msg.append(QString::number(lineNumber));
+            if (columnNumber != -1) {
+                msg.append(QLatin1Char(':'));
+                msg.append(QString::number(columnNumber));
+            }
+        }
+        msg.append(QLatin1String(": "));
+    }
+    msg.append(text);
+    QTextCharFormat oldFmt = d->outputEdit->currentCharFormat();
+    QTextCharFormat fmt(oldFmt);
+    if (type == QtCriticalMsg) {
+        fmt.setForeground(Qt::red);
+        d->outputEdit->setCurrentCharFormat(fmt);
+    }
+    d->outputEdit->appendPlainText(msg);
+    d->outputEdit->setCurrentCharFormat(oldFmt);
+    d->outputEdit->scrollToBottom();
+}
+
+void QScriptDebugOutputWidget::clear()
+{
+    Q_D(QScriptDebugOutputWidget);
+    d->outputEdit->clear();
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebugoutputwidget_p.h b/src/scripttools/debugging/qscriptdebugoutputwidget_p.h
new file mode 100644
index 0000000..f0fd35c
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebugoutputwidget_p.h
@@ -0,0 +1,83 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGOUTPUTWIDGET_P_H
+#define QSCRIPTDEBUGOUTPUTWIDGET_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscriptdebugoutputwidgetinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebugOutputWidgetPrivate;
+class Q_AUTOTEST_EXPORT QScriptDebugOutputWidget:
+    public QScriptDebugOutputWidgetInterface
+{
+    Q_OBJECT
+public:
+    QScriptDebugOutputWidget(QWidget *parent = 0);
+    ~QScriptDebugOutputWidget();
+
+    void message(QtMsgType type, const QString &text,
+                 const QString &fileName = QString(),
+                 int lineNumber = -1, int columnNumber = -1,
+                 const QVariant &data = QVariant());
+
+    void clear();
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebugOutputWidget)
+    Q_DISABLE_COPY(QScriptDebugOutputWidget)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebugoutputwidgetinterface.cpp b/src/scripttools/debugging/qscriptdebugoutputwidgetinterface.cpp
new file mode 100644
index 0000000..92f6640
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebugoutputwidgetinterface.cpp
@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptdebugoutputwidgetinterface_p.h"
+#include "qscriptdebugoutputwidgetinterface_p_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QScriptDebugOutputWidgetInterfacePrivate::QScriptDebugOutputWidgetInterfacePrivate()
+{
+}
+
+QScriptDebugOutputWidgetInterfacePrivate::~QScriptDebugOutputWidgetInterfacePrivate()
+{
+}
+
+QScriptDebugOutputWidgetInterface::~QScriptDebugOutputWidgetInterface()
+{
+}
+
+QScriptDebugOutputWidgetInterface::QScriptDebugOutputWidgetInterface(
+    QScriptDebugOutputWidgetInterfacePrivate &dd,
+    QWidget *parent, Qt::WindowFlags flags)
+    : QWidget(dd, parent, flags)
+{
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptdebugoutputwidgetinterface_p.h b/src/scripttools/debugging/qscriptdebugoutputwidgetinterface_p.h
new file mode 100644
index 0000000..b32f6aa
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebugoutputwidgetinterface_p.h
@@ -0,0 +1,84 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGOUTPUTWIDGETINTERFACE_P_H
+#define QSCRIPTDEBUGOUTPUTWIDGETINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/qwidget.h>
+
+#include "qscriptmessagehandlerinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebugOutputWidgetInterfacePrivate;
+class Q_AUTOTEST_EXPORT QScriptDebugOutputWidgetInterface:
+    public QWidget,
+    public QScriptMessageHandlerInterface
+{
+    Q_OBJECT
+public:
+    ~QScriptDebugOutputWidgetInterface();
+
+    virtual void clear() = 0;
+
+protected:
+    QScriptDebugOutputWidgetInterface(QScriptDebugOutputWidgetInterfacePrivate &dd,
+                                          QWidget *parent, Qt::WindowFlags flags);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptDebugOutputWidgetInterface)
+    Q_DISABLE_COPY(QScriptDebugOutputWidgetInterface)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptdebugoutputwidgetinterface_p_p.h b/src/scripttools/debugging/qscriptdebugoutputwidgetinterface_p_p.h
new file mode 100644
index 0000000..553a806
--- /dev/null
+++ b/src/scripttools/debugging/qscriptdebugoutputwidgetinterface_p_p.h
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTDEBUGOUTPUTWIDGETINTERFACE_P_P_H
+#define QSCRIPTDEBUGOUTPUTWIDGETINTERFACE_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qwidget_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptDebugOutputWidgetInterface;
+class QScriptDebugOutputWidgetInterfacePrivate
+    : public QWidgetPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptDebugOutputWidgetInterface)
+public:
+    QScriptDebugOutputWidgetInterfacePrivate();
+    ~QScriptDebugOutputWidgetInterfacePrivate();
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptedit.cpp b/src/scripttools/debugging/qscriptedit.cpp
new file mode 100644
index 0000000..6024f29
--- /dev/null
+++ b/src/scripttools/debugging/qscriptedit.cpp
@@ -0,0 +1,453 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptedit_p.h"
+#include "qscriptsyntaxhighlighter_p.h"
+
+#include <QtGui/qpainter.h>
+#include <QtGui/qicon.h>
+#include <QtGui/qboxlayout.h>
+#include <QtGui/qlabel.h>
+#include <QtGui/qlineedit.h>
+#include <QtGui/qmenu.h>
+#include <QtGui/qaction.h>
+#include <QtGui/qwidgetaction.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptEditExtraArea : public QWidget
+{
+public:
+    QScriptEditExtraArea(QScriptEdit *edit)
+        : QWidget(edit)
+    {
+        setMouseTracking(true);
+    }
+
+    QSize sizeHint() const {
+        return QSize(editor()->extraAreaWidth(), 0);
+    }
+
+protected:
+    void paintEvent(QPaintEvent *event)
+    {
+        editor()->extraAreaPaintEvent(event);
+    }
+    void mousePressEvent(QMouseEvent *event)
+    {
+        editor()->extraAreaMouseEvent(event);
+    }
+    void mouseMoveEvent(QMouseEvent *event)
+    {
+        editor()->extraAreaMouseEvent(event);
+    }
+    void mouseReleaseEvent(QMouseEvent *event)
+    {
+        editor()->extraAreaMouseEvent(event);
+    }
+    bool event(QEvent *event)
+    {
+        if (editor()->extraAreaEvent(event))
+            return true;
+        return QWidget::event(event);
+    }
+
+private:
+    QScriptEdit *editor() const
+    {
+        return qobject_cast<QScriptEdit*>(parent());
+    }
+};
+
+
+
+QScriptEdit::QScriptEdit(QWidget *parent)
+    : QPlainTextEdit(parent)
+{
+    m_baseLineNumber = 1;
+    m_executionLineNumber = -1;
+
+    m_extraArea = new QScriptEditExtraArea(this);
+
+    QObject::connect(this, SIGNAL(blockCountChanged(int)),
+                     this, SLOT(updateExtraAreaWidth()));
+    QObject::connect(this, SIGNAL(updateRequest(QRect,int)),
+                     this, SLOT(updateExtraArea(QRect,int)));
+    QObject::connect(this, SIGNAL(cursorPositionChanged()),
+                     this, SLOT(highlightCurrentLine()));
+
+    updateExtraAreaWidth();
+
+#ifndef QT_NO_SYNTAXHIGHLIGHTER
+    (void) new QScriptSyntaxHighlighter(document());
+#endif
+}
+
+QScriptEdit::~QScriptEdit()
+{
+}
+
+int QScriptEdit::baseLineNumber() const
+{
+    return m_baseLineNumber;
+}
+
+void QScriptEdit::setBaseLineNumber(int base)
+{
+    m_baseLineNumber = base;
+    m_extraArea->update();
+}
+
+int QScriptEdit::executionLineNumber() const
+{
+    return m_executionLineNumber;
+}
+
+void QScriptEdit::setExecutionLineNumber(int lineNumber, bool error)
+{
+    m_executionLineNumber = lineNumber;
+    m_executionLineNumberHasError = error;
+    m_extraArea->update();
+    updateExtraSelections();
+    gotoLine(lineNumber);
+}
+
+void QScriptEdit::setExecutableLineNumbers(const QSet<int> &lineNumbers)
+{
+    m_executableLineNumbers = lineNumbers;
+}
+
+bool QScriptEdit::isExecutableLine(int lineNumber) const
+{
+#if 0 // ### enable me once we have information about the script again
+    return m_executableLineNumbers.contains(lineNumber);
+#else
+    Q_UNUSED(lineNumber);
+    return true;
+#endif
+}
+
+int QScriptEdit::currentLineNumber() const
+{
+    return textCursor().blockNumber() + m_baseLineNumber;
+}
+
+void QScriptEdit::gotoLine(int lineNumber)
+{
+    int blockNumber = lineNumber - m_baseLineNumber;
+    const QTextBlock &block = document()->findBlockByNumber(blockNumber);
+    if (block.isValid()) {
+        setTextCursor(QTextCursor(block));
+        centerCursor();
+    }
+}
+
+void QScriptEdit::setBreakpoint(int lineNumber)
+{
+    m_breakpoints[lineNumber] = BreakpointData();
+    m_extraArea->update();
+}
+
+void QScriptEdit::setBreakpointEnabled(int lineNumber, bool enable)
+{
+    m_breakpoints[lineNumber].enabled = enable;
+    m_extraArea->update();
+}
+
+void QScriptEdit::deleteBreakpoint(int lineNumber)
+{
+    m_breakpoints.remove(lineNumber);
+    m_extraArea->update();
+}
+
+void QScriptEdit::paintEvent(QPaintEvent *e)
+{
+    QPlainTextEdit::paintEvent(e);
+}
+
+void QScriptEdit::resizeEvent(QResizeEvent *e)
+{
+    QPlainTextEdit::resizeEvent(e);
+
+    QRect cr = contentsRect();
+    int x = isLeftToRight() ? cr.left() : cr.left() + cr.width() - extraAreaWidth();
+    m_extraArea->setGeometry(QRect(x, cr.top(), extraAreaWidth(), cr.height()));
+}
+
+void QScriptEdit::updateExtraAreaWidth()
+{
+    if (isLeftToRight())
+        setViewportMargins(extraAreaWidth(), 0, 0, 0);
+    else
+        setViewportMargins(0, 0, extraAreaWidth(), 0);
+}
+
+void QScriptEdit::updateExtraArea(const QRect &rect, int dy)
+{
+    if (dy)
+        m_extraArea->scroll(0, dy);
+    else
+        m_extraArea->update(0, rect.y(), m_extraArea->width(), rect.height());
+
+    if (rect.contains(viewport()->rect()))
+        updateExtraAreaWidth();
+}
+
+void QScriptEdit::highlightCurrentLine()
+{
+    updateExtraSelections();
+}
+
+void QScriptEdit::updateExtraSelections()
+{
+    QList<QTextEdit::ExtraSelection> extraSelections;
+
+    {
+        QTextEdit::ExtraSelection selection;
+        QColor lineColor = QColor(Qt::yellow).lighter(160);
+        selection.format.setBackground(lineColor);
+        selection.format.setProperty(QTextFormat::FullWidthSelection, true);
+        selection.cursor = textCursor();
+        selection.cursor.clearSelection();
+        extraSelections.append(selection);
+    }
+    if (m_executionLineNumber != -1) {
+        QTextEdit::ExtraSelection selection;
+        QColor lineColor;
+        if (m_executionLineNumberHasError)
+            lineColor = QColor(Qt::red);
+        else
+            lineColor = QColor(Qt::green).lighter(160);
+        selection.format.setBackground(lineColor);
+        selection.format.setProperty(QTextFormat::FullWidthSelection, true);
+        int blockNumber = m_executionLineNumber - m_baseLineNumber;
+        selection.cursor = QTextCursor(document()->findBlockByNumber(blockNumber));
+        selection.cursor.clearSelection();
+        extraSelections.append(selection);
+    }
+
+    setExtraSelections(extraSelections);
+}
+
+int QScriptEdit::extraAreaWidth() const
+{
+    int space = 0;
+    const QFontMetrics fm(fontMetrics());
+
+    int digits = 1;
+    int max = qMax(1, blockCount() + m_baseLineNumber);
+    while (max >= 10) {
+        max /= 10;
+        ++digits;
+    }
+    space += fm.width(QLatin1Char('9')) * digits;
+
+    int markWidth = fm.lineSpacing();
+    space += markWidth;
+
+    space += 4;
+
+    return space;
+}
+
+void QScriptEdit::extraAreaPaintEvent(QPaintEvent *e)
+{
+    QRect rect = e->rect();
+    QPalette pal = palette();
+    pal.setCurrentColorGroup(QPalette::Active);
+    QPainter painter(m_extraArea);
+    painter.fillRect(rect, Qt::lightGray);
+    const QFontMetrics fm(fontMetrics());
+
+    int markWidth = fm.lineSpacing();
+    int extraAreaWidth = m_extraArea->width();
+
+    QLinearGradient gradient(QPointF(extraAreaWidth - 10, 0), QPointF(extraAreaWidth, 0));
+    gradient.setColorAt(0, pal.color(QPalette::Background));
+    gradient.setColorAt(1, pal.color(QPalette::Base));
+    painter.fillRect(rect, gradient);
+
+    QLinearGradient gradient2(QPointF(0, 0), QPointF(markWidth, 0));
+    gradient2.setColorAt(0, pal.color(QPalette::Dark));
+    gradient2.setColorAt(1, pal.color(QPalette::Background));
+    painter.fillRect(rect.intersected(QRect(rect.x(), rect.y(), markWidth, rect.height())), gradient2);
+
+    painter.setPen(QPen(pal.color(QPalette::Background), 2));
+    if (isLeftToRight())
+        painter.drawLine(rect.x() + extraAreaWidth-1, rect.top(), rect.x() + extraAreaWidth-1, rect.bottom());
+    else
+        painter.drawLine(rect.x(), rect.top(), rect.x(), rect.bottom());
+    painter.setRenderHint(QPainter::Antialiasing);
+
+    QTextBlock block = firstVisibleBlock();
+    int blockNumber = block.blockNumber();
+    qreal top = blockBoundingGeometry(block).translated(contentOffset()).top();
+    qreal bottom = top + blockBoundingRect(block).height();
+
+    QString imagesPath = QString::fromLatin1(":/qt/scripttools/debugging/images");
+    QString imageExt;
+// SVGs don't work on all platforms, even when QT_NO_SVG is not defined, so disable SVG usage for now.
+// #ifndef QT_NO_SVG
+#if 0
+    imageExt = QString::fromLatin1("svg");
+#else
+    imageExt = QString::fromLatin1("png");
+#endif
+
+    while (block.isValid() && top <= rect.bottom()) {
+        if (block.isVisible() && bottom >= rect.top()) {
+
+            int lineNumber = blockNumber + m_baseLineNumber;
+            if (m_breakpoints.contains(lineNumber)) {
+                int radius = fm.lineSpacing() - 1;
+                QRect r(rect.x(), (int)top, radius, radius);
+                QIcon icon(m_breakpoints[lineNumber].enabled
+                           ? QString::fromLatin1("%0/breakpoint.%1").arg(imagesPath).arg(imageExt)
+                           : QString::fromLatin1("%0/d_breakpoint.%1").arg(imagesPath).arg(imageExt));
+                icon.paint(&painter, r, Qt::AlignCenter);
+            }
+            if (m_executionLineNumber == lineNumber) {
+                int radius = fm.lineSpacing() - 1;
+                QRect r(rect.x(), (int)top, radius, radius);
+                QIcon icon(QString::fromLatin1("%0/location.%1").arg(imagesPath).arg(imageExt));
+                icon.paint(&painter, r, Qt::AlignCenter);
+            }
+
+            if (!isExecutableLine(lineNumber))
+                painter.setPen(pal.color(QPalette::Mid));
+            else
+                painter.setPen(QColor(Qt::darkCyan));
+            QString number = QString::number(lineNumber);
+            painter.drawText(rect.x() + markWidth, (int)top, rect.x() + extraAreaWidth - markWidth - 4,
+                             fm.height(), Qt::AlignRight, number);
+        }
+
+        block = block.next();
+        top = bottom;
+        bottom = top + blockBoundingRect(block).height();
+        ++blockNumber;
+    }
+}
+
+void QScriptEdit::extraAreaMouseEvent(QMouseEvent *e)
+{
+    QTextCursor cursor = cursorForPosition(QPoint(0, e->pos().y()));
+    cursor.setPosition(cursor.block().position());
+
+    QFontMetrics fm(font());
+    int markWidth = fm.lineSpacing();
+
+    if (e->type() == QEvent::MouseMove && e->buttons() == 0) { // mouse tracking
+        bool hand = (e->pos().x() <= markWidth);
+        int lineNumber = cursor.blockNumber() + m_baseLineNumber;
+        hand = hand && isExecutableLine(lineNumber);
+#ifndef QT_NO_CURSOR
+        if (hand != (m_extraArea->cursor().shape() == Qt::PointingHandCursor))
+            m_extraArea->setCursor(hand ? Qt::PointingHandCursor : Qt::ArrowCursor);
+#endif
+    }
+
+    if (e->type() == QEvent::MouseButtonPress) {
+        if (e->button() == Qt::LeftButton) {
+            int lineNumber = cursor.blockNumber() + m_baseLineNumber;
+            bool executable = isExecutableLine(lineNumber);
+            if ((e->pos().x() <= markWidth) && executable)
+                m_extraAreaToggleBlockNumber = cursor.blockNumber();
+            else
+                m_extraAreaToggleBlockNumber = -1;
+        }
+    } else if (e->type() == QEvent::MouseButtonRelease) {
+        if (e->button() == Qt::LeftButton) {
+            if ((m_extraAreaToggleBlockNumber != -1) && (e->pos().x() <= markWidth)) {
+                int lineNumber = m_extraAreaToggleBlockNumber + m_baseLineNumber;
+                bool on = !m_breakpoints.contains(lineNumber);
+                emit breakpointToggleRequest(lineNumber, on);
+            }
+        } else if (e->button() == Qt::RightButton) {
+            int lineNumber = cursor.blockNumber() + m_baseLineNumber;
+            if (!isExecutableLine(lineNumber))
+                return;
+            bool has = m_breakpoints.contains(lineNumber);
+            QMenu *popup = new QMenu();
+            QAction *toggleAct = new QAction(tr("Toggle Breakpoint"), popup);
+            popup->addAction(toggleAct);
+            QAction *disableAct = new QAction(tr("Disable Breakpoint"), popup);
+            QAction *enableAct = new QAction(tr("Enable Breakpoint"), popup);
+            QWidget *conditionWidget = new QWidget();
+            {
+                QHBoxLayout *hbox = new QHBoxLayout(conditionWidget);
+                hbox->addWidget(new QLabel(tr("Breakpoint Condition:")));
+                hbox->addWidget(new QLineEdit());
+            }
+//            QWidgetAction *conditionAct = new QWidgetAction(popup);
+//            conditionAct->setDefaultWidget(conditionWidget);
+            if (has) {
+                popup->addSeparator();
+                popup->addAction(m_breakpoints[lineNumber].enabled ? disableAct : enableAct);
+//                popup->addAction(conditionAct);
+            }
+            QAction *ret = popup->exec(e->globalPos());
+            if (ret) {
+                if (ret == toggleAct) {
+                    emit breakpointToggleRequest(lineNumber, !has);
+                } else if (ret == disableAct) {
+                    emit breakpointEnableRequest(lineNumber, false);
+                } else if (ret == enableAct) {
+                    emit breakpointEnableRequest(lineNumber, true);
+                }// else if (ret == conditionAct) {
+                //}
+            }
+            popup->deleteLater();
+        }
+    }
+}
+
+bool QScriptEdit::extraAreaEvent(QEvent *e)
+{
+    if (e->type() == QEvent::ToolTip) {
+        // ### show the breakpoint's condition, if any
+        return true;
+    }
+    return false;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptedit_p.h b/src/scripttools/debugging/qscriptedit_p.h
new file mode 100644
index 0000000..5223dac
--- /dev/null
+++ b/src/scripttools/debugging/qscriptedit_p.h
@@ -0,0 +1,132 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTEDIT_P_H
+#define QSCRIPTEDIT_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/qplaintextedit.h>
+
+#include <QtCore/qhash.h>
+#include <QtCore/qset.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptEditExtraArea;
+
+class Q_AUTOTEST_EXPORT QScriptEdit : public QPlainTextEdit
+{
+    Q_OBJECT
+public:
+    QScriptEdit(QWidget *parent = 0);
+    ~QScriptEdit();
+
+    int baseLineNumber() const;
+    void setBaseLineNumber(int base);
+
+    int executionLineNumber() const;
+    void setExecutionLineNumber(int lineNumber, bool error);
+    void setExecutableLineNumbers(const QSet<int> &lineNumbers);
+    bool isExecutableLine(int lineNumber) const;
+
+    int currentLineNumber() const;
+    void gotoLine(int lineNumber);
+
+    void setBreakpoint(int lineNumber);
+    void setBreakpointEnabled(int lineNumber, bool enable);
+    void deleteBreakpoint(int lineNumber);
+
+    int extraAreaWidth() const;
+
+signals:
+    void breakpointToggleRequest(int lineNumber, bool on);
+    void breakpointEnableRequest(int lineNumber, bool enable);
+
+protected:
+    void paintEvent(QPaintEvent *e);
+    void resizeEvent(QResizeEvent *e);
+
+    void extraAreaPaintEvent(QPaintEvent *e);
+    void extraAreaMouseEvent(QMouseEvent *e);
+    bool extraAreaEvent(QEvent *e);
+
+private slots:
+    void updateExtraAreaWidth();
+    void updateExtraArea(const QRect &, int);
+    void highlightCurrentLine();
+
+private:
+    QTextEdit::ExtraSelection currentLineSelection() const;
+    QTextEdit::ExtraSelection currentExecutionLineSelection() const;
+    void updateExtraSelections();
+
+private:
+    QScriptEditExtraArea *m_extraArea;
+    int m_baseLineNumber;
+    int m_executionLineNumber;
+    QSet<int> m_executableLineNumbers;
+    bool m_executionLineNumberHasError;
+    int m_extraAreaToggleBlockNumber;
+
+    struct BreakpointData {
+        BreakpointData() : enabled(true) {}
+        bool enabled;
+    };
+    QHash<int, BreakpointData> m_breakpoints;
+
+private:
+    Q_DISABLE_COPY(QScriptEdit)
+    friend class QScriptEditExtraArea;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptenginedebugger.cpp b/src/scripttools/debugging/qscriptenginedebugger.cpp
new file mode 100644
index 0000000..d2ff9d0
--- /dev/null
+++ b/src/scripttools/debugging/qscriptenginedebugger.cpp
@@ -0,0 +1,667 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptenginedebugger.h"
+#include "qscriptdebugger_p.h"
+#include "qscriptenginedebuggerfrontend_p.h"
+#include "qscriptdebuggerstandardwidgetfactory_p.h"
+#include <private/qobject_p.h>
+
+#include <QtCore/qsettings.h>
+#include <QtGui/qapplication.h>
+#include <QtGui/qdockwidget.h>
+#include <QtGui/qmainwindow.h>
+#include <QtGui/qmenubar.h>
+#include <QtGui/qboxlayout.h>
+
+// this has to be outside the namespace
+static void initScriptEngineDebuggerResources()
+{
+    Q_INIT_RESOURCE(scripttools_debugging);
+}
+
+QT_BEGIN_NAMESPACE
+
+class QtScriptDebuggerResourceInitializer
+{
+public:
+    QtScriptDebuggerResourceInitializer() {
+        // call outside-the-namespace function
+        initScriptEngineDebuggerResources();
+    }
+};
+
+/*!
+  \since 4.5
+  \class QScriptEngineDebugger
+
+  \brief The QScriptEngineDebugger class provides a QScriptEngine debugger.
+
+  \ingroup script
+
+
+  The QScriptEngineDebugger class provides a debugger that can be
+  embedded into Qt applications that use Qt Script. The debugger
+  enables the application user to inspect the state of the script
+  environment and control script execution.
+
+  To attach the debugger to a script engine, call the attachTo()
+  function.
+
+  \snippet doc/src/snippets/code/src.scripttools.qscriptenginedebugger.cpp 0
+
+  Once the debugger has been attached to a script engine, you can
+  proceed to evaluate scripts as usual, e.g. by calling
+  QScriptEngine::evaluate(). The debugger will be triggered when an
+  uncaught exception occurs, or when a \c{debugger} statement is
+  encountered in a script. It is also possible to interrupt script
+  evaluation at an arbitrary time by triggering the InterruptAction.
+  For instance, to start the debugger when script evaluation starts,
+  you trigger the action before you begin to \l{QScriptEngine::}{evaluate()}
+  the script.
+
+  \snippet doc/src/snippets/scriptdebugger.cpp 2
+
+  By default, the \l{standardWindow()}{standard debugger window} is shown when
+  evaluation is suspended.  This can be changed by calling the
+  setAutoShowStandardWindow() function.
+
+  The debugger defines a set of \l{DebuggerAction}{actions} that are
+  available, such as stopping execution or printing the contents of a
+  variable. It also provides a set of widgets (components) that
+  display the information available from the debugger and that trigger
+  the actions on request. The actions available are identified by the
+  DebuggerAction enum, and the widgets are identified by the
+  DebuggerWidget enum.
+
+  Access to the individual debugger widgets is provided by the
+  widget() function. This makes it possible to arrange the widgets in
+  a custom manner. Similarly, the action() function provides access
+  to the various debugger actions.
+
+  The createStandardToolBar() function creates a standard toolbar, and the
+  createStandardMenu() function creates a standard menu; these functions can
+  be useful if you are creating a custom debugger configuration.
+
+  The evaluationSuspended() signal is emitted when the debugger has
+  suspended script evaluation and entered interactive mode, i.e., the
+  mode in which it accepts input from the user. The
+  evaluationResumed() signal is emitted when script evaluation is
+  resumed, i.e, when execution control is given back to the script
+  engine. The state() function returns the debugger's current state.
+
+  When calling QScriptEngine::evaluate() it is useful to pass a
+  descriptive script name (file name) as second argument, as this is
+  the name that will be displayed by the debugger in the
+  ScriptsWidget; if a name is not passed, the script will be labelled
+  "anonymous".
+
+  When evaluation is suspended, the debugger will also suspend the
+  event loop of the script. In the following snippet, the call to
+  QScriptEngine::evaluate() causes the debugger to be triggered, and
+  the function call does not return until the user has finished
+  interacting with the debugger.
+
+  \snippet doc/src/snippets/code/src.scripttools.qscriptenginedebugger.cpp 1
+
+  When the Qt Script debugger is running, the C++ application itself
+  is not "frozen". This means that it is possible that more scripts
+  are evaluated, even though the debugger has suspended evaluation of
+  the \bold{current} script evaluation. For example, a C++ timer might
+  trigger that causes a script function to be called, or the user
+  might click on a button in the main application user interface whose
+  clicked() signal is connected to a script function. This kind of
+  nested evaluation is permitted. The debugger will enter interactive
+  mode for the new script if an exception is thrown or a breakpoint is
+  reached. Note that it will not stop when encountering \c{debugger}
+  statements. \omit The effects are similar to those achieved by
+  typing a program into the debugger's console and evaluating
+  it. \endomit
+
+  Nested evaluation requires some thought when deciding
+  how the debugger is presented to the user; for example, whether a
+  modal dialog is suitable, or whether some parts of the main
+  application user interface should be disabled while the debugger is
+  running. \omit Seems unfinished somehow \endomit
+
+  Debugging inside of a \l{QWidget::paintEvent()}{paintEvent}() is
+  currently not supported. If you need to debug painting-related
+  script code, that code should be evaluated outside of the C++
+  paintEvent(), e.g. by rendering to an image, like the Context2D and
+  Tetrix QtScript examples do. This will make the code safe for
+  debugging.
+
+  The debugger adds some special properties to the script engine:
+  \c{__FILE__} holds the name of the script in which the current
+  evaluation occurs, and \c{__LINE__} holds the current line
+  number. These are useful when doing print()-style debugging (the
+  messages appear in the debugger's debug output widget).
+
+  The \l{Qt Script Debugger Manual} describes how to use the debugger.
+  The \l{Context2D Example}{Context2D example} shows how to integrate
+  the debugger in applications.
+
+  \sa QScriptEngine, {Context2D Example}
+*/
+
+/*!
+    \enum QScriptEngineDebugger::DebuggerWidget
+
+    This enum decides the widget that the widget() function should
+    retrieve. We treat these widgets in more detail in the \l{Qt
+    Script Debugger Manual}.
+
+    \value ConsoleWidget Provides a command-line interface to the debugger.
+    \value StackWidget Shows a backtrace of the script's execution state.
+    \value ScriptsWidget Displays a list of currently loaded scripts.
+    \value LocalsWidget Shows the local variables of the current stack frame.
+    \value CodeWidget Displays the code of the current script.
+    \value CodeFinderWidget Provides a widget that can search for text in the script shown in the
+           CodeWidget.
+    \value BreakpointsWidget Shows breakpoints that have been set.
+    \value DebugOutputWidget Contains output from the \c print() script function.
+    \value ErrorLogWidget Shows error messages that have been generated.
+*/
+
+/*!
+    \enum QScriptEngineDebugger::DebuggerAction
+
+    This enum specifies the action that the action() function should
+    retrieve.  The actions retrieved can be connected to any slot and
+    connected to any widget. Please see the \l{Qt Script Debugger Manual}'s
+    \l{Console Command Reference} for a detailed description of these actions.
+
+    \value InterruptAction Suspends script execution as soon as the next script statement is reached.
+    \value ContinueAction Gives the execution control back to the script engine.
+    \value StepIntoAction Performs a step action.
+    \value StepOverAction Performs a next action.
+    \value StepOutAction Executes the script until the current function returns.
+    \value RunToCursorAction Continues execution to the selected line (which contains the cursor) in the CodeWidget.
+    \value RunToNewScriptAction Returns control to the script engine until a new script is executed.
+    \value ToggleBreakpointAction Toggles a breakpoint at the selected line in the CodeWidget.
+    \value ClearDebugOutputAction Clears the contents of the DebugOutputWidget.
+    \value ClearErrorLogAction Clears the contents of the ErrorLogWidget.
+    \value ClearConsoleAction Clears the contents of the ConsoleWidget.
+    \value FindInScriptAction Displays the CodeFinderWidget.
+    \value FindNextInScriptAction Finds next occurrence in the CodeWidget.
+    \value FindPreviousInScriptAction Finds previous occurrence in the CodeWidget.
+    \value GoToLineAction Shows the "Go to Line" dialog.
+*/
+
+/*!
+    \enum QScriptEngineDebugger::DebuggerState
+    \since 4.6
+
+    This enum specifies the current state of the debugger.
+
+    \value RunningState   The debugger is running.  (Script evaluation is allowed.)
+    \value SuspendedState The debugger has suspended script evaluation.
+*/
+
+class QScriptEngineDebuggerPrivate
+    : public QObjectPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptEngineDebugger)
+public:
+    QScriptEngineDebuggerPrivate();
+    ~QScriptEngineDebuggerPrivate();
+
+    // private slots
+    void _q_showStandardWindow();
+
+    void createDebugger();
+
+    QScriptDebugger *debugger;
+    QScriptEngineDebuggerFrontend *frontend;
+#ifndef QT_NO_MAINWINDOW
+    QMainWindow *standardWindow;
+#endif
+    bool autoShow;
+
+    static QtScriptDebuggerResourceInitializer resourceInitializer;
+};
+
+namespace {
+
+class WidgetClosedNotifier : public QObject
+{
+    Q_OBJECT
+public:
+    WidgetClosedNotifier(QWidget *w, QObject *parent = 0)
+        : QObject(parent), widget(w)
+    {
+        w->installEventFilter(this);
+    }
+
+    bool eventFilter(QObject *watched, QEvent *e)
+    {
+        if (watched != widget)
+            return false;
+        if (e->type() != QEvent::Close)
+            return false;
+        emit widgetClosed();
+        return true;
+    }
+
+Q_SIGNALS:
+    void widgetClosed();
+
+private:
+    QWidget *widget;
+};
+
+} // namespace
+
+QtScriptDebuggerResourceInitializer QScriptEngineDebuggerPrivate::resourceInitializer;
+
+QScriptEngineDebuggerPrivate::QScriptEngineDebuggerPrivate()
+{
+    debugger = 0;
+    frontend = 0;
+#ifndef QT_NO_MAINWINDOW
+    standardWindow = 0;
+#endif
+    autoShow = true;
+}
+
+QScriptEngineDebuggerPrivate::~QScriptEngineDebuggerPrivate()
+{
+    delete debugger;
+    delete frontend;
+#ifndef QT_NO_MAINWINDOW
+    if (standardWindow) {
+        QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
+        QByteArray geometry = standardWindow->saveGeometry();
+        settings.setValue(QLatin1String("Qt/scripttools/debugging/mainWindowGeometry"), geometry);
+        QByteArray state = standardWindow->saveState();
+        settings.setValue(QLatin1String("Qt/scripttools/debugging/mainWindowState"), state);
+        if (standardWindow->parent() == 0)
+            delete standardWindow;
+    }
+#endif
+}
+
+#ifndef QT_NO_MAINWINDOW
+void QScriptEngineDebuggerPrivate::_q_showStandardWindow()
+{
+    Q_Q(QScriptEngineDebugger);
+    (void)q->standardWindow(); // ensure it's created
+    standardWindow->show();
+}
+#endif
+
+void QScriptEngineDebuggerPrivate::createDebugger()
+{
+    Q_Q(QScriptEngineDebugger);
+    if (!debugger) {
+        debugger = new QScriptDebugger();
+        debugger->setWidgetFactory(new QScriptDebuggerStandardWidgetFactory(q));
+        QObject::connect(debugger, SIGNAL(started()),
+                         q, SIGNAL(evaluationResumed()));
+        QObject::connect(debugger, SIGNAL(stopped()),
+                         q, SIGNAL(evaluationSuspended()));
+        if (autoShow) {
+            QObject::connect(q, SIGNAL(evaluationSuspended()),
+                             q, SLOT(_q_showStandardWindow()));
+        }
+    }
+}
+
+/*!
+  Constructs a new QScriptEngineDebugger object with the given \a
+  parent.
+
+  To attach a QScriptEngine to the debugger, use attachTo()
+  function.
+
+*/
+QScriptEngineDebugger::QScriptEngineDebugger(QObject *parent)
+    : QObject(*new QScriptEngineDebuggerPrivate, parent)
+{
+}
+
+/*!
+  Destroys this QScriptEngineDebugger.
+*/
+QScriptEngineDebugger::~QScriptEngineDebugger()
+{
+}
+
+/*!
+  Attaches to the given \a engine.
+
+  The debugger will install a custom agent (using
+  QScriptEngine::setAgent()) to monitor the engine. While the debugger
+  is attached, you should not change the agent; however, if you do
+  have to perform additional monitoring, you must set a proxy agent
+  that forwards all events to the debugger's agent.
+
+  \sa detach()
+*/
+void QScriptEngineDebugger::attachTo(QScriptEngine *engine)
+{
+    Q_D(QScriptEngineDebugger);
+    if (!engine) {
+        detach();
+        return;
+    }
+    d->createDebugger();
+    if (!d->frontend)
+        d->frontend = new QScriptEngineDebuggerFrontend();
+    d->frontend->attachTo(engine);
+    d->debugger->setFrontend(d->frontend);
+}
+
+/*!
+  Detaches from the current script engine, if any.
+
+  \sa attachTo()
+*/
+void QScriptEngineDebugger::detach()
+{
+    Q_D(QScriptEngineDebugger);
+    if (d->frontend)
+        d->frontend->detach();
+    if (d->debugger)
+        d->debugger->setFrontend(0);
+}
+
+/*!
+  \since 4.6
+
+  Returns the current state of the debugger.
+
+  \sa evaluationResumed()
+  \sa evaluationSuspended()
+*/
+QScriptEngineDebugger::DebuggerState QScriptEngineDebugger::state() const
+{
+    Q_D(const QScriptEngineDebugger);
+    return !d->debugger || !d->debugger->isInteractive() ? SuspendedState : RunningState;
+}
+
+/*!
+
+    Returns a pointer to the instance of the specified standard \a
+    widget. The widgets available are defined by the DebuggerWidget
+    enum.
+
+    A main window containing all widgets is returned by
+    standardWindow(). If you do not want to use this window, you can
+    fetch the individual widgets with this function. For instance, the
+    code example below shows how to set up a layout containing a
+    \l{QScriptEngineDebugger::CodeWidget}{code window} and a
+    \l{QScriptEngineDebugger::StackWidget}{stack widget}.
+
+    \snippet doc/src/snippets/scriptdebugger.cpp 0
+
+    Note that you need to set setAutoShowStandardWindow() to false; if
+    not, the standard window will be shown regardless.
+
+    \sa action(), standardWindow(), setAutoShowStandardWindow()
+*/
+QWidget *QScriptEngineDebugger::widget(DebuggerWidget widget) const
+{
+    Q_D(const QScriptEngineDebugger);
+    const_cast<QScriptEngineDebuggerPrivate*>(d)->createDebugger();
+    return d->debugger->widget(static_cast<QScriptDebugger::DebuggerWidget>(static_cast<int>(widget)));
+}
+
+/*!
+    Returns a pointer to the specified \a action. The actions available
+    are given by the DebuggerAction enum.
+
+    With this function, you can add the actions to your own widgets,
+    toolbars, and menus. It is also convenient if you, for example,
+    wish to spice things up with your own groovy icons. The code
+    example below shows how to add actions to a QToolBar.
+
+    \snippet doc/src/snippets/scriptdebugger.cpp 1
+
+    Note that QScriptEngineDebugger has already added the actions to
+    its \l{DebuggerWidget}{standard widgets} and \l{standardWindow()}{standard window}.
+
+    \sa widget(), createStandardMenu(), createStandardToolBar(), standardWindow()
+*/
+QAction *QScriptEngineDebugger::action(DebuggerAction action) const
+{
+    Q_D(const QScriptEngineDebugger);
+    QScriptEngineDebugger *that = const_cast<QScriptEngineDebugger*>(this);
+    that->d_func()->createDebugger();
+    return d->debugger->action(static_cast<QScriptDebugger::DebuggerAction>(static_cast<int>(action)), that);
+}
+
+/*!
+  Returns whether the standard debugger window is automatically shown when
+  evaluation is suspended.
+
+  The default is true.
+*/
+bool QScriptEngineDebugger::autoShowStandardWindow() const
+{
+    Q_D(const QScriptEngineDebugger);
+    return d->autoShow;
+}
+
+/*!
+  Sets whether the standard debugger window is automatically shown when
+  evaluation is suspended. If \a autoShow is true, the window will be
+  automatically shown, otherwise it will not.
+*/
+void QScriptEngineDebugger::setAutoShowStandardWindow(bool autoShow)
+{
+    Q_D(QScriptEngineDebugger);
+    if (autoShow == d->autoShow)
+        return;
+    if (autoShow) {
+        QObject::connect(this, SIGNAL(evaluationSuspended()),
+                         this, SLOT(_q_showStandardWindow()));
+    } else {
+        QObject::disconnect(this, SIGNAL(evaluationSuspended()),
+                            this, SLOT(_q_showStandardWindow()));
+    }
+    d->autoShow = autoShow;
+}
+
+/*!
+  Returns a main window with a standard configuration of the debugger's
+  components.
+
+  \sa createStandardMenu(), createStandardToolBar()
+*/
+#ifndef QT_NO_MAINWINDOW
+QMainWindow *QScriptEngineDebugger::standardWindow() const
+{
+    Q_D(const QScriptEngineDebugger);
+    if (d->standardWindow)
+        return d->standardWindow;
+    if (!QApplication::instance())
+        return 0;
+    QScriptEngineDebugger *that = const_cast<QScriptEngineDebugger*>(this);
+
+    QMainWindow *win = new QMainWindow();
+    QDockWidget *scriptsDock = new QDockWidget(win);
+    scriptsDock->setObjectName(QLatin1String("qtscriptdebugger_scriptsDockWidget"));
+    scriptsDock->setWindowTitle(tr("Loaded Scripts"));
+    scriptsDock->setWidget(widget(ScriptsWidget));
+    win->addDockWidget(Qt::LeftDockWidgetArea, scriptsDock);
+
+    QDockWidget *breakpointsDock = new QDockWidget(win);
+    breakpointsDock->setObjectName(QLatin1String("qtscriptdebugger_breakpointsDockWidget"));
+    breakpointsDock->setWindowTitle(tr("Breakpoints"));
+    breakpointsDock->setWidget(widget(BreakpointsWidget));
+    win->addDockWidget(Qt::LeftDockWidgetArea, breakpointsDock);
+
+    QDockWidget *stackDock = new QDockWidget(win);
+    stackDock->setObjectName(QLatin1String("qtscriptdebugger_stackDockWidget"));
+    stackDock->setWindowTitle(tr("Stack"));
+    stackDock->setWidget(widget(StackWidget));
+    win->addDockWidget(Qt::RightDockWidgetArea, stackDock);
+
+    QDockWidget *localsDock = new QDockWidget(win);
+    localsDock->setObjectName(QLatin1String("qtscriptdebugger_localsDockWidget"));
+    localsDock->setWindowTitle(tr("Locals"));
+    localsDock->setWidget(widget(LocalsWidget));
+    win->addDockWidget(Qt::RightDockWidgetArea, localsDock);
+
+    QDockWidget *consoleDock = new QDockWidget(win);
+    consoleDock->setObjectName(QLatin1String("qtscriptdebugger_consoleDockWidget"));
+    consoleDock->setWindowTitle(tr("Console"));
+    consoleDock->setWidget(widget(ConsoleWidget));
+    win->addDockWidget(Qt::BottomDockWidgetArea, consoleDock);
+
+    QDockWidget *debugOutputDock = new QDockWidget(win);
+    debugOutputDock->setObjectName(QLatin1String("qtscriptdebugger_debugOutputDockWidget"));
+    debugOutputDock->setWindowTitle(tr("Debug Output"));
+    debugOutputDock->setWidget(widget(DebugOutputWidget));
+    win->addDockWidget(Qt::BottomDockWidgetArea, debugOutputDock);
+
+    QDockWidget *errorLogDock = new QDockWidget(win);
+    errorLogDock->setObjectName(QLatin1String("qtscriptdebugger_errorLogDockWidget"));
+    errorLogDock->setWindowTitle(tr("Error Log"));
+    errorLogDock->setWidget(widget(ErrorLogWidget));
+    win->addDockWidget(Qt::BottomDockWidgetArea, errorLogDock);
+
+    win->tabifyDockWidget(errorLogDock, debugOutputDock);
+    win->tabifyDockWidget(debugOutputDock, consoleDock);
+
+    win->addToolBar(Qt::TopToolBarArea, that->createStandardToolBar());
+
+#ifndef QT_NO_MENUBAR
+    win->menuBar()->addMenu(that->createStandardMenu(win));
+
+    QMenu *editMenu = win->menuBar()->addMenu(tr("Search"));
+    editMenu->addAction(action(FindInScriptAction));
+    editMenu->addAction(action(FindNextInScriptAction));
+    editMenu->addAction(action(FindPreviousInScriptAction));
+    editMenu->addSeparator();
+    editMenu->addAction(action(GoToLineAction));
+
+    QMenu *viewMenu = win->menuBar()->addMenu(tr("View"));
+    viewMenu->addAction(scriptsDock->toggleViewAction());
+    viewMenu->addAction(breakpointsDock->toggleViewAction());
+    viewMenu->addAction(stackDock->toggleViewAction());
+    viewMenu->addAction(localsDock->toggleViewAction());
+    viewMenu->addAction(consoleDock->toggleViewAction());
+    viewMenu->addAction(debugOutputDock->toggleViewAction());
+    viewMenu->addAction(errorLogDock->toggleViewAction());
+#endif
+
+    QWidget *central = new QWidget();
+    QVBoxLayout *vbox = new QVBoxLayout(central);
+    vbox->setMargin(0);
+    vbox->addWidget(widget(CodeWidget));
+    vbox->addWidget(widget(CodeFinderWidget));
+    widget(CodeFinderWidget)->hide();
+    win->setCentralWidget(central);
+
+    win->setWindowTitle(tr("Qt Script Debugger"));
+    win->setUnifiedTitleAndToolBarOnMac(true);
+
+    QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
+    QVariant geometry = settings.value(QLatin1String("Qt/scripttools/debugging/mainWindowGeometry"));
+    if (geometry.isValid())
+        win->restoreGeometry(geometry.toByteArray());
+    QVariant state = settings.value(QLatin1String("Qt/scripttools/debugging/mainWindowState"));
+    if (state.isValid())
+        win->restoreState(state.toByteArray());
+
+    WidgetClosedNotifier *closedNotifier = new WidgetClosedNotifier(win, that);
+    QObject::connect(closedNotifier, SIGNAL(widgetClosed()),
+                     action(ContinueAction), SLOT(trigger()));
+
+    const_cast<QScriptEngineDebuggerPrivate*>(d)->standardWindow = win;
+    return win;
+}
+#endif // QT_NO_MAINWINDOW
+
+/*!
+  Creates a standard debugger menu with the given \a parent.
+  Returns the new menu object.
+
+  \sa createStandardToolBar()
+*/
+QMenu *QScriptEngineDebugger::createStandardMenu(QWidget *parent)
+{
+    Q_D(QScriptEngineDebugger);
+    d->createDebugger();
+    return d->debugger->createStandardMenu(parent, this);
+}
+
+/*!
+  Creates a standard debugger toolbar with the given \a parent.
+  Returns the new toolbar object.
+
+  \sa createStandardMenu()
+*/
+#ifndef QT_NO_TOOLBAR
+QToolBar *QScriptEngineDebugger::createStandardToolBar(QWidget *parent)
+{
+    Q_D(QScriptEngineDebugger);
+    d->createDebugger();
+    return d->debugger->createStandardToolBar(parent, this);
+}
+#endif
+
+/*!
+    \fn QScriptEngineDebugger::evaluationSuspended()
+
+    This signal is emitted when the debugger has suspended script
+    evaluation for whatever reason (e.g. due to an uncaught script
+    exception, or due to a breakpoint being triggered).
+
+    \sa evaluationResumed()
+*/
+
+/*!
+    \fn QScriptEngineDebugger::evaluationResumed()
+
+    This signal is emitted when the debugger has resumed script
+    evaluation (e.g. the user gave the "continue" command).
+
+    \sa evaluationSuspended()
+*/
+
+QT_END_NAMESPACE
+
+#include "qscriptenginedebugger.moc"
+
+#include "moc_qscriptenginedebugger.cpp"
diff --git a/src/scripttools/debugging/qscriptenginedebugger.h b/src/scripttools/debugging/qscriptenginedebugger.h
new file mode 100644
index 0000000..69e354a
--- /dev/null
+++ b/src/scripttools/debugging/qscriptenginedebugger.h
@@ -0,0 +1,137 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTENGINEDEBUGGER_H
+#define QSCRIPTENGINEDEBUGGER_H
+
+#include <QtCore/qobject.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(ScriptTools)
+
+class QAction;
+class QScriptEngine;
+class QWidget;
+#ifndef QT_NO_MAINWINDOW
+class QMainWindow;
+#endif
+class QMenu;
+class QToolBar;
+
+class QScriptEngineDebuggerPrivate;
+class Q_SCRIPTTOOLS_EXPORT QScriptEngineDebugger : public QObject
+{
+    Q_OBJECT
+public:
+    enum DebuggerWidget {
+        ConsoleWidget,
+        StackWidget,
+        ScriptsWidget,
+        LocalsWidget,
+        CodeWidget,
+        CodeFinderWidget,
+        BreakpointsWidget,
+        DebugOutputWidget,
+        ErrorLogWidget
+    };
+
+    enum DebuggerAction {
+        InterruptAction,
+        ContinueAction,
+        StepIntoAction,
+        StepOverAction,
+        StepOutAction,
+        RunToCursorAction,
+        RunToNewScriptAction,
+        ToggleBreakpointAction,
+        ClearDebugOutputAction,
+        ClearErrorLogAction,
+        ClearConsoleAction,
+        FindInScriptAction,
+        FindNextInScriptAction,
+        FindPreviousInScriptAction,
+        GoToLineAction
+    };
+
+    enum DebuggerState {
+        RunningState,
+        SuspendedState
+    };
+
+    QScriptEngineDebugger(QObject *parent = 0);
+    ~QScriptEngineDebugger();
+
+    void attachTo(QScriptEngine *engine);
+    void detach();
+
+    bool autoShowStandardWindow() const;
+    void setAutoShowStandardWindow(bool autoShow);
+
+#ifndef QT_NO_MAINWINDOW
+    QMainWindow *standardWindow() const;
+#endif
+    QToolBar *createStandardToolBar(QWidget *parent = 0);
+    QMenu *createStandardMenu(QWidget *parent = 0);
+
+    QWidget *widget(DebuggerWidget widget) const;
+    QAction *action(DebuggerAction action) const;
+
+    DebuggerState state() const;
+
+Q_SIGNALS:
+    void evaluationSuspended();
+    void evaluationResumed();
+
+private:
+    Q_DECLARE_PRIVATE(QScriptEngineDebugger)
+    Q_DISABLE_COPY(QScriptEngineDebugger)
+
+    Q_PRIVATE_SLOT(d_func(), void _q_showStandardWindow())
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif
diff --git a/src/scripttools/debugging/qscriptenginedebuggerfrontend.cpp b/src/scripttools/debugging/qscriptenginedebuggerfrontend.cpp
new file mode 100644
index 0000000..cc2bf4e
--- /dev/null
+++ b/src/scripttools/debugging/qscriptenginedebuggerfrontend.cpp
@@ -0,0 +1,335 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptenginedebuggerfrontend_p.h"
+#include "qscriptdebuggerfrontend_p_p.h"
+#include "qscriptdebuggerbackend_p.h"
+#include "qscriptdebuggerbackend_p_p.h"
+#include "qscriptdebuggerevent_p.h"
+#include "qscriptdebuggercommandexecutor_p.h"
+#include "qscriptdebuggerresponse_p.h"
+
+#include <QtCore/qcoreapplication.h>
+#include <QtCore/qeventloop.h>
+#include <QtCore/qlist.h>
+#include <QtScript/qscriptvalue.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \class QScriptEngineDebuggerFrontend
+  \since 4.5
+  \internal
+
+  \brief The QScriptEngineDebuggerFrontend class provides an in-process debugger frontend.
+
+  This type of frontend is used when the QScriptEngine being debugged
+  lives in the same process as the debugger.
+
+  Call the attachTo() function to attach to an engine.
+*/
+
+class QScriptDebuggerCommandEvent : public QEvent
+{
+public:
+    QScriptDebuggerCommandEvent(int id, const QScriptDebuggerCommand &command)
+        : QEvent(QEvent::Type(QEvent::User+3)), m_id(id), m_command(command) {}
+    ~QScriptDebuggerCommandEvent() {}
+    int id() const
+        { return m_id; }
+    const QScriptDebuggerCommand &command() const
+        { return m_command; }
+private:
+    int m_id;
+    QScriptDebuggerCommand m_command;
+};
+
+class QScriptDebuggerCommandFinishedEvent : public QEvent
+{
+public:
+    QScriptDebuggerCommandFinishedEvent(int id, const QScriptDebuggerResponse &response)
+        : QEvent(QEvent::Type(QEvent::User+4)), m_id(id), m_response(response) {}
+    ~QScriptDebuggerCommandFinishedEvent() {}
+    int id() const
+        { return m_id; }
+    const QScriptDebuggerResponse &response() const
+        { return m_response; }
+private:
+    int m_id;
+    QScriptDebuggerResponse m_response;
+};
+
+class QScriptEngineDebuggerBackendPrivate;
+class QScriptEngineDebuggerBackend : public QScriptDebuggerBackend
+{
+public:
+    QScriptEngineDebuggerBackend(QScriptEngineDebuggerFrontendPrivate *frontend);
+    ~QScriptEngineDebuggerBackend();
+
+    void processCommand(int id, const QScriptDebuggerCommand &command);
+    void resume();
+
+protected:
+    void event(const QScriptDebuggerEvent &event);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptEngineDebuggerBackend)
+    Q_DISABLE_COPY(QScriptEngineDebuggerBackend)
+};
+
+class QScriptEngineDebuggerBackendPrivate
+    : public QScriptDebuggerBackendPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptEngineDebuggerBackend)
+public:
+    QScriptEngineDebuggerBackendPrivate();
+    ~QScriptEngineDebuggerBackendPrivate();
+
+    bool event(QEvent *e);
+
+    QScriptEngineDebuggerFrontendPrivate *frontend;
+    QList<QEventLoop*> eventLoopPool;
+    QList<QEventLoop*> eventLoopStack;
+};
+
+class QScriptEngineDebuggerFrontendPrivate
+    : public QScriptDebuggerFrontendPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptEngineDebuggerFrontend)
+public:
+    QScriptEngineDebuggerFrontendPrivate();
+    ~QScriptEngineDebuggerFrontendPrivate();
+
+    void postCommandFinished(int id, const QScriptDebuggerResponse &response);
+    bool event(QEvent *e);
+
+    QScriptEngineDebuggerBackend *backend;
+};
+
+QScriptEngineDebuggerBackendPrivate::QScriptEngineDebuggerBackendPrivate()
+{
+    frontend = 0;
+}
+
+QScriptEngineDebuggerBackendPrivate::~QScriptEngineDebuggerBackendPrivate()
+{
+    eventLoopPool << eventLoopStack;
+    eventLoopStack.clear();
+    while (!eventLoopPool.isEmpty()) {
+        QEventLoop *eventLoop = eventLoopPool.takeFirst();
+        if (eventLoop->isRunning()) {
+            eventLoop->quit();
+            eventLoop->deleteLater();
+        } else {
+            delete eventLoop;
+        }
+    }
+}
+
+/*!
+  \reimp
+*/
+bool QScriptEngineDebuggerBackendPrivate::event(QEvent *e)
+{
+    Q_Q(QScriptEngineDebuggerBackend);
+    if (e->type() == QEvent::User+3) {
+        QScriptDebuggerCommandEvent *ce = static_cast<QScriptDebuggerCommandEvent*>(e);
+        QScriptDebuggerCommandExecutor *executor = q->commandExecutor();
+        QScriptDebuggerResponse response = executor->execute(q, ce->command());
+        frontend->postCommandFinished(ce->id(), response);
+        return true;
+    }
+    return QScriptDebuggerBackendPrivate::event(e);
+}
+
+/*!
+  \internal
+
+  Creates a new QScriptEngineDebuggerBackend object for the given \a
+  engine.  The back-end will forward events to the given \a frontend.
+*/
+QScriptEngineDebuggerBackend::QScriptEngineDebuggerBackend(
+    QScriptEngineDebuggerFrontendPrivate *frontend)
+    : QScriptDebuggerBackend(*new QScriptEngineDebuggerBackendPrivate)
+{
+    Q_D(QScriptEngineDebuggerBackend);
+    d->frontend = frontend;
+}
+
+QScriptEngineDebuggerBackend::~QScriptEngineDebuggerBackend()
+{
+}
+
+void QScriptEngineDebuggerBackend::processCommand(int id, const QScriptDebuggerCommand &command)
+{
+    Q_D(QScriptEngineDebuggerBackend);
+    d->postEvent(new QScriptDebuggerCommandEvent(id, command));
+}
+
+/*!
+  \reimp
+*/
+void QScriptEngineDebuggerBackend::event(const QScriptDebuggerEvent &event)
+{
+    Q_D(QScriptEngineDebuggerBackend);
+    if (d->eventLoopPool.isEmpty())
+        d->eventLoopPool.append(new QEventLoop());
+    QEventLoop *eventLoop = d->eventLoopPool.takeFirst();
+    Q_ASSERT(!eventLoop->isRunning());
+    d->eventLoopStack.prepend(eventLoop);
+
+    d->frontend->postEvent(new QScriptDebuggerEventEvent(event));
+
+    // Run an event loop until resume() is called.
+    // This effectively stalls script execution and makes it possible
+    // for the debugger to inspect the execution state in the meantime.
+    eventLoop->exec();
+
+    if (!d->eventLoopStack.isEmpty()) {
+        // the event loop was quit directly (i.e. not via resume())
+        d->eventLoopStack.takeFirst();
+    }
+    d->eventLoopPool.append(eventLoop);
+    doPendingEvaluate(/*postEvent=*/false);
+}
+
+/*!
+  \reimp
+*/
+void QScriptEngineDebuggerBackend::resume()
+{
+    Q_D(QScriptEngineDebuggerBackend);
+    // quitting the event loops will cause event() to return (see above)
+    while (!d->eventLoopStack.isEmpty()) {
+        QEventLoop *eventLoop = d->eventLoopStack.takeFirst();
+        if (eventLoop->isRunning())
+            eventLoop->quit();
+    }
+}
+
+QScriptEngineDebuggerFrontendPrivate::QScriptEngineDebuggerFrontendPrivate()
+{
+    backend = 0;
+}
+
+QScriptEngineDebuggerFrontendPrivate::~QScriptEngineDebuggerFrontendPrivate()
+{
+    delete backend;
+}
+
+void QScriptEngineDebuggerFrontendPrivate::postCommandFinished(
+    int id, const QScriptDebuggerResponse &response)
+{
+    postEvent(new QScriptDebuggerCommandFinishedEvent(id, response));
+}
+
+/*!
+  \reimp
+*/
+bool QScriptEngineDebuggerFrontendPrivate::event(QEvent *e)
+{
+    Q_Q(QScriptEngineDebuggerFrontend);
+    if (e->type() == QEvent::User+4) {
+        QScriptDebuggerCommandFinishedEvent *fe = static_cast<QScriptDebuggerCommandFinishedEvent*>(e);
+        q->notifyCommandFinished(fe->id(), fe->response());
+        return true;
+    }
+    return QScriptDebuggerFrontendPrivate::event(e);
+}
+
+QScriptEngineDebuggerFrontend::QScriptEngineDebuggerFrontend()
+    : QScriptDebuggerFrontend(*new QScriptEngineDebuggerFrontendPrivate)
+{
+}
+
+QScriptEngineDebuggerFrontend::~QScriptEngineDebuggerFrontend()
+{
+    detach();
+}
+
+/*!
+  Attaches this front-end to the given \a engine.
+*/
+void QScriptEngineDebuggerFrontend::attachTo(QScriptEngine *engine)
+{
+    Q_D(QScriptEngineDebuggerFrontend);
+    if (d->backend)
+        d->backend->detach();
+    else
+        d->backend = new QScriptEngineDebuggerBackend(d);
+    d->backend->attachTo(engine);
+}
+
+/*!
+  Detaches this front-end from the current script engine.
+*/
+void QScriptEngineDebuggerFrontend::detach()
+{
+    Q_D(QScriptEngineDebuggerFrontend);
+    if (d->backend)
+        d->backend->detach();
+}
+
+QScriptValue QScriptEngineDebuggerFrontend::traceFunction() const
+{
+    Q_D(const QScriptEngineDebuggerFrontend);
+    if (d->backend)
+        d->backend->traceFunction();
+    return QScriptValue();
+}
+
+QScriptDebuggerBackend *QScriptEngineDebuggerFrontend::backend() const
+{
+    Q_D(const QScriptEngineDebuggerFrontend);
+    return d->backend;
+}
+
+/*!
+  \internal
+*/
+void QScriptEngineDebuggerFrontend::processCommand(int id, const QScriptDebuggerCommand &command)
+{
+    Q_D(QScriptEngineDebuggerFrontend);
+    Q_ASSERT(d->backend != 0);
+    d->backend->processCommand(id, command);
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptenginedebuggerfrontend_p.h b/src/scripttools/debugging/qscriptenginedebuggerfrontend_p.h
new file mode 100644
index 0000000..edc789d
--- /dev/null
+++ b/src/scripttools/debugging/qscriptenginedebuggerfrontend_p.h
@@ -0,0 +1,89 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTENGINEDEBUGGERFRONTEND_P_H
+#define QSCRIPTENGINEDEBUGGERFRONTEND_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscriptdebuggerfrontend_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptEngine;
+class QScriptValue;
+class QScriptDebuggerBackend;
+
+class QScriptEngineDebuggerFrontendPrivate;
+class Q_AUTOTEST_EXPORT QScriptEngineDebuggerFrontend
+    : public QScriptDebuggerFrontend
+{
+public:
+    QScriptEngineDebuggerFrontend();
+    ~QScriptEngineDebuggerFrontend();
+
+    void attachTo(QScriptEngine *engine);
+    void detach();
+
+    QScriptValue traceFunction() const;
+
+    QScriptDebuggerBackend *backend() const;
+
+protected:
+    void processCommand(int id, const QScriptDebuggerCommand &command);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptEngineDebuggerFrontend)
+    Q_DISABLE_COPY(QScriptEngineDebuggerFrontend)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscripterrorlogwidget.cpp b/src/scripttools/debugging/qscripterrorlogwidget.cpp
new file mode 100644
index 0000000..904cb90
--- /dev/null
+++ b/src/scripttools/debugging/qscripterrorlogwidget.cpp
@@ -0,0 +1,135 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscripterrorlogwidget_p.h"
+#include "qscripterrorlogwidgetinterface_p_p.h"
+
+#include <QtCore/qdatetime.h>
+#include <QtGui/qboxlayout.h>
+#include <QtGui/qtextedit.h>
+#include <QtGui/qscrollbar.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace {
+
+class QScriptErrorLogWidgetOutputEdit : public QTextEdit
+{
+public:
+    QScriptErrorLogWidgetOutputEdit(QWidget *parent = 0)
+        : QTextEdit(parent)
+    {
+        setReadOnly(true);
+//        setFocusPolicy(Qt::NoFocus);
+        document()->setMaximumBlockCount(255);
+    }
+
+    void scrollToBottom()
+    {
+        QScrollBar *bar = verticalScrollBar();
+        bar->setValue(bar->maximum());
+    }
+};
+
+} // namespace
+
+class QScriptErrorLogWidgetPrivate
+    : public QScriptErrorLogWidgetInterfacePrivate
+{
+    Q_DECLARE_PUBLIC(QScriptErrorLogWidget)
+public:
+    QScriptErrorLogWidgetPrivate();
+    ~QScriptErrorLogWidgetPrivate();
+
+    QScriptErrorLogWidgetOutputEdit *outputEdit;
+};
+
+QScriptErrorLogWidgetPrivate::QScriptErrorLogWidgetPrivate()
+{
+}
+
+QScriptErrorLogWidgetPrivate::~QScriptErrorLogWidgetPrivate()
+{
+}
+
+QScriptErrorLogWidget::QScriptErrorLogWidget(QWidget *parent)
+    : QScriptErrorLogWidgetInterface(*new QScriptErrorLogWidgetPrivate, parent, 0)
+{
+    Q_D(QScriptErrorLogWidget);
+    d->outputEdit = new QScriptErrorLogWidgetOutputEdit();
+    QVBoxLayout *vbox = new QVBoxLayout(this);
+    vbox->setMargin(0);
+    vbox->setSpacing(0);
+    vbox->addWidget(d->outputEdit);
+
+//    QString sheet = QString::fromLatin1("font-size: 14px; font-family: \"Monospace\";");
+//    setStyleSheet(sheet);
+}
+
+QScriptErrorLogWidget::~QScriptErrorLogWidget()
+{
+}
+
+void QScriptErrorLogWidget::message(
+    QtMsgType type, const QString &text, const QString &fileName,
+    int lineNumber, int columnNumber, const QVariant &/*data*/)
+{
+    // ### we need the error message rather than Error.toString()
+    Q_UNUSED(type);
+    Q_UNUSED(fileName);
+    Q_UNUSED(lineNumber);
+    Q_UNUSED(columnNumber);
+    Q_D(QScriptErrorLogWidget);
+    QString html;
+    html.append(QString::fromLatin1("<b>%0</b> %1<br>")
+                .arg(QDateTime::currentDateTime().toString()).arg(Qt::escape(text)));
+    d->outputEdit->insertHtml(html);
+    d->outputEdit->scrollToBottom();
+}
+
+void QScriptErrorLogWidget::clear()
+{
+    Q_D(QScriptErrorLogWidget);
+    d->outputEdit->clear();
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscripterrorlogwidget_p.h b/src/scripttools/debugging/qscripterrorlogwidget_p.h
new file mode 100644
index 0000000..e0dd00a
--- /dev/null
+++ b/src/scripttools/debugging/qscripterrorlogwidget_p.h
@@ -0,0 +1,83 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTERRORLOGWIDGET_P_H
+#define QSCRIPTERRORLOGWIDGET_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qscripterrorlogwidgetinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptErrorLogWidgetPrivate;
+class Q_AUTOTEST_EXPORT QScriptErrorLogWidget:
+    public QScriptErrorLogWidgetInterface
+{
+    Q_OBJECT
+public:
+    QScriptErrorLogWidget(QWidget *parent = 0);
+    ~QScriptErrorLogWidget();
+
+    void message(QtMsgType type, const QString &text,
+                 const QString &fileName = QString(),
+                 int lineNumber = -1, int columnNumber = -1,
+                 const QVariant &data = QVariant());
+
+    void clear();
+
+private:
+    Q_DECLARE_PRIVATE(QScriptErrorLogWidget)
+    Q_DISABLE_COPY(QScriptErrorLogWidget)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscripterrorlogwidgetinterface.cpp b/src/scripttools/debugging/qscripterrorlogwidgetinterface.cpp
new file mode 100644
index 0000000..869a408
--- /dev/null
+++ b/src/scripttools/debugging/qscripterrorlogwidgetinterface.cpp
@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscripterrorlogwidgetinterface_p.h"
+#include "qscripterrorlogwidgetinterface_p_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QScriptErrorLogWidgetInterfacePrivate::QScriptErrorLogWidgetInterfacePrivate()
+{
+}
+
+QScriptErrorLogWidgetInterfacePrivate::~QScriptErrorLogWidgetInterfacePrivate()
+{
+}
+
+QScriptErrorLogWidgetInterface::~QScriptErrorLogWidgetInterface()
+{
+}
+
+QScriptErrorLogWidgetInterface::QScriptErrorLogWidgetInterface(
+    QScriptErrorLogWidgetInterfacePrivate &dd,
+    QWidget *parent, Qt::WindowFlags flags)
+    : QWidget(dd, parent, flags)
+{
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscripterrorlogwidgetinterface_p.h b/src/scripttools/debugging/qscripterrorlogwidgetinterface_p.h
new file mode 100644
index 0000000..9a502df
--- /dev/null
+++ b/src/scripttools/debugging/qscripterrorlogwidgetinterface_p.h
@@ -0,0 +1,84 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTERRORLOGWIDGETINTERFACE_P_H
+#define QSCRIPTERRORLOGWIDGETINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/qwidget.h>
+
+#include "qscriptmessagehandlerinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptErrorLogWidgetInterfacePrivate;
+class Q_AUTOTEST_EXPORT QScriptErrorLogWidgetInterface:
+    public QWidget,
+    public QScriptMessageHandlerInterface
+{
+    Q_OBJECT
+public:
+    ~QScriptErrorLogWidgetInterface();
+
+    virtual void clear() = 0;
+
+protected:
+    QScriptErrorLogWidgetInterface(QScriptErrorLogWidgetInterfacePrivate &dd,
+                                   QWidget *parent, Qt::WindowFlags flags);
+
+private:
+    Q_DECLARE_PRIVATE(QScriptErrorLogWidgetInterface)
+    Q_DISABLE_COPY(QScriptErrorLogWidgetInterface)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscripterrorlogwidgetinterface_p_p.h b/src/scripttools/debugging/qscripterrorlogwidgetinterface_p_p.h
new file mode 100644
index 0000000..b9c3c02
--- /dev/null
+++ b/src/scripttools/debugging/qscripterrorlogwidgetinterface_p_p.h
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTERRORLOGWIDGETINTERFACE_P_P_H
+#define QSCRIPTERRORLOGWIDGETINTERFACE_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qwidget_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptErrorLogWidgetInterface;
+class QScriptErrorLogWidgetInterfacePrivate
+    : public QWidgetPrivate
+{
+    Q_DECLARE_PUBLIC(QScriptErrorLogWidgetInterface)
+public:
+    QScriptErrorLogWidgetInterfacePrivate();
+    ~QScriptErrorLogWidgetInterfacePrivate();
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptmessagehandlerinterface_p.h b/src/scripttools/debugging/qscriptmessagehandlerinterface_p.h
new file mode 100644
index 0000000..6f76b9f
--- /dev/null
+++ b/src/scripttools/debugging/qscriptmessagehandlerinterface_p.h
@@ -0,0 +1,75 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTMESSAGEHANDLERINTERFACE_P_H
+#define QSCRIPTMESSAGEHANDLERINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+#include <QtCore/qvariant.h>
+
+QT_BEGIN_NAMESPACE
+
+class Q_AUTOTEST_EXPORT QScriptMessageHandlerInterface
+{
+public:
+    virtual ~QScriptMessageHandlerInterface() {}
+
+    virtual void message(QtMsgType type, const QString &text,
+                         const QString &fileName = QString(),
+                         int lineNumber = -1, int columnNumber = -1,
+                         const QVariant &data = QVariant()) = 0;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptobjectsnapshot.cpp b/src/scripttools/debugging/qscriptobjectsnapshot.cpp
new file mode 100644
index 0000000..f54a32b
--- /dev/null
+++ b/src/scripttools/debugging/qscriptobjectsnapshot.cpp
@@ -0,0 +1,146 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptobjectsnapshot_p.h"
+
+#include <QtCore/qmap.h>
+#include <QtCore/qset.h>
+#include <QtCore/qvector.h>
+#include <QtCore/qnumeric.h>
+#include <QtScript/qscriptvalueiterator.h>
+
+QT_BEGIN_NAMESPACE
+
+QScriptObjectSnapshot::QScriptObjectSnapshot()
+{
+}
+
+QScriptObjectSnapshot::~QScriptObjectSnapshot()
+{
+}
+
+static bool _q_equal(const QScriptValue &v1, const QScriptValue &v2)
+{
+    if (v1.strictlyEquals(v2))
+        return true;
+    if (v1.isNumber() && v2.isNumber() && qIsNaN(v1.toNumber()) && qIsNaN(v2.toNumber()))
+        return true;
+    return false;
+}
+
+QScriptObjectSnapshot::Delta QScriptObjectSnapshot::capture(const QScriptValue &object)
+{
+    Delta result;
+    QMap<QString, QScriptValueProperty> currProps;
+    QHash<QString, int> propertyNameToIndex;
+    {
+        int i = 0;
+        QScriptValueIterator it(object);
+        while (it.hasNext()) {
+            it.next();
+            QScriptValueProperty prop(it.name(), it.value(), it.flags());
+            currProps.insert(it.name(), prop);
+            propertyNameToIndex.insert(it.name(), i);
+            ++i;
+        }
+        if (object.prototype().isValid()) {
+            QString __proto__ = QString::fromLatin1("__proto__");
+            QScriptValueProperty protoProp(
+                __proto__, object.prototype(),
+                QScriptValue::Undeletable | QScriptValue::ReadOnly);
+            currProps.insert(__proto__, protoProp);
+            propertyNameToIndex.insert(__proto__, i);
+            ++i;
+        }
+    }
+
+    QSet<QString> prevSet;
+    for (int i = 0; i < m_properties.size(); ++i)
+        prevSet.insert(m_properties.at(i).name());
+    QSet<QString> currSet = currProps.keys().toSet();
+    QSet<QString> removedProperties = prevSet - currSet;
+    QSet<QString> addedProperties = currSet - prevSet;
+    QSet<QString> maybeChangedProperties = currSet & prevSet;
+
+    {
+        QMap<int, QScriptValueProperty> am;
+        QSet<QString>::const_iterator it;
+        for (it = addedProperties.constBegin(); it != addedProperties.constEnd(); ++it) {
+            int idx = propertyNameToIndex[*it];
+            am[idx] = currProps[*it];
+        }
+        result.addedProperties = am.values();
+    }
+
+    {
+        QSet<QString>::const_iterator it;
+        for (it = maybeChangedProperties.constBegin(); it != maybeChangedProperties.constEnd(); ++it) {
+            const QScriptValueProperty &p1 = currProps[*it];
+            const QScriptValueProperty &p2 = findProperty(*it);
+            if (!_q_equal(p1.value(), p2.value())
+                || (p1.flags() != p2.flags())) {
+                result.changedProperties.append(p1);
+            }
+        }
+    }
+
+    result.removedProperties = removedProperties.toList();
+
+    m_properties = currProps.values();
+
+    return result;
+}
+
+QScriptValueProperty QScriptObjectSnapshot::findProperty(const QString &name) const
+{
+    for (int i = 0; i < m_properties.size(); ++i) {
+        if (m_properties.at(i).name() == name)
+            return m_properties.at(i);
+    }
+    return QScriptValueProperty();
+}
+
+QScriptValuePropertyList QScriptObjectSnapshot::properties() const
+{
+    return m_properties;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptobjectsnapshot_p.h b/src/scripttools/debugging/qscriptobjectsnapshot_p.h
new file mode 100644
index 0000000..99cef31
--- /dev/null
+++ b/src/scripttools/debugging/qscriptobjectsnapshot_p.h
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTOBJECTSNAPSHOT_P_H
+#define QSCRIPTOBJECTSNAPSHOT_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+#include <QtCore/qstringlist.h>
+#include "qscriptvalueproperty_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class Q_AUTOTEST_EXPORT QScriptObjectSnapshot
+{
+public:
+    struct Delta {
+        QStringList removedProperties;
+        QScriptValuePropertyList changedProperties;
+        QScriptValuePropertyList addedProperties;
+    };
+
+    QScriptObjectSnapshot();
+    ~QScriptObjectSnapshot();
+
+    Delta capture(const QScriptValue &object);
+    QScriptValuePropertyList properties() const;
+
+    QScriptValueProperty findProperty(const QString &name) const;
+
+private:
+    QScriptValuePropertyList m_properties;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptscriptdata.cpp b/src/scripttools/debugging/qscriptscriptdata.cpp
new file mode 100644
index 0000000..dde1f59
--- /dev/null
+++ b/src/scripttools/debugging/qscriptscriptdata.cpp
@@ -0,0 +1,212 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptscriptdata_p.h"
+
+#include <QtCore/qdatastream.h>
+#include <QtCore/qstring.h>
+#include <QtCore/qstringlist.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \since 4.5
+  \class QScriptScriptData
+  \internal
+
+  \brief The QScriptScriptData class holds data associated with a script.
+*/
+
+class QScriptScriptDataPrivate
+{
+public:
+    QScriptScriptDataPrivate();
+    ~QScriptScriptDataPrivate();
+
+    QString contents;
+    QString fileName;
+    int baseLineNumber;
+    QDateTime timeStamp;
+
+    QBasicAtomicInt ref;
+};
+
+QScriptScriptDataPrivate::QScriptScriptDataPrivate()
+{
+    ref = 0;
+}
+
+QScriptScriptDataPrivate::~QScriptScriptDataPrivate()
+{
+}
+
+QScriptScriptData::QScriptScriptData()
+    : d_ptr(0)
+{
+}
+
+QScriptScriptData::QScriptScriptData(const QString &contents, const QString &fileName,
+                                     int baseLineNumber, const QDateTime &timeStamp)
+    : d_ptr(new QScriptScriptDataPrivate)
+{
+    d_ptr->contents = contents;
+    d_ptr->fileName = fileName;
+    d_ptr->baseLineNumber = baseLineNumber;
+    if (timeStamp.isValid())
+        d_ptr->timeStamp = timeStamp;
+    else
+        d_ptr->timeStamp = QDateTime::currentDateTime();
+    d_ptr->ref.ref();
+}
+
+QScriptScriptData::QScriptScriptData(const QScriptScriptData &other)
+    : d_ptr(other.d_ptr.data())
+{
+    if (d_ptr)
+        d_ptr->ref.ref();
+}
+
+QScriptScriptData::~QScriptScriptData()
+{
+}
+
+QScriptScriptData &QScriptScriptData::operator=(const QScriptScriptData &other)
+{
+    d_ptr.assign(other.d_ptr.data());
+    return *this;
+}
+
+QString QScriptScriptData::contents() const
+{
+    Q_D(const QScriptScriptData);
+    if (!d)
+        return QString();
+    return d->contents;
+}
+
+QStringList QScriptScriptData::lines(int startLineNumber, int count) const
+{
+    Q_D(const QScriptScriptData);
+    if (!d)
+        return QStringList();
+    QStringList allLines = d->contents.split(QLatin1Char('\n'));
+    return allLines.mid(qMax(0, startLineNumber - d->baseLineNumber), count);
+}
+
+QString QScriptScriptData::fileName() const
+{
+    Q_D(const QScriptScriptData);
+    if (!d)
+        return QString();
+    return d->fileName;
+}
+
+int QScriptScriptData::baseLineNumber() const
+{
+    Q_D(const QScriptScriptData);
+    if (!d)
+        return -1;
+    return d->baseLineNumber;
+}
+
+QDateTime QScriptScriptData::timeStamp() const
+{
+    Q_D(const QScriptScriptData);
+    if (!d)
+        return QDateTime();
+    return d->timeStamp;
+}
+
+bool QScriptScriptData::isValid() const
+{
+    Q_D(const QScriptScriptData);
+    return (d != 0);
+}
+
+bool QScriptScriptData::operator==(const QScriptScriptData &other) const
+{
+    Q_D(const QScriptScriptData);
+    const QScriptScriptDataPrivate *od = other.d_func();
+    if (d == od)
+        return true;
+    if (!d || !od)
+        return false;
+    return ((d->contents == od->contents)
+            && (d->fileName == od->fileName)
+            && (d->baseLineNumber == od->baseLineNumber));
+}
+
+bool QScriptScriptData::operator!=(const QScriptScriptData &other) const
+{
+    return !(*this == other);
+}
+
+QDataStream &operator<<(QDataStream &out, const QScriptScriptData &data)
+{
+    const QScriptScriptDataPrivate *d = data.d_ptr.data();
+    if (d) {
+        out << d->contents;
+        out << d->fileName;
+        out << qint32(d->baseLineNumber);
+    } else {
+        out << QString();
+        out << QString();
+        out << qint32(0);
+    }
+    return out;
+}
+
+QDataStream &operator>>(QDataStream &in, QScriptScriptData &data)
+{
+    if (!data.d_ptr) {
+        data.d_ptr.reset(new QScriptScriptDataPrivate());
+        data.d_ptr->ref.ref();
+    }
+    QScriptScriptDataPrivate *d = data.d_ptr.data();
+    in >> d->contents;
+    in >> d->fileName;
+    qint32 ln;
+    in >> ln;
+    d->baseLineNumber = ln;
+    return in;
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptscriptdata_p.h b/src/scripttools/debugging/qscriptscriptdata_p.h
new file mode 100644
index 0000000..1f879ce
--- /dev/null
+++ b/src/scripttools/debugging/qscriptscriptdata_p.h
@@ -0,0 +1,106 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTSCRIPTDATA_P_H
+#define QSCRIPTSCRIPTDATA_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+#include <QtCore/private/qscopedpointer_p.h>
+#include <QtCore/qdatetime.h>
+#include <QtCore/qmap.h>
+
+QT_BEGIN_NAMESPACE
+
+class QDataStream;
+class QString;
+class QStringList;
+
+class QScriptScriptDataPrivate;
+class Q_AUTOTEST_EXPORT QScriptScriptData
+{
+public:
+    friend Q_AUTOTEST_EXPORT QDataStream &operator<<(QDataStream &, const QScriptScriptData &);
+    friend Q_AUTOTEST_EXPORT QDataStream &operator>>(QDataStream &, QScriptScriptData &);
+
+    QScriptScriptData();
+    QScriptScriptData(const QString &contents, const QString &fileName,
+                      int baseLineNumber, const QDateTime &timeStamp = QDateTime());
+    QScriptScriptData(const QScriptScriptData &other);
+    ~QScriptScriptData();
+
+    QString contents() const;
+    QStringList lines(int startLineNumber, int count) const;
+    QString fileName() const;
+    int baseLineNumber() const;
+    QDateTime timeStamp() const;
+
+    bool isValid() const;
+
+    QScriptScriptData &operator=(const QScriptScriptData &other);
+
+    bool operator==(const QScriptScriptData &other) const;
+    bool operator!=(const QScriptScriptData &other) const;
+
+private:
+    QScopedSharedPointer<QScriptScriptDataPrivate> d_ptr;
+
+    Q_DECLARE_PRIVATE(QScriptScriptData)
+};
+
+typedef QMap<qint64, QScriptScriptData> QScriptScriptMap;
+
+Q_AUTOTEST_EXPORT QDataStream &operator<<(QDataStream &, const QScriptScriptData &);
+Q_AUTOTEST_EXPORT QDataStream &operator>>(QDataStream &, QScriptScriptData &);
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptstdmessagehandler.cpp b/src/scripttools/debugging/qscriptstdmessagehandler.cpp
new file mode 100644
index 0000000..9d5cb21
--- /dev/null
+++ b/src/scripttools/debugging/qscriptstdmessagehandler.cpp
@@ -0,0 +1,99 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptstdmessagehandler_p.h"
+#include <stdio.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \since 4.5
+  \class QScriptStdMessageHandler
+  \internal
+
+  \brief The QScriptStdMessageHandler class implements a message handler that writes to standard output.
+*/
+
+class QScriptStdMessageHandlerPrivate
+{
+public:
+    QScriptStdMessageHandlerPrivate() {}
+    ~QScriptStdMessageHandlerPrivate() {}
+};
+
+QScriptStdMessageHandler::QScriptStdMessageHandler()
+    : d_ptr(new QScriptStdMessageHandlerPrivate)
+{
+}
+
+QScriptStdMessageHandler::~QScriptStdMessageHandler()
+{
+}
+
+void QScriptStdMessageHandler::message(QtMsgType type, const QString &text,
+                                       const QString &fileName,
+                                       int lineNumber, int columnNumber,
+                                       const QVariant &/*data*/)
+{
+    QString msg;
+    if (!fileName.isEmpty() || (lineNumber != -1)) {
+        if (!fileName.isEmpty())
+            msg.append(fileName);
+        else
+            msg.append(QLatin1String("<noname>"));
+        if (lineNumber != -1) {
+            msg.append(QLatin1Char(':'));
+            msg.append(QString::number(lineNumber));
+            if (columnNumber != -1) {
+                msg.append(QLatin1Char(':'));
+                msg.append(QString::number(columnNumber));
+            }
+        }
+        msg.append(QLatin1String(": "));
+    }
+    msg.append(text);
+
+    FILE *fp = (type == QtDebugMsg) ? stdout : stderr;
+    fprintf(fp, "%s\n", msg.toLatin1().constData());
+    fflush(fp);
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptstdmessagehandler_p.h b/src/scripttools/debugging/qscriptstdmessagehandler_p.h
new file mode 100644
index 0000000..569ef55
--- /dev/null
+++ b/src/scripttools/debugging/qscriptstdmessagehandler_p.h
@@ -0,0 +1,85 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTSTDMESSAGEHANDLER_P_H
+#define QSCRIPTSTDMESSAGEHANDLER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qscopedpointer.h>
+
+#include "qscriptmessagehandlerinterface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QScriptStdMessageHandlerPrivate;
+class Q_AUTOTEST_EXPORT QScriptStdMessageHandler
+    : public QScriptMessageHandlerInterface
+{
+public:
+    QScriptStdMessageHandler();
+    ~QScriptStdMessageHandler();
+
+    void message(QtMsgType type, const QString &text,
+                 const QString &fileName = QString(),
+                 int lineNumber = -1, int columnNumber = -1,
+                 const QVariant &data = QVariant());
+
+private:
+    QScopedPointer<QScriptStdMessageHandlerPrivate> d_ptr;
+
+private:
+    Q_DECLARE_PRIVATE(QScriptStdMessageHandler)
+    Q_DISABLE_COPY(QScriptStdMessageHandler)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptsyntaxhighlighter.cpp b/src/scripttools/debugging/qscriptsyntaxhighlighter.cpp
new file mode 100644
index 0000000..3d2ee65
--- /dev/null
+++ b/src/scripttools/debugging/qscriptsyntaxhighlighter.cpp
@@ -0,0 +1,544 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptsyntaxhighlighter_p.h"
+#include "private/qfunctions_p.h"
+
+#ifndef QT_NO_SYNTAXHIGHLIGHTER
+
+QT_BEGIN_NAMESPACE
+
+enum ScriptIds {
+    Comment = 1,
+    Number,
+    String,
+    Type,
+    Keyword,
+    PreProcessor,
+    Label
+};
+
+#define MAX_KEYWORD 63
+static const char *const keywords[MAX_KEYWORD] = {
+    "Infinity",
+    "NaN",
+    "abstract",
+    "boolean",
+    "break",
+    "byte",
+    "case",
+    "catch",
+    "char",
+    "class",
+    "const",
+    "constructor",
+    "continue",
+    "debugger",
+    "default",
+    "delete",
+    "do",
+    "double",
+    "else",
+    "enum",
+    "export",
+    "extends",
+    "false",
+    "final",
+    "finally",
+    "float",
+    "for",
+    "function",
+    "goto",
+    "if",
+    "implements",
+    "import",
+    "in",
+    "instanceof",
+    "int",
+    "interface",
+    "long",
+    "native",
+    "new",
+    "package",
+    "private",
+    "protected",
+    "public",
+    "return",
+    "short",
+    "static",
+    "super",
+    "switch",
+    "synchronized",
+    "this",
+    "throw",
+    "throws",
+    "transient",
+    "true",
+    "try",
+    "typeof",
+    "undefined",
+    "var",
+    "void",
+    "volatile",
+    "while",
+    "with",    // end of array
+    0
+};
+
+struct KeywordHelper
+{
+    inline KeywordHelper(const QString &word) : needle(word) {}
+    const QString needle;
+};
+
+Q_STATIC_GLOBAL_OPERATOR bool operator<(const KeywordHelper &helper, const char *kw)
+{
+    return helper.needle < QLatin1String(kw);
+}
+
+Q_STATIC_GLOBAL_OPERATOR bool operator<(const char *kw, const KeywordHelper &helper)
+{
+    return QLatin1String(kw) < helper.needle;
+}
+
+static bool isKeyword(const QString &word)
+{
+    const char * const *start = &keywords[0];
+    const char * const *end = &keywords[MAX_KEYWORD - 1];
+    const char * const *kw = qBinaryFind(start, end, KeywordHelper(word));
+
+    return kw != end;
+}
+
+QScriptSyntaxHighlighter::QScriptSyntaxHighlighter(QTextDocument *document)
+    : QSyntaxHighlighter(document)
+{
+
+    m_formats[ScriptNumberFormat].setForeground(Qt::darkBlue);
+    m_formats[ScriptStringFormat].setForeground(Qt::darkGreen);
+    m_formats[ScriptTypeFormat].setForeground(Qt::darkMagenta);
+    m_formats[ScriptKeywordFormat].setForeground(Qt::darkYellow);
+    m_formats[ScriptPreprocessorFormat].setForeground(Qt::darkBlue);
+    m_formats[ScriptLabelFormat].setForeground(Qt::darkRed);
+    m_formats[ScriptCommentFormat].setForeground(Qt::darkGreen);
+    m_formats[ScriptCommentFormat].setFontItalic(true);
+}
+
+QScriptSyntaxHighlighter::~QScriptSyntaxHighlighter()
+{
+}
+
+void QScriptSyntaxHighlighter::highlightBlock(const QString &text)
+{
+
+    // states
+    enum States { StateStandard, StateCommentStart1, StateCCommentStart2,
+                  StateScriptCommentStart2, StateCComment, StateScriptComment, StateCCommentEnd1,
+                  StateCCommentEnd2, StateStringStart, StateString, StateStringEnd,
+                  StateString2Start, StateString2, StateString2End,
+                  StateNumber, StatePreProcessor, NumStates  };
+
+    // tokens
+    enum Tokens { InputAlpha, InputNumber, InputAsterix, InputSlash, InputParen,
+                  InputSpace, InputHash, InputQuotation, InputApostrophe, InputSep, NumTokens };
+
+    static uchar table[NumStates][NumTokens] = {
+        { StateStandard,      StateNumber,     StateStandard,       StateCommentStart1,    StateStandard,   StateStandard,   StatePreProcessor, StateStringStart, StateString2Start, StateStandard }, // StateStandard
+        { StateStandard,      StateNumber,   StateCCommentStart2, StateScriptCommentStart2, StateStandard,   StateStandard,   StatePreProcessor, StateStringStart, StateString2Start, StateStandard }, // StateCommentStart1
+        { StateCComment,      StateCComment,   StateCCommentEnd1,   StateCComment,         StateCComment,   StateCComment,   StateCComment,     StateCComment,    StateCComment,     StateCComment }, // StateCCommentStart2
+        { StateScriptComment,    StateScriptComment, StateScriptComment,     StateScriptComment,       StateScriptComment, StateScriptComment, StateScriptComment,   StateScriptComment,  StateScriptComment,   StateScriptComment }, // ScriptCommentStart2
+        { StateCComment,      StateCComment,   StateCCommentEnd1,   StateCComment,         StateCComment,   StateCComment,   StateCComment,     StateCComment,    StateCComment,     StateCComment }, // StateCComment
+        { StateScriptComment,    StateScriptComment, StateScriptComment,     StateScriptComment,       StateScriptComment, StateScriptComment, StateScriptComment,   StateScriptComment,  StateScriptComment,   StateScriptComment }, // StateScriptComment
+        { StateCComment,      StateCComment,   StateCCommentEnd1,   StateCCommentEnd2,     StateCComment,   StateCComment,   StateCComment,     StateCComment,    StateCComment,     StateCComment }, // StateCCommentEnd1
+        { StateStandard,      StateNumber,     StateStandard,       StateCommentStart1,    StateStandard,   StateStandard,   StatePreProcessor, StateStringStart, StateString2Start, StateStandard }, // StateCCommentEnd2
+        { StateString,        StateString,     StateString,         StateString,           StateString,     StateString,     StateString,       StateStringEnd,   StateString,       StateString }, // StateStringStart
+        { StateString,        StateString,     StateString,         StateString,           StateString,     StateString,     StateString,       StateStringEnd,   StateString,       StateString }, // StateString
+        { StateStandard,      StateStandard,   StateStandard,       StateCommentStart1,    StateStandard,   StateStandard,   StatePreProcessor, StateStringStart, StateString2Start, StateStandard }, // StateStringEnd
+        { StateString2,       StateString2,    StateString2,        StateString2,          StateString2,    StateString2,    StateString2,      StateString2,     StateString2End,   StateString2 }, // StateString2Start
+        { StateString2,       StateString2,    StateString2,        StateString2,          StateString2,    StateString2,    StateString2,      StateString2,     StateString2End,   StateString2 }, // StateString2
+        { StateStandard,      StateStandard,   StateStandard,       StateCommentStart1,    StateStandard,   StateStandard,   StatePreProcessor, StateStringStart, StateString2Start, StateStandard }, // StateString2End
+        { StateNumber,        StateNumber,     StateStandard,       StateCommentStart1,    StateStandard,   StateStandard,   StatePreProcessor, StateStringStart, StateString2Start, StateStandard }, // StateNumber
+        { StatePreProcessor,  StateStandard,   StateStandard,       StateCommentStart1,    StateStandard,   StateStandard,   StatePreProcessor, StateStringStart, StateString2Start, StateStandard } // StatePreProcessor
+    };
+
+    QString buffer;
+    buffer.reserve(text.length());
+
+    QTextCharFormat emptyFormat;
+
+    int state = StateStandard;
+    int braceDepth = 0;
+    const int previousState = previousBlockState();
+    if (previousState != -1) {
+        state = previousState & 0xff;
+        braceDepth = previousState >> 8;
+    }
+
+    if (text.isEmpty()) {
+        setCurrentBlockState(previousState);
+#if 0
+        TextEditDocumentLayout::clearParentheses(currentBlock());
+#endif
+        return;
+    }
+#if 0
+    Parentheses parentheses;
+    parentheses.reserve(20); // assume wizard level ;-)
+#endif
+    int input = -1;
+    int i = 0;
+    bool lastWasBackSlash = false;
+    bool makeLastStandard = false;
+
+    static const QString alphabeth = QLatin1String("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");
+    static const QString mathChars = QLatin1String("xXeE");
+    static const QString numbers = QLatin1String("0123456789");
+    bool questionMark = false;
+    QChar lastChar;
+
+    int firstNonSpace = -1;
+    int lastNonSpace = -1;
+
+    for (;;) {
+        const QChar c = text.at(i);
+
+        if (lastWasBackSlash) {
+            input = InputSep;
+        } else {
+            switch (c.toAscii()) {
+                case '*':
+                    input = InputAsterix;
+                    break;
+                case '/':
+                    input = InputSlash;
+                    break;
+                case '{':
+                    braceDepth++;
+                    // fall through
+                case '(': case '[':
+                    input = InputParen;
+                    switch (state) {
+                    case StateStandard:
+                    case StateNumber:
+                    case StatePreProcessor:
+                    case StateCCommentEnd2:
+                    case StateCCommentEnd1:
+                    case StateString2End:
+                    case StateStringEnd:
+//                        parentheses.push_back(Parenthesis(Parenthesis::Opened, c, i));
+                        break;
+                    default:
+                        break;
+                    }
+                    break;
+                case '}':
+                    if (--braceDepth < 0)
+                        braceDepth = 0;
+                    // fall through
+                case ')': case ']':
+                    input = InputParen;
+                    switch (state) {
+                    case StateStandard:
+                    case StateNumber:
+                    case StatePreProcessor:
+                    case StateCCommentEnd2:
+                    case StateCCommentEnd1:
+                    case StateString2End:
+                    case StateStringEnd:
+//                        parentheses.push_back(Parenthesis(Parenthesis::Closed, c, i));
+                        break;
+                    default:
+                        break;
+                    }
+                    break;
+                case '#':
+                    input = InputHash;
+                    break;
+                case '"':
+                    input = InputQuotation;
+                    break;
+                case '\'':
+                    input = InputApostrophe;
+                    break;
+                case ' ':
+                    input = InputSpace;
+                    break;
+                case '1': case '2': case '3': case '4': case '5':
+                case '6': case '7': case '8': case '9': case '0':
+                    if (alphabeth.contains(lastChar)
+                        && (!mathChars.contains(lastChar) || !numbers.contains(text.at(i - 1)))
+                       ) {
+                        input = InputAlpha;
+                    } else {
+                        if (input == InputAlpha && numbers.contains(lastChar))
+                            input = InputAlpha;
+                        else
+                            input = InputNumber;
+                    }
+                    break;
+                case ':': {
+                              input = InputAlpha;
+                              const QChar colon = QLatin1Char(':');
+                              if (state == StateStandard && !questionMark && lastChar != colon) {
+                                  const QChar nextChar = i < text.length() - 1 ?  text.at(i + 1) : QLatin1Char(' ');
+                                  if (nextChar != colon)
+                                      for (int j = 0; j < i; ++j) {
+                                          if (format(j) == emptyFormat )
+                                              setFormat(j, 1, m_formats[ScriptLabelFormat]);
+                                      }
+                              }
+                          } break;
+                default:
+                    if (!questionMark && c == QLatin1Char('?'))
+                        questionMark = true;
+                    if (c.isLetter() || c == QLatin1Char('_'))
+                        input = InputAlpha;
+                    else
+                      input = InputSep;
+                break;
+            }
+        }
+
+        if (input != InputSpace) {
+            if (firstNonSpace < 0)
+                firstNonSpace = i;
+            lastNonSpace = i;
+        }
+
+        lastWasBackSlash = !lastWasBackSlash && c == QLatin1Char('\\');
+
+        if (input == InputAlpha)
+            buffer += c;
+
+        state = table[state][input];
+
+        switch (state) {
+            case StateStandard: {
+                                    setFormat(i, 1, emptyFormat);
+                                    if (makeLastStandard)
+                                        setFormat(i - 1, 1, emptyFormat);
+                                    makeLastStandard = false;
+                                    if (input != InputAlpha) {
+                                        highlightWord(i, buffer);
+                                        buffer = QString::null;
+                                    }
+                                } break;
+            case StateCommentStart1:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = true;
+                                buffer = QString::null;
+                                break;
+            case StateCCommentStart2:
+                                setFormat(i - 1, 2, m_formats[ScriptCommentFormat]);
+                                makeLastStandard = false;
+//                                parentheses.push_back(Parenthesis(Parenthesis::Opened, QLatin1Char('/'), i-1));
+                                buffer = QString::null;
+                                break;
+            case StateScriptCommentStart2:
+                                setFormat(i - 1, 2, m_formats[ScriptCommentFormat]);
+                                makeLastStandard = false;
+                                buffer = QString::null;
+                                break;
+            case StateCComment:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, m_formats[ScriptCommentFormat]);
+                                buffer = QString::null;
+                                break;
+            case StateScriptComment:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, m_formats[ScriptCommentFormat]);
+                                buffer = QString::null;
+                                break;
+            case StateCCommentEnd1:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, m_formats[ScriptCommentFormat]);
+                                buffer = QString::null;
+                                break;
+            case StateCCommentEnd2:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, m_formats[ScriptCommentFormat]);
+//                                parentheses.push_back(Parenthesis(Parenthesis::Closed, QLatin1Char('/'), i));
+                                buffer = QString::null;
+                                break;
+            case StateStringStart:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, emptyFormat);
+                                buffer = QString::null;
+                                break;
+            case StateString:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, m_formats[ScriptStringFormat]);
+                                buffer = QString::null;
+                                break;
+            case StateStringEnd:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, emptyFormat);
+                                buffer = QString::null;
+                                break;
+            case StateString2Start:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, emptyFormat);
+                                buffer = QString::null;
+                                break;
+            case StateString2:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, m_formats[ScriptStringFormat]);
+                                buffer = QString::null;
+                                break;
+            case StateString2End:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, emptyFormat);
+                                buffer = QString::null;
+                                break;
+            case StateNumber:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, m_formats[ScriptNumberFormat]);
+                                buffer = QString::null;
+                                break;
+            case StatePreProcessor:
+                                if (makeLastStandard)
+                                    setFormat(i - 1, 1, emptyFormat);
+                                makeLastStandard = false;
+                                setFormat(i, 1, m_formats[ScriptPreprocessorFormat]);
+                                buffer = QString::null;
+                                break;
+        }
+
+        lastChar = c;
+        i++;
+        if (i >= text.length()) {
+#if 0
+            if (TextBlockUserData *userData = TextEditDocumentLayout::testUserData(currentBlock())) {
+                userData->setHasClosingCollapse(false);
+                userData->setCollapseMode(TextBlockUserData::NoCollapse);
+            }
+            int collapse = Parenthesis::collapseAtPos(parentheses);
+            if (collapse >= 0) {
+                if (collapse == firstNonSpace)
+                    TextEditDocumentLayout::userData(currentBlock())->setCollapseMode(TextBlockUserData::CollapseThis);
+                else
+                    TextEditDocumentLayout::userData(currentBlock())->setCollapseMode(TextBlockUserData::CollapseAfter);
+            }
+            if (Parenthesis::hasClosingCollapse(parentheses)) {
+                TextEditDocumentLayout::userData(currentBlock())->setHasClosingCollapse(true);
+            }
+#endif
+
+            break;
+        }
+    }
+
+    highlightWord(text.length(), buffer);
+
+    switch (state) {
+    case  StateCComment:
+    case  StateCCommentEnd1:
+    case  StateCCommentStart2:
+        state = StateCComment;
+        break;
+    case StateString:
+        // quotes cannot span multiple lines, so if somebody starts
+        // typing a quoted string we don't need to look for the ending
+        // quote in another line (or highlight until the end of the
+        // document) and therefore slow down editing.
+        state = StateStandard;
+        break;
+    case StateString2:
+        state =  StateStandard;
+        break;
+    default:
+        state = StateStandard;
+        break;
+    }
+
+#if 0
+    TextEditDocumentLayout::setParentheses(currentBlock(), parentheses);
+#endif
+
+    setCurrentBlockState((braceDepth << 8) | state);
+}
+
+void QScriptSyntaxHighlighter::highlightWord(int currentPos, const QString &buffer)
+{
+    if (buffer.isEmpty())
+        return;
+
+    // try to highlight Qt 'identifiers' like QObject and Q_PROPERTY
+    // but don't highlight words like 'Query'
+    if (buffer.length() > 1
+        && buffer.at(0) == QLatin1Char('Q')
+        && (buffer.at(1).isUpper()
+            || buffer.at(1) == QLatin1Char('_')
+            || buffer.at(1) == QLatin1Char('t'))) {
+        setFormat(currentPos - buffer.length(), buffer.length(), m_formats[ScriptTypeFormat]);
+    } else {
+        if (isKeyword(buffer))
+            setFormat(currentPos - buffer.length(), buffer.length(), m_formats[ScriptKeywordFormat]);
+    }
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_SYNTAXHIGHLIGHTER
+
diff --git a/src/scripttools/debugging/qscriptsyntaxhighlighter_p.h b/src/scripttools/debugging/qscriptsyntaxhighlighter_p.h
new file mode 100644
index 0000000..6d88c4e
--- /dev/null
+++ b/src/scripttools/debugging/qscriptsyntaxhighlighter_p.h
@@ -0,0 +1,95 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTSYNTAXHIGHLIGHTER_P_H
+#define QSCRIPTSYNTAXHIGHLIGHTER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qglobal.h>
+
+#ifndef QT_NO_SYNTAXHIGHLIGHTER
+
+#include <QtGui/qsyntaxhighlighter.h>
+
+#include <QtGui/qtextformat.h>
+
+QT_BEGIN_NAMESPACE
+
+class Q_AUTOTEST_EXPORT QScriptSyntaxHighlighter : public QSyntaxHighlighter
+{
+public:
+    QScriptSyntaxHighlighter(QTextDocument *document = 0);
+    ~QScriptSyntaxHighlighter();
+
+protected:
+    void highlightBlock(const QString &text);
+
+private:
+    void highlightWord(int currentPos, const QString &buffer);
+
+    enum ScriptFormats {
+        ScriptTextFormat, ScriptNumberFormat,
+        ScriptStringFormat, ScriptTypeFormat,
+        ScriptKeywordFormat, ScriptPreprocessorFormat,
+        ScriptLabelFormat, ScriptCommentFormat,
+        NumScriptFormats
+    };
+    QTextCharFormat m_formats[NumScriptFormats];
+
+private:
+    Q_DISABLE_COPY(QScriptSyntaxHighlighter)
+};
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_SYNTAXHIGHLIGHTER
+
+#endif
diff --git a/src/scripttools/debugging/qscripttooltipproviderinterface_p.h b/src/scripttools/debugging/qscripttooltipproviderinterface_p.h
new file mode 100644
index 0000000..21ed078
--- /dev/null
+++ b/src/scripttools/debugging/qscripttooltipproviderinterface_p.h
@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTTOOLTIPPROVIDERINTERFACE_P_H
+#define QSCRIPTTOOLTIPPROVIDERINTERFACE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+QT_BEGIN_NAMESPACE
+
+class QPoint;
+class QStringList;
+
+class Q_AUTOTEST_EXPORT QScriptToolTipProviderInterface
+{
+public:
+    virtual ~QScriptToolTipProviderInterface() {}
+
+    virtual void showToolTip(const QPoint &pos, int frameIndex,
+                             int lineNumber, const QStringList &path) = 0;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptvalueproperty.cpp b/src/scripttools/debugging/qscriptvalueproperty.cpp
new file mode 100644
index 0000000..e3974a3
--- /dev/null
+++ b/src/scripttools/debugging/qscriptvalueproperty.cpp
@@ -0,0 +1,163 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptvalueproperty_p.h"
+
+#include <QtCore/qatomic.h>
+#include <QtCore/qstring.h>
+
+QT_BEGIN_NAMESPACE
+
+class QScriptValuePropertyPrivate
+{
+public:
+    QScriptValuePropertyPrivate();
+    ~QScriptValuePropertyPrivate();
+
+    QString name;
+    QScriptValue value;
+    QScriptValue::PropertyFlags flags;
+
+    QBasicAtomicInt ref;
+};
+
+QScriptValuePropertyPrivate::QScriptValuePropertyPrivate()
+{
+    ref = 0;
+}
+
+QScriptValuePropertyPrivate::~QScriptValuePropertyPrivate()
+{
+}
+
+/*!
+  Constructs an invalid QScriptValueProperty.
+*/
+QScriptValueProperty::QScriptValueProperty()
+    : d_ptr(0)
+{
+}
+
+/*!
+  Constructs a QScriptValueProperty with the given \a name,
+  \a value and \a flags.
+*/
+QScriptValueProperty::QScriptValueProperty(const QString &name,
+                                           const QScriptValue &value,
+                                           QScriptValue::PropertyFlags flags)
+    : d_ptr(new QScriptValuePropertyPrivate)
+{
+    d_ptr->name = name;
+    d_ptr->value = value;
+    d_ptr->flags = flags;
+    d_ptr->ref.ref();
+}
+
+/*!
+  Constructs a QScriptValueProperty that is a copy of the \a other property.
+*/
+QScriptValueProperty::QScriptValueProperty(const QScriptValueProperty &other)
+    : d_ptr(other.d_ptr.data())
+{
+    if (d_ptr)
+        d_ptr->ref.ref();
+}
+
+/*!
+  Destroys this QScriptValueProperty.
+*/
+QScriptValueProperty::~QScriptValueProperty()
+{
+}
+
+/*!
+  Assigns the \a other property to this QScriptValueProperty.
+*/
+QScriptValueProperty &QScriptValueProperty::operator=(const QScriptValueProperty &other)
+{
+    d_ptr.assign(other.d_ptr.data());
+    return *this;
+}
+
+/*!
+  Returns the name of this QScriptValueProperty.
+*/
+QString QScriptValueProperty::name() const
+{
+    Q_D(const QScriptValueProperty);
+    if (!d)
+        return QString();
+    return d->name;
+}
+
+/*!
+  Returns the value of this QScriptValueProperty.
+*/
+QScriptValue QScriptValueProperty::value() const
+{
+    Q_D(const QScriptValueProperty);
+    if (!d)
+        return QScriptValue();
+    return d->value;
+}
+
+/*!
+  Returns the flags of this QScriptValueProperty.
+*/
+QScriptValue::PropertyFlags QScriptValueProperty::flags() const
+{
+    Q_D(const QScriptValueProperty);
+    if (!d)
+        return 0;
+    return d->flags;
+}
+
+/*!
+  Returns true if this QScriptValueProperty is valid, otherwise
+  returns false.
+*/
+bool QScriptValueProperty::isValid() const
+{
+    Q_D(const QScriptValueProperty);
+    return (d != 0);
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptvalueproperty_p.h b/src/scripttools/debugging/qscriptvalueproperty_p.h
new file mode 100644
index 0000000..c7948b6
--- /dev/null
+++ b/src/scripttools/debugging/qscriptvalueproperty_p.h
@@ -0,0 +1,94 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTVALUEPROPERTY_P_H
+#define QSCRIPTVALUEPROPERTY_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+#include <QtCore/qlist.h>
+#include <QtCore/private/qscopedpointer_p.h>
+#include <QtScript/qscriptvalue.h>
+
+QT_BEGIN_NAMESPACE
+
+class QString;
+
+class QScriptValuePropertyPrivate;
+class Q_AUTOTEST_EXPORT QScriptValueProperty
+{
+public:
+    QScriptValueProperty();
+    QScriptValueProperty(const QString &name,
+                         const QScriptValue &value,
+                         QScriptValue::PropertyFlags flags);
+    QScriptValueProperty(const QScriptValueProperty &other);
+    ~QScriptValueProperty();
+
+    QScriptValueProperty &operator=(const QScriptValueProperty &other);
+
+    QString name() const;
+    QScriptValue value() const;
+    QScriptValue::PropertyFlags flags() const;
+
+    bool isValid() const;
+
+private:
+    QScopedSharedPointer<QScriptValuePropertyPrivate> d_ptr;
+
+    Q_DECLARE_PRIVATE(QScriptValueProperty)
+};
+
+typedef QList<QScriptValueProperty> QScriptValuePropertyList;
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/qscriptxmlparser.cpp b/src/scripttools/debugging/qscriptxmlparser.cpp
new file mode 100644
index 0000000..3fe00ab
--- /dev/null
+++ b/src/scripttools/debugging/qscriptxmlparser.cpp
@@ -0,0 +1,176 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptxmlparser_p.h"
+
+#include <QtCore/qstringlist.h>
+#include <QtCore/qxmlstream.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+static void tokenUntil(QXmlStreamReader &reader, QXmlStreamReader::TokenType target,
+                       QList<int> &lineNumbers)
+{
+    int level = 0;
+    while (!reader.atEnd()) {
+        QXmlStreamReader::TokenType t = reader.readNext();
+        if ((t == target) && (level == 0))
+            return;
+        if (t == QXmlStreamReader::StartElement) {
+            ++level;
+            QString line = reader.attributes().value(QLatin1String("line")).toString();
+            if (!line.isEmpty())
+                lineNumbers.append(line.toInt());
+        } else if (t == QXmlStreamReader::EndElement) {
+            --level;
+        }
+    }
+//    Q_ASSERT_X(false, "QScriptXmlParser", "premature end of file");
+}
+
+QScriptXmlParser::Result QScriptXmlParser::parse(const QString &xml)
+{
+    QMap<QString, int> functionsInfo;
+    QList<int> lineNumbers;
+    QXmlStreamReader reader(xml);
+    reader.readNext(); // StartDocument
+    reader.readNext(); // <program>
+    reader.readNext(); // <source-elements>
+    while (reader.readNext() == QXmlStreamReader::StartElement) {
+//        qDebug() << reader.name().toString();
+        int line = reader.attributes().value(QLatin1String("line")).toString().toInt();
+        lineNumbers.append(line);
+        if (reader.name() == QLatin1String("function-declaration")) {
+            // extract the line number, name and formal parameters
+            reader.readNext(); // <name>
+            reader.readNext(); // Characters
+            QString name = reader.text().toString();
+            reader.readNext(); // </name>
+            reader.readNext(); // <formal-parameter-list>
+            QStringList formalParameters;
+            while (reader.readNext() == QXmlStreamReader::StartElement) {
+                reader.readNext(); // Characters
+                formalParameters.append(reader.text().toString());
+                reader.readNext(); // </identifier>
+            }
+            reader.readNext(); // <function-body>
+            tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
+
+            QString signature;
+            signature.append(name);
+            signature.append(QLatin1Char('('));
+            for (int i = 0; i < formalParameters.size(); ++i) {
+                if (i > 0)
+                    signature.append(QLatin1String(", "));
+                signature.append(formalParameters.at(i));
+            }
+            signature.append(QLatin1Char(')'));
+            functionsInfo.insert(signature, line);
+        } else if (reader.name() == QLatin1String("expression-statement")) {
+            reader.readNext();
+            if ((reader.name() == QLatin1String("binary-expression"))
+                && reader.attributes().value(QLatin1String("op")) == QLatin1String("=")) {
+                // try to match a statement of the form Foo.prototype.bar = function() { ... }
+                // this can be generalized...
+                QString first, second, third;
+                reader.readNext(); // LHS
+                if (reader.name() == QLatin1String("field-member-expression")) {
+                    reader.readNext();
+                    if (reader.name() == QLatin1String("field-member-expression")) {
+                        reader.readNext();
+                        if (reader.name() == QLatin1String("identifier")) {
+                            reader.readNext();
+                            first = reader.text().toString();
+                        }
+                        tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
+                        reader.readNext();
+                        if (reader.name() == QLatin1String("identifier")) {
+                            reader.readNext();
+                            second = reader.text().toString();
+                        }
+                        tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
+                    } else if (reader.name() == QLatin1String("identifier")) {
+                        reader.readNext();
+                        first = reader.text().toString();
+                    }
+                    tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
+                    reader.readNext();
+                    if (reader.name() == QLatin1String("identifier")) {
+                        reader.readNext();
+                        if (second.isEmpty())
+                            second = reader.text().toString();
+                        else
+                            third = reader.text().toString();
+                    }
+                    tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
+                }
+                tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
+                reader.readNext(); // RHS
+                if (reader.name() == QLatin1String("function-expression")) {
+                    if (!first.isEmpty()) {
+                        QString signature = first;
+                        if (!second.isEmpty()) {
+                            signature.append(QLatin1Char('.'));
+                            signature.append(second);
+                            if (!third.isEmpty()) {
+                                signature.append(QLatin1Char('.'));
+                                signature.append(third);
+                            }
+                        }
+                        signature.append(QLatin1String("()"));
+                        functionsInfo.insert(signature, line);
+                    }
+                }
+                tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
+            }
+            tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
+        }
+        tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers);
+    }
+    reader.readNext(); // </source-elements>
+    reader.readNext(); // </program>
+    reader.readNext(); // EndDocument
+    Q_ASSERT(reader.atEnd());
+    return Result(functionsInfo, lineNumbers.toSet());
+}
+
+QT_END_NAMESPACE
diff --git a/src/scripttools/debugging/qscriptxmlparser_p.h b/src/scripttools/debugging/qscriptxmlparser_p.h
new file mode 100644
index 0000000..e81f3ac
--- /dev/null
+++ b/src/scripttools/debugging/qscriptxmlparser_p.h
@@ -0,0 +1,81 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSCriptTools module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSCRIPTXMLPARSER_P_H
+#define QSCRIPTXMLPARSER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qobjectdefs.h>
+
+#include <QtCore/qmap.h>
+#include <QtCore/qset.h>
+#include <QtCore/qstring.h>
+
+QT_BEGIN_NAMESPACE
+
+class Q_AUTOTEST_EXPORT QScriptXmlParser
+{
+public:
+    struct Result
+    {
+        Result(const QMap<QString, int> &fi, const QSet<int> &eln)
+            : functionsInfo(fi), executableLineNumbers(eln) {}
+
+        QMap<QString, int> functionsInfo;
+        QSet<int> executableLineNumbers;
+    };
+    
+    static Result parse(const QString &xml);
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/scripttools/debugging/scripts/commands/advance.qs b/src/scripttools/debugging/scripts/commands/advance.qs
new file mode 100644
index 0000000..2647dc1
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/advance.qs
@@ -0,0 +1,41 @@
+name = "advance";
+
+group = "running";
+
+shortDescription = "Continue the program up to the given location";
+
+longDescription = "This command has the same syntax as the \"break\" command.";
+
+seeAlso = [ "break", "tbreak" ];
+
+argumentTypes = [ "script-filename" ];
+
+function execute() {
+    if (arguments.length == 0) {
+        message("Missing argument(s).");
+        return;
+    }
+    var arg = arguments[0];
+    var colonIndex = arg.lastIndexOf(':');
+    if (colonIndex == -1) {
+        lineNumber = parseInt(arg);
+        if (isNaN(lineNumber)) {
+            message("Location must be of the form <file>:<line> or <line>.");
+            return;
+        }
+        var sid = getCurrentScriptId();
+        if (sid == -1) {
+            message("No script.");
+            return;
+        }
+        scheduleRunToLocation(sid, lineNumber);
+    } else {
+        fileName = arg.slice(0, colonIndex);
+        lineNumber = parseInt(arg.slice(colonIndex+1));
+        // ### resolve the script to see if it's loaded or not? (e.g. so we can issue a warning)
+        scheduleRunToLocation(fileName, lineNumber);
+    }
+}
+
+function handleResponse(resp) {
+}
diff --git a/src/scripttools/debugging/scripts/commands/backtrace.qs b/src/scripttools/debugging/scripts/commands/backtrace.qs
new file mode 100644
index 0000000..4e959fd
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/backtrace.qs
@@ -0,0 +1,26 @@
+name = "backtrace";
+
+group = "stack";
+
+shortDescription = "Print backtrace of stack frames";
+
+longDescription = "";
+
+aliases = [ "bt" ];
+
+seeAlso = [ "frame", "info" ];
+
+function execute() {
+    scheduleGetBacktrace();
+};
+
+function handleResponse(resp) {
+    var strings = resp.result;
+    var msg = "";
+    for (var i = 0; i < strings.length; ++i) {
+        if (i > 0)
+            msg += "\n";
+        msg += "#" + i + "  " + strings[i];
+    }
+    message(msg);
+}
diff --git a/src/scripttools/debugging/scripts/commands/break.qs b/src/scripttools/debugging/scripts/commands/break.qs
new file mode 100644
index 0000000..8363685
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/break.qs
@@ -0,0 +1,59 @@
+name = "break";
+
+group = "breakpoints";
+
+shortDescription = "Set a breakpoint at specified location";
+
+longDescription = "break <file>:<line> : Sets a breakpoint at the given location.";
+longDescription += "\nbreak <line> : Sets a breakpoint at the given line of the current file.";
+
+argumentTypes = [ "script-filename" ];
+
+aliases = [ "b" ];
+
+seeAlso = [ "condition", "delete", "disable", "tbreak" ];
+
+function execute() {
+    if (arguments.length == 0) {
+        message("Missing argument.");
+        return;
+    }
+    var arg = arguments[0];
+    var colonIndex = arg.lastIndexOf(':');
+    if (colonIndex == -1) {
+        lineNumber = parseInt(arg);
+        if (isNaN(lineNumber)) {
+            message("Breakpoint location must be of the form <file>:<line> or <line>.");
+            return;
+        }
+        var sid = getCurrentScriptId();
+        if (sid == -1) {
+            message("No script.");
+            return;
+        }
+        scheduleGetScriptData(sid);
+        scriptId = sid;
+        state = 1;
+    } else {
+        fileName = arg.slice(0, colonIndex);
+        lineNumber = parseInt(arg.slice(colonIndex+1));
+        // ### resolve the script to see if it's loaded or not? (e.g. so we can issue a warning)
+        scheduleSetBreakpoint({ fileName: fileName, lineNumber: lineNumber});
+        state = 2;
+    }
+}
+
+function handleResponse(resp) {
+    if (state == 1) {
+        fileName = resp.result.fileName;
+        if (fileName.length == 0)
+            fileName = "<anonymous script, id=" + scriptId + ">";
+        scheduleSetBreakpoint({ scriptId: scriptId, lineNumber: lineNumber});
+        state = 2;
+    } else if (state == 2) {
+        if (resp.error == 0) {
+            var id = resp.result;
+            message("Breakpoint " + id + ": " + fileName + ", line " + lineNumber + ".");
+        }
+    }
+}
diff --git a/src/scripttools/debugging/scripts/commands/clear.qs b/src/scripttools/debugging/scripts/commands/clear.qs
new file mode 100644
index 0000000..3a22587
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/clear.qs
@@ -0,0 +1,59 @@
+name = "clear";
+
+group = "breakpoints";
+
+shortDescription = "Clear breakpoint at specified location";
+
+longDescription = "clear <file>:<line> : Clear breakpoints at the given location.";
+longDescription += "\nclear <line> : Clear breakpoints at the given line of the current script.";
+
+seeAlso = [ "delete" ];
+
+argumentTypes = [ "script-filename" ];
+
+function execute() {
+    if (arguments.length == 0) {
+        message("Missing argument.");
+        return;
+    }
+    var arg = arguments[0];
+    var colonIndex = arg.lastIndexOf(':');
+    if (colonIndex == -1) {
+        lineNumber = parseInt(arg);
+        if (isNaN(lineNumber)) {
+            message("Breakpoint location must be of the form <file>:<line> or <line>.");
+            return;
+        }
+        var sid = getCurrentScriptId();
+        if (sid == -1) {
+            message("No script.");
+            return;
+        }
+        scriptId = sid;
+    } else {
+        fileName = arg.slice(0, colonIndex);
+        lineNumber = parseInt(arg.slice(colonIndex+1));
+    }
+    scheduleGetBreakpoints();
+    state = 1;
+}
+
+function handleResponse(resp) {
+    if (state == 1) {
+        var breakpoints = resp.result;
+        if (breakpoints == undefined)
+            return;
+        for (var id in breakpoints) {
+            var data = breakpoints[id];
+            if ((data.lineNumber == lineNumber)
+                && (data.fileName == fileName)
+                    || ((data.scriptId != -1) && (data.scriptId = scriptId))) {
+                scheduleDeleteBreakpoint(id);
+                message("Deleted breakpoint " + id + ".");
+            }
+        }
+        state = 2;
+    } else if (state == 2) {
+
+    }
+}
diff --git a/src/scripttools/debugging/scripts/commands/complete.qs b/src/scripttools/debugging/scripts/commands/complete.qs
new file mode 100644
index 0000000..9d60312
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/complete.qs
@@ -0,0 +1,14 @@
+name = "complete";
+
+group = "void";
+
+shortDescription = "List the completions for the rest of the line as a command";
+
+longDescription = "";
+
+function execute() {
+    var prefix = (arguments.length > 0) ? arguments[0] : "";
+    var completions = getCommandCompletions(prefix);
+    for (var i = 0; i < completions.length; ++i)
+        message(completions[i]);
+}
diff --git a/src/scripttools/debugging/scripts/commands/condition.qs b/src/scripttools/debugging/scripts/commands/condition.qs
new file mode 100644
index 0000000..9bf6ae2
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/condition.qs
@@ -0,0 +1,52 @@
+name = "condition";
+
+group = "breakpoints";
+
+shortDescription = "Specify breakpoint condition";
+
+longDescription = "condition <breakpoint-id> <expression> : Specify that the breakpoint with the given id should only be triggered if the given expression evaluates to true.";
+
+argumentTypes = [ "breakpoint-id", "script" ];
+
+seeAlso = [ "ignore" ];
+
+function execute() {
+    if (arguments.length == 0) {
+        message("Missing arguments (breakpoint number and condition).");
+        return;
+    }
+    var arg = arguments[0];
+    var spaceIndex = arg.indexOf(' ');
+    if (spaceIndex == -1)
+        spaceIndex = arg.length;
+    var id = parseInt(arg.slice(0, spaceIndex));
+    if (isNaN(id)) {
+        message("First argument must be a number (breakpoint id).");
+        return;
+    }
+    var cond = arg.slice(spaceIndex+1);
+    if ((cond.length != 0) && !checkSyntax(cond)) {
+        message("The condition has a syntax error.");
+        return;
+    }
+    scheduleGetBreakpointData(id);
+    breakpointId = id;
+    condition = cond;
+    state = 1;
+}
+
+function handleResponse(resp) {
+    if (state == 1) {
+        var data = resp.result;
+        if (data == undefined) {
+            message("No breakpoint number " + breakpointId + ".");
+            return;
+        }
+        data.condition = condition;
+        scheduleSetBreakpointData(breakpointId, data);
+        state = 2;
+    } else if (state == 2) {
+        if (condition.length == 0)
+            message("Breakpoint " + breakpointId + " now unconditional.");
+    }
+}
diff --git a/src/scripttools/debugging/scripts/commands/continue.qs b/src/scripttools/debugging/scripts/commands/continue.qs
new file mode 100644
index 0000000..a940f13
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/continue.qs
@@ -0,0 +1,22 @@
+name = "continue";
+
+group = "running";
+
+shortDescription = "Continue evaluation";
+
+longDescription = "Evaluation will continue until an uncaught exception occurs, "
+longDescription += "a breakpoint is hit or evaluation is explicitly interrupted.";
+
+aliases = [ "c", "fg" ];
+
+seeAlso = [ "step", "interrupt" ];
+
+function execute() {
+    scheduleContinue();
+};
+
+function handleResponse(resp) {
+    if (!resp.async) {
+        message("The target is not evaluating code.");
+    }
+}
diff --git a/src/scripttools/debugging/scripts/commands/delete.qs b/src/scripttools/debugging/scripts/commands/delete.qs
new file mode 100644
index 0000000..84497a7
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/delete.qs
@@ -0,0 +1,36 @@
+name = "delete";
+
+group = "breakpoints";
+
+shortDescription = "Delete breakpoint(s)";
+
+longDescription = "delete <breakpoint-id> : Deletes the breakpoint with the given id.";
+
+seeAlso = [ "clear", "disable" ];
+
+function execute() {
+    if (arguments.length == 0) {
+        // delete all breakpoints
+        scheduleClearBreakpoints();
+        state = 1;
+    } else {
+        var id = parseInt(arguments[0]);
+        if (isNaN(id)) {
+            message("Breakpoint id expected.");
+            return;
+        }
+        scheduleDeleteBreakpoint(id);
+        breakpointId = id;
+        state = 2;
+    }
+}
+
+function handleResponse(resp) {
+    if (state == 1) {
+    } else if (state == 2) {
+        if (resp.error != 0) {
+            message("No breakpoint number " + breakpointId + ".");
+            return;
+        }
+    }
+}
diff --git a/src/scripttools/debugging/scripts/commands/disable.qs b/src/scripttools/debugging/scripts/commands/disable.qs
new file mode 100644
index 0000000..91bf44b
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/disable.qs
@@ -0,0 +1,56 @@
+name = "disable";
+
+group = "breakpoints";
+
+shortDescription = "Disable breakpoint(s)";
+
+longDescription = "disable <breakpoint-id> : Disables the breakpoint with the given id.";
+
+seeAlso = [ "enable", "delete", "ignore" ];
+
+function execute() {
+    if (arguments.length == 0) {
+        // disable all breakpoints
+        state = 1;
+        scheduleGetBreakpoints();
+    } else {
+        var id = parseInt(arguments[0]);
+        if (isNaN(id)) {
+            message("Breakpoint id expected.");
+            return;
+        }
+        scheduleGetBreakpointData(id);
+        breakpointId = id;
+        state = 3;
+    }
+};
+
+function handleResponse(resp) {
+    if (state == 1) {
+        var breakpoints = resp.result;
+        if (breakpoints == undefined)
+            return;
+        for (var id in breakpoints) {
+            var data = breakpoints[id];
+            if (data.enabled) {
+                data.enabled = false;
+                scheduleSetBreakpointData(id, data);
+            }
+        }
+        state = 2;
+    } else if (state == 2) {
+        state = 0;
+    } else if (state == 3) {
+        var data = resp.result;
+        if (data == undefined) {
+            message("No breakpoint number " + breakpointId + ".");
+            return;
+        } else if (data.enabled) {
+            data.enabled = false;
+            scheduleSetBreakpointData(breakpointId, data);
+            state = 4;
+        }
+    } else if (state == 4) {
+        state = 0;
+    }
+}
diff --git a/src/scripttools/debugging/scripts/commands/down.qs b/src/scripttools/debugging/scripts/commands/down.qs
new file mode 100644
index 0000000..dc0429b
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/down.qs
@@ -0,0 +1,33 @@
+name = "down";
+
+group = "stack";
+
+shortDescription = "Select and print the stack frame below the current one";
+
+longDescription = "";
+
+seeAlso = [ "up", "frame" ];
+
+function execute() {
+    var idx = getCurrentFrameIndex();
+    if (idx == 0) {
+        warning("Already at bottom (innermost) frame.");
+        return;
+    }
+    setCurrentFrameIndex(idx - 1);
+    scheduleGetContextInfo(idx - 1);
+    state = 1;
+}
+
+function handleResponse(resp, id) {
+    if (state == 1) {
+        var info = resp.result;
+        setCurrentScriptId(info.scriptId);
+        setCurrentLineNumber(info.lineNumber);
+        scheduleGetBacktrace();
+        state = 2;
+    } else if (state == 2) {
+        var backtrace = resp.result;
+        message("#" + getCurrentFrameIndex() + "  " + backtrace[getCurrentFrameIndex()]);
+    }
+}
diff --git a/src/scripttools/debugging/scripts/commands/enable.qs b/src/scripttools/debugging/scripts/commands/enable.qs
new file mode 100644
index 0000000..6468d0a
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/enable.qs
@@ -0,0 +1,56 @@
+name = "enable";
+
+group = "breakpoints";
+
+shortDescription = "Enable breakpoint(s)";
+
+longDescription = "enable <breakpoint-id> : Enable the breakpoint with the given id.";
+
+seeAlso = [ "disable" ];
+
+function execute() {
+    if (arguments.length == 0) {
+        // enable all breakpoints
+        state = 1;
+        scheduleGetBreakpoints();
+    } else {
+        var id = parseInt(arguments[0]);
+        if (isNaN(id)) {
+            message("Breakpoint id expected.");
+            return;
+        }
+        scheduleGetBreakpointData(id);
+        breakpointId = id;
+        state = 3;
+    }
+};
+
+function handleResponse(resp) {
+    if (state == 1) {
+        var breakpoints = resp.result;
+        if (breakpoints == undefined)
+            return;
+        for (var id in breakpoints) {
+            var data = breakpoints[id];
+            if (!data.enabled) {
+                data.enabled = true;
+                scheduleSetBreakpointData(id, data);
+            }
+        }
+        state = 2;
+    } else if (state == 2) {
+        state = 0;
+    } else if (state == 3) {
+        var data = resp.result;
+        if (data == undefined) {
+            message("No breakpoint number " + breakpointId + ".");
+            return;
+        } else if (!data.enabled) {
+            data.enabled = true;
+            scheduleSetBreakpointData(breakpointId, data);
+            state = 4;
+        }
+    } else if (state == 4) {
+        state = 0;
+    }
+}
diff --git a/src/scripttools/debugging/scripts/commands/eval.qs b/src/scripttools/debugging/scripts/commands/eval.qs
new file mode 100644
index 0000000..02a1b9f
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/eval.qs
@@ -0,0 +1,21 @@
+name = "eval";
+
+group = "running";
+
+shortDescription = "Evaluate program";
+
+longDescription = "";
+
+argumentTypes = [ "script" ];
+
+function execute() {
+    if (arguments.length == 0) {
+        message("Missing argument (program).");
+        return;
+    }
+    setEvaluateAction(0);
+    scheduleEvaluate(getCurrentFrameIndex(), arguments[0], "console input (" + Date() + ")");
+};
+
+function handleResponse(resp, id) {
+}
diff --git a/src/scripttools/debugging/scripts/commands/finish.qs b/src/scripttools/debugging/scripts/commands/finish.qs
new file mode 100644
index 0000000..bf19fc0
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/finish.qs
@@ -0,0 +1,16 @@
+name = "finish";
+
+group = "running";
+
+shortDescription = "Execute until the current stack frame returns";
+
+longDescription = "Upon return, the value returned is printed.";
+
+seeAlso = [ "next", "continue" ];
+
+function execute() {
+    scheduleStepOut();
+};
+
+function handleResponse(resp) {
+}
diff --git a/src/scripttools/debugging/scripts/commands/frame.qs b/src/scripttools/debugging/scripts/commands/frame.qs
new file mode 100644
index 0000000..5dc4611
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/frame.qs
@@ -0,0 +1,36 @@
+name = "frame";
+
+group = "stack";
+
+shortDescription = "Select and print a stack frame";
+
+longDescription = "";
+
+aliases = [ "f" ];
+
+function execute() {
+    if (arguments.length == 0)
+        requestedFrameIndex = getCurrentFrameIndex();
+    else
+        requestedFrameIndex = parseInt(arguments[0]);
+    scheduleGetContextInfo(requestedFrameIndex);
+    state = 1;
+};
+
+function handleResponse(resp, id) {
+    if (state == 1) {
+        var info = resp.result;
+        if (info == undefined) {
+            message("Frame index out of range.");
+            return;
+        }
+        setCurrentFrameIndex(requestedFrameIndex);
+        setCurrentScriptId(info.scriptId);
+        setCurrentLineNumber(info.lineNumber);
+        scheduleGetBacktrace();
+        state = 2;
+    } else if (state == 2) {
+        var backtrace = resp.result;
+        message("#" + getCurrentFrameIndex() + "  " + backtrace[getCurrentFrameIndex()]);
+    }
+}
diff --git a/src/scripttools/debugging/scripts/commands/help.qs b/src/scripttools/debugging/scripts/commands/help.qs
new file mode 100644
index 0000000..121db11
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/help.qs
@@ -0,0 +1,71 @@
+name = "help";
+
+group = "void";
+
+shortDescription = "Print list of commands";
+
+longDescription = "";
+
+argumentTypes = [ "command-or-group-name" ];
+
+function execute() {
+    if (arguments.length == 0) {
+        var groups = getCommandGroups();
+        message("List of command categories:");
+        message("");
+        for (var name in groups) {
+            if (name == "void")
+                continue;
+            var data = groups[name];
+            message(name + " :: " + data.shortDescription);
+        }
+        message("");
+        message("Type \"help\" followed by a category name for a list of commands in that category.");
+        message("Type \"help all\" for the list of all commands.");
+        message("Type \"help\" followed by a command name for full documentation.");
+        message("Command name abbreviations are allowed if they are unambiguous.");
+    } else {
+        var arg = arguments[0];
+        if (arg == "all") {
+            var groups = getCommandGroups();
+            for (var name in groups) {
+                if (name == "void")
+                    continue;
+                message("Command category: " + name);
+                message("");
+                var commands = getCommandsInGroup(name);
+                for (var i = 0; i < commands.length; ++i) {
+                    var data = commands[i];
+                    message(data.name + " :: " + data.shortDescription);
+                }
+                message("");
+            }
+        } else {
+            var data = findCommand(arg);
+            if (data != undefined) {
+                message(data.shortDescription + ".");
+                if (data.longDescription.length != 0)
+                    message(data.longDescription);
+                if (data.aliases.length != 0)
+                    message("Aliases: " + data.aliases.join(", "));
+                if (data.seeAlso.length != 0)
+                    message("See also: " + data.seeAlso.join(", "));
+            } else {
+                data = getCommandGroups()[arg];
+                if (data != undefined) {
+                    message(data.shortDescription + ".");
+                    message("");
+                    message("List of commands:");
+                    message("");
+                    var commands = getCommandsInGroup(arg);
+                    for (var i = 0; i < commands.length; ++i) {
+                        var data = commands[i];
+                        message(data.name + " :: " + data.shortDescription);
+                    }
+                } else {
+                    message("Undefined command \"" + arg + "\". Try \"help\".");
+                }
+            }
+        }
+    }
+};
diff --git a/src/scripttools/debugging/scripts/commands/ignore.qs b/src/scripttools/debugging/scripts/commands/ignore.qs
new file mode 100644
index 0000000..b625bae
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/ignore.qs
@@ -0,0 +1,51 @@
+name = "ignore";
+
+group = "breakpoints";
+
+shortDescription = "Set ignore-count of a breakpoint";
+
+longDescription = "ignore <breakpoint-id> <count> : Ignores the breakpoint with the given id the next count times it is hit.";
+
+seeAlso = [ "condition" ];
+
+function execute() {
+    if (arguments.length < 1) {
+        message("Missing arguments (breakpoing number and ignore-count).");
+        return;
+    }
+    if (arguments.length < 2) {
+        message("Missing argument (ignore-count).");
+        return;
+    }
+    var id = parseInt(arguments[0]);
+    if (isNaN(id)) {
+        message("First argument (breakpoint id) must be a number.");
+        return;
+    }
+    var count = parseInt(arguments[1]);
+    if (isNaN(count)) {
+        message("Second argument (ignore-count) must be a number.");
+        return;
+    }
+    scheduleGetBreakpointData(id);
+    breakpointId = id;
+    if (count < 0)
+        count = 0;
+    ignoreCount = count;
+    state = 1;
+}
+
+function handleResponse(resp) {
+    if (state == 1) {
+        var data = resp.result;
+        if (data == undefined) {
+            message("No breakpoint number " + breakpointId + ".");
+            return;
+        }
+        data.ignoreCount = ignoreCount;
+        scheduleSetBreakpointData(breakpointId, data);
+        state = 2;
+    } else if (state == 2) {
+        message("Breakpoint " + breakpointId + " will be ignored the next " + ignoreCount + " time(s).");
+    }
+}
diff --git a/src/scripttools/debugging/scripts/commands/info.qs b/src/scripttools/debugging/scripts/commands/info.qs
new file mode 100644
index 0000000..2577e92
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/info.qs
@@ -0,0 +1,128 @@
+name = "info";
+
+group = "status";
+
+shortDescription = "Display information about something";
+
+longDescription = "info scripts : Names of scripts being debugged";
+longDescription += "\ninfo breakpoints : Status of breakpoints currently set";
+longDescription += "\ninfo locals : Local variables of current stack frame";
+
+argumentTypes = [ "subcommand-name" ];
+
+subCommands = [ "breakpoints", "locals", "scripts" ];
+
+function execute() {
+    var arg = arguments[0];
+    if (arg == undefined) {
+        message("\"info\" must be followed by the name of an info command.");
+        return;
+    } else if (arg == "scripts") {
+        scheduleGetScripts();
+        state = 1;
+    } else if (arg == "breakpoints") {
+        if (arguments.length > 1) {
+            var id = parseInt(arguments[1]);
+            if (isNaN(id)) {
+                message("Breakpoint id expected.");
+                return;
+            }
+            scheduleGetBreakpointData(id);
+            breakpointId = id;
+            state = 3;
+        } else {
+            scheduleGetBreakpoints();
+            state = 2;
+        }
+    } else if (arg == "locals") {
+        scheduleGetActivationObject(getCurrentFrameIndex());
+        state = 4;
+    } else {
+        warning("Undefined info command \"" + arg + "\". Try \"help info\".");
+    }
+}
+
+function breakpointString(id, data) {
+    var fn = data.fileName;
+    if (fn.length == 0)
+        fn = "<anonymous script, id=" + data.scriptId + ">";
+    var ret = id + "\t" + (data.enabled ? "yes" : "no")
+        + "\t" + fn + ":" + data.lineNumber;
+    if (data.condition.length != 0) {
+        ret += "\n\tstop only if " + data.condition;
+    }
+    return ret;
+}
+
+function handleResponse(resp) {
+    if (state == 1) {
+        // info scripts
+        var scripts = resp.result;
+        if (scripts == undefined) {
+            message("No scripts loaded.");
+            return;
+        }
+        for (var id in scripts) {
+            var fn = scripts[id].fileName;
+            if (fn.length == 0)
+                fn = "<anonymous script, id=" + id + ">";
+            message("\t" + fn);
+        }
+    }
+
+    else if (state == 2) {
+        // info breakpoints
+        var breakpoints = resp.result;
+        if (breakpoints == undefined) {
+            message("No breakpoints set.");
+            return;
+        }
+        message("Id\tEnabled\tWhere");
+        for (var id in breakpoints) {
+            var data = breakpoints[id];
+            message(breakpointString(id, data));
+        }
+    } else if (state == 3) {
+        // info breakpoints N
+        var data = resp.result;
+        if (data == undefined) {
+            message("No breakpoint number " + breakpointId + ".");
+            return;
+        }
+        message("Id\tEnabled\tWhere");
+        message(breakpointString(breakpointId, data));
+    }
+
+    else if (state == 4) {
+        // info locals
+        var act = resp.result;
+        scheduleNewScriptValueIterator(act);
+        state = 5;
+    } else if (state == 5) {
+        var id = resp.result;
+        scheduleGetPropertiesByIterator(id, 100);
+        iteratorId = id;
+        state = 6;
+    } else if (state == 6) {
+        var props = resp.result;
+        if (props.length == 0) {
+            scheduleDeleteScriptValueIterator(iteratorId);
+            state = 7;
+            return;
+        }
+        var maxLength = 0;
+        for (var i = 0; i < props.length; ++i)
+            maxLength = Math.max(props[i].name.length, maxLength);
+        for (var i = 0; i < props.length; ++i) {
+            var prop = props[i]; 
+            var msg = prop.name;
+            var pad = maxLength - prop.name.length;
+            for (var j = 0; j < pad; ++j)
+                msg += ' ';
+            message(msg + " : " + prop.valueAsString);
+        }
+        scheduleGetPropertiesByIterator(iteratorId, 100);
+    } else if (state == 7) {
+        // done
+    }
+}
diff --git a/src/scripttools/debugging/scripts/commands/interrupt.qs b/src/scripttools/debugging/scripts/commands/interrupt.qs
new file mode 100644
index 0000000..d4b66cc
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/interrupt.qs
@@ -0,0 +1,14 @@
+name = "interrupt";
+
+group = "running";
+
+shortDescription = "Interrupt evaluation";
+
+longDescription = "Interruption will occur as soon as a new script statement is reached.";
+
+function execute() {
+    scheduleInterrupt();
+}
+
+function handleResponse(resp) {
+}
diff --git a/src/scripttools/debugging/scripts/commands/list.qs b/src/scripttools/debugging/scripts/commands/list.qs
new file mode 100644
index 0000000..312b123
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/list.qs
@@ -0,0 +1,90 @@
+name = "list";
+
+group = "files";
+
+shortDescription = "List lines of a script";
+
+longDescription = "list <file>:<line> : Lists lines around the given location.";
+longDescription += "\nlist <line> : Lists lines in the current file.";
+
+argumentTypes = [ "script-filename" ];
+
+listLineNumber = 1;
+listScriptId = -1;
+lastSessionId = -1;
+lastFrameIndex = -1;
+
+function execute() {
+    state = 0;
+    if (arguments.length > 0) {
+        var arg = arguments[0];
+        var colonIndex = arg.lastIndexOf(':');
+        var fileName;
+        var lineNumber;
+        if (colonIndex == -1) {
+            lineNumber = parseInt(arg);
+            if (isNaN(lineNumber)) {
+                fileName = arg;
+                lineNumber = 1;
+            }
+        } else if (colonIndex == 0) {
+            fileName = arg;
+            lineNumber = 1;
+        } else {
+            fileName = arg.slice(0, colonIndex);
+            lineNumber = parseInt(arg.slice(colonIndex+1));
+        }
+        listLineNumber = Math.max(lineNumber, 1);
+        if (fileName != undefined) {
+            scheduleResolveScript(fileName);
+            state = 1;
+        } else {
+            setCurrentLineNumber(listLineNumber);
+            execute();
+        }
+    } else {
+        if ((getSessionId() != lastSessionId)
+            || (getCurrentFrameIndex() != lastFrameIndex)
+            || (listScriptId == -1)) {
+            listScriptId = getCurrentScriptId();
+            listLineNumber = getCurrentLineNumber();
+            lastSessionId = getSessionId();
+            lastFrameIndex = getCurrentFrameIndex();
+        }
+        scheduleGetScriptData(listScriptId);
+        state = 2;
+    }
+};
+
+function handleResponse(resp) {
+    if (state == 1) {
+        var id = resp.result;
+        if (id == -1) {
+            message("That script isn't loaded.");
+            state = 0;
+            return;
+        }
+        listScriptId = id;
+        scheduleGetScriptData(listScriptId);
+        state = 2;
+    } else if (state == 2) {
+        var data = resp.result;
+        if (data == undefined) {
+            message("No script.");
+            state = 0;
+            return;
+        }
+        var base = data.baseLineNumber;
+        var lines = data.contents.split('\n');
+        var start = Math.max(listLineNumber - 5, base);
+        for (var i = start; i < start + 10; ++i) {
+            var ln = lines[i - base];
+            var msg = String(i);
+            if (ln != undefined)
+                msg += "\t" + ln;
+            message(msg);
+        }
+        listLineNumber += 10;
+        state = 0;
+    }
+}
diff --git a/src/scripttools/debugging/scripts/commands/next.qs b/src/scripttools/debugging/scripts/commands/next.qs
new file mode 100644
index 0000000..bc37a01
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/next.qs
@@ -0,0 +1,27 @@
+name = "next";
+
+group = "running";
+
+shortDescription = "Step program, proceeding through subroutine calls";
+
+longDescription = "Like the \"step\" command as long as subroutine calls do not happen;";
+longDescription += "\nwhen they do, the call is treated as one instruction.";
+longDescription += "\nIf a number N is given as argument, this will be done N times before execution is stopped.";
+aliases = [ "n" ];
+
+seeAlso = [ "step", "continue", "finish", "advance" ];
+
+function execute() {
+    var count = 1;
+    if (arguments.length != 0) {
+        var arg = arguments[0];
+        // ### evaluate the expression in the current frame?
+        var num = parseInt(arg);
+        if (!isNaN(num) && (num >= 1))
+            count = num;
+    }
+    scheduleStepOver(count);
+};
+
+function handleResponse(resp) {
+}
diff --git a/src/scripttools/debugging/scripts/commands/print.qs b/src/scripttools/debugging/scripts/commands/print.qs
new file mode 100644
index 0000000..9b98d16
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/print.qs
@@ -0,0 +1,23 @@
+// ### exactly the same as eval, but provided for convenience
+
+name = "print";
+
+group = "status";
+
+shortDescription = "Print value of an expression";
+
+longDescription = "";
+
+argumentTypes = [ "script" ];
+
+function execute() {
+    if (arguments.length == 0) {
+        message("Missing argument (expression).");
+        return;
+    }
+    setEvaluateAction(0);
+    scheduleEvaluate(getCurrentFrameIndex(), arguments[0], "console input (" + Date() + ")");
+};
+
+function handleResponse(resp, id) {
+}
diff --git a/src/scripttools/debugging/scripts/commands/return.qs b/src/scripttools/debugging/scripts/commands/return.qs
new file mode 100644
index 0000000..372c818
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/return.qs
@@ -0,0 +1,20 @@
+name = "return";
+
+group = "running";
+
+shortDescription = "Make selected stack frame return to its caller";
+
+longDescription = "";
+
+argumentTypes = [ "script" ];
+
+function execute() {
+    // TODO:
+    // 1. schedule evaluate of the expression.
+    // 2. install event handler/filter, so that we're notified when the evaluate is done.
+    //    - what if another event occurs while we evaluate? (e.g. an exception or breakpoint)
+    //    - the event filter needs to uninstall itself, or the event needs to be consumed internally
+    // 3. in the event handler, schedule forced return with the result as argument.
+    setEvaluateAction(1);
+    scheduleEvaluate(getCurrentFrameIndex(), arguments[0], "console input (" + Date() + ")");
+};
diff --git a/src/scripttools/debugging/scripts/commands/step.qs b/src/scripttools/debugging/scripts/commands/step.qs
new file mode 100644
index 0000000..1aacec0
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/step.qs
@@ -0,0 +1,26 @@
+name = "step";
+
+group = "running";
+
+shortDescription = "Step program until a new statement is reached";
+
+longDescription = "If a number N is given as argument, this will be done N times before execution is stopped.";
+
+aliases = [ "s" ];
+
+seeAlso = [ "next" ];
+
+function execute() {
+    var count = 1;
+    if (arguments.length != 0) {
+        var arg = arguments[0];
+        // ### evaluate the expression in the current frame?
+        var num = parseInt(arg);
+        if (!isNaN(num) && (num >= 1))
+            count = num;
+    }
+    scheduleStepInto(count);
+};
+
+function handleResponse(resp) {
+}
diff --git a/src/scripttools/debugging/scripts/commands/tbreak.qs b/src/scripttools/debugging/scripts/commands/tbreak.qs
new file mode 100644
index 0000000..66a8224
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/tbreak.qs
@@ -0,0 +1,59 @@
+name = "tbreak";
+
+group = "breakpoints";
+
+shortDescription = "Set a temporary breakpoint";
+
+longDescription = "The same as the \"break\" command, except that the breakpoint is automatically deleted as soon as it is triggered.";
+
+seeAlso = [ "break", "ignore" ];
+
+argumentTypes = [ "script-filename" ];
+
+// ### merge with break.qs: only difference is the "singleShot: true" in call to scheduleSetBreakpoint()
+// ### maybe an include() function so commands can share code?
+
+function execute() {
+    if (arguments.length == 0) {
+        message("Missing argument.");
+        return;
+    }
+    var arg = arguments[0];
+    var colonIndex = arg.lastIndexOf(':');
+    if (colonIndex == -1) {
+        lineNumber = parseInt(arg);
+        if (isNaN(lineNumber)) {
+            message("Breakpoint location must be of the form <file>:<line> or <line>.");
+            return;
+        }
+        var sid = getCurrentScriptId();
+        if (sid == -1) {
+            message("No script.");
+            return;
+        }
+        scheduleGetScriptData(sid);
+        scriptId = sid;
+        state = 1;
+    } else {
+        fileName = arg.slice(0, colonIndex);
+        lineNumber = parseInt(arg.slice(colonIndex+1));
+        // ### resolve the script to see if it's loaded or not? (e.g. so we can issue a warning)
+        scheduleSetBreakpoint({ fileName: fileName, lineNumber: lineNumber, singleShot: true });
+        state = 2;
+    }
+}
+
+function handleResponse(resp) {
+    if (state == 1) {
+        fileName = resp.result.fileName;
+        if (fileName.length == 0)
+            fileName = "<anonymous script, id=" + scriptId + ">";
+        scheduleSetBreakpoint({ scriptId: scriptId, lineNumber: lineNumber, singleShot: true });
+        state = 2;
+    } else if (state == 2) {
+        if (resp.error == 0) {
+            var id = resp.result;
+            message("Breakpoint " + id + ": " + fileName + ", line " + lineNumber + ".");
+        }
+    }
+}
diff --git a/src/scripttools/debugging/scripts/commands/up.qs b/src/scripttools/debugging/scripts/commands/up.qs
new file mode 100644
index 0000000..2d49df3
--- /dev/null
+++ b/src/scripttools/debugging/scripts/commands/up.qs
@@ -0,0 +1,37 @@
+name = "up";
+
+group = "stack";
+
+shortDescription = "Select and print the stack frame above the current one";
+
+longDescription = "";
+
+seeAlso = [ "down", "frame" ];
+
+function execute() {
+    scheduleGetContextCount();
+    state = 1;
+}
+
+function handleResponse(resp) {
+    if (state == 1) {
+        var count = resp.result;
+        var idx = getCurrentFrameIndex() + 1;
+        if (idx == count) {
+            warning("Already at top (outermost) frame.");
+            return;
+        }
+        setCurrentFrameIndex(idx);
+        scheduleGetContextInfo(idx);
+        state = 2;
+    } else if (state == 2) {
+        var info = resp.result;
+        setCurrentScriptId(info.scriptId);
+        setCurrentLineNumber(info.lineNumber);
+        scheduleGetBacktrace();
+        state = 3;
+    } else if (state == 3) {
+        var backtrace = resp.result;
+        message("#" + getCurrentFrameIndex() + "  " + backtrace[getCurrentFrameIndex()]);
+    }
+}
diff --git a/src/scripttools/debugging/scripttools_debugging.qrc b/src/scripttools/debugging/scripttools_debugging.qrc
new file mode 100644
index 0000000..ba0aba8
--- /dev/null
+++ b/src/scripttools/debugging/scripttools_debugging.qrc
@@ -0,0 +1,63 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource prefix="/qt/scripttools/debugging/">
+
+<file>scripts/commands/advance.qs</file>
+<file>scripts/commands/backtrace.qs</file>
+<file>scripts/commands/break.qs</file>
+<file>scripts/commands/clear.qs</file>
+<file>scripts/commands/complete.qs</file>
+<file>scripts/commands/condition.qs</file>
+<file>scripts/commands/continue.qs</file>
+<file>scripts/commands/delete.qs</file>
+<file>scripts/commands/disable.qs</file>
+<file>scripts/commands/down.qs</file>
+<file>scripts/commands/enable.qs</file>
+<file>scripts/commands/eval.qs</file>
+<file>scripts/commands/finish.qs</file>
+<file>scripts/commands/frame.qs</file>
+<file>scripts/commands/help.qs</file>
+<file>scripts/commands/ignore.qs</file>
+<file>scripts/commands/info.qs</file>
+<file>scripts/commands/interrupt.qs</file>
+<file>scripts/commands/list.qs</file>
+<file>scripts/commands/next.qs</file>
+<file>scripts/commands/print.qs</file>
+<file>scripts/commands/return.qs</file>
+<file>scripts/commands/step.qs</file>
+<file>scripts/commands/tbreak.qs</file>
+<file>scripts/commands/up.qs</file>
+
+<file>images/interrupt.png</file>
+<file>images/d_interrupt.png</file>
+<file>images/play.png</file>
+<file>images/d_play.png</file>
+<file>images/stepinto.png</file>
+<file>images/stepover.png</file>
+<file>images/stepout.png</file>
+<file>images/runtocursor.png</file>
+<file>images/runtonewscript.png</file>
+<file>images/return.png</file>
+<file>images/reload.png</file>
+
+<file>images/location.svg</file>
+<file>images/breakpoint.svg</file>
+<file>images/d_breakpoint.svg</file>
+<file>images/location.png</file>
+<file>images/breakpoint.png</file>
+<file>images/d_breakpoint.png</file>
+
+<file>images/mac/closetab.png</file>
+<file>images/mac/next.png</file>
+<file>images/mac/previous.png</file>
+<file>images/mac/plus.png</file>
+<file>images/win/closetab.png</file>
+<file>images/win/next.png</file>
+<file>images/win/previous.png</file>
+<file>images/win/plus.png</file>
+<file>images/wrap.png</file>
+<file>images/find.png</file>
+<file>images/new.png</file>
+<file>images/delete.png</file>
+
+</qresource>
+</RCC>
author	Qt by Nokia <qt-info@nokia.com>	2011-04-27 12:05:43 +0200
committer	axis <qt-info@nokia.com>	2011-04-27 12:05:43 +0200
commit	c4af45c2914381172e1bd7ee528481edaa2fff1a (patch)
tree	01265e109316fda93845e1c96c5e566d870f51d0 /src/scripttools/debugging
download	qtscript-c4af45c2914381172e1bd7ee528481edaa2fff1a.tar.gz