VCS[cvs,subversion]: Add diff options and enable reverting chunks.

Create VCSBaseEditorParameterWidget as a base class for setting
the diff arguments lists and wire it up to trigger a re-run
of diff on reverting. Enable reverting of chunks for cvs,
subversion.

7 files changed, 456 insertions, 30 deletions

diff --git a/src/plugins/cvs/cvsplugin.cpp b/src/plugins/cvs/cvsplugin.cpp
index 32731d8aab..26b4c52026 100644
--- a/src/plugins/cvs/cvsplugin.cpp
+++ b/src/plugins/cvs/cvsplugin.cpp
@@ -43,9 +43,11 @@
 #include <vcsbase/vcsbaseeditor.h>
 #include <vcsbase/basevcssubmiteditorfactory.h>
 #include <vcsbase/vcsbaseoutputwindow.h>
+#include <vcsbase/vcsbaseeditorparameterwidget.h>
 #include <locator/commandlocator.h>
 #include <utils/synchronousprocess.h>
 #include <utils/parameteraction.h>
+#include <utils/qtcassert.h>
 
 #include <coreplugin/icore.h>
 #include <coreplugin/coreconstants.h>
@@ -529,22 +531,79 @@ static inline void setDiffBaseDirectory(Core::IEditor *editor, const QString &db
         ve->setDiffBaseDirectory(db);
 }
 
+// Collect all parameters required for a diff to be able to associate them
+// with a diff editor and re-run the diff with parameters.
+struct CvsDiffParameters
+{
+    CvsDiffParameters() : reUseEditor(false) {}
+
+    QString workingDir;
+    QStringList arguments;
+    QStringList files;
+    bool reUseEditor;
+};
+
+// Parameter widget controlling whitespace diff mode, associated with a parameter
+// struct.
+class CvsDiffParameterWidget : public VCSBase::VCSBaseEditorParameterWidget
+{
+    Q_OBJECT
+public:
+    explicit CvsDiffParameterWidget(const CvsDiffParameters &p, QWidget *parent = 0);
+
+signals:
+    void reRunDiff(const CVS::Internal::CvsDiffParameters &);
+
+public slots:
+    void triggerReRun();
+
+private:
+    const CvsDiffParameters m_parameters;
+};
+
+CvsDiffParameterWidget::CvsDiffParameterWidget(const CvsDiffParameters &p, QWidget *parent) :
+    VCSBase::VCSBaseEditorParameterWidget(parent), m_parameters(p)
+{
+    setBaseArguments(p.arguments);
+    addIgnoreWhiteSpaceButton(QLatin1String("-w"));
+    addIgnoreBlankLinesButton(QLatin1String("-B"));
+    connect(this, SIGNAL(argumentsChanged()),
+            this, SLOT(triggerReRun()));
+}
+
+void CvsDiffParameterWidget::triggerReRun()
+{
+    CvsDiffParameters effectiveParameters = m_parameters;
+    effectiveParameters.reUseEditor = true;
+    effectiveParameters.arguments = arguments();
+    emit reRunDiff(effectiveParameters);
+}
+
 void CVSPlugin::cvsDiff(const QString &workingDir, const QStringList &files)
 {
+    CvsDiffParameters p;
+    p.workingDir = workingDir;
+    p.files = files;
+    p.arguments = m_settings.cvsDiffOptions.split(QLatin1Char(' '), QString::SkipEmptyParts);
+    cvsDiff(p);
+}
+
+void CVSPlugin::cvsDiff(const CvsDiffParameters &p)
+{
     if (CVS::Constants::debug)
-        qDebug() << Q_FUNC_INFO << files;
-    const QString source = VCSBase::VCSBaseEditorWidget::getSource(workingDir, files);
-    QTextCodec *codec = VCSBase::VCSBaseEditorWidget::getCodec(workingDir, files);
-    const QString id = VCSBase::VCSBaseEditorWidget::getTitleId(workingDir, files);
+        qDebug() << Q_FUNC_INFO << p.files;
+    const QString source = VCSBase::VCSBaseEditorWidget::getSource(p.workingDir, p.files);
+    QTextCodec *codec = VCSBase::VCSBaseEditorWidget::getCodec(p.workingDir, p.files);
+    const QString id = VCSBase::VCSBaseEditorWidget::getTitleId(p.workingDir, p.files);
 
     QStringList args(QLatin1String("diff"));
-    args << m_settings.cvsDiffOptions;
-    args.append(files);
+    args.append(p.arguments);
+    args.append(p.files);
 
     // CVS returns the diff exit code (1 if files differ), which is
     // undistinguishable from a "file not found" error, unfortunately.
     const CVSResponse response =
-            runCVS(workingDir, args, m_settings.timeOutMS(), 0, codec);
+            runCVS(p.workingDir, args, m_settings.timeOutMS(), 0, codec);
     switch (response.result) {
     case CVSResponse::NonNullExitCode:
     case CVSResponse::Ok:
@@ -558,20 +617,31 @@ void CVSPlugin::cvsDiff(const QString &workingDir, const QStringList &files)
         output = tr("The files do not differ.");
     // diff of a single file? re-use an existing view if possible to support
     // the common usage pattern of continuously changing and diffing a file
-    if (files.count() == 1) {
+    if (p.files.count() == 1 || p.reUseEditor) {
         // Show in the same editor if diff has been executed before
         if (Core::IEditor *editor = locateEditor("originalFileName", id)) {
             editor->createNew(output);
             Core::EditorManager::instance()->activateEditor(editor, Core::EditorManager::ModeSwitch);
-            setDiffBaseDirectory(editor, workingDir);
+            setDiffBaseDirectory(editor, p.workingDir);
             return;
         }
     }
     const QString title = QString::fromLatin1("cvs diff %1").arg(id);
     Core::IEditor *editor = showOutputInEditor(title, output, VCSBase::DiffOutput, source, codec);
-    if (files.count() == 1)
-        editor->setProperty("originalFileName", id);
-    setDiffBaseDirectory(editor, workingDir);
+    editor->setProperty("originalFileName", id);
+    setDiffBaseDirectory(editor, p.workingDir);
+    CVSEditor *diffEditorWidget = qobject_cast<CVSEditor*>(editor->widget());
+    QTC_ASSERT(diffEditorWidget, return ; )
+
+    // Wire up the parameter widget to trigger a re-run on
+    // parameter change and 'revert' from inside the diff editor.
+    diffEditorWidget->setRevertDiffChunkEnabled(true);
+    CvsDiffParameterWidget *pw = new CvsDiffParameterWidget(p);
+    connect(pw, SIGNAL(reRunDiff(CVS::Internal::CvsDiffParameters)),
+            this, SLOT(cvsDiff(CVS::Internal::CvsDiffParameters)));
+    connect(diffEditorWidget, SIGNAL(diffChunkReverted(VCSBase::DiffChunk)),
+            pw, SLOT(triggerReRun()));
+    diffEditorWidget->setConfigurationWidget(pw);
 }
 
 CVSSubmitEditor *CVSPlugin::openCVSSubmitEditor(const QString &fileName)
@@ -1339,3 +1409,5 @@ CVSControl *CVSPlugin::cvsVersionControl() const
 }
 }
 Q_EXPORT_PLUGIN(CVS::Internal::CVSPlugin)
+
+#include "cvsplugin.moc"
diff --git a/src/plugins/cvs/cvsplugin.h b/src/plugins/cvs/cvsplugin.h
index eae5ea975b..fbfa5dd643 100644
--- a/src/plugins/cvs/cvsplugin.h
+++ b/src/plugins/cvs/cvsplugin.h
@@ -64,7 +64,7 @@ namespace Locator {
 
 namespace CVS {
 namespace Internal {
-
+struct CvsDiffParameters;
 class CVSSubmitEditor;
 class CVSControl;
 
@@ -132,6 +132,7 @@ private slots:
     void editCurrentFile();
     void uneditCurrentFile();
     void uneditCurrentRepository();
+    void cvsDiff(const CVS::Internal::CvsDiffParameters &p);
 
 protected:
     virtual void updateActions(VCSBase::VCSBasePlugin::ActionState);
diff --git a/src/plugins/subversion/subversionplugin.cpp b/src/plugins/subversion/subversionplugin.cpp
index 76eabf8f2d..b0c4a7600f 100644
--- a/src/plugins/subversion/subversionplugin.cpp
+++ b/src/plugins/subversion/subversionplugin.cpp
@@ -45,6 +45,7 @@
 #include <vcsbase/vcsbaseeditor.h>
 #include <vcsbase/basevcssubmiteditorfactory.h>
 #include <vcsbase/vcsbaseoutputwindow.h>
+#include <vcsbase/vcsbaseeditorparameterwidget.h>
 #include <utils/synchronousprocess.h>
 #include <utils/parameteraction.h>
 
@@ -80,7 +81,8 @@
 #include <QtXml/QXmlStreamReader>
 #include <limits.h>
 
-using namespace Subversion::Internal;
+namespace Subversion {
+namespace Internal {
 
 static const char * const CMD_ID_SUBVERSION_MENU    = "Subversion.Menu";
 static const char * const CMD_ID_ADD                = "Subversion.Add";
@@ -534,6 +536,55 @@ void SubversionPlugin::diffCommitFiles(const QStringList &files)
     svnDiff(m_commitRepository, files);
 }
 
+// Collect all parameters required for a diff to be able to associate them
+// with a diff editor and re-run the diff with parameters.
+struct SubversionDiffParameters
+{
+    SubversionDiffParameters() : reUseEditor(false) {}
+
+    QString workingDir;
+    QStringList arguments;
+    QStringList files;
+    QString diffName;
+    bool reUseEditor;
+};
+
+// Parameter widget controlling whitespace diff mode, associated with a parameter
+class SubversionDiffParameterWidget : public VCSBase::VCSBaseEditorParameterWidget
+{
+    Q_OBJECT
+public:
+    explicit SubversionDiffParameterWidget(const SubversionDiffParameters &p, QWidget *parent = 0);
+
+signals:
+    void reRunDiff(const Subversion::Internal::SubversionDiffParameters &);
+
+private slots:
+    void triggerReRun();
+
+private:
+    const SubversionDiffParameters m_parameters;
+};
+
+SubversionDiffParameterWidget::SubversionDiffParameterWidget(const SubversionDiffParameters &p, QWidget *parent) :
+    VCSBase::VCSBaseEditorParameterWidget(parent), m_parameters(p)
+{
+    setBaseArguments(p.arguments);
+    addIgnoreWhiteSpaceButton(QString(QLatin1Char('w')));
+    connect(this, SIGNAL(argumentsChanged()), this, SLOT(triggerReRun()));
+}
+
+void SubversionDiffParameterWidget::triggerReRun()
+{
+    SubversionDiffParameters effectiveParameters = m_parameters;
+    effectiveParameters.reUseEditor = true;
+    // Subversion wants" -x -<ext-args>", default being -u
+    const QStringList a = arguments();
+    if (!a.isEmpty())
+        effectiveParameters.arguments << QLatin1String("-x") << (QLatin1String("-u") + a.join(QString()));
+    emit reRunDiff(effectiveParameters);
+}
+
 static inline void setDiffBaseDirectory(Core::IEditor *editor, const QString &db)
 {
     if (VCSBase::VCSBaseEditorWidget *ve = qobject_cast<VCSBase::VCSBaseEditorWidget*>(editor->widget()))
@@ -542,38 +593,59 @@ static inline void setDiffBaseDirectory(Core::IEditor *editor, const QString &db
 
 void SubversionPlugin::svnDiff(const QString &workingDir, const QStringList &files, QString diffname)
 {
+    SubversionDiffParameters p;
+    p.workingDir = workingDir;
+    p.files = files;
+    p.diffName = diffname;
+    svnDiff(p);
+}
+
+void SubversionPlugin::svnDiff(const Subversion::Internal::SubversionDiffParameters &p)
+{
     if (Subversion::Constants::debug)
-        qDebug() << Q_FUNC_INFO << files << diffname;
-    const QString source = VCSBase::VCSBaseEditorWidget::getSource(workingDir, files);
+        qDebug() << Q_FUNC_INFO << p.files << p.diffName;
+    const QString source = VCSBase::VCSBaseEditorWidget::getSource(p.workingDir, p.files);
     QTextCodec *codec = source.isEmpty() ? static_cast<QTextCodec *>(0) : VCSBase::VCSBaseEditorWidget::getCodec(source);
 
-    if (files.count() == 1 && diffname.isEmpty())
-        diffname = QFileInfo(files.front()).fileName();
+    const QString diffName = p.files.count() == 1 && p.diffName.isEmpty() ?
+                             QFileInfo(p.files.front()).fileName() : p.diffName;
 
     QStringList args(QLatin1String("diff"));
-    args << files;
+    args.append(p.arguments);
+    args << p.files;
 
     const SubversionResponse response =
-            runSvn(workingDir, args, m_settings.timeOutMS(), 0, codec);
+            runSvn(p.workingDir, args, m_settings.timeOutMS(), 0, codec);
     if (response.error)
         return;
 
     // diff of a single file? re-use an existing view if possible to support
     // the common usage pattern of continuously changing and diffing a file
-    if (files.count() == 1) {
+    if (p.files.count() == 1 || p.reUseEditor) {
         // Show in the same editor if diff has been executed before
-        if (Core::IEditor *editor = locateEditor("originalFileName", files.front())) {
+        if (Core::IEditor *editor = locateEditor("originalFileName", p.files.front())) {
             editor->createNew(response.stdOut);
             Core::EditorManager::instance()->activateEditor(editor, Core::EditorManager::ModeSwitch);
-            setDiffBaseDirectory(editor, workingDir);
+            setDiffBaseDirectory(editor, p.workingDir);
             return;
         }
     }
-    const QString title = QString::fromLatin1("svn diff %1").arg(diffname);
+    const QString title = QString::fromLatin1("svn diff %1").arg(diffName);
     Core::IEditor *editor = showOutputInEditor(title, response.stdOut, VCSBase::DiffOutput, source, codec);
-    setDiffBaseDirectory(editor, workingDir);
-    if (files.count() == 1)
-        editor->setProperty("originalFileName", files.front());
+    setDiffBaseDirectory(editor, p.workingDir);
+    editor->setProperty("originalFileName", p.files.front());
+    SubversionEditor *diffEditorWidget = qobject_cast<SubversionEditor *>(editor->widget());
+    QTC_ASSERT(diffEditorWidget, return ; )
+
+    // Wire up the parameter widget to trigger a re-run on
+    // parameter change and 'revert' from inside the diff editor.
+    diffEditorWidget->setRevertDiffChunkEnabled(true);
+    SubversionDiffParameterWidget *pw = new SubversionDiffParameterWidget(p);
+    connect(pw, SIGNAL(reRunDiff(Subversion::Internal::SubversionDiffParameters)),
+            this, SLOT(svnDiff(Subversion::Internal::SubversionDiffParameters)));
+    connect(diffEditorWidget, SIGNAL(diffChunkReverted(VCSBase::DiffChunk)),
+            pw, SLOT(triggerReRun()));
+    diffEditorWidget->setConfigurationWidget(pw);
 }
 
 SubversionSubmitEditor *SubversionPlugin::openSubversionSubmitEditor(const QString &fileName)
@@ -1350,4 +1422,9 @@ SubversionControl *SubversionPlugin::subVersionControl() const
     return static_cast<SubversionControl *>(versionControl());
 }
 
-Q_EXPORT_PLUGIN(SubversionPlugin)
+} // Internal
+} // Subversion
+
+Q_EXPORT_PLUGIN(Subversion::Internal::SubversionPlugin)
+
+#include "subversionplugin.moc"
diff --git a/src/plugins/subversion/subversionplugin.h b/src/plugins/subversion/subversionplugin.h
index 6e42633e0b..1804b2775e 100644
--- a/src/plugins/subversion/subversionplugin.h
+++ b/src/plugins/subversion/subversionplugin.h
@@ -66,6 +66,7 @@ namespace Internal {
 
 class SubversionSubmitEditor;
 class SubversionControl;
+struct SubversionDiffParameters;
 
 struct SubversionResponse
 {
@@ -113,6 +114,7 @@ public:
 public slots:
     void vcsAnnotate(const QString &workingDir, const QString &file,
                      const QString &revision = QString(), int lineNumber = -1);
+    void svnDiff(const Subversion::Internal::SubversionDiffParameters &p);
 
 private slots:
     void addCurrentFile();
diff --git a/src/plugins/vcsbase/vcsbase.pro b/src/plugins/vcsbase/vcsbase.pro
index d8341917f9..7e383f0738 100644
--- a/src/plugins/vcsbase/vcsbase.pro
+++ b/src/plugins/vcsbase/vcsbase.pro
@@ -30,7 +30,8 @@ HEADERS += vcsbase_global.h \
     vcsbaseoptionspage.h \
     vcsjobrunner.h \
     vcsbaseclient.h \
-    vcsbaseclientsettings.h
+    vcsbaseclientsettings.h \
+    vcsbaseeditorparameterwidget.h
 
 SOURCES += vcsplugin.cpp \
     vcsbaseplugin.cpp \
@@ -57,7 +58,8 @@ SOURCES += vcsplugin.cpp \
     vcsbaseoptionspage.cpp \
     vcsjobrunner.cpp \
     vcsbaseclient.cpp \
-    vcsbaseclientsettings.cpp
+    vcsbaseclientsettings.cpp \
+    vcsbaseeditorparameterwidget.cpp
 
 RESOURCES += vcsbase.qrc
 
diff --git a/src/plugins/vcsbase/vcsbaseeditorparameterwidget.cpp b/src/plugins/vcsbase/vcsbaseeditorparameterwidget.cpp
new file mode 100644
index 0000000000..4d29dd1460
--- /dev/null
+++ b/src/plugins/vcsbase/vcsbaseeditorparameterwidget.cpp
@@ -0,0 +1,192 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** 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.
+**
+**************************************************************************/
+
+#include "vcsbaseeditorparameterwidget.h"
+
+#include <QtGui/QToolButton>
+#include <QtGui/QHBoxLayout>
+
+#include <QtCore/QDebug>
+
+namespace VCSBase {
+namespace Internal {
+
+/*!
+    \class VCSBase::Internal::VCSBaseEditorParameterToggleButton
+
+    \brief ToggleButton to be inserted into VCSBase::VCSBaseEditorParameterWidget
+
+    Inserts a single option into the argument list depending on whether it is checked.
+*/
+
+class VCSBaseEditorParameterToggleButton : public QToolButton
+{
+    Q_OBJECT
+public:
+    explicit VCSBaseEditorParameterToggleButton(QWidget *parent = 0);
+
+    void applyToArguments(QStringList *w) const;
+    void setFromArguments(const QStringList &a);
+
+    void setOption(const QString &o)  { m_option = o; }
+    QString option() const { return m_option; }
+
+signals:
+    void changed();
+
+private:
+    QString m_option;
+};
+
+VCSBaseEditorParameterToggleButton::VCSBaseEditorParameterToggleButton(QWidget *parent) :
+    QToolButton(parent)
+{
+    setCheckable(true);
+    connect(this, SIGNAL(toggled(bool)), this, SIGNAL(changed()));
+}
+
+void VCSBaseEditorParameterToggleButton::applyToArguments(QStringList *a) const
+{
+    if (isChecked()) {
+        if (!a->contains(m_option))
+            a->append(m_option);
+    } else {
+        a->removeAll(m_option);
+    }
+}
+
+void VCSBaseEditorParameterToggleButton::setFromArguments(const QStringList &a)
+{
+    setChecked(a.contains(m_option));
+}
+
+} // namespace Internal
+
+class VCSBaseEditorParameterWidgetPrivate
+{
+public:
+    VCSBaseEditorParameterWidgetPrivate() : m_layout(0) {}
+
+    QStringList m_baseArguments;
+    QHBoxLayout *m_layout;
+    QList<Internal::VCSBaseEditorParameterToggleButton *> m_toggles;
+};
+
+/*!
+    \class VCSBase::VCSBaseEditorParameterWidget
+
+    \brief A toolbar-like widget for use with VCSBase::VCSBaseEditor::setConfigurationWidget()
+    influencing for example the generation of VCS diff output.
+
+    The widget maintains a list of command line arguments (starting from baseArguments())
+    which are set according to the state of the inside widgets. A change signal is provided
+    that should trigger the rerun of the VCS operation.
+*/
+
+VCSBaseEditorParameterWidget::VCSBaseEditorParameterWidget(QWidget *parent) :
+    QWidget(parent), d(new VCSBaseEditorParameterWidgetPrivate)
+{
+    d->m_layout = new QHBoxLayout(this);
+    d->m_layout->setContentsMargins(3, 0, 3, 0);
+    d->m_layout->setSpacing(2);
+}
+
+VCSBaseEditorParameterWidget::~VCSBaseEditorParameterWidget()
+{
+}
+
+QStringList VCSBaseEditorParameterWidget::baseArguments() const
+{
+    return d->m_baseArguments;
+}
+
+void VCSBaseEditorParameterWidget::setBaseArguments(const QStringList &b)
+{
+    d->m_baseArguments = b;
+}
+
+QStringList VCSBaseEditorParameterWidget::arguments() const
+{
+    // Compile effective arguments
+    QStringList args = d->m_baseArguments;
+    foreach (const Internal::VCSBaseEditorParameterToggleButton *tb, d->m_toggles)
+        tb->applyToArguments(&args);
+    return args;
+}
+
+void VCSBaseEditorParameterWidget::addToggleButton(const QString &option,
+                                                   const QString &label,
+                                                   const QString &toolTip)
+{
+    Internal::VCSBaseEditorParameterToggleButton *tb = new Internal::VCSBaseEditorParameterToggleButton;
+    tb->setOption(option);
+    tb->setText(label);
+    tb->setToolTip(toolTip);
+    connect(tb, SIGNAL(changed()), this, SIGNAL(argumentsChanged()));
+    d->m_layout->addWidget(tb);
+    d->m_toggles.append(tb);
+}
+
+void VCSBaseEditorParameterWidget::addIgnoreWhiteSpaceButton(const QString &option)
+{
+    addToggleButton(option, msgIgnoreWhiteSpaceLabel(), msgIgnoreWhiteSpaceToolTip());
+}
+
+void VCSBaseEditorParameterWidget::addIgnoreBlankLinesButton(const QString &option)
+{
+    addToggleButton(option, msgIgnoreBlankLinesLabel(), msgIgnoreBlankLinesToolTip());
+}
+
+QString VCSBaseEditorParameterWidget::msgIgnoreWhiteSpaceLabel()
+{
+    return tr("Ignore whitespace");
+}
+
+QString VCSBaseEditorParameterWidget::msgIgnoreWhiteSpaceToolTip()
+{
+    return tr("Ignore whitespace only changes");
+}
+
+QString VCSBaseEditorParameterWidget::msgIgnoreBlankLinesLabel()
+{
+    return tr("Ignore blank lines ");
+}
+
+QString VCSBaseEditorParameterWidget::msgIgnoreBlankLinesToolTip()
+{
+    return tr("Ignore changes in blank lines");
+}
+
+} // namespace VCSBase
+
+#include "vcsbaseeditorparameterwidget.moc"
diff --git a/src/plugins/vcsbase/vcsbaseeditorparameterwidget.h b/src/plugins/vcsbase/vcsbaseeditorparameterwidget.h
new file mode 100644
index 0000000000..cedaedfec1
--- /dev/null
+++ b/src/plugins/vcsbase/vcsbaseeditorparameterwidget.h
@@ -0,0 +1,80 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** 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.
+**
+**************************************************************************/
+
+#ifndef VCSBASE_VCSBASEEDITORPARAMETERWIDGET_H
+#define VCSBASE_VCSBASEEDITORPARAMETERWIDGET_H
+
+#include "vcsbase_global.h"
+
+#include <QtGui/QWidget>
+#include <QtCore/QStringList>
+
+namespace VCSBase {
+class VCSBaseEditorParameterWidgetPrivate;
+
+// Documentation->inside.
+class VCSBASE_EXPORT VCSBaseEditorParameterWidget : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit VCSBaseEditorParameterWidget(QWidget *parent = 0);
+    ~VCSBaseEditorParameterWidget();
+
+    QStringList baseArguments() const;
+    void setBaseArguments(const QStringList &);
+
+    void addToggleButton(const QString &option, const QString &label,
+                         const QString &tooltip = QString());
+    void addIgnoreWhiteSpaceButton(const QString &option);
+    void addIgnoreBlankLinesButton(const QString &option);
+
+    // Return the effective arguments according to setting.
+    QStringList arguments() const;
+
+    // Standard texts
+    static QString msgIgnoreWhiteSpaceLabel();
+    static QString msgIgnoreWhiteSpaceToolTip();
+    static QString msgIgnoreBlankLinesLabel();
+    static QString msgIgnoreBlankLinesToolTip();
+
+signals:
+    // Trigger a re-run to show changed output according to new argument list.
+    void argumentsChanged();
+
+private:
+    QScopedPointer<VCSBaseEditorParameterWidgetPrivate> d;
+};
+
+} // namespace VCSBase
+
+#endif // VCSBASE_VCSBASEEDITORPARAMETERWIDGET_H