Long live Qt 4.5!

8 files changed, 888 insertions, 0 deletions

diff --git a/tools/designer/src/lib/extension/default_extensionfactory.cpp b/tools/designer/src/lib/extension/default_extensionfactory.cpp
new file mode 100644
index 0000000000..a96783acd8
--- /dev/null
+++ b/tools/designer/src/lib/extension/default_extensionfactory.cpp
@@ -0,0 +1,178 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the Qt Designer 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtDesigner/default_extensionfactory.h>
+#include "qextensionmanager.h"
+#include <qpointer.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QExtensionFactory
+
+    \brief The QExtensionFactory class allows you to create a factory
+    that is able to make instances of custom extensions in Qt
+    Designer.
+
+    \inmodule QtDesigner
+
+    In \QD the extensions are not created until they are required. For
+    that reason, when implementing a custom extension, you must also
+    create a QExtensionFactory, i.e. a class that is able to make an
+    instance of your extension, and register it using \QD's \l
+    {QExtensionManager}{extension manager}.
+
+    The QExtensionManager class provides extension management
+    facilities for Qt Designer. When an extension is required, Qt
+    Designer's \l {QExtensionManager}{extension manager} will run
+    through all its registered factories calling
+    QExtensionFactory::createExtension() for each until the first one
+    that is able to create a requested extension for the selected
+    object, is found. This factory will then make an instance of the
+    extension.
+
+    There are four available types of extensions in Qt Designer:
+    QDesignerContainerExtension , QDesignerMemberSheetExtension,
+    QDesignerPropertySheetExtension and QDesignerTaskMenuExtension. Qt
+    Designer's behavior is the same whether the requested extension is
+    associated with a multi page container, a member sheet, a property
+    sheet or a task menu.
+
+    You can either create a new QExtensionFactory and reimplement the
+    QExtensionFactory::createExtension() function. For example:
+
+    \snippet doc/src/snippets/code/tools_designer_src_lib_extension_default_extensionfactory.cpp 0
+
+    Or you can use an existing factory, expanding the
+    QExtensionFactory::createExtension() function to make the factory
+    able to create your extension as well. For example:
+
+    \snippet doc/src/snippets/code/tools_designer_src_lib_extension_default_extensionfactory.cpp 1
+
+    For a complete example using the QExtensionFactory class, see the
+    \l {designer/taskmenuextension}{Task Menu Extension example}. The
+    example shows how to create a custom widget plugin for Qt
+    Designer, and how to to use the QDesignerTaskMenuExtension class
+    to add custom items to Qt Designer's task menu.
+
+    \sa QExtensionManager, QAbstractExtensionFactory
+*/
+
+/*!
+    Constructs an extension factory with the given \a parent.
+*/
+QExtensionFactory::QExtensionFactory(QExtensionManager *parent)
+    : QObject(parent)
+{
+}
+
+/*!
+    Returns the extension specified by \a iid for the given \a object.
+
+    \sa createExtension()
+*/
+
+QObject *QExtensionFactory::extension(QObject *object, const QString &iid) const
+{
+    if (!object)
+        return 0;
+    const IdObjectKey key = qMakePair(iid, object);
+
+    ExtensionMap::iterator it = m_extensions.find(key);
+    if (it == m_extensions.end()) {
+        if (QObject *ext = createExtension(object, iid, const_cast<QExtensionFactory*>(this))) {
+            connect(ext, SIGNAL(destroyed(QObject*)), this, SLOT(objectDestroyed(QObject*)));
+            it = m_extensions.insert(key, ext);
+        }
+    }
+
+    if (!m_extended.contains(object)) {
+        connect(object, SIGNAL(destroyed(QObject*)), this, SLOT(objectDestroyed(QObject*)));
+        m_extended.insert(object, true);
+    }
+
+    if (it == m_extensions.end())
+        return 0;
+
+    return it.value();
+}
+
+void QExtensionFactory::objectDestroyed(QObject *object)
+{
+    QMutableMapIterator< IdObjectKey, QObject*> it(m_extensions);
+    while (it.hasNext()) {
+        it.next();
+
+        QObject *o = it.key().second;
+        if (o == object || object == it.value()) {
+            it.remove();
+        }
+    }
+
+    m_extended.remove(object);
+}
+
+/*!
+    Creates an extension specified by \a iid for the given \a object.
+    The extension object is created as a child of the specified \a
+    parent.
+
+    \sa extension()
+*/
+QObject *QExtensionFactory::createExtension(QObject *object, const QString &iid, QObject *parent) const
+{
+    Q_UNUSED(object);
+    Q_UNUSED(iid);
+    Q_UNUSED(parent);
+
+    return 0;
+}
+
+/*!
+    Returns the extension manager for the extension factory.
+*/
+QExtensionManager *QExtensionFactory::extensionManager() const
+{
+    return static_cast<QExtensionManager *>(parent());
+}
+
+QT_END_NAMESPACE
diff --git a/tools/designer/src/lib/extension/default_extensionfactory.h b/tools/designer/src/lib/extension/default_extensionfactory.h
new file mode 100644
index 0000000000..1966c91fbd
--- /dev/null
+++ b/tools/designer/src/lib/extension/default_extensionfactory.h
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the Qt Designer 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef DEFAULT_EXTENSIONFACTORY_H
+#define DEFAULT_EXTENSIONFACTORY_H
+
+#include <QtDesigner/extension_global.h>
+#include <QtDesigner/extension.h>
+
+#include <QtCore/QMap>
+#include <QtCore/QHash>
+#include <QtCore/QPair>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QExtensionManager;
+
+class QDESIGNER_EXTENSION_EXPORT QExtensionFactory : public QObject, public QAbstractExtensionFactory
+{
+    Q_OBJECT
+    Q_INTERFACES(QAbstractExtensionFactory)
+public:
+    QExtensionFactory(QExtensionManager *parent = 0);
+
+    virtual QObject *extension(QObject *object, const QString &iid) const;
+    QExtensionManager *extensionManager() const;
+
+private Q_SLOTS:
+    void objectDestroyed(QObject *object);
+
+protected:
+    virtual QObject *createExtension(QObject *object, const QString &iid, QObject *parent) const;
+
+private:
+    typedef QPair<QString,QObject*> IdObjectKey;
+    typedef QMap< IdObjectKey, QObject*> ExtensionMap;
+    mutable ExtensionMap m_extensions;
+    typedef QHash<QObject*, bool> ExtendedSet;
+    mutable ExtendedSet m_extended;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // DEFAULT_EXTENSIONFACTORY_H
diff --git a/tools/designer/src/lib/extension/extension.cpp b/tools/designer/src/lib/extension/extension.cpp
new file mode 100644
index 0000000000..7ff13d0727
--- /dev/null
+++ b/tools/designer/src/lib/extension/extension.cpp
@@ -0,0 +1,186 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the Qt Designer 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtDesigner/extension.h>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QAbstractExtensionFactory
+
+    \brief The QAbstractExtensionFactory class provides an interface
+    for extension factories in Qt Designer.
+
+    \inmodule QtDesigner
+
+    QAbstractExtensionFactory is not intended to be instantiated
+    directly; use the QExtensionFactory instead.
+
+    In \QD, extension factories are used to look up and create named
+    extensions as they are required. For that reason, when
+    implementing a custom extension, you must also create a
+    QExtensionFactory, i.e a class that is able to make an instance of
+    your extension, and register it using \QD's \l
+    {QExtensionManager}{extension manager}.
+
+    When an extension is required, \QD's \l
+    {QExtensionManager}{extension manager} will run through all its
+    registered factories calling QExtensionFactory::createExtension()
+    for each until the first one that is able to create the requested
+    extension for the selected object, is found. This factory will
+    then make an instance of the extension.
+
+    \sa QExtensionFactory, QExtensionManager
+*/
+
+/*!
+    \fn QAbstractExtensionFactory::~QAbstractExtensionFactory()
+
+    Destroys the extension factory.
+*/
+
+/*!
+    \fn QObject *QAbstractExtensionFactory::extension(QObject *object, const QString &iid) const
+
+    Returns the extension specified by \a iid for the given \a object.
+*/
+
+
+/*!
+    \class QAbstractExtensionManager
+
+    \brief The QAbstractExtensionManager class provides an interface
+    for extension managers in Qt Designer.
+
+    \inmodule QtDesigner
+
+    QAbstractExtensionManager is not intended to be instantiated
+    directly; use the QExtensionManager instead.
+
+    In \QD, extension are not created until they are required. For
+    that reason, when implementing a custom extension, you must also
+    create a QExtensionFactory, i.e a class that is able to make an
+    instance of your extension, and register it using \QD's \l
+    {QExtensionManager}{extension manager}.
+
+    When an extension is required, \QD's \l
+    {QExtensionManager}{extension manager} will run through all its
+    registered factories calling QExtensionFactory::createExtension()
+    for each until the first one that is able to create the requested
+    extension for the selected object, is found. This factory will
+    then make an instance of the extension.
+
+    \sa QExtensionManager, QExtensionFactory
+*/
+
+/*!
+    \fn QAbstractExtensionManager::~QAbstractExtensionManager()
+
+    Destroys the extension manager.
+*/
+
+/*!
+    \fn void QAbstractExtensionManager::registerExtensions(QAbstractExtensionFactory *factory, const QString &iid)
+
+    Register the given extension \a factory with the extension
+    specified by \a iid.
+*/
+
+/*!
+    \fn void QAbstractExtensionManager::unregisterExtensions(QAbstractExtensionFactory *factory, const QString &iid)
+
+    Unregister the given \a factory with the extension specified by \a
+    iid.
+*/
+
+/*!
+    \fn QObject *QAbstractExtensionManager::extension(QObject *object, const QString &iid) const
+
+    Returns the extension, specified by \a iid, for the given \a
+    object.
+*/
+
+/*!
+   \fn T qt_extension(QAbstractExtensionManager* manager, QObject *object)
+
+   \relates QExtensionManager
+
+   Returns the extension of the given \a object cast to type T if the
+   object is of type T (or of a subclass); otherwise returns 0. The
+   extension is retrieved using the given extension \a manager.
+
+   \snippet doc/src/snippets/code/tools_designer_src_lib_extension_extension.cpp 0
+
+   When implementing a custom widget plugin, a pointer to \QD's
+   current QDesignerFormEditorInterface object (\c formEditor) is
+   provided by the QDesignerCustomWidgetInterface::initialize()
+   function's parameter.
+
+   If the widget in the example above doesn't have a defined
+   QDesignerPropertySheetExtension, \c propertySheet will be a null
+   pointer.
+
+*/
+
+/*!
+   \macro Q_DECLARE_EXTENSION_INTERFACE(ExtensionName, Identifier)
+
+   \relates QExtensionManager
+
+   Associates the given \a Identifier (a string literal) to the
+   extension class called \a ExtensionName. The \a Identifier must be
+   unique. For example:
+
+   \snippet doc/src/snippets/code/tools_designer_src_lib_extension_extension.cpp 1
+
+   Using the company and product names is a good way to ensure
+   uniqueness of the identifier.
+
+   When implementing a custom extension class, you must use
+   Q_DECLARE_EXTENSION_INTERFACE() to enable usage of the
+   qt_extension() function. The macro is normally located right after the
+   class definition for \a ExtensionName, in the associated header
+   file.
+
+   \sa Q_DECLARE_INTERFACE()
+*/
+
+QT_END_NAMESPACE
diff --git a/tools/designer/src/lib/extension/extension.h b/tools/designer/src/lib/extension/extension.h
new file mode 100644
index 0000000000..1ccd4efac2
--- /dev/null
+++ b/tools/designer/src/lib/extension/extension.h
@@ -0,0 +1,109 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the Qt Designer 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef EXTENSION_H
+#define EXTENSION_H
+
+#include <QtCore/QString>
+#include <QtCore/QObject>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+#define Q_TYPEID(IFace) QLatin1String(IFace##_iid)
+
+class QAbstractExtensionFactory
+{
+public:
+    virtual ~QAbstractExtensionFactory() {}
+
+    virtual QObject *extension(QObject *object, const QString &iid) const = 0;
+};
+Q_DECLARE_INTERFACE(QAbstractExtensionFactory, "com.trolltech.Qt.QAbstractExtensionFactory")
+
+class QAbstractExtensionManager
+{
+public:
+    virtual ~QAbstractExtensionManager() {}
+
+    virtual void registerExtensions(QAbstractExtensionFactory *factory, const QString &iid) = 0;
+    virtual void unregisterExtensions(QAbstractExtensionFactory *factory, const QString &iid) = 0;
+
+    virtual QObject *extension(QObject *object, const QString &iid) const = 0;
+};
+Q_DECLARE_INTERFACE(QAbstractExtensionManager, "com.trolltech.Qt.QAbstractExtensionManager")
+
+#if defined(Q_CC_MSVC) && (_MSC_VER < 1300)
+
+template <class T>
+inline T qt_extension_helper(QAbstractExtensionManager *, QObject *, T)
+{ return 0; }
+
+template <class T>
+inline T qt_extension(QAbstractExtensionManager* manager, QObject *object)
+{ return qt_extension_helper(manager, object, T(0)); }
+
+#define Q_DECLARE_EXTENSION_INTERFACE(IFace, IId) \
+const char * const IFace##_iid = IId; \
+Q_DECLARE_INTERFACE(IFace, IId) \
+template <> inline IFace *qt_extension_helper<IFace *>(QAbstractExtensionManager *manager, QObject *object, IFace *) \
+{ QObject *extension = manager->extension(object, Q_TYPEID(IFace)); return (IFace *)(extension ? extension->qt_metacast(IFace##_iid) : 0); }
+
+#else
+
+template <class T>
+inline T qt_extension(QAbstractExtensionManager* manager, QObject *object)
+{ return 0; }
+
+#define Q_DECLARE_EXTENSION_INTERFACE(IFace, IId) \
+const char * const IFace##_iid = IId; \
+Q_DECLARE_INTERFACE(IFace, IId) \
+template <> inline IFace *qt_extension<IFace *>(QAbstractExtensionManager *manager, QObject *object) \
+{ QObject *extension = manager->extension(object, Q_TYPEID(IFace)); return extension ? static_cast<IFace *>(extension->qt_metacast(IFace##_iid)) : static_cast<IFace *>(0); }
+
+#endif
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // EXTENSION_H
diff --git a/tools/designer/src/lib/extension/extension.pri b/tools/designer/src/lib/extension/extension.pri
new file mode 100644
index 0000000000..d8ef658f25
--- /dev/null
+++ b/tools/designer/src/lib/extension/extension.pri
@@ -0,0 +1,12 @@
+# Input
+
+INCLUDEPATH += $$PWD
+
+HEADERS += $$PWD/default_extensionfactory.h \
+           $$PWD/extension.h \
+           $$PWD/qextensionmanager.h
+
+SOURCES += $$PWD/default_extensionfactory.cpp \
+    $$PWD/extension.cpp \
+    $$PWD/qextensionmanager.cpp
+
diff --git a/tools/designer/src/lib/extension/extension_global.h b/tools/designer/src/lib/extension/extension_global.h
new file mode 100644
index 0000000000..abd18d81d3
--- /dev/null
+++ b/tools/designer/src/lib/extension/extension_global.h
@@ -0,0 +1,64 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the Qt Designer 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef EXTENSION_GLOBAL_H
+#define EXTENSION_GLOBAL_H
+
+#include <QtCore/qglobal.h>
+
+QT_BEGIN_HEADER
+QT_BEGIN_NAMESPACE
+
+#define QDESIGNER_EXTENSION_EXTERN Q_DECL_EXPORT
+#define QDESIGNER_EXTENSION_IMPORT Q_DECL_IMPORT
+
+#ifdef QT_DESIGNER_STATIC
+#  define QDESIGNER_EXTENSION_EXPORT
+#elif defined(QDESIGNER_EXTENSION_LIBRARY)
+#  define QDESIGNER_EXTENSION_EXPORT QDESIGNER_EXTENSION_EXTERN
+#else
+#  define QDESIGNER_EXTENSION_EXPORT QDESIGNER_EXTENSION_IMPORT
+#endif
+
+QT_END_NAMESPACE
+QT_END_HEADER
+
+#endif // EXTENSION_GLOBAL_H
diff --git a/tools/designer/src/lib/extension/qextensionmanager.cpp b/tools/designer/src/lib/extension/qextensionmanager.cpp
new file mode 100644
index 0000000000..686c0917d6
--- /dev/null
+++ b/tools/designer/src/lib/extension/qextensionmanager.cpp
@@ -0,0 +1,174 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the Qt Designer 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qextensionmanager.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QExtensionManager
+
+    \brief The QExtensionManager class provides extension management
+    facilities for Qt Designer.
+
+    \inmodule QtDesigner
+
+    In \QD the extensions are not created until they are required. For
+    that reason, when implementing an extension, you must also create
+    a QExtensionFactory, i.e a class that is able to make an instance
+    of your extension, and register it using \QD's extension manager.
+
+    The registration of an extension factory is typically made in the
+    QDesignerCustomWidgetInterface::initialize() function:
+
+    \snippet doc/src/snippets/code/tools_designer_src_lib_extension_qextensionmanager.cpp 0
+
+    The QExtensionManager is not intended to be instantiated
+    directly. You can retrieve an interface to \QD's extension manager
+    using the QDesignerFormEditorInterface::extensionManager()
+    function. A pointer to \QD's current QDesignerFormEditorInterface
+    object (\c formEditor in the example above) is provided by the
+    QDesignerCustomWidgetInterface::initialize() function's
+    parameter. When implementing a custom widget plugin, you must
+    subclass the QDesignerCustomWidgetInterface to expose your plugin
+    to \QD.
+
+    Then, when an extension is required, \QD's extension manager will
+    run through all its registered factories calling
+    QExtensionFactory::createExtension() for each until the first one
+    that is able to create the requested extension for the selected
+    object, is found. This factory will then make an instance of the
+    extension.
+
+    There are four available types of extensions in \QD:
+    QDesignerContainerExtension , QDesignerMemberSheetExtension,
+    QDesignerPropertySheetExtension and
+    QDesignerTaskMenuExtension. \QD's behavior is the same whether the
+    requested extension is associated with a container, a member
+    sheet, a property sheet or a task menu.
+
+    For a complete example using the QExtensionManager class, see the
+    \l {designer/taskmenuextension}{Task Menu Extension example}. The
+    example shows how to create a custom widget plugin for Qt
+    Designer, and how to to use the QDesignerTaskMenuExtension class
+    to add custom items to \QD's task menu.
+
+    \sa QExtensionFactory, QAbstractExtensionManager
+*/
+
+/*!
+    Constructs an extension manager with the given \a parent.
+*/
+QExtensionManager::QExtensionManager(QObject *parent)
+    : QObject(parent)
+{
+}
+
+
+/*!
+  Destroys the extension manager
+*/
+QExtensionManager::~QExtensionManager()
+{
+}
+
+/*!
+    Register the extension specified by the given \a factory and
+    extension identifier \a iid.
+*/
+void QExtensionManager::registerExtensions(QAbstractExtensionFactory *factory, const QString &iid)
+{
+    if (iid.isEmpty()) {
+        m_globalExtension.prepend(factory);
+        return;
+    }
+
+    FactoryMap::iterator it = m_extensions.find(iid);
+    if (it == m_extensions.end())
+        it = m_extensions.insert(iid, FactoryList());
+
+    it.value().prepend(factory);
+}
+
+/*!
+    Unregister the extension specified by the given \a factory and
+    extension identifier \a iid.
+*/
+void QExtensionManager::unregisterExtensions(QAbstractExtensionFactory *factory, const QString &iid)
+{
+    if (iid.isEmpty()) {
+        m_globalExtension.removeAll(factory);
+        return;
+    }
+
+    const FactoryMap::iterator it = m_extensions.find(iid);
+    if (it == m_extensions.end())
+        return;
+
+    FactoryList &factories = it.value();
+    factories.removeAll(factory);
+
+    if (factories.isEmpty())
+        m_extensions.erase(it);
+}
+
+/*!
+    Returns the extension specified by \a iid, for the given \a
+    object.
+*/
+QObject *QExtensionManager::extension(QObject *object, const QString &iid) const
+{
+    const FactoryMap::const_iterator it = m_extensions.constFind(iid);
+    if (it != m_extensions.constEnd()) {
+        const FactoryList::const_iterator fcend = it.value().constEnd();
+        for (FactoryList::const_iterator fit = it.value().constBegin(); fit != fcend; ++fit)
+            if (QObject *ext = (*fit)->extension(object, iid))
+                return ext;
+    }
+    const FactoryList::const_iterator gfcend =  m_globalExtension.constEnd();
+    for (FactoryList::const_iterator git = m_globalExtension.constBegin(); git != gfcend; ++git)
+        if (QObject *ext = (*git)->extension(object, iid))
+            return ext;
+
+    return 0;
+}
+
+QT_END_NAMESPACE
diff --git a/tools/designer/src/lib/extension/qextensionmanager.h b/tools/designer/src/lib/extension/qextensionmanager.h
new file mode 100644
index 0000000000..a5b727f61a
--- /dev/null
+++ b/tools/designer/src/lib/extension/qextensionmanager.h
@@ -0,0 +1,79 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the Qt Designer 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QEXTENSIONMANAGER_H
+#define QEXTENSIONMANAGER_H
+
+#include <QtDesigner/extension_global.h>
+#include <QtDesigner/extension.h>
+#include <QtCore/QHash>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QObject; // Fool syncqt
+
+class QDESIGNER_EXTENSION_EXPORT QExtensionManager: public QObject, public QAbstractExtensionManager
+{
+    Q_OBJECT
+    Q_INTERFACES(QAbstractExtensionManager)
+public:
+    QExtensionManager(QObject *parent = 0);
+    ~QExtensionManager();
+
+    virtual void registerExtensions(QAbstractExtensionFactory *factory, const QString &iid = QString());
+    virtual void unregisterExtensions(QAbstractExtensionFactory *factory, const QString &iid = QString());
+
+    virtual QObject *extension(QObject *object, const QString &iid) const;
+
+private:
+    typedef QList<QAbstractExtensionFactory*> FactoryList;
+    typedef QHash<QString, FactoryList> FactoryMap;
+    FactoryMap m_extensions;
+    FactoryList m_globalExtension;
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QEXTENSIONMANAGER_H