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diff --git a/src/designer/src/components/formeditor/qmdiarea_container.h b/src/designer/src/components/formeditor/qmdiarea_container.h
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+/****************************************************************************
+**
+** 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 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 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 QMDIAREA_CONTAINER_H
+#define QMDIAREA_CONTAINER_H
+
+#include <QtDesigner/QDesignerContainerExtension>
+
+
+#include <qdesigner_propertysheet_p.h>
+#include <extensionfactory_p.h>
+
+#include <QtGui/QMdiArea>
+#include <QtGui/QWorkspace>
+
+QT_BEGIN_NAMESPACE
+
+namespace qdesigner_internal {
+
+// Container for QMdiArea
+class QMdiAreaContainer: public QObject, public QDesignerContainerExtension
+{
+    Q_OBJECT
+    Q_INTERFACES(QDesignerContainerExtension)
+public:
+    explicit QMdiAreaContainer(QMdiArea *widget, QObject *parent = 0);
+
+    virtual int count() const;
+    virtual QWidget *widget(int index) const;
+    virtual int currentIndex() const;
+    virtual void setCurrentIndex(int index);
+    virtual void addWidget(QWidget *widget);
+    virtual void insertWidget(int index, QWidget *widget);
+    virtual void remove(int index);
+
+    // Semismart positioning of a new MDI child after cascading
+    static void positionNewMdiChild(const QWidget *area, QWidget *mdiChild);
+
+private:
+    QMdiArea *m_mdiArea;
+};
+
+// PropertySheet for QMdiArea: Fakes window title and name.
+// Also works for a QWorkspace as it relies on the container extension.
+
+class QMdiAreaPropertySheet: public QDesignerPropertySheet
+{
+    Q_OBJECT
+    Q_INTERFACES(QDesignerPropertySheetExtension)
+public:
+    explicit QMdiAreaPropertySheet(QWidget *mdiArea, QObject *parent = 0);
+
+    virtual void setProperty(int index, const QVariant &value);
+    virtual bool reset(int index);
+    virtual bool isEnabled(int index) const;
+    virtual bool isChanged(int index) const;
+    virtual QVariant property(int index) const;
+
+    // Check whether the property is to be saved. Returns false for the page
+    // properties (as the property sheet has no concept of 'stored')
+    static bool checkProperty(const QString &propertyName);
+
+private:
+    const QString m_windowTitleProperty;
+    QWidget *currentWindow() const;
+    QDesignerPropertySheetExtension *currentWindowSheet() const;
+
+    enum MdiAreaProperty { MdiAreaSubWindowName, MdiAreaSubWindowTitle, MdiAreaNone };
+    static MdiAreaProperty mdiAreaProperty(const QString &name);
+};
+
+// Factories
+
+typedef ExtensionFactory<QDesignerContainerExtension,  QMdiArea,  QMdiAreaContainer> QMdiAreaContainerFactory;
+typedef QDesignerPropertySheetFactory<QMdiArea, QMdiAreaPropertySheet> QMdiAreaPropertySheetFactory;
+typedef QDesignerPropertySheetFactory<QWorkspace, QMdiAreaPropertySheet> QWorkspacePropertySheetFactory;
+}  // namespace qdesigner_internal
+
+QT_END_NAMESPACE
+
+#endif // QMDIAREA_CONTAINER_H