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diff --git a/src/designer/src/components/formeditor/formwindow_widgetstack.h b/src/designer/src/components/formeditor/formwindow_widgetstack.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 FORMWINDOW_WIDGETSTACK_H
+#define FORMWINDOW_WIDGETSTACK_H
+
+#include "formeditor_global.h"
+
+#include <QtGui/QWidget>
+
+QT_BEGIN_NAMESPACE
+
+class QDesignerFormWindowToolInterface;
+
+class QStackedLayout;
+class QWidget;
+
+namespace qdesigner_internal {
+
+class QT_FORMEDITOR_EXPORT FormWindowWidgetStack: public QObject
+{
+    Q_OBJECT
+public:
+    FormWindowWidgetStack(QObject *parent = 0);
+    virtual ~FormWindowWidgetStack();
+
+    QLayout *layout() const;
+
+    int count() const;
+    QDesignerFormWindowToolInterface *tool(int index) const;
+    QDesignerFormWindowToolInterface *currentTool() const;
+    int currentIndex() const;
+    int indexOf(QDesignerFormWindowToolInterface *tool) const;
+
+    void setMainContainer(QWidget *w = 0);
+
+    // Return the widget containing the form which can be used to apply embedded design settings to.
+    // These settings should not affect the other editing tools.
+    QWidget *formContainer() const { return m_formContainer; }
+
+signals:
+    void currentToolChanged(int index);
+
+public slots:
+    void addTool(QDesignerFormWindowToolInterface *tool);
+    void setCurrentTool(QDesignerFormWindowToolInterface *tool);
+    void setCurrentTool(int index);
+    void setSenderAsCurrentTool();
+
+protected:
+    QWidget *defaultEditor() const;
+
+private:
+    QList<QDesignerFormWindowToolInterface*> m_tools;
+    QWidget *m_formContainer;
+    QStackedLayout *m_formContainerLayout;
+    QStackedLayout *m_layout;
+};
+
+}  // namespace qdesigner_internal
+
+QT_END_NAMESPACE
+
+#endif // FORMWINDOW_WIDGETSTACK_H