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diff --git a/src/mdecoratorframe.h b/src/mdecoratorframe.h
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+/***************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (directui@nokia.com)
+**
+** This file is part of mcompositor.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at directui@nokia.com.
+**
+** This library is free software; you can redistribute it and/or
+** modify it 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.
+**
+****************************************************************************/
+
+#ifndef DUIDECORATORFRAME_H
+#define DUIDECORATORFRAME_H
+
+#include <QObject>
+
+class MCompositeWindow;
+class MRmiClient;
+
+/*!
+ * MDecoratorFrame is a singleton class that represents the decorator process
+ * which draws the decorations for non-DirectUI applications.
+ * This class handles the communication as well to the decorator.
+ */
+class MDecoratorFrame: public QObject
+{
+    Q_OBJECT
+public:
+
+    /*!
+     * Singleton accessor
+     */
+    static MDecoratorFrame *instance();
+
+    /*!
+     * Retuns the window id of the managed window.
+     */
+    Qt::HANDLE managedWindow() const;
+
+    /*!
+     * Returns the window id of the decorator window.
+     */
+    Qt::HANDLE winId() const;
+
+    /*!
+     * Activates the window
+     */
+    void activate();
+
+    /*!
+     * Lowers the decorator window.
+     */
+    void lower();
+
+    /*!
+     * Raises the decorator window.
+     */
+    void raise();
+
+    /*!
+     * Sets the managed window.
+     */
+    void setManagedWindow(Qt::HANDLE window);
+
+    /*!
+     * Sets the decorator window and maps that window if it is unmapped.
+     */
+    void setDecoratorWindow(Qt::HANDLE window);
+
+    void setDecoratorItem(MCompositeWindow *window);
+
+    MCompositeWindow *decoratorItem() const;
+
+private slots:
+    void destroyDecorator();
+    void destroyClient();
+    void visualizeDecorator(bool visible);
+
+private:
+    explicit MDecoratorFrame(QObject *object = 0);
+    static MDecoratorFrame *d;
+
+    Qt::HANDLE client;
+    Qt::HANDLE decorator_window;
+    MCompositeWindow *decorator_item;
+    MRmiClient *remote_decorator;
+};
+
+#endif // DUIDECORATORFRAME_H