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diff --git a/src/compositor/extensions/qwlsubsurface_p.h b/src/compositor/extensions/qwlsubsurface_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtWaylandCompositor module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later 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 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef WLSUBSURFACE_H
+#define WLSUBSURFACE_H
+
+#include <private/qwlsurface_p.h>
+
+#include <QtCompositor/private/qwayland-server-sub-surface-extension.h>
+
+#include <QtCore/QLinkedList>
+
+QT_BEGIN_NAMESPACE
+
+class Compositor;
+class QWaylandSurface;
+
+namespace QtWayland {
+
+class SubSurfaceExtensionGlobal : public QWaylandExtension, public QtWaylandServer::qt_sub_surface_extension
+{
+    Q_OBJECT
+public:
+    SubSurfaceExtensionGlobal(QWaylandCompositor *compositor);
+
+    const struct wl_interface *interface() const { return qt_sub_surface_extension::interface(); }
+private:
+    QWaylandCompositor *m_compositor;
+
+    void sub_surface_extension_get_sub_surface_aware_surface(Resource *resource, uint32_t id, struct ::wl_resource *surface) Q_DECL_OVERRIDE;
+};
+
+class SubSurface : public QWaylandExtension, public QtWaylandServer::qt_sub_surface
+{
+    Q_OBJECT
+    Q_PROPERTY(SubSurface *parent READ parent WRITE setParent NOTIFY parentChanged)
+public:
+    SubSurface(struct wl_client *client, uint32_t id, QWaylandSurface *surface);
+    ~SubSurface();
+
+    void setSubSurface(SubSurface *subSurface, int x, int y);
+    void removeSubSurface(SubSurface *subSurfaces);
+
+    SubSurface *parent() const;
+    void setParent(SubSurface *parent);
+
+    QLinkedList<QWaylandSurface *> subSurfaces() const;
+
+    QWaylandSurface *surface() const;
+
+    const struct wl_interface *interface() const { return qt_sub_surface::interface(); }
+
+signals:
+    void parentChanged(SubSurface *newParent, SubSurface *oldParent);
+
+protected:
+    void sub_surface_attach_sub_surface(Resource *resource, struct ::wl_resource *sub_surface, int32_t x, int32_t y) Q_DECL_OVERRIDE;
+    void sub_surface_move_sub_surface(Resource *resource, struct ::wl_resource *sub_surface, int32_t x, int32_t y) Q_DECL_OVERRIDE;
+    void sub_surface_raise(Resource *resource, struct ::wl_resource *sub_surface) Q_DECL_OVERRIDE;
+    void sub_surface_lower(Resource *resource, struct ::wl_resource *sub_surface) Q_DECL_OVERRIDE;
+
+private:
+    void parentDestroyed();
+    struct wl_resource *m_sub_surface_resource;
+    QWaylandSurface *m_surface;
+
+    SubSurface *m_parent;
+    QLinkedList<QWaylandSurface *> m_sub_surfaces;
+
+};
+
+inline QWaylandSurface *SubSurface::surface() const
+{
+    return m_surface;
+}
+
+}
+
+QT_END_NAMESPACE
+
+#endif // WLSUBSURFACE_H