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diff --git a/sd/source/ui/inc/ShellFactory.hxx b/sd/source/ui/inc/ShellFactory.hxx
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+++ b/sd/source/ui/inc/ShellFactory.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_SD_SOURCE_UI_INC_SHELLFACTORY_HXX
+#define INCLUDED_SD_SOURCE_UI_INC_SHELLFACTORY_HXX
+
+#include <sfx2/toolbarids.hxx>
+
+namespace sd {
+
+typedef ToolbarId ShellId;
+
+template<class ShellType>
+class ShellFactory
+{
+public:
+    /** This abstract virtual class needs a destructor so that the
+        destructors of derived classes are called.
+    */
+    virtual ~ShellFactory() {};
+
+    /** Create a new instance of a view shell for the given id that will
+        be stacked onto the given view shell base.
+        @return
+            Return the new view shell or NULL when a creation is not
+            possible.
+        */
+    virtual ShellType* CreateShell(ShellId nId) = 0;
+
+    /** Tell the factory that a shell is no longer in use.  It may destroy
+        it or put it for future use in a cache.
+    */
+    virtual void ReleaseShell (ShellType* pShell) = 0;
+};
+
+} // end of namespace sd
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */