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diff --git a/sd/source/ui/inc/ShellFactory.hxx b/sd/source/ui/inc/ShellFactory.hxx
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef SD_VIEW_SHELL_FACTORY_HXX
+#define SD_VIEW_SHELL_FACTORY_HXX
+
+#include <sal/types.h>
+#include <memory>
+
+class Window;
+
+namespace sd {
+
+class FrameView;
+class ViewShell;
+
+typedef sal_Int32 ShellId;
+// This shell id is a reserved value and does not specify any valid shell.
+static const sal_Int32 snInvalidShellId = -1;
+
+template<class ShellType>
+class ShellFactory
+{
+public:
+    /** This abstract virtual class needs a destructor so that the
+        destructors of derived classes are called.
+    */
+    virtual ~ShellFactory (void) {};
+
+    /** 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,
+        ::Window* pParentWindow,
+        FrameView* pFrameView = NULL) = 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