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diff --git a/include/svx/IAccessibleViewForwarderListener.hxx b/include/svx/IAccessibleViewForwarderListener.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_SVX_IACCESSIBLEVIEWFORWARDERLISTENER_HXX
+#define INCLUDED_SVX_IACCESSIBLEVIEWFORWARDERLISTENER_HXX
+
+namespace accessibility
+{
+/** <p>The purpose of this interface is to notify a user of an
+    IAccessibleViewForwarder when that view forwarder changes its
+    properties.  Such a change may be one of the following:
+    <ul>
+    <li>Change of the coordinate transformation.</li>
+    <li>Change of the visible area (which in turn results in a change of the
+    coordinate transformation.</li>
+    <li>Change of the validity state of the view forwarder.</li>
+*/
+class IAccessibleViewForwarderListener
+{
+public:
+    /** This method is called to indicate a change of the specified view
+        forwarder, specifically, a change in visible area.
+    */
+    virtual void ViewForwarderChanged() = 0;
+
+protected:
+    ~IAccessibleViewForwarderListener() {}
+};
+
+} // end of namespace accessibility
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */