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diff --git a/offapi/com/sun/star/awt/tree/XTreeDataModel.idl b/offapi/com/sun/star/awt/tree/XTreeDataModel.idl
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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 __com_sun_star_awt_tree_XTreeDataModel_idl__
+#define __com_sun_star_awt_tree_XTreeDataModel_idl__
+
+#ifndef __com_sun_star_awt_tree_XTreeDataModelListener_idl__
+#include <com/sun/star/awt/tree/XTreeDataModelListener.idl>
+#endif
+
+#ifndef __com_sun_star_lang_IllegalArgumentException_idl__
+#include <com/sun/star/lang/IllegalArgumentException.idl>
+#endif
+
+#ifndef __com_sun_star_lang_XComponent_idl__
+#include <com/sun/star/lang/XComponent.idl>
+#endif
+
+#ifndef __com_sun_star_awt_tree_XTreeNode_idl__
+#include <com/sun/star/awt/tree/XTreeNode.idl>
+#endif
+
+//=============================================================================
+
+module com {  module sun {  module star {  module awt {  module tree {
+
+//=============================================================================
+
+/** An instance of this interface is used by the <type>TreeControl</type> to
+    retrieve the hierarchical outline data that is displayed in the actual control.
+
+    <p>If you implement your own <type>XTreeDataModel</type> you need to notify registered
+    <type>XTreeDataModelListener</type> if your model changes after the control is created.
+    If this is not done correctly the <type>TreeControl</type> will not update the data properly.</p>
+
+    If you do not need your own model implementation, you can also use the <type>MutableTreeDataModel</type>.
+*/
+interface XTreeDataModel : ::com::sun::star::lang::XComponent
+{
+    /** Returns the root of the tree.
+        <p>Returns null only if the tree has no nodes.
+
+        @returns
+            the root of the tree
+    */
+    XTreeNode getRoot();
+
+    /** Adds a listener for the <type>TreeDataModelEvent</type> posted after the tree changes.
+
+        @param Listener
+            the listener to add.
+    */
+    void addTreeDataModelListener( [in] XTreeDataModelListener Listener );
+
+
+    /** Removes a listener previously added with <method>addTreeDataModelListener()</method>.
+
+        @param Listener
+            the listener to remove.
+    */
+    void removeTreeDataModelListener( [in] XTreeDataModelListener Listener );
+
+};
+
+//=============================================================================
+
+}; }; }; }; };
+
+#endif