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diff --git a/include/svx/sdr/properties/groupproperties.hxx b/include/svx/sdr/properties/groupproperties.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 _SDR_PROPERTIES_GROUPPROPERTIES_HXX
+#define _SDR_PROPERTIES_GROUPPROPERTIES_HXX
+
+#include <svx/sdr/properties/defaultproperties.hxx>
+
+/////////////////////////////////////////////////////////////////////////////
+
+namespace sdr
+{
+    namespace properties
+    {
+        class GroupProperties : public DefaultProperties
+        {
+        protected:
+            // create a new itemset
+            virtual SfxItemSet& CreateObjectSpecificItemSet(SfxItemPool& rPool);
+
+            // test changeability for a single item
+            virtual sal_Bool AllowItemChange(const sal_uInt16 nWhich, const SfxPoolItem* pNewItem = 0) const;
+
+            // Do the ItemChange, may do special handling
+            virtual void ItemChange(const sal_uInt16 nWhich, const SfxPoolItem* pNewItem = 0);
+
+            // Called after ItemChange() is done for all items.
+            virtual void PostItemChange(const sal_uInt16 nWhich);
+
+            // react on ItemSet changes
+            virtual void ItemSetChanged(const SfxItemSet& rSet);
+
+        public:
+            // basic constructor
+            explicit GroupProperties(SdrObject& rObj);
+
+            // copy constructor
+            GroupProperties(const GroupProperties& rProps, SdrObject& rObj);
+
+            // destructor
+            virtual ~GroupProperties();
+
+            // Clone() operator, normally just calls the local copy constructor
+            virtual BaseProperties& Clone(SdrObject& rObj) const;
+
+            // get itemset
+            virtual const SfxItemSet& GetObjectItemSet() const;
+
+            // get merged ItemSet. Normally, this maps directly to GetObjectItemSet(), but may
+            // be overloaded e.g for group objects to return a merged ItemSet of the object.
+            // When using this method the returned ItemSet may contain items in the state
+            // SFX_ITEM_DONTCARE which means there were several such items with different
+            // values.
+            virtual const SfxItemSet& GetMergedItemSet() const;
+
+            // Set merged ItemSet. Normally, this maps to SetObjectItemSet().
+            virtual void SetMergedItemSet(const SfxItemSet& rSet, sal_Bool bClearAllItems = sal_False);
+
+            // set single item
+            virtual void SetObjectItem(const SfxPoolItem& rItem);
+
+            // set single item direct, do not do any notifies or things like that
+            virtual void SetObjectItemDirect(const SfxPoolItem& rItem);
+
+            // clear single item
+            virtual void ClearObjectItem(const sal_uInt16 nWhich = 0);
+
+            // clear single item direct, do not do any notifies or things like that.
+            // Also supports complete deleteion of items when default parameter 0 is used.
+            virtual void ClearObjectItemDirect(const sal_uInt16 nWhich = 0);
+
+            // Set a single item, iterate over hierarchies if necessary.
+            virtual void SetMergedItem(const SfxPoolItem& rItem);
+
+            // Clear a single item, iterate over hierarchies if necessary.
+            virtual void ClearMergedItem(const sal_uInt16 nWhich = 0);
+
+            // set complete item set
+            virtual void SetObjectItemSet(const SfxItemSet& rSet);
+
+            // set a new StyleSheet
+            virtual void SetStyleSheet(SfxStyleSheet* pNewStyleSheet, sal_Bool bDontRemoveHardAttr);
+
+            // get the local StyleSheet
+            virtual SfxStyleSheet* GetStyleSheet() const;
+
+            // force default attributes for a specific object type, called from
+            // DefaultProperties::GetObjectItemSet() if a new ItemSet is created
+            virtual void ForceDefaultAttributes();
+
+            // Move properties to a new ItemPool.
+            virtual void MoveToItemPool(SfxItemPool* pSrcPool, SfxItemPool* pDestPool, SdrModel* pNewModel = 0L);
+
+            // force all attributes which come from styles to hard attributes
+            // to be able to live without the style.
+            virtual void ForceStyleToHardAttributes();
+        };
+    } // end of namespace properties
+} // end of namespace sdr
+
+//////////////////////////////////////////////////////////////////////////////
+
+#endif //_SDR_PROPERTIES_GROUPPROPERTIES_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */