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diff --git a/include/svx/sdr/properties/properties.hxx b/include/svx/sdr/properties/properties.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_SDR_PROPERTIES_PROPERTIES_HXX
+#define INCLUDED_SVX_SDR_PROPERTIES_PROPERTIES_HXX
+
+#include <sal/config.h>
+
+#include <memory>
+
+#include <sal/types.h>
+#include <svx/svxdllapi.h>
+#include <svl/typedwhich.hxx>
+
+struct _xmlTextWriter;
+typedef struct _xmlTextWriter* xmlTextWriterPtr;
+class SdrObject;
+class SfxItemSet;
+class SfxPoolItem;
+class SfxStyleSheet;
+class Fraction;
+class SfxItemPool;
+class SdrModel;
+
+namespace sdr
+{
+    namespace properties
+    {
+        class ItemChangeBroadcaster;
+    }
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+//
+//  BaseProperties
+//      DefaultProperties                   ->SfxItemSet
+//          AttributeProperties             ->SfxStyleSheet
+//              E3dProperties
+//                  E3dCompoundProperties
+//                      E3dExtrudeProperties
+//                      E3dLatheProperties
+//                      E3dSphereProperties
+//                  E3dSceneProperties
+//              TextProperties              ->maVersion
+//                  ConnectorProperties
+//                  CustomShapeProperties
+//                  MeasureProperties
+//                  RectangleProperties
+//                      CaptionProperties
+//                      CircleProperties
+//                      GraphicProperties
+//                      OleProperties
+//                  CellProperties
+//                  TableProperties
+//          GroupProperties
+//      EmptyProperties
+//          PageProperties
+
+namespace sdr
+{
+    namespace properties
+    {
+        class SVXCORE_DLLPUBLIC BaseProperties
+        {
+        private:
+            // the owner of this Properties. Set from constructor and not
+            // to be changed in any way.
+            SdrObject&                                      mrObject;
+
+        protected:
+            // apply the correct SfyStyleSheet from SdrObject's SdrModel
+            virtual void applyDefaultStyleSheetFromSdrModel();
+
+            // create a new object specific itemset with object specific ranges.
+            virtual std::unique_ptr<SfxItemSet> CreateObjectSpecificItemSet(SfxItemPool& pPool) = 0;
+
+            // internal access to SdrObject
+            const SdrObject& GetSdrObject() const;
+
+            SdrObject& GetSdrObject();
+
+            // Test changeability for a single item. If an implementation wants to prevent
+            // changing an item it should override this method.
+            virtual bool AllowItemChange(const sal_uInt16 nWhich, const SfxPoolItem* pNewItem = nullptr) const = 0;
+
+            // Do the internal ItemChange. If only nWhich is given, the item needs to be cleared.
+            // Also needs to handle if nWhich and pNewItem is 0, which means to clear all items.
+            virtual void ItemChange(const sal_uInt16 nWhich, const SfxPoolItem* pNewItem = nullptr) = 0;
+
+            // Called after ItemChange() is done for all items. Allows local reactions on
+            // specific item changes
+            virtual void PostItemChange(const sal_uInt16 nWhich) = 0;
+
+            // Internally react on ItemSet changes. The given ItemSet contains all changed items, the new ones.
+            virtual void ItemSetChanged(const SfxItemSet& rSet) = 0;
+
+        public:
+            // basic constructor, used from SdrObject.
+            explicit BaseProperties(SdrObject& rObj);
+
+            // destructor
+            virtual ~BaseProperties();
+
+            // Clone() operator, normally just calls the local copy constructor,
+            // see above.
+            virtual std::unique_ptr<BaseProperties> Clone(SdrObject& rObj) const = 0;
+
+            // Get the local ItemSet. This directly returns the local ItemSet of the object. No
+            // merging of ItemSets is done for e.g. Group objects.
+            virtual const SfxItemSet& GetObjectItemSet() const = 0;
+
+            // get merged ItemSet. Normally, this maps directly to GetObjectItemSet(), but may
+            // be overridden 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
+            // SfxItemState::DONTCARE which means there were several such items with different
+            // values.
+            virtual const SfxItemSet& GetMergedItemSet() const;
+
+            // Sets all items which are on state SfxItemState::SET in rSet at the local ItemSet.
+            // Uses AllowItemChange(), ItemChange(), PostItemChange() and ItemSetChanged() calls.
+            virtual void SetObjectItemSet(const SfxItemSet& rSet) = 0;
+
+            // Set merged ItemSet. Normally, this maps to SetObjectItemSet().
+            virtual void SetMergedItemSet(const SfxItemSet& rSet, bool bClearAllItems = false);
+
+            // Set single item at the local ItemSet. Uses AllowItemChange(),
+            // ItemChange(), PostItemChange() and ItemSetChanged() calls.
+            virtual void SetObjectItem(const SfxPoolItem& rItem) = 0;
+
+            // Set a single item direct. Only uses AllowItemChange() and ItemChange(),
+            // but not PostItemChange() and ItemSetChanged() calls.
+            virtual void SetObjectItemDirect(const SfxPoolItem& rItem) = 0;
+
+            // Clear a single local item. Uses AllowItemChange(),
+            // ItemChange(), PostItemChange() and ItemSetChanged() calls.
+            virtual void ClearObjectItem(const sal_uInt16 nWhich = 0) = 0;
+
+            // Set a single item, iterate over hierarchies if necessary. Default
+            // Implementation falls back to ClearObjectItem().
+            virtual void SetMergedItem(const SfxPoolItem& rItem);
+
+            // Clear a single item, iterate over hierarchies if necessary. Default
+            // Implementation falls back to ClearObjectItem().
+            virtual void ClearMergedItem(const sal_uInt16 nWhich);
+
+            // Clear single item direct. Only uses AllowItemChange() and ItemChange(),
+            // but not PostItemChange() and ItemSetChanged() calls.
+            // Also supports complete deletion of items when default parameter 0 is used.
+            virtual void ClearObjectItemDirect(const sal_uInt16 nWhich) = 0;
+
+            // Set a new StyleSheet. Registers as listener at the StyleSheet to get knowledge
+            // of StyleSheet changes.
+            virtual void SetStyleSheet(SfxStyleSheet* pNewStyleSheet, bool bDontRemoveHardAttr) = 0;
+
+            // Get the installed StyleSheet.
+            virtual SfxStyleSheet* GetStyleSheet() const = 0;
+
+            // force all attributes which come from styles to hard attributes
+            // to be able to live without the style.
+            virtual void ForceStyleToHardAttributes();
+
+            // syntactical sugar for ItemSet accesses. Broadcasts before and after the changes
+            // to invalidate views in old and new BoundRects. As soon as the repaint mechanism
+            // will be changed these broadcasts will no longer be needed.
+            //void SetItemAndBroadcast(const SfxPoolItem& rItem);
+            //void ClearItemAndBroadcast(const sal_uInt16 nWhich = 0);
+            void SetMergedItemSetAndBroadcast(const SfxItemSet& rSet, bool bClearAllItems = false);
+
+            // Just a convenient shortcut for GetObjectItemSet().Get(nWhich).
+            const SfxPoolItem& GetItem(const sal_uInt16 nWhich) const;
+            template<class T> const T& GetItem(TypedWhichId<T> nWhich) const
+            {
+                return static_cast<const T&>(GetItem(sal_uInt16(nWhich)));
+            }
+
+            // support for convenient broadcasting. Used from SetMergedItemAndBroadcast(),
+            // ClearItemAndBroadcast() and SetItemSetAndBroadcast(), see above.
+            // But also from inside SdrObjects.
+            void BroadcastItemChange(const ItemChangeBroadcaster& rChange);
+
+            // #i101556# add versioning mechanism; used from e.g. text attribute set to
+            // allow detection of e.g. style sheet or single text attribute changes. The
+            // default implementation returns 0 (zero)
+            virtual sal_uInt32 getVersion() const;
+
+            virtual void dumpAsXml(xmlTextWriterPtr pWriter) const;
+        };
+
+        // checks the FillStyle item and removes unneeded Gradient, FillBitmap and Hatch items
+        void SVXCORE_DLLPUBLIC CleanupFillProperties( SfxItemSet& rItemSet );
+
+    } // end of namespace properties
+} // end of namespace sdr
+
+#endif // INCLUDED_SVX_SDR_PROPERTIES_PROPERTIES_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */