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diff --git a/sd/source/ui/slidesorter/controller/SlsDragAndDropContext.hxx b/sd/source/ui/slidesorter/controller/SlsDragAndDropContext.hxx
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+++ b/sd/source/ui/slidesorter/controller/SlsDragAndDropContext.hxx
@@ -0,0 +1,100 @@
+/*************************************************************************
+ *
+ * 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_SLIDESORTER_SUBSTITUTION_HANDLER_HXX
+#define SD_SLIDESORTER_SUBSTITUTION_HANDLER_HXX
+
+#include <tools/gen.hxx>
+
+#include "model/SlsSharedPageDescriptor.hxx"
+#include "controller/SlsInsertionIndicatorHandler.hxx"
+#include <vector>
+
+
+namespace sd { namespace slidesorter {
+class SlideSorter;
+} }
+
+
+
+namespace sd { namespace slidesorter { namespace controller {
+
+/** A DragAndDropContext object handles an active drag and drop operation.
+    When the mouse is moved from one slide sorter window to another the
+    target SlideSorter object is exchanged accordingly.
+*/
+class DragAndDropContext
+{
+public:
+    /** Create a substitution display of the currently selected pages or,
+        when provided, the pages in the transferable.
+    */
+    DragAndDropContext (SlideSorter& rSlideSorter);
+    ~DragAndDropContext (void);
+
+    /** Call this method (for example as reaction to ESC key press) to avoid
+        processing (ie moving or inserting) the substition when the called
+        DragAndDropContext object is destroyed.
+    */
+    void Dispose (void);
+
+    /** Move the substitution display by the distance the mouse has
+        travelled since the last call to this method or to
+        CreateSubstitution().  The given point becomes the new anchor.
+    */
+    void UpdatePosition (
+        const Point& rMousePosition,
+        const InsertionIndicatorHandler::Mode eMode,
+        const bool bAllowAutoScroll = true);
+
+    void SetTargetSlideSorter (
+        SlideSorter* pSlideSorter = NULL,
+        const Point aMousePosition = Point(0,0),
+        const InsertionIndicatorHandler::Mode eMode = InsertionIndicatorHandler::UnknownMode,
+        const bool bIsOverSourceView = false);
+
+private:
+    SlideSorter* mpTargetSlideSorter;
+    model::SharedPageDescriptor mpHitDescriptor;
+    sal_Int32 mnInsertionIndex;
+
+    void GetPagesFromBookmarks (
+        ::std::vector<const SdPage*>& rPages,
+        sal_Int32& rnSelectionCount,
+        DrawDocShell* pDocShell,
+        const List& rBookmarks) const;
+    void GetPagesFromSelection (
+        ::std::vector<const SdPage*>& rPages,
+        sal_Int32& rnSelectionCount,
+        model::PageEnumeration& rSelection) const;
+};
+
+
+
+} } } // end of namespace ::sd::slidesorter::controller
+
+#endif