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diff --git a/sd/source/ui/slidesorter/inc/controller/SlsCurrentSlideManager.hxx b/sd/source/ui/slidesorter/inc/controller/SlsCurrentSlideManager.hxx
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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 SD_SLIDESORTER_CURRENT_SLIDE_MANAGER_HXX
+#define SD_SLIDESORTER_CURRENT_SLIDE_MANAGER_HXX
+
+#include "model/SlsSharedPageDescriptor.hxx"
+#include <vcl/timer.hxx>
+#include <tools/link.hxx>
+#include <com/sun/star/drawing/XDrawPage.hpp>
+
+class SdPage;
+
+namespace sd { namespace slidesorter {
+class SlideSorter;
+} }
+
+
+namespace sd { namespace slidesorter { namespace controller {
+
+/** Manage the current slide.  This includes setting the according flags at
+    the PageDescriptor objects and setting the current slide at the main
+    view shell.
+
+    Switching pages is triggered only after a little delay.  This allows
+    fast travelling through a larger set of slides without having to wait
+    for the edit view to update its content after every slide change.
+*/
+class CurrentSlideManager
+{
+public:
+    /** Create a new CurrentSlideManager object that manages the current
+        slide for the given SlideSorter.
+    */
+    CurrentSlideManager (SlideSorter& rSlideSorter);
+
+    ~CurrentSlideManager (void);
+
+    /** Call this when the current page of the main view shell has been
+        switched.  Use SwitchCurrentSlide() to initiate such a switch.
+    */
+    void NotifyCurrentSlideChange (const sal_Int32 nSlideIndex);
+    void NotifyCurrentSlideChange (const SdPage* pPage);
+
+    /** Call this method to switch the current page of the main view shell
+        to the given slide.  Use CurrentSlideHasChanged() when the current
+        slide change has been initiated by someone else.
+        @param nSlideIndex
+            Zero based index in the range [0,number-of-slides).
+        @param bUpdateSelection
+            When <TRUE/> then the page selection is cleared and only the new
+            current slide is selected.
+    */
+    void SwitchCurrentSlide (
+        const sal_Int32 nSlideIndex,
+        const bool bUpdateSelection = false);
+    void SwitchCurrentSlide (
+        const model::SharedPageDescriptor& rpSlide,
+        const bool bUpdateSelection = false);
+
+    /** Return the page descriptor for the current slide.  Note, that when
+        there is no current slide then the returned pointer is empty.
+    */
+    model::SharedPageDescriptor GetCurrentSlide (void);
+
+    /** Release all references to model data.
+    */
+    void PrepareModelChange (void);
+
+    /** Modify inner state in reaction to a change of the SlideSorterModel.
+    */
+    void HandleModelChange (void);
+
+private:
+    SlideSorter& mrSlideSorter;
+    sal_Int32 mnCurrentSlideIndex;
+    model::SharedPageDescriptor mpCurrentSlide;
+    /** Timer to control the delay after which to ask
+        XController/ViewShellBase to switch to another slide.
+    */
+    Timer maSwitchPageDelayTimer;
+
+    bool IsCurrentSlideIsValid (void);
+    void SetCurrentSlideAtViewShellBase (const model::SharedPageDescriptor& rpSlide);
+    void SetCurrentSlideAtTabControl (const model::SharedPageDescriptor& rpSlide);
+    void SetCurrentSlideAtXController (const model::SharedPageDescriptor& rpSlide);
+
+    /** When switching from one slide to a new current slide then this
+        method releases all ties to the old slide.
+    */
+    void ReleaseCurrentSlide (void);
+
+    /** When switching from one slide to a new current slide then this
+        method connects to the new current slide.
+    */
+    void AcquireCurrentSlide (const sal_Int32 nSlideIndex);
+
+    DECL_LINK(SwitchPageCallback,void*);
+};
+
+
+} } } // end of namespace ::sd::slidesorter::controller
+
+#endif