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diff --git a/comphelper/inc/comphelper/SelectionMultiplex.hxx b/comphelper/inc/comphelper/SelectionMultiplex.hxx
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+++ b/comphelper/inc/comphelper/SelectionMultiplex.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 INCLUDED_COMPHELPER_SELECTION_MULTIPLEX_HXX
+#define INCLUDED_COMPHELPER_SELECTION_MULTIPLEX_HXX
+
+#include <com/sun/star/view/XSelectionChangeListener.hpp>
+#include <com/sun/star/view/XSelectionSupplier.hpp>
+#include <cppuhelper/implbase1.hxx>
+#include "comphelper/comphelperdllapi.h"
+
+//=========================================================================
+//= selection helper classes
+//=========================================================================
+
+//.........................................................................
+namespace comphelper
+{
+//.........................................................................
+
+    class OSelectionChangeMultiplexer;
+
+    //==================================================================
+    //= OSelectionChangeListener
+    //==================================================================
+    /// simple listener adapter for selections
+    class COMPHELPER_DLLPUBLIC OSelectionChangeListener
+    {
+        friend class OSelectionChangeMultiplexer;
+
+        OSelectionChangeMultiplexer*    m_pAdapter;
+        ::osl::Mutex&                   m_rMutex;
+
+    public:
+        OSelectionChangeListener(::osl::Mutex& _rMutex)
+            : m_pAdapter(NULL), m_rMutex(_rMutex) { }
+        virtual ~OSelectionChangeListener();
+
+        virtual void _selectionChanged( const ::com::sun::star::lang::EventObject& aEvent ) throw (::com::sun::star::uno::RuntimeException) = 0;
+        virtual void _disposing(const ::com::sun::star::lang::EventObject& _rSource) throw( ::com::sun::star::uno::RuntimeException);
+
+    protected:
+        /** If the derivee also owns the mutex which we know as reference, then call this within your
+            derivee's dtor.
+        */
+        void    disposeAdapter();
+
+        // pseudo-private. Making it private now could break compatibility
+        void    setAdapter( OSelectionChangeMultiplexer* _pAdapter );
+    };
+
+    //==================================================================
+    //= OSelectionChangeMultiplexer
+    //==================================================================
+    /// multiplexer for selection changes
+    class COMPHELPER_DLLPUBLIC OSelectionChangeMultiplexer  :public cppu::WeakImplHelper1< ::com::sun::star::view::XSelectionChangeListener>
+    {
+        friend class OSelectionChangeListener;
+         ::com::sun::star::uno::Reference< ::com::sun::star::view::XSelectionSupplier>  m_xSet;
+        OSelectionChangeListener*                   m_pListener;
+        sal_Int32                                   m_nLockCount;
+        sal_Bool                                    m_bListening        : 1;
+        sal_Bool                                    m_bAutoSetRelease   : 1;
+
+        OSelectionChangeMultiplexer(const OSelectionChangeMultiplexer&);
+        OSelectionChangeMultiplexer& operator=(const OSelectionChangeMultiplexer&);
+    protected:
+        virtual ~OSelectionChangeMultiplexer();
+    public:
+        OSelectionChangeMultiplexer(OSelectionChangeListener* _pListener, const  ::com::sun::star::uno::Reference< ::com::sun::star::view::XSelectionSupplier>& _rxSet, sal_Bool _bAutoReleaseSet = sal_True);
+
+    // XEventListener
+        virtual void SAL_CALL disposing( const  ::com::sun::star::lang::EventObject& Source ) throw( ::com::sun::star::uno::RuntimeException);
+
+    // XSelectionChangeListener
+        virtual void SAL_CALL selectionChanged( const ::com::sun::star::lang::EventObject& aEvent ) throw (::com::sun::star::uno::RuntimeException);
+
+        /// incremental lock
+        void        lock();
+        /// incremental unlock
+        void        unlock();
+        /// get the lock count
+        sal_Int32   locked() const { return m_nLockCount; }
+
+        void dispose();
+    };
+
+//.........................................................................
+}   // namespace comphelper
+//.........................................................................
+
+#endif // INCLUDED_COMPHELPER_SELECTION_MULTIPLEX_HXX
+