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diff --git a/sd/source/ui/slidesorter/controller/SlsHideSlideFunction.hxx b/sd/source/ui/slidesorter/controller/SlsHideSlideFunction.hxx
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+++ b/sd/source/ui/slidesorter/controller/SlsHideSlideFunction.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * 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_HIDE_SLIDE_FUNCTION_HXX
+#define SD_SLIDESORTER_HIDE_SLIDE_FUNCTION_HXX
+
+#include "controller/SlsSlideFunction.hxx"
+#include "model/SlsPageEnumeration.hxx"
+
+
+namespace sd { namespace slidesorter { namespace controller {
+
+/** Toggle the hidden flag of the selected slides.
+    When the selected pages have not all the same state they will all set to
+    hidden.  When all selected pages have the same state this state is
+    toggled for all of them
+*/
+class HideSlideFunction
+    : public SlideFunction
+{
+public:
+    TYPEINFO();
+
+    virtual ~HideSlideFunction (void);
+
+    static FunctionReference Create( SlideSorter& rSlideSorter, SfxRequest& rRequest );
+    virtual void DoExecute( SfxRequest& rReq );
+
+    // The state of a set of slides with respect to being excluded from the
+    // slide show.
+    enum ExclusionState {UNDEFINED, EXCLUDED, INCLUDED, MIXED};
+
+    /** Return for the given set of slides whether they included are
+        excluded from the slide show.
+    */
+    static ExclusionState GetExclusionState (model::PageEnumeration& rPageSet);
+
+protected:
+    HideSlideFunction (
+        SlideSorter& rSlideSorter,
+        SfxRequest& rRequest);
+
+    SlideSorter& mrSlideSorter;
+};
+
+} } } // end of namespace ::sd::slidesorter::controller
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */