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diff --git a/slideshow/source/inc/unoviewcontainer.hxx b/slideshow/source/inc/unoviewcontainer.hxx
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+++ b/slideshow/source/inc/unoviewcontainer.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_SLIDESHOW_SOURCE_INC_UNOVIEWCONTAINER_HXX
+#define INCLUDED_SLIDESHOW_SOURCE_INC_UNOVIEWCONTAINER_HXX
+
+#include <com/sun/star/uno/Reference.hxx>
+
+#include "unoview.hxx"
+
+
+namespace com::sun::star::presentation { class XSlideShowView; }
+
+/* Definition of UnoViewContainer class */
+
+namespace slideshow::internal
+    {
+        /** Contains UnoViews
+         */
+        class UnoViewContainer
+        {
+        public:
+            UnoViewContainer();
+            UnoViewContainer(const UnoViewContainer&) = delete;
+            UnoViewContainer& operator=(const UnoViewContainer&) = delete;
+
+            /** Add a view to this container
+
+                @return true, if the view was successfully added
+                (false is e.g. returned, if the view was already
+                added)
+             */
+            bool addView( const UnoViewSharedPtr& rView );
+
+            /** Remove a previously added a view from this container
+
+                @return the View object, if this view was successfully
+                removed, and an empty shared_ptr otherwise (e.g. if
+                this view wasn't added in the first place)
+            */
+            UnoViewSharedPtr removeView( const css::uno::Reference<css::presentation::XSlideShowView >& xView );
+
+            /// Dispose all stored views. Implies clear().
+            void dispose();
+
+            // the following parrots STL container concept methods
+            // ===================================================
+
+            bool empty() const { return maViews.empty(); }
+
+            UnoViewVector::iterator         begin() { return maViews.begin(); }
+            UnoViewVector::const_iterator   begin() const { return maViews.begin(); }
+            UnoViewVector::iterator         end() { return maViews.end(); }
+            UnoViewVector::const_iterator   end() const { return maViews.end(); }
+
+        private:
+            /// All added views
+            UnoViewVector   maViews;
+        };
+
+}
+
+#endif // INCLUDED_SLIDESHOW_SOURCE_INC_UNOVIEWCONTAINER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */