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diff --git a/sd/source/ui/inc/ViewTabBar.hxx b/sd/source/ui/inc/ViewTabBar.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_SD_SOURCE_UI_INC_VIEWTABBAR_HXX
+#define INCLUDED_SD_SOURCE_UI_INC_VIEWTABBAR_HXX
+
+#include <com/sun/star/drawing/framework/TabBarButton.hpp>
+#include <com/sun/star/drawing/framework/XTabBar.hpp>
+#include <com/sun/star/drawing/framework/XToolBar.hpp>
+#include <com/sun/star/drawing/framework/XConfigurationChangeListener.hpp>
+#include <com/sun/star/lang/XUnoTunnel.hpp>
+#include <vcl/tabctrl.hxx>
+#include <cppuhelper/compbase.hxx>
+#include "MutexOwner.hxx"
+
+#include <vector>
+
+namespace com::sun::star::drawing::framework { class XConfigurationController; }
+namespace com::sun::star::drawing::framework { class XResourceId; }
+namespace com::sun::star::drawing::framework { struct ConfigurationChangeEvent; }
+namespace com::sun::star::frame { class XController; }
+namespace vcl { class Window; }
+
+namespace sd {
+    class ViewShellBase;
+}
+
+namespace sd {
+
+typedef ::cppu::WeakComponentImplHelper <
+    css::drawing::framework::XToolBar,
+    css::drawing::framework::XTabBar,
+    css::drawing::framework::XConfigurationChangeListener,
+    css::lang::XUnoTunnel
+    > ViewTabBarInterfaceBase;
+
+/** Tab control for switching between views in the center pane.
+*/
+class ViewTabBar
+    : private sd::MutexOwner,
+      public ViewTabBarInterfaceBase
+{
+public:
+    ViewTabBar (
+        const css::uno::Reference< css::drawing::framework::XResourceId>& rxViewTabBarId,
+        const css::uno::Reference< css::frame::XController>& rxController);
+    virtual ~ViewTabBar() override;
+
+    virtual void SAL_CALL disposing() override;
+
+    const VclPtr< ::TabControl>& GetTabControl() const { return mpTabControl;}
+
+    bool ActivatePage();
+
+    //----- drawing::framework::XConfigurationChangeListener ------------------
+
+    virtual void SAL_CALL
+        notifyConfigurationChange (
+            const css::drawing::framework::ConfigurationChangeEvent& rEvent) override;
+
+    //----- XEventListener ----------------------------------------------------
+
+    virtual void SAL_CALL disposing(
+        const css::lang::EventObject& rEvent) override;
+
+    //----- XTabBar -----------------------------------------------------------
+
+    virtual void
+        SAL_CALL addTabBarButtonAfter (
+            const css::drawing::framework::TabBarButton& rButton,
+            const css::drawing::framework::TabBarButton& rAnchor) override;
+
+    virtual void
+        SAL_CALL appendTabBarButton (
+            const css::drawing::framework::TabBarButton& rButton) override;
+
+    virtual void
+        SAL_CALL removeTabBarButton (
+            const css::drawing::framework::TabBarButton& rButton) override;
+
+    virtual sal_Bool
+        SAL_CALL hasTabBarButton (
+            const css::drawing::framework::TabBarButton& rButton) override;
+
+    virtual css::uno::Sequence<css::drawing::framework::TabBarButton>
+        SAL_CALL getTabBarButtons() override;
+
+    //----- XResource ---------------------------------------------------------
+
+    virtual css::uno::Reference<
+        css::drawing::framework::XResourceId> SAL_CALL getResourceId() override;
+
+    virtual sal_Bool SAL_CALL isAnchorOnly() override;
+
+    //----- XUnoTunnel --------------------------------------------------------
+
+    static const css::uno::Sequence<sal_Int8>& getUnoTunnelId();
+
+    virtual sal_Int64 SAL_CALL getSomething (const css::uno::Sequence<sal_Int8>& rId) override;
+
+    /** The returned value is calculated as the difference between the
+        total height of the control and the height of its first tab page.
+        This can be considered a hack.
+        This procedure works only when the control is visible.  Calling this
+        method when the control is not visible results in returning a
+        default value.
+        To be on the safe side wait for this control to become visible and
+        the call this method again.
+    */
+    int GetHeight() const;
+
+    void AddTabBarButton (
+        const css::drawing::framework::TabBarButton& rButton,
+        const css::drawing::framework::TabBarButton& rAnchor);
+    void AddTabBarButton (
+        const css::drawing::framework::TabBarButton& rButton);
+    void RemoveTabBarButton (
+        const css::drawing::framework::TabBarButton& rButton);
+    bool HasTabBarButton (
+        const css::drawing::framework::TabBarButton& rButton);
+    css::uno::Sequence<css::drawing::framework::TabBarButton>
+        GetTabBarButtons();
+
+private:
+    VclPtr< ::TabControl> mpTabControl;
+    css::uno::Reference<css::frame::XController> mxController;
+    css::uno::Reference<css::drawing::framework::XConfigurationController> mxConfigurationController;
+    typedef ::std::vector<css::drawing::framework::TabBarButton> TabBarButtonList;
+    TabBarButtonList maTabBarButtons;
+    VclPtr<TabPage> mpTabPage;
+    css::uno::Reference<css::drawing::framework::XResourceId> mxViewTabBarId;
+    ViewShellBase* mpViewShellBase;
+
+    void UpdateActiveButton();
+    void AddTabBarButton (
+        const css::drawing::framework::TabBarButton& rButton,
+        sal_Int32 nPosition);
+    void UpdateTabBarButtons();
+
+    /** This method is called from the constructor to get the window for an
+        anchor ResourceId and pass it to our base class.  It has to be
+        static because it must not access any of the, not yet initialized
+        members.
+    */
+    static vcl::Window* GetAnchorWindow(
+        const css::uno::Reference<css::drawing::framework::XResourceId>& rxViewTabBarId,
+        const css::uno::Reference<css::frame::XController>& rxController);
+};
+
+} // end of namespace sd
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */