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diff --git a/sd/source/ui/sidebar/LayoutMenu.hxx b/sd/source/ui/sidebar/LayoutMenu.hxx
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+++ b/sd/source/ui/sidebar/LayoutMenu.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 .
+ */
+
+#pragma once
+
+#include <sfx2/sidebar/ILayoutableWindow.hxx>
+#include <sfx2/sidebar/PanelLayout.hxx>
+
+#include <svtools/valueset.hxx>
+#include <sfx2/request.hxx>
+#include <xmloff/autolayout.hxx>
+
+namespace com::sun::star::frame
+{
+class XStatusListener;
+}
+namespace com::sun::star::ui
+{
+class XSidebar;
+}
+
+namespace sd
+{
+class DrawDocShell;
+class ViewShellBase;
+}
+
+namespace sd::tools
+{
+class EventMultiplexerEvent;
+}
+
+namespace sd::sidebar
+{
+class LayoutValueSet;
+
+class LayoutMenu : public PanelLayout, public sfx2::sidebar::ILayoutableWindow
+{
+public:
+    /** Create a new layout menu.  Depending on the given flag it
+        displays its own scroll bar or lets a surrounding window
+        handle that.
+        @param i_pParent
+            the parent node in the control tree
+        @param i_rPanelViewShell
+            the view shell of the task pane.
+    */
+    LayoutMenu(weld::Widget* pParent, ViewShellBase& rViewShellBase,
+               const css::uno::Reference<css::ui::XSidebar>& rxSidebar);
+    virtual ~LayoutMenu() override;
+
+    void Dispose();
+
+    /** Return a numerical value representing the currently selected
+        layout.
+    */
+    AutoLayout GetSelectedAutoLayout() const;
+
+    // From ILayoutableWindow
+    virtual css::ui::LayoutSize GetHeightForWidth(const sal_Int32 nWidth) override;
+
+    /** Call this method when the set of displayed layouts is not up-to-date
+        anymore.  It will re-assemble this set according to the current
+        settings.
+    */
+    void InvalidateContent();
+
+    /** The context menu is requested over this ShowContextMenu() method.
+    */
+    void ShowContextMenu(const Point* pPos);
+
+    /** Call Fill() when switching to or from high contrast mode so that the
+        correct set of icons is displayed.
+    */
+    virtual void DataChanged(const DataChangedEvent& rEvent) override;
+
+private:
+    ViewShellBase& mrBase;
+
+    std::unique_ptr<LayoutValueSet> mxLayoutValueSet;
+    std::unique_ptr<weld::CustomWeld> mxLayoutValueSetWin;
+
+    /** If we are asked for the preferred window size, then use this
+        many columns for the calculation.
+    */
+    css::uno::Reference<css::frame::XStatusListener> mxListener;
+    bool mbIsMainViewChangePending;
+    css::uno::Reference<css::ui::XSidebar> mxSidebar;
+    bool mbIsDisposed;
+
+    /** Fill the value set with the layouts that are applicable to the
+        current main view shell.
+    */
+    void Fill();
+
+    /** Remove all items from the value set.
+    */
+    void Clear();
+
+    /** Assign the given layout to all selected slides of a slide sorter.
+        If no slide sorter is active then this call is ignored.  The slide
+        sorter in the center pane is preferred if the choice exists.
+    */
+    void AssignLayoutToSelectedSlides(AutoLayout aLayout);
+
+    /** Insert a new page with the given layout.  The page is inserted via
+        the main view shell, i.e. its SID_INSERTPAGE slot is called. If it
+        does not support this slot then inserting a new page does not take
+        place.  The new page is inserted after the currently active one (the
+        one returned by ViewShell::GetActualPage().)
+    */
+    void InsertPageWithLayout(AutoLayout aLayout);
+
+    /** Create a request structure that can be used with the SID_INSERTPAGE
+        and SID_MODIFYPAGE slots.  The parameters are set so that the given
+        layout is assigned to the current page of the main view shell.
+        @param nSlotId
+            Supported slots are SID_INSERTPAGE and SID_MODIFYPAGE.
+        @param aLayout
+            Layout of the page to insert or to assign.
+    */
+    SfxRequest CreateRequest(sal_uInt16 nSlotId, AutoLayout aLayout);
+
+    /** Select the layout that is used by the current page.
+    */
+    void UpdateSelection();
+
+    // internal ctor
+    void implConstruct(DrawDocShell& rDocumentShell);
+
+    /** When clicked then set the current page of the view in the center pane.
+    */
+    DECL_LINK(ClickHandler, ValueSet*, void);
+    DECL_LINK(StateChangeHandler, const OUString&, void);
+    DECL_LINK(EventMultiplexerListener, ::sd::tools::EventMultiplexerEvent&, void);
+    void OnMenuItemSelected(std::string_view ident);
+};
+
+} // end of namespace ::sd::toolpanel
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */