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diff --git a/sw/source/core/inc/viewimp.hxx b/sw/source/core/inc/viewimp.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_SW_SOURCE_CORE_INC_VIEWIMP_HXX
+#define INCLUDED_SW_SOURCE_CORE_INC_VIEWIMP_HXX
+
+#include <tools/color.hxx>
+#include <svx/svdtypes.hxx>
+#include <swrect.hxx>
+#include <vector>
+#include <memory>
+
+class OutputDevice;
+class SwViewShell;
+class SwFlyFrame;
+class SwViewOption;
+class SwRegionRects;
+class SwFrame;
+class SwLayAction;
+class SwLayIdle;
+class SwDrawView;
+class SdrPageView;
+class SwPageFrame;
+class SwAccessibleMap;
+class SdrObject;
+class Fraction;
+class SwPrintData;
+class SwPagePreviewLayout;
+struct PreviewPage;
+class SwTextFrame;
+// --> OD #i76669#
+namespace sdr::contact { class ViewObjectContactRedirector; }
+// <--
+
+class SwViewShellImp
+{
+    friend class SwViewShell;
+
+    friend class SwLayAction;   // Lay- and IdleAction register and deregister
+    friend class SwLayIdle;
+
+    // for paint of page preview
+    friend class SwPagePreviewLayout;
+
+    SwViewShell *m_pShell;           // If someone passes an Imp, but needs a SwViewShell, we
+                                // keep a backlink here
+
+    std::unique_ptr<SwDrawView> m_pDrawView; // Our DrawView
+    SdrPageView *m_pSdrPageView;  // Exactly one Page for our DrawView
+
+    SwPageFrame     *m_pFirstVisiblePage; // Always points to the first visible Page
+    std::unique_ptr<SwRegionRects> m_pRegion; // Collector of Paintrects from the LayAction
+
+    SwLayAction   *m_pLayAction;      // Is set if an Action object exists
+                                 // Is registered by the SwLayAction ctor and deregistered by the dtor
+    SwLayIdle     *m_pIdleAct;     // The same as SwLayAction for SwLayIdle
+
+    /// note: the map is *uniquely* owned here - the shared_ptr is only
+    /// used so that SwAccessibleContext can check via weak_ptr that it's alive
+    std::shared_ptr<SwAccessibleMap> m_pAccessibleMap;
+
+    bool m_bFirstPageInvalid : 1; // Pointer to the first Page invalid?
+    bool m_bResetHdlHiddenPaint : 1; // Ditto
+    bool m_bSmoothUpdate : 1; // For SmoothScroll
+    bool m_bStopSmooth : 1;
+
+    sal_uInt16 m_nRestoreActions  ; // Count for the Action that need to be restored (UNO)
+    SwRect m_aSmoothRect;
+
+    std::unique_ptr<SwPagePreviewLayout> m_pPagePreviewLayout;
+
+    void SetFirstVisPage(OutputDevice const * pRenderContext); // Recalculate the first visible Page
+
+    void StartAction();         // Show handle and hide
+    void EndAction();           // Called by SwViewShell::ImplXXXAction
+    void LockPaint();           // Ditto; called by SwViewShell::ImplLockPaint
+    void UnlockPaint();
+
+private:
+
+    SwAccessibleMap *CreateAccessibleMap();
+
+    /** invalidate CONTENT_FLOWS_FROM/_TO relation for paragraphs
+
+        #i27138#
+        implementation for wrapper method
+        <SwViewShell::InvalidateAccessibleParaFlowRelation(..)>
+
+        @param _pFromTextFrame
+        input parameter - paragraph frame, for which the relation CONTENT_FLOWS_FROM
+        has to be invalidated.
+        If NULL, no CONTENT_FLOWS_FROM relation has to be invalidated
+
+        @param _pToTextFrame
+        input parameter - paragraph frame, for which the relation CONTENT_FLOWS_TO
+        has to be invalidated.
+        If NULL, no CONTENT_FLOWS_TO relation has to be invalidated
+    */
+    void InvalidateAccessibleParaFlowRelation_( const SwTextFrame* _pFromTextFrame,
+                                                const SwTextFrame* _pToTextFrame );
+
+    /** invalidate text selection for paragraphs
+
+        #i27301#
+        implementation for wrapper method
+        <SwViewShell::InvalidateAccessibleParaTextSelection(..)>
+    */
+    void InvalidateAccessibleParaTextSelection_();
+
+    /** invalidate attributes for paragraphs and paragraph's characters
+
+        #i88069#
+        implementation for wrapper method
+        <SwViewShell::InvalidateAccessibleParaAttrs(..)>
+    */
+    void InvalidateAccessibleParaAttrs_( const SwTextFrame& rTextFrame );
+
+public:
+    SwViewShellImp( SwViewShell * );
+    ~SwViewShellImp();
+    void Init( const SwViewOption * ); /// Only for SwViewShell::Init()
+
+    const SwViewShell *GetShell() const { return m_pShell; }
+          SwViewShell *GetShell()       { return m_pShell; }
+
+    Color GetRetoucheColor() const;
+
+    /// Management of the first visible Page
+    const SwPageFrame *GetFirstVisPage(OutputDevice const * pRenderContext) const;
+          SwPageFrame *GetFirstVisPage(OutputDevice const * pRenderContext);
+    void SetFirstVisPageInvalid() { m_bFirstPageInvalid = true; }
+
+    bool AddPaintRect( const SwRect &rRect );
+    SwRegionRects *GetRegion()      { return m_pRegion.get(); }
+    void DelRegion();
+
+    /// New Interface for StarView Drawing
+    bool  HasDrawView()             const { return nullptr != m_pDrawView; }
+          SwDrawView* GetDrawView()       { return m_pDrawView.get(); }
+    const SwDrawView* GetDrawView() const { return m_pDrawView.get(); }
+          SdrPageView*GetPageView()       { return m_pSdrPageView; }
+    const SdrPageView*GetPageView() const { return m_pSdrPageView; }
+    void MakeDrawView();
+
+    /**
+     * @param _pPageBackgrdColor for setting this color as the background color
+     * at the outliner of the draw view for painting layers "hell" and "heaven"
+     *
+     * @param _bIsPageRightToLeft for the horizontal text direction of the page
+     * in order to set the default horizontal text direction at the outliner of
+     * the draw view for painting layers "hell" and "heaven"
+     */
+    void   PaintLayer( const SdrLayerID _nLayerID,
+                       SwPrintData const*const pPrintData,
+                       SwPageFrame const& rPageFrame,
+                       const SwRect& _rRect,
+                       const Color* _pPageBackgrdColor,
+                       const bool _bIsPageRightToLeft,
+                       sdr::contact::ViewObjectContactRedirector* pRedirector );
+
+    /**
+     * Is passed to the DrawEngine as a Link and decides what is painted
+     * or not and in what way
+     */
+
+    // Interface Drawing
+    bool IsDragPossible( const Point &rPoint );
+    void NotifySizeChg( const Size &rNewSz );
+
+    /// SS for the Lay-/IdleAction and relatives
+    bool  IsAction() const                   { return m_pLayAction  != nullptr; }
+    bool  IsIdleAction() const               { return m_pIdleAct != nullptr; }
+          SwLayAction &GetLayAction()        { return *m_pLayAction; }
+    const SwLayAction &GetLayAction() const  { return *m_pLayAction; }
+
+    /**
+     * If an Action is running we ask it to check whether it's time
+     * to enable the WaitCursor
+     */
+    void CheckWaitCursor();
+
+    /// Asks the LayAction if present
+    bool IsCalcLayoutProgress() const;
+
+    /**
+     * @returns true if a LayAction is running
+     *
+     * There we also set the Flag for ExpressionFields
+     */
+    bool IsUpdateExpFields();
+
+    void    SetRestoreActions(sal_uInt16 nSet){m_nRestoreActions = nSet;}
+    sal_uInt16  GetRestoreActions() const{return m_nRestoreActions;}
+
+    void InitPagePreviewLayout();
+
+    SwPagePreviewLayout* PagePreviewLayout()
+    {
+        return m_pPagePreviewLayout.get();
+    }
+
+    /// Is this view accessible?
+    bool IsAccessible() const { return m_pAccessibleMap != nullptr; }
+
+    inline SwAccessibleMap& GetAccessibleMap();
+
+    /// Update (this) accessible view
+    void UpdateAccessible();
+
+    /// Remove a frame from the accessible view
+    void DisposeAccessible( const SwFrame *pFrame, const SdrObject *pObj,
+                            bool bRecursive, bool bCanSkipInvisible );
+    inline void DisposeAccessibleFrame( const SwFrame *pFrame,
+                               bool bRecursive = false );
+    inline void DisposeAccessibleObj( const SdrObject *pObj, bool bCanSkipInvisible );
+
+    /// Move a frame's position in the accessible view
+    void MoveAccessible( const SwFrame *pFrame, const SdrObject *pObj,
+                         const SwRect& rOldFrame );
+    inline void MoveAccessibleFrame( const SwFrame *pFrame, const SwRect& rOldFrame );
+
+    /// Add a frame in the accessible view
+    inline void AddAccessibleFrame( const SwFrame *pFrame );
+
+    inline void AddAccessibleObj( const SdrObject *pObj );
+
+    /// Invalidate accessible frame's content
+    void InvalidateAccessibleFrameContent( const SwFrame *pFrame );
+
+    /// Invalidate accessible frame's cursor position
+    void InvalidateAccessibleCursorPosition( const SwFrame *pFrame );
+
+    /// Invalidate editable state for all accessible frames
+    void InvalidateAccessibleEditableState( bool bAllShells,
+                                               const SwFrame *pFrame=nullptr );
+
+    /// Invalidate frame's relation set (for chained frames)
+    void InvalidateAccessibleRelationSet( const SwFlyFrame *pMaster,
+                                          const SwFlyFrame *pFollow );
+
+    /// update data for accessible preview
+    /// change method signature due to new page preview functionality
+    void UpdateAccessiblePreview( const std::vector<std::unique_ptr<PreviewPage>>& _rPreviewPages,
+                                  const Fraction&  _rScale,
+                                  const SwPageFrame* _pSelectedPageFrame,
+                                  const Size&      _rPreviewWinSize );
+
+    void InvalidateAccessiblePreviewSelection( sal_uInt16 nSelPage );
+
+    /// Fire all accessible events that have been collected so far
+    void FireAccessibleEvents();
+};
+
+inline SwAccessibleMap& SwViewShellImp::GetAccessibleMap()
+{
+    if( !m_pAccessibleMap )
+        CreateAccessibleMap();
+
+    return *m_pAccessibleMap;
+}
+
+inline void SwViewShellImp::DisposeAccessibleFrame( const SwFrame *pFrame,
+                               bool bRecursive )
+{
+    DisposeAccessible( pFrame, nullptr, bRecursive, true );
+}
+
+inline void SwViewShellImp::DisposeAccessibleObj( const SdrObject *pObj, bool bCanSkipInvisible )
+{
+    DisposeAccessible( nullptr, pObj, false, bCanSkipInvisible );
+}
+
+inline void SwViewShellImp::MoveAccessibleFrame( const SwFrame *pFrame,
+                                          const SwRect& rOldFrame )
+{
+    MoveAccessible( pFrame, nullptr, rOldFrame );
+}
+
+inline void SwViewShellImp::AddAccessibleFrame( const SwFrame *pFrame )
+{
+    SwRect aEmptyRect;
+    MoveAccessible( pFrame, nullptr, aEmptyRect );
+}
+
+inline void SwViewShellImp::AddAccessibleObj( const SdrObject *pObj )
+{
+    SwRect aEmptyRect;
+    MoveAccessible( nullptr, pObj, aEmptyRect );
+}
+#endif // INCLUDED_SW_SOURCE_CORE_INC_VIEWIMP_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */