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diff --git a/sw/source/core/inc/UndoManager.hxx b/sw/source/core/inc/UndoManager.hxx
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+++ b/sw/source/core/inc/UndoManager.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_UNDOMANAGER_HXX
+#define INCLUDED_SW_SOURCE_CORE_INC_UNDOMANAGER_HXX
+
+#include <IDocumentUndoRedo.hxx>
+#include <svx/sdrundomanager.hxx>
+#include <ndarr.hxx>
+#include <memory>
+
+class IDocumentDrawModelAccess;
+class IDocumentRedlineAccess;
+class IDocumentState;
+class SwDocShell;
+class SwView;
+
+namespace sw {
+
+class SAL_DLLPUBLIC_RTTI UndoManager
+    : public IDocumentUndoRedo
+    , public SdrUndoManager
+{
+public:
+    UndoManager(std::shared_ptr<SwNodes> const & pUndoNodes,
+        IDocumentDrawModelAccess & rDrawModelAccess,
+        IDocumentRedlineAccess & rRedlineAccess,
+        IDocumentState & rState);
+
+    /** IDocumentUndoRedo */
+    virtual void DoUndo(bool const bDoUndo) override;
+    virtual bool DoesUndo() const override;
+    virtual void DoGroupUndo(bool const bDoUndo) override;
+    virtual bool DoesGroupUndo() const override;
+    virtual void DoDrawUndo(bool const bDoUndo) override;
+    virtual bool DoesDrawUndo() const override;
+    void DoRepair(bool bRepair) override;
+    bool DoesRepair() const override;
+    virtual void SetUndoNoModifiedPosition() override;
+    virtual void LockUndoNoModifiedPosition() override;
+    virtual void UnLockUndoNoModifiedPosition() override;
+    virtual void SetUndoNoResetModified() override;
+    virtual bool IsUndoNoResetModified() const override;
+
+    virtual SwUndoId StartUndo(SwUndoId const eUndoId,
+                               SwRewriter const*const pRewriter) override;
+    virtual SwUndoId EndUndo(SwUndoId const eUndoId,
+                             SwRewriter const*const pRewriter) override;
+    virtual void DelAllUndoObj() override;
+    virtual bool GetLastUndoInfo(OUString *const o_pStr,
+                                 SwUndoId *const o_pId,
+                                 const SwView* pView = nullptr) const override;
+    virtual SwUndoComments_t GetUndoComments() const override;
+    virtual bool GetFirstRedoInfo(OUString *const o_pStr,
+                                  SwUndoId *const o_pId,
+                                  const SwView* pView = nullptr) const override;
+    virtual SwUndoComments_t GetRedoComments() const override;
+    virtual bool Repeat(::sw::RepeatContext & rContext,
+                        sal_uInt16 const nRepeatCnt) override;
+    virtual SwUndoId GetRepeatInfo(OUString *const o_pStr) const override;
+    virtual void AppendUndo(std::unique_ptr<SwUndo> pUndo) override;
+    virtual void ClearRedo() override;
+    virtual bool IsUndoNodes(SwNodes const& rNodes) const override;
+    virtual size_t GetUndoActionCount(const bool bCurrentLevel = true) const override;
+    size_t GetRedoActionCount(const bool bCurrentLevel = true) const override;
+    void SetView(SwView* pView) override;
+
+    // SfxUndoManager
+    virtual void AddUndoAction(std::unique_ptr<SfxUndoAction> pAction,
+                                   bool bTryMerg = false) override;
+    virtual bool Undo() override;
+    virtual bool Redo() override;
+
+    SwUndo * RemoveLastUndo();
+    SwUndo * GetLastUndo();
+
+    SwNodes const& GetUndoNodes() const;
+    SwNodes      & GetUndoNodes();
+    void SetDocShell(SwDocShell* pDocShell);
+
+protected:
+    virtual void EmptyActionsChanged() override;
+
+private:
+    IDocumentDrawModelAccess & m_rDrawModelAccess;
+    IDocumentRedlineAccess & m_rRedlineAccess;
+    IDocumentState & m_rState;
+
+    /// Undo nodes array: content not currently in document
+    std::shared_ptr<SwNodes> m_xUndoNodes;
+
+    bool m_bGroupUndo       : 1;    // TRUE: Undo grouping enabled
+    bool m_bDrawUndo        : 1;    // TRUE: Draw Undo enabled
+    /// If true, then repair mode is enabled.
+    bool m_bRepair;
+    bool m_bLockUndoNoModifiedPosition : 1;
+    /// set the IgnoreRepeat flag on every added action
+    bool m_isAddWithIgnoreRepeat;
+    /// position in Undo-Array at which Doc was saved (and is not modified)
+    UndoStackMark m_UndoSaveMark;
+    SwDocShell* m_pDocShell;
+    SwView* m_pView;
+
+    enum class UndoOrRedoType { Undo, Redo };
+    bool impl_DoUndoRedo(UndoOrRedoType undoOrRedo);
+
+    // UGLY: should not be called
+    using SdrUndoManager::Repeat;
+};
+
+} // namespace sw
+
+#endif // INCLUDED_SW_SOURCE_CORE_INC_UNDOMANAGER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */