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diff --git a/sc/source/ui/inc/undobase.hxx b/sc/source/ui/inc/undobase.hxx
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+++ b/sc/source/ui/inc/undobase.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_SC_SOURCE_UI_INC_UNDOBASE_HXX
+#define INCLUDED_SC_SOURCE_UI_INC_UNDOBASE_HXX
+
+#include <svl/undo.hxx>
+#include <address.hxx>
+#include "docsh.hxx"
+
+#include <memory>
+#include <map>
+
+class SdrUndoAction;
+class ScRefUndoData;
+class ScDBData;
+
+class ScSimpleUndo: public SfxUndoAction
+{
+    ScSimpleUndo(const ScSimpleUndo&) = delete;
+
+public:
+    typedef std::map<SCTAB, std::unique_ptr<sc::ColumnSpanSet>> DataSpansType;
+
+                    ScSimpleUndo( ScDocShell* pDocSh );
+
+    virtual bool    Merge( SfxUndoAction *pNextAction ) override;
+    /// See SfxUndoAction::GetViewShellId().
+    ViewShellId GetViewShellId() const override;
+
+protected:
+    ScDocShell*     pDocShell;
+    std::unique_ptr<SfxUndoAction>
+                    pDetectiveUndo;
+    ViewShellId     mnViewShellId;
+
+    bool            IsPaintLocked() const { return pDocShell->IsPaintLocked(); }
+
+    bool            SetViewMarkData( const ScMarkData& rMarkData );
+
+    void            BeginUndo();
+    void            EndUndo();
+    void            BeginRedo();
+    void            EndRedo();
+
+    void BroadcastChanges( const ScRange& rRange );
+
+    /**
+     * Broadcast changes on specified spans.
+     *
+     * @param rSpans container that specifies all spans whose changes need to
+     *               be broadcasted.
+     */
+    void BroadcastChanges( const DataSpansType& rSpans );
+
+    static void     ShowTable( SCTAB nTab );
+    static void     ShowTable( const ScRange& rRange );
+};
+
+enum ScBlockUndoMode { SC_UNDO_SIMPLE, SC_UNDO_MANUALHEIGHT, SC_UNDO_AUTOHEIGHT };
+
+class ScBlockUndo: public ScSimpleUndo
+{
+public:
+                    ScBlockUndo( ScDocShell* pDocSh, const ScRange& rRange,
+                                 ScBlockUndoMode eBlockMode );
+    virtual         ~ScBlockUndo() override;
+
+protected:
+    ScRange         aBlockRange;
+    std::unique_ptr<SdrUndoAction> pDrawUndo;
+    ScBlockUndoMode eMode;
+
+    void            BeginUndo();
+    void            EndUndo();
+//  void            BeginRedo();
+    void            EndRedo();
+
+    bool            AdjustHeight();
+    void            ShowBlock();
+};
+
+class ScMultiBlockUndo: public ScSimpleUndo
+{
+public:
+    ScMultiBlockUndo(ScDocShell* pDocSh, const ScRangeList& rRanges);
+    virtual ~ScMultiBlockUndo() override;
+
+protected:
+    ScRangeList     maBlockRanges;
+    std::unique_ptr<SdrUndoAction> mpDrawUndo;
+
+    void BeginUndo();
+    void EndUndo();
+    void EndRedo();
+
+    void ShowBlock();
+};
+
+// for functions that act on a database range - takes care of the unnamed database range
+// (collected separately, before the undo action, for showing dialogs etc.)
+
+class ScDBFuncUndo: public ScSimpleUndo
+{
+protected:
+    std::unique_ptr<ScDBData> pAutoDBRange;
+    ScRange         aOriginalRange;
+
+public:
+                    ScDBFuncUndo( ScDocShell* pDocSh, const ScRange& rOriginal );
+    virtual         ~ScDBFuncUndo() override;
+
+    void            BeginUndo();
+    void            EndUndo();
+    void            BeginRedo();
+    void            EndRedo();
+};
+
+class ScMoveUndo: public ScSimpleUndo               // with references
+{
+public:
+                    ScMoveUndo( ScDocShell* pDocSh,
+                                ScDocumentUniquePtr pRefDoc, std::unique_ptr<ScRefUndoData> pRefData );
+    virtual         ~ScMoveUndo() override;
+
+protected:
+    std::unique_ptr<SdrUndoAction>  pDrawUndo;
+    ScDocumentUniquePtr             pRefUndoDoc;
+    std::unique_ptr<ScRefUndoData>  pRefUndoData;
+
+    void            BeginUndo();
+    void            EndUndo();
+//  void            BeginRedo();
+//  void            EndRedo();
+
+private:
+    void            UndoRef();
+};
+
+class ScUndoWrapper: public SfxUndoAction           // for manual merging of actions
+{
+    std::unique_ptr<SfxUndoAction>  pWrappedUndo;
+    ViewShellId                     mnViewShellId;
+
+public:
+                            ScUndoWrapper( std::unique_ptr<SfxUndoAction> pUndo );
+    virtual                 ~ScUndoWrapper() override;
+
+    SfxUndoAction*          GetWrappedUndo()        { return pWrappedUndo.get(); }
+    void                    ForgetWrappedUndo();
+
+    virtual void            Undo() override;
+    virtual void            Redo() override;
+    virtual void            Repeat(SfxRepeatTarget& rTarget) override;
+    virtual bool            CanRepeat(SfxRepeatTarget& rTarget) const override;
+    virtual bool            Merge( SfxUndoAction *pNextAction ) override;
+    virtual OUString        GetComment() const override;
+    virtual OUString        GetRepeatComment(SfxRepeatTarget&) const override;
+    /// See SfxUndoAction::GetViewShellId().
+    ViewShellId GetViewShellId() const override;
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */