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diff --git a/sc/inc/editsrc.hxx b/sc/inc/editsrc.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_INC_EDITSRC_HXX
+#define INCLUDED_SC_INC_EDITSRC_HXX
+
+#include "address.hxx"
+#include <editeng/unoedsrc.hxx>
+#include <svl/lstner.hxx>
+
+#include <memory>
+
+class ScEditEngineDefaulter;
+class SvxEditEngineForwarder;
+
+class ScDocShell;
+class ScCellTextData;
+class ScHeaderFooterTextData;
+class ScAccessibleTextData;
+class SdrObject;
+
+class ScEditSource : public SvxEditSource
+{
+public:
+    virtual ScEditEngineDefaulter* GetEditEngine() = 0;
+};
+
+/**
+ * ScHeaderFooterTextObj keeps the authoritative copy of
+ * ScHeaderFooterTextData that this class holds reference to.  It's a
+ * reference instead of a copy to avoid broadcasting changes to the
+ * authoritative copy.
+ */
+class ScHeaderFooterEditSource final : public ScEditSource
+{
+private:
+    ScHeaderFooterTextData& mrTextData;
+
+public:
+    ScHeaderFooterEditSource(ScHeaderFooterTextData& rData);
+    virtual ~ScHeaderFooterEditSource() override;
+
+    //  GetEditEngine is needed because the forwarder doesn't have field functions
+    virtual ScEditEngineDefaulter* GetEditEngine() override;
+
+    virtual std::unique_ptr<SvxEditSource> Clone() const override;
+    virtual SvxTextForwarder*   GetTextForwarder() override;
+    virtual void                UpdateData() override;
+};
+
+/**
+ * Data (incl. EditEngine) for cell EditSource is now shared in
+ * ScCellTextData.
+ *
+ * ScCellEditSource with local copy of ScCellTextData is used by
+ * ScCellFieldsObj, ScCellFieldObj.
+ */
+class ScCellEditSource final : public ScEditSource
+{
+private:
+    std::unique_ptr<ScCellTextData> pCellTextData;
+
+public:
+    ScCellEditSource(ScDocShell* pDocSh, const ScAddress& rP);
+    virtual ~ScCellEditSource() override;
+
+    //  GetEditEngine is needed because the forwarder doesn't have field functions
+    virtual ScEditEngineDefaulter* GetEditEngine() override;
+
+    virtual std::unique_ptr<SvxEditSource> Clone() const override;
+    virtual SvxTextForwarder* GetTextForwarder() override;
+
+    virtual void UpdateData() override;
+
+    void SetDoUpdateData(bool bValue);
+    bool IsDirty() const;
+};
+
+class ScAnnotationEditSource final : public SvxEditSource, public SfxListener
+{
+private:
+    ScDocShell*             pDocShell;
+    ScAddress               aCellPos;
+    std::unique_ptr<ScEditEngineDefaulter>  pEditEngine;
+    std::unique_ptr<SvxEditEngineForwarder> pForwarder;
+    bool                    bDataValid;
+
+    SdrObject*                  GetCaptionObj();
+public:
+                                ScAnnotationEditSource(ScDocShell* pDocSh, const ScAddress& rP);
+    virtual                     ~ScAnnotationEditSource() override;
+
+    virtual std::unique_ptr<SvxEditSource> Clone() const override ;
+    virtual SvxTextForwarder*   GetTextForwarder() override;
+    virtual void                UpdateData() override;
+
+    virtual void                Notify( SfxBroadcaster& rBC, const SfxHint& rHint ) override;
+};
+
+//  EditSource with a shared forwarder for all children of one text object
+
+class ScSimpleEditSource final : public SvxEditSource
+{
+private:
+    SvxTextForwarder*   pForwarder;
+
+public:
+                        ScSimpleEditSource( SvxTextForwarder* pForw );
+    virtual             ~ScSimpleEditSource() override;
+
+    virtual std::unique_ptr<SvxEditSource> Clone() const override ;
+    virtual SvxTextForwarder*   GetTextForwarder() override;
+    virtual void                UpdateData() override;
+
+};
+
+class ScAccessibilityEditSource final : public SvxEditSource
+{
+private:
+    ::std::unique_ptr < ScAccessibleTextData > mpAccessibleTextData;
+
+public:
+                        ScAccessibilityEditSource( ::std::unique_ptr < ScAccessibleTextData > && pAccessibleCellTextData );
+    virtual             ~ScAccessibilityEditSource() override;
+
+    virtual std::unique_ptr<SvxEditSource> Clone() const override;
+    virtual SvxTextForwarder*   GetTextForwarder() override;
+    virtual SvxViewForwarder*   GetViewForwarder() override;
+    virtual SvxEditViewForwarder*   GetEditViewForwarder( bool bCreate = false ) override;
+    virtual void                UpdateData() override;
+    virtual SfxBroadcaster&     GetBroadcaster() const override;
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */