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diff --git a/svx/inc/textchainflow.hxx b/svx/inc/textchainflow.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 "textchain.hxx"
+#include <memory>
+
+class SdrTextObj;
+class SdrOutliner;
+class NonOverflowingText;
+class OverflowingText;
+class TextChain;
+class OutlinerParaObject;
+class OFlowChainedText;
+class UFlowChainedText;
+
+class TextChainFlow
+{
+public:
+    TextChainFlow(SdrTextObj* pChainTarget);
+    virtual ~TextChainFlow();
+
+    // Check for flow events in Outliner
+    virtual void CheckForFlowEvents(SdrOutliner*);
+
+    void ExecuteUnderflow(SdrOutliner*);
+
+    // Uses two outliners: one for the non-overflow text and one for overflowing (might be the same)
+    void ExecuteOverflow(SdrOutliner*, SdrOutliner*);
+
+    bool IsOverflow() const;
+    bool IsUnderflow() const;
+
+    SdrTextObj* GetLinkTarget() const;
+
+protected:
+    void impCheckForFlowEvents(SdrOutliner*, SdrOutliner*);
+
+    TextChain* GetTextChain() const;
+
+    virtual void impLeaveOnlyNonOverflowingText(SdrOutliner*);
+    void impMoveChainedTextToNextLink(SdrOutliner*);
+
+    virtual void impSetFlowOutlinerParams(SdrOutliner*, SdrOutliner*);
+
+private:
+    void impUpdateCursorInfo();
+
+protected:
+    std::unique_ptr<OFlowChainedText> mpOverflChText;
+    std::unique_ptr<UFlowChainedText> mpUnderflChText;
+    // Cursor related
+    ESelection maOverflowPosSel;
+    ESelection maPostChainingSel;
+    bool mbPossiblyCursorOut;
+
+private:
+    SdrTextObj* mpTargetLink;
+    SdrTextObj* mpNextLink;
+    TextChain* mpTextChain;
+    bool mbOFisUFinduced;
+    bool bUnderflow;
+    bool bOverflow;
+};
+
+// NOTE: EditingTextChainFlow might be strongly coupled with behavior in SdrTextObj::onChainingEvent
+class EditingTextChainFlow final : public TextChainFlow
+{
+public:
+    EditingTextChainFlow(SdrTextObj*);
+    virtual void CheckForFlowEvents(SdrOutliner*) override;
+
+    //virtual void ExecuteOverflow(SdrOutliner *, SdrOutliner *) override;
+
+private:
+    virtual void impLeaveOnlyNonOverflowingText(SdrOutliner*) override;
+
+    virtual void impSetFlowOutlinerParams(SdrOutliner*, SdrOutliner*) override;
+
+    void impBroadcastCursorInfo() const;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */