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diff --git a/chart2/source/controller/inc/SelectionHelper.hxx b/chart2/source/controller/inc/SelectionHelper.hxx
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+++ b/chart2/source/controller/inc/SelectionHelper.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 "DrawViewWrapper.hxx"
+#include <ObjectIdentifier.hxx>
+
+class SdrObject;
+
+namespace com::sun::star::drawing { class XShape; }
+
+namespace chart
+{
+
+class Selection
+{
+public: //methods
+    bool hasSelection() const;
+
+    OUString const & getSelectedCID() const;
+    css::uno::Reference< css::drawing::XShape > const & getSelectedAdditionalShape() const;
+    const ObjectIdentifier& getSelectedOID() const { return m_aSelectedOID;}
+
+    bool isResizeableObjectSelected() const;
+    bool isRotateableObjectSelected( const rtl::Reference<::chart::ChartModel>& xChartModel ) const;
+    bool isDragableObjectSelected() const;
+
+    bool isAdditionalShapeSelected() const;
+
+    //returns true if selection has changed
+    bool setSelection( const OUString& rCID );
+    bool setSelection( const css::uno::Reference< css::drawing::XShape >& xShape );
+
+    void clearSelection();
+
+    //returns true if the selection has changed
+    bool maybeSwitchSelectionAfterSingleClickWasEnsured();
+    void resetPossibleSelectionAfterSingleClickWasEnsured();
+
+    void remindSelectionBeforeMouseDown();
+    bool isSelectionDifferentFromBeforeMouseDown() const;
+
+    void adaptSelectionToNewPos( const Point& rMousePos, DrawViewWrapper const * pDrawViewWrapper
+                                       , bool bIsRightMouse, bool bWaitingForDoubleClick );
+
+    void applySelection( DrawViewWrapper* pDrawViewWrapper );
+
+private: //member
+    //the selection could be given by a CID or by a shape
+    //if m_aSelectedObjectCID is not empty this indicates the selection
+    //the content of m_xSelectedShape is ignored in that case
+    //the strings are used for autogenerated chart specific objects
+    //the shape reference is used for additional shapes
+    ObjectIdentifier    m_aSelectedOID; //only single object selection so far
+    ObjectIdentifier    m_aSelectedOID_beforeMouseDown;
+    ObjectIdentifier    m_aSelectedOID_selectOnlyIfNoDoubleClickIsFollowing;
+};
+
+class SelectionHelper final : public MarkHandleProvider
+{
+public:
+    static bool             findNamedParent( SdrObject*& pInOutObject
+                                , OUString& rOutName
+                                , bool bGivenObjectMayBeResult );
+    static bool             findNamedParent( SdrObject*& pInOutObject
+                                , ObjectIdentifier& rOutObject
+                                , bool bGivenObjectMayBeResult );
+    static SdrObject*       getMarkHandlesObject( SdrObject* pObj );
+    static E3dScene*        getSceneToRotate( SdrObject* pObj );
+    static bool             isDragableObjectHitTwice( const Point& rMPos
+                                , const OUString& rNameOfSelectedObject
+                                , const DrawViewWrapper& rDrawViewWrapper );
+
+    static OUString getHitObjectCID(
+        const Point& rMPos,
+        DrawViewWrapper const & rDrawViewWrapper,
+        bool bGetDiagramInsteadOf_Wall=false );
+
+    static bool isRotateableObject( std::u16string_view rCID
+                    , const rtl::Reference<::chart::ChartModel>& xChartModel );
+
+    explicit SelectionHelper( SdrObject* pSelectedObj );
+    virtual ~SelectionHelper();
+
+    //MarkHandleProvider:
+    virtual bool getMarkHandles( SdrHdlList& rHdlList ) override;
+    virtual bool getFrameDragSingles() override;
+
+    SdrObject*   getObjectToMark();//sets also internally the mark object
+    //-> getMarkHandles will behave different if this method has found a Mark Object different from m_pSelectedObj
+
+private:
+    SdrObject*      m_pSelectedObj;//hit and logically selected object
+    SdrObject*      m_pMarkObj;//object that is marked instead to have more pretty handles
+};
+
+} //namespace chart
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */