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diff --git a/chart2/source/controller/inc/ItemConverter.hxx b/chart2/source/controller/inc/ItemConverter.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_CHART2_SOURCE_CONTROLLER_INC_ITEMCONVERTER_HXX
+#define INCLUDED_CHART2_SOURCE_CONTROLLER_INC_ITEMCONVERTER_HXX
+
+#include <unotools/eventlisteneradapter.hxx>
+#include <svl/itemset.hxx>
+
+#include <utility>
+
+namespace com::sun::star::beans { class XPropertySet; }
+namespace com::sun::star::beans { class XPropertySetInfo; }
+
+namespace chart::wrapper {
+
+
+/** This class serves for conversion between properties of an XPropertySet and
+    SfxItems in SfxItemSets.
+
+    With this helper classes, you can feed dialogs with XPropertySets and let
+    those modify by the dialogs.
+
+    You must implement GetWhichPairs() such that an SfxItemSet created with
+    CreateEmptyItemSet() is able to hold all items that may be mapped.
+
+    You also have to implement GetItemProperty(), in order to return the
+    property name for a given which-id together with the corresponding member-id
+    that has to be used for conversion in QueryValue/PutValue.
+
+    FillSpecialItem and ApplySpecialItem may be used for special handling of
+    individual item, e.g. if you need member-ids in QueryValue/PutValue
+
+    A typical use could be the following:
+
+    ::comphelper::ChartTypeItemConverter aItemConverter( xPropertySet, GetItemPool() );
+    SfxItemSet aItemSet = aItemConverter.CreateEmptyItemSet();
+    aItemConverter.FillItemSet( aItemSet );
+    bool bChanged = false;
+
+    MyDialog aDlg( aItemSet );
+    if( aDlg.Execute() == RET_OK )
+    {
+        const SfxItemSet* pOutItemSet = aDlg.GetOutputItemSet();
+        if( pOutItemSet )
+            bChanged = aItemConverter.ApplyItemSet( *pOutItemSet );
+    }
+
+    if( bChanged )
+    {
+        [ apply model changes to view ]
+    }
+ */
+class ItemConverter :
+        public ::utl::OEventListenerAdapter
+{
+public:
+    /** Construct an item converter that uses the given property set for
+        reading/writing converted items
+     */
+    ItemConverter(
+            const css::uno::Reference< css::beans::XPropertySet > & rPropertySet ,
+            SfxItemPool& rItemPool );
+    virtual ~ItemConverter() override;
+
+    typedef sal_uInt16          tWhichIdType;
+    typedef OUString tPropertyNameType;
+    typedef sal_uInt8            tMemberIdType;
+
+    typedef std::pair< tPropertyNameType, tMemberIdType > tPropertyNameWithMemberId;
+
+    /** applies all properties that can be mapped to items into the given item
+        set.
+
+        Call this method before opening a dialog.
+
+        @param rOutItemSet
+            the SfxItemSet is filled with all items that are a result of a
+            conversion from a property of the internal XPropertySet.
+     */
+    virtual void FillItemSet( SfxItemSet & rOutItemSet ) const;
+
+    /** applies all properties that are results of a conversion from all items
+        in rItemSet to the internal XPropertySet.
+
+        Call this method after a dialog was closed with OK
+
+        @return true, if any properties have been changed, false otherwise.
+     */
+    virtual bool ApplyItemSet( const SfxItemSet & rItemSet );
+
+    /** creates an empty item set using the given pool or a common pool if empty
+        (see GetItemPool) and allowing all items given in the ranges returned by
+        GetWhichPairs.
+     */
+    SfxItemSet CreateEmptyItemSet() const;
+
+    /** Invalidates all items in rDestSet, that are set (state SfxItemState::SET) in
+        both item sets (rDestSet and rSourceSet) and have differing content.
+     */
+    static void InvalidateUnequalItems( SfxItemSet &rDestSet, const SfxItemSet &rSourceSet );
+
+protected:
+
+    /** implement this method to provide an array of which-ranges of the form:
+
+        const sal_uInt16 aMyPairs[] =
+        {
+            from_1, to_1,
+            from_2, to_2,
+            ...
+            from_n, to_n,
+            0
+        };
+    */
+    virtual const sal_uInt16 * GetWhichPairs() const = 0;
+
+    /** implement this method to return a Property object for a given which id.
+
+        @param rOutProperty
+            If true is returned, this contains the property name and the
+            corresponding Member-Id.
+
+        @return true, if the item can be mapped to a property.
+     */
+    virtual bool GetItemProperty( tWhichIdType nWhichId, tPropertyNameWithMemberId & rOutProperty ) const = 0;
+
+    /** for items that can not be mapped directly to a property.
+
+        This method is called from FillItemSet(), if GetItemProperty() returns
+        false.
+
+        The default implementation does nothing except showing an assertion
+
+        @throws css::uno::Exception
+     */
+    virtual void FillSpecialItem( sal_uInt16 nWhichId, SfxItemSet & rOutItemSet ) const;
+
+    /** for items that can not be mapped directly to a property.
+
+        This method is called from ApplyItemSet(), if GetItemProperty() returns
+        false.
+
+        The default implementation returns just false and shows an assertion
+
+        @return true if the item changed a property, false otherwise.
+
+        @throws css::uno::Exception
+     */
+    virtual bool ApplySpecialItem( sal_uInt16 nWhichId, const SfxItemSet & rItemSet );
+
+    /// Returns the pool
+    SfxItemPool & GetItemPool() const { return m_rItemPool;}
+
+    /** Returns the XPropertySet that was given in the CTOR and is used to apply
+        items in ApplyItemSet().
+     */
+    const css::uno::Reference< css::beans::XPropertySet >&  GetPropertySet() const { return m_xPropertySet;}
+
+    // ____ ::utl::OEventListenerAdapter ____
+    virtual void _disposing( const css::lang::EventObject& rSource ) override;
+
+protected:
+    /** sets a new property set, that you get with GetPropertySet().  It should
+        not be necessary to use this method.  It is introduced to allow changing
+        the regression type of a regression curve which changes the object
+        identity.
+     */
+    void resetPropertySet( const css::uno::Reference< css::beans::XPropertySet > & xPropSet );
+
+private:
+    css::uno::Reference< css::beans::XPropertySet >     m_xPropertySet;
+    css::uno::Reference< css::beans::XPropertySetInfo > m_xPropertySetInfo;
+
+    SfxItemPool&                                    m_rItemPool;
+};
+
+}
+
+// INCLUDED_CHART2_SOURCE_CONTROLLER_INC_ITEMCONVERTER_HXX
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */