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diff --git a/xmloff/source/chart/SchXMLTools.hxx b/xmloff/source/chart/SchXMLTools.hxx
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+++ b/xmloff/source/chart/SchXMLTools.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 <rtl/ustring.hxx>
+#include <xmloff/xmltoken.hxx>
+#include "transporttypes.hxx"
+
+#include <com/sun/star/frame/XModel.hpp>
+#include <com/sun/star/chart2/data/XLabeledDataSequence2.hpp>
+
+namespace com::sun::star {
+    namespace chart2 {
+        class XChartDocument;
+        class XRegressionCurve;
+        namespace data {
+            class XDataProvider;
+        }
+    }
+}
+
+class XMLPropStyleContext;
+class SvXMLStylesContext;
+class SvXMLExport;
+
+namespace SchXMLTools
+{
+    bool isDocumentGeneratedWithOpenOfficeOlderThan2_0( const css::uno::Reference< css::frame::XModel >& xChartModel);
+    bool isDocumentGeneratedWithOpenOfficeOlderThan2_3( const css::uno::Reference< css::frame::XModel >& xChartModel);
+    bool isDocumentGeneratedWithOpenOfficeOlderThan2_4( const css::uno::Reference< css::frame::XModel >& xChartModel);
+    bool isDocumentGeneratedWithOpenOfficeOlderThan3_0( const css::uno::Reference< css::frame::XModel >& xChartModel);
+    bool isDocumentGeneratedWithOpenOfficeOlderThan3_3( const css::uno::Reference< css::frame::XModel >& xChartModel);
+
+    void setBuildIDAtImportInfo( const css::uno::Reference< css::frame::XModel >& xModel
+        , const css::uno::Reference< css::beans::XPropertySet >& xImportInfo );
+
+    enum SchXMLChartTypeEnum
+    {
+        XML_CHART_CLASS_LINE,
+        XML_CHART_CLASS_AREA,
+        XML_CHART_CLASS_CIRCLE,
+        XML_CHART_CLASS_RING,
+        XML_CHART_CLASS_SCATTER,
+        XML_CHART_CLASS_RADAR,
+        XML_CHART_CLASS_FILLED_RADAR,
+        XML_CHART_CLASS_BAR,
+        XML_CHART_CLASS_STOCK,
+        XML_CHART_CLASS_BUBBLE,
+        XML_CHART_CLASS_ADDIN,
+        XML_CHART_CLASS_UNKNOWN
+    };
+
+    SchXMLChartTypeEnum GetChartTypeEnum( std::u16string_view rClassName );
+
+    OUString GetChartTypeByClassName(
+        std::u16string_view rClassName, bool bUseOldNames );
+
+    ::xmloff::token::XMLTokenEnum getTokenByChartType(
+        const OUString & rChartTypeService, bool bUseOldNames );
+
+    OUString GetNewChartTypeName( const OUString & rOldChartTypeName );
+
+    css::uno::Reference<
+        css::chart2::data::XLabeledDataSequence2 > GetNewLabeledDataSequence();
+
+    css::uno::Reference< css::chart2::data::XDataSequence > CreateDataSequence(
+        const OUString& rRange,
+        const css::uno::Reference< css::chart2::XChartDocument >& xChartDoc );
+
+    css::uno::Reference< css::chart2::data::XDataSequence > CreateDataSequenceWithoutConvert(
+        const OUString& rRange,
+        const css::uno::Reference< css::chart2::XChartDocument >& xChartDoc );
+
+    void CreateCategories(
+        const css::uno::Reference< css::chart2::data::XDataProvider > & xDataProvider,
+        const css::uno::Reference< css::chart2::XChartDocument > & xNewDoc,
+        const OUString & rRangeAddress,
+        sal_Int32 nCooSysIndex,
+        sal_Int32 nDimensionIndex,
+        tSchXMLLSequencesPerIndex * pLSequencesPerIndex = nullptr );
+
+    css::uno::Any getPropertyFromContext( std::u16string_view rPropertyName, const XMLPropStyleContext * pPropStyleContext, const SvXMLStylesContext* pStylesCtxt );
+
+    void exportText( SvXMLExport& rExport, const OUString& rText, bool bConvertTabsLFs );
+
+    void exportRangeToSomewhere( SvXMLExport& rExport, const OUString& rValue );
+
+    /** checks if the data sequence has the property "CachedXMLRange" (true for
+        internal data sequences), and if so sets this property to the range
+        given in rXMLRange
+     */
+    void setXMLRangePropertyAtDataSequence(
+        const css::uno::Reference< css::chart2::data::XDataSequence > & xDataSequence,
+        const OUString & rXMLRange );
+
+    /** checks if the data sequence has the property "CachedXMLRange" (true for
+        internal data sequences), and if so retrieves this property and applies
+        it to the range given in rOutXMLRange.
+
+        @param bClearProp If true, the property is reset to its default after it
+                          was assigned to rOutXMLRange
+
+        @return true, if the property was found, assigned and is non-empty
+     */
+    bool getXMLRangePropertyFromDataSequence(
+        const css::uno::Reference< css::chart2::data::XDataSequence > & xDataSequence,
+        OUString & rOutXMLRange,
+        bool bClearProp );
+
+    css::uno::Reference< css::chart2::data::XDataProvider > getDataProviderFromParent( const css::uno::Reference< css::chart2::XChartDocument >& xChartDoc );
+
+    bool switchBackToDataProviderFromParent( const css::uno::Reference< css::chart2::XChartDocument >& xChartDoc
+        , const tSchXMLLSequencesPerIndex & rLSequencesPerIndex );
+
+    void copyProperties(
+        const css::uno::Reference< css::beans::XPropertySet > & xSource,
+        const css::uno::Reference< css::beans::XPropertySet > & xDestination );
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */