Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 920 insertions, 0 deletions

diff --git a/chart2/source/tools/RegressionCurveHelper.cxx b/chart2/source/tools/RegressionCurveHelper.cxx
new file mode 100644
index 000000000..60ac5ebd3
--- /dev/null
+++ b/chart2/source/tools/RegressionCurveHelper.cxx
@@ -0,0 +1,920 @@
+/* -*- 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 .
+ */
+
+#include <sal/config.h>
+
+#include <cstddef>
+
+#include <RegressionCurveHelper.hxx>
+#include <MeanValueRegressionCurveCalculator.hxx>
+#include <LinearRegressionCurveCalculator.hxx>
+#include <PolynomialRegressionCurveCalculator.hxx>
+#include <MovingAverageRegressionCurveCalculator.hxx>
+#include <LogarithmicRegressionCurveCalculator.hxx>
+#include <ExponentialRegressionCurveCalculator.hxx>
+#include <PotentialRegressionCurveCalculator.hxx>
+#include <CommonConverters.hxx>
+#include <RegressionCurveModel.hxx>
+#include <ChartTypeHelper.hxx>
+#include <ChartType.hxx>
+#include <ChartModel.hxx>
+#include <ChartModelHelper.hxx>
+#include <DataSeries.hxx>
+#include <ResId.hxx>
+#include <strings.hrc>
+#include <DiagramHelper.hxx>
+#include <com/sun/star/chart2/AxisType.hpp>
+#include <com/sun/star/chart2/XRegressionCurveCalculator.hpp>
+#include <com/sun/star/chart2/XRegressionCurveContainer.hpp>
+#include <com/sun/star/chart2/XDataSeries.hpp>
+#include <com/sun/star/chart2/data/XDataSource.hpp>
+#include <o3tl/safeint.hxx>
+#include <tools/diagnose_ex.h>
+#include <comphelper/property.hxx>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::chart2;
+
+using ::com::sun::star::uno::Reference;
+using ::com::sun::star::uno::Sequence;
+using ::com::sun::star::lang::XServiceName;
+using ::com::sun::star::beans::XPropertySet;
+using ::com::sun::star::uno::Exception;
+
+namespace
+{
+OUString lcl_getServiceNameForType(SvxChartRegress eType)
+{
+    OUString aServiceName;
+    switch( eType )
+    {
+        case SvxChartRegress::Linear:
+            aServiceName = "com.sun.star.chart2.LinearRegressionCurve";
+            break;
+        case SvxChartRegress::Log:
+            aServiceName = "com.sun.star.chart2.LogarithmicRegressionCurve";
+            break;
+        case SvxChartRegress::Exp:
+            aServiceName = "com.sun.star.chart2.ExponentialRegressionCurve";
+            break;
+        case SvxChartRegress::Power:
+            aServiceName = "com.sun.star.chart2.PotentialRegressionCurve";
+            break;
+        case SvxChartRegress::Polynomial:
+            aServiceName = "com.sun.star.chart2.PolynomialRegressionCurve";
+            break;
+        case SvxChartRegress::MovingAverage:
+            aServiceName = "com.sun.star.chart2.MovingAverageRegressionCurve";
+            break;
+        default:
+            OSL_FAIL("unknown regression curve type - use linear instead");
+            aServiceName = "com.sun.star.chart2.LinearRegressionCurve";
+            break;
+    }
+    return aServiceName;
+}
+
+} // anonymous namespace
+
+namespace chart
+{
+
+rtl::Reference< RegressionCurveModel > RegressionCurveHelper::createMeanValueLine()
+{
+    return new MeanValueRegressionCurve;
+}
+
+rtl::Reference< RegressionCurveModel > RegressionCurveHelper::createRegressionCurveByServiceName(
+    std::u16string_view aServiceName )
+{
+    rtl::Reference< RegressionCurveModel > xResult;
+
+    // todo: use factory methods with service name
+    if( aServiceName == u"com.sun.star.chart2.LinearRegressionCurve" )
+    {
+        xResult.set( new LinearRegressionCurve );
+    }
+    else if( aServiceName == u"com.sun.star.chart2.LogarithmicRegressionCurve" )
+    {
+        xResult.set( new LogarithmicRegressionCurve );
+    }
+    else if( aServiceName == u"com.sun.star.chart2.ExponentialRegressionCurve" )
+    {
+        xResult.set( new ExponentialRegressionCurve );
+    }
+    else if( aServiceName == u"com.sun.star.chart2.PotentialRegressionCurve" )
+    {
+        xResult.set( new PotentialRegressionCurve );
+    }
+    else if( aServiceName == u"com.sun.star.chart2.PolynomialRegressionCurve" )
+    {
+        xResult.set( new PolynomialRegressionCurve );
+    }
+    else if( aServiceName == u"com.sun.star.chart2.MovingAverageRegressionCurve" )
+    {
+        xResult.set( new MovingAverageRegressionCurve );
+    }
+
+    return xResult;
+}
+
+Reference< XRegressionCurveCalculator > RegressionCurveHelper::createRegressionCurveCalculatorByServiceName(
+    std::u16string_view aServiceName )
+{
+    Reference< XRegressionCurveCalculator > xResult;
+
+    // todo: use factory methods with service name
+    if( aServiceName == u"com.sun.star.chart2.MeanValueRegressionCurve" )
+    {
+        xResult.set( new MeanValueRegressionCurveCalculator() );
+    }
+    if( aServiceName == u"com.sun.star.chart2.LinearRegressionCurve" )
+    {
+        xResult.set( new LinearRegressionCurveCalculator() );
+    }
+    else if( aServiceName == u"com.sun.star.chart2.LogarithmicRegressionCurve" )
+    {
+        xResult.set( new LogarithmicRegressionCurveCalculator() );
+    }
+    else if( aServiceName == u"com.sun.star.chart2.ExponentialRegressionCurve" )
+    {
+        xResult.set( new ExponentialRegressionCurveCalculator() );
+    }
+    else if( aServiceName == u"com.sun.star.chart2.PotentialRegressionCurve" )
+    {
+        xResult.set( new PotentialRegressionCurveCalculator() );
+    }
+    else if( aServiceName == u"com.sun.star.chart2.PolynomialRegressionCurve" )
+    {
+        xResult.set( new PolynomialRegressionCurveCalculator() );
+    }
+    else if( aServiceName == u"com.sun.star.chart2.MovingAverageRegressionCurve" )
+    {
+        xResult.set( new MovingAverageRegressionCurveCalculator() );
+    }
+
+    return xResult;
+}
+
+void RegressionCurveHelper::initializeCurveCalculator(
+    const Reference< XRegressionCurveCalculator > & xOutCurveCalculator,
+    const Reference< data::XDataSource > & xSource,
+    bool bUseXValuesIfAvailable /* = true */ )
+{
+    if( ! (xOutCurveCalculator.is() &&
+           xSource.is() ))
+        return;
+
+    Sequence< double > aXValues, aYValues;
+    bool bXValuesFound = false, bYValuesFound = false;
+
+    Sequence< Reference< data::XLabeledDataSequence > > aDataSeqs( xSource->getDataSequences());
+    sal_Int32 i = 0;
+    for( i=0;
+         ! (bXValuesFound && bYValuesFound) && i<aDataSeqs.getLength();
+         ++i )
+    {
+        try
+        {
+            Reference< data::XDataSequence > xSeq( aDataSeqs[i]->getValues());
+            Reference< XPropertySet > xProp( xSeq, uno::UNO_QUERY_THROW );
+            OUString aRole;
+            if( xProp->getPropertyValue( "Role" ) >>= aRole )
+            {
+                if( bUseXValuesIfAvailable && !bXValuesFound && aRole == "values-x" )
+                {
+                    aXValues = DataSequenceToDoubleSequence( xSeq );
+                    bXValuesFound = true;
+                }
+                else if( !bYValuesFound && aRole == "values-y" )
+                {
+                    aYValues = DataSequenceToDoubleSequence( xSeq );
+                    bYValuesFound = true;
+                }
+            }
+        }
+        catch( const Exception & )
+        {
+            DBG_UNHANDLED_EXCEPTION("chart2");
+        }
+    }
+
+    if( ! bXValuesFound &&
+        bYValuesFound )
+    {
+        // initialize with 1, 2, ...
+        //first category (index 0) matches with real number 1.0
+        aXValues.realloc( aYValues.getLength());
+        auto pXValues = aXValues.getArray();
+        for( i=0; i<aXValues.getLength(); ++i )
+            pXValues[i] = i+1;
+        bXValuesFound = true;
+    }
+
+    if( bXValuesFound && bYValuesFound &&
+        aXValues.hasElements() &&
+        aYValues.hasElements() )
+        xOutCurveCalculator->recalculateRegression( aXValues, aYValues );
+}
+
+void RegressionCurveHelper::initializeCurveCalculator(
+    const Reference< XRegressionCurveCalculator > & xOutCurveCalculator,
+    const Reference< XDataSeries > & xSeries,
+    const rtl::Reference<::chart::ChartModel> & xModel )
+{
+    sal_Int32 nAxisType = ChartTypeHelper::getAxisType(
+        ChartModelHelper::getChartTypeOfSeries( xModel, xSeries ), 0 ); // x-axis
+
+    initializeCurveCalculator( xOutCurveCalculator,
+                               uno::Reference< data::XDataSource >( xSeries, uno::UNO_QUERY ),
+                               (nAxisType == AxisType::REALNUMBER) );
+}
+
+bool RegressionCurveHelper::hasMeanValueLine(
+    const uno::Reference< XRegressionCurveContainer > & xRegCnt )
+{
+    if( !xRegCnt.is())
+        return false;
+
+    try
+    {
+        const uno::Sequence< uno::Reference< XRegressionCurve > > aCurves(
+            xRegCnt->getRegressionCurves());
+        for( uno::Reference< XRegressionCurve > const & curve : aCurves )
+        {
+            if( isMeanValueLine( curve ))
+                return true;
+        }
+    }
+    catch( const Exception & )
+    {
+        DBG_UNHANDLED_EXCEPTION("chart2");
+    }
+
+    return false;
+}
+
+bool RegressionCurveHelper::hasMeanValueLine(
+    const rtl::Reference< DataSeries > & xRegCnt )
+{
+    if( !xRegCnt.is())
+        return false;
+
+    try
+    {
+        for( rtl::Reference< RegressionCurveModel > const & curve : xRegCnt->getRegressionCurves2() )
+        {
+            if( isMeanValueLine( curve ))
+                return true;
+        }
+    }
+    catch( const Exception & )
+    {
+        DBG_UNHANDLED_EXCEPTION("chart2");
+    }
+
+    return false;
+}
+
+bool RegressionCurveHelper::isMeanValueLine(
+    const uno::Reference< chart2::XRegressionCurve > & xRegCurve )
+{
+    uno::Reference< XServiceName > xServName( xRegCurve, uno::UNO_QUERY );
+    return xServName.is() &&
+        xServName->getServiceName() ==
+            "com.sun.star.chart2.MeanValueRegressionCurve";
+}
+
+bool RegressionCurveHelper::isMeanValueLine(
+    const rtl::Reference< RegressionCurveModel > & xRegCurve )
+{
+    return xRegCurve.is() &&
+        xRegCurve->getServiceName() ==
+            "com.sun.star.chart2.MeanValueRegressionCurve";
+}
+
+rtl::Reference< RegressionCurveModel >
+    RegressionCurveHelper::getMeanValueLine(
+        const uno::Reference< chart2::XRegressionCurveContainer > & xRegCnt )
+{
+    if( xRegCnt.is())
+    {
+        try
+        {
+            const uno::Sequence< uno::Reference< XRegressionCurve > > aCurves(
+                xRegCnt->getRegressionCurves());
+            for( uno::Reference< XRegressionCurve > const & curve : aCurves )
+            {
+                if( isMeanValueLine( curve ))
+                    return dynamic_cast<RegressionCurveModel*>(curve.get());
+            }
+        }
+        catch( const Exception & )
+        {
+            DBG_UNHANDLED_EXCEPTION("chart2");
+        }
+    }
+
+    return nullptr;
+}
+
+rtl::Reference< RegressionCurveModel >
+    RegressionCurveHelper::getMeanValueLine(
+        const rtl::Reference< DataSeries > & xRegCnt )
+{
+    if( xRegCnt.is())
+    {
+        try
+        {
+            for( rtl::Reference< RegressionCurveModel > const & curve : xRegCnt->getRegressionCurves2() )
+            {
+                if( isMeanValueLine( curve ))
+                    return curve;
+            }
+        }
+        catch( const Exception & )
+        {
+            DBG_UNHANDLED_EXCEPTION("chart2");
+        }
+    }
+
+    return nullptr;
+}
+
+void RegressionCurveHelper::addMeanValueLine(
+    uno::Reference< XRegressionCurveContainer > const & xRegCnt,
+    const uno::Reference< XPropertySet > & xSeriesProp )
+{
+    if( !xRegCnt.is() ||
+        ::chart::RegressionCurveHelper::hasMeanValueLine( xRegCnt ) )
+        return;
+
+    // todo: use a valid context
+    uno::Reference< XRegressionCurve > xCurve( createMeanValueLine() );
+    xRegCnt->addRegressionCurve( xCurve );
+
+    if( xSeriesProp.is())
+    {
+        uno::Reference< XPropertySet > xProp( xCurve, uno::UNO_QUERY );
+        if( xProp.is())
+        {
+            xProp->setPropertyValue( "LineColor",
+                                     xSeriesProp->getPropertyValue( "Color"));
+        }
+    }
+}
+
+void RegressionCurveHelper::addMeanValueLine(
+    rtl::Reference< DataSeries > const & xRegCnt,
+    const uno::Reference< XPropertySet > & xSeriesProp )
+{
+    if( !xRegCnt.is() ||
+        ::chart::RegressionCurveHelper::hasMeanValueLine( xRegCnt ) )
+        return;
+
+    // todo: use a valid context
+    rtl::Reference< RegressionCurveModel > xCurve( createMeanValueLine() );
+    xRegCnt->addRegressionCurve( xCurve );
+
+    if( xSeriesProp.is())
+    {
+        xCurve->setPropertyValue( "LineColor",
+                                 xSeriesProp->getPropertyValue( "Color"));
+    }
+}
+
+void RegressionCurveHelper::removeMeanValueLine(
+    Reference< XRegressionCurveContainer > const & xRegCnt )
+{
+    if( !xRegCnt.is())
+        return;
+
+    try
+    {
+        const Sequence< Reference< XRegressionCurve > > aCurves(
+            xRegCnt->getRegressionCurves());
+        for( Reference< XRegressionCurve > const & curve : aCurves )
+        {
+            if( isMeanValueLine( curve ))
+            {
+                xRegCnt->removeRegressionCurve( curve );
+                // attention: the iterator i has become invalid now
+
+                // note: assume that there is only one mean-value curve
+                // to remove multiple mean-value curves remove the break
+                break;
+            }
+        }
+    }
+    catch( const Exception & )
+    {
+        DBG_UNHANDLED_EXCEPTION("chart2");
+    }
+}
+
+void RegressionCurveHelper::removeMeanValueLine(
+    rtl::Reference< DataSeries > const & xRegCnt )
+{
+    if( !xRegCnt.is())
+        return;
+
+    try
+    {
+        for( rtl::Reference< RegressionCurveModel > const & curve : xRegCnt->getRegressionCurves2() )
+        {
+            if( isMeanValueLine( curve ))
+            {
+                xRegCnt->removeRegressionCurve( curve );
+                // attention: the iterator i has become invalid now
+
+                // note: assume that there is only one mean-value curve
+                // to remove multiple mean-value curves remove the break
+                break;
+            }
+        }
+    }
+    catch( const Exception & )
+    {
+        DBG_UNHANDLED_EXCEPTION("chart2");
+    }
+}
+
+rtl::Reference< RegressionCurveModel > RegressionCurveHelper::addRegressionCurve(
+    SvxChartRegress eType,
+    uno::Reference< XRegressionCurveContainer > const & xRegressionCurveContainer,
+    const uno::Reference< beans::XPropertySet >& xPropertySource,
+    const uno::Reference< beans::XPropertySet >& xEquationProperties )
+{
+    rtl::Reference< RegressionCurveModel > xCurve;
+
+    if( !xRegressionCurveContainer.is() )
+        return xCurve;
+
+    if( eType == SvxChartRegress::NONE )
+    {
+        OSL_FAIL("don't create a regression curve of type none");
+        return xCurve;
+    }
+
+    OUString aServiceName( lcl_getServiceNameForType( eType ));
+    if( !aServiceName.isEmpty())
+    {
+        // todo: use a valid context
+        xCurve = createRegressionCurveByServiceName( aServiceName );
+
+        if( xEquationProperties.is())
+            xCurve->setEquationProperties( xEquationProperties );
+
+        if( xPropertySource.is())
+            comphelper::copyProperties( xPropertySource, xCurve );
+        else
+        {
+            uno::Reference< XPropertySet > xSeriesProp( xRegressionCurveContainer, uno::UNO_QUERY );
+            if( xSeriesProp.is())
+            {
+                xCurve->setPropertyValue( "LineColor",
+                                         xSeriesProp->getPropertyValue( "Color"));
+            }
+        }
+    }
+    xRegressionCurveContainer->addRegressionCurve( xCurve );
+
+    return xCurve;
+}
+
+rtl::Reference< RegressionCurveModel > RegressionCurveHelper::addRegressionCurve(
+    SvxChartRegress eType,
+    rtl::Reference< DataSeries > const & xRegressionCurveContainer,
+    const uno::Reference< beans::XPropertySet >& xPropertySource,
+    const uno::Reference< beans::XPropertySet >& xEquationProperties )
+{
+    rtl::Reference< RegressionCurveModel > xCurve;
+
+    if( !xRegressionCurveContainer.is() )
+        return xCurve;
+
+    if( eType == SvxChartRegress::NONE )
+    {
+        OSL_FAIL("don't create a regression curve of type none");
+        return xCurve;
+    }
+
+    OUString aServiceName( lcl_getServiceNameForType( eType ));
+    if( !aServiceName.isEmpty())
+    {
+        // todo: use a valid context
+        xCurve = createRegressionCurveByServiceName( aServiceName );
+
+        if( xEquationProperties.is())
+            xCurve->setEquationProperties( xEquationProperties );
+
+        if( xPropertySource.is())
+            comphelper::copyProperties( xPropertySource, xCurve );
+        else
+        {
+            xCurve->setPropertyValue( "LineColor",
+                                     xRegressionCurveContainer->getPropertyValue( "Color"));
+        }
+    }
+    xRegressionCurveContainer->addRegressionCurve( xCurve );
+
+    return xCurve;
+}
+
+/** removes all regression curves that are not of type mean value
+    and returns true, if anything was removed
+ */
+bool RegressionCurveHelper::removeAllExceptMeanValueLine(
+    rtl::Reference< DataSeries > const & xRegCnt )
+{
+    if( !xRegCnt.is())
+        return false;
+
+    bool bRemovedSomething = false;
+    try
+    {
+        std::vector< rtl::Reference< RegressionCurveModel > > aCurvesToDelete;
+        for( rtl::Reference< RegressionCurveModel > const & curve : xRegCnt->getRegressionCurves2() )
+        {
+            if( ! isMeanValueLine( curve ))
+            {
+                aCurvesToDelete.push_back( curve );
+            }
+        }
+
+        for (auto const& curveToDelete : aCurvesToDelete)
+        {
+            xRegCnt->removeRegressionCurve(curveToDelete);
+            bRemovedSomething = true;
+        }
+    }
+    catch( const uno::Exception & )
+    {
+        DBG_UNHANDLED_EXCEPTION("chart2");
+    }
+    return bRemovedSomething;
+}
+
+void RegressionCurveHelper::removeEquations(
+        rtl::Reference< DataSeries > const & xRegCnt )
+{
+    if( !xRegCnt.is())
+        return;
+
+    try
+    {
+        for( rtl::Reference< RegressionCurveModel >  const & curve : xRegCnt->getRegressionCurves2() )
+        {
+            if( !isMeanValueLine( curve ) )
+            {
+                uno::Reference< beans::XPropertySet > xEqProp( curve->getEquationProperties() ) ;
+                if( xEqProp.is())
+                {
+                    xEqProp->setPropertyValue( "ShowEquation", uno::Any( false ));
+                    xEqProp->setPropertyValue( "XName", uno::Any( OUString("x") ));
+                    xEqProp->setPropertyValue( "YName", uno::Any( OUString("f(x) ") ));
+                    xEqProp->setPropertyValue( "ShowCorrelationCoefficient", uno::Any( false ));
+                }
+            }
+        }
+    }
+    catch( const uno::Exception & )
+    {
+        DBG_UNHANDLED_EXCEPTION("chart2");
+    }
+}
+
+rtl::Reference< RegressionCurveModel > RegressionCurveHelper::changeRegressionCurveType(
+    SvxChartRegress eType,
+    uno::Reference< XRegressionCurveContainer > const & xRegressionCurveContainer,
+    uno::Reference< XRegressionCurve > const & xRegressionCurve )
+{
+    xRegressionCurveContainer->removeRegressionCurve( xRegressionCurve );
+    return RegressionCurveHelper::addRegressionCurve(
+            eType,
+            xRegressionCurveContainer,
+            uno::Reference< beans::XPropertySet >( xRegressionCurve, uno::UNO_QUERY ),
+            xRegressionCurve->getEquationProperties());
+}
+
+rtl::Reference< RegressionCurveModel > RegressionCurveHelper::getFirstCurveNotMeanValueLine(
+    const Reference< XRegressionCurveContainer > & xRegCnt )
+{
+    if( !xRegCnt.is())
+        return nullptr;
+
+    try
+    {
+        const uno::Sequence< uno::Reference< chart2::XRegressionCurve > > aCurves(
+            xRegCnt->getRegressionCurves());
+        for( uno::Reference< chart2::XRegressionCurve > const & curve : aCurves )
+        {
+            if( ! isMeanValueLine( curve ))
+            {
+                return dynamic_cast<RegressionCurveModel*>(curve.get());
+            }
+        }
+    }
+    catch( const Exception & )
+    {
+        DBG_UNHANDLED_EXCEPTION("chart2");
+    }
+
+    return nullptr;
+}
+
+rtl::Reference< RegressionCurveModel > RegressionCurveHelper::getFirstCurveNotMeanValueLine(
+    const rtl::Reference< DataSeries > & xRegCnt )
+{
+    if( !xRegCnt.is())
+        return nullptr;
+
+    try
+    {
+        for( rtl::Reference< RegressionCurveModel > const & curve : xRegCnt->getRegressionCurves2() )
+        {
+            if( ! isMeanValueLine( curve ))
+            {
+                return curve;
+            }
+        }
+    }
+    catch( const Exception & )
+    {
+        DBG_UNHANDLED_EXCEPTION("chart2");
+    }
+
+    return nullptr;
+}
+
+rtl::Reference< RegressionCurveModel > RegressionCurveHelper::getRegressionCurveAtIndex(
+    const rtl::Reference< DataSeries >& xCurveContainer,
+    sal_Int32 aIndex )
+{
+    if( !xCurveContainer.is())
+        return nullptr;
+
+    try
+    {
+        const std::vector< rtl::Reference< RegressionCurveModel > > aCurves(xCurveContainer->getRegressionCurves2());
+        if(0 <= aIndex && o3tl::make_unsigned(aIndex) < aCurves.size())
+        {
+            if(!isMeanValueLine(aCurves[aIndex]))
+                return aCurves[aIndex];
+        }
+    }
+    catch( const Exception & )
+    {
+        DBG_UNHANDLED_EXCEPTION("chart2");
+    }
+
+    return nullptr;
+}
+
+SvxChartRegress RegressionCurveHelper::getRegressionType(
+    const Reference< XRegressionCurve > & xCurve )
+{
+    SvxChartRegress eResult = SvxChartRegress::Unknown;
+
+    try
+    {
+        Reference< lang::XServiceName > xServName( xCurve, uno::UNO_QUERY );
+        if( xServName.is())
+        {
+            OUString aServiceName( xServName->getServiceName() );
+
+            if( aServiceName == "com.sun.star.chart2.LinearRegressionCurve" )
+            {
+                eResult = SvxChartRegress::Linear;
+            }
+            else if( aServiceName == "com.sun.star.chart2.LogarithmicRegressionCurve" )
+            {
+                eResult = SvxChartRegress::Log;
+            }
+            else if( aServiceName == "com.sun.star.chart2.ExponentialRegressionCurve" )
+            {
+                eResult = SvxChartRegress::Exp;
+            }
+            else if( aServiceName == "com.sun.star.chart2.PotentialRegressionCurve" )
+            {
+                eResult = SvxChartRegress::Power;
+            }
+            else if( aServiceName == "com.sun.star.chart2.MeanValueRegressionCurve" )
+            {
+                eResult = SvxChartRegress::MeanValue;
+            }
+            else if( aServiceName == "com.sun.star.chart2.PolynomialRegressionCurve" )
+            {
+                eResult = SvxChartRegress::Polynomial;
+            }
+            else if( aServiceName == "com.sun.star.chart2.MovingAverageRegressionCurve" )
+            {
+                eResult = SvxChartRegress::MovingAverage;
+            }
+        }
+    }
+    catch( const Exception & )
+    {
+        DBG_UNHANDLED_EXCEPTION("chart2" );
+    }
+
+    return eResult;
+}
+
+SvxChartRegress RegressionCurveHelper::getFirstRegressTypeNotMeanValueLine(
+    const Reference< XRegressionCurveContainer > & xRegCnt )
+{
+    SvxChartRegress eResult = SvxChartRegress::NONE;
+
+    if( xRegCnt.is())
+    {
+        const Sequence< Reference< XRegressionCurve > > aCurves(
+            xRegCnt->getRegressionCurves());
+        for( Reference< XRegressionCurve > const & curve : aCurves )
+        {
+            SvxChartRegress eType = getRegressionType( curve );
+            if( eType != SvxChartRegress::MeanValue &&
+                eType != SvxChartRegress::Unknown )
+            {
+                eResult = eType;
+                break;
+            }
+        }
+    }
+
+    return eResult;
+}
+
+OUString RegressionCurveHelper::getUINameForRegressionCurve( const Reference< XRegressionCurve >& xRegressionCurve )
+{
+    OUString aResult = getRegressionCurveSpecificName(xRegressionCurve);
+    if (aResult.isEmpty())
+    {
+        aResult = getRegressionCurveGenericName(xRegressionCurve);
+        if (!aResult.isEmpty())
+        {
+            aResult += " (%SERIESNAME)";
+        }
+    }
+    return aResult;
+}
+
+OUString RegressionCurveHelper::getRegressionCurveGenericName(const Reference< XRegressionCurve >& xRegressionCurve)
+{
+    OUString aResult;
+    if(!xRegressionCurve.is())
+        return aResult;
+
+    Reference< lang::XServiceName > xServiceName( xRegressionCurve, uno::UNO_QUERY );
+    if(!xServiceName.is())
+        return aResult;
+
+    OUString aServiceName(xServiceName->getServiceName());
+
+    if( aServiceName == "com.sun.star.chart2.MeanValueRegressionCurve" )
+    {
+        aResult = SchResId(STR_REGRESSION_MEAN);
+    }
+    else if( aServiceName == "com.sun.star.chart2.LinearRegressionCurve" )
+    {
+        aResult = SchResId(STR_REGRESSION_LINEAR);
+    }
+    else if( aServiceName == "com.sun.star.chart2.LogarithmicRegressionCurve" )
+    {
+        aResult = SchResId(STR_REGRESSION_LOG);
+    }
+    else if( aServiceName == "com.sun.star.chart2.ExponentialRegressionCurve" )
+    {
+        aResult = SchResId(STR_REGRESSION_EXP);
+    }
+    else if( aServiceName == "com.sun.star.chart2.PotentialRegressionCurve" )
+    {
+        aResult = SchResId(STR_REGRESSION_POWER);
+    }
+    else if( aServiceName == "com.sun.star.chart2.PolynomialRegressionCurve" )
+    {
+        aResult = SchResId(STR_REGRESSION_POLYNOMIAL);
+    }
+    else if( aServiceName == "com.sun.star.chart2.MovingAverageRegressionCurve" )
+    {
+        aResult = SchResId(STR_REGRESSION_MOVING_AVERAGE);
+    }
+    return aResult;
+}
+
+OUString RegressionCurveHelper::getRegressionCurveSpecificName(const Reference< XRegressionCurve >& xRegressionCurve)
+{
+    OUString aResult;
+
+    if(!xRegressionCurve.is())
+        return aResult;
+
+    Reference<XPropertySet> xProperties( xRegressionCurve, uno::UNO_QUERY );
+    if(!xProperties.is())
+        return aResult;
+
+    xProperties->getPropertyValue("CurveName") >>= aResult;
+
+    return aResult;
+}
+
+OUString RegressionCurveHelper::getRegressionCurveName( const Reference< XRegressionCurve >& xRegressionCurve )
+{
+    OUString aResult = getRegressionCurveSpecificName(xRegressionCurve);
+    if (aResult.isEmpty())
+        return getRegressionCurveGenericName(xRegressionCurve);
+    return aResult;
+}
+
+std::vector< rtl::Reference< RegressionCurveModel > >
+    RegressionCurveHelper::getAllRegressionCurvesNotMeanValueLine(
+        const rtl::Reference< Diagram > & xDiagram )
+{
+    std::vector< rtl::Reference< RegressionCurveModel > > aResult;
+    std::vector< rtl::Reference< DataSeries > > aSeries( DiagramHelper::getDataSeriesFromDiagram( xDiagram ));
+    for (auto const& elem : aSeries)
+    {
+        for( rtl::Reference< RegressionCurveModel > const & curve : elem->getRegressionCurves2() )
+        {
+            if( ! isMeanValueLine( curve ))
+                aResult.push_back( curve );
+        }
+    }
+
+    return aResult;
+}
+
+void RegressionCurveHelper::resetEquationPosition(
+    const Reference< chart2::XRegressionCurve > & xCurve )
+{
+    if( !xCurve.is())
+        return;
+
+    try
+    {
+        static const OUStringLiteral aPosPropertyName( u"RelativePosition" );
+        Reference< beans::XPropertySet > xEqProp( xCurve->getEquationProperties()); // since m233: , uno::UNO_SET_THROW );
+        if( xEqProp->getPropertyValue( aPosPropertyName ).hasValue())
+            xEqProp->setPropertyValue( aPosPropertyName, uno::Any());
+    }
+    catch( const uno::Exception & )
+    {
+        DBG_UNHANDLED_EXCEPTION("chart2" );
+    }
+}
+
+sal_Int32 RegressionCurveHelper::getRegressionCurveIndex(
+    const rtl::Reference< DataSeries >& xContainer,
+    const rtl::Reference< RegressionCurveModel >& xCurve )
+{
+    if( xContainer.is())
+    {
+        const std::vector< rtl::Reference< RegressionCurveModel > > & aCurves(
+            xContainer->getRegressionCurves2());
+
+        for( std::size_t i = 0; i < aCurves.size(); ++i )
+        {
+            if( xCurve == aCurves[i] )
+                return i;
+        }
+    }
+    return -1;
+}
+
+bool RegressionCurveHelper::hasEquation( const Reference< chart2::XRegressionCurve > & xCurve )
+{
+    bool bHasEquation = false;
+    if( xCurve.is())
+    {
+        uno::Reference< beans::XPropertySet > xEquationProp( xCurve->getEquationProperties());
+        if( xEquationProp.is())
+        {
+            bool bShowEquation = false;
+            bool bShowCoefficient = false;
+            xEquationProp->getPropertyValue( "ShowEquation") >>= bShowEquation;
+            xEquationProp->getPropertyValue( "ShowCorrelationCoefficient") >>= bShowCoefficient;
+            bHasEquation = bShowEquation || bShowCoefficient;
+        }
+    }
+    return bHasEquation;
+}
+
+} //namespace chart
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */