/* -*- 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 <DataSeries.hxx>

#include <DataSeriesProperties.hxx>

#include "DataPointProperties.hxx"

#include <CharacterProperties.hxx>

#include <UserDefinedProperties.hxx>

#include "DataPoint.hxx"

#include <DataSeriesHelper.hxx>

#include <CloneHelper.hxx>

#include <RegressionCurveModel.hxx>

#include <ModifyListenerHelper.hxx>

#include <unonames.hxx>

#include <com/sun/star/chart2/DataPointLabel.hpp>

#include <com/sun/star/chart2/Symbol.hpp>

#include <com/sun/star/chart2/data/XTextualDataSequence.hpp>

#include <com/sun/star/container/NoSuchElementException.hpp>

#include <com/sun/star/drawing/LineStyle.hpp>

#include <com/sun/star/lang/IndexOutOfBoundsException.hpp>

#include <cppuhelper/supportsservice.hxx>

#include <comphelper/diagnose_ex.hxx>

#include <rtl/ref.hxx>

#include <rtl/ustrbuf.hxx>

#include <algorithm>

namespace com::sun::star::uno { class XComponentContext; }

using namespace ::com::sun::star;

using ::com::sun::star::beans::Property;

using ::com::sun::star::uno::Sequence;

using ::com::sun::star::uno::Reference;

using ::osl::MutexGuard;

namespace chart

{

const ::chart::tPropertyValueMap & StaticDataSeriesDefaults()

{

    static const ::chart::tPropertyValueMap aStaticDefaults = []()

        {

            ::chart::tPropertyValueMap aMap;

            ::chart::DataSeriesProperties::AddDefaultsToMap( aMap );

            ::chart::CharacterProperties::AddDefaultsToMap( aMap );

            float fDefaultCharHeight = 10.0;

            ::chart::PropertyHelper::setPropertyValue( aMap, ::chart::CharacterProperties::PROP_CHAR_CHAR_HEIGHT, fDefaultCharHeight );

            ::chart::PropertyHelper::setPropertyValue( aMap, ::chart::CharacterProperties::PROP_CHAR_ASIAN_CHAR_HEIGHT, fDefaultCharHeight );

            ::chart::PropertyHelper::setPropertyValue( aMap, ::chart::CharacterProperties::PROP_CHAR_COMPLEX_CHAR_HEIGHT, fDefaultCharHeight );

            return aMap;

        }();

    return aStaticDefaults;

};

} // namespace chart

namespace

{

::cppu::OPropertyArrayHelper& StaticDataSeriesInfoHelper()

{

    static ::cppu::OPropertyArrayHelper oHelper = []()

        {

            std::vector< css::beans::Property > aProperties;

            ::chart::DataSeriesProperties::AddPropertiesToVector( aProperties );

            ::chart::CharacterProperties::AddPropertiesToVector( aProperties );

            ::chart::UserDefinedProperties::AddPropertiesToVector( aProperties );

            std::sort( aProperties.begin(), aProperties.end(),

                         ::chart::PropertyNameLess() );

            return comphelper::containerToSequence( aProperties );

        }();

    return oHelper;

};

void lcl_SetParent(

    const uno::Reference< uno::XInterface > & xChildInterface,

    const uno::Reference< uno::XInterface > & xParentInterface )

{

    uno::Reference< container::XChild > xChild( xChildInterface, uno::UNO_QUERY );

    if( xChild.is())

        xChild->setParent( xParentInterface );

}

typedef std::map< sal_Int32, css::uno::Reference< css::beans::XPropertySet > >

    lcl_tDataPointMap;

void lcl_CloneAttributedDataPoints(

    const lcl_tDataPointMap & rSource, lcl_tDataPointMap & rDestination,

    const uno::Reference< uno::XInterface > & xSeries )

{

    for (auto const& elem : rSource)

    {

        Reference< beans::XPropertySet > xPoint( elem.second );

        if( xPoint.is())

        {

            Reference< util::XCloneable > xCloneable( xPoint, uno::UNO_QUERY );

            if( xCloneable.is())

            {

                xPoint.set( xCloneable->createClone(), uno::UNO_QUERY );

                if( xPoint.is())

                {

                    lcl_SetParent( xPoint, xSeries );

                    rDestination.emplace( elem.first, xPoint );

                }

            }

        }

    }

}

} // anonymous namespace

namespace chart

{

DataSeries::DataSeries() :

        m_xModifyEventForwarder( new ModifyEventForwarder() )

{

}

DataSeries::DataSeries( const DataSeries & rOther ) :

        impl::DataSeries_Base(rOther),

        ::property::OPropertySet( rOther ),

    m_xModifyEventForwarder( new ModifyEventForwarder() )

{

    if( ! rOther.m_aDataSequences.empty())

    {

        CloneHelper::CloneRefVector(rOther.m_aDataSequences, m_aDataSequences );

        ModifyListenerHelper::addListenerToAllElements( m_aDataSequences, m_xModifyEventForwarder );

    }

    CloneHelper::CloneRefVector( rOther.m_aRegressionCurves, m_aRegressionCurves );

    ModifyListenerHelper::addListenerToAllElements( m_aRegressionCurves, m_xModifyEventForwarder );

    // add as listener to XPropertySet properties

    Reference< beans::XPropertySet > xPropertySet;

    uno::Any aValue;

    getFastPropertyValue( aValue, DataPointProperties::PROP_DATAPOINT_ERROR_BAR_X );

    if( ( aValue >>= xPropertySet )

        && xPropertySet.is())

        ModifyListenerHelper::addListener( xPropertySet, m_xModifyEventForwarder );

    getFastPropertyValue( aValue, DataPointProperties::PROP_DATAPOINT_ERROR_BAR_Y );

    if( ( aValue >>= xPropertySet )

        && xPropertySet.is())

        ModifyListenerHelper::addListener( xPropertySet, m_xModifyEventForwarder );

}

// late initialization to call after copy-constructing

void DataSeries::Init( const DataSeries & rOther )

{

    Reference< uno::XInterface > xThisInterface( static_cast< ::cppu::OWeakObject * >( this ));

    if( ! rOther.m_aAttributedDataPoints.empty())

    {

        lcl_CloneAttributedDataPoints(

            rOther.m_aAttributedDataPoints, m_aAttributedDataPoints, xThisInterface );

        ModifyListenerHelper::addListenerToAllMapElements( m_aAttributedDataPoints, m_xModifyEventForwarder );

    }

    // add as parent to error bars

    Reference< beans::XPropertySet > xPropertySet;

    uno::Any aValue;

    getFastPropertyValue( aValue, DataPointProperties::PROP_DATAPOINT_ERROR_BAR_X );

    if( ( aValue >>= xPropertySet )

        && xPropertySet.is())

        lcl_SetParent( xPropertySet, xThisInterface );

    getFastPropertyValue( aValue, DataPointProperties::PROP_DATAPOINT_ERROR_BAR_Y );

    if( ( aValue >>= xPropertySet )

        && xPropertySet.is())

        lcl_SetParent( xPropertySet, xThisInterface );

}

DataSeries::~DataSeries()

{

    try

    {

        ModifyListenerHelper::removeListenerFromAllMapElements( m_aAttributedDataPoints, m_xModifyEventForwarder );

        ModifyListenerHelper::removeListenerFromAllElements( m_aRegressionCurves, m_xModifyEventForwarder );

        ModifyListenerHelper::removeListenerFromAllElements( m_aDataSequences, m_xModifyEventForwarder );

        // remove listener from XPropertySet properties

        Reference< beans::XPropertySet > xPropertySet;

        uno::Any aValue;

        getFastPropertyValue( aValue, DataPointProperties::PROP_DATAPOINT_ERROR_BAR_X );

        if( ( aValue >>= xPropertySet )

            && xPropertySet.is())

            ModifyListenerHelper::removeListener( xPropertySet, m_xModifyEventForwarder );

        getFastPropertyValue( aValue, DataPointProperties::PROP_DATAPOINT_ERROR_BAR_Y );

        if( ( aValue >>= xPropertySet )

            && xPropertySet.is())

            ModifyListenerHelper::removeListener( xPropertySet, m_xModifyEventForwarder );

    }

    catch( const uno::Exception & )

    {

        DBG_UNHANDLED_EXCEPTION("chart2");

    }

}

// ____ XCloneable ____

uno::Reference< util::XCloneable > SAL_CALL DataSeries::createClone()

{

    rtl::Reference<DataSeries> pNewSeries( new DataSeries( *this ));

    // do initialization that uses uno references to the clone

    pNewSeries->Init( *this );

    return pNewSeries;

}

// ____ OPropertySet ____

void DataSeries::GetDefaultValue( sal_Int32 nHandle, uno::Any& rDest ) const

{

    const tPropertyValueMap& rStaticDefaults = StaticDataSeriesDefaults();

    tPropertyValueMap::const_iterator aFound( rStaticDefaults.find( nHandle ) );

    if( aFound == rStaticDefaults.end() )

        rDest.clear();

    else

        rDest = (*aFound).second;

}

// ____ OPropertySet ____

::cppu::IPropertyArrayHelper & SAL_CALL DataSeries::getInfoHelper()

{

    return StaticDataSeriesInfoHelper();

}

// ____ XPropertySet ____

uno::Reference< beans::XPropertySetInfo > SAL_CALL DataSeries::getPropertySetInfo()

{

    static uno::Reference< beans::XPropertySetInfo > xPropSetInfo =

        ::cppu::OPropertySetHelper::createPropertySetInfo(StaticDataSeriesInfoHelper() );

    return xPropSetInfo;

}

void SAL_CALL DataSeries::getFastPropertyValue

    ( uno::Any& rValue,

      sal_Int32 nHandle ) const

{

    // special handling for get.  set is not possible for this property

    if( nHandle == DataSeriesProperties::PROP_DATASERIES_ATTRIBUTED_DATA_POINTS )

    {

        // TODO: only add those property sets that are really modified

        rValue <<= comphelper::mapKeysToSequence(m_aAttributedDataPoints);

    }

    else

        OPropertySet::getFastPropertyValue( rValue, nHandle );

}

void SAL_CALL DataSeries::setFastPropertyValue_NoBroadcast(

    sal_Int32 nHandle, const uno::Any& rValue )

{

    if(    nHandle == DataPointProperties::PROP_DATAPOINT_ERROR_BAR_Y

        || nHandle == DataPointProperties::PROP_DATAPOINT_ERROR_BAR_X )

    {

        uno::Any aOldValue;

        Reference< util::XModifyBroadcaster > xBroadcaster;

        getFastPropertyValue( aOldValue, nHandle );

        if( aOldValue.hasValue() &&

            (aOldValue >>= xBroadcaster) &&

            xBroadcaster.is())

        {

            ModifyListenerHelper::removeListener( xBroadcaster, m_xModifyEventForwarder );

        }

        OSL_ASSERT( rValue.getValueTypeClass() == uno::TypeClass_INTERFACE );

        if( rValue.hasValue() &&

            (rValue >>= xBroadcaster) &&

            xBroadcaster.is())

        {

            ModifyListenerHelper::addListener( xBroadcaster, m_xModifyEventForwarder );

        }

    }

    ::property::OPropertySet::setFastPropertyValue_NoBroadcast( nHandle, rValue );

}

Reference< beans::XPropertySet >

    SAL_CALL DataSeries::getDataPointByIndex( sal_Int32 nIndex )

{

    Reference< beans::XPropertySet > xResult;

    std::vector< uno::Reference< chart2::data::XLabeledDataSequence > > aSequences;

    {

        MutexGuard aGuard( m_aMutex );

        aSequences = m_aDataSequences;

    }

    std::vector< uno::Reference< chart2::data::XLabeledDataSequence > > aValuesSeries(

        DataSeriesHelper::getAllDataSequencesByRole( aSequences , u"values"_ustr ) );

    if (aValuesSeries.empty())

        throw lang::IndexOutOfBoundsException();

    Reference< chart2::data::XDataSequence > xSeq( aValuesSeries.front()->getValues() );

    if( 0 <= nIndex && nIndex < xSeq->getData().getLength() )

    {

        {

            MutexGuard aGuard( m_aMutex );

            tDataPointAttributeContainer::iterator aIt( m_aAttributedDataPoints.find( nIndex ) );

            if( aIt != m_aAttributedDataPoints.end() )

                xResult = (*aIt).second;

        }

        if( !xResult.is() )

        {

            Reference< beans::XPropertySet > xParentProperties;

            rtl::Reference< ModifyEventForwarder > xModifyEventForwarder;

            {

                MutexGuard aGuard( m_aMutex );

                xParentProperties = this;

                xModifyEventForwarder = m_xModifyEventForwarder;

            }

            // create a new XPropertySet for this data point

            xResult.set( new DataPoint( xParentProperties ) );

            {

                MutexGuard aGuard( m_aMutex );

                m_aAttributedDataPoints[ nIndex ] = xResult;

            }

            ModifyListenerHelper::addListener( xResult, xModifyEventForwarder );

        }

    }

    return xResult;

}

void SAL_CALL DataSeries::resetDataPoint( sal_Int32 nIndex )

{

    Reference< beans::XPropertySet > xDataPointProp;

    rtl::Reference< ModifyEventForwarder > xModifyEventForwarder;

    {

        MutexGuard aGuard( m_aMutex );

        xModifyEventForwarder = m_xModifyEventForwarder;

        tDataPointAttributeContainer::iterator aIt( m_aAttributedDataPoints.find( nIndex ));

        if( aIt != m_aAttributedDataPoints.end())

        {

            xDataPointProp = (*aIt).second;

            m_aAttributedDataPoints.erase(aIt);

        }

    }

    if( xDataPointProp.is() )

    {

        Reference< util::XModifyBroadcaster > xBroadcaster( xDataPointProp, uno::UNO_QUERY );

        if( xBroadcaster.is() && xModifyEventForwarder.is())

            xBroadcaster->removeModifyListener( xModifyEventForwarder );

        fireModifyEvent();

    }

}

void SAL_CALL DataSeries::resetAllDataPoints()

{

    tDataPointAttributeContainer  aOldAttributedDataPoints;

    rtl::Reference< ModifyEventForwarder > xModifyEventForwarder;

    {

        MutexGuard aGuard( m_aMutex );

        xModifyEventForwarder = m_xModifyEventForwarder;

        std::swap( aOldAttributedDataPoints, m_aAttributedDataPoints );

    }

    ModifyListenerHelper::removeListenerFromAllMapElements( aOldAttributedDataPoints, xModifyEventForwarder );

    aOldAttributedDataPoints.clear();

    fireModifyEvent();

}

// ____ XDataSink ____

void SAL_CALL DataSeries::setData( const uno::Sequence< Reference< chart2::data::XLabeledDataSequence > >& aData )

{

    tDataSequenceContainer aOldDataSequences;

    tDataSequenceContainer aNewDataSequences;

    rtl::Reference< ModifyEventForwarder > xModifyEventForwarder;

    {

        MutexGuard aGuard( m_aMutex );

        xModifyEventForwarder = m_xModifyEventForwarder;

        std::swap( aOldDataSequences, m_aDataSequences );

        for (const auto & i : aData)

        {

            aNewDataSequences.push_back(i);

        }

        m_aDataSequences = aNewDataSequences;

    }

    ModifyListenerHelper::removeListenerFromAllElements( aOldDataSequences, xModifyEventForwarder );

    ModifyListenerHelper::addListenerToAllElements( aNewDataSequences, xModifyEventForwarder );

    fireModifyEvent();

}

void DataSeries::setData( const std::vector< uno::Reference< chart2::data::XLabeledDataSequence > >& aData )

{

    tDataSequenceContainer aOldDataSequences;

    tDataSequenceContainer aNewDataSequences;

    rtl::Reference< ModifyEventForwarder > xModifyEventForwarder;

    {

        MutexGuard aGuard( m_aMutex );

        xModifyEventForwarder = m_xModifyEventForwarder;

        std::swap( aOldDataSequences, m_aDataSequences );

        aNewDataSequences = aData;

        m_aDataSequences = aNewDataSequences;

    }

    ModifyListenerHelper::removeListenerFromAllElements( aOldDataSequences, xModifyEventForwarder );

    ModifyListenerHelper::addListenerToAllElements( aNewDataSequences, xModifyEventForwarder );

    fireModifyEvent();

}

void DataSeries::addDataSequence(css::uno::Reference<css::chart2::data::XLabeledDataSequence> const& rSequence)

{

    m_aDataSequences.push_back(rSequence);

}

// ____ XDataSource ____

Sequence< Reference< chart2::data::XLabeledDataSequence > > SAL_CALL DataSeries::getDataSequences()

{

    MutexGuard aGuard( m_aMutex );

    return comphelper::containerToSequence<Reference< chart2::data::XLabeledDataSequence >>( m_aDataSequences );

}

// ____ XRegressionCurveContainer ____

void SAL_CALL DataSeries::addRegressionCurve(

    const uno::Reference< chart2::XRegressionCurve >& xRegressionCurve )

{

    auto pRegressionCurve = dynamic_cast<RegressionCurveModel*>(xRegressionCurve.get());

    assert(pRegressionCurve);

    rtl::Reference< ModifyEventForwarder > xModifyEventForwarder;

    {

        MutexGuard aGuard( m_aMutex );

        xModifyEventForwarder = m_xModifyEventForwarder;

        if( std::find( m_aRegressionCurves.begin(), m_aRegressionCurves.end(), pRegressionCurve )

            != m_aRegressionCurves.end())

            throw lang::IllegalArgumentException(u"curve not found"_ustr, static_cast<cppu::OWeakObject*>(this), 1);

        m_aRegressionCurves.push_back( pRegressionCurve );

    }

    ModifyListenerHelper::addListener( rtl::Reference<RegressionCurveModel>(pRegressionCurve), xModifyEventForwarder );

    fireModifyEvent();

}

void SAL_CALL DataSeries::removeRegressionCurve(

    const uno::Reference< chart2::XRegressionCurve >& xRegressionCurve )

{

    if( !xRegressionCurve.is() )

        throw container::NoSuchElementException();

    auto pRegressionCurve = dynamic_cast<RegressionCurveModel*>(xRegressionCurve.get());

    assert(pRegressionCurve);

    rtl::Reference< ModifyEventForwarder > xModifyEventForwarder;

    {

        MutexGuard aGuard( m_aMutex );

        xModifyEventForwarder = m_xModifyEventForwarder;

        tRegressionCurveContainerType::iterator aIt(

            std::find( m_aRegressionCurves.begin(), m_aRegressionCurves.end(), pRegressionCurve ) );

        if( aIt == m_aRegressionCurves.end())

            throw container::NoSuchElementException(

                u"The given regression curve is no element of this series"_ustr,

                static_cast< uno::XWeak * >( this ));

        m_aRegressionCurves.erase( aIt );

    }

    ModifyListenerHelper::removeListener( rtl::Reference<RegressionCurveModel>(pRegressionCurve), xModifyEventForwarder );

    fireModifyEvent();

}

uno::Sequence< uno::Reference< chart2::XRegressionCurve > > SAL_CALL DataSeries::getRegressionCurves()

{

    MutexGuard aGuard( m_aMutex );

    return comphelper::containerToSequence<uno::Reference< chart2::XRegressionCurve >>( m_aRegressionCurves );

}

void SAL_CALL DataSeries::setRegressionCurves(

    const Sequence< Reference< chart2::XRegressionCurve > >& aRegressionCurves )

{

    tRegressionCurveContainerType aOldCurves;

    tRegressionCurveContainerType aNewCurves;

    for (const auto & i : aRegressionCurves)

    {

        auto pRegressionCurve = dynamic_cast<RegressionCurveModel*>(i.get());

        assert(pRegressionCurve);

        aNewCurves.push_back(pRegressionCurve);

    }

    rtl::Reference< ModifyEventForwarder > xModifyEventForwarder;

    {

        MutexGuard aGuard( m_aMutex );

        xModifyEventForwarder = m_xModifyEventForwarder;

        std::swap( aOldCurves, m_aRegressionCurves );

        m_aRegressionCurves = aNewCurves;

    }

    ModifyListenerHelper::removeListenerFromAllElements( aOldCurves, xModifyEventForwarder );

    ModifyListenerHelper::addListenerToAllElements( aNewCurves, xModifyEventForwarder );

    fireModifyEvent();

}

// ____ XModifyBroadcaster ____

void SAL_CALL DataSeries::addModifyListener( const Reference< util::XModifyListener >& aListener )

{

    m_xModifyEventForwarder->addModifyListener( aListener );

}

void SAL_CALL DataSeries::removeModifyListener( const Reference< util::XModifyListener >& aListener )

{

    m_xModifyEventForwarder->removeModifyListener( aListener );

}

// ____ XModifyListener ____

void SAL_CALL DataSeries::modified( const lang::EventObject& aEvent )

{

    m_xModifyEventForwarder->modified( aEvent );

}

// ____ XEventListener (base of XModifyListener) ____

void SAL_CALL DataSeries::disposing( const lang::EventObject& )

{

}

// ____ OPropertySet ____

void DataSeries::firePropertyChangeEvent()

{

    fireModifyEvent();

}

void DataSeries::fireModifyEvent()

{

    m_xModifyEventForwarder->modified( lang::EventObject( static_cast< uno::XWeak* >( this )));

}

using impl::DataSeries_Base;

using ::property::OPropertySet;

IMPLEMENT_FORWARD_XINTERFACE2( DataSeries, DataSeries_Base, OPropertySet )

IMPLEMENT_FORWARD_XTYPEPROVIDER2( DataSeries, DataSeries_Base, OPropertySet )

// implement XServiceInfo methods basing upon getSupportedServiceNames_Static

OUString SAL_CALL DataSeries::getImplementationName()

{

    return u"com.sun.star.comp.chart.DataSeries"_ustr;

}

sal_Bool SAL_CALL DataSeries::supportsService( const OUString& rServiceName )

{

    return cppu::supportsService(this, rServiceName);

}

css::uno::Sequence< OUString > SAL_CALL DataSeries::getSupportedServiceNames()

{

    return {

        u"com.sun.star.chart2.DataSeries"_ustr,

        u"com.sun.star.chart2.DataPointProperties"_ustr,

        u"com.sun.star.beans.PropertySet"_ustr };

}

static Reference< chart2::data::XLabeledDataSequence > lcl_findLSequenceWithOnlyLabel(

    const Sequence< Reference< chart2::data::XLabeledDataSequence > > & rDataSequences )

{

    Reference< chart2::data::XLabeledDataSequence > xResult;

    for( auto const & labeledData : rDataSequences )

    {

        OSL_ENSURE( labeledData.is(), "empty LabeledDataSequence" );

        // no values are set but a label exists

        if( labeledData.is() &&

            ( ! labeledData->getValues().is() &&

              labeledData->getLabel().is()))

        {

            xResult.set( labeledData );

            break;

        }

    }

    return xResult;

}

static OUString lcl_getDataSequenceLabel( const Reference< chart2::data::XDataSequence > & xSequence )

{

    OUString aResult;

    Reference< chart2::data::XTextualDataSequence > xTextSeq( xSequence, uno::UNO_QUERY );

    if( xTextSeq.is())

    {

        Sequence< OUString > aSeq( xTextSeq->getTextualData());

        const sal_Int32 nMax = aSeq.getLength() - 1;

        OUStringBuffer aBuf;

        for( sal_Int32 i = 0; i <= nMax; ++i )

        {

            aBuf.append( aSeq[i] );

            if( i < nMax )

                aBuf.append( ' ');

        }

        aResult = aBuf.makeStringAndClear();

    }

    else if( xSequence.is())

    {

        Sequence< uno::Any > aSeq( xSequence->getData());

        const sal_Int32 nMax = aSeq.getLength() - 1;

        OUString aVal;

        OUStringBuffer aBuf;

        double fNum = 0;

        for( sal_Int32 i = 0; i <= nMax; ++i )

        {

            if( aSeq[i] >>= aVal )

            {

                aBuf.append( aVal );

                if( i < nMax )

                    aBuf.append(  ' ');

            }

            else if( aSeq[ i ] >>= fNum )

            {

                aBuf.append( fNum );

                if( i < nMax )

                    aBuf.append( ' ');

            }

        }

        aResult = aBuf.makeStringAndClear();

    }

    return aResult;

}

static OUString getLabelForLabeledDataSequence(

    const Reference< chart2::data::XLabeledDataSequence > & xLabeledSeq )

{

    OUString aResult;

    if( xLabeledSeq.is())

    {

        Reference< chart2::data::XDataSequence > xSeq( xLabeledSeq->getLabel());

        if( xSeq.is() )

            aResult = lcl_getDataSequenceLabel( xSeq );

        if( !xSeq.is() || aResult.isEmpty() )

        {

            // no label set or label content is empty -> use auto-generated one

            Reference< chart2::data::XDataSequence > xValueSeq( xLabeledSeq->getValues() );

            if( xValueSeq.is() )

            {

                Sequence< OUString > aLabels( xValueSeq->generateLabel(

                    chart2::data::LabelOrigin_SHORT_SIDE ) );

                // no labels returned is interpreted as: auto-generation not

                // supported by sequence

                if( aLabels.hasElements() )

                    aResult=aLabels[0];

                else

                {

                    //todo?: maybe use the index of the series as name

                    //but as the index may change it would be better to have such a name persistent

                    //what is not possible at the moment

                    //--> maybe use the identifier as part of the name ...

                    aResult = lcl_getDataSequenceLabel( xValueSeq );

                }

            }

        }

    }

    return aResult;

}

OUString DataSeries::getLabelForRole( const OUString & rLabelSequenceRole )

{

    OUString aResult;

    Reference< chart2::data::XLabeledDataSequence > xLabeledSeq(

        ::chart::DataSeriesHelper::getDataSequenceByRole( this, rLabelSequenceRole ));

    if( xLabeledSeq.is())

        aResult = getLabelForLabeledDataSequence( xLabeledSeq );

    else

    {

        // special case: labeled data series with only a label and no values may

        // serve as label

        xLabeledSeq.set( lcl_findLSequenceWithOnlyLabel( getDataSequences() ));

        if( xLabeledSeq.is())

        {

            Reference< chart2::data::XDataSequence > xSeq( xLabeledSeq->getLabel());

            if( xSeq.is())

                aResult = lcl_getDataSequenceLabel( xSeq );

        }

    }

    return aResult;

}

static bool lcl_SequenceHasUnhiddenData( const uno::Reference< chart2::data::XDataSequence >& xDataSequence )

{

    if (!xDataSequence.is())

        return false;

    uno::Reference< beans::XPropertySet > xProp( xDataSequence, uno::UNO_QUERY );

    if( xProp.is() )

    {

        uno::Sequence< sal_Int32 > aHiddenValues;

        try

        {

            xProp->getPropertyValue( u"HiddenValues"_ustr ) >>= aHiddenValues;

            if( !aHiddenValues.hasElements() )

                return true;

        }

        catch( const uno::Exception& )

        {

            return true;

        }

    }

    return xDataSequence->getData().hasElements();

}

bool DataSeries::hasUnhiddenData()

{

    MutexGuard aGuard( m_aMutex );

    for(uno::Reference< chart2::data::XLabeledDataSequence > const & rDataSequence : m_aDataSequences)

    {

        if( !rDataSequence.is() )

            continue;

        if( lcl_SequenceHasUnhiddenData( rDataSequence->getValues() ) )

            return true;

    }

    return false;

}

bool DataSeries::hasPointOwnColor(

        sal_Int32 nPointIndex

        , const css::uno::Reference< css::beans::XPropertySet >& xDataPointProperties //may be NULL this is just for performance

         )

{

    if( hasPointOwnProperties( nPointIndex ))

    {

        uno::Reference< beans::XPropertyState > xPointState( xDataPointProperties, uno::UNO_QUERY );

        if( !xPointState.is() )

        {

            xPointState.set( getDataPointByIndex( nPointIndex ), uno::UNO_QUERY );

        }

        if( !xPointState.is() )

            return false;

        return (xPointState->getPropertyState( u"Color"_ustr) != beans::PropertyState_DEFAULT_VALUE );

    }

    return false;

}

bool DataSeries::hasPointOwnProperties( sal_Int32 nPointIndex )

{

    MutexGuard aGuard( m_aMutex );

    return m_aAttributedDataPoints.find(nPointIndex) != m_aAttributedDataPoints.end();

}

sal_Int32 DataSeries::getAttachedAxisIndex()

{

    sal_Int32 nRet = 0;

    try

    {

        getFastPropertyValue( ::chart::DataSeriesProperties::PROP_DATASERIES_ATTACHED_AXIS_INDEX ) >>= nRet;

    }

    catch( const uno::Exception & )

    {

        DBG_UNHANDLED_EXCEPTION("chart2");

    }

    return nRet;

}

void DataSeries::switchSymbolsOnOrOff( bool bSymbolsOn, sal_Int32 nSeriesIndex )

{

    css::chart2::Symbol aSymbProp;

    if( getPropertyValue( u"Symbol"_ustr) >>= aSymbProp )

    {

        if( !bSymbolsOn )

            aSymbProp.Style = chart2::SymbolStyle_NONE;

        else if( aSymbProp.Style == chart2::SymbolStyle_NONE )

        {

            aSymbProp.Style = chart2::SymbolStyle_STANDARD;

            aSymbProp.StandardSymbol = nSeriesIndex;

        }

        setPropertyValue( u"Symbol"_ustr, uno::Any( aSymbProp ));

    }

    //todo: check attributed data points

}

void DataSeries::switchLinesOnOrOff( bool bLinesOn )

{

    if( bLinesOn )

    {

        // keep line-styles that are not NONE

        css::drawing::LineStyle eLineStyle;

        if( (getPropertyValue( u"LineStyle"_ustr) >>= eLineStyle ) &&

            eLineStyle == drawing::LineStyle_NONE )

        {

            setPropertyValue( u"LineStyle"_ustr, uno::Any( drawing::LineStyle_SOLID ) );

        }

    }

    else

        setPropertyValue( u"LineStyle"_ustr, uno::Any( drawing::LineStyle_NONE ) );

}

void DataSeries::makeLinesThickOrThin( bool bThick )

{

    sal_Int32 nNewValue = bThick ? 80 : 0;

    sal_Int32 nOldValue = 0;

    if( (getPropertyValue( u"LineWidth"_ustr) >>= nOldValue ) &&

        nOldValue != nNewValue )

    {

        if( !(bThick && nOldValue>0))

            setPropertyValue( u"LineWidth"_ustr, uno::Any( nNewValue ) );

    }

}

void DataSeries::setPropertyAlsoToAllAttributedDataPoints( const OUString& rPropertyName, const uno::Any& rPropertyValue )

{

    setPropertyValue( rPropertyName, rPropertyValue );

    std::vector<sal_Int32> aAttributedDataPointIndexList;

    {

        MutexGuard aGuard( m_aMutex );

        aAttributedDataPointIndexList.reserve(m_aAttributedDataPoints.size());

        for (const auto & rPair : m_aAttributedDataPoints)

            aAttributedDataPointIndexList.push_back(rPair.first);

    }

    for(sal_Int32 nIdx : aAttributedDataPointIndexList)

    {

        Reference< beans::XPropertySet > xPointProp( getDataPointByIndex(nIdx) );

        if(!xPointProp.is())

            continue;

        xPointProp->setPropertyValue( rPropertyName, rPropertyValue );

        if( rPropertyName == "LabelPlacement" )

        {

            xPointProp->setPropertyValue(u"CustomLabelPosition"_ustr, uno::Any());

            xPointProp->setPropertyValue(u"CustomLabelSize"_ustr, uno::Any());

        }

    }

}

bool DataSeries::hasAttributedDataPointDifferentValue(

                                              const OUString& rPropertyName, const uno::Any& rPropertyValue )

{

    std::vector<sal_Int32> aAttributedDataPointIndexList;

    {

        MutexGuard aGuard( m_aMutex );

        aAttributedDataPointIndexList.reserve(m_aAttributedDataPoints.size());

        for (const auto & rPair : m_aAttributedDataPoints)

            aAttributedDataPointIndexList.push_back(rPair.first);

    }

    for(sal_Int32 nIdx : aAttributedDataPointIndexList)

    {

        Reference< beans::XPropertySet > xPointProp( getDataPointByIndex(nIdx) );

        if(!xPointProp.is())

            continue;

        uno::Any aPointValue( xPointProp->getPropertyValue( rPropertyName ) );

        if( rPropertyValue != aPointValue )

            return true;

    }

    return false;

}

bool DataSeries::hasDataLabelsAtSeries()

{

    bool bRet = false;

    try

    {

        chart2::DataPointLabel aLabel;

        if( getPropertyValue(CHART_UNONAME_LABEL) >>= aLabel )

            bRet = aLabel.ShowNumber || aLabel.ShowNumberInPercent || aLabel.ShowCategoryName

                   || aLabel.ShowSeriesName;

    }

    catch(const uno::Exception &)

    {

        TOOLS_WARN_EXCEPTION("chart2", "" );

    }

    return bRet;

}

bool DataSeries::hasDataLabelsAtPoints()

{

    bool bRet = false;

    try

    {

        std::vector<sal_Int32> aAttributedDataPointIndexList;

        {

            MutexGuard aGuard( m_aMutex );

            aAttributedDataPointIndexList.reserve(m_aAttributedDataPoints.size());

            for (const auto & rPair : m_aAttributedDataPoints)

                aAttributedDataPointIndexList.push_back(rPair.first);

        }

        for(sal_Int32 nIdx : aAttributedDataPointIndexList)

        {

            Reference< beans::XPropertySet > xPointProp( getDataPointByIndex(nIdx) );

            if( xPointProp.is() )