/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: SchXMLTableContext.cxx,v $
 *
 *  $Revision: 1.18 $
 *
 *  last change: $Author: hr $ $Date: 2007-06-27 14:49:58 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2005 by Sun Microsystems, Inc.
 *    901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License version 2.1, as published by the Free Software Foundation.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *    MA  02111-1307  USA
 *
 ************************************************************************/

// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_xmloff.hxx"

#include "SchXMLTableContext.hxx"
#include "SchXMLParagraphContext.hxx"
#include "SchXMLImport.hxx"
#include "SchXMLTools.hxx"
#include "transporttypes.hxx"

#ifndef _TOOLS_DEBUG_HXX
#include <tools/debug.hxx>
#endif
#ifndef INCLUDED_RTL_MATH_HXX
#include <rtl/math.hxx>
#endif

#ifndef _XMLOFF_XMLNMSPE_HXX
#include "xmlnmspe.hxx"
#endif
#ifndef _XMLOFF_XMLTOKEN_HXX
#include <xmloff/xmltoken.hxx>
#endif
#ifndef _XMLOFF_NMSPMAP_HXX
#include <xmloff/nmspmap.hxx>
#endif
#ifndef _XMLOFF_XMLUCONV_HXX
#include <xmloff/xmluconv.hxx>
#endif

#ifndef _COM_SUN_STAR_FRAME_XMODEL_HPP_
#include <com/sun/star/frame/XModel.hpp>
#endif
#ifndef _COM_SUN_STAR_CHART2_XCHARTDOCUMENT_HPP_
#include <com/sun/star/chart2/XChartDocument.hpp>
#endif
#ifndef _COM_SUN_STAR_CHART_XCHARTDATAARRAY_HPP_
#include <com/sun/star/chart/XChartDataArray.hpp>
#endif
#ifndef _COM_SUN_STAR_CHART_CHARTSERIESADDRESS_HPP_
#include <com/sun/star/chart/ChartSeriesAddress.hpp>
#endif
#ifndef _COM_SUN_STAR_BEANS_XPROPERTYSET_HPP_
#include <com/sun/star/beans/XPropertySet.hpp>
#endif
#ifndef _COM_SUN_STAR_BEANS_XPROPERTYSETINFO_HPP_
#include <com/sun/star/beans/XPropertySetInfo.hpp>
#endif
#ifndef _COM_SUN_STAR_BEANS_PROPERTYATTRIBUTE_HPP_
#include <com/sun/star/beans/PropertyAttribute.hpp>
#endif

#include <com/sun/star/chart2/XDiagram.hpp>
#include <com/sun/star/chart2/XAxis.hpp>
#include <com/sun/star/chart2/XCoordinateSystemContainer.hpp>
#include <com/sun/star/chart2/AxisType.hpp>

#include <algorithm>

using namespace com::sun::star;
using namespace ::xmloff::token;
using ::com::sun::star::uno::Sequence;
using ::com::sun::star::uno::Reference;
using ::rtl::OUString;

namespace
{
Sequence< OUString > lcl_getCategoriesFromTable( const SchXMLTable & rTable, bool bHasLabels )
{
    sal_Int32 nNumRows( static_cast< sal_Int32 >( rTable.aData.size()));
    OSL_ENSURE( static_cast< size_t >( nNumRows ) == rTable.aData.size(), "Table too big" );

    sal_Int32 nOffset(bHasLabels ? 1 : 0);
    Sequence< OUString > aResult( nNumRows - nOffset );
    sal_Int32 i=nOffset;
    for( ; i<nNumRows; ++i )
    {
        if( !rTable.aData[i].empty() && (rTable.aData[i].front().eType == SCH_CELL_TYPE_STRING ))
            aResult[i - nOffset] = rTable.aData[i].front().aString;
    }
    return aResult;
}

std::vector< Reference< chart2::XAxis > > lcl_getAxesHoldingCategoriesFromDiagram(
    const Reference< chart2::XDiagram > & xDiagram )
{
    std::vector< Reference< chart2::XAxis > > aRet;

    Reference< chart2::XAxis > xResult;
    // return first x-axis as fall-back
    Reference< chart2::XAxis > xFallBack;
    try
    {
        Reference< chart2::XCoordinateSystemContainer > xCooSysCnt(
            xDiagram, uno::UNO_QUERY_THROW );
        Sequence< Reference< chart2::XCoordinateSystem > > aCooSysSeq(
            xCooSysCnt->getCoordinateSystems());
        for( sal_Int32 i=0; i<aCooSysSeq.getLength(); ++i )
        {
            Reference< chart2::XCoordinateSystem > xCooSys( aCooSysSeq[i] );
            OSL_ASSERT( xCooSys.is());
            for( sal_Int32 nN = xCooSys->getDimension(); nN--; )
            {
                const sal_Int32 nMaximumScaleIndex = xCooSys->getMaximumAxisIndexByDimension(nN);
                for(sal_Int32 nI=0; nI<=nMaximumScaleIndex; ++nI)
                {
                    Reference< chart2::XAxis > xAxis = xCooSys->getAxisByDimension( nN,nI );
                    OSL_ASSERT( xAxis.is());
                    if( xAxis.is())
                    {
                        chart2::ScaleData aScaleData = xAxis->getScaleData();
                        if( aScaleData.Categories.is() || (aScaleData.AxisType == chart2::AxisType::CATEGORY) )
                        {
                            aRet.push_back(xAxis);
                        }
                        if( (nN == 0) && !xFallBack.is())
                            xFallBack.set( xAxis );
                    }
                }
            }
        }
    }
    catch( uno::Exception & )
    {
    }

    if( aRet.empty())
        aRet.push_back(xFallBack);

    return aRet;
}

struct lcl_setCategories : public ::std::unary_function< Reference< chart2::XAxis >, void >
{
    lcl_setCategories( const Reference< chart2::data::XDataProvider > & xProvider ) :
            m_xProvider( xProvider )
    {}
    void operator() ( const Reference< chart2::XAxis > & xAxis )
    {
        if( xAxis.is() && m_xProvider.is())
        {
            chart2::ScaleData aSData( xAxis->getScaleData());
            if( aSData.Categories.is())
            {
                aSData.Categories->setValues(
                    m_xProvider->createDataSequenceByRangeRepresentation(
                        OUString(RTL_CONSTASCII_USTRINGPARAM("categories"))));
                xAxis->setScaleData( aSData );
            }
        }
    }

private:
    Reference< chart2::data::XDataProvider > m_xProvider;
};

void lcl_ApplyColumnLabels(
    const ::std::vector< SchXMLCell > & rFirstRow,
    Sequence< OUString > & rOutColumnLabels,
    sal_Int32 nOffset )
{
    const sal_Int32 nColumnLabelsSize = rOutColumnLabels.getLength();
    const sal_Int32 nMax = ::std::min< sal_Int32 >( nColumnLabelsSize,
                                                    static_cast< sal_Int32 >( rFirstRow.size()) - nOffset );
    OSL_ASSERT( nMax == nColumnLabelsSize );
    for( sal_Int32 i=0; i<nMax; ++i )
        if( rFirstRow[i+nOffset].eType == SCH_CELL_TYPE_STRING )
            rOutColumnLabels[i] = rFirstRow[i+nOffset].aString;
}

struct lcl_ApplyCellToData : public ::std::unary_function< SchXMLCell, void >
{
    lcl_ApplyCellToData( Sequence< double > & rOutData,
                         Sequence< OUString > & rOutRowLabels ) :
            m_rData( rOutData ),
            m_rRowLabels( rOutRowLabels ),
            m_nIndex( 0 ),
            m_nSize( rOutData.getLength())
    {
        ::rtl::math::setNan( &m_fNaN );
    }

    void operator() ( const SchXMLCell & rCell )
    {
        if( m_nIndex < m_nSize )
        {
            if( rCell.eType == SCH_CELL_TYPE_FLOAT )
                m_rData[m_nIndex] = rCell.fValue;
            else
                m_rData[m_nIndex] = m_fNaN;
        }
        ++m_nIndex;
    }

private:
    Sequence< double > & m_rData;
    Sequence< OUString > & m_rRowLabels;
    sal_Int32 m_nIndex;
    sal_Int32 m_nSize;
    double m_fNaN;
};

struct lcl_ApplyRowsToData : public ::std::unary_function< ::std::vector< SchXMLCell >, void >
{
    lcl_ApplyRowsToData( Sequence< Sequence< double > > & rOutData,
                         Sequence< OUString > & rOutRowLabels,
                         sal_Int32 nOffset,
                         bool bHasHeader ) :
            m_rData( rOutData ),
            m_rRowLabels( rOutRowLabels ),
            m_nIndex( 0 ),
            m_nOuterSize( rOutData.getLength()),
            m_nOffset( nOffset ),
            m_bHasHeader( bHasHeader )
    {}
    void operator() ( const ::std::vector< SchXMLCell > & rRow )
    {
        if( ! rRow.empty())
        {
            // label
            if( m_bHasHeader && m_nIndex < m_rRowLabels.getLength() && rRow.front().eType == SCH_CELL_TYPE_STRING )
                m_rRowLabels[m_nIndex] = rRow.front().aString;
            // values
            if( m_nIndex < m_nOuterSize )
                ::std::for_each( rRow.begin() + m_nOffset, rRow.end(), lcl_ApplyCellToData( m_rData[m_nIndex], m_rRowLabels ));
        }
        ++m_nIndex;
    }

private:
    Sequence< Sequence< double > > & m_rData;
    Sequence< OUString > & m_rRowLabels;
    sal_Int32 m_nIndex;
    sal_Int32 m_nOuterSize;
    sal_Int32 m_nOffset;
    bool      m_bHasHeader;
};

Sequence< Sequence< double > > lcl_getSwappedArray( const Sequence< Sequence< double > > & rData )
{
    sal_Int32 nOldOuterSize = rData.getLength();
    sal_Int32 nOldInnerSize = (nOldOuterSize == 0 ? 0 : rData[0].getLength());
    Sequence< Sequence< double > > aResult( nOldInnerSize );

    for( sal_Int32 i=0; i<nOldInnerSize; ++i )
        aResult[i].realloc( nOldOuterSize );

    for( sal_Int32 nOuter=0; nOuter<nOldOuterSize; ++nOuter )
        for( sal_Int32 nInner=0; nInner<nOldInnerSize; ++nInner )
            aResult[nInner][nOuter] = rData[nOuter][nInner];

    return aResult;
}

void lcl_applyXMLTableToInternalDataprovider(
    const SchXMLTable & rTable,
    const Reference< chart::XChartDataArray > & xDataArray )
{
    sal_Int32 nNumRows( static_cast< sal_Int32 >( rTable.aData.size()));
    sal_Int32 nRowOffset = 0;
    if( rTable.bHasHeaderRow )
    {
        --nNumRows;
        nRowOffset = 1;
    }
    sal_Int32 nNumColumns( rTable.nMaxColumnIndex + 1 );
    sal_Int32 nColOffset = 0;
    if( rTable.bHasHeaderColumn )
    {
        --nNumColumns;
        nColOffset = 1;
    }

    Sequence< Sequence< double > > aData( nNumRows );
    Sequence< OUString > aRowLabels( nNumRows );
    Sequence< OUString > aColumnLabels( nNumColumns );
    for( sal_Int32 i=0; i<nNumRows; ++i )
        aData[i].realloc( nNumColumns );

    if( rTable.aData.begin() != rTable.aData.end())
    {
        if( rTable.bHasHeaderRow )
            lcl_ApplyColumnLabels( rTable.aData.front(), aColumnLabels, nColOffset );
        ::for_each( rTable.aData.begin() + nRowOffset, rTable.aData.end(),
                    lcl_ApplyRowsToData( aData, aRowLabels, nColOffset, rTable.bHasHeaderColumn ));
    }

    xDataArray->setData( aData );

    if( rTable.bHasHeaderColumn )
        xDataArray->setRowDescriptions( aRowLabels );
    if( rTable.bHasHeaderRow )
        xDataArray->setColumnDescriptions( aColumnLabels );
}

void lcl_copyProperties(
    const Reference< beans::XPropertySet > & xSource,
    const Reference< beans::XPropertySet > & xDestination )
{
    if( ! (xSource.is() && xDestination.is()))
        return;

    try
    {
        Reference< beans::XPropertySetInfo > xSrcInfo( xSource->getPropertySetInfo(), uno::UNO_QUERY_THROW );
        Reference< beans::XPropertySetInfo > xDestInfo( xDestination->getPropertySetInfo(), uno::UNO_QUERY_THROW );
        Sequence< beans::Property > aProperties( xSrcInfo->getProperties());
        const sal_Int32 nLength = aProperties.getLength();
        for( sal_Int32 i = 0; i < nLength; ++i )
        {
            OUString aName( aProperties[i].Name);
            if( xDestInfo->hasPropertyByName( aName ))
            {
                beans::Property aProp( xDestInfo->getPropertyByName( aName ));
                if( (aProp.Attributes & beans::PropertyAttribute::READONLY) == 0 )
                    xDestination->setPropertyValue(
                        aName, xSource->getPropertyValue( aName ));
            }
        }
    }
    catch( const uno::Exception & )
    {
        OSL_ENSURE( false, "Copying property sets failed!" );
    }
}

} // anonymous namespace


// ----------------------------------------
// class SchXMLTableContext
// ----------------------------------------

SchXMLTableContext::SchXMLTableContext( SchXMLImportHelper& rImpHelper,
                                        SvXMLImport& rImport,
                                        const rtl::OUString& rLName,
                                        SchXMLTable& aTable ) :
        SvXMLImportContext( rImport, XML_NAMESPACE_TABLE, rLName ),
        mrImportHelper( rImpHelper ),
        mrTable( aTable )
{
    mrTable.nColumnIndex = -1;
    mrTable.nMaxColumnIndex = -1;
    mrTable.nRowIndex = -1;
    mrTable.aData.clear();
}

SchXMLTableContext::~SchXMLTableContext()
{
}

SvXMLImportContext *SchXMLTableContext::CreateChildContext(
    USHORT nPrefix,
    const rtl::OUString& rLocalName,
    const uno::Reference< xml::sax::XAttributeList >& )
{
    SvXMLImportContext* pContext = 0;
    const SvXMLTokenMap& rTokenMap = mrImportHelper.GetTableElemTokenMap();

    switch( rTokenMap.Get( nPrefix, rLocalName ))
    {
        case XML_TOK_TABLE_HEADER_COLS:
            mrTable.bHasHeaderColumn = true;
            // fall through intended
        case XML_TOK_TABLE_COLUMNS:
            pContext = new SchXMLTableColumnsContext( mrImportHelper, GetImport(), rLocalName, mrTable );
            break;

        case XML_TOK_TABLE_COLUMN:
            pContext = new SchXMLTableColumnContext( mrImportHelper, GetImport(), rLocalName, mrTable );
            break;

        case XML_TOK_TABLE_HEADER_ROWS:
            mrTable.bHasHeaderRow = true;
            // fall through intended
        case XML_TOK_TABLE_ROWS:
            pContext = new SchXMLTableRowsContext( mrImportHelper, GetImport(), rLocalName, mrTable );
            break;

        case XML_TOK_TABLE_ROW:
            pContext = new SchXMLTableRowContext( mrImportHelper, GetImport(), rLocalName, mrTable );
            break;

        default:
            pContext = new SvXMLImportContext( GetImport(), nPrefix, rLocalName );
    }

    return pContext;
}

// ========================================
// classes for columns
// ========================================

// ----------------------------------------
// class SchXMLTableColumnsContext
// ----------------------------------------

SchXMLTableColumnsContext::SchXMLTableColumnsContext(
    SchXMLImportHelper& rImpHelper,
    SvXMLImport& rImport,
    const rtl::OUString& rLocalName,
    SchXMLTable& aTable ) :
        SvXMLImportContext( rImport, XML_NAMESPACE_TABLE, rLocalName ),
        mrImportHelper( rImpHelper ),
        mrTable( aTable )
{
}

SchXMLTableColumnsContext::~SchXMLTableColumnsContext()
{
}

SvXMLImportContext* SchXMLTableColumnsContext::CreateChildContext(
    USHORT nPrefix,
    const rtl::OUString& rLocalName,
    const uno::Reference< xml::sax::XAttributeList >& )
{
    SvXMLImportContext* pContext = 0;

    if( nPrefix == XML_NAMESPACE_TABLE &&
        IsXMLToken( rLocalName, XML_TABLE_COLUMN ) )
    {
        pContext = new SchXMLTableColumnContext( mrImportHelper, GetImport(), rLocalName, mrTable );
    }
    else
        pContext = new SvXMLImportContext( GetImport(), nPrefix, rLocalName );

    return pContext;
}

// ----------------------------------------
// class SchXMLTableColumnContext
// ----------------------------------------

SchXMLTableColumnContext::SchXMLTableColumnContext(
    SchXMLImportHelper& rImpHelper,
    SvXMLImport& rImport,
    const rtl::OUString& rLocalName,
    SchXMLTable& aTable ) :
        SvXMLImportContext( rImport, XML_NAMESPACE_TABLE, rLocalName ),
        mrImportHelper( rImpHelper ),
        mrTable( aTable )
{
}

void SchXMLTableColumnContext::StartElement( const uno::Reference< xml::sax::XAttributeList >& xAttrList )
{
    // get number-columns-repeated attribute
    sal_Int16 nAttrCount = xAttrList.is()? xAttrList->getLength(): 0;
    rtl::OUString aValue;

    for( sal_Int16 i = 0; i < nAttrCount; i++ )
    {
        rtl::OUString sAttrName = xAttrList->getNameByIndex( i );
        rtl::OUString aLocalName;
        USHORT nPrefix = GetImport().GetNamespaceMap().GetKeyByAttrName( sAttrName, &aLocalName );

        if( nPrefix == XML_NAMESPACE_TABLE &&
            IsXMLToken( aLocalName, XML_NUMBER_COLUMNS_REPEATED ) )
        {
            aValue = xAttrList->getValueByIndex( i );
            break;   // we only need this attribute
        }
    }

    if( aValue.getLength())
    {
        sal_Int32 nRepeated = aValue.toInt32();
        mrTable.nNumberOfColsEstimate += nRepeated;
    }
    else
    {
        mrTable.nNumberOfColsEstimate++;
    }
}

SchXMLTableColumnContext::~SchXMLTableColumnContext()
{
}

// ========================================
// classes for rows
// ========================================

// ----------------------------------------
// class SchXMLTableRowsContext
// ----------------------------------------

SchXMLTableRowsContext::SchXMLTableRowsContext(
    SchXMLImportHelper& rImpHelper,
    SvXMLImport& rImport,
    const rtl::OUString& rLocalName,
    SchXMLTable& aTable ) :
        SvXMLImportContext( rImport, XML_NAMESPACE_TABLE, rLocalName ),
        mrImportHelper( rImpHelper ),
        mrTable( aTable )
{
}

SchXMLTableRowsContext::~SchXMLTableRowsContext()
{
}

SvXMLImportContext* SchXMLTableRowsContext::CreateChildContext(
    USHORT nPrefix,
    const rtl::OUString& rLocalName,
    const uno::Reference< xml::sax::XAttributeList >& )
{
    SvXMLImportContext* pContext = 0;

    if( nPrefix == XML_NAMESPACE_TABLE &&
        IsXMLToken( rLocalName, XML_TABLE_ROW ) )
    {
        pContext = new SchXMLTableRowContext( mrImportHelper, GetImport(), rLocalName, mrTable );
    }
    else
    {
        pContext = new SvXMLImportContext( GetImport(), nPrefix, rLocalName );
    }

    return pContext;
}

// ----------------------------------------
// class SchXMLTableRowContext
// ----------------------------------------

SchXMLTableRowContext::SchXMLTableRowContext(
    SchXMLImportHelper& rImpHelper,
    SvXMLImport& rImport,
    const rtl::OUString& rLocalName,
    SchXMLTable& aTable ) :
        SvXMLImportContext( rImport, XML_NAMESPACE_TABLE, rLocalName ),
        mrImportHelper( rImpHelper ),
        mrTable( aTable )
{
    mrTable.nColumnIndex = -1;
    mrTable.nRowIndex++;

    std::vector< SchXMLCell > aNewRow;
    aNewRow.reserve( mrTable.nNumberOfColsEstimate );
    while( mrTable.aData.size() <= (unsigned long)mrTable.nRowIndex )
        mrTable.aData.push_back( aNewRow );
}

SchXMLTableRowContext::~SchXMLTableRowContext()
{
}

SvXMLImportContext* SchXMLTableRowContext::CreateChildContext(
    USHORT nPrefix,
    const rtl::OUString& rLocalName,
    const uno::Reference< xml::sax::XAttributeList >& )
{
    SvXMLImportContext* pContext = 0;

    // <table:table-cell> element
    if( nPrefix == XML_NAMESPACE_TABLE &&
        IsXMLToken(rLocalName, XML_TABLE_CELL ) )
    {
        pContext = new SchXMLTableCellContext( mrImportHelper, GetImport(), rLocalName, mrTable );
    }
    else
    {
        pContext = new SvXMLImportContext( GetImport(), nPrefix, rLocalName );
    }

    return pContext;
}


// ========================================
// classes for cells and their content
// ========================================

// ----------------------------------------
// class SchXMLTableCellContext
// ----------------------------------------

SchXMLTableCellContext::SchXMLTableCellContext(
    SchXMLImportHelper& rImpHelper,
    SvXMLImport& rImport,
    const rtl::OUString& rLocalName,
    SchXMLTable& aTable ) :
        SvXMLImportContext( rImport, XML_NAMESPACE_TABLE, rLocalName ),
        mrImportHelper( rImpHelper ),
        mrTable( aTable )
{
}

SchXMLTableCellContext::~SchXMLTableCellContext()
{
}

void SchXMLTableCellContext::StartElement( const uno::Reference< xml::sax::XAttributeList >& xAttrList )
{
    sal_Int16 nAttrCount = xAttrList.is()? xAttrList->getLength(): 0;
    rtl::OUString aValue;
    rtl::OUString aLocalName;
    rtl::OUString aCellContent;
    SchXMLCellType eValueType  = SCH_CELL_TYPE_UNKNOWN;
    const SvXMLTokenMap& rAttrTokenMap = mrImportHelper.GetCellAttrTokenMap();

    for( sal_Int16 i = 0; i < nAttrCount; i++ )
    {
        rtl::OUString sAttrName = xAttrList->getNameByIndex( i );
        USHORT nPrefix = GetImport().GetNamespaceMap().GetKeyByAttrName( sAttrName, &aLocalName );

        switch( rAttrTokenMap.Get( nPrefix, aLocalName ))
        {
            case XML_TOK_CELL_VAL_TYPE:
                aValue = xAttrList->getValueByIndex( i );
                if( IsXMLToken( aValue, XML_FLOAT ) )
                    eValueType = SCH_CELL_TYPE_FLOAT;
                else if( IsXMLToken( aValue, XML_STRING ) )
                    eValueType = SCH_CELL_TYPE_STRING;
                break;

            case XML_TOK_CELL_VALUE:
                aCellContent = xAttrList->getValueByIndex( i );
                break;
        }
    }

    mbReadPara = sal_True;
    SchXMLCell aCell;
    aCell.eType = eValueType;

    if( eValueType == SCH_CELL_TYPE_FLOAT )
    {
        double fData;
        // the result may be false if a NaN is read, but that's ok
        SvXMLUnitConverter::convertDouble( fData, aCellContent );

        aCell.fValue = fData;
        // dont read following <text:p> element
        mbReadPara = sal_False;
    }

    mrTable.aData[ mrTable.nRowIndex ].push_back( aCell );
    mrTable.nColumnIndex++;
    if( mrTable.nMaxColumnIndex < mrTable.nColumnIndex )
        mrTable.nMaxColumnIndex = mrTable.nColumnIndex;
}

SvXMLImportContext* SchXMLTableCellContext::CreateChildContext(
    USHORT nPrefix,
    const rtl::OUString& rLocalName,
    const uno::Reference< xml::sax::XAttributeList >& )
{
    SvXMLImportContext* pContext = 0;

    // <text:p> element
    if( mbReadPara &&
        nPrefix == XML_NAMESPACE_TEXT &&
        IsXMLToken( rLocalName, XML_P ) )
    {
        // we have to read a string here (not a float)
        pContext = new SchXMLParagraphContext( GetImport(), rLocalName, maCellContent );
    }
    else
    {
        pContext = new SvXMLImportContext( GetImport(), nPrefix, rLocalName );
    }

    return pContext;
}

void SchXMLTableCellContext::EndElement()
{
    if( mbReadPara && maCellContent.getLength())
        mrTable.aData[ mrTable.nRowIndex ][ mrTable.nColumnIndex ].aString = maCellContent;
}

// ========================================

// just interpret the table in a linear way with no references used
// (this is just a workaround for clipboard handling in EA2)
void SchXMLTableHelper::applyTableSimple(
    const SchXMLTable& rTable,
    uno::Reference< chart::XChartDataArray > xData )
{
    // interpret table like this:
    //
    //  series ----+---+
    //             |   |
    //  categories |   |
    //        |    |   |
    //        V    V   V
    //        A    B   C  ...
    //   1         x   x        <--- labels
    //   2    x    0   0
    //   3    x    0   0
    //  ...

    // Standard Role-interpretation:

    // Column 1 contains the Categories

    // Chart Type/Class | Col 2  Col 3  Col 4  Col 5  Col 6 | Series | Domain
    // -----------------+-----------------------------------+--------+-------
    // Category Charts  | Y 1    Y 2    Y 3    Y 4     ...  |   Y    |   -
    // XY Chart         | X all  Y 1    Y 2    Y 3     ...  |   Y    |   X
    // Stock Chart 1    | Min    Max    Close    -      -   | Close  |   -
    // Stock Chart 2    | Open   Min    Max    Close    -   | Close  |   -
    // Stock Chart 3    | Volume Min    Max    Close    -   | Close  |   -
    // Stock Chart 4    | Volume Open   Min    Max    Close | Close  |   -

    if( xData.is())
    {
        // get NaN
        double fSolarNaN;
        ::rtl::math::setNan( &fSolarNaN );
        double fNaN = fSolarNaN;
        sal_Bool bConvertNaN = sal_False;

        uno::Reference< chart::XChartData > xChartData( xData, uno::UNO_QUERY );
        if( xChartData.is())
        {
            fNaN = xChartData->getNotANumber();
            bConvertNaN = ( ! ::rtl::math::isNan( fNaN ));
        }

        sal_Int32 nRowCount = rTable.aData.size();
        sal_Int32 nColumnCount = 0;
        sal_Int32 nCol = 0, nRow = 0;
        if( nRowCount )
            nColumnCount = rTable.aData[ 0 ].size();

        // #i27909# avoid illegal index access for empty tables
        if( nColumnCount == 0 || nRowCount == 0 )
            return;

        uno::Sequence< ::rtl::OUString > aCategories( nRowCount - 1 );
        uno::Sequence< ::rtl::OUString > aLabels( nColumnCount - 1 );
        uno::Sequence< uno::Sequence< double > > aData( nRowCount - 1 );
        for( nRow = 0; nRow < nRowCount - 1; nRow++ )
            aData[ nRow ].realloc( nColumnCount - 1 );

        // set labels
        ::std::vector< ::std::vector< SchXMLCell > >::const_iterator iRow = rTable.aData.begin();
        for( nCol = 1; nCol < nColumnCount; nCol++ )
        {
            aLabels[ nCol - 1 ] = (*iRow)[ nCol ].aString;
        }
        xData->setColumnDescriptions( aLabels );

        double fVal;
        const sal_Bool bConstConvertNan = bConvertNaN;
        for( ++iRow, nRow = 0; iRow != rTable.aData.end(); iRow++, nRow++ )
        {
            aCategories[ nRow ] = (*iRow)[ 0 ].aString;
            sal_Int32 nTableColCount( static_cast< sal_Int32 >((*iRow).size()));
            for( nCol = 1; nCol < nTableColCount; nCol++ )
            {
                fVal = (*iRow)[ nCol ].fValue;
                if( bConstConvertNan &&
                    ::rtl::math::isNan( fVal ))
                    aData[ nRow ][ nCol - 1 ] = fNaN;
                else
                    aData[ nRow ][ nCol - 1 ] = fVal;
            }
            // set remaining cells to NaN
            for( ; nCol < nColumnCount; ++nCol )
                if( bConstConvertNan )
                    aData[ nRow ][nCol - 1 ] = fNaN;
                else
                    ::rtl::math::setNan( &(aData[ nRow ][nCol - 1 ]));
        }
        xData->setRowDescriptions( aCategories );
        xData->setData( aData );
    }
}

// ----------------------------------------

void SchXMLTableHelper::applyTable(
    const SchXMLTable& rTable,
    const tSchXMLLSequencesPerIndex & rLSequencesPerIndex,
    uno::Reference< chart2::XChartDocument > xChartDoc )
{
    if( ! (xChartDoc.is() && xChartDoc->hasInternalDataProvider()))
        return;
    Reference< chart2::data::XDataProvider >  xDataProv( xChartDoc->getDataProvider());
    Reference< chart::XChartDataArray > xDataArray( xDataProv, uno::UNO_QUERY );
    if( ! xDataArray.is())
        return;
    OSL_ASSERT( xDataProv.is());
    Reference< chart2::XDiagram > xDiagram( xChartDoc->getFirstDiagram());
    if( ! xDiagram.is())
        return;

    // prerequisite for this method: all objects (data series, domains, etc.)
    // need their own range string.

    // If the range-strings are valid (starting with "local-table") they should
    // be interpreted like given, otherwise (when the ranges refer to Calc- or
    // Writer-ranges, but the container is not available like when pasting a
    // chart from Calc to Impress) the range is ignored, and every object gets
    // one table column in the order of appearance, which is: 1. categories,
    // 2. data series: 2.a) domains, 2.b) values (main-role, usually y-values)

    // apply all data read in the table to the chart data-array of the internal
    // data provider
    lcl_applyXMLTableToInternalDataprovider( rTable, xDataArray );

    bool bCategoriesApplied = false;
    // apply the data to the objects that have been parsed and marked for
    // getting the new data in ther rLSequencesPerIndex map.
    for( tSchXMLLSequencesPerIndex::const_iterator aIt( rLSequencesPerIndex.begin());
         aIt != rLSequencesPerIndex.end(); ++aIt )
    {
        if( aIt->second.is())
        {
            if( aIt->first.second == SCH_XML_PART_VALUES )
            {
                if( aIt->first.first == SCH_XML_CATEGORIES_INDEX )
                {
                    Reference< beans::XPropertySet > xOldSequenceProp( aIt->second->getValues(), uno::UNO_QUERY );
                    Reference< chart2::data::XDataSequence > xNewSequence(
                        xDataProv->createDataSequenceByRangeRepresentation(
                            OUString(RTL_CONSTASCII_USTRINGPARAM("categories"))));
                    lcl_copyProperties(
                        xOldSequenceProp, Reference< beans::XPropertySet >( xNewSequence, uno::UNO_QUERY ));
                    aIt->second->setValues( xNewSequence );
                    bCategoriesApplied = true;
                }
                else
                {
                    Reference< beans::XPropertySet > xOldSequenceProp( aIt->second->getValues(), uno::UNO_QUERY );
                    OUString aRep( OUString::valueOf( aIt->first.first ));
                    Reference< chart2::data::XDataSequence > xNewSequence(
                        xDataProv->createDataSequenceByRangeRepresentation( aRep ));
                    lcl_copyProperties(
                        xOldSequenceProp, Reference< beans::XPropertySet >( xNewSequence, uno::UNO_QUERY ));
                    aIt->second->setValues( xNewSequence );
                }
            }
            else
            {
                Reference< beans::XPropertySet > xOldSequenceProp( aIt->second->getLabel(), uno::UNO_QUERY );
                OSL_ASSERT( aIt->first.second == SCH_XML_PART_LABEL );
                // index -1 is for categories => shouldn't have a label
                OSL_ASSERT( aIt->first.first >= 0 );
                OUString aRep( RTL_CONSTASCII_USTRINGPARAM("label "));
                aRep += OUString::valueOf( aIt->first.first );

                Reference< chart2::data::XDataSequence > xNewSequence(
                    xDataProv->createDataSequenceByRangeRepresentation( aRep ));
                lcl_copyProperties(
                    xOldSequenceProp, Reference< beans::XPropertySet >( xNewSequence, uno::UNO_QUERY ));
                aIt->second->setLabel( xNewSequence );
            }
        }
    }

    // there exist files with own data without a categories element but with row
    // descriptions.  The row descriptions were used as categories even without
    // the categories element
    if( ! bCategoriesApplied )
    {
        SchXMLTools::CreateCategories(
            xDataProv, xChartDoc, OUString(RTL_CONSTASCII_USTRINGPARAM("categories")),
            0 /* nCooSysIndex */, 0 /* nDimension */ );
    }
}