conditionupdater.cxx

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 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#include <conditionupdater.hxx>
#include <reportformula.hxx>
 
#include <com/sun/star/report/XFormatCondition.hpp>
 
#include <comphelper/diagnose_ex.hxx>
 
 
namespace rptui
{
 
 
    using ::com::sun::star::beans::PropertyChangeEvent;
    using ::com::sun::star::uno::Reference;
    using ::com::sun::star::report::XReportControlModel;
    using ::com::sun::star::uno::UNO_QUERY;
    using ::com::sun::star::report::XFormatCondition;
    using ::com::sun::star::uno::UNO_QUERY_THROW;
    using ::com::sun::star::uno::Exception;
 
 
    //= ConditionUpdater
 
 
    ConditionUpdater::ConditionUpdater()
    {
    }
 
 
    ConditionUpdater::~ConditionUpdater()
    {
    }
 
 
    void ConditionUpdater::notifyPropertyChange( const PropertyChangeEvent& _rEvent )
    {
        impl_lateInit_nothrow();
 
        Reference< XReportControlModel > xRptControlModel( _rEvent.Source, UNO_QUERY );
        if ( xRptControlModel.is() && _rEvent.PropertyName == "DataField" )
        {
            OUString sOldDataSource, sNewDataSource;
            OSL_VERIFY( _rEvent.OldValue >>= sOldDataSource );
            OSL_VERIFY( _rEvent.NewValue >>= sNewDataSource );
            impl_adjustFormatConditions_nothrow( xRptControlModel, sOldDataSource, sNewDataSource );
        }
    }
 
 
    void ConditionUpdater::impl_lateInit_nothrow()
    {
        if ( !m_aConditionalExpressions.empty() )
            return;
 
        ConditionalExpressionFactory::getKnownConditionalExpressions( m_aConditionalExpressions );
    }
 
 
    void ConditionUpdater::impl_adjustFormatConditions_nothrow( const Reference< XReportControlModel >& _rxRptControlModel,
        const OUString& _rOldDataSource, const OUString& _rNewDataSource )
    {
        try
        {
            ReportFormula aOldContentFormula( _rOldDataSource );
            OUString sOldUnprefixed( aOldContentFormula.getBracketedFieldOrExpression() );
            ReportFormula aNewContentFormula( _rNewDataSource );
            OUString sNewUnprefixed( aNewContentFormula.getBracketedFieldOrExpression() );
 
            sal_Int32 nCount( _rxRptControlModel->getCount() );
            Reference< XFormatCondition > xFormatCondition;
            OUString sFormulaExpression, sLHS, sRHS;
            for ( sal_Int32 i=0; i<nCount; ++i )
            {
                xFormatCondition.set( _rxRptControlModel->getByIndex( i ), UNO_QUERY_THROW );
                sFormulaExpression = ReportFormula(xFormatCondition->getFormula()).getExpression();
 
                for (const auto& rEntry : m_aConditionalExpressions)
                {
                    if ( !rEntry.second->matchExpression( sFormulaExpression, sOldUnprefixed, sLHS, sRHS ) )
                        continue;
 
                    // the expression matches -> translate it to the new data source of the report control model
                    sFormulaExpression = rEntry.second->assembleExpression( sNewUnprefixed, sLHS, sRHS );
                    ReportFormula aFormula(ReportFormula(ReportFormula::Expression, sFormulaExpression));
                    xFormatCondition->setFormula(aFormula.getCompleteFormula());
                    break;
                }
            }
        }
        catch( const Exception& )
        {
            DBG_UNHANDLED_EXCEPTION("reportdesign");
        }
    }
 
 
} // namespace rptui
 
 
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