bool QgsDataDefined::setFromXmlElement( const QDomElement &element )
{
if ( element.isNull() )
{
return false;
}
mActive = element.attribute( "active" ).compare( "true", Qt::CaseInsensitive ) == 0;
mUseExpression = element.attribute( "useExpr" ).compare( "true", Qt::CaseInsensitive ) == 0;
mField = element.attribute( "field" );
setExpressionString( element.attribute( "expr" ) );
return true;
}
bool QgsProperty::convertToTransformer()
{
if ( d->type != ExpressionBasedProperty )
return false;
if ( d->transformer )
return false; // already a transformer
QString baseExpression;
QString fieldName;
std::unique_ptr< QgsPropertyTransformer > transformer( QgsPropertyTransformer::fromExpression( d->expressionString, baseExpression, fieldName ) );
if ( !transformer )
return false;
d.detach();
d->transformer = transformer.release();
if ( !fieldName.isEmpty() )
setField( fieldName );
else
setExpressionString( baseExpression );
return true;
}
void ExprShortEdit::expressionApplied() { setExpressionString(_dialog->getExpressionString()); }
