/*!
\brief Update the widget
\param widget Usually a QwtLegendLabel
\param data Attributes to be displayed
\sa createWidget()
\note When widget is no QwtLegendLabel updateWidget() does nothing.
*/
void QwtLegend::updateWidget( QWidget *widget, const QwtLegendData &data )
{
QwtLegendLabel *label = qobject_cast<QwtLegendLabel *>( widget );
if ( label )
{
label->setData( data );
if ( !data.value( QwtLegendData::ModeRole ).isValid() )
{
// use the default mode, when there is no specific
// hint from the legend data
label->setItemMode( defaultItemMode() );
}
}
}
