Bug 198031 Legend interactivity does not work correctly for drill-throughs
Under Value (Y) Series enable interactivity for the event "Mouse Click" Set action to Hyperlink The type of the hyperlink is Drill-through and the target is the a sub-report Pass parameter to sub-report as row["value_of_the_legend_item"] Suppose there are 3 values, x,y and z No matter which legend item you click (x, y or z), z gets passed as param to the subreport
chart/org.eclipse.birt.chart.ui.extension/src/org/eclipse/birt/chart/ui/swt/composites/TriggerDataComposite.java
break;
			case INDEX_7_TOOGLE_DATAPOINT :
				this.slValues.topControl = cmpDPVisibility;
				break;
			default :
				this.slValues.topControl = cmpDefault;
				break;
		}
		grpValue.layout( );
	}
	public Trigger getTrigger( )
	{
		if ( cmbActionType.getSelectionIndex( ) == 0 )
		{
			return null;
		}
		ActionValue value = null;
		switch ( getTriggerIndex( ) )
		{
			case INDEX_1_URL_REDIRECT :
				value = URLValueImpl.create( sBaseURL, null,
						
						txtBaseParm.getText( ),
						txtValueParm.getText( ),
						txtSeriesParm.getText( ) );
				break;
			case INDEX_2_TOOLTIP :
				
				
				value = TooltipValueImpl.create( 200, "" );