Bug 197245 Interactivity in Gantt series doesn't work[13]
Description: Inconsistent behaviors occur when (Y) Series and Legend Interactivity [Series Color By: Value Series] Build number: 2.2.1.v20070720-0630 Steps: 1. Create a Gantt Chart, Set Color By: Value Series. 2. Set Interavtivity Event: Mouse Click, Action: Highlight at (Y) Series and Legend. 3. Preview and Click. (Y) Series and Legend. Expected result: (Y) Series change color. Actual result: Chart Area change color. Error log: N/A
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/BaseRenderer.java
tre.setBlockBounds( bo );
			tre.setBlockAlignment( null );
		}
		tre.setLabel( laDataPoint );
		tre.setAction( iTextRenderType );
		if ( _dc == null )
		{
			dc.addLabel( tre );
		}
		else
		{
			_dc.addLabel( tre );
		}
	}
	
	/**
	 * This method validates the given datapoints.
	 */
	protected void validateNullDatapoint( DataPointHints[] dphs )
			throws ChartException
	{
		if ( dphs == null )
		{
			throw new ChartException( ChartEnginePlugin.ID,
					ChartException.VALIDATION,
					"exception.base.orthogonal.null.datapoint", 
					Messages.getResourceBundle( rtc.getULocale( ) ) );
		}
	}
	/**