Bug 137142 Type in chart interactivity doesn't work.
Description: Type in chart interactivity doesn't work. Steps to reproduce 1. Insert a chart. 2. Set Title interactivity or other interactivity, set type to Mouse click, set Action Show Tooltip. 3. Preview. Expected result: When click mouse, tooltip shows. Actual result: When mouse moved over, tooltip showed.
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/SVGInteractiveRenderer.java
* 
	 * @param pre
	 *            primitive render event
	 * @param drawText
	 *            TODO
	 */
	protected void groupPrimitive( PrimitiveRenderEvent pre, boolean drawText )
	{
		if ( _iun == null )
		{
			logger.log( ILogger.WARNING,
					Messages.getString( "exception.missing.component.interaction", getULocale( ) ) ); 
			return;
		}
	
		
		if ( pre.getSource( ) instanceof StructureSource )
		{
			Series seDT = (Series) getElementFromSource( (StructureSource)pre.getSource( ), StructureType.SERIES );
			if ( seDT != null )
			{
				String groupIdentifier = null;
				try
				{
					
					if ( isColoredByCategories( )
							&& getElementFromSource( (StructureSource) pre.getSource( ),
									StructureType.SERIES_DATA_POINT ) != null )
					{
						seDT = findCategorySeries( seDT );