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
CacheEvent cEvent = ( (CacheEvent) iter.next( ) );
			addEventHandling( cEvent.getElement( ),
					cEvent.getSource( ),
					cEvent.getTriggers( ) );
		}
	}
	/**
	 * Add event handling to the hotspot
	 */
	private void addEventHandling( Element elm, StructureSource src,
			Trigger[] triggers )
	{
		if ( elm != null )
		{
			for ( int x = 0; x < triggers.length; x++ )
			{
				Trigger tg = triggers[x];
				String scriptEvent = getJsScriptEvent( tg.getCondition( )
						.getValue( ) );
				if ( scriptEvent != null )
				{
					switch ( tg.getAction( ).getType( ).getValue( ) )
					{
						case ActionType.SHOW_TOOLTIP :
							String tooltipText = ( (TooltipValue) tg.getAction( )
									.getValue( ) ).getText( );
							
							if ( ( tooltipText != null )
									&& ( tooltipText.trim( ).length( ) > 0 ) )
							{