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
WrappedStructureSource wss = (WrappedStructureSource) src;
			while ( wss != null )
			{
				if ( wss.getType( ) == type )
				{
					return wss.getSource( );
				}
				if ( wss.getParent( ).getType( ) == type )
				{
					return wss.getParent( ).getSource( );
				}
				if ( wss.getParent( ) instanceof WrappedStructureSource )
					wss = (WrappedStructureSource) wss.getParent( );
				else
					wss = null;
			}
		}
		else if ( src.getType( ) == type )
			return src.getSource( );
		return null;
	}
	/**
	 * Locates a category design-time series corresponding to a given cloned run-time
	 * series.
	 * 
	 * @param seDT runtime Series
	 * @return category Series
	 */
	private Series findCategorySeries( Series seDT )
	{