Bug 214254 Expose Javascript "event" object for interactivity
When doing interactivity with a chart, and specifying a Mouse Click event with an Invoke Script action, the browser event object should be passed into the script. This object should be named "evt", and accompany the other standard category and value series parameters.
chart/org.eclipse.birt.chart.device.extension/src/org/eclipse/birt/chart/device/image/JavaxImageIOWriter.java
pitr.next( );
		}
		if ( al.size( ) == 0 )
		{
			return null;
		}
		StringBuffer sb = new StringBuffer( );
		for ( int i = 0; i < al.size( ); i++ )
		{
			Double db = (Double) al.get( i );
			if ( i > 0 )
			{
				sb.append( "," ); 
			}
			sb.append( (int) db.doubleValue( ) );
		}
		return sb.toString( );
	}
	private boolean checkSupportedAction( Action action )
	{
		return ( action != null && ( action.getType( ) == ActionType.URL_REDIRECT_LITERAL
				|| action.getType( ) == ActionType.SHOW_TOOLTIP_LITERAL || action.getType( ) == ActionType.INVOKE_SCRIPT_LITERAL ) );
	}
	/**
	 * Returns if the given format type or MIME type is supported by the
	 * registered JavaxImageIO writers.
	 * 
	 * @return
	 */
	protected boolean isSupportedByJavaxImageIO( )