Bug 132645 Mouse Double Click/URL Redirect on Y series of Line Chart does not work
Decription: Add a interactivity on line chart, mouse double click/URL Redirect on Y Series, does not work. Steps to reproduce: 1.Add a line chart, bind with valid dataset. 2.In the "Format Chart" tab, add a interactivity on "Value(Y) Series", the type is "Mouse Double Click", and the action is set "URL Redirect". 3.Preview in layout, click on the Y Series, interactivity does not work.
chart/org.eclipse.birt.chart.device.extension/src/org/eclipse/birt/chart/device/image/JavaxImageIOWriter.java
{
			_img.flush( );
			_img = null;
		}
		
		_g2d.dispose( );
		_g2d = null;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.device.IDeviceRenderer#setProperty(java.lang.String,
	 *      java.lang.Object)
	 */
	public void setProperty( String sProperty, Object oValue )
	{
		super.setProperty( sProperty, oValue );
		if ( sProperty.equals( IDeviceRenderer.EXPECTED_BOUNDS ) )
		{
			_bo = (Bounds) oValue;
		}
		else if ( sProperty.equals( IDeviceRenderer.CACHED_IMAGE ) )
		{
			_img = (Image) oValue;
		}
		else if ( sProperty.equals( IDeviceRenderer.FILE_IDENTIFIER ) )
		{
			_oOutputIdentifier = oValue;
		}
		else if ( sProperty.equals( IDeviceRenderer.CACHE_ON_DISK ) )