Bug 140620 Chart scripting errors are ignored
Write a chart with an invalid script, the execution simply ignores the script. This makes it difficult to debug scripting. The error message is also not precise and needs improvements.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/device/IDeviceRenderer.java
Object getGraphicsContext( );
	/**
	 * Returns an instance of the low level display server capable of providing
	 * text metrics, screen resolution, etc.
	 * 
	 * @return An instance of the low level display server capable of providing
	 *         text metrics, screen resolution, etc.
	 */
	IDisplayServer getDisplayServer( );
	/**
	 * Indicated to the caller if the device renderer needs additional structure
	 * definition callbacks to identify how primitives are to be grouped to
	 * possibly aid in client side event handling.
	 * 
	 * @return 'true' if structure definition notificates are required in the
	 *         device renderer implementation.
	 */
	boolean needsStructureDefinition( );
	/**
	 * A notification sent to the device to initialize itself before rendering
	 * begins
	 * 
	 * @throws RenderingException
	 */
	void before( ) throws ChartException;
	/**
	 * A notification sent to the device to cleanup after rendering is done
	 * 
	 * @throws RenderingException
	 */