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.device.swt/src/org/eclipse/birt/chart/device/swt/SwtRendererImpl.java
jc.removeMouseListener( _eh );
					jc.removeMouseMoveListener( _eh );
					jc.removeMouseTrackListener( _eh );
					jc.removeKeyListener( _eh );
					_eh.dispose( );
				}
				_eh = new SwtEventHandler( _lhmAllTriggers, _iun, getULocale( ) );
				jc.addMouseListener( _eh );
				jc.addMouseMoveListener( _eh );
				jc.addMouseTrackListener( _eh );
				jc.addKeyListener( _eh );
			}
		}
		else if ( sProperty.equals( IDeviceRenderer.GRAPHICS_CONTEXT ) )
		{
			_gc = (GC) oValue;
			if ( R31Enhance.isR31Available( ) )
			{
				Region rg = new Region( );
				_gc.getClipping( rg );
				R31Enhance.setAdvanced( _gc, true, rg );
				R31Enhance.setAntialias( _gc, SWT.ON );
				R31Enhance.setTextAntialias( _gc, SWT.ON );
				rg.dispose( );
			}
			logger.log( ILogger.INFORMATION,
					Messages.getString( "SwtRendererImpl.info.graphics.context",
							new Object[]{
									_gc.getClass( ).getName( ), _gc