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.ui.extension/src/org/eclipse/birt/chart/ui/swt/wizard/TaskSelectData.java
gridData.heightHint = 200;
			cmpPreview.setLayoutData( gridData );
		}
		Label label = new Label( cmpPreview, SWT.NONE );
		{
			label.setFont( JFaceResources.getBannerFont( ) );
			label.setText( Messages.getString( "TaskSelectData.Label.ChartPreview" ) ); 
		}
		previewCanvas = new Canvas( cmpPreview, SWT.BORDER );
		{
			GridData gd = new GridData( GridData.FILL_BOTH );
			previewCanvas.setLayoutData( gd );
			previewCanvas.setBackground( Display.getDefault( )
					.getSystemColor( SWT.COLOR_WHITE ) );
		}
	}
	private void createDataSetArea( Composite parent )
	{
		Composite cmpDataSet = ChartUIUtil.createCompositeWrapper( parent );
		{
			cmpDataSet.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		}
		Label label = new Label( cmpDataSet, SWT.NONE );
		{
			label.setText( Messages.getString( "TaskSelectData.Label.SelectDataSet" ) ); 
			label.setFont( JFaceResources.getBannerFont( ) );
		}
		Composite cmpDetail = new Composite( cmpDataSet, SWT.NONE );
		{
			GridLayout gridLayout = new GridLayout( 3, false );