Bug 145482 data item's display is the same as a label
After selecting a result set column for a data item, the result set column name is used to show the data item in layout editor. It will be better to show the data item as "[" + the result set column name + "]" so that it is different from a label.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/editparts/DataEditPart.java
{
	private static final String FIGURE_DEFAULT_TEXT = Messages.getString( "DataEditPart.Figure.Dafault" ); 
	/**
	 * Constructor
	 * 
	 * @param model
	 */
	public DataEditPart( Object model )
	{
		super( model );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.gef.editparts.AbstractGraphicalEditPart#createFigure()
	 */
	protected IFigure createFigure( )
	{
		LabelFigure label = new LabelFigure( );
		label.setLayoutManager( new StackLayout( ) );
		return label;
	}
	/**
	 * Popup the builder for Data element