Bug 182000 Cross tab layout behavior
In the current approach of cross tab layout view, the arrow is associated with the first data item in the cell. - User cannot delete measure and level data items which have arrow with them. -Wenbin has concerns with the approach, as this will make the UI very restrictive. - Also user may want to delete data item and just show image in a cross tab cell. We had a discussion with Bang, and he has revised the mockups for the layout - The idea is that the arrow is associated with the cross tab cell and not data item. Let us know if there are any issues with supporting this.
xtab/org.eclipse.birt.report.item.crosstab.ui/src/org/eclipse/birt/report/item/crosstab/internal/ui/util/CrosstabUIHelper.java
{
	public static String CROSSTAB_IMAGE = "icons/pal/crosstab.gif";
	public static String MEASURE_IMAGE = "icons/pal/data.gif";
	public static String COLUMNS_AREA_IMAGE = "icons/pal/column-area.gif";
	public static String ROWS_AREA_IMAGE = "icons/pal/row-area.gif";
	public static String DETAIL_AREA_IMAGE = "icons/pal/detail-area.gif";
	public static String LEVEL_IMAGE = "icons/pal/level.gif";
	public static String CELL_IMAGE = "icons/pal/cell.gif";
	public static String DETAIL_IMAGE = "icons/pal/details.gif";
	public static String HEADER_IMAGE = "icons/pal/header.gif";
	public static String AGGREGATION_IMAGE = "icons/pal/aggregation.gif";
	public static String LEVEL_AGGREGATION = "icons/pal/cell-level-aggregation.gif";
	public static String SHOW_HIDE_LECEL = "icons/pal/show-hide-level.gif";
	private static Image createImage( String sPluginRelativePath )
	{
		Image img = null;
		try
		{
			try
			{
				img = new Image( Display.getCurrent( ),
						getURL( sPluginRelativePath ).openStream( ) );
			}
			catch ( MalformedURLException e1 )
			{
				img = new Image( Display.getCurrent( ),