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
url = new URL( CrosstabPlugin.getDefault( )
					.getBundle( )
					.getEntry( "/" ), sPluginRelativePath ); 
		}
		catch ( MalformedURLException e )
		{
		}
		return url;
	}
	/**
	 * This is a convenience method to get an imgIcon from a URL.
	 * 
	 * @param sPluginRelativePath
	 *            The URL for the imgIcon.
	 * @return The imgIcon represented by the given URL.
	 * @see #setImageCached( boolean )
	 */
	public static Image getImage( String sPluginRelativePath )
	{
		ImageRegistry registry = JFaceResources.getImageRegistry( );
		Image image = registry.get( sPluginRelativePath );
		if ( image == null )
		{
			image = createImage( sPluginRelativePath );
			registry.put( sPluginRelativePath, image );
		}
		return image;
	}
}