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/editors/editparts/CrosstabCellEditPart.java
installEditPolicy( EditPolicy.COMPONENT_ROLE,
				new ReportComponentEditPolicy( ) 
		{
			protected org.eclipse.gef.commands.Command createDeleteCommand(
					GroupRequest deleteRequest )
			{
				return UnexecutableCommand.INSTANCE;
			}
		}
		);
		installEditPolicy( EditPolicy.LAYOUT_ROLE,
				new CrosstabCellFlowLayoutEditPolicy( ) );
		installEditPolicy( EditPolicy.CONTAINER_ROLE,
				new CrosstabCellContainerEditPolicy( ) );
		
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.designer.internal.ui.editors.schematic.editparts.ReportElementEditPart#refreshFigure()
	 */
	
	public void refreshFigure( )
	{
		CellBorder cborder = new CellBorder( );
		if ( getFigure( ).getBorder( ) instanceof CellBorder )
		{
			cborder.setBorderInsets( ( (CellBorder) getFigure( ).getBorder( ) ).getBorderInsets( ) );
		}
		refreshBorder( getCrosstabCellAdapter( ).getDesignElementHandle( ),