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
*/
	protected IFigure createFigure( )
	{
		CellFigure figure = new CrosstabCellFigure( );
		ReportFlowLayout rflayout = new ReportFlowLayout( );
		figure.setLayoutManager( rflayout );
		figure.setOpaque( false );
		return figure;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.gef.EditPart#getDragTracker(org.eclipse.gef.Request)
	 */
	public DragTracker getDragTracker( Request req )
	{
		return new CellDragTracker( this );
	}
	/**
	 * @return
	 */
	protected CrosstabCellAdapter getCrosstabCellAdapter( )
	{
		return (CrosstabCellAdapter) getModel( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.designer.internal.ui.layout.ITableLayoutCell#getColSpan()
	 */