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/editpolicies/CrosstabCellContainerEditPolicy.java
{
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.gef.editpolicies.ContainerEditPolicy#getOrphanChildrenCommand(org.eclipse.gef.requests.GroupRequest)
	 */
	public Command getOrphanChildrenCommand( GroupRequest request )
	{
		List parts = request.getEditParts( );
		int size = parts.size( );
		CompoundCommand result = new CompoundCommand( "Move in layout" );
		for ( int i = 0; i < size; i++ )