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/CrosstabCellFlowLayoutEditPolicy.java
ReportFlowLayoutEditPolicy
{
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.designer.internal.ui.editors.schematic.editpolicies.ReportFlowLayoutEditPolicy#getCreateCommand(org.eclipse.gef.requests.CreateRequest)
	 */
	protected Command getCreateCommand( CreateRequest request )
	{
		EditPart after = getInsertionReference( request );
		
		Object model = this.getHost( ).getModel( );
		Object newObject = request.getExtendedData( )
				.get( DesignerConstants.KEY_NEWOBJECT );
		if ( model instanceof CrosstabCellAdapter )
		{
			
			
			int type = getAreaType( (CrosstabCellAdapter) model );
			String position = ( (CrosstabCellAdapter) model ).getPositionType( );
			if ( (newObject instanceof DimensionHandle || newObject instanceof LevelHandle) 
					&& ( type == ICrosstabConstants.COLUMN_AXIS_TYPE || type == ICrosstabConstants.ROW_AXIS_TYPE ) )
			{
				Object afterObj = null;
				if (after instanceof FirstLevelHandleDataItemEditPart )
				{
					afterObj = after.getModel( );
				}