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/model/CrosstabHandleAdapter.java
}
				int tempPosition = temp.intValue( ) >= measureCount? temp.intValue( ):measureCount;
				int column = tempPosition - ( measureCount - position ) + 1;
				
				levelViewHandle = cell
						.getLevelView( getWorkArea( ICrosstabConstants.ROW_AXIS_TYPE ) );
				if ( levelViewHandle == null )
				{
					temp = (Integer) map.get( getWorkArea( ROWAREA_ROW ) );
				}
				else
				{
					temp = (Integer) map.get( levelViewHandle );
				}
				if ( temp == null )
				{
					throw new RuntimeException( "build error" );
				}
				int row = temp.intValue( );
				
				CrosstabCellAdapter aggregationCell = factory
						.createCrosstabCellAdapter(
								ICrosstabCellAdapterFactory.CELL_MEASURE_AGGREGATION,
								cell, row, 1, column, 1, isVertical( ) );
				retValue.add( aggregationCell );
			}
		}
		if ( retValue.isEmpty( ) )
		{
			CrosstabCellAdapter first = factory.createCrosstabCellAdapter(