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/CrosstabCellAdapter.java
for ( int i = 0; i < list.size( ); i++ )
		{
			if ( list.get( i ) instanceof DataItemHandle )
			{
				return (DataItemHandle) list.get( i );
			}
		}
		return null;
	}
	public PropertyHandle getPropertyHandle( )
	{
		if ( getCrosstabCellHandle( ) != null )
		{
			DesignElementHandle handle = getCrosstabCellHandle( ).getModelHandle( );
			return handle.getPropertyHandle( getDefaultContentName( handle ) );
		}
		return null;
	}
	public String getDefaultContentName( DesignElementHandle parent )
	{
		List propDefns = ( (DesignElementHandle) parent ).getDefn( )
				.getContents( );
		if ( !propDefns.isEmpty( ) )
		{
			return ( (IPropertyDefn) propDefns.get( 0 ) ).getName( );
		}
		return "";
	}
}