Bug 193828 message should not be popped when adding group level to cross tab
In a cross tab click on an aggregation type data cell and select 'show/hide Group Levels'. If I want to add a level, A message dialog pops up. Expected: No message dialog should pop up when adding a level. The dialog should appear only when a level in unchecked.
xtab/org.eclipse.birt.report.item.crosstab.ui/src/org/eclipse/birt/report/item/crosstab/internal/ui/editors/action/AddLevelHandleAction.java
for (int i=0; i<viewCount; i++)
			{
				LevelViewHandle levelHandle = viewHandle.getLevel( i );
				if (levelHandle.getCubeLevel( ) == null)
				{
					nullLevelHandle.add( new Integer(levelHandle.getIndex( )));
				}
				else
				{
					showLevels.add( levelHandle.getCubeLevel( ) );
				}
			}
			dialog.setInput( viewHandle.getCubeDimension( ), showLevels );
			if ( dialog.open( ) == Window.OK )
			{
				CrosstabReportItemHandle reportHandle = viewHandle.getCrosstab( );
				List result = (List)dialog.getResult( );
				processor( showLevels, result, nullLevelHandle );
				CrosstabAdaptUtil.processInvaildBindings( reportHandle );
			}
		}
		catch ( SemanticException e )
		{
			rollBack( );
			ExceptionHandler.handle( e );
			return;
		}
		transEnd( );
	}