selectedList.removeAll( ); for ( Iterator iter = choiceList.iterator( ); iter.hasNext( ); ) { selectedList.add( (String) iter.next( ) ); }
	protected boolean initDialog( )	{		try		{			engine = DataEngine.newDataEngine( DataEngineContext.newInstance( DataEngineContext.DIRECT_PRESENTATION,					null,					null,					null ) );		}		catch ( BirtException e )		{			ExceptionHandler.handle( e );			return false;		}		dataSetChooser.setItems( ChoiceSetFactory.getDataSets( ) );		dataSetChooser.select( 0 );		currentDataSetName = dataSetChooser.getText( );		refreshColumns( );		return true;	}