if ( oldValue != null && oldValue.equals( newValue ) ) { save( null ); }
	private void handleSelectedEvent( String newValue )	{		if ( "".equals( newValue ) )//$NON-NLS-1$		{			newValue = null;		}		try		{			save( newValue );			text.setText( DEUtil.resolveNull( newValue ) );		}		catch ( SemanticException e )		{			text.setText( DEUtil.resolveNull( oldValue ) );			WidgetUtil.processError( text.getShell( ), e );		}	}