if ( event.type == CustomPreviewTable.MOUSE_RIGHT_CLICK_TYPE )
if ( event.widget instanceof Button )
	public void handleEvent( Event event )	{		if ( getDataServiceProvider( ).getBoundDataSet( ) != null				|| getDataServiceProvider( ).getReportDataSet( ) != null )		{			if ( event.type == CustomPreviewTable.MOUSE_RIGHT_CLICK_TYPE )			{				createMenu( ).setVisible( true );			}			else if ( event.type == CustomPreviewTable.FOCUS_IN )			{				if ( event.widget instanceof Button						&& ( (Button) event.widget ).getMenu( ) == null )				{					( (Button) event.widget ).setMenu( createMenu( ) );				}			}		}	}