construct tab properti panel tab tab todo item set icon left arrow icon posit configur configur make kei layout tabtodo set orient posit equal west posit equal east vertic instanc horizont instanc set layout border layout object action action item action resolv action snooz tool bar factori factori tool bar factori action factori set rollov factori set floatabl factori set orient swing constant vertic tool bar tool bar factori creat tool bar tool bar set titl add tool bar border layout west split pane border split pane add split pane border layout center set target add compon listen todo regist listen target item chang step request 