actionscript 3 - set focus in button when open popup in flex -

i'm having problem set focus on button open popup. button gets focus, not appearance focu. if no component focu.

my source code:

<?xml version="1.0" encoding="utf-8"?> <s:application xmlns:fx="http://ns.adobe.com/mxml/2009"             xmlns:s="library://ns.adobe.com/flex/spark"             xmlns:mx="library://ns.adobe.com/flex/mx"             minwidth="955" minheight="600">   <fx:script>     <![cdata[         import comps.mypopupwindow;          import mx.events.flexevent;         import mx.managers.popupmanager;          // declare variable reusable custom popup window         private var popup:mypopupwindow;          private function openpopupwindow(evt:flexevent=null):void {             // open popup window modal popup window             // , store in variable later use             popup = popupmanager.createpopup(this,mypopupwindow,true)  mypopupwindow;         }          protected function button1_clickhandler(event:mouseevent):void         {             openpopupwindow();         }      ]]> </fx:script>  <s:button click="button1_clickhandler(event)" label="open popup"/>   </s:application> 

the popup:

<mx:titlewindow xmlns:fx="http://ns.adobe.com/mxml/2009"              xmlns:s="library://ns.adobe.com/flex/spark"              xmlns:mx="library://ns.adobe.com/flex/mx"              width="400" height="300"             layout="vertical"             title="title"             showclosebutton="true"                                                                       keydown="titlewindow1_keydownhandler(event)"             close="titlewindow1_closehandler(event)"   creationcomplete="titlewindow1_creationcompletehandler(event)">         <fx:script>     <![cdata[         import mx.controls.alert;         import mx.core.iflexdisplayobject;         import mx.events.closeevent;         import mx.events.flexevent;         import mx.managers.ifocusmanagercomponent;         import mx.managers.popupmanager;  protected function titlewindow1_creationcompletehandler(event:flexevent):void         {             login.setfocus();                                        var componente:button = focusmanager.getfocus() button; //alert.show(componente.name ,'save'); ensure component holds focu.                              }             protected function titlewindow1_keydownhandler(event:keyboardevent):void         { if (event.charcode == keyboard.escape) {         this.dispatchevent(new closeevent(closeevent.close));             }         }          protected function titlewindow1_closehandler(event:closeevent):void         {         popupmanager.removepopup(event.target iflexdisplayobject);         }           protected function save_keydownhandler(event:keyboardevent):void         {             if (event.keycode == keyboard.enter)                  alert.show('login','login');                     }          protected function login_clickhandler(event:mouseevent):void         {             alert.show('login','login');                     }            ]]> </fx:script>       <mx:button id="login" label="login"     click="login_clickhandler(event)"/>  <mx:button id="cancel" label="cancel" />              </mx:titlewindow> 

thanks.

better manually dispatch event on particular button. http://help.adobe.com/en_us/flex/4.0/usingsdk/ws2db454920e96a9e51e63e3d11c0bf69084-7ce1.html