flex自定義自帶下拉查詢功能的textinput

自己寫了乙個不是太完美的自帶下拉查詢功能結果的textinput

先看看，執行截圖：

一共三個類：自定義的textinput類，自定義event類，外部呼叫類

自定義的textinput類:

package components

return item.tolowercase().search(str) != -1;
}		private function textchangehandler():void
}private function showorhide():void
list.selectedindex = 0;
}else
}}		
override protected function createchildren():void
list.showscrolltips = true;
list.showdatatips = true;
list.dataprovider = dataprovider;
list.setstyle("dropshadowenabled", true);
list.addeventlistener(listevent.item_click, selectitem);
showorhide();
systemmanager.addeventlistener(event.resize, removepopup, false, 0, true);
}		override protected function updatedisplaylist(unscaledwidth:number, unscaledheight:number):void
override protected function measure():void 
private function textinput_keydownhandler(event:keyboardevent):void
else
textinput.setselection(0, textinput.text.length);
break;
case keyboard.up:
if (islistvisible && list.selectedindex > 0)
textinput.setselection(0, textinput.text.length);
textinput.text.length); // select nothing
break;
case keyboard.enter:
if (islistvisible) selectitem();
break;
case keyboard.escape:
if (islistvisible) removepopup();
break;
}}		
private function textinput_changehandler(event:event):void
private function list_mousedownoutsidehandler(event:mouseevent):void
private function selectitem(event:listevent = null):void
else
text = textinput.text;
dispatchevent(new searchboxevent(searchboxevent.item_selected, list.selecteditem));	
removepopup();
}		public function get selecteditem():object
return list.selecteditem;
}		private function popup():void
private function removepopup(event:event=null):void
private function closehandler(event:mouseevent):void
public function get dataprovider():object
public function set dataprovider(dp:object):void
public function get text():string
public function set text(value:string):void
public function get labelfield():string
public function set labelfield(value:string):void}}

package components

}}

<?xml version="1.0" encoding="utf-8"?>

xmlns:s="library:" 
xmlns:mx="library:" xmlns:components="components.*">@namespace s "library:";
@namespace mx "library:";
@namespace local "*";
s|label 			

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