flex 3 combobox 实现关键字过滤搜索-代码示例

<?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" viewSourceURL="srcview/index.html" xmlns:myAs="myAs.*" xmlns:wayne="com.wayne.*">
?
?<fx:Script>
??<![CDATA[
???import mx.collections.ArrayCollection;
???import mx.controls.Alert;
???import mx.events.DropdownEvent;
???import mx.utils.StringUtil;
???public var intput_cards:Array= [];
???
???[Bindable]public var cards:Array =? 
????[ {label:"宋江",data:1},?????{label:"的李逵",data:2},?????{label:"卢俊义",data:3},?????{label:"的李逵2",data:4},?????{label:"的李逵3",data:5},?????{label:"的李逵4",data:6},?????{label:"陈江",data:7},?????{label:"卢子平",data:8},?????{label:"的李逵5",data:9},?????{label:"太子",data:10}
????];
???
????private function changeHandler2(event:Event):void {
????
????intput_cards = [];
????
????if(StringUtil.trim(combobox_id.text)==""||StringUtil.trim(combobox_id.text)==null){
????? combobox_id.dataProvider =? cards;
????}else{
?????for(var i:int = 0; i<cards.length; i++){
??????if(cards[i].label.indexOf(combobox_id.text,0)>-1){
???????intput_cards.push({label:cards[i].label,data:cards[i].data} );
??????}
?????}
?????combobox_id.dataProvider = intput_cards ; 
????}
????
????combobox_id.validateNow();
????
????combobox_id.open();
???
???}? 
???protected function linkbutton1_clickHandler(event:MouseEvent):void
???{
????// TODO Auto-generated method stub
????navigateToURL(new URLRequest("http://blog.csdn.net/kkkloveyou"),"_blank");
???}
??]]>
?</fx:Script>
?
?<s:Panel title="ComboBox Sample"? 
??? height="100%" width="100%">
??
??<s:VGroup top="20" horizontalCenter="0" >
???<s:VGroup>
????<s:Label? width="200" color="0x336699" text="Flex3 ComboBox Sample for search:"/>
????<mx:ComboBox? id="combobox_id" editable="true" dataProvider="{cards}"? change="changeHandler2(event);"? width="207"?? />
???</s:VGroup>
???<mx:Spacer? height="80"/>
??
???<mx:LinkButton color="red"? label="技术支持:http://blog.csdn.net/kkkloveyou"?? click="linkbutton1_clickHandler(event)"/>? 
??</s:VGroup> 
??
?</s:Panel>??? 
</s:Application>