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>