flex datagrid拖拽不同类型数据过滤

数据源表格有2中类型的数据，需要拖入相对于类型的表格。

<?xml version="1.0" encoding="utf-8"?><mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" minWidth="955" minHeight="800" creationComplete="init();"><mx:Script><!--[CDATA[import mx.collections.ArrayCollection;import mx.controls.Alert;import mx.events.DragEvent;//初始化数据private function init():void{var personArrayList:ArrayCollection = new ArrayCollection();var infoData1:Object={personid:'1', name:'张三', tel:'13002300326',type:"person"};var infoData2:Object={personid:'2', name:'王五', tel:'13663236985',type:"person"};var infoData3:Object={personid:'3', name:'渝A5698', tel:'13654698546',type:"car"};var infoData4:Object={personid:'4', name:'李四', tel:'13256985456',type:"person"};var infoData5:Object={personid:'5', name:'渝A2698', tel:'13256985456',type:"car"};personArrayList.addItem(infoData1);personArrayList.addItem(infoData2);personArrayList.addItem(infoData3);personArrayList.addItem(infoData4);personArrayList.addItem(infoData5);personList.dataProvider = personArrayList;}[Bindable]private var personlist:ArrayCollection = new ArrayCollection();[Bindable]private var carlist:ArrayCollection = new ArrayCollection();//添加类型为人员的到表格protected function addPersonList_dragDropHandler(event:DragEvent):void{var array:Array = event.dragSource.dataForFormat("items") as Array;for each(var infodata:Object in array){//如果拖拽对象的type为车辆就不允许添加到表格if(infodata.type == 'car'){event.preventDefault();}}}//添加类型为车辆的到表格protected function addCarList_dragDropHandler(event:DragEvent):void{var array:Array = event.dragSource.dataForFormat("items") as Array;for each(var infodata:Object in array){//如果拖拽对象的type为人员就不允许添加到表格if(infodata.type == 'person'){event.preventDefault();}}}]]--></mx:Script><mx:VBox x="22" y="10" width="100%" height="100%"><!--数据源表格--><mx:DataGrid width="500" height="200" id="personList" fontSize="14" dragEnabled="true" dropEnabled="true"><mx:columns><mx:DataGridColumn headerText="personid" dataField="personid"/><mx:DataGridColumn headerText="姓名" dataField="name"/><mx:DataGridColumn headerText="电话" dataField="tel"/><mx:DataGridColumn headerText="类型" dataField="type"/><mx:DataGridColumn headerText="操作" dataField="op"/></mx:columns></mx:DataGrid><!--人员表格--><mx:DataGrid width="500" height="200" id="addPersonList" dataProvider="{personlist}" dragDrop="addPersonList_dragDropHandler(event)" fontSize="14" dragMoveEnabled="true" dragEnabled="true" dropEnabled="true"><mx:columns><mx:DataGridColumn headerText="personid" dataField="personid" /><mx:DataGridColumn headerText="姓名" dataField="name"/><mx:DataGridColumn headerText="电话" dataField="tel"/><mx:DataGridColumn headerText="类型" dataField="type"/><mx:DataGridColumn headerText="操作" dataField="op"/></mx:columns></mx:DataGrid><!--车辆表格--><mx:DataGrid width="500" height="200" id="addCarList" dataProvider="{carlist}" dragDrop="addCarList_dragDropHandler(event)" fontSize="14" dragMoveEnabled="true" dragEnabled="true" dropEnabled="true"><mx:columns><mx:DataGridColumn headerText="personid" dataField="personid"/><mx:DataGridColumn headerText="车辆名称" dataField="name"/><mx:DataGridColumn headerText="电话" dataField="tel"/><mx:DataGridColumn headerText="类型" dataField="type"/><mx:DataGridColumn headerText="操作" dataField="op"/></mx:columns></mx:DataGrid></mx:VBox></mx:Application>