Flex 父窗口监听子窗口关闭并刷新DataGrid

红太狼 2022-07-10 14:28 261阅读 0赞

1.父窗口

<?xml version="1.0" encoding="utf-8"?>
    <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
    	<mx:Script>
    		<![CDATA[
    			import mx.events.FlexEvent;
    			import mx.events.DragEvent;
    			import mx.events.ChildExistenceChangedEvent;
    			import mx.collections.ArrayCollection;
    			import mx.managers.PopUpManager;
    			import mx.controls.Alert;
    			import mx.events.CloseEvent;
    			
                [Bindable]
                public var initDG:ArrayCollection=new ArrayCollection([
                    {Artist:'Pavement', Album:'Slanted and Enchanted', Price:11.99},
                    {Artist:'Pavement', Album:'Brighten the Corners', Price:11.99}]);
                public function alertDiv():void
                {
                	var win:tanchu = new tanchu();
                	win=tanchu(PopUpManager.createPopUp(this,tanchu,true));
    	    		//win.data=seq;
    	    		//win.addEventListener(CloseEvent.CLOSE,addObject);
    	    		PopUpManager.centerPopUp(win);
    	    		win.addEventListener(MyEvent.SAVE_OK,addObject);
    	    		//this.systemManager.addEventListener(CloseEvent.CLOSE,addObject);
                }
                public function addObject(evt:MyEvent):void
                {
                	Alert.show("ok");
                	var obj:Object={Artist:'Pavement', Album:'Slanted and Enchanted', Price:11.99};
                	initDG.addItem(obj);
    //            	myGrid.invalidateList();
                	//myGrid.validateNow();
                }
    		]]>
    	</mx:Script>
    	<mx:VBox width="100%" height="100%" backgroundColor="white">
    		<mx:Button label="弹出窗口" click="alertDiv()"/>
    		<mx:DataGrid id="myGrid" width="350" height="200" dataProvider="{initDG}">
    			<mx:columns>
    				<mx:DataGridColumn dataField="Album"/>
    				<mx:DataGridColumn dataField="Price"/>
    			</mx:columns>
    		</mx:DataGrid>
    	</mx:VBox>
    </mx:Application>

2.子窗口

<?xml version="1.0" encoding="utf-8"?>
    <mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml" width="400" height="300">
    	<mx:Script>
    		<![CDATA[
    			import mx.managers.PopUpManager;
    			import mx.controls.Alert;
    			import mx.events.CloseEvent;
    			
    			public function closetanchu():void
    			{
    				var obj:Object={Artist:'Pavement', Album:'Slanted and Enchanted', Price:11.99};
    				//var showdd:showDataGrid=new showDataGrid();
    				//showdd.initDG.addItem(obj);
    				//showdd.addObject();
    				//Alert.show(showdd.initDG.length+"");
    				//this.dispatchEvent(new MyEvent(MyEvent.SAVE_OK,obj));
    				this.dispatchEvent(new MyEvent(MyEvent.SAVE_OK));
    				PopUpManager.removePopUp(this);
    				//dispatchEvent(new Event(CloseEvent.CLOSE));
    			}
    		]]>
    	</mx:Script>
    	<mx:Button label="欢迎" click="closetanchu()"/>
    </mx:Canvas>

3.自定义事件

package
    {
    	import flash.events.Event;
    	public class MyEvent extends Event
    	{
    		public static const SAVE_OK:String="saveOk";
    		private var _data:Object;
    		public function MyEvent(type:String,data:Object=null,bubbles:Boolean=false,
    			cancelable:Boolean=false)
    		{
    			this._data=data;
    			super(type,bubbles,cancelable);
    		}
    		public function get data():Object
    		{
    			return _data;
    		}
    		public function set data(value:Object):void
    		{
    			_data=value;
    		}
    	}
    }