开放原子开发者工作坊

Flex父子窗体相互调用

1、设计思路

（1）子窗体调用父窗体的方法

（2）子窗体做了改动后，返回父窗体，父窗体调用子窗体函数

2、设计源代码

（1）父窗体

ParentWindow.mxml：

<?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"
			   width="100%" height="100%">
	<s:layout>
		<s:BasicLayout/>
	</s:layout>
	<fx:Declarations>
		<!-- 将非可视元素（比如服务、值对象）放在此处 -->
	</fx:Declarations>
	
	<fx:Script>
		<![CDATA[
			import mx.collections.ArrayCollection;
			import mx.controls.Alert;
			import mx.managers.PopUpManager;
			
			[Bindable]
			//表格数据源绑定
			private var grid:ArrayCollection = new ArrayCollection([
				{number:"2014010101",name:"张散",sex:"男",age:"23"},
				{number:"2014010102",name:"李思",sex:"女",age:"22"},
				{number:"2014010101",name:"吴王",sex:"男",age:"21"},
				{number:"2014010101",name:"赵柳",sex:"女",age:"20"},
				{number:"2014010101",name:"游华",sex:"男",age:"22"},
				{number:"2014010101",name:"祝思",sex:"女",age:"18"},
				{number:"2014010101",name:"周礼",sex:"男",age:"19"},
				{number:"2014010101",name:"华捷",sex:"女",age:"20"},
				{number:"2014010101",name:"刘亮",sex:"男",age:"22"},
				{number:"2014010101",name:"沈雪",sex:"女",age:"21"}
			]);

			/*改动事件函数*/
			protected function updateHandler(event:MouseEvent):void
			{
				//新建子窗口对象
				var childWindow:ChildWindow = new ChildWindow();
				//将子窗口加入到PopUpManager中
				PopUpManager.addPopUp(childWindow,this,true);
				//向子窗口传递參数
				childWindow.age = "23";
				//子窗口调用父窗口函数
				childWindow.callBack = this.myFunction;
				//子窗口居中弹出
				PopUpManager.centerPopUp(childWindow);
			}
			
			/*刷新函数*/
			public function myFunction(you:String):void 
			{  
				Alert.show(you+"Hello");  
			} 

		]]>
	</fx:Script>
	<mx:VBox width="100%" height="100%" paddingBottom="10" paddingLeft="10" paddingRight="10" paddingTop="10">
		<mx:DataGrid id="dataGrid" dataProvider="{grid}" rowCount="{grid.length + 1}" width="100%" 
					 verticalAlign="middle" textAlign="center">
			<mx:columns>
				<mx:DataGridColumn headerText="学号" dataField="number"/>
				<mx:DataGridColumn headerText="姓名" dataField="name"/>
				<mx:DataGridColumn headerText="性别" dataField="sex"/>
				<mx:DataGridColumn headerText="年龄" dataField="age"/>
			</mx:columns>
		</mx:DataGrid>
		<mx:HBox width="100%" horizontalAlign="center" verticalAlign="middle">
			<s:Button label="改动" click="updateHandler(event)"/>
		</mx:HBox>
	</mx:VBox>
</s:Application>

（2）子窗体

ChildWindow.mxml：

<?xml version="1.0" encoding="utf-8"?>
<s:TitleWindow xmlns:fx="http://ns.adobe.com/mxml/2009" 
			   xmlns:s="library://ns.adobe.com/flex/spark" 
			   xmlns:mx="library://ns.adobe.com/flex/mx" width="300" height="220"
			   close="closeHandler(event)" title="改动窗体">
	<s:layout>
		<s:BasicLayout/>
	</s:layout>
	<fx:Script>
		<![CDATA[
			import mx.events.CloseEvent;
			import mx.managers.PopUpManager;
			
			//回调函数
			public var callBack:Function;
			
			public var age:String = "";

			/*关闭事件函数*/
			protected function closeHandler(event:CloseEvent):void
			{
				PopUpManager.removePopUp(this);
			}

			/*改动button事件函数*/
			protected function updateHandler(event:MouseEvent):void
			{
				stuAge.text = age;
			}
			
            /*取消button事件函数*/
			protected function cancelHandler(event:MouseEvent):void
			{
				number.text = "";
				stuName.text = "";
				PopUpManager.removePopUp(this);
				if(isPopUp)
				{
					callBack.call(parent);
				}
			}
		]]>
	</fx:Script>
	<fx:Declarations>
		<!-- 将非可视元素（比如服务、值对象）放在此处 -->
	</fx:Declarations>
	
	<mx:VBox width="100%" height="100%">
		<mx:Form>
			<mx:FormItem label="学号：">
				<s:TextInput id="number" width="200" maxChars="10"/>
			</mx:FormItem>
			<mx:FormItem label="姓名：">
				<s:TextInput id="stuName" width="200" maxChars="10"/>
			</mx:FormItem>
			<mx:FormItem label="性别：">
				<mx:HBox width="100%">
					<mx:RadioButtonGroup id="sex"/>
					<s:RadioButton groupName="sex" label="男" selected="true"/>
					<s:RadioButton groupName="sex" label="女"/>
				</mx:HBox>
			</mx:FormItem>
			<mx:FormItem label="年龄：">
				<s:TextInput id="stuAge" width="200" maxChars="2"/>
			</mx:FormItem>
			<mx:FormItem>
				<mx:HBox width="100%">
					<s:Button label="改动" click="updateHandler(event)"/>
					<s:Label width="42"/>
					<s:Button label="取消" click="cancelHandler(event)"/>
				</mx:HBox>
			</mx:FormItem>
		</mx:Form>
	</mx:VBox>
</s:TitleWindow>

3、设计结果

（1）初始化时

（2）单击改动button