Flex父子窗體相互調用

Flex父子窗體相互調用

一、設計思路

（1）子窗體調用父窗體的方法

（2）子窗體作了改動後，返回父窗體，父窗體調用子窗體函數

二、設計源代碼

（1）父窗體

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>
		<!-- 將非可視元素（好比服務、值對象）放在此處 -->
	</fx:Declarations>
	
	<fx:Script>
		<![CDATA[
			import mx.collections.ArrayCollection;
			import mx.controls.Alert;
			import mx.managers.PopUpManager;
			
			[Bindable]
			//表格數據源綁定
			private var grid:ArrayCollection = new ArrayCollection([
				{number:"2014010101",name:"張散",sex:"男",age:"23"},
				{number:"2014010102",name:"李思",sex:"女",age:"22"},
				{number:"2014010101",name:"吳王",sex:"男",age:"21"},
				{number:"2014010101",name:"趙柳",sex:"女",age:"20"},
				{number:"2014010101",name:"遊華",sex:"男",age:"22"},
				{number:"2014010101",name:"祝思",sex:"女",age:"18"},
				{number:"2014010101",name:"周禮",sex:"男",age:"19"},
				{number:"2014010101",name:"華捷",sex:"女",age:"20"},
				{number:"2014010101",name:"劉亮",sex:"男",age:"22"},
				{number:"2014010101",name:"沈雪",sex:"女",age:"21"}
			]);

			/*改動事件函數*/
			protected function updateHandler(event:MouseEvent):void
			{
				//新建子窗口對象
				var childWindow:ChildWindow = new ChildWindow();
				//將子窗口加入到PopUpManager中
				PopUpManager.addPopUp(childWindow,this,true);
				//向子窗口傳遞參數
				childWindow.age = "23";
				//子窗口調用父窗口函數
				childWindow.callBack = this.myFunction;
				//子窗口居中彈出
				PopUpManager.centerPopUp(childWindow);
			}
			
			/*刷新函數*/
			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="學號" dataField="number"/>
				<mx:DataGridColumn headerText="姓名" dataField="name"/>
				<mx:DataGridColumn headerText="性別" dataField="sex"/>
				<mx:DataGridColumn headerText="年齡" dataField="age"/>
			</mx:columns>
		</mx:DataGrid>
		<mx:HBox width="100%" horizontalAlign="center" verticalAlign="middle">
			<s:Button label="改動" click="updateHandler(event)"/>
		</mx:HBox>
	</mx:VBox>
</s:Application>

（2）子窗體

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="改動窗體">
	<s:layout>
		<s:BasicLayout/>
	</s:layout>
	<fx:Script>
		<![CDATA[
			import mx.events.CloseEvent;
			import mx.managers.PopUpManager;
			
			//回調函數
			public var callBack:Function;
			
			public var age:String = "";

			/*關閉事件函數*/
			protected function closeHandler(event:CloseEvent):void
			{
				PopUpManager.removePopUp(this);
			}

			/*改動button事件函數*/
			protected function updateHandler(event:MouseEvent):void
			{
				stuAge.text = age;
			}
			
            /*取消button事件函數*/
			protected function cancelHandler(event:MouseEvent):void
			{
				number.text = "";
				stuName.text = "";
				PopUpManager.removePopUp(this);
				if(isPopUp)
				{
					callBack.call(parent);
				}
			}
		]]>
	</fx:Script>
	<fx:Declarations>
		<!-- 將非可視元素（好比服務、值對象）放在此處 -->
	</fx:Declarations>
	
	<mx:VBox width="100%" height="100%">
		<mx:Form>
			<mx:FormItem label="學號：">
				<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="性別：">
				<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="年齡：">
				<s:TextInput id="stuAge" width="200" maxChars="2"/>
			</mx:FormItem>
			<mx:FormItem>
				<mx:HBox width="100%">
					<s:Button label="改動" 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>

三、設計結果

（1）初始化時

（2）單擊改動button