Flex的Module通信，事件和接口方式

Module組件

<?xml version="1.0" encoding="utf-8"?>
<mx:Module xmlns:fx="http://ns.adobe.com/mxml/2009" 
		   xmlns:s="library://ns.adobe.com/flex/spark" 
		   creationComplete="module1_creationCompleteHandler(event)"
		   xmlns:mx="library://ns.adobe.com/flex/mx" layout="absolute" width="400" height="300">
	<fx:Script>
		<![CDATA[
			import mx.events.FlexEvent;
			import mx.events.DynamicEvent;
			
			[Bindable]private var command:String="";
			protected function module1_creationCompleteHandler(event:FlexEvent):void
			{
				//從Application訂閱
				var sharedEventDispatcher:IEventDispatcher=systemManager.loaderInfo.sharedEvents;
				
				sharedEventDispatcher.addEventListener("init",onInit,false,0,true);
				//通知Application：Module創建完成
				sharedEventDispatcher.dispatchEvent(new Event(Event.COMPLETE));
			}
			
			private function onInit(event:DynamicEvent):void
			{
				command=event.data as String;				
			}

		]]>
	</fx:Script>
	<fx:Declarations>
		<!-- 將非可視元素（例如服務、值對象）放在此處 -->
	</fx:Declarations>
	<mx:Panel id="panel" title="Module With Events. {command}" width="400"  height="200"/>
</mx:Module>

主文件

<?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.DynamicEvent;
			import mx.controls.Alert;
			import mx.events.ModuleEvent;
			import mx.modules.Module;

			private const MODULE_URL:String="dcec/ModuleWithEvents.swf";

			[Bindable]
			private var moduleLoaded:Boolean;

			private function loadModule():void
			{
				//從Module訂閱通知
				var sharedEventDispatcher:IEventDispatcher=moduleLoader.loaderInfo.sharedEvents;
				sharedEventDispatcher.addEventListener(Event.COMPLETE, onModuleCreated);
				moduleLoader.loadModule(MODULE_URL);
				moduleLoaded=true;
			}
			private function onModuleCreated(event:Event):void
			{
				trace("Module CreateComplete happened");

				//發送命令到Module
				var sharedEventDispatcher:IEventDispatcher=moduleLoader.loaderInfo.sharedEvents;
				var dynamicEvent:DynamicEvent=new DynamicEvent("init");

				dynamicEvent.data=" Test Title!";
				sharedEventDispatcher.dispatchEvent(dynamicEvent);
			}

			private function unloadModule():void
			{
				moduleLoader.unloadModule();
				moduleLoaded=false;
			}
		]]>
	</mx:Script>
	<mx:HBox>
		<mx:Button label="Load Module"   click="loadModule()"/>
		<mx:Button label="Unload Module"  click="unloadModule()"  enabled="{moduleLoaded}"/>
	</mx:HBox>
	<mx:ModuleLoader id="moduleLoader"	 y="30"/>
</mx:Application>

另外，通過接口通信，見下面

定義接口

package dcec
{
	public interface ICommunication
	{
		function getMessage():String;
		function setMessage(value:String):void;
	}
}

定義模塊

<?xml version="1.0" encoding="utf-8"?>
<mx:Module xmlns:mx="http://www.adobe.com/2006/mxml"
		   implements="dcec.ICommunication">
	<mx:Script>
		<![CDATA[
			[Bindable]
			private var _value:String="";
			public function setMessage(value:String):void
			{
				_value=value;
			}

			public function getMessage():String
			{
				return _value;
			}
		]]>
	</mx:Script>
	<mx:Panel id="panel"
			  title="Message :{_value}"
			  width="400"
			  height="200"/>
</mx:Module>

主文件

<?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"
			   minWidth="955"
			   minHeight="600">
	<s:layout>
		<s:BasicLayout/>
	</s:layout>
	<fx:Script>
		<![CDATA[
			import dcec.ICommunication;
			
			import mx.containers.Panel;
			import mx.modules.Module;

			private const MODULE_URL:String="dcec/Module1.swf";
			private function onModifyMessage():void
			{
				var communication:ICommunication=moduleLoader.child as ICommunication;
				communication.setMessage("loaded by application");

				var module:Module=moduleLoader.child as Module;
				var panel:Panel=module.getChildByName("panel") as Panel;
				trace(panel.title);
			}
		]]>
	</fx:Script>

	<mx:HBox>
		<mx:Button id="btnLoad" label="Load Module" click="moduleLoader.loadModule(MODULE_URL)"/>
		<mx:Button id="btnModify" label="Modify Module" click="onModifyMessage()"/>
		<mx:Button label="Unload Module" click="moduleLoader.unloadModule()"/>
	</mx:HBox>
	<mx:ModuleLoader id="moduleLoader" y="30"/>
</s:Application>