flex框架pureMVC的使用
做flex做久做大了,使用一个框架便是自然而然的事情。这样程序才会更健壮,更易于扩展,更易于维护。pureMVC足够简单,核心也只有十来个类,是一个轻量级的Flex框架,只一天的时间,就可以学通,没有理由不用它的。
麻雀虽小,五脏俱全,pureMVC,直译过来就是“纯MVC”,是一个MVC框架。官方的中文文档有44页,放在附件中,可以下载了看。推荐一个入门的文章给大家。(http://riachina.com/showtopic-11011.html ),里面有足够全面的介绍。这里我想利用一个更加简单的图片展示的例子来展示pureMVC的使用细节。先看效果:
介绍一下这个应用。程序一开始便请求展示的图片信息(包括图片的链接以及名称),得到信息后便可以通过两个按钮进行逐张的浏览。这个例子太简单了,以致根本没有必要去用pureMVC,这里我只是想借用它来介绍pureMVC如何使用的。
如果将上面的例子假设为做菜,哈哈,就会更有意思了。两个 Button ,一个 Image 与 Label 便是锅碗瓢盆,而图片的信息便是原料,而怎么样来炒,便要看菜谱了。pureMVC 的设计者估计也是做菜的高手。这些对他们来说就是 Model (原料), View (锅碗瓢盆), Controller (菜谱),三个都是单例模式。同时他们还设计出一个厨师,叫 Facade ,由它来调度上面三个,也是单例的。
一切从 Facade 开始,它实列化 Model , View , Controller 。MVC 也找了一些帮手, Model 找到的是 Proxy 们,代理?好像翻译得不对。不管,以后的数据就靠它了。View 找的是 Mediator,它们负责UI,Controller 找的是 Command,不过 Command 性格比较怪,做完一次任务就不干了,也就是短生命同期的。每次用它 pureMVC 都会重新创建。所以只能用它来做业务逻辑,而不要将长期的数据放在里面。
pureMVC 消息采用的观察者模式,每次做完一件事情,就可以向外发出一个 Notification (不是 Flex 里的 Event 哟),就像向外宣布“事情做完了”,具体谁关心就管不着了。这里 Proxy 有点特别,它们只会向外发出 Notification ,但从不接收,只关心自己的数据模型。这很有意义,想想人家叫 “纯MVC” 嘛。
好了,开始做这个例子。刚开始学东西的时候总会发现,文档都看懂了,东西好像都会了。真要用它做东西,却不知道怎么下手。所以还要再好好分析下程序,看看怎么样下手。
首先界面上就四个控件,两个Button ,一个 Image 和 一个Label ,从功能上可以分为两类,两个 Button 是用来作控制的, Image 与 Label 用来显示图片及图片名称。和 UI 对应的是 Mediator ,所以要定义两个 Mediator 类。如果程序变大了,也可以这样来划分,千万不要为每个按钮作一个 Mediator ,也不要整个 Application 才一个 Mediator,最好按功能来划分。
然后再来看 Model ,本例中的数据只有一项,便是要显示的图片资料。所以只要求定义一个 Proxy 用来数据交互就够了。flex 得到数据的方式有许多种,如HttpService ,RemoteObject ,XMLSocket等,但不管什么,总之都是从其他地方得到有用的信息,然后将它变成自己自己的程序能够理解的形式。当然解析数据,大多是业务逻辑( Controller )的工作了。
再看Controller这边,Controller 涉及到业务 ,本例中业务有程序启动(StartUp),还有个就是得到图片信息。还有吗,好像没有了。两个Command就可以应付了。
好了,可以动手编码了。
定义两个Mediator (ImageMediator 与 ControlBtnsMediator,继承Mediator类,实现IMediator接口),
两个Command ( StartUpCommand 与 GetUrlListCommand,继承SimpleCommand类,实现ICommand)
以及一个Proxy (ImageUrlListProxy ,继承Proxy,实现IProxy接口)
一个图片信息类(ImageUrlVO),用来存放单张图片信息。
一个Facade (MyAppFacade 继承Facade,实现IFacade接口)
程序的包结构:
同时思考需要的 Notification ,它是将整个框架联系起来的关键。
1.程序开始便要启动 StrartUpCommand,所以StrartUpCommand 要关注 "app_startup"
2.StrartUpCommand主要完成Proxy与Mediator的注册,完成后便可以启动GetUrlListCommand,所以GetUrlListCommand应关注"app_startup_over"
3.GetUrlListCommand 通过 ImageUrlListProxy去获取图片信息,前面提到 ImageUrlListProxy是不能接收Notification,所以GetUrlListCommand要直接调用ImageUrlListProxy的public成员函数loadUrlList()去获取图片信息
4.ImageUrlListProxy 得到图片链接以后,便可以对外宣布“图片信息已经得到了”,即对外Send一个"url_load_complete"的Notification,关注这一Notification的自然是ImageMediator,它直接将图片信息保存起来,并显示第一张图片内容
5.ControlBtnsMediator不需要关注任何Notification,不过点击两个按钮时会向外Send Notification ("next_image" 与 "prev_image"),,通知显示下一张或上一张图片。关注这两个Notification的自然是ImageMediator了。
好了,流程都介绍完了,来看代码。
先定义类 ImageUrlVO 的代码如下:
Java代码
package MyApp.Model.VO
{
public class ImageUrlVO
{
public var url:String; //图片链接
public var name:String; //图片名称
public function ImageUrlVO(url:String,name:String){
this.url = url;
this.name = name;
}
}
}
Java代码
package MyApp.Model.VO
{
public class ImageUrlVO
{
public var url:String; //图片链接
public var name:String; //图片名称
public function ImageUrlVO(url:String,name:String){
this.url = url;
this.name = name;
}
}
}
接下来从程序的执行步骤依次看各个类的代码。
主界面 HelloPureMVC.mxml:
Xml代码
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"
width="200" height="200" creationComplete="initApp()">
<mx:Script>
<![CDATA[
import MyApp.MyAppFacade;
public function initApp():void{
var facade:MyAppFacade = MyAppFacade.getInstance();
facade.startup( this );
}
]]>
</mx:Script>
<mx:Canvas id="mainContainer" width="100%" height="100%">
<mx:Label id="nameLabel" x="87.5" y="0"/>
<mx:Image id="image" x="30" y="20" width="140" height="140"/>
<mx:Button x="10" y="168" label="上一张" id="btnPrev"/>
<mx:Button x="125" y="168" label="下一张" id="btnNext"/>
</mx:Canvas>
</mx:Application>
Xml代码
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"
width="200" height="200" creationComplete="initApp()">
<mx:Script>
<![CDATA[
import MyApp.MyAppFacade;
public function initApp():void{
var facade:MyAppFacade = MyAppFacade.getInstance();
facade.startup( this );
}
]]>
</mx:Script>
<mx:Canvas id="mainContainer" width="100%" height="100%">
<mx:Label id="nameLabel" x="87.5" y="0"/>
<mx:Image id="image" x="30" y="20" width="140" height="140"/>
<mx:Button x="10" y="168" label="上一张" id="btnPrev"/>
<mx:Button x="125" y="168" label="下一张" id="btnNext"/>
</mx:Canvas>
</mx:Application>
主界面现在只关注布局就够了。同时还要注意到里面的initApp()函数,它首先得到Facade实例,再调用其 startup() 函数启动整个PureMVC框架。
跟进去再让看 MyAppFacade 的实现。
Java代码
package MyApp
{
import MyApp.Controller.GetUrlListCommand;
import MyApp.Controller.StartUpCommand;
import org.puremvc.as3.interfaces.IFacade;
import org.puremvc.as3.patterns.facade.Facade;
public class MyAppFacade extends Facade implements IFacade
{
public static const APP_STARTUP:String = "app_startup";
public static const APP_STARTUP_OVER:String = "app_startup_over";
public function MyAppFacade()
{
super();
}
public static function getInstance():MyAppFacade{
if(instance==null) instance = new MyAppFacade();
return instance as MyAppFacade;
}
override protected function initializeController():void{
super.initializeController();
//register some Commands
registerCommand(APP_STARTUP,StartUpCommand);
registerCommand(APP_STARTUP_OVER,GetUrlListCommand);
}
public function startup(app:Object):void{
sendNotification(APP_STARTUP,app);
}
}
}
Java代码
package MyApp
{
import MyApp.Controller.GetUrlListCommand;
import MyApp.Controller.StartUpCommand;
import org.puremvc.as3.interfaces.IFacade;
import org.puremvc.as3.patterns.facade.Facade;
public class MyAppFacade extends Facade implements IFacade
{
public static const APP_STARTUP:String = "app_startup";
public static const APP_STARTUP_OVER:String = "app_startup_over";
public function MyAppFacade()
{
super();
}
public static function getInstance():MyAppFacade{
if(instance==null) instance = new MyAppFacade();
return instance as MyAppFacade;
}
override protected function initializeController():void{
super.initializeController();
//register some Commands
registerCommand(APP_STARTUP,StartUpCommand);
registerCommand(APP_STARTUP_OVER,GetUrlListCommand);
}
public function startup(app:Object):void{
sendNotification(APP_STARTUP,app);
}
}
}
可见Facade做的事情很简单, initializeController() 是用来初始化Controller的,这个函数是建立各个Notification与Command映射的地方,有了上面的流程分析,
Java代码
registerCommand(APP_STARTUP,StartUpCommand);
registerCommand(APP_STARTUP_OVER,GetUrlListCommand);
Java代码
registerCommand(APP_STARTUP,StartUpCommand);
registerCommand(APP_STARTUP_OVER,GetUrlListCommand);
这两行这很容易了。startup()函数,终于轮到它了。它只做了一件事情,就是向外派发一个APP_STARTUP的Notification,关注它的是前面已经建立映射的StartUpCommand,pureMVC会实例化一个StartUpCommand的实例,并将app作为参数,调用其execute函数。
tip:通常用一个字符串来标识一个Notification,不过建议用字符常量。减少犯错的可能。
再来看StartUpCommand的代码:
Java代码
package MyApp.Controller
{
import MyApp.Model.ImageUrlListProxy;
import MyApp.MyAppFacade;
import MyApp.View.ControlBtnsMediator;
import MyApp.View.ImageMediator;
import org.puremvc.as3.interfaces.ICommand;
import org.puremvc.as3.interfaces.INotification;
import org.puremvc.as3.patterns.command.SimpleCommand;
public class StartUpCommand extends SimpleCommand implements ICommand
{
public function StartUpCommand()
{
super();
}
override public function execute(notification:INotification):void
{
var app:HelloPureMVC = notification.getBody() as HelloPureMVC;
//注册代理(proxy)
facade.registerProxy( new ImageUrlListProxy( ImageUrlListProxy.NAME ) );
//注册中介器
facade.registerMediator( new ImageMediator(
ImageMediator.NAME,
{
image:app.image,
nameLabel:app.nameLabel
}
) );
facade.registerMediator( new ControlBtnsMediator(
ControlBtnsMediator.NAME ,
{
btnNext:app.btnNext,
btnPrev:app.btnPrev
}
) );
//通知已经初始化完毕
sendNotification(MyAppFacade.APP_STARTUP_OVER,app);
}
}
}
Java代码
package MyApp.Controller
{
import MyApp.Model.ImageUrlListProxy;
import MyApp.MyAppFacade;
import MyApp.View.ControlBtnsMediator;
import MyApp.View.ImageMediator;
import org.puremvc.as3.interfaces.ICommand;
import org.puremvc.as3.interfaces.INotification;
import org.puremvc.as3.patterns.command.SimpleCommand;
public class StartUpCommand extends SimpleCommand implements ICommand
{
public function StartUpCommand()
{
super();
}
override public function execute(notification:INotification):void
{
var app:HelloPureMVC = notification.getBody() as HelloPureMVC;
//注册代理(proxy)
facade.registerProxy( new ImageUrlListProxy( ImageUrlListProxy.NAME ) );
//注册中介器
facade.registerMediator( new ImageMediator(
ImageMediator.NAME,
{
image:app.image,
nameLabel:app.nameLabel
}
) );
facade.registerMediator( new ControlBtnsMediator(
ControlBtnsMediator.NAME ,
{
btnNext:app.btnNext,
btnPrev:app.btnPrev
}
) );
//通知已经初始化完毕
sendNotification(MyAppFacade.APP_STARTUP_OVER,app);
}
}
}
只有一个execute()函数,它的任务便是注册前面提到的两个Mediator和一个Proxy,用到的是registerProxy()与registerMediator()两个函数,完成注册后便可以对外Send MyAppFacade.APP_STARTUP_OVER 了。关注这一Notificator的便是前面已经建立映射的 GetUrlListCommand 。同样一个 GetUrlListCommand 会被实例化,再调用其execute()函数。
tip:Proxy类的构造函数需要一个proxyName:String作为其唯一标识,可以通过这一字符串得到该Proxy的引用,这里也建议使用字符常量
Java代码
package MyApp.Controller
{
import MyApp.Model.ImageUrlListProxy;
import org.puremvc.as3.interfaces.ICommand;
import org.puremvc.as3.interfaces.INotification;
import org.puremvc.as3.patterns.command.SimpleCommand;
public class GetUrlListCommand extends SimpleCommand implements ICommand
{
public function GetUrlListCommand()
{
super();
}
override public function execute(notification:INotification):void
{
//得到图片链接
(facade.retrieveProxy( ImageUrlListProxy.NAME ) as ImageUrlListProxy).loadUrlList();
}
}
}
Java代码
package MyApp.Controller
{
import MyApp.Model.ImageUrlListProxy;
import org.puremvc.as3.interfaces.ICommand;
import org.puremvc.as3.interfaces.INotification;
import org.puremvc.as3.patterns.command.SimpleCommand;
public class GetUrlListCommand extends SimpleCommand implements ICommand
{
public function GetUrlListCommand()
{
super();
}
override public function execute(notification:INotification):void
{
//得到图片链接
(facade.retrieveProxy( ImageUrlListProxy.NAME ) as ImageUrlListProxy).loadUrlList();
}
}
}
好简单,呵呵,得到 ImageUrlListProxy 的实例,调用其loadUrlList()函数就可以了。前面提到Proxy不会去接收任何Notification,所以只能通过调用其成员函数的形式来使用它。
看看ImageUrlListProxy的代码:
Java代码
package MyApp.Model
{
import MyApp.Model.VO.ImageUrlVO;
import org.puremvc.as3.interfaces.IProxy;
import org.puremvc.as3.patterns.proxy.Proxy;
public class ImageUrlListProxy extends Proxy implements IProxy
{
public static const NAME:String = "ImageUrlListProxy";
//定义一些Notification字符常量
public static const URL_LOAD_COMPLETE:String = "url_load_complete";
public function ImageUrlListProxy(proxyName:String=null, data:Object=null)
{
super(proxyName,data);
}
public function loadUrlList():void{
data = new Array();
//push六张图片的Url
data.push(new ImageUrlVO("http://www.mjbox.com/r/io/ioryioryzhan/pic1.jpg","卡莫"));
data.push(new ImageUrlVO("http://www.mjbox.com/r/io/ioryioryzhan/pic2.jpg","李时珍"));
data.push(new ImageUrlVO("http://www.mjbox.com/r/io/ioryioryzhan/pic3.jpg","姚明"));
data.push(new ImageUrlVO("http://www.mjbox.com/r/io/ioryioryzhan/pic4.jpg","费得了"));
data.push(new ImageUrlVO("http://www.mjbox.com/r/io/ioryioryzhan/pic5.jpg","伍兹"));
data.push(new ImageUrlVO("http://www.mjbox.com/r/io/ioryioryzhan/pic6.jpg","不认得"));
//通知image Url已经全部得到了
if(data==null)trace("data is null");
sendNotification( URL_LOAD_COMPLETE ,data );
}
}
}
Java代码
package MyApp.Model
{
import MyApp.Model.VO.ImageUrlVO;
import org.puremvc.as3.interfaces.IProxy;
import org.puremvc.as3.patterns.proxy.Proxy;
public class ImageUrlListProxy extends Proxy implements IProxy
{
public static const NAME:String = "ImageUrlListProxy";
//定义一些Notification字符常量
public static const URL_LOAD_COMPLETE:String = "url_load_complete";
public function ImageUrlListProxy(proxyName:String=null, data:Object=null)
{
super(proxyName,data);
}
public function loadUrlList():void{
data = new Array();
//push六张图片的Url
data.push(new ImageUrlVO("http://www.mjbox.com/r/io/ioryioryzhan/pic1.jpg","卡莫"));
data.push(new ImageUrlVO("http://www.mjbox.com/r/io/ioryioryzhan/pic2.jpg","李时珍"));
data.push(new ImageUrlVO("http://www.mjbox.com/r/io/ioryioryzhan/pic3.jpg","姚明"));
data.push(new ImageUrlVO("http://www.mjbox.com/r/io/ioryioryzhan/pic4.jpg","费得了"));
data.push(new ImageUrlVO("http://www.mjbox.com/r/io/ioryioryzhan/pic5.jpg","伍兹"));
data.push(new ImageUrlVO("http://www.mjbox.com/r/io/ioryioryzhan/pic6.jpg","不认得"));
//通知image Url已经全部得到了
if(data==null)trace("data is null");
sendNotification( URL_LOAD_COMPLETE ,data );
}
}
}
loadUrlList()函数去得到图片信息,由于没有后台,所以只能用这种直接写硬编码的方式了, ,会有很多方式得到数据,如前面提到的HttpService及RemoteObject等。同步的异步的都可以用。
Proxy 有一个data成员,是个Object,用来盛放接收到的数据。得到数据后便可以Send一个Notification (URL_LOAD_COMPLETE)了。接下来看关注这个Notification的ImageMediator。
Java代码
package MyApp.View
{
import mx.controls.Alert;
import mx.controls.Image;
import mx.controls.Label;
import MyApp.Model.ImageUrlListProxy;
import MyApp.Model.VO.ImageUrlVO;
import org.puremvc.as3.interfaces.IMediator;
import org.puremvc.as3.interfaces.INotification;
import org.puremvc.as3.patterns.mediator.Mediator;
public class ImageMediator extends Mediator implements IMediator
{
public static const NAME:String = "ImageMediator";
private var arrayOfImage:Array=null;
private var currentIndex:int=-1;
public function ImageMediator(mediatorName:String=null, viewComponent:Object=null)
{
super(mediatorName, viewComponent);
}
override public function listNotificationInterests():Array{
//列出感兴趣的Notification
return [
ImageUrlListProxy.URL_LOAD_COMPLETE,
ControlBtnsMediator.NEXT_IMAGE,
ControlBtnsMediator.PREV_IMAGE
];
}
override public function handleNotification(notification:INotification):void{
switch(notification.getName()){
case ImageUrlListProxy.URL_LOAD_COMPLETE:
arrayOfImage = notification.getBody() as Array;
if(arrayOfImage){
trace(arrayOfImage.length);
trace((viewComponent.nameLabel as Label).text);
(viewComponent.nameLabel as Label).text = (arrayOfImage[0] as ImageUrlVO).name;
(viewComponent.image as Image).source = (arrayOfImage[0] as ImageUrlVO).url;
currentIndex = 0;
}else{
Alert.show("没有得到图片链接","错误");
}
break;
case ControlBtnsMediator.NEXT_IMAGE:
if(currentIndex==-1)break;
if(currentIndex >= arrayOfImage.length-1 ){Alert.show("已经是最后一张图片了","错误");}
else{
trace((viewComponent.nameLabel as Label));
(viewComponent.nameLabel as Label).text = (arrayOfImage[currentIndex+1] as ImageUrlVO).name;
(viewComponent.image as Image).source = (arrayOfImage[currentIndex+1] as ImageUrlVO).url;
++currentIndex;
}
break;
case ControlBtnsMediator.PREV_IMAGE:
if(currentIndex==-1)break;
if(currentIndex ==0 ){Alert.show("目前是第一张图片","错误");}
else{
(viewComponent.nameLabel as Label).text = (arrayOfImage[currentIndex+-1] as ImageUrlVO).name;
(viewComponent.image as Image).source = (arrayOfImage[currentIndex-1] as ImageUrlVO).url;
--currentIndex;
}
break;
default:break;
}
}
}
}
Java代码
package MyApp.View
{
import mx.controls.Alert;
import mx.controls.Image;
import mx.controls.Label;
import MyApp.Model.ImageUrlListProxy;
import MyApp.Model.VO.ImageUrlVO;
import org.puremvc.as3.interfaces.IMediator;
import org.puremvc.as3.interfaces.INotification;
import org.puremvc.as3.patterns.mediator.Mediator;
public class ImageMediator extends Mediator implements IMediator
{
public static const NAME:String = "ImageMediator";
private var arrayOfImage:Array=null;
private var currentIndex:int=-1;
public function ImageMediator(mediatorName:String=null, viewComponent:Object=null)
{
super(mediatorName, viewComponent);
}
override public function listNotificationInterests():Array{
//列出感兴趣的Notification
return [
ImageUrlListProxy.URL_LOAD_COMPLETE,
ControlBtnsMediator.NEXT_IMAGE,
ControlBtnsMediator.PREV_IMAGE
];
}
override public function handleNotification(notification:INotification):void{
switch(notification.getName()){
case ImageUrlListProxy.URL_LOAD_COMPLETE:
arrayOfImage = notification.getBody() as Array;
if(arrayOfImage){
trace(arrayOfImage.length);
trace((viewComponent.nameLabel as Label).text);
(viewComponent.nameLabel as Label).text = (arrayOfImage[0] as ImageUrlVO).name;
(viewComponent.image as Image).source = (arrayOfImage[0] as ImageUrlVO).url;
currentIndex = 0;
}else{
Alert.show("没有得到图片链接","错误");
}
break;
case ControlBtnsMediator.NEXT_IMAGE:
if(currentIndex==-1)break;
if(currentIndex >= arrayOfImage.length-1 ){Alert.show("已经是最后一张图片了","错误");}
else{
trace((viewComponent.nameLabel as Label));
(viewComponent.nameLabel as Label).text = (arrayOfImage[currentIndex+1] as ImageUrlVO).name;
(viewComponent.image as Image).source = (arrayOfImage[currentIndex+1] as ImageUrlVO).url;
++currentIndex;
}
break;
case ControlBtnsMediator.PREV_IMAGE:
if(currentIndex==-1)break;
if(currentIndex ==0 ){Alert.show("目前是第一张图片","错误");}
else{
(viewComponent.nameLabel as Label).text = (arrayOfImage[currentIndex+-1] as ImageUrlVO).name;
(viewComponent.image as Image).source = (arrayOfImage[currentIndex-1] as ImageUrlVO).url;
--currentIndex;
}
break;
default:break;
}
}
}
}
ImageMediator除了关注ImageUrlListProxy.URL_LOAD_COMPLETE外,还要关注ControlBtnsMediator.NEXT_IMAGE以及ControlBtnsMediator.PREV_IMAGE,即为示下一张或上一张图片。
具体怎么将Mediator与其关注的Notification关联起来呢,listNotificationInterests(),就是它了。它要求返回一个字符数组,在注册这个Mediator时,该函数就会被调用,之后,当一个Notification被发送时,如果该Notification的字符串存在于这个字符数组时,这个Mediator就能接收到。
处理Notification是在handleNotification()函数内进行的,通过switch/case的方式,对不同的Notification进行不同的处理。会MFC的筒子们一定会觉得好熟悉啊,在 MFC 里,窗口函数也是这样来处理消息的。
具体代码就不分析了,很简单的。
最后就只有ControlBtnsMediator了。
Java代码
package MyApp.View
{
import flash.events.MouseEvent;
import mx.controls.Button;
import org.puremvc.as3.interfaces.IMediator;
import org.puremvc.as3.patterns.mediator.Mediator;
public class ControlBtnsMediator extends Mediator implements IMediator
{
public static const NAME:String = "ControlBtnsMediator";
public static const NEXT_IMAGE:String = "next_image";
public static const PREV_IMAGE:String = "prev_image";
public function ControlBtnsMediator(mediatorName:String=null, viewComponent:Object=null)
{
super(mediatorName, viewComponent);
(viewComponent.btnPrev as Button).addEventListener(MouseEvent.CLICK,onClickPrev);
(viewComponent.btnNext as Button).addEventListener(MouseEvent.CLICK,onClickNext);
}
private function onClickPrev(e:MouseEvent):void{
sendNotification(PREV_IMAGE);
}
private function onClickNext(e:MouseEvent):void{
sendNotification(NEXT_IMAGE);
}
}
}
Java代码
package MyApp.View
{
import flash.events.MouseEvent;
import mx.controls.Button;
import org.puremvc.as3.interfaces.IMediator;
import org.puremvc.as3.patterns.mediator.Mediator;
public class ControlBtnsMediator extends Mediator implements IMediator
{
public static const NAME:String = "ControlBtnsMediator";
public static const NEXT_IMAGE:String = "next_image";
public static const PREV_IMAGE:String = "prev_image";
public function ControlBtnsMediator(mediatorName:String=null, viewComponent:Object=null)
{
super(mediatorName, viewComponent);
(viewComponent.btnPrev as Button).addEventListener(MouseEvent.CLICK,onClickPrev);
(viewComponent.btnNext as Button).addEventListener(MouseEvent.CLICK,onClickNext);
}
private function onClickPrev(e:MouseEvent):void{
sendNotification(PREV_IMAGE);
}
private function onClickNext(e:MouseEvent):void{
sendNotification(NEXT_IMAGE);
}
}
}
注册监听,响应时发送相应的Notification。
好了,都介绍完了,点击运行吧。
附件中有一个pureMVC的中文文档,以及Project的源文件,pureMVC的代码Project的源文件中。
pureMvc.rar (431.8 KB)
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HelloPureMVC.rar (338.9 KB)
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