Cairngorm框架应用

最新推荐文章于 2025-11-23 21:36:02 发布

最新推荐文章于 2025-11-23 21:36:02 发布 · 130 阅读

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#框架 #Adobe #Flex #Flash #.net

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本文介绍如何使用Cairngorm框架实现Flex应用的登录功能，包括Value Object定义、ModelLocator设置、自定义事件创建、事件处理逻辑、远程调用配置及控制器注册等关键步骤。

首先在项目中加入Cairngorm.swc文件

一、建立一个valueObject类

package com.dream.valueObjects
{
    public class User
    {
        public var username:String;
        public var password:String;
        public var return_Check_Login:String;

        public function User()
        {
            this.username = "";
            this.password = "";
            this.return_Check_Login = "";
        }

    }
}

二、ModelLocator 数据托管

package com.dream.model
{
    import com.dream.valueObjects.User;

    [Bindable]
    public class ModelLocator
    {
        public var user:User = new User();
        private static var __instance:ModelLocator = null;

        public static function instance():ModelLocator{
               if(null == __instance){
                  __instance = new ModelLocator();
               }
               return __instance;
        }

    }
}

三、创建Event事件

package com.dream.business.events.login
{
    import com.adobe.cairngorm.control.CairngormEvent;
    import com.dream.valueObjects.User;

    public class CheckLoginUserEvent extends CairngormEvent
    {
        public static var EVENT_ID:String = "checkLoginUser";

        public var user:User;

        public function CheckLoginUserEvent(user:User)
        {
            super(EVENT_ID);
            this.user = user;
        }

    }
}

四、信息接收

package com.dream.business.delegates
{
    import com.adobe.cairngorm.business.ServiceLocator;
    import com.dream.model.ModelLocator;
    import com.dream.valueObjects.User;

    import mx.rpc.AsyncToken;
    import mx.rpc.IResponder;
    import mx.rpc.remoting.RemoteObject;

    public class CheckLoginUserDelegate
    {

        private var __locator:ServiceLocator = ServiceLocator.getInstance();

        private var __remote:RemoteObject;

        private var __responder:IResponder;

        public function CheckLoginUserDelegate(responder:IResponder)
        {
            __remote = __locator.getRemoteObject("checkLogin");
            __responder = responder;
        }



        public function returnCheckLoginUser(user:User):void{
               var token:AsyncToken = __remote.checkUser(user.username,user.password);
               token.addResponder(__responder);
        }

    }
}

五、信息处理

package com.dream.business.commands
{
    import com.adobe.cairngorm.commands.ICommand;
    import com.adobe.cairngorm.control.CairngormEvent;
    import com.dream.business.delegates.CheckLoginUserDelegate;
    import com.dream.business.events.login.CheckLoginUserEvent;
    import com.dream.model.ModelLocator;
    import com.dream.valueObjects.User;

    import flash.net.URLRequest;
    import flash.net.navigateToURL;

    import mx.controls.Alert;
    import mx.rpc.IResponder;
    import mx.rpc.events.ResultEvent;

    public class CheckLoginUserCommand implements ICommand,IResponder
    {
        public function execute(event:CairngormEvent):void{
            var checkLoginUserEvent:CheckLoginUserEvent = event as CheckLoginUserEvent;
            var checkLoginUserDelegate:CheckLoginUserDelegate = new CheckLoginUserDelegate(this);
            checkLoginUserDelegate.returnCheckLoginUser(checkLoginUserEvent.user);
        }


        public function result(data:Object):void{
               var resultEvent:ResultEvent = data as ResultEvent;
               var user:User = new User();
               user.return_Check_Login = resultEvent.result as String;
               ModelLocator.instance().user = user;
               if(user.return_Check_Login == "success"){
                   navigateToURL(new URLRequest("../dream/main.action"),"_self");
                }else{
                   Alert.show(user.return_Check_Login);
                }
        }



        public function fault(info:Object):void{
              var resultEvent:ResultEvent = info as ResultEvent;
              Alert.show("fault");
        }

    }
}

六、Event与Command关联

package com.dream.business
{
    import com.adobe.cairngorm.control.FrontController;
    import com.dream.business.commands.CheckLoginUserCommand;
    import com.dream.business.events.login.CheckLoginUserEvent;

    public class FSController extends FrontController
    {
        public function FSController(){
               this.loadController();
        }

        private function loadController():void{
                this.addCommand(CheckLoginUserEvent.EVENT_ID,CheckLoginUserCommand);
        }

    }
}

七、配置service

<?xml version="1.0" encoding="utf-8"?>
<rds:ServiceLocator xmlns:rds="com.adobe.cairngorm.business.*"
    xmlns:mx="http://www.adobe.com/2006/mxml">
   

    <mx:RemoteObject id="checkLogin" destination="loginService" showBusyCursor="true"/>
</rds:ServiceLocator>

八、在application中注册

<rds:Services xmlns:rds="com.dream.business.*"/>

<router:FSController xmlns:router="com.dream.business.*"/>