Flex嵌入HTML页面

这段时间一直在苦心研究Flex，今天突然想，我们平时都是把swf放到网页中，怎么才能把网页嵌入到Flex中呢？我查了一些资料，然后经过自己的不懈努力，终于搞定。
为了方便，写了个嵌入HTML页面的代理IFrame组件，该组件封装了所有需要的Flex端代码，后面只要通过标签调用就OK了。
IFrame.mxml文件如下:

<?xml version="1.0" encoding="utf-8"?>
<mx:Canvas xmlns:mx="http://www.adobe.com/2006/mxml" resize="callLater(moveIFrame)" move="callLater(moveIFrame)" initialize="init();">
        <mx:Script>
        <![CDATA[
            import mx.controls.Alert;
            import flash.external.ExternalInterface;
            import flash.geom.Point;
            import flash.net.navigateToURL;
            private var __source: String;

            //Flash场景0,0坐标 var localPt:Point = new Point(0, 0);
            //转换为浏览器页面坐标 var globalPt:Point = this.localToGlobal(localPt);
            //这样就可以在Flex页面中嵌入任意的HTML页面了，为了方便，
                        public function moveIFrame():void
            {
                var localPoint:Point = new Point(0, 0);
                var globalPoint:Point = this.localToGlobal(localPoint);
                ExternalInterface.call("moveIFrame", globalPoint.x, globalPoint.y, this.width, this.height);
            }

            //调用javaScript的loadIFrame方法，设置IFrame的src(URL)
            public function set source(source: String): void {
                if (source)
                {
                    if (!ExternalInterface.available)
                    {
                       Alert.show("The ExternalInterface is not available in this container. Internet Explorer ActiveX, " +
                            "Firefox, Mozilla 1.7.5 and greater, or other browsers that support NPRuntime are required.");
                    }
                    __source = source;
                    //Alert.show(source);
                    ExternalInterface.call("loadIFrame",source);
                }
            }

            //初始化时注册供javaScript调用的方法
            public function init():void
            {
                ExternalInterface.addCallback("IFrameOnBulr",showIFrameAgain);
            }

            //javaScript调用IFrameOnBlur方法时的处理方法
            public function showIFrameAgain():void
            {
                this.source=this.__source;
                this.showIFrame=true;
                this.moveIFrame();
            }

            //调用javaScript的IFrameShow方法，设置IFrame的可见状态
            public function set showIFrame(display:Boolean):void
            {
                ExternalInterface.call("IFrameShow",display);
            }

            public function get source(): String {
                return __source;
            }
            //重载了Canvas的visible属性，以便在Canvas隐藏HTML页面中的IFrame
            override public function set visible(visible: Boolean): void
            {
                super.visible=visible;
                if (visible)
                {
                    ExternalInterface.call("showIFrame");
                }
                else
                {
                    ExternalInterface.call("hideIFrame");
                }
            }
        ]]>
    </mx:Script>
</mx:Canvas>

IFremaDemo.mxml文件如下：

<?xml version="1.0" encoding="utf-8"?>   
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" xmlns:zq="*">   
<zq:IFrame mouseUp="Iframe.showIFrame=true;Iframe.moveIFrame();Iframe.source=Iframe.source" id="Iframe" source="http://weather.news.qq.com/inc/ss258.htm" x="240" y="23"  width="190" height="190"/>   
</mx:Application>

当然少不了js代码，IFremaDemo.html网页是Flex Builder3自动生成的，然后需要加上以下代码：

<script>
    function moveIFrame(x,y,w,h) {
       var frameRef=document.getElementById("myFrame");
       frameRef.style.left=x;
       frameRef.style.top=y;
        }
    function loadIFrame(url){
         document.getElementById("myFrame").src=url;
    }

    function IFrameShow(display){
    document.getElementById("myFrame").style.visibility=display?"visible":"hidden";
    }

    function IFrameOnBulr()
    {
        //根据id获取flash实例，ListDemo，可以从Embed
        var flash = (navigator.appName.indexOf ("Microsoft") !=-1)?window["IFremaDemo"]:document["IFremaDemo"];
        //调用ActionScript注册的回调方法
        flash.IFrameOnBulr();
    }
</script>
<iframe id="myFrame" name="myFrame" onblur="this.style.visibility='visible';IFrameOnBulr();" width="189" height="190" marginwidth="0" marginheight="0" hspace="0" vspace="0" frameborder="0" scrolling="no" style="position:absolute;"></iframe>