Image Preloader

import com.tri4m.framework.core.builder.MovieClipController;
import com.tri4m.framework.data.loader.Progress;
class com.tri4m.application.js.external.ImagePreloader
{
    private var base:MovieClipController;
    private var progressbar:MovieClipController;
    private var controllerWrapper:MovieClipController;
    private var base_InstanceName:String = "ExternalInterfaceImagePreloader";
    private var progressbar_InstanceName:String = "Progressbar";
    private var controllerWrapper_InstanceName:String = "ControllerWrapper";
    private var controller:Progress;
    public function get Base():MovieClip
    {
        return this.base.MovieClip;
    }
    public function get Progressbar():MovieClip
    {
        return this.progressbar.MovieClip;
    }
    public function get ControllerWrapper():MovieClip
    {
        return this.controllerWrapper.MovieClip;
    }
    public function ImagePreloader(target:MovieClip, depth:Number)
    {
        this.base = new MovieClipController(target, this.base_InstanceName, depth);
        this.progressbar = new MovieClipController(this.Base, this.progressbar_InstanceName);
        this.controllerWrapper = new MovieClipController(this.Base, this.controllerWrapper_InstanceName);
        this.controller = new Progress(this.ControllerWrapper);
        this.controller.callbackOnStart = this.createCallbackOnStart();
        this.controller.callbackOnError = this.createCallbackOnError();
        this.controller.callbackOnLoad = this.createCallbackOnLoad();
        this.controller.callbackOnComplete = this.createCallbackOnComplete();
        this.controller.callbackOnInit = this.createCallbackOnInit();
        this.controller.callbackOnTimeout = this.createCallbackOnTimeout();
        this.controller.timeoutOn = 60000;
        this.controller.loadClip('xxxxl.jpg');
    }
    private function createCallbackOnStart():Function
    {
        var p:Progress = this.controller;
        return function ():Void
        {
            flash.external.ExternalInterface.call("alert", 'start download ' + p.url);
        };
    }
    private function createCallbackOnError():Function
    {
        var p:Progress = this.controller;
        return function ():Void
        {
            flash.external.ExternalInterface.call("alert", 'error ' + p.httpStatus);
        };
    }
    private function createCallbackOnLoad():Function
    {
        var p:Progress = this.controller;
        var send:Boolean = false;
        return function ():Void
        {
            if(send === false)
            {
                flash.external.ExternalInterface.call("alert", 'bytesTotal ' + p.bytesTotal);
                send = true;
            }
            // not yet...
            //flash.external.ExternalInterface.call("alert", 'loading ' + int(p.percentLoaded) + '%');
        };
    }
    private function createCallbackOnComplete():Function
    {
        var p:Progress = this.controller;
        return function ():Void
        {
            flash.external.ExternalInterface.call("alert", p.timeTaken + 'ms');
        };
    }
    private function createCallbackOnInit():Function
    {
        var p:Progress = this.controller;
        return function ():Void
        {
            flash.external.ExternalInterface.call("alert", 'width ' + p.width + 'px/height ' + p.height + 'px');
        };
    }
    private function createCallbackOnTimeout()
    {
        var p:Progress = this.controller;
        return function ():Void
        {
            flash.external.ExternalInterface.call("alert", 'Timeout after ' + p.timeTaken + 'ms');
        };
    }
}