Preloader

import mx.events.EventDispatcher;
class com.tri4m.framework.data.loader.Progress extends MovieClip
{
    private var addEventListener:Function;
    private var removeEventListener:Function;
    private var dispatchEvent:Function;
    private var __url:String;
    private var __timeStart:Number;
    private var __timeTaken:Number;
    private var __isTimeOut:Boolean = false;
    private var __percentLoaded:Number;
    private var __bytesLoaded:Number;
    private var __bytesTotal:Number;
    private var __errorCode:String;
    private var __httpStatus:Number;
    private var __width:Number;
    private var __height:Number;
    private var timeoutMS:Number = 5000;
    private var execOnStart:Function;
    private var execOnError:Function;
    private var execOnLoad:Function;
    private var execOnComplete:Function;
    private var execOnInit:Function;
    private var execOnTimeout:Function;
    private var onLoadStart:Function;
    private var onLoadError:Function;
    private var onLoadProgress:Function;
    private var onLoadComplete:Function;
    private var onLoadInit:Function;
    private var mcLoader:MovieClipLoader;
    private var dummy_mc:MovieClip;
    /**
     * getter
     */
    public function get url():String
    {
        return this.__url;
    }
    public function get timeStart():Number
    {
        return this.__timeStart;
    }
    public function get timeTaken():Number
    {
        return this.__timeTaken;
    }
    public function get isTimeOut():Boolean
    {
        return this.__isTimeOut;
    }
    public function get percentLoaded():Number
    {
        return this.__percentLoaded;
    }
    public function get bytesLoaded():Number
    {
        return this.__bytesLoaded;
    }
    public function get bytesTotal():Number
    {
        return this.__bytesTotal;
    }
    public function get errorCode():String
    {
        return this.__errorCode;
    }
    public function get httpStatus():Number
    {
        return this.__httpStatus;
    }
    public function get width():Number
    {
        return this.__width;
    }
    public function get height():Number
    {
        return this.__height;
    }
    /**
     * callbacks
     */
    public function set callbackOnStart(callback:Function):Void
    {
        this.execOnStart = callback;
    }
    public function set callbackOnError(callback:Function):Void
    {
        this.execOnError = callback;
    }
    public function set callbackOnLoad(callback:Function):Void
    {
        this.execOnLoad = callback;
    }
    public function set callbackOnComplete(callback:Function):Void
    {
        this.execOnComplete = callback;
    }
    public function set callbackOnInit(callback:Function):Void
    {
        this.execOnInit = callback;
    }
    public function set callbackOnTimeout(callback:Function):Void
    {
        this.execOnTimeout = callback;
    }
    /**
     * environment
     */
    public function set timeoutOn(ms:Number):Void
    {
        this.timeoutMS = ms;
    }
    /**
     *
     */
    public function Progress(target:MovieClip)
    {
        this.dummy_mc = target.createEmptyMovieClip("dummy_mc", 0);
        this.dummy_mc._visible = false;
        this.dummy_mc._alpha = 0;

        EventDispatcher.initialize(this);
        this.mcLoader = new MovieClipLoader();
        this.mcLoader.addListener(this);
        this.onLoadStart = function(target_mc:MovieClip):Void
        {
            this.__timeStart = getTimer();
            this.execOnStart();
        };
        this.onLoadError = function(target_mc:MovieClip, errorCode:String, httpStatus:Number):Void
        {
            this.__errorCode = errorCode;
            this.__httpStatus = httpStatus;
            this.execOnError();
        };
        this.onLoadProgress = function(target_mc:MovieClip, bytesLoaded:Number, bytesTotal:Number):Void
        {
            this.__bytesLoaded = bytesLoaded;
            this.__bytesTotal = bytesTotal;
            this.__timeTaken = getTimer() - this.__timeStart;
            if (this.__timeTaken > this.timeoutMS)
            {
                this.__isTimeOut = true;
                this.execOnTimeout();
                this.mcLoader.unloadClip(target_mc);
                return;
            }
            this.__percentLoaded = this.percentage(bytesLoaded, bytesTotal);
            this.execOnLoad();
        };
        this.onLoadComplete = function(target_mc:MovieClip, httpStatus:Number):Void
        {
            this.__httpStatus = httpStatus;
            this.execOnComplete();
        };
        this.onLoadInit = function(target_mc:MovieClip):Void
        {
            this.__width = dummy_mc._width;
            this.__height = dummy_mc._height;
            this.execOnInit();
        };
    }
    public function loadClip(URL:String):Void
    {
        this.__url = URL;
        this.mcLoader.loadClip(this.__url, this.dummy_mc);
    }
    private function percentage(__bytesLoaded:Number, __bytesTotal:Number):Number
    {
        return Math.floor((__bytesLoaded / __bytesTotal * 100) * 10000) / 10000;
    }
}