/********************************************
*	Preloader
*
*	Description: Loads all xml and swfs.
*	@author Paul Terhaar
*	@since  10-25
*	Copyright (C) 2008 Wirestone All Rights Reserved.
*
*	-----------------------------------------
*	Change Log:
*	-----------------------------------------
*	date:		by:				description:
*	--			--				--
*
*	-----------------------------------------
********************************************/

package {
	import flash.display.MovieClip;
	import flash.events.Event;
	import com.stimuli.loading.BulkLoader;
	import com.stimuli.loading.BulkProgressEvent;
	import com.hp.kiosk.ProductSorter;

	public class Preloader extends MovieClip {

		// _mainMC is what the main swf is loaded into
		// typed as "*" because type is not known at compile time
		private var _mainMC:*;

		// BulkLoaders
		private var _XMLLoader:BulkLoader;
		private var _assetLoader:BulkLoader;

		// load vars
		private var _masterExternalBytesLoaded:Number = 0;
		private var _masterExternalBytesTotal:Number  = 0;

		// this is where all xml and product/search arrays are stored
		private var _productSorter = new ProductSorter ();

		/**
		 *	Constructor
		 */
		public function Preloader () {
			init ();
		}

		/**
		 *	Create loaders for xml and swfs
		 */
		private function init ():void {
			// load the xml
			_XMLLoader = new BulkLoader ("XMLLoader");
			_XMLLoader.logLevel = BulkLoader.LOG_SILENT;; // LOG_SILENT, LOG_INFO, LOG_VERBOSE - set level to verbose, for debugging only
			_XMLLoader.add("assets/xml/printer_search.xml",   {id:"printer_search", maxTries:10, priority:20});
			_XMLLoader.add("assets/xml/printer_details.xml",  {id:"printer_details", maxTries:10, priority:20});
			_XMLLoader.add("assets/xml/computer_search.xml",  {id:"computer_search", maxTries:10, priority:20});
			_XMLLoader.add("assets/xml/computer_details.xml", {id:"computer_details", maxTries:10, priority:20});
			_XMLLoader.add("assets/xml/search_options.xml",   {id:"search_options", maxTries:10, priority:20});
			_XMLLoader.addEventListener(BulkLoader.COMPLETE, XMLLoaded);
			_XMLLoader.start ();

			// creates a BulkLoader instance with a name of "main-site", that can be used to retrieve items without having a reference to this instance
			_assetLoader = new BulkLoader("main-site");
			_assetLoader.logLevel = BulkLoader.LOG_SILENT; // LOG_SILENT, LOG_INFO, LOG_VERBOSE - set level to verbose, for debugging only
			_assetLoader.add("main.swf", { id:"mainMC", maxTries:10 } );
			_assetLoader.add("assets/video/TouchSmartII_1055x954.flv", { id:"demoVideo", maxTries:10, pausedAtStart:true } );
			_assetLoader.addEventListener(BulkLoader.PROGRESS, onAllItemsProgress);
			_assetLoader.addEventListener(BulkLoader.COMPLETE, onAllItemsLoaded);
		};

		/**
		 *	@param	event	 BulkProgressEvent
		 *	When xml is loaded, store xml in _productSorter
		 *	then start the swf loader
		 */

		private function XMLLoaded (event:BulkProgressEvent):void {
			// set xml document vars on productSorter
			_productSorter.printerSearchXML   = _XMLLoader.getXML("printer_search");;
			_productSorter.printerDetailsXML  = _XMLLoader.getXML("printer_details");;
			_productSorter.computerSearchXML  = _XMLLoader.getXML("computer_search");;
			_productSorter.computerDetailsXML = _XMLLoader.getXML("computer_details");;
			_productSorter.searchOptionsXML   = _XMLLoader.getXML("search_options");;

			// once the xml is loaded, load the other stuff
			_assetLoader.start();
		};

		/**
		 *	@param	event	 BulkProgressEvent
		 *	This evt is a "super" progress event, it has all the information you need to
		 *	display progress by many criterias (bytes, items loaded, weight)
		 *	this function is currently unused.
		 *	if we were displaying a progress bar, this is where the preloader would be updated
		 */
		private function onAllItemsProgress (event:BulkProgressEvent):void {
			_masterExternalBytesLoaded = event.bytesLoaded;
			_masterExternalBytesTotal  = event.bytesTotal;
			var loadedWeightPercent    = event.weightPercent;

			if (loadedWeightPercent != 0){
				if (loadedWeightPercent >= 1){
					// _loaderAnimation.handleComplete ();
				} else {
					// _loaderAnimation.handleProgress ( loadedWeightPercent, 1);
				}
			}
		}

		/**
		 *	@param	event	 BulkProgressEvent
		 *	when the swf loader is finished loading, add main.swf to the preloader stage
		 *	set vars in _mainMC needed for later
		 */
		public function onAllItemsLoaded (event:Event): void {
			_mainMC = _assetLoader.getMovieClip("mainMC");
			_mainMC.registerLoader(_assetLoader);
			_mainMC.productSorter = _productSorter;
			addChild (_mainMC);
		}

	}
}