var $removeEvents = function (object, type)
{
	if (!object.events) return object;
	if (type){
		if (!object.events[type]) return object;
		for (var fn in object.events[type]) object.removeEvent(type, fn);
		object.events[type] = null;
	} else {
		for (var evType in object.events) object.removeEvents(evType);
		object.events = null;
	}
	return object;
};
		
		
// declaring the class
var gallery = new Class({
	initialize: function(element, options) {
		this.setOptions({
			showArrows: true,
			showCarousel: true,
			showTechinfo: true,
			showInfopane: false,
			showInfoButtons: true,
			thumbHeight: 75,
			thumbWidth: 100,
			thumbSpacing: 10,
			embedLinks: false,
			fadeDuration: 500,
			timed: false,
			delay: 9000,
			preloader: true,
			manualData: [],
			populateData: true,
			elementSelector: "div.imageElement",
			titleSelector: "h3",
			subtitleSelector: "p",
			//myImageIDSelector: "photoID",
			//myTechInfoSelector: "techInfo",
			myImageIDSelector: "h1",
			myTechInfoSelector: "h2",
			linkSelector: "a.open",
			imageSelector: "img.full",
			thumbnailSelector: "img.thumbnail",
			slideInfoZoneOpacity: 0.7,
			carouselMinimizedOpacity: 0.6,
			carouselMinimizedHeight: 0,
			carouselMaximizedOpacity: 0.8, 
			TechinfoMinimizedOpacity: 0.6,
			TechinfoMinimizedHeight: 0,
			TechinfoMaximizedOpacity: 0.8, 
			InfoButtonsMinimizedOpacity: 0.6,
			InfoButtonsMinimizedHeight: 0,
			InfoButtonsMaximizedOpacity: 0.8, 
			destroyAfterPopulate: true,
			baseClass: 'jdGallery',
			withArrowsClass: 'withArrows',
			textShowCarousel: 'Thumbnails',
			textShowTechinfo: 'Info',
			useThumbGenerator: false,
			thumbGenerator: 'resizer.php'
		}, options);
		this.fireEvent('onInit');
		this.currentIter = 0;
		this.lastIter = 0;
		this.maxIter = 0;
		this.galleryElement = element;
		this.galleryData = this.options.manualData;
		this.galleryInit = 1;
		this.galleryElements = Array();
		this.thumbnailElements = Array();
		this.galleryElement.addClass(this.options.baseClass);
		if (this.options.populateData)
			this.populateData();
		element.style.display="block";
		
		if (this.options.embedLinks)
		{
			this.currentLink = new Element('a').addClass('open').setProperties({
				href: '#',
				title: ''
			}).injectInside(element);
			if ((!this.options.showArrows) && (!this.options.showCarousel))
				this.galleryElement = element = this.currentLink;
			else
				this.currentLink.setStyle('display', 'none');
		}
		
		this.constructElements();
		if ((data.length>1)&&(this.options.showArrows))
		{
			var leftArrow = new Element('a').addClass('left').addEvent(
				'click',
				this.prevItem.bind(this)
			).injectInside(element);
			var rightArrow = new Element('a').addClass('right').addEvent(
				'click',
				this.nextItem.bind(this)
			).injectInside(element);
			this.galleryElement.addClass(this.options.withArrowsClass);
		}
		this.loadingElement = new Element('div').addClass('loadingElement').injectInside(element);
		if (this.options.showTechinfo) this.initTechinfo();
		if (this.options.showCarousel) this.initCarousel();
		if (this.options.showInfoButtons) this.initInfoButtons();
		if (this.options.showCarousel) this.showCarousel();
		this.doSlideShow(1);
	},
	populateData: function() {
		currentArrayPlace = this.galleryData.length;
		options = this.options;
		data = this.galleryData;
		this.galleryElement.getElements(options.elementSelector).each(function(el) {
			elementDict = {
				image: el.getElement(options.imageSelector).getProperty('src'),
				number: currentArrayPlace
//				,photoID: el.getElementById(options.myImageIDSelector).innerHTML
//				,techInfo: el.getElementById(options.myTechInfoSelector).innerHTML
				,photoID: el.getElement(options.myImageIDSelector).innerHTML
				,techInfo: el.getElement(options.myTechInfoSelector).innerHTML
			};
			if ((options.showInfopane) | (options.showCarousel))
				Object.extend(elementDict, {
					title: el.getElement(options.titleSelector).innerHTML,
					description: el.getElement(options.subtitleSelector).innerHTML
				});
			if (options.embedLinks)
				Object.extend(elementDict, {
					link: el.getElement(options.linkSelector).href||false,
					linkTitle: el.getElement(options.linkSelector).title||false
				});
			if ((!options.useThumbGenerator) && (options.showCarousel))
				Object.extend(elementDict, {
					thumbnail: el.getElement(options.thumbnailSelector).src
				});
			else if (options.useThumbGenerator)
				Object.extend(elementDict, {
					thumbnail: 'resizer.php?imgfile=' + elementDict.image + '&max_width=' + options.thumbWidth + '&max_height=' + options.thumbHeight
				});
			
			data[currentArrayPlace] = elementDict;
			currentArrayPlace++;
			if (this.options.destroyAfterPopulate)
				el.remove();

		});

		this.galleryData = data;
		this.fireEvent('onPopulated');
	},
	constructElements: function() {
		el = this.galleryElement;
		this.maxIter = this.galleryData.length;
		var currentImg;
		for(i=0;i<this.galleryData.length;i++)
		{
			var currentImg = new Fx.Style(
				new Element('div').addClass('slideElement').setStyles({
					'position':'absolute',
					'left':'0px',
					'right':'0px',
					'top':'151px',
					'margin':'0px',
					'padding':'0px',
					'backgroundImage':"url('" + this.galleryData[i].image + "')",
					'backgroundPosition':"top center",
					'opacity':'0'
				}).injectInside(el),
				'opacity',
				{duration: this.options.fadeDuration}
			);
			this.galleryElements[parseInt(i)] = currentImg;
		}
	},

//	destroySlideShow: function(element) {
//		var myClassName = element.className;
//		var newElement = new Element('div').addClass('myClassName');
//		element.parentNode.replaceChild(newElement, element);
//	},
	startSlideShow: function() {
		this.fireEvent('onStart');
		this.loadingElement.style.display = "none";
		this.lastIter = this.maxIter - 1;
		this.currentIter = 0;
		this.galleryInit = 0;
		this.galleryElements[parseInt(this.currentIter)].set(1);
		if (this.options.showInfopane)
			this.showInfoSlideShow.delay(1000, this);
		this.prepareTimer();
		if (this.options.embedLinks)
			this.makeLink(this.currentIter);
	},
	nextItem: function() {
		this.fireEvent('onNextCalled');
		this.nextIter = this.currentIter+1;
		if (this.nextIter >= this.maxIter)
			this.nextIter = 0;
		this.galleryInit = 0;
		this.goToByRedirect(this.nextIter);
	},
	prevItem: function() {
		this.fireEvent('onPreviousCalled');
		this.nextIter = this.currentIter-1;
		if (this.nextIter <= -1)
			this.nextIter = this.maxIter - 1;
		this.galleryInit = 0;
		this.goToByRedirect(this.nextIter);
	},
	goTo: function(num) {
		this.clearTimer();
		if (this.options.embedLinks)
			this.clearLink();
		if (this.options.showInfopane)
		{
			this.slideInfoZone.clearChain();
			this.hideInfoSlideShow().chain(this.changeItem.pass(num, this));
		} else
			this.changeItem.delay(500, this, num);
		if (this.options.embedLinks)
			this.makeLink(num);
		this.prepareTimer();
		/*if (this.options.showCarousel)
			this.clearThumbnailsHighlights();*/
	},
	goToByPhotoID: function(num) {
		this.goTo(this.convertPhotoIDToPosition(num));
	},
	goToByRedirect: function(num) {
		var photoID = this.convertPositionToPhotoID(num);	
		if (self.location.href.indexOf(photoID) == -1)
			self.location.href = self.location.href.substring(0, self.location.href.lastIndexOf("photo-id")) + "photo-id" + photoID;
	},
	convertPhotoIDToPosition: function(num) {
		for(i=0;i<this.galleryData.length;i++)
		{
			if (this.galleryData[i].photoID == num) return i;	
		}
	},
	convertPositionToPhotoID: function(num) {
		return this.galleryData[num].photoID;
	},
	changeItem: function(num) {
		this.fireEvent('onStartChanging');
		this.galleryInit = 0;
		if (this.currentIter != num)
		{
			for(i=0;i<this.maxIter;i++)
			{
				if ((i != this.currentIter)) this.galleryElements[i].set(0);
			}
			if (num > this.currentIter) this.galleryElements[num].custom(1);
			else
			{
				this.galleryElements[num].set(1);
				this.galleryElements[this.currentIter].custom(0);
			}
			this.currentIter = num;
		}
		this.populateTechinfo();
		this.doSlideShow.bind(this)();
		this.fireEvent('onChanged');
	},
	clearTimer: function() {
		if (this.options.timed)
			$clear(this.timer);
	},
	prepareTimer: function() {
		if (this.options.timed)
			this.timer = this.nextItem.delay(this.options.delay, this);
	},
	doSlideShow: function(position) {
		if (this.galleryInit == 1)
		{
			imgPreloader = new Image();
			imgPreloader.onload=function(){
				this.startSlideShow.delay(10, this);
			}.bind(this);
			imgPreloader.src = this.galleryData[0].image;
		} else {
			if (this.options.showInfopane)
			{
				if (this.options.showInfopane)
				{
					this.showInfoSlideShow.delay((500 + this.options.fadeDuration), this);
				} else
					if (this.options.showCarousel)
						this.centerCarouselOn(position);
			}
		}
	},








	initInfoButtons: function () {
		var InfoButtonsContainerElement = new Element('div').addClass('InfoButtonsContainer').injectInside(this.galleryElement);
		this.InfoButtonsContainer = new Fx.Styles(InfoButtonsContainerElement, {transition: Fx.Transitions.expoOut});
		this.InfoButtonsContainer.normalHeight = InfoButtonsContainerElement.offsetHeight;
		this.InfoButtonsContainer.set({'opacity': this.options.InfoButtonsMinimizedOpacity, 'top': (this.options.InfoButtonsMinimizedHeight - this.InfoButtonsContainer.normalHeight)});
		
		if (this.options.showCarousel)
		{
			this.ThumbnailsBtn = new Element('a').addClass('ThumbnailsBtn').setProperties({
				title: this.options.textShowCarousel
			}).setHTML(this.options.textShowCarousel).injectInside(InfoButtonsContainerElement);

			this.ThumbnailsBtn.addEvent(
				'click',
				function () {
					this.InfoButtonsContainer.clearTimer();
					this.hideTechinfo();
					this.showCarousel();		
				}.bind(this)
			);
		}


		if (this.options.showTechinfo)
		{
			this.TechinfoBtn = new Element('a').addClass('TechinfoBtn').setProperties({
				title: this.options.textShowTechinfo
			}).setHTML(this.options.textShowTechinfo).injectInside(InfoButtonsContainerElement);

			this.TechinfoBtn.addEvent(
				'click',
				function () {
					this.InfoButtonsContainer.clearTimer();
					this.hideCarousel();		
					this.showTechinfo();
				}.bind(this)
			);
		}



		this.InfoButtonsActive = false;

		var InfoButtonsElement = new Element('div').addClass('InfoButtons').injectInside(InfoButtonsContainerElement);
		this.InfoButtons = new Fx.Styles(InfoButtonsElement);
		
		this.InfoButtonsLabel = new Element('p').addClass('label').injectInside(this.InfoButtons.element);
		this.InfoButtonsWrapper = new Element('div').addClass('InfoButtonsWrapper').injectInside(this.InfoButtons.element);
		this.InfoButtonsInner = new Element('div').addClass('InfoButtonsInner').injectInside(this.InfoButtonsWrapper);

		this.InfoButtonsInner.style.width = ((this.maxIter * (this.options.thumbWidth + this.options.thumbSpacing)) - this.options.thumbSpacing + this.options.thumbWidth) + "px";

		//added by arkady to make InfoButtons always visible
		this.InfoButtonsContainer.custom({
			'opacity': this.options.InfoButtonsMaximizedOpacity
			,'top': 0
		});
	},





	initCarousel: function () {
		var carouselContainerElement = new Element('div').addClass('carouselContainer').injectInside(this.galleryElement);
		this.carouselContainer = new Fx.Styles(carouselContainerElement, {transition: Fx.Transitions.expoOut});
		this.carouselContainer.normalHeight = carouselContainerElement.offsetHeight;
		this.carouselContainer.set({'opacity': this.options.carouselMinimizedOpacity, 'top': (this.options.carouselMinimizedHeight - this.carouselContainer.normalHeight)});
		
		this.carouselActive = false;

		var carouselElement = new Element('div').addClass('carousel').injectInside(carouselContainerElement);
		this.carousel = new Fx.Styles(carouselElement);
		
		this.carouselLabel = new Element('p').addClass('label').injectInside(this.carousel.element);
		this.carouselWrapper = new Element('div').addClass('carouselWrapper').injectInside(this.carousel.element);
		this.carouselInner = new Element('div').addClass('carouselInner').injectInside(this.carouselWrapper);

		this.carouselWrapper.scroller = new Scroller(this.carouselWrapper, {
			area: 100,
			velocity: 0.2
		})
		
		this.carouselWrapper.elementScroller = new Fx.Scroll(this.carouselWrapper, {
			duration: 400,
			onStart: this.carouselWrapper.scroller.stop.bind(this.carouselWrapper.scroller),
			onComplete: this.carouselWrapper.scroller.start.bind(this.carouselWrapper.scroller)
		});

		this.constructThumbnails();

//		this.carouselInner.style.width = ((this.maxIter * (this.options.thumbWidth + this.options.thumbSpacing)) - this.options.thumbSpacing + this.options.thumbWidth) + "px";
		this.carouselInner.style.width = ((this.maxIter * (this.options.thumbWidth + this.options.thumbSpacing + 2))+this.options.thumbSpacing) + "px";

		
	},
	showCarousel: function () {
		if (this.options.showCarousel)
		{
			this.fireEvent('onShowCarousel');
			this.carouselContainer.custom({
				'opacity': this.options.carouselMaximizedOpacity,
				'top': 0
			}).addEvent('onComplete', function() { this.carouselActive = true; this.carouselWrapper.scroller.start(); }.bind(this));
		}
	},
	hideCarousel: function () {
		if (this.options.showCarousel)
		{
			this.fireEvent('onHideCarousel');
			this.carouselContainer.custom({
				'opacity': this.options.carouselMinimizedOpacity
				,'top': (this.options.carouselMinimizedHeight - this.carouselContainer.normalHeight -10)
			}).addEvent('onComplete', function() { this.carouselActive = false; this.carouselWrapper.scroller.stop(); }.bind(this));
		}
	},








	initTechinfo: function () {
		var TechinfoContainerElement = new Element('div').addClass('TechinfoContainer').injectInside(this.galleryElement);
		this.TechinfoContainer = new Fx.Styles(TechinfoContainerElement, {transition: Fx.Transitions.expoOut});
		this.TechinfoContainer.normalHeight = TechinfoContainerElement.offsetHeight;
		this.TechinfoContainer.set({'opacity': this.options.TechinfoMinimizedOpacity, 'top': (this.options.TechinfoMinimizedHeight - this.TechinfoContainer.normalHeight)});
		
		this.TechinfoActive = false;

		var TechinfoElement = new Element('div').addClass('Techinfo').injectInside(TechinfoContainerElement);
		this.Techinfo = new Fx.Styles(TechinfoElement);
		
		this.TechinfoLabel = new Element('p').addClass('label').injectInside(this.Techinfo.element);
		this.TechinfoWrapper = new Element('div').addClass('TechinfoWrapper').injectInside(this.Techinfo.element);
		this.TechinfoInner = new Element('div').addClass('TechinfoInner').injectInside(this.TechinfoWrapper);
		this.TechinfoInner.style.width = ((this.maxIter * (this.options.thumbWidth + this.options.thumbSpacing)) - this.options.thumbSpacing + this.options.thumbWidth) + "px";
	},
	showTechinfo: function () {
		if (this.options.showTechinfo)
		{
			this.fireEvent('onShowTechinfo');
			this.TechinfoContainer.custom({
				'opacity': this.options.TechinfoMaximizedOpacity,
				'top': 0
			}); 
		}
	},
	hideTechinfo: function () {
		if (this.options.showTechinfo)
		{
			this.fireEvent('onHideTechinfo');
			this.TechinfoContainer.custom({
				'opacity': this.options.TechinfoMinimizedOpacity,
				'top': (this.options.TechinfoMinimizedHeight - this.TechinfoContainer.normalHeight-10)
			}); 
		}
	},
	populateTechinfo: function() {
		var html = "";

		html = "" +
		"<table height=\"100%\" width=\"900\" > " + 
			"<tr>" +
				"<td> " +

					"<table>" +
						"<tr> " + 
							"<td width=\"80\">" +
								"<span class=\"linksHeading\">GoTo :</span><br />" + 
							"</td>" +
							"<td width=\"300\" align=\"left\" > " +
								"&nbsp;<a class=\"links\" href=\"index.php\">Home</a><br />" +
								"&nbsp;<a class=\"links\" href=\"photo_haiku.php\">Photo Haiku</a><br />" +
								"&nbsp;<a class=\"links\" href=\"contact_me.php\">Contact Me</a><br />" +
								"&nbsp;<a class=\"links\" href=\"links.php\">Links</a>" + 
							"</td> " +
						"</tr>"+
					"</table>"+
				"</td> "; 


		if (this.galleryData[this.currentIter].techInfo == "")
		{
		}
		else
		{
			html +=
				"<td> " +
					"<table>" +
						"<tr>"+
							"<td width=\"80\"> " +
								"<span class=\"TechInfoHeading\">TechInfo :</span><br /> "+
							"</td>" +
							"<td width=\"300\" align=\"left\" > " +
								"<span class=\"TechInfoText\">" + this.galleryData[this.currentIter].techInfo + "</span>" +
							"</td> " +
						"</tr>"+
					"</table>"+
				"</td> " ;
		}

		html += 
			"</tr> " + 
		"</table> "
		;

		this.TechinfoInner.innerHTML = html;
	},













	constructThumbnails: function () {
		if (this.options.showCarousel)
		{ 
			element = this.carouselInner;
			for(i=0;i<this.galleryData.length;i++)
			{
				var currentImg = new Fx.Style(new Element ('div').addClass("thumbnail").setStyles({
						backgroundImage: "url('" + this.galleryData[i].thumbnail + "')",
						backgroundPosition: "center center",
						backgroundRepeat: 'no-repeat',
						marginLeft: this.options.thumbSpacing + "px",
						width: this.options.thumbWidth + "px",
						height: this.options.thumbHeight + "px"
					}).injectInside(element), "opacity", {duration: 200}).set(0.2);
				currentImg.element.addEvents({
					'mouseover': function (myself) {
						myself.clearTimer();
						myself.custom(0.99);
						$(this.carouselLabel).setHTML('<span class="number">' + (myself.relatedImage.number + 1) + "/" + this.maxIter + ":</span> " + myself.relatedImage.title);
					}.pass(currentImg, this),
					'mouseout': function (myself) {
					myself.clearTimer();
					myself.custom(0.2);
					}.pass(currentImg, this),
					'click': function (myself) {
						this.goToByRedirect(myself.relatedImage.number);
					}.pass(currentImg, this)
				});
				
				currentImg.relatedImage = this.galleryData[i];
				this.thumbnailElements[parseInt(i)] = currentImg;
			}
		}
	},
	clearThumbnailsHighlights: function()
	{
		for(i=0;i<this.galleryData.length;i++)
		{
			this.thumbnailElements[i].clearTimer();
			this.thumbnailElements[i].custom(0.2);
		}
	},
	centerCarouselOn: function(num) {
		if (this.options.showCarousel)
		{ 
			var carouselElement = this.thumbnailElements[num];
			var position = carouselElement.element.offsetLeft + (carouselElement.element.offsetWidth / 2);
			var carouselWidth = this.carouselWrapper.offsetWidth;
			var carouselInnerWidth = this.carouselInner.offsetWidth;
			var diffWidth = carouselWidth / 2;
			var scrollPos = position-diffWidth;
			this.carouselWrapper.elementScroller.scrollTo(scrollPos,0);
		}
	}
	
});
gallery.implement(new Events);
gallery.implement(new Options);