/*
    This file is part of JonDesign's SmoothGallery v2.0.

    JonDesign's SmoothGallery is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    JonDesign's SmoothGallery is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with JonDesign's SmoothGallery; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Main Developer: Jonathan Schemoul (JonDesign: http://www.jondesign.net/)
    Contributed code by:
    - Christian Ehret (bugfix)
	- Nitrix (bugfix)
	- Valerio from Mad4Milk for his great help with the carousel scrolling and many other things.
	- Archie Cowan for helping me find a bugfix on carousel inner width problem.
	- Tomocchino from #mootools for the preloader class
	Many thanks to:
	- The mootools team for the great mootools lib, and it's help and support throughout the project.
*/

// declaring the class
var gallery = {
	initialize: function(element, options) {
		this.setOptions({
			showArrows: true,
			showCarousel: true,
			showInfopane: true,
			embedLinks: true,
			fadeDuration: 500,
			timed: false,
			delay: 7000,
			preloader: true,
			preloaderImage: true,
			preloaderErrorImage: true,
			/* Data retrieval */
			manualData: [],
			populateFrom: false,
			populateData: true,
			destroyAfterPopulate: true,
			elementSelector: "div.imageElement",
			titleSelector: "h3",
			subtitleSelector: "p",
			linkSelector: "a.open",
			imageSelector: "img.full",
			thumbnailSelector: "img.thumbnail",
			defaultTransition: "fade",
			/* InfoPane options */
			slideInfoZoneOpacity: 0.9,
			slideInfoZoneSlide: true,
			/* Carousel options */
			carouselMinimizedOpacity: 0.4,
			carouselMinimizedHeight: 20,
			carouselMaximizedOpacity: 0.9,
			thumbHeight: 75,
			thumbWidth: 100,
			thumbSpacing: 10,
			thumbIdleOpacity: 0.2,
			textShowCarousel: 'Pictures',
			showCarouselLabel: true,
			thumbCloseCarousel: true,
			useThumbGenerator: false,
			thumbGenerator: 'resizer.php',
			useExternalCarousel: false,
			carouselElement: false,
			carouselHorizontal: true,
			activateCarouselScroller: true,
			carouselPreloader: true,
			textPreloadingCarousel: 'Loading...',
			/* CSS Classes */
			baseClass: 'jdGallery',
			withArrowsClass: 'withArrows',
			/* Plugins: HistoryManager */
			useHistoryManager: false,
			customHistoryKey: false
		}, 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);
		
		this.populateFrom = element;
		if (this.options.populateFrom)
			this.populateFrom = this.options.populateFrom;		
		if (this.options.populateData)
			this.populateData();
		element.style.display="block";
		
		if (this.options.useHistoryManager)
			this.initHistory();
		
		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 ((this.galleryData.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.showInfopane) this.initInfoSlideshow();
		if (this.options.showCarousel) this.initCarousel();
		this.doSlideShow(1);
	},
	populateData: function() {
		currentArrayPlace = this.galleryData.length;
		options = this.options;
		var data = $A(this.galleryData);
		data.extend(this.populateGallery(this.populateFrom, currentArrayPlace));
		this.galleryData = data;
		this.fireEvent('onPopulated');
	},
	populateGallery: function(element, startNumber) { 
		var data = [];
		options = this.options;
		currentArrayPlace = startNumber;
		element.getElements(options.elementSelector).each(function(el) {
			elementDict = {
				image: el.getElement(options.imageSelector).getProperty('src'),
				number: currentArrayPlace,
				transition: this.options.defaultTransition
			};
			elementDict.extend = $extend;
			if ((options.showInfopane) | (options.showCarousel))
				elementDict.extend({
					title: el.getElement(options.titleSelector).innerHTML,
					description: el.getElement(options.subtitleSelector).innerHTML
				});
			if (options.embedLinks)
				elementDict.extend({
					link: el.getElement(options.linkSelector).href||false,
					linkTitle: el.getElement(options.linkSelector).title||false,
					linkTarget: el.getElement(options.linkSelector).getProperty('target')||false
				});
			if ((!options.useThumbGenerator) && (options.showCarousel))
				elementDict.extend({
					thumb