/*
This file is part of JonDesign's SmoothGallery v1.0.1.

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 2 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.
Many thanks to:
- The mootools team for the great mootools lib, and it's help and support throughout the project.
*/


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,
	showInfopane: true,
	thumbHeight: 75,
	thumbWidth: 100,
	thumbSpacing: 10,
	embedLinks: true,
	fadeDuration: 500,
	timed: false,
	delay: 9000,
	preloader: true,
	manualData: [],
	populateData: true,
	elementSelector: "div.imageElement",
	titleSelector: "h3",
	subtitleSelector: "p",
	linkSelector: "a.open",
	imageSelector: "img.full",
	thumbnailSelector: "img.thumbnail",
	slideInfoZoneOpacity: 0.7,
	carouselMinimizedOpacity: 0.4,
	carouselMinimizedHeight: 20,
	carouselMaximizedOpacity: 0.7, 
	destroyAfterPopulate: true,
	baseClass: 'jdGallery',
	withArrowsClass: 'withArrows',
	textShowCarousel: 'Pictures',
	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.showInfopane) this.initInfoSlideshow();
if (this.options.showCarousel) this.initCarousel();
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
	};
	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('photos_01').setStyles({
			'position':'absolute',
			'left':'0px',
			'right':'0px',
			'margin':'0 0 0 0px',
			'padding':'0px',
			'backgroundImage':"url('" + this.galleryData[i].image + "')",
			'backgroundPosition':"0 0",
			'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.goTo(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.goTo(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();*/
},
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.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);
	}
}
},
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.carouselBtn = new Element('a').addClass('carouselBtn').setProperties({
	title: this.options.textShowCarousel
}).setHTML(this.options.textShowCarousel).injectInside(carouselContainerElement);

this.carouselBtn.addEvent(
	'click',
	function () {
		this.carouselContainer.clearTimer();
		this.toggleCarousel();
	}.bind(this)
);
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";
},
toggleCarousel: function() {
if (this.carouselActive)
	this.hideCarousel();
else
	this.showCarousel();
},
showCarousel: function () {
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 () {
this.fireEvent('onHideCarousel');
this.carouselContainer.custom({
	'opacity': this.options.carouselMinimizedOpacity,
	'top': (this.options.carouselMinimizedHeight - this.carouselContainer.normalHeight)
}).addEvent('onComplete', function() { this.carouselActive = false; this.carouselWrapper.scroller.stop(); }.bind(this));
},
constructThumbnails: function () {
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.goTo(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) {
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);
},
initInfoSlideshow: function() {
/*if (this.slideInfoZone.element)
	this.slideInfoZone.element.remove();*/
this.slideInfoZone = new Fx.Styles(new Element('div').addClass('slideInfoZone').injectInside($(this.galleryElement))).set({'opacity':0});
var slideInfoZoneTitle = new Element('h2').injectInside(this.slideInfoZone.element);
var slideInfoZoneDescription = new Element('p').injectInside(this.slideInfoZone.element);
this.slideInfoZone.normalHeight = this.slideInfoZone.element.offsetHeight;
this.slideInfoZone.element.setStyle('opacity',0);
},
changeInfoSlideShow: function()
{
this.hideInfoSlideShow.delay(10, this);
this.showInfoSlideShow.delay(500, this);
},
showInfoSlideShow: function() {
this.fireEvent('onShowInfopane');
this.slideInfoZone.clearTimer();
element = this.slideInfoZone.element;
element.getElement('h2').setHTML(this.galleryData[this.currentIter].title);
element.getElement('p').setHTML(this.galleryData[this.currentIter].description);
this.slideInfoZone.custom({'opacity': [0, this.options.slideInfoZoneOpacity], 'height': [0, this.slideInfoZone.normalHeight]});
if (this.options.showCarousel)
	this.slideInfoZone.chain(this.centerCarouselOn.pass(this.currentIter, this));
return this.slideInfoZone;
},
hideInfoSlideShow: function() {
this.fireEvent('onHideInfopane');
this.slideInfoZone.clearTimer();
this.slideInfoZone.custom({'opacity': 0, 'height': 0});
return this.slideInfoZone;
},
makeLink: function(num) {
this.currentLink.setProperties({
	href: this.galleryData[num].link,
	title: this.galleryData[num].linkTitle
})
if (!((this.options.embedLinks) && (!this.options.showArrows) && (!this.options.showCarousel)))
	this.currentLink.setStyle('display', 'block');
},
clearLink: function() {
this.currentLink.setProperties({href: '', title: ''});
if (!((this.options.embedLinks) && (!this.options.showArrows) && (!this.options.showCarousel)))
	this.currentLink.setStyle('display', 'none');
}
});
gallery.implement(new Events);
gallery.implement(new Options);

/* All code copyright 2006 Jonathan Schemoul */