// -----------------------------------------------------------------------------------
// 
// This page coded by Scott Upton
// http://www.uptonic.com | http://www.couloir.org
//
// This work is licensed under a Creative Commons License
// Attribution-ShareAlike 2.0
// http://creativecommons.org/licenses/by-sa/2.0/
//
// Associated APIs copyright their respective owners
//
// -----------------------------------------------------------------------------------
// --- version date: 11/28/05 --------------------------------------------------------

// get current photo id from URL
var thisURL = document.location.href;
var splitURL = thisURL.split("#");
var photoId = splitURL[1] - 1;

// if no photoId supplied then set default
var photoId = (!photoId)? 0 : photoId;

// CSS border size x 2
var borderSize = 10;

// Photo directory for this gallery
var photoDir = "pic/";

// Define each photo's name, height, width, and caption
var photoArray = new Array(
	// Source, Width, Height, Caption
	new Array("1.jpg", "420", "504", "Cover of Two Fish."),
	new Array("2.jpg", "340", "504", "Politics and Religion."),
	new Array("3.jpg", "348", "504", "Truck Sprite."),
	new Array("4.jpg", "326", "504", "Love Dance."),
	new Array("5.jpg", "310", "504", "Louie V."),
	new Array("6.jpg", "720", "469", "Sleeping Man."),
	new Array("7.jpg", "720", "494", "Asian Seduction."),
	new Array("8.jpg", "331", "504", "Gorilla."),
	new Array("9.jpg", "331", "504", "Mountain Man."),
	new Array("10.jpg", "338", "504", "Buddha's Head."),
	new Array("11.jpg", "720", "478", "Deserted Wife."),
	new Array("12.jpg", "332", "504", "Smoker."),
	new Array("13.jpg", "298", "504", "Mother's Medicine."),
	new Array("14.jpg", "720", "483", "A Visitor."),
	new Array("15.jpg", "720", "454", "The Guru."),
	new Array("16.jpg", "340", "504", "Peacock and the Tree."),
	new Array("17.jpg", "720", "461", "Styro Fish."),
	new Array("18.jpg", "347", "504", "Bunny Love."),
	new Array("19.jpg", "720", "463", "Chinese Cabbage."),
	new Array("20.jpg", "720", "473", "Sleeping Gator."),
	new Array("21.jpg", "720", "448", "Car."),
	new Array("22.jpg", "720", "498", "Drowned Bike."),
	new Array("23.jpg", "720", "508", "Cherry Coke."),
	new Array("24.jpg", "720", "472", "Two Slides."),
	new Array("25.jpg", "720", "513", "Gardeners."),
	new Array("26.jpg", "720", "471", "Discipline."),
	new Array("27.jpg", "720", "468", "Light Modulator."),
	new Array("28.jpg", "347", "504", "Kudzu and Ca.r"),
	new Array("29.jpg", "720", "475", "Better Half."),
	new Array("30.jpg", "327", "504", "Empty Pockets."),
	new Array("31.jpg", "720", "477", "On the Path."),
	new Array("32.jpg", "720", "477", "Stairs, Osaka."),
	new Array("33.jpg", "720", "484", "Discarded Bike."),
	new Array("34.jpg", "720", "483", "Dirty Book."),
	new Array("35.jpg", "720", "486", "Sakura and Sewer."),
	new Array("36.jpg", "334", "504", "Chaos Wall."),
	new Array("37.jpg", "720", "470", "See/Sea Wall.")
	);

// Number of photos in this gallery
var photoNum = photoArray.length;

/*--------------------------------------------------------------------------*/

// Additional methods for Element added by SU, Couloir
Object.extend(Element, {
	getWidth: function(element) {
   	element = $(element);
   	return element.offsetWidth; 
	},
	setWidth: function(element,w) {
   	element = $(element);
    	element.style.width = w +"px";
	},
	setHeight: function(element,h) {
   	element = $(element);
    	element.style.height = h +"px";
	},
	setSrc: function(element,src) {
    	element = $(element);
    	element.src = src; 
	},
	setHref: function(element,href) {
    	element = $(element);
    	element.href = href; 
	},
	setInnerHTML: function(element,content) {
		element = $(element);
		element.innerHTML = content;
	}
});

/*--------------------------------------------------------------------------*/

var Slideshow = Class.create();

Slideshow.prototype = {
	initialize: function(photoId) {
		this.photoId = photoId;
		this.photo = 'Photo';
		this.photoBox = 'Container';
		this.prevLink = 'PrevLink';
		this.nextLink = 'NextLink';
		this.captionBox = 'CaptionContainer';
		this.caption = 'Caption';
		this.counter = 'Counter';
		this.loader = 'Loading';
	},
	getCurrentSize: function() {
		// Get current height and width, subtracting CSS border size
		this.wCur = Element.getWidth(this.photoBox) - borderSize;
		this.hCur = Element.getHeight(this.photoBox) - borderSize;
	},
	getNewSize: function() {
		// Get current height and width
		this.wNew = photoArray[photoId][1];
		this.hNew = photoArray[photoId][2];
	},
	getScaleFactor: function() {
		this.getCurrentSize();
		this.getNewSize();
		// Scalars based on change from old to new
		this.xScale = (this.wNew / this.wCur) * 100;
		this.yScale = (this.hNew / this.hCur) * 100;
	},
	setNewPhotoParams: function() {
		// Set source of new image
		Element.setSrc(this.photo,photoDir + photoArray[photoId][0]);
		// Set anchor for bookmarking
		Element.setHref(this.prevLink, "#" + (photoId+1));
		Element.setHref(this.nextLink, "#" + (photoId+1));
	},
	setPhotoCaption: function() {
		// Add caption from gallery array
		Element.setInnerHTML(this.caption,photoArray[photoId][3]);
		Element.setInnerHTML(this.counter,((photoId+1)+'/'+photoNum));
	},
	resizePhotoBox: function() {
		this.getScaleFactor();
		new Effect.Scale(this.photoBox, this.yScale, {scaleX: false, duration: 0.3, queue: 'front'});
		new Effect.Scale(this.photoBox, this.xScale, {scaleY: false, delay: 0.5, duration: 0.3});
		// Dynamically resize caption box as well
		Element.setWidth(this.captionBox,this.wNew-(-borderSize));
	},
	showPhoto: function(){
		new Effect.Fade(this.loader, {delay: 0.5, duration: 0.3});
		// Workaround for problems calling object method "afterFinish"
		new Effect.Appear(this.photo, {duration: 0.5, queue: 'end', afterFinish: function(){Element.show('CaptionContainer');Element.show('PrevLink');Element.show('NextLink');}});
	},
	nextPhoto: function(){
		// Figure out which photo is next
		(photoId == (photoArray.length - 1)) ? photoId = 0 : photoId++;
		this.initSwap();
	},
	prevPhoto: function(){
		// Figure out which photo is previous
		(photoId == 0) ? photoId = photoArray.length - 1 : photoId--;
		this.initSwap();
	},
	initSwap: function() {
		// Begin by hiding main elements
		Element.show(this.loader);
		Element.hide(this.photo);
		Element.hide(this.captionBox);
		Element.hide(this.prevLink);
		Element.hide(this.nextLink);
		// Set new dimensions and source, then resize
		this.setNewPhotoParams();
		this.resizePhotoBox();
		this.setPhotoCaption();
	}
}

/*--------------------------------------------------------------------------*/

// Establish CSS-driven events via Behaviour script
var myrules = {
	'#Photo' : function(element){
		element.onload = function(){
			var myPhoto = new Slideshow(photoId);
			myPhoto.showPhoto();
		}
	},
	'#PrevLink' : function(element){
		element.onmouseover = function(){
			//soundManager.play('beep');
		}
		element.onclick = function(){
			var myPhoto = new Slideshow(photoId);
			myPhoto.prevPhoto();
			//soundManager.play('select');
		}
	},
	'#NextLink' : function(element){
		element.onmouseover = function(){
			//soundManager.play('beep');
		}
		element.onclick = function(){
			var myPhoto = new Slideshow(photoId);
			myPhoto.nextPhoto();
			//soundManager.play('select');
		}
	},
	a : function(element){
		element.onfocus = function(){
			this.blur();
		}
	}
};

// Add window.onload event to initialize
Behaviour.addLoadEvent(init);
Behaviour.apply();
function init() {
	var myPhoto = new Slideshow(photoId);
	myPhoto.initSwap();
	//soundManagerInit();
}