// -----------------------------------------------------------------------------------
// 
// 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 = "files/photos/about_us/";

// Define each photo's name, height, width, and caption
var photoArray = new Array(
	// Source, Width, Height, Caption
	new Array("f00.jpg", "350", "350", "Our Logo"),
	new Array("f01.jpg", "460", "345", "Anderson’s Maple Syrup Employees: Steve, Alison, Janice, Norman, Fred"),
	new Array("f02.jpg", "460", "326", "Artist drawing of a Sugar House"),
	new Array("f03.jpg", "239", "350", "Our favorite Maple Tree"),
	new Array("f03a.jpg", "460", "338", "More Fall colors"),
	new Array("f04.jpg", "460", "307", "Trees are tapped in the Spring"),
	new Array("f05.jpg", "264", "350", "When weather permits the sap will drip"),
	new Array("f05a.jpg", "460", "312", "Gathering the sap into 5 gallon pails"),
	new Array("f05b.jpg", "237", "350", "Pouring sap into a tank to transport it to the Sugar House"),
	new Array("f06.jpg", "453", "350", "Sugar House were syrup is made"),
	new Array("f06a.jpg", "460", "350", "Another Sugar House in Summer"),
	new Array("f06b.jpg", "460", "342", "Steaming Sugar House in Spring"),
	new Array("f07a.jpg", "460", "309", "Putting wood into the evaporator"),
	new Array("f07b.jpg", "234", "350", "Paul Anderson over seeing the evaporators"),
	new Array("f07c.jpg", "460", "300", "Norman Anderson over seeing the finished syrup"),
	new Array("f07d.jpg", "460", "308", "Enjoying the wonderful smell"),
	new Array("f08.jpg", "460", "324", "Grading of Maple syrup by color and flavor"),
	new Array("f09.jpg", "402", "350", "Bottling Maple Syrup"),
	new Array("f10.jpg", "385", "350", "Putting on covers"),
	new Array("f11.jpg", "460", "345", "Finished Product"),
	new Array("f12.jpg", "448", "350", "Maple Syrup Jugs"),
	new Array("f13.jpg", "460", "326", "Maple Syrup Tins"),
	new Array("f14.jpg", "456", "350", "Maple Syrup Leaves"),
	new Array("f14a.jpg", "460", "256", "Our new bottling building")
	);

// 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');setTimeout("doNext()", 5000);}});
	},
	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();
}

function doNext() {
	var myPhoto = new Slideshow(photoId);
	myPhoto.nextPhoto()
}