// -----------------------------------------------------------------------------------
//	Lightbox v2.02
//	by Lokesh Dhakar - http://www.huddletogether.com
//	3/31/06
//
//  Modified by Pierre-Olivier Chartrand
//  To support ajax calls and load html into a div
//  17/05/2006
// -----------------------------------------------------------------------------------

//
//	Configuration
//
var fileLoadingImage = "/images/dakis_loading.gif";		
var fileBottomNavCloseImage = "/images/closelabel_en.gif";
var resizeSpeed = 8;	// controls the speed of the image resizing (1=slowest and 10=fastest)
var borderSize = 10;	//if you adjust the padding in the CSS, you will need to update this variable

// -----------------------------------------------------------------------------------

//
//	Global Variables
//
var htmlCaption = "";
var imageArray = new Array;
var activeImage;
var overlay_opacity;
var ofLabel = "of";

if(resizeSpeed > 10){ resizeSpeed = 10;}
if(resizeSpeed < 1){ resizeSpeed = 1;}
resizeDuration = (11 - resizeSpeed) * 0.15;

// -----------------------------------------------------------------------------------

//
//	Additional methods for Element added by SU, Couloir
//	- further additions by Lokesh Dhakar (huddletogether.com)
//
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";
	},
	setTop: function(element,t) {
	   	element = $(element);
    	element.style.top = t +"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;
	}
});

// -----------------------------------------------------------------------------------

//
//	Extending built-in Array object
//	- array.removeDuplicates()
//	- array.empty()
//
Array.prototype.removeDuplicates = function () {
	for(i = 1; i < this.length; i++){
		if(this[i][0] == this[i-1][0]){
			this.splice(i,1);
		}
	}
}

// -----------------------------------------------------------------------------------

Array.prototype.empty = function () {
	for(i = 0; i <= this.length; i++){
		this.shift();
	}
}

var Lightbox = Class.create();

Lightbox.prototype = {
	
	initialize: function( rel ) {	
		
		var objBody = document.getElementsByTagName("body").item(0);
		
		var objOverlay = document.createElement("div");
		objOverlay.setAttribute('id','overlay');
		objOverlay.style.display = 'none';
		objOverlay.onclick = function() { myLightbox.end(); return false; }
		objBody.appendChild(objOverlay);
		overlay_opacity = $('overlay').getOpacity();

		var objLightbox = document.createElement("div");
		objLightbox.setAttribute('id','lightbox');
		objLightbox.style.display = 'none';
		objBody.appendChild(objLightbox);
		
		var objOuterImageContainer = document.createElement("div");
		objOuterImageContainer.setAttribute('id','outerImageContainer');
		objLightbox.appendChild(objOuterImageContainer);

        //Added by PO
        var objHtmlContainer = document.createElement("div");
        objHtmlContainer.setAttribute('id', 'htmlContainer');        
        objOuterImageContainer.appendChild(objHtmlContainer);
        //End added

		var objImageContainer = document.createElement("div");
		objImageContainer.setAttribute('id','imageContainer');
		objOuterImageContainer.appendChild(objImageContainer);
	
		var objLightboxImage = document.createElement("img");
		objLightboxImage.setAttribute('id','lightboxImage');
		objImageContainer.appendChild(objLightboxImage);
	
		var objHoverNav = document.createElement("div");
		objHoverNav.setAttribute('id','hoverNav');
		objImageContainer.appendChild(objHoverNav);
	
		var objPrevLink = document.createElement("a");
		objPrevLink.setAttribute('id','prevLink');
		objPrevLink.setAttribute('href','#');
		objHoverNav.appendChild(objPrevLink);
		
		var objNextLink = document.createElement("a");
		objNextLink.setAttribute('id','nextLink');
		objNextLink.setAttribute('href','#');
		objHoverNav.appendChild(objNextLink);
	
		var objLoading = document.createElement("div");
		objLoading.setAttribute('id','loading');
		objLoading.onclick = function() { myLightbox.end(); return false; }
		objImageContainer.appendChild(objLoading);
	
		var objImageDataContainer = document.createElement("div");
		objImageDataContainer.setAttribute('id','imageDataContainer');
		objImageDataContainer.className = 'clearfix';
		objLightbox.appendChild(objImageDataContainer);
		//objOuterImageContainer.appendChild(objImageDataContainer);

		var objImageData = document.createElement("div");
		objImageData.setAttribute('id','imageData');
		objImageDataContainer.appendChild(objImageData);
	
		var objImageDetails = document.createElement("div");
		objImageDetails.setAttribute('id','imageDetails');
		objImageData.appendChild(objImageDetails);
	
		var objCaption = document.createElement("span");
		objCaption.setAttribute('id','caption');
		objImageDetails.appendChild(objCaption);
	
		var objNumberDisplay = document.createElement("span");
		objNumberDisplay.setAttribute('id','numberDisplay');
		objImageDetails.appendChild(objNumberDisplay);
		
		var objBottomNav = document.createElement("div");
		objBottomNav.setAttribute('id', this.bottom_controls_id );
		objImageData.appendChild(objBottomNav);	
	},
	
	bottom_controls_id: 'bottomNav',
	
	init_anchors: function(){

	  if (!document.getElementsByTagName){ return; }
		  var anchors = document.getElementsByTagName('a');

		// loop through all anchor tags
		for (var i=0; i<anchors.length; i++)
		{
			var anchor = anchors[i];
			var relAttribute = String(anchor.getAttribute('rel'));
			
      // use the string.match() method to catch 'lightbox_remote' references in the rel attribute
			if (anchor.getAttribute('href') && (relAttribute.toLowerCase().match('lightbox_dialog')))
			{
				anchor.onclick = function () {myLightbox.start_remote(this, true, null );return false;}; 
				continue;
			}
      
      if (anchor.getAttribute('href') && (relAttribute.toLowerCase().match('lightbox_remote')))
      {
        anchor.onclick = function () {myLightbox.start_remote(this, false, null);return false;}; 
        continue;
			}
       
			// use the string.match() method to catch 'lightbox' references in the rel attribute
      if (anchor.getAttribute('href') && (relAttribute.toLowerCase().match('lightbox_image')))
      {
        anchor.onclick = function () {myLightbox.start(this);return false;}; 
        continue;
			} 
		}	
	},
	
	popupExtended:function( url, options )
	{			
		var withDefault = function(value, defaultValue){ return ( value == null || value == undefined ) ? defaultValue : value; }
		var nullFunction = function(){};
	
		options = $H(options || {});	
		var title = withDefault(options['title'], '');
		var dialogMode = withDefault(options['dialogMode'], false);
		var width = withDefault(options['width'], 500);
		var showButtons = withDefault(options['showButtons'], true);
		var onRequestComplete = withDefault(options['onRequestComplete'], nullFunction);
		var onOk = withDefault(options['onOk'], nullFunction); ;
		var onCancel = withDefault(options['onCancel'], nullFunction);
		
		
		hideSelectBoxes();

		// stretch overlay to fill page and fade in
		this.showOverlay();
		
		// calculate top offset for the lightbox and display 
		var arrayPageSize = getPageSize();
		var arrayPageScroll = getPageScroll();
		var lightboxTop = arrayPageScroll[1] + (arrayPageSize[3] / 15);

		Element.setTop('lightbox', lightboxTop);
		Element.show('lightbox');
		
		// hide elements during transition
		this.clear_html();
		$('caption').innerHTML = "";
		Element.show('loading');
		Element.hide('lightboxImage');
		Element.hide('htmlContainer');
		Element.hide('hoverNav');
		Element.hide('prevLink');
		Element.hide('nextLink');
		Element.show('bottomNavClose');
		Element.show('lb_bottom_ok');
		Element.show('lb_bottom_cancel');
		
		if( dialogMode )
		{
			Element.hide( 'bottomNavClose' );
			
			$('lb_bottom_ok').onclick = function(){ onOk(); myLightbox.end(); }
			$('lb_bottom_cancel').onclick = function(){ onCancel(); myLightbox.end(); }
			$('overlay').onclick = function(){ onCancel(); myLightbox.end(); };
			$('loading').onclick = function(){ onCancel(); myLightbox.end(); };
			
			if( showButtons )
			{
				Element.show('lb_bottom_ok');
				Element.show('lb_bottom_cancel');
			}
			else
			{
				Element.hide('lb_bottom_ok');
				Element.hide('lb_bottom_cancel');
			}
		}
		else
		{
			$('lb_bottom_ok').onclick = null;
			$('lb_bottom_cancel').onclick = null;
			$('overlay').onclick = function() { myLightbox.end(); return false; }
			$('loading').onclick = function() { myLightbox.end(); return false; }
			Element.hide('lb_bottom_ok');
			Element.hide('lb_bottom_cancel');
		}
		
		Element.hide('numberDisplay');
		
		htmlCaption = title;  	    
		new Ajax.Updater( 'htmlContainer', url , { asynchronous:true, method:'GET', onComplete: function(){myLightbox.on_html_update(width); onRequestComplete(); } } );
		
	},
	
	popup:function( url, title, dialog_mode, ok_fct, cancel_fct, width )
	{		
		this.popupExtended( url, {title: title, dialogMode: dialog_mode, onOk: ok_fct, onCancel: cancel_fct, width: width} );
	},
	
    start_remote: function(descLink, dialog_mode, ok_fct ) {
        var url = descLink.getAttribute('href');
		this.popup( url, descLink.getAttribute('title'), dialog_mode, ok_fct );
    },
    
  on_html_update: function( width )
  {
    if( !width )
      width = 495;
   
    //We set the width to the htmlContainer so that the calculated height is correct
    Element.setWidth( 'htmlContainer', width);
    
    var height = Element.getDimensions($('htmlContainer')).height;
    if( height < 50 )
      height = 50;
    
    this.resizeImageContainer(width, height);
    this.showInnerHtml();
  },
  
  clear_html: function()
  {
    $('htmlContainer').innerHTML = '';
  },
  
	//
	//	start()
	//	Display overlay and lightbox. If image is part of a set, add siblings to imageArray.
	//
	start: function(imageLink) {

		hideSelectBoxes();
		$('caption').innerHTML = "";

		// stretch overlay to fill page and fade in
		this.showOverlay();

		imageArray = [];
		imageNum = 0;		

		if (!document.getElementsByTagName){ return; }
		var anchors = document.getElementsByTagName('a');

		// if image is NOT part of a set..
		if((imageLink.getAttribute('rel') == 'lightbox_image')){
			// add single image to imageArray
			imageArray.push(new Array(imageLink.getAttribute('href'), imageLink.getAttribute('title')));			
		} else {
		// if image is part of a set..

			// loop through anchors, find other images in set, and add them to imageArray
			for (var i=0; i<anchors.length; i++){
				var anchor = anchors[i];
				if (anchor.getAttribute('href') && (anchor.getAttribute('rel') == imageLink.getAttribute('rel'))){
					imageArray.push(new Array(anchor.getAttribute('href'), anchor.getAttribute('title')));
				}
			}
			imageArray.removeDuplicates();
			while(imageArray[imageNum][0] != imageLink.getAttribute('href')) { imageNum++;}
		}

		// calculate top offset for the lightbox and display 
		var arrayPageSize = getPageSize();
		var arrayPageScroll = getPageScroll();
		var lightboxTop = arrayPageScroll[1] + (arrayPageSize[3] / 15);

		Element.setTop('lightbox', lightboxTop);
		Element.show('lightbox');
		
		this.changeImage(imageNum);
	},

  showOverlay: function()
  {
    var arrayPageSize = getPageSize();
    Element.setHeight('overlay', arrayPageSize[1]);
		new Effect.Appear('overlay', { duration: 0.2, from: 0.0, to: overlay_opacity });
  },

	//
	//	changeImage()
	//	Hide most elements and preload image in preparation for resizing image container.
	//
	changeImage: function(imageNum) {	
		
		activeImage = imageNum;	// update global var

		// hide elements during transition
		Element.show('loading');
		Element.hide('htmlContainer');
    	this.clear_html();
		Element.hide('lightboxImage');
		Element.hide('hoverNav');
		Element.hide('prevLink');
		Element.hide('nextLink');
		Element.show( 'bottomNavClose' );
		Element.hide('lb_bottom_ok');
		Element.hide('lb_bottom_cancel');
		//Element.hide('imageDataContainer');
		Element.hide('numberDisplay');
		
		imgPreloader = new Image();
		
		// once image is preloaded, resize image container
		imgPreloader.onload=function(){
			Element.setSrc('lightboxImage', imageArray[activeImage][0]);
			myLightbox.resizeImageContainer(imgPreloader.width, imgPreloader.height);
            myLightbox.showImage();
		}
		imgPreloader.src = imageArray[activeImage][0];
	},

	//
	//	resizeImageContainer()
	//
	resizeImageContainer: function( imgWidth, imgHeight) {

		// get current height and width
		this.wCur = Element.getWidth('outerImageContainer');
		this.hCur = Element.getHeight('outerImageContainer');

		// scalars based on change from old to new
		this.xScale = ((imgWidth  + (borderSize * 2)) / this.wCur) * 100;
		this.yScale = ((imgHeight  + (borderSize * 2)) / this.hCur) * 100;

		// calculate size difference between new and old image, and resize if necessary
		wDiff = (this.wCur - borderSize * 2) - imgWidth;
		hDiff = (this.hCur - borderSize * 2) - imgHeight;

		if(!( hDiff == 0)){ new Effect.Scale('outerImageContainer', this.yScale, {scaleX: false, scaleContent:false, duration: resizeDuration, queue: 'front'}); }
		if(!( wDiff == 0))
		{ 
			var scale = (imgWidth + (borderSize * 2))/Element.getWidth('imageDataContainer')*100;
			new Effect.Parallel(
				[ new Effect.Scale('outerImageContainer', this.xScale, {scaleY: false, scaleContent:false, delay: resizeDuration, duration: resizeDuration}), 
				  new Effect.Scale('imageDataContainer', scale, {scaleContent:false, scaleY: false, scaleContent:false, delay: resizeDuration, duration: resizeDuration}) ], 
				{ duration: resizeDuration } 
			);
		}

		// if new and old image are same size and no scaling transition is necessary, 
		// do a quick pause to prevent image flicker.
		if((hDiff == 0) && (wDiff == 0)){
			if (navigator.appVersion.indexOf("MSIE")!=-1){ pause(250); } else { pause(100);} 
		}

		Element.setHeight('prevLink', imgHeight);
		Element.setHeight('nextLink', imgHeight);
		//Element.setWidth( 'imageDataContainer', imgWidth + (borderSize * 2));
	},
	
	//
	//	showImage()
	//	Display image and begin preloading neighbors.
	//
	showImage: function(){
		Element.hide('loading');
		new Effect.Appear('lightboxImage', { duration: 0.4, queue: 'end', afterFinish: function(){	myLightbox.updateDetails(); } });
		this.preloadNeighborImages();
	},

    //Added by PO
    showInnerHtml: function()
    {
        Element.hide('loading');
        new Effect.Appear('htmlContainer', { duration: 0.4, queue: 'end', afterFinish: function(){	myLightbox.udpateHtmlDetails(); } });
    },
    
    udpateHtmlDetails: function()
    {
        Element.show('caption');
		Element.setInnerHTML( 'caption', htmlCaption);		
    },    
    //End added

	//
	//	updateDetails()
	//	Display caption, image number, and bottom nav.
	//
	updateDetails: function() {
	
		Element.show('caption');
		Element.setInnerHTML( 'caption', imageArray[activeImage][1]);
		
	},

	//
	//	updateNav()
	//	Display appropriate previous and next hover navigation.
	//
	updateNav: function() {

		
	},

	//
	//	enableKeyboardNav()
	//
	enableKeyboardNav: function() {
		document.onkeydown = this.keyboardAction; 
	},

	//
	//	disableKeyboardNav()
	//
	disableKeyboardNav: function() {
		document.onkeydown = '';
	},

	//
	//	keyboardAction()
	//
	keyboardAction: function(e) {
		if (e == null) { // ie
			keycode = event.keyCode;
		} else { // mozilla
			keycode = e.which;
		}

		key = String.fromCharCode(keycode).toLowerCase();
		
		if((key == 'x') || (key == 'o') || (key == 'c')){	// close lightbox
			myLightbox.end();
		} else if(key == 'p'){	// display previous image
			if(activeImage != 0){
				myLightbox.disableKeyboardNav();
				myLightbox.changeImage(activeImage - 1);
			}
		} else if(key == 'n'){	// display next image
			if(activeImage != (imageArray.length - 1)){
				myLightbox.disableKeyboardNav();
				myLightbox.changeImage(activeImage + 1);
			}
		}


	},

	//
	//	preloadNeighborImages()
	//	Preload previous and next images.
	//
	preloadNeighborImages: function(){

		if((imageArray.length - 1) > activeImage){
			preloadNextImage = new Image();
			preloadNextImage.src = imageArray[activeImage + 1][0];
		}
		if(activeImage > 0){
			preloadPrevImage = new Image();
			preloadPrevImage.src = imageArray[activeImage - 1][0];
		}
	
	},

	//
	//	end()
	//
	end: function() {
		this.disableKeyboardNav();
		Element.hide('lightbox');
		new Effect.Fade('overlay', { duration: 0.2});
		showSelectBoxes();
	}
}

// -----------------------------------------------------------------------------------

//
// getPageScroll()
// Returns array with x,y page scroll values.
// Core code from - quirksmode.org
//
function getPageScroll(){

	var yScroll;

	if (self.pageYOffset) {
		yScroll = self.pageYOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
		yScroll = document.documentElement.scrollTop;
	} else if (document.body) {// all other Explorers
		yScroll = document.body.scrollTop;
	}

	arrayPageScroll = new Array('',yScroll) 
	return arrayPageScroll;
}

// -----------------------------------------------------------------------------------

//
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.org
// Edit for Firefox by pHaez
//
function getPageSize(){
	
	var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}


	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
	return arrayPageSize;
}

// -----------------------------------------------------------------------------------

//
// getKey(key)
// Gets keycode. If 'x' is pressed then it hides the lightbox.
//
function getKey(e){
	if (e == null) { // ie
		keycode = event.keyCode;
	} else { // mozilla
		keycode = e.which;
	}
	key = String.fromCharCode(keycode).toLowerCase();
	
	if(key == 'x'){
	}
}

// -----------------------------------------------------------------------------------

//
// listenKey()
//
function listenKey () {	document.onkeypress = getKey; }
	
// ---------------------------------------------------

function showSelectBoxes(){
	selects = document.getElementsByTagName("select");
	for (i = 0; i != selects.length; i++) {
		selects[i].style.visibility = "visible";
	}
}

// ---------------------------------------------------

function hideSelectBoxes(){
	selects = document.getElementsByTagName("select");
	for (i = 0; i != selects.length; i++) {
		selects[i].style.visibility = "hidden";
	}
}

// ---------------------------------------------------

//
// pause(numberMillis)
// Pauses code execution for specified time. Uses busy code, not good.
// Code from http://www.faqts.com/knowledge_base/view.phtml/aid/1602
//
function pause(numberMillis) {
	var now = new Date();
	var exitTime = now.getTime() + numberMillis;
	while (true) {
		now = new Date();
		if (now.getTime() > exitTime)
			return;
	}
}

// ---------------------------------------------------

function setLightboxImages( lang )
{
  /*fileBottomNavCloseImage = "/images/closelabel_"+ lang +".gif";
  $('bottomNavCloseImg').src = fileBottomNavCloseImage;
  if( lang == "fr" )
  {
    $('lb_bottom_cancel').innerHTML = "annuler";
    ofLabel = "de";
  }*/
}

function closeLightbox() { myLightbox.end(); }
function initLightboxAnchors() { myLightbox.init_anchors(); }