// -----------------------------------------------------------------------------------
//
//  Formbox 1.0
//  by Will Scheidegger - http://www.fastforward.ch
//
//  inspired by
//	Lightbox v2.03.3
//	by Lokesh Dhakar - http://www.huddletogether.com
//
// -----------------------------------------------------------------------------------
/*

	Table of Contents
	-----------------
	Configuration
	Global Variables

	Extending Built-in Objects	
	- Object.extend(Element)
	- Array.prototype.removeDuplicates()
	- Array.prototype.empty()

	Lightbox Class Declaration
	- initialize()
	- updateImageList()
	- start()
	- changeImage()
	- resizeImageContainer()
	- showForm()
	- updateDetails()
	- updateNav()
	- enableKeyboardNav()
	- disableKeyboardNav()
	- keyboardAction()
	- preloadNeighborImages()
	- end()
	
	Miscellaneous Functions
	- getPageScroll()
	- getPageSize()
	- getKey()
	- listenKey()
	- showSelectBoxes()
	- hideSelectBoxes()
	- showFlash()
	- hideFlash()
	- pause()
	- initLightbox()
	
	Function Calls
	- addLoadEvent(initLightbox)
	
*/
// -----------------------------------------------------------------------------------

//
//	Configuration
//
// find out where we currently are:
var url = new String(window.location);
var segments = url.split("/", 4);
var rootContext = "";
if (segments[3]) {
	rootContext =  "/" + segments[3];
}
var pathToFormboxImageFolder = rootContext + "/docroot/chocosuisse.ch/images/formbox/";
var fbFileLoadingImage = pathToFormboxImageFolder + "loading.gif";		
var fbFileBottomNavCloseImage = pathToFormboxImageFolder + "closelabel.gif";

var fbOverlayOpacity = 0.8;	// controls transparency of shadow overlay

var fbAnimate = true;			// toggles resizing animations
var fbResizeSpeed = 7;		// controls the speed of the image resizing animations (1=slowest and 10=fastest)

var fbBorderSize = 0;		//if you adjust the padding in the CSS, you will need to update this variable

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

//
//	Global Variables
//
if(fbAnimate == true){
	overlayDuration = 0.2;	// shadow fade in/out duration
	if(fbResizeSpeed > 10){ fbResizeSpeed = 10;}
	if(fbResizeSpeed < 1){ fbResizeSpeed = 1;}
	resizeDuration = (11 - fbResizeSpeed) * 0.15;
} else { 
	overlayDuration = 0;
	resizeDuration = 0;
}

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

//
//	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";
	},
	setLeft: function(element,l) {
	   	element = $(element);
    	element.style.left = l +"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;
	}
});


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

//
//	Formbox Class Declaration
//	- initialize()
//	- start()
//	- enableKeyboardNav()
//	- disableKeyboardNav()
//	- keyboardNavAction()
//	- end()
//
//
var Formbox = Class.create();

Formbox.prototype = {
	
	// initialize()
	// Constructor runs on completion of the DOM loading. Calls updateImageList and then
	// the function inserts html at the bottom of the page which is used to display the shadow 
	// overlay and the image container.
	//
	initialize: function() {	
		

		// Code inserts html at the bottom of the page that looks similar to this:
		//
		//	<div id="overlayFormBox"></div>
		//	<div id="formbox">
		//		<div id="outerFormContainer">
		//			<div id="formContainer">
		//				<iframe id="formFrame">
		//				</iframe>
		//				<div id="loading">
		//					<a href="#" id="loadingLink">
		//						<img src="images/loading.gif">
		//					</a>
		//				</div>
		//			</div>
		//		</div>
		//		<div id="imageDataContainer">
		//			<div id="imageData">
		//				<div id="imageDetails">
		//					<span id="caption"></span>
		//					<span id="numberDisplay"></span>
		//				</div>
		//				<div id="bottomNav">
		//					<a href="#" id="bottomNavClose">
		//						<img src="images/close.gif">
		//					</a>
		//				</div>
		//			</div>
		//		</div>
		//	</div>


		var objBody = document.getElementsByTagName("body").item(0);
		
		var objOverlay = document.createElement("div");
		objOverlay.setAttribute('id','overlayFormBox');
		objOverlay.style.display = 'none';
		objOverlay.onclick = function() { myFormbox.end(); }
		objBody.appendChild(objOverlay);
		
		var objFormbox = document.createElement("div");
		objFormbox.setAttribute('id','formbox');
		objFormbox.style.display = 'none';
		objFormbox.onclick = function(e) {	// close Lightbox is user clicks shadow overlay
			if (!e) var e = window.event;
			var clickObj = Event.element(e).id;
			if ( clickObj == 'formbox') {
				myFormbox.end();
			}
		};
		objBody.appendChild(objFormbox);
			
		var objOuterFormContainer = document.createElement("div");
		objOuterFormContainer.setAttribute('id','outerFormContainer');
		objFormbox.appendChild(objOuterFormContainer);

		// When Formbox starts it will resize itself from 250 by 250 to the desired form dimension.
		// If animations are turned off, it will be hidden as to prevent a flicker of a
		// white 250 by 250 box.
		if(fbAnimate){
			Element.setWidth('outerFormContainer', 250);
			Element.setHeight('outerFormContainer', 250);			
		} else {
			Element.setWidth('outerFormContainer', 1);
			Element.setHeight('outerFormContainer', 1);			
		}

		var objFormContainer = document.createElement("div");
		objFormContainer.setAttribute('id','formContainer');
		objOuterFormContainer.appendChild(objFormContainer);
	
		var objFormboxIframe = document.createElement("iframe");
		objFormboxIframe.setAttribute('id','formFrame');
		objFormboxIframe.setAttribute('name','formFrame');
		objFormContainer.appendChild(objFormboxIframe);
	
/*		var objHoverNav = document.createElement("div");
		objHoverNav.setAttribute('id','hoverNav');
		objFormContainer.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');
		objFormContainer.appendChild(objLoading);
	
		var objLoadingLink = document.createElement("a");
		objLoadingLink.setAttribute('id','loadingLink');
		objLoadingLink.setAttribute('href','#');
		objLoadingLink.onclick = function() { myFormbox.end(); return false; }
		objLoading.appendChild(objLoadingLink);
	
		var objLoadingImage = document.createElement("img");
		objLoadingImage.setAttribute('src', fbFileLoadingImage);
		objLoadingLink.appendChild(objLoadingImage);*/

/*		var objImageDataContainer = document.createElement("div");
		objImageDataContainer.setAttribute('id','imageDataContainer');
		objFormbox.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','bottomNav');
//		objImageData.appendChild(objBottomNav);
		objOuterFormContainer.appendChild(objBottomNav);
	
/*		var objBottomNavCloseLink = document.createElement("a");
		objBottomNavCloseLink.setAttribute('id','bottomNavClose');
		objBottomNavCloseLink.setAttribute('href','#');
		objBottomNavCloseLink.onclick = function() { myFormbox.end(); return false; }
		objBottomNav.appendChild(objBottomNavCloseLink);
	
		var objBottomNavCloseImage = document.createElement("img");
		objBottomNavCloseImage.setAttribute('src', fbFileBottomNavCloseImage);
		objBottomNavCloseLink.appendChild(objBottomNavCloseImage);*/
	},

	
	
	//
	//	start()
	//	Display overlay and lightbox. If image is part of a set, add siblings to imageArray.
	//
	start: function(formLink, width, height) {	

		Element.setSrc('formFrame', formLink);
		if (height) {
			Element.setHeight('formFrame', height);
		}

		hideSelectBoxes();
		hideFlash();

		// stretch overlay to fill page and fade in
		var arrayPageSize = getPageSize();
		Element.setWidth('overlayFormBox', arrayPageSize[0]);
		Element.setHeight('overlayFormBox', arrayPageSize[1]);

		new Effect.Appear('overlayFormBox', { duration: overlayDuration, from: 0.0, to: fbOverlayOpacity });

		// calculate top and left offset for the lightbox 
		var arrayPageScroll = getPageScroll();
		var formboxTop = arrayPageScroll[1] + (arrayPageSize[3] / 10);
		var formboxLeft = arrayPageScroll[0];
		Element.setTop('formbox', formboxTop);
		Element.setLeft('formbox', formboxLeft);
		
		Element.show('formbox');
		if (width || height) {
			this.resizeFormContainer(width, height);
		}
	},


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

		// get curren width and height
		this.widthCurrent = Element.getWidth('outerFormContainer');
		this.heightCurrent = Element.getHeight('outerFormContainer');

		// get new width and height
		var widthNew = (imgWidth  + (fbBorderSize * 2));
		var heightNew = (imgHeight  + (fbBorderSize * 2));

		// scalars based on change from old to new
		this.xScale = ( widthNew / this.widthCurrent) * 100;
		this.yScale = ( heightNew / this.heightCurrent) * 100;

		// calculate size difference between new and old image, and resize if necessary
		wDiff = this.widthCurrent - widthNew;
		hDiff = this.heightCurrent - heightNew;

		if(!( hDiff == 0)){ new Effect.Scale('outerFormContainer', this.yScale, {scaleX: false, duration: resizeDuration, queue: 'front'}); }
		if(!( wDiff == 0)){ new Effect.Scale('outerFormContainer', this.xScale, {scaleY: false, delay: 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', widthNew);

//		this.showForm();
	},
	
	//
	//	showForm()
	//	Display image and begin preloading neighbors.
	//
	showForm: function(){
		Element.hide('loading');
//		new Effect.Appear('lightboxImage', { duration: resizeDuration, queue: 'end', afterFinish: function(){	myFormbox.updateDetails(); } });
//		this.preloadNeighborImages();
	},

	//
	//	updateNav()
	//	Display appropriate previous and next hover navigation.
	//
	updateNav: function() {		
		this.enableKeyboardNav();
	},

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

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

	//
	//	keyboardAction()
	//
	keyboardAction: function(e) {
		if (e == null) { // ie
			keycode = event.keyCode;
			escapeKey = 27;
		} else { // mozilla
			keycode = e.keyCode;
			escapeKey = e.DOM_VK_ESCAPE;
		}

		key = String.fromCharCode(keycode).toLowerCase();
		
		if((key == 'x') || (key == 'o') || (key == 'c') || (keycode == escapeKey)){	// close lightbox
			myFormbox.end();
		}
	},

	//
	//	end()
	//
	end: function() {
		this.disableKeyboardNav();
		Element.hide('formbox');
		Element.setSrc('formFrame', "");
		new Effect.Fade('overlayFormBox', { duration: overlayDuration});
		showSelectBoxes();
		showFlash();
	}
}

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

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

	var xScroll, yScroll;

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

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

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

//
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.com
// Edit for Firefox by pHaez
//
function getPageSize(){
	
	var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = window.innerWidth + window.scrollMaxX;
		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;
	
//	console.log(self.innerWidth);
//	console.log(document.documentElement.clientWidth);

	if (self.innerHeight) {	// all except Explorer
		if(document.documentElement.clientWidth){
			windowWidth = document.documentElement.clientWidth; 
		} else {
			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;
	}

//	console.log("xScroll " + xScroll)
//	console.log("windowWidth " + windowWidth)

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

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

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

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

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

function showFlash(){
	var flashObjects = document.getElementsByTagName("object");
	for (i = 0; i < flashObjects.length; i++) {
		flashObjects[i].style.visibility = "visible";
	}

	var flashEmbeds = document.getElementsByTagName("embed");
	for (i = 0; i < flashEmbeds.length; i++) {
		flashEmbeds[i].style.visibility = "visible";
	}
}

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

function hideFlash(){
	var flashObjects = document.getElementsByTagName("object");
	for (i = 0; i < flashObjects.length; i++) {
		flashObjects[i].style.visibility = "hidden";
	}

	var flashEmbeds = document.getElementsByTagName("embed");
	for (i = 0; i < flashEmbeds.length; i++) {
		flashEmbeds[i].style.visibility = "hidden";
	}

}


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

//
// pause(numberMillis)
// Pauses code execution for specified time. Uses busy code, not good.
// Help from Ran Bar-On [ran2103@gmail.com]
//

function pause(ms){
	var date = new Date();
	curDate = null;
	do{var curDate = new Date();}
	while( curDate - date < ms);
}
/*
function pause(numberMillis) {
	var curently = new Date().getTime() + sender;
	while (new Date().getTime();	
}
*/
// ---------------------------------------------------



function initFormbox() { myFormbox = new Formbox(); }
Event.observe(window, 'load', initFormbox, false);