/*
 * Smoothbox v20080623 by Boris Popoff (http://gueschla.com)
 * To be used with mootools 1.2
 *
 * Based on Cody Lindley's Thickbox, MIT License
 *
 * Licensed under the MIT License:
 *   http://www.opensource.org/licenses/mit-license.php
 */

// on page load call TB_init
window.addEvent('domready', TB_init);

// prevent javascript error before the content has loaded
TB_WIDTH = 0;
TB_HEIGHT = 0;
var TB_doneOnce = 0;

// add smoothbox to href elements that have a class of .smoothbox
function TB_init(){
	$$("a.smoothbox").each(function(el){
		el.onclick = TB_bind;
	});
}

function TB_bind(event){
	var event = new Event(event);
	// stop default behaviour
	event.preventDefault();
	// remove click border
	this.blur();
	// get caption: either title or name attribute
	var caption = this.title || this.name || "";
	// get rel attribute for image groups
	var group = this.rel || false;
	// display the box for the elements href
	TB_show(caption, this.href, group);
	this.onclick = TB_bind;
	return false;
}

// called when the user clicks on a smoothbox link
function TB_show(caption, url, rel){
	// create iframe, overlay and box if non-existent
	if (!$("TB_overlay")) {
		new Element('iframe').setProperty('id', 'TB_HideSelect').injectInside(document.body);
		$('TB_HideSelect').setOpacity(0);
		new Element('div').setProperty('id', 'TB_overlay').injectInside(document.body);
		$('TB_overlay').setOpacity(0);
		TB_overlaySize();
		new Element('div').setProperty('id', 'TB_load').injectInside(document.body);
		$('TB_load').innerHTML = "<img src='images/loading-cycle.gif' />";
		TB_load_position();
		$('TB_overlay').set('tween', {
			duration: 400
		});
		$('TB_overlay').tween('opacity', 0, 0.6);   
	}
	if (!$("TB_load")) {
		new Element('div').setProperty('id', 'TB_load').injectInside(document.body);
		$('TB_load').innerHTML = "<img src='images/loading-cycle.gif' />";
		TB_load_position();
	}
	if (!$("TB_window")) {
		new Element('div').setProperty('id', 'TB_window').injectInside(document.body);
		$('TB_window').setOpacity(0);
	}
	$("TB_overlay").onclick = TB_remove;
	window.onscroll = TB_position;

	// check if a query string is involved
	var baseURL = url.match(/(.+)?/)[1] || url;

	// regex to check if a href refers to an image
	var imageURL = /\.(jpe?g|png|gif|bmp)/gi;

	// check for images
	if (baseURL.match(imageURL)) {
		var dummy = {
			caption: "",
			url: "",
			html: ""
		};
		var prev = dummy, next = dummy, imageCount = "";

		// if an image group is given
		if (rel) {
			function getInfo(image, id, label){
				return {
					caption: image.title,
					url: image.href,
					html: "<span id='TB_" + id + "'>&nbsp;&nbsp;<a href='#'>" + label + "</a></span>"
				}
			}

			// find the anchors that point to the group
			var imageGroup = [];
			$$("a.smoothbox").each(function(el){
				if (el.rel == rel) {
					imageGroup[imageGroup.length] = el;
				}
			})
			var foundSelf = false;

			// loop through the anchors, looking for ourself, saving information about previous and next image
			for (var i = 0; i < imageGroup.length; i++) {
				var image = imageGroup[i];
				var urlTypeTemp = image.href.match(imageURL);

				// look for ourself
				if (image.href == url) {
					foundSelf = true;
					imageCount = "Image " + (i + 1) + " of " + (imageGroup.length);
				} else {
					// when we found ourself, the current is the next image
					if (foundSelf) {
						next = getInfo(image, "next", "Next &gt;");
						// stop searching
						break;
					} else {
						// didn't find ourself yet, so this may be the one before ourself
						prev = getInfo(image, "prev", "&lt; Prev");
					}
				}
			}
		}

		imgPreloader = new Image();
		imgPreloader.onload = function(){
			imgPreloader.onload = null;

			// Resizing large images
			//var x = window.getWidth() - 150;
			//var y = window.getHeight() - 150;
			var x = window.getWidth() - 100;
			var y = window.getHeight() - 100;
			var imageWidth = imgPreloader.width;
			var imageHeight = imgPreloader.height;
			if (imageWidth > x) {
				imageHeight = imageHeight * (x / imageWidth);
				imageWidth = x;
				if (imageHeight > y) {
					imageWidth = imageWidth * (y / imageHeight);
					imageHeight = y;
				}
			} else if (imageHeight > y) {
				imageWidth = imageWidth * (y / imageHeight);
				imageHeight = y;
				if (imageWidth > x) {
					imageHeight = imageHeight * (x / imageWidth);
					imageWidth = x;
				}
			}
			// End Resizing

			// TODO don't use globals
			//TB_WIDTH = imageWidth + 30;
			TB_WIDTH = imageWidth;
			TB_HEIGHT = imageHeight + 60;

			// TODO empty window content instead
			$("TB_window").innerHTML += "<a href='' id='TB_ImageOff' title='Close'><img id='TB_Image' src='" + url + "' width='" + imageWidth + "' height='" + imageHeight + "' alt='" + caption + "'/></a>" + "<div id='TB_caption'>" + caption + "<div id='TB_secondLine'>" + imageCount + prev.html + next.html + "</div></div><div id='TB_closeWindow'><a href='#' id='TB_closeWindowButton' title='Close'>close</a></div>";

			$("TB_closeWindowButton").onclick = TB_remove;
			function buildClickHandler(image) {
				return function() {
					$("TB_window").dispose();
					new Element('div').setProperty('id', 'TB_window').injectInside(document.body);
					TB_show(image.caption, image.url, rel);
					return false;
				};
			}

			var goPrev = buildClickHandler(prev);
			var goNext = buildClickHandler(next);
			if ($('TB_prev')) {
				$("TB_prev").onclick = goPrev;
			}
			if ($('TB_next')) {
				$("TB_next").onclick = goNext;
			}

			document.onkeydown = function(event){
				var event = new Event(event);
				switch (event.code) {
					case 27:
						TB_remove();
						break;
					case 190:
						if ($('TB_next')) {
							document.onkeydown = null;
							goNext();
						}
						break;
					case 188:
						if ($('TB_prev')) {
							document.onkeydown = null;
							goPrev();
						}
						break;
				}
			}
            
			// TODO don't remove loader etc., just hide and show later
			$("TB_ImageOff").onclick = TB_remove;
			TB_position();
			TB_showWindow();
		}
		imgPreloader.src = url;
	} else { 
		//code to show html pages
		var queryString = url.match(/\?(.+)/)[1];
		var params = TB_parseQuery(queryString);
		//TB_WIDTH = (params['width'] * 1) + 30;
		TB_WIDTH = (params['width'] * 1);
		TB_HEIGHT = (params['height'] * 1) + 40;

		//var ajaxContentW = TB_WIDTH - 30, ajaxContentH = TB_HEIGHT - 45;
		var ajaxContentW = TB_WIDTH, ajaxContentH = TB_HEIGHT - 45;

		if (url.indexOf('TB_iframe') != -1) {
			urlNoQuery = url.split('TB_');
			// original was (ajaxContentW + 29)
			$("TB_window").innerHTML += "<div id='TB_title'><div id='TB_ajaxWindowTitle'>" + caption + "</div><div id='TB_closeAjaxWindow'><a href='#' id='TB_closeWindowButton' title='Close'>close</a></div></div><iframe frameborder='0' hspace='0' src='" + urlNoQuery[0] + "' id='TB_iframeContent' name='TB_iframeContent' style='width:" + (ajaxContentW + 0) + "px;height:" + (ajaxContentH + 17) + "px;' onload='TB_showWindow()'> </iframe>";
		} else {
			$("TB_window").innerHTML += "<div id='TB_title'><div id='TB_ajaxWindowTitle'>" + caption + "</div><div id='TB_closeAjaxWindow'><a href='#' id='TB_closeWindowButton'>close</a></div></div><div id='TB_ajaxContent' style='width:" + ajaxContentW + "px;height:" + ajaxContentH + "px;'></div>";
		}

		$("TB_closeWindowButton").onclick = TB_remove;

		if (url.indexOf('TB_inline') != -1) {
			$("TB_ajaxContent").innerHTML = ($(params['inlineId']).innerHTML);
			TB_position();
			TB_showWindow();
		} else if (url.indexOf('TB_iframe') != -1) {
			TB_position();
			if (frames['TB_iframeContent'] == undefined) {
				//be nice to safari
				$(document).keyup(function(e){
					var key = e.keyCode;
					if (key == 27) {
						TB_remove()
					}
				});
				TB_showWindow();
			}
		} else {
			var handlerFunc = function(){
				TB_position();
				TB_showWindow();
			};

			new Request.HTML({
				method: 'get',
				update: $("TB_ajaxContent"),
				onComplete: handlerFunc
			}).get(url);
		}
	}

	window.onresize = function(){
		TB_position();
		TB_load_position();
		TB_overlaySize();
	}

	document.onkeyup = function(event){
		var event = new Event(event);
		if (event.code == 27) {
			// close
			TB_remove();
		}
	}
}

//helper functions below
function TB_showWindow(){
	//$("TB_load").dispose();
	//$("TB_window").setStyles({display:"block",opacity:'0'});
	if (TB_doneOnce === 0) {
		TB_doneOnce = 1;
		$('TB_window').set('tween', {
			duration: 250,
			onComplete: function(){
				if ($('TB_load')) {
					$('TB_load').dispose();
				}
			}
		});
		$('TB_window').tween('opacity', 0, 1);
	} else {
		$('TB_window').setStyle('opacity', 1);
		if ($('TB_load')) {
			$('TB_load').dispose();
		}
	}
}

function TB_remove(){
	$("TB_overlay").onclick = null;
	document.onkeyup = null;
	document.onkeydown = null;
	if ($('TB_imageOff')) 
		$("TB_imageOff").onclick = null;
	if ($('TB_closeWindowButton')) 
		$("TB_closeWindowButton").onclick = null;
	if ($('TB_prev')) {
		$("TB_prev").onclick = null;
	}
	if ($('TB_next')) {
		$("TB_next").onclick = null;
	}
	$('TB_window').set('tween', {
		duration: 250,
		onComplete: function(){
			$('TB_window').dispose();
		}
	});
	$('TB_window').tween('opacity', 1, 0);
	$('TB_overlay').set('tween', {
		duration: 400,
		onComplete: function(){
			$('TB_overlay').dispose();
		}
	});
	$('TB_overlay').tween('opacity', 0.6, 0);
	window.onscroll = null;
	window.onresize = null;
	$('TB_HideSelect').dispose();
	TB_init();
	TB_doneOnce = 0;
	return false;
}

function TB_position(){
	$('TB_window').set('morph', {
		duration: 75
	});
	$('TB_window').morph({
		width: TB_WIDTH + 'px',
		left: (window.getScrollLeft() + (window.getWidth() - TB_WIDTH) / 2) + 'px',
		top: (window.getScrollTop() + (window.getHeight() - TB_HEIGHT) / 2) + 'px'
	});	
}

function TB_overlaySize(){
	// we have to set this to 0px before so we can reduce the size / width of the overflow onresize 
	$("TB_overlay").setStyles({
		"height": '0px',
		"width": '0px'
	});
	$("TB_HideSelect").setStyles({
		"height": '0px',
		"width": '0px'
	});
	$("TB_overlay").setStyles({
		"height": window.getScrollHeight() + 'px',
		"width": window.getScrollWidth() + 'px'
	});
	$("TB_HideSelect").setStyles({
		"height": window.getScrollHeight() + 'px',
		"width": window.getScrollWidth() + 'px'
	});
}

function TB_load_position(){
	if ($("TB_load")) {
		$("TB_load").setStyles({
			left: (window.getScrollLeft() + (window.getWidth() - 56) / 2) + 'px',
			top: (window.getScrollTop() + ((window.getHeight() - 20) / 2)) + 'px',
			display: "block"
		});
	}
}

function TB_parseQuery(query){
	// return empty object
	if (!query) 
		return {};
	var params = {};

	// parse query
	//var pairs = query.split(/[;&]/);
	var pairs = query.split(/[;&(&\amp;)]/);
	for (var i = 0; i < pairs.length; i++) {
		var pair = pairs[i].split('=');
		if (!pair || pair.length != 2) 
		continue;
		// unescape both key and value, replace "+" with spaces in value
		params[unescape(pair[0])] = unescape(pair[1]).replace(/\+/g, ' ');
	}
	return params;
}