/*
 * Thickbox 2.1 - jQuery plugin for displaying content in a box above the page
 * 
 * Copyright (c) 2006, 2007 Cody Lindley (http://www.codylindley.com)
 *
 * Licensed under the MIT License:
 *   http://www.opensource.org/licenses/mit-license.php
 */

// on page load call TB_init
$(document).ready(TB_init);

// add thickbox to href elements that have a class of .thickbox
function TB_init(){
	$("a.thickbox").click(function(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 = false;
		
		// display the box for the elements href
		TB_show(caption, this.href, group);
	});
}

// called when the user clicks on a thickbox link
function TB_show(caption, url, rel) {

	// create iframe, overlay and box if non-existent
	if ( !$("#TB_HideSelect").length ) {
		$("body").append("<iframe id='TB_HideSelect'></iframe><div id='TB_overlay'></div><div id='TB_window'></div>");
		$("#TB_overlay").click(TB_remove);
	}
	// TODO replace or check if event is already assigned
	$(window).scroll(TB_position);
	
	// TODO replace
	TB_overlaySize();
	
	// TODO create loader only once, hide and show on demand
	$("body").append("<div id='TB_load'><img src='"+loadingAnim+"/ndxz-studio/site/img/loadingAnimation-whbg.gif' /></div>");
	TB_load_position();
	
	// check if a query string is involved
	// var baseURL = url.match(/(.+)?/)[1] || url;
	var baseURL = url;

	// regex to check if a href refers to an image
	var imageURL = /\.(jpe?g|png|gif|bmp)/gi;
	// check for images
	if ( baseURL ) {
		var dummy = { caption: "", url: "", html: "" };
		
		var prev = dummy,
			next = dummy,
			imageCount = "";
		
		var pagesize = TB_getPageSize();
		var x = pagesize[0] - 150;
		var y = pagesize[1] - 150;
		
		var imageWidth = 640;
		var imageHeight = 480;
		
		// TODO don't use globals
		TB_WIDTH = imageWidth + 30;
		TB_HEIGHT = imageHeight + 60;
		
		// Vaska addition
		// need to add span to caption
		img_caption = (caption == '') ? '&nbsp;' : "<span class='TB_bg'>"+caption+"</span>";
		
		// TODO empty window content instead
		//$("#TB_window").append("<img id='TB_Image' src='"+url+"' width='"+imageWidth+"' height='"+imageHeight+"' alt='"+caption+"'/>" + "<div id='TB_caption'>"+img_caption+"</div><div id='TB_secondLine'>" + prev.html + "<span class='TB_bg'> | " + imageCount + "<span><span class='TB_bg'> | <a href='#' id='TB_closeWindowButton' title='return'>Return</a> | <span>" + next.html + "</div>");
		$("#TB_window").append('<div id="vidContainer"><video id="vidBox" controls><source src="'+url+'.mp4" type="video/mp4" /><source src="'+url+'.ogg" type="video/ogg" />This browser is not compatible with HTML 5</video>' + "<div id='TB_caption'>"+img_caption+"</div><div id='TB_secondLine'><span id='lightbox-close'><a href='#' id='TB_closeWindowButton' title='close video'>Close X</a></span></div></div>");
		
		$("#TB_closeWindowButton").click(TB_remove);
		
		function buildClickHandler(image) {
			return function() {
				$("#TB_window").remove();
				$("body").append("<div id='TB_window'></div>");
				TB_show(image.caption, image.url, rel);
				return false;
			};
		}
		var goPrev = buildClickHandler(prev);
		var goNext = buildClickHandler(next);
		if ( prev.html ) {
			$("#TB_prev").click(goPrev);
		}
		
		if ( next.html ) {		
			$("#TB_next").click(goNext);
		}
		
		// TODO use jQuery, maybe with event fix plugin, or just get the necessary parts of it
		document.onkeydown = function(e) {
			if (e == null) { // ie
				keycode = event.keyCode;
			} else { // mozilla
				keycode = e.which;
			}
			switch(keycode) {
			case 27:
				TB_remove();
				break;
			case 190:
				if( next.html ) {
					document.onkeydown = null;
					goNext();
				}
				break;
			case 188:
				if( prev.html ) {
					document.onkeydown = null;
					goPrev();
				}
				break;
			}
		}

		
		$('#vidBox').bind('loadedmetadata', function() {
  			imageWidth = $('#vidBox').width();
			imageHeight = $('#vidBox').height();
			TB_WIDTH = imageWidth;
			TB_HEIGHT = imageHeight;
  			TB_position();
		});
		
		// TODO don't remove loader etc., just hide and show later
		$("#TB_load").remove();
		$("#TB_ImageOff").click(TB_remove);
		
		// for safari using css instead of show
		// TODO is that necessary? can't test safari
		$("#TB_window").css({display:"block"});
		
	}
	
	$(window).resize(TB_position);
	
	document.onkeyup = function(e){ 	
		if (e == null) { // ie
			keycode = event.keyCode;
		} else { // mozilla
			keycode = e.which;
		}
		if(keycode == 27){ // close
			TB_remove();
		}	
	}
		
}

//helper functions below

function TB_showIframe(){
	$("#TB_load").remove();
	$("#TB_window").css({display:"block"});
}

function TB_remove() {
	$('#vidBox').unbind('loadedmetadata');
 	$("#TB_imageOff").unbind("click");
	$("#TB_overlay").unbind("click");
	$("#TB_closeWindowButton").unbind("click");
	$("#TB_window").fadeOut("fast",function(){$('#TB_window,#TB_overlay,#TB_HideSelect').remove();});
	$("#TB_load").remove();
	return false;
}

function TB_position() {
	var pagesize = TB_getPageSize();	
	var arrayPageScroll = TB_getPageScrollTop();
	var style = {width: TB_WIDTH, left: (arrayPageScroll[0] + (pagesize[0] - TB_WIDTH)/2), top: (arrayPageScroll[1] + (pagesize[1]-TB_HEIGHT)/2)};
	$("#TB_window").css(style);
}

function TB_overlaySize(){
	if (window.innerHeight && window.scrollMaxY || window.innerWidth && window.scrollMaxX) {	
		yScroll = window.innerHeight + window.scrollMaxY;
		xScroll = window.innerWidth + window.scrollMaxX;
		var deff = document.documentElement;
		var wff = (deff&&deff.clientWidth) || document.body.clientWidth || window.innerWidth || self.innerWidth;
		var hff = (deff&&deff.clientHeight) || document.body.clientHeight || window.innerHeight || self.innerHeight;
		xScroll -= (window.innerWidth - wff);
		yScroll -= (window.innerHeight - hff);
	} else if (document.body.scrollHeight > document.body.offsetHeight || document.body.scrollWidth > document.body.offsetWidth){ // all but Explorer Mac
		yScroll = document.body.scrollHeight;
		xScroll = document.body.scrollWidth;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		yScroll = document.body.offsetHeight;
		xScroll = document.body.offsetWidth;
  	}
	$("#TB_overlay").css({"height": yScroll, "width": xScroll});
	$("#TB_HideSelect").css({"height": yScroll,"width": xScroll});
}

function TB_load_position() {
	var pagesize = TB_getPageSize();
	var arrayPageScroll = TB_getPageScrollTop();
	$("#TB_load")
		.css({left: (arrayPageScroll[0] + (pagesize[0] - 100)/2), top: (arrayPageScroll[1] + ((pagesize[1]-100)/2)) })
		.css({display:"block"});
}

function TB_parseQuery ( query ) {
	// return empty object
	if( !query )
		return {};
	var params = {};
	
	// parse query
	var pairs = query.split(/[;&]/);
	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;
}

function TB_getPageScrollTop(){
	var yScrolltop;
	var xScrollleft;
	if (self.pageYOffset || self.pageXOffset) {
		yScrolltop = self.pageYOffset;
		xScrollleft = self.pageXOffset;
	} else if (document.documentElement && document.documentElement.scrollTop || document.documentElement.scrollLeft ){	 // Explorer 6 Strict
		yScrolltop = document.documentElement.scrollTop;
		xScrollleft = document.documentElement.scrollLeft;
	} else if (document.body) {// all other Explorers
		yScrolltop = document.body.scrollTop;
		xScrollleft = document.body.scrollLeft;
	}
	arrayPageScroll = new Array(xScrollleft,yScrolltop) 
	return arrayPageScroll;
}

function TB_getPageSize(){
	var de = document.documentElement;
	var w = window.innerWidth || self.innerWidth || (de&&de.clientWidth) || document.body.clientWidth;
	var h = window.innerHeight || self.innerHeight || (de&&de.clientHeight) || document.body.clientHeight
	arrayPageSize = new Array(w,h) 
	return arrayPageSize;
}