/*
 * Facebox (for jQuery)
 * version: 1.2 (05/05/2008)
 * @requires jQuery v1.2 or later
 *
 * Examples at http://famspam.com/facebox/
 *
 * Licensed under the MIT:
 *   http://www.opensource.org/licenses/mit-license.php
 *
 * Copyright 2007, 2008 Chris Wanstrath [ chris@ozmm.org ]
 *
 * Usage:
 *  
 *  jQuery(document).ready(function() {
 *    jQuery('a[rel*=facebox]').facebox() 
 *  })
 *
 *  <a href="#terms" rel="facebox">Terms</a>
 *    Loads the #terms div in the box
 *
 *  <a href="terms.html" rel="facebox">Terms</a>
 *    Loads the terms.html page in the box
 *
 *  <a href="terms.png" rel="facebox">Terms</a>
 *    Loads the terms.png image in the box
 *
 *
 *  You can also use it programmatically:
 * 
 *    jQuery.facebox('some html')
 *
 *  The above will open a facebox with "some html" as the content.
 *    
 *    jQuery.facebox(function($) { 
 *      $.get('blah.html', function(data) { $.facebox(data) })
 *    })
 *
 *  The above will show a loading screen before the passed function is called,
 *  allowing for a better ajaxy experience.
 *
 *  The facebox function can also display an ajax page or image:
 *  
 *    jQuery.facebox({ ajax: 'remote.html' })
 *    jQuery.facebox({ image: 'dude.jpg' })
 *
 *  Want to close the facebox?  Trigger the 'close.facebox' document event:
 *
 *    jQuery(document).trigger('close.facebox')
 *
 *  Facebox also has a bunch of other hooks:
 *
 *    loading.facebox
 *    beforeReveal.facebox
 *    reveal.facebox (aliased as 'afterReveal.facebox')
 *    init.facebox
 *
 *  Simply bind a function to any of these hooks:
 *
 *   $(document).bind('reveal.facebox', function() { ...stuff to do after the facebox and contents are revealed... })
 *
 */
(function($) {
	$.facebox = function(data, klass) {
		$.facebox.loading()
		
		if (data.ajax) fillFaceboxFromAjax(data.ajax)
		else if (data.image) fillFaceboxFromImage(data.image)
		else if (data.div) fillFaceboxFromHref(data.div)
		else if ($.isFunction(data)) data.call($)
		else $.facebox.reveal(data, klass)
	}
	
	/*
	* Public, $.facebox methods
	*/
	$.extend($.facebox, {
		settings: {
			opacity      : 0,
			overlay      : true,
			loadingImage : '/js/facebox/loading.gif',
			closeImage   : '/js/facebox/closelabel.gif',
			imageTypes   : [ 'png', 'jpg', 'jpeg', 'gif' ],
			faceboxHtml  : '\
			<div id="facebox" style="display:none;"> \
				<div class="popup"> \
					<table> \
					<tbody> \
					<tr> \
						<td class="tl"/><td class="b"/><td class="tr"/> \
					</tr> \
					<tr> \
						<td class="b"/> \
							<td class="body"> \
								<div class="content"> \
								</div> \
								<div class="footer"> \
								</div> \
							</td> \
						<td class="b"/> \
					</tr> \
					<tr> \
						<td class="bl"/><td class="b"/><td class="br"/> \
					</tr> \
					</tbody> \
					</table> \
				</div> \
			</div>'
		},
		
		loading: function() {
			init()
			if ($('#facebox .loading').length == 1) return true
			showOverlay()
			
			$('#facebox .content').empty()
			$('#facebox .body').children().hide().end().
			append('<div class="loading"><img src="'+$.facebox.settings.loadingImage+'"/></div>')
			
			$('#facebox').css({
				top:	getPageScroll()[1] + (getPageHeight() / 10),
				left:	385.5
			}).show()
			
			$(document).bind('keydown.facebox', function(e) {
				if (e.keyCode == 27) $.facebox.close()
				return true
			})
			$(document).trigger('loading.facebox')
		},
		
		reveal: function(data, klass) {
			$(document).trigger('beforeReveal.facebox')
			if (klass) $('#facebox .content').addClass(klass)
			$('#facebox .content').append(data)
			$('#facebox .loading').remove()
			$('#facebox .body').children().fadeIn('normal')
			$('#facebox').css('left', $(window).width() / 2 - ($('#facebox table').width() / 2))
			$(document).trigger('reveal.facebox').trigger('afterReveal.facebox')
		},
		
		close: function() {
			$(document).trigger('close.facebox')
			return false
		}
	}
)

/*
* Public, $.fn methods
*/
$.fn.facebox = function(settings) {
	init(settings)
	
	function clickHandler() {
		$.facebox.loading(true)
		
		// support for rel="facebox.inline_popup" syntax, to add a class
		// also supports deprecated "facebox[.inline_popup]" syntax
		var klass = this.rel.match(/facebox\[?\.(\w+)\]?/)
		if (klass) klass = klass[1]
		
		fillFaceboxFromHref(this.href, klass)
		return false
	}
	
	return this.click(clickHandler)
}

/*
* Private methods
*/
// called one time to setup facebox on this page
function init(settings) {
	if ($.facebox.settings.inited) return true
	else $.facebox.settings.inited = true
	
	$(document).trigger('init.facebox')
	makeCompatible()
	
	var imageTypes = $.facebox.settings.imageTypes.join('|')
	$.facebox.settings.imageTypesRegexp = new RegExp('\.' + imageTypes + '$', 'i')
	
	if (settings) $.extend($.facebox.settings, settings)
	$('body').append($.facebox.settings.faceboxHtml)
	
	var preload = [ new Image(), new Image() ]
	preload[0].src = $.facebox.settings.closeImage
	preload[1].src = $.facebox.settings.loadingImage
	
	$('#facebox').find('.b:first, .bl, .br, .tl, .tr').each(function() {
		preload.push(new Image())
		preload.slice(-1).src = $(this).css('background-image').replace(/url\((.+)\)/, '$1')
	})
	
	$('#facebox .close').click($.facebox.close)
	$('#facebox .close_image').attr('src', $.facebox.settings.closeImage)
}

// getPageScroll() by 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;
	}
	return new Array(xScroll,yScroll)
}

// Adapted from getPageSize() by quirksmode.com
function getPageHeight() {
	var windowHeight
	if (self.innerHeight) {	// all except Explorer
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowHeight = document.body.clientHeight;
	}
	return windowHeight
}

// Backwards compatibility
function makeCompatible() {
	var $s = $.facebox.settings
	
	$s.loadingImage = $s.loading_image || $s.loadingImage
	$s.closeImage = $s.close_image || $s.closeImage
	$s.imageTypes = $s.image_types || $s.imageTypes
	$s.faceboxHtml = $s.facebox_html || $s.faceboxHtml
}

// Figures out what you want to display and displays it
// formats are:
//     div: #id
//   image: blah.extension
//    ajax: anything else
function fillFaceboxFromHref(href, klass) {
	// div
	if (href.match(/#/)) {
		var url    = window.location.href.split('#')[0]
		var target = href.replace(url,'')
		$.facebox.reveal($(target).clone().show(), klass)
		
	// image
	} else if (href.match($.facebox.settings.imageTypesRegexp)) {
		fillFaceboxFromImage(href, klass)
	// ajax
	} else {
		fillFaceboxFromAjax(href, klass)
	}
}

function fillFaceboxFromImage(href, klass) {
	var image = new Image()
	image.onload = function() {
		$.facebox.reveal('<div class="image"><img src="' + image.src + '" /></div>', klass)
	}
	image.src = href
}

function fillFaceboxFromAjax(href, klass) {
	$.get(href, function(data) { $.facebox.reveal(data, klass) })
}

function skipOverlay() {
	return $.facebox.settings.overlay == false || $.facebox.settings.opacity === null
}

function showOverlay() {
	if (skipOverlay()) return
	
	if ($('facebox_overlay').length == 0) $("body").append('<div id="facebox_overlay" class="facebox_hide"></div>')
	
	$('#facebox_overlay').hide().addClass("facebox_overlayBG").css('opacity', $.facebox.settings.opacity).click(function() { $(document).trigger('close.facebox') }).fadeIn(200)
	return false
}

function hideOverlay() {
	if (skipOverlay()) return
	
	$('#facebox_overlay').fadeOut(200, function() {
		$("#facebox_overlay").removeClass("facebox_overlayBG")
		$("#facebox_overlay").addClass("facebox_hide") 
		$("#facebox_overlay").remove()
	})
	
	return false
}

/*
* Bindings
*/
$(document).bind('close.facebox', function() {
	$(document).unbind('keydown.facebox')
	$('#facebox').fadeOut(function() {
		$('#facebox .content').removeClass().addClass('content')
		hideOverlay()
		$('#facebox .loading').remove()
	})
})

})(jQuery);