/*
 * 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,
		  imageTypes   : [ 'png', 'jpg', 'jpeg', 'gif' ],
		  faceboxHtml  : '\<div id="facebox" style="display:none;">\<div class="popup">\<div class="content"></div>\/div><a href="#" class="close"><img src="./js/jquery/facebox/closelabel.gif" title="Fechar" class="close_image" /></a>\</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="./templates/js/jquery/facebox/loading.gif"/></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 div').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);