/// <reference path="../jquery-1.3.2-vsdoc.js" />

/*
 * 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: '',
			closeImage: '',
			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;
		var 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).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);