/*
 * 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
            fillFaceboxFromHtml(data, klass);
            //$.facebox.reveal(data, klass);
            
    }


    // Public, $.facebox methods


    $.extend($.facebox, {
        settings: {
            opacity: 0,
            overlay: true,
            loadingImage: '/default/images/facebox/loading.gif',
            closeImage: '/default/images/frame/closebox.png',
            imageTypes: ['png', 'jpg', 'jpeg', 'gif']
        },
        
        loading: function() {            
            init();
            if ($('#facebox .loading').length == 1) {                
                return true;
            }
            
            $('#facebox .content').empty();
            $('#facebox .body')
                .children()
                .hide()
                .end()
                .append('<div class="loading"><img src="'+$.facebox.settings.loadingImage+'"/></div>');
            
            l = ($(window).width() / 2) - ($('#facebox').width()/2);
            t = getPageScroll()[1] + (getPageHeight()/2) - ($('#facebox').height()/2);
                        
            $('#facebox').css({
                top: t,
                left: l
            }).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 .image').click($.facebox.close);
            
            l = ($(window).width() / 2) - ($('#facebox table').width()/2);
            t = getPageScroll()[1] + (getPageHeight()/2) - ($('#facebox table').height()/2);
                        
            $('#facebox').css({
                'left': l,
                'top': t
            });
            
            image = $('#facebox .image img');
            if (image.length) {
                image = image[0];                
                w = $(image).width()/2;
                h = $(image).height();
                $('#facebox .image a').css('width', w+'px').css('height', h+'px');
                $('#facebox .image .icon').css('width', w+'px').css('height', h+'px');                
            }
            
            
            $(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');
                
        ext = $.browser.msie ? 'gif' : 'png';
        closeimage = $.facebox.settings.closeImage.replace('.png', '.'+ext);
                
        $.facebox.settings.faceboxHtml = '' +
            '<div id="facebox" style="display:none;">' +
              '<div class="popup">' +
                '<table>' +
                  '<tbody>' +
                    '<tr>' +
                      '<td class="tl"/><td class="tm"/><td class="tr"/>' +
                    '</tr>' +
                    '<tr>' +
                      '<td class="ml"/>' +
                      '<td class="body">' +
                        '<div class="content">' +
                        '</div>' +
                      '</td>' +
                      '<td class="mr"/>' +
                    '</tr>' +
                    '<tr>' +
                      '<td class="bl"/><td class="bm"/><td class="br"/>' +
                    '</tr>' +
                  '</tbody>' +
                '</table>' +
                '<a href="#" class="close">' +
                    '<img src="'+closeimage+'" title="close" class="close_image" />' +
                '</a>' +
              '</div>' +
            '</div>';
        
        if (settings)
            $.extend($.facebox.settings, settings);
        $('body').append($.facebox.settings.faceboxHtml);
        
        var preload = [document.createElement('img'), document.createElement('img')];
        preload[0].src = closeimage;
        preload[1].src = $.facebox.settings.loadingImage;
        
        $('#facebox').find('.bl, .bm, .br, .tl, .tm, .tr, .ml, .mr').each(function() {
            preload.push(document.createElement('img'));
            $(this).css('background-image', $(this).css('background-image').replace('.png', '.'+ext));                       
            preload.slice(-1).src = $(this).css('background-image').replace(/url\((.+)\)/, '$1');
        });
                
        $('#facebox .close').click($.facebox.close);
        $('#facebox .close_image').attr('src', closeimage);
    }
  
    // getPageScroll() by quirksmode.com
    function getPageScroll() {
        var xScroll, yScroll;
        if (self.pageYOffset) {
            yScroll = self.pageYOffset;
            xScroll = self.pageXOffset;
        }
        // Explorer 6 Strict
        else if (document.documentElement && document.documentElement.scrollTop) {
            yScroll = document.documentElement.scrollTop;
            xScroll = document.documentElement.scrollLeft;
        }
        // all other Explorers
        else if (document.body) {
            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;
        }
        // Explorer 6 Strict Mode
        else if (document.documentElement && document.documentElement.clientHeight) {
            windowHeight = document.documentElement.clientHeight;
        // other Explorers
        } else if (document.body) {
            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 = document.createElement('img');
        image.onload = function() {
            $.facebox.reveal('<div class="image"><img src="' + image.src + '" /></div>', klass);
        }
        image.src = href;
    }

    function fillFaceboxFromHtml(html, klass) {
        reg = /src="([^"]+)"/;
        a = reg.exec(html);
        if (a) {
            src = a[1];
            var img = document.createElement('img');
            img.onload = function() {                
                $.facebox.reveal(html, klass);
            }
            img.src = src;
        } else {
            $.facebox.reveal(html, klass);
        }
    }
    
    function fillFaceboxFromAjax(href, klass) {
        $.get(href, function(data) { 
            $.facebox.reveal(data, klass);
        });
    }



    // Bindings
    
    //$('#body').click($.facebox.close);
    //$('#body').click(function() {$(document).trigger('close.facebox');});
    $(document).bind('click', function(e) {
        if ($('#facebox .loading').length == 1)
            return true;
        $.facebox.close();
    });
    
    $(document).bind('close.facebox', function() {
        $(document).unbind('keydown.facebox');        
        $('#facebox').fadeOut(function() {
            $('#facebox .content').removeClass().addClass('content');            
            $('#facebox .loading').remove();
        });
    });

})(jQuery);