/*
* Facebox (for jQuery)
* version: 1.0 (05/18/2009)
* @requires jQuery v1.2 or later
*
* Examples at http://famspam.com/facebox/
*
* 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(data.settings);

        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: {
            temphtml: "",
            target: "",
            opacity: 0.4,
            overlay: true,
            loadingImage: null,
            closeImage: '/Img/homepage/cityx.gif',
            imageTypes: ['png', 'jpg', 'jpeg', 'gif'],
            callBack: {
                LoadingBack: null,
                beforeRevealBack: null,
                RevealBack: null,
                afterRevealBack: null
            },
            faceboxHtml: '\
                <div id="facebox" style="display:none;"> \
                    <div class="popup"> \
                    <table> \
                      <tbody> \
                        <tr> \
                          <td class="body"> \
                            <div class="faceboxcontent"> \
                            </div> \
                          </td> \
                        </tr> \
                      </tbody> \
                    </table> \
                    </div> \
                </div>'
        },

        loading: function(settings) {
            init(settings);
            if ($('#facebox .loading').length == 1) {
                return true;
            }

            showOverlay();
            $('#facebox .faceboxcontent').empty();

            if ($.facebox.settings.loadingImage) {
                $('#facebox .body').children().hide().end().append('<div class="loading"><img src="' + $.facebox.settings.loadingImage + '"/></div>');
            }

            $('#facebox').css({
                top: getPageScroll()[1] + (getPageHeight() / 10) + 50,
                left: 247
            }).show();

            $(document).bind('keydown.facebox', function(e) {
                if (e.keyCode == 27) $.facebox.close();
                return true;
            });
            $(document).trigger('loading.facebox', [$.facebox.settings.callBack.LoadingBack]);
        },

        reveal: function(data, klass) {
            $(document).trigger('beforeReveal.facebox', [$.facebox.settings.callBack.beforeRevealBack])
            if (klass) $('#facebox .faceboxcontent').addClass(klass)
            $('#facebox .faceboxcontent').append(data)
            $('#facebox .loading').remove()
            $('#facebox .body').children().fadeIn('normal')
            $('#facebox .close').click($.facebox.close)
            $('#facebox .close_image').attr('src', $.facebox.settings.closeImage)
            $(document).trigger('reveal.facebox', [$.facebox.settings.callBack.RevealBack]).trigger('afterReveal.facebox', [$.facebox.settings.callBack.afterRevealBack])
        },

        close: function() {
            $(document).trigger('close.facebox');
            $(document).trigger('closed.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/);
            if (klass) klass = klass[0];

            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);
        }

        $(document).ready(function() {
            $('body').append($.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) {
        if (href.match(/#/)) {// div
            var url = window.location.href.split('#')[0]
            var target = href.replace(url, '')
            $.facebox.settings.temphtml = $(target).html()
            $.facebox.settings.target = target
            $.facebox.reveal($(target).show().clone(), klass)
            $(target).hide()
            $(target).empty()
        } else if (href.match($.facebox.settings.imageTypesRegexp)) {// image
            fillFaceboxFromImage(href, klass)
        } else {// ajax
            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') })//点击遮挡层，隐藏
        .fadeIn(200);
        return false;
    }

    function hideOverlay() {
        if (skipOverlay()) return

        $('#facebox_overlay').fadeOut(200, function() {
            $("#facebox_overlay").remove()
        })

        return false
    }

    /* Bindings*/
    $(document).bind('close.facebox', function() {
        $(document).unbind('keydown.facebox')
        $('#facebox').fadeOut(function() {
        $('#facebox .faceboxcontent').removeClass().addClass('faceboxcontent');
            $($.facebox.settings.target).append($.facebox.settings.temphtml);
            hideOverlay();
            $('#facebox .loading').remove();
        })
    })
})(jQuery);