/*  Facebox for Prototype, version 2.0
 *  By Robert Gaal - http://wakoopa.com 
 *
 *  Heavily based on Facebox by Chris Wanstrath - http://famspam.com/facebox
 *  First ported to Prototype by Phil Burrows - http://blog.philburrows.com
 *
 *  Licensed under the MIT:
 *  http://www.opensource.org/licenses/mit-license.php
 *
 *  Need help?  Join the Google Groups mailing list:
 *  http://groups.google.com/group/facebox/
 *
 *  Dependencies:   prototype & script.aculo.us + images & CSS files from original facebox
 *  Usage:          Append 'rel="facebox"' to an element to call it inside a so-called facebox
 *
 *--------------------------------------------------------------------------*/


var Facebox = Class.create({
    initialize: function(extra_set) {
        this.settings = {
            loading_image: '/Includes/images/loading.gif',
            close_image: '/Includes/images/closelabel.gif',
            image_types: new RegExp('\.' + ['png', 'jpg', 'jpeg', 'gif'].join('|') + '$', 'i'),
            inited: true,
            facebox_html: '\
	  <div id="facebox" style="display:none;"> \
	    <div class="popup"> \
	      <table id="facebox_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"> \
	                <a href="#" class="close"> \
	                  <img src="/Includes/Images/closelabel.gif" title="close" class="close_image" /> \
	                </a> \
	              </div> \
	            </td> \
	            <td class="b"/> \
	          </tr> \
	          <tr> \
	            <td class="bl"/><td class="b"/><td class="br"/> \
	          </tr> \
	        </tbody> \
	      </table> \
	    </div> \
	  </div>'
        };
        if (extra_set) Object.extend(this.settings, extra_set);
        $(document.body).insert({ bottom: this.settings.facebox_html });

        this.preload = [new Image(), new Image()];
        this.preload[0].src = this.settings.close_image;
        this.preload[1].src = this.settings.loading_image;

        f = this;
        $$('#facebox .b:first, #facebox .bl, #facebox .br, #facebox .tl, #facebox .tr').each(function(elem) {
            f.preload.push(new Image());
            f.preload.slice(-1).src = elem.getStyle('background-image').replace(/url\((.+)\)/, '$1');
        });

        this.facebox = $('facebox');
        this.keyPressListener = this.watchKeyPress.bindAsEventListener(this);

        this.watchClickEvents();
        fb = this;
        Event.observe($$('#facebox .close').first(), 'click', function(e) {
            Event.stop(e);
            fb.close()
        });
        Event.observe($$('#facebox .close_image').first(), 'click', function(e) {
            Event.stop(e);
            fb.close()
        });
    },

    watchKeyPress: function(e) {
        // Close if espace is pressed or if there's a click outside of the facebox
        if (e.keyCode == 27 || !Event.element(e).descendantOf(this.facebox)) this.close();
    },

    watchClickEvents: function(e) {
        var f = this;
        $$('a[rel=facebox]').each(function(elem, i) {
            Event.observe(elem, 'click', function(e) {
                Event.stop(e);
                f.click_handler(elem, e);
            });
        });
    },

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

        contentWrapper = $$('#facebox .content').first();
        contentWrapper.childElements().each(function(elem, i) {
            elem.remove();
        });
        contentWrapper.insert({ bottom: '<div class="loading"><img src="' + this.settings.loading_image + '"/></div>' });

        var pageScroll = document.viewport.getScrollOffsets();
        this.facebox.setStyle({
            'top': pageScroll.top + (document.viewport.getHeight() / 10) + 'px',
            'left': document.viewport.getWidth() / 2 - (this.facebox.getWidth() / 2) + 'px'
        });

        Event.observe(document, 'keypress', this.keyPressListener);
        Event.observe(document, 'click', this.keyPressListener);
    },

    reveal: function(data, klass) {
        this.loading();
        load = $$('#facebox .loading').first();
        if (load) load.remove();

        contentWrapper = $$('#facebox .content').first();
        if (klass) contentWrapper.addClassName(klass);
        contentWrapper.insert({ bottom: data });

        $$('#facebox .body').first().childElements().each(function(elem, i) {
            elem.show();
        });

        if (!this.facebox.visible()) new Effect.Appear(this.facebox, { duration: .3 });
        this.facebox.setStyle({
            'left': document.viewport.getWidth() / 2 - (this.facebox.getWidth() / 2) + 'px'
        });

        Event.observe(document, 'keypress', this.keyPressListener);
        Event.observe(document, 'click', this.keyPressListener);
    },

    close: function() {
        new Effect.Fade('facebox', { duration: .3 });
    },

    click_handler: function(elem, e) {
        this.loading();
        Event.stop(e);

        // support for rel="facebox[.inline_popup]" syntax, to add a class
        /*
        var klass = elem.rel.match(/facebox\[\.(\w+)\]/);
        if (klass) klass = klass[1];
        */
        klass = "";


        new Effect.Appear(this.facebox, { duration: .3 });

        if (elem.href.match(/#/)) {
            var url = window.location.href.split('#')[0];
            var target = elem.href.replace(url + '#', '');
            // var data			= $$(target).first();
            var d = $(target);
            // create a new element so as to not delete the original on close()
            var data = new Element(d.tagName);
            data.innerHTML = d.innerHTML;
            this.reveal(data, klass);
        } else if (elem.href.match(this.settings.image_types)) {
            var image = new Image();
            fb = this;
            image.onload = function() {
                fb.reveal('<div class="image"><img src="' + image.src + '" /></div>', klass)
            }
            image.src = elem.href;
        } else {
            var fb = this;
            var url = elem.href;
            new Ajax.Request(url, {
                method: 'get',
                onFailure: function(transport) {
                    fb.reveal(transport.responseText, klass);
                },
                onSuccess: function(transport) {
                    fb.reveal(transport.responseText, klass);
                }
            });

        }
    }
});

var facebox;
document.observe('dom:loaded', function(){
	facebox = new Facebox();
});