/**
 * SqueezeBox - Expandable Lightbox
 * 
 * Allows to open various content as modal,
 * centered and animated box.
 * 
 * Dependencies: MooTools 1.2+ (09/2007)
 * 
 * Inspired by 
 *  ... Lokesh Dhakar - The original Lightbox v2
 * 
 * @version   1.0rc2
 * 
 * @license   MIT-style license
 * @author    Harald Kirschner <mail [at] digitarald.de>
 * @copyright Author
 */
var SqueezeBox = {

  presets: {
    size: {x: 600, y: 450},
    sizeLoading: {x: 200, y: 150},
    marginInner: {x: 20, y: 20},
    marginImage: {x: 150, y: 200},
    handler: false,
    target: null,
    closeWithOverlay: true,
    zIndex: 65555,
    overlayOpacity: 0.7,
    classWindow: '',
    classOverlay: '',
    disableFx: false,
    onOpen: $empty,
    onClose: $empty,
    onUpdate: $empty,
    onResize: $empty,
    onMove: $empty,
    onShow: $empty,
    onHide: $empty,
    fxOverlayDuration: 250,
    fxResizeDuration: 750,
    fxResizeTransition: Fx.Transitions.Quint.easeOut,
    fxContentDuration: 250,
    ajaxOptions: {}
  },

  initialize: function(options) {
    if (this.options) return this;
    this.presets = $merge(this.presets, options);
    this.setOptions(this.presets).build();
    this.listeners = {
      window: this.reposition.bind(this, [null]),
      close: this.close.bind(this),
      key: this.onKey.bind(this)
    };
    this.isOpen = this.isLoading = false;
    return this;
  },

  build: function() {
    this.content = new Element('div', {id: 'sbox-content'});
    this.btnClose = new Element('a', {id: 'sbox-btn-close', href: '#'});
    this.overlay = new Element('div', {
      id: 'sbox-overlay',
      styles: {display: 'none', zIndex: this.options.zIndex}
    }).inject(document.body);
    this.win = new Element('div', {
      id: 'sbox-window',
      styles: {display: 'none', zIndex: this.options.zIndex + 2}
    }).adopt(this.btnClose, this.content).inject(document.body);
    this.fx = {
      overlay: new Fx.Style(this.overlay, 'opacity', {
        duration: this.options.fxOverlayDuration,
        wait: false
      }).set(0),
      win: new Fx.Styles(this.win, {
        duration: this.options.fxResizeDuration,
        transition: this.options.fxResizeTransition,
        wait: false,
        unit: 'px'
      }),
      content: new Fx.Style(this.content, 'opacity', {
        duration: this.options.fxContentDuration,
        wait: false
      }).set(0)
    };
  },

  addClick: function(el) {
    return el.addEvent('click', function() {
      return !SqueezeBox.fromElement(this);
    });
  },

  fromElement: function(el, options) {
    this.initialize();
    this.element = $(el);
    this.setOptions($merge(this.presets, options || {}, (this.element && this.element.rel) ? Json.evaluate(this.element.rel) : {}));
    this.assignOptions();
    this.url = ((this.element) ? (this.options.url || this.element.getProperty('href')) : el) || '';
    if (this.options.handler) {
      var handler = this.options.handler;
      return this.setContent(handler, this.parsers[handler].call(this, true));
    }
    var res;
    for (var key in this.parsers) {
      if ((res = this.parsers[key].call(this))) return this.setContent(key, res);
    }
    return false;
  },

  assignOptions: function() {
    this.overlay.setProperty('class', this.options.classOverlay);
    this.win.setProperty('class', this.options.classWindow);
    if (Client.Engine.ie6) this.win.addClass('sbox-window-ie6');
  },

  close: function(e) {
    if (e) new Event(e).stop();
    if (!this.isOpen) return this;
    this.fx.overlay.start(0).chain(this.toggleOverlay.bind(this));
    this.win.setStyle('display', 'none');
    this.trashImage();
    this.toggleListeners();
    this.isOpen = null;
    this.fireEvent('onClose', [this.content]).removeEvents();
    this.options = {};
    this.setOptions(this.presets).callChain();
    return this;
  },

  onError: function() {
    if (this.image) this.trashImage();
    this.setContent('Error during loading');
  },

  trashImage: function() {
    if (this.image) this.image = this.image.onload = this.image.onerror = this.image.onabort = null;
  },

  setContent: function(handler, content) {
    if (!this.handlers[handler]) return false;
    this.content.setProperty('class', 'sbox-content-' + handler);
    this.applyTimer = this.applyContent.delay(this.fx.overlay.options.duration, this, this.handlers[handler].call(this, content));
    if (this.overlay.$attributes.opacity) return this;
    this.toggleOverlay(true);
    this.fx.overlay.start(this.options.overlayOpacity);
    this.reposition();
    return this;
  },

  applyContent: function(content, size) {
    this.applyTimer = $clear(this.applyTimer);
    this.hideContent();
    if (!content) this.toggleLoading(true);
    else {
      if (this.isLoading) this.toggleLoading(false);
      this.fireEvent('onUpdate', [this.content], 20);
    }
    this.content.empty()[['string', 'array', false].contains($type(content)) ? 'setHTML' : 'adopt'](content || '');
    this.callChain();
    if (!this.isOpen) {
      this.toggleListeners(true);
      this.resize(size, true);
      this.isOpen = true;
      this.fireEvent('onOpen', [this.content]);
    } else this.resize(size);
  },

  resize: function(size, instantly) {
    var sizes = window.getSize();
    this.size = $merge(this.isLoading ? this.options.sizeLoading : this.options.size, size);
    var to = {
      width: this.size.x, height: this.size.y,
      left: (sizes.scroll.x + (sizes.size.x - this.size.x - this.options.marginInner.x) / 2).toInt(),
      top: (sizes.scroll.y + (sizes.size.y - this.size.y - this.options.marginInner.y) / 2).toInt()
    };
    $clear(this.showTimer || null);
    this.hideContent();
    if (!instantly) {
      this.fx.win.start(to).chain(this.showContent.bind(this));
    } else {
      this.win.setStyles(to).setStyle('display', '');
      this.showTimer = this.showContent.delay(50, this);
    }
    return this.reposition(sizes);
  },

  toggleListeners: function(state) {
    var task = state ? 'addEvent' : 'removeEvent';
    this.btnClose[task]('click', this.listeners.close);
    if (this.options.closeWithOverlay) this.overlay[task]('click', this.listeners.close);
    document[task]('keydown', this.listeners.key);
    window[task]('resize', this.listeners.window);
    window[task]('scroll', this.listeners.window);
  },

  toggleLoading: function(state) {
    this.isLoading = state;
    this.win[state ? 'addClass' : 'removeClass']('sbox-loading');
    if (state) this.fireEvent('onLoading', [this.win]);
  },

  toggleOverlay: function(state) {
    this.overlay.setStyle('display', state ? '' : 'none');
    document.body[state ? 'addClass' : 'removeClass']('body-overlayed');
  },

  showContent: function() {
    if (this.content.$attributes.opacity) this.fireEvent('onShow', [this.win]);
    this.fx.content.start(1);
  },

  hideContent: function() {
    if (!this.content.$attributes.opacity) this.fireEvent('onHide', [this.win]);
    this.fx.content.set(0);
  },

  onKey: function(e) {
    switch (e.key) {
      case 'esc':
        this.close();
        break;
    }
  },

  reposition: function(sizes) {
    sizes = sizes || window.getSize();
    this.overlay.setStyles({
      left: sizes.scroll.x, top: sizes.scroll.y,
      width: sizes.size.x, height: sizes.size.y
    });
    this.win.setStyles({
      left: (sizes.scroll.x + (sizes.size.x - this.win.offsetWidth) / 2).toInt(),
      top: (sizes.scroll.y + (sizes.size.y - this.win.offsetHeight) / 2).toInt()
    });
    return this.fireEvent('onMove', [this.overlay, this.win, sizes]);
  },

  removeEvents: function(type){
    if (!this.$events) return this;
    if (!type) this.$events = null;
    else if (this.$events[type]) this.$events[type] = null;
    return this;
  },

  parsers: {
    'image': function(preset) {
      return (preset || this.url.test(/\.(jpg|jpeg|png|gif|bmp)$/i)) ? this.url : false;
    },
    'clone': function(preset) {
      if ($(this.options.target)) return $(this.options.target);
      if (preset || (this.element && !this.element.parentNode)) return this.element;
      var bits = this.url.match(/#([\w-]+)$/);
      return (bits) ? $(bits[1]) : false;
    },
    'url': function(preset) {
      return (preset || (this.url && !this.url.test(/^javascript:/i))) ? this.url: false;
    },
    'iframe': function(preset) {
      return (preset || this.url) ? this.url : false;
    },
    'string': function(preset) {
      return true;
    }
  },

  handlers: {
    'image': function(url) {
      var size, tmp = new Image();
      this.image = null;
      tmp.onload = tmp.onabort = tmp.onerror = (function() {
        tmp.onload = tmp.onabort = tmp.onerror = null;
        if (!tmp.width) {
          this.onError.delay(10, this);
          return;
        }
        var win = {x: window.getWidth() - this.options.marginImage.x, y: window.getHeight() - this.options.marginImage.y};
        size = {x: tmp.width, y: tmp.height};
        for (var i = 2; i--;) {
          if (size.x > win.x) {
            size.y *= win.x / size.x;
            size.x = win.x;
          } else if (size.y > win.y) {
            size.x *= win.y / size.y;
            size.y = win.y;
          }
        }
        size.x = size.x.toInt();
        size.y = size.y.toInt();
        this.image = (Client.Engine.webkit419) ? new Element('img', {src: this.image.src}) : $(tmp);
        tmp = null;
        this.image.setProperties({width: size.x, height: size.y});
        if (this.isOpen) this.applyContent(this.image, size);
      }).bind(this);
      tmp.src = url;
      if (tmp && tmp.onload && tmp.complete) tmp.onload();
      return (this.image) ? [this.image, size] : null;
    },
    'clone': function(el) {
      return el.clone();
    },
    'adopt': function(el) {
      return el;
    },
    'url': function(url) {
      this.ajax = new Ajax(url, this.options.ajaxOptions);
      this.ajax.addEvents({
        'onSuccess': function(resp) {
          this.applyContent(resp);
          this.ajax = null;
        }.bind(this),
        'onFailure': this.onError.bind(this)
      }).request.delay(10, this.ajax);
    },
    'iframe': function(url) {
      return new Element('iframe', {
        src: url,
        frameBorder: 0,
        width: this.options.size.x,
        height: this.options.size.y
      });
    },
    'string': function(str) {
      return str;
    }
  },

  extend: $extend
};

SqueezeBox.parsers.adopt = SqueezeBox.parsers.clone;

SqueezeBox.extend(Events.prototype).extend(Options.prototype).extend(Chain.prototype);

window.addEvent('domready', function() {

      SqueezeBox.initialize({
        size: {x: 350, y: 400},
        ajaxOptions: {
          method: 'get'
        }
      });


      $$('a.boxed').each(function(el) {
        el.addEvent('click', function(e) {
          new Event(e).stop();
          SqueezeBox.fromElement(el);
        });
      });

    });