// Generated by CoffeeScript 1.6.3
/*
Lightbox v2.6
by Lokesh Dhakar - http://www.lokeshdhakar.com

For more information, visit:
http://lokeshdhakar.com/projects/lightbox2/

Licensed under the Creative Commons Attribution 2.5 License - http://creativecommons.org/licenses/by/2.5/
- free for use in both personal and commercial projects
- attribution requires leaving author name, author link, and the license info intact
*/


(function() {
  var $, Lightbox, LightboxOptions;

  $ = jQuery;

  LightboxOptions = (function() {
    function LightboxOptions() {
      this.fadeDuration = 500;
      this.fitImagesInViewport = true;
      this.resizeDuration = 700;
      this.showImageNumberLabel = true;
      this.wrapAround = false;
    }

    LightboxOptions.prototype.albumLabel = function(curImageNum, albumSize) {
      return "Image " + curImageNum + " of " + albumSize;
    };

    return LightboxOptions;

  })();

  Lightbox = (function() {
    function Lightbox(options) {
      this.options = options;
      this.album = [];
      this.currentImageIndex = void 0;
      this.init();
    }

    Lightbox.prototype.init = function() {
      this.enable();
      return this.build();
    };

    Lightbox.prototype.enable = function() {
      var _this = this;
      return $('body').on('click', 'a[rel^=lightbox], area[rel^=lightbox], a[data-lightbox], area[data-lightbox]', function(e) {
        _this.start($(e.currentTarget));
        return false;
      });
    };

    Lightbox.prototype.build = function() {
      var _this = this;
      $("<div id='lightboxOverlay' class='lightboxOverlay'></div><div id='lightbox' class='lightbox'><div class='lb-outerContainer'><div class='lb-container'><img class='lb-image' src='' /><div class='lb-nav'><a class='lb-prev' href='' ></a><a class='lb-next' href='' ></a></div><div class='lb-loader'><a class='lb-cancel'></a></div></div></div><div class='lb-dataContainer'><div class='lb-data'><div class='lb-details'><span class='lb-caption'></span><span class='lb-number'></span></div><div class='lb-closeContainer'><a class='lb-close'></a></div></div></div></div>").appendTo($('body'));
      this.$lightbox = $('#lightbox');
      this.$overlay = $('#lightboxOverlay');
      this.$outerContainer = this.$lightbox.find('.lb-outerContainer');
      this.$container = this.$lightbox.find('.lb-container');
      this.containerTopPadding = parseInt(this.$container.css('padding-top'), 10);
      this.containerRightPadding = parseInt(this.$container.css('padding-right'), 10);
      this.containerBottomPadding = parseInt(this.$container.css('padding-bottom'), 10);
      this.containerLeftPadding = parseInt(this.$container.css('padding-left'), 10);
      this.$overlay.hide().on('click', function() {
        _this.end();
        return false;
      });
      this.$lightbox.hide().on('click', function(e) {
        if ($(e.target).attr('id') === 'lightbox') {
          _this.end();
        }
        return false;
      });
      this.$outerContainer.on('click', function(e) {
        if ($(e.target).attr('id') === 'lightbox') {
          _this.end();
        }
        return false;
      });
      this.$lightbox.find('.lb-prev').on('click', function() {
        if (_this.currentImageIndex === 0) {
          _this.changeImage(_this.album.length - 1);
        } else {
          _this.changeImage(_this.currentImageIndex - 1);
        }
        return false;
      });
      this.$lightbox.find('.lb-next').on('click', function() {
        if (_this.currentImageIndex === _this.album.length - 1) {
          _this.changeImage(0);
        } else {
          _this.changeImage(_this.currentImageIndex + 1);
        }
        return false;
      });
      return this.$lightbox.find('.lb-loader, .lb-close').on('click', function() {
        _this.end();
        return false;
      });
    };

    Lightbox.prototype.start = function($link) {
      var $window, a, dataLightboxValue, i, imageNumber, left, top, _i, _j, _len, _len1, _ref, _ref1;
      $(window).on("resize", this.sizeOverlay);
      $('select, object, embed').css({
        visibility: "hidden"
      });
      this.$overlay.width($(document).width()).height($(document).height()).fadeIn(this.options.fadeDuration);
      this.album = [];
      imageNumber = 0;
      dataLightboxValue = $link.attr('data-lightbox');
      if (dataLightboxValue) {
        _ref = $($link.prop("tagName") + '[data-lightbox="' + dataLightboxValue + '"]');
        for (i = _i = 0, _len = _ref.length; _i < _len; i = ++_i) {
          a = _ref[i];
          this.album.push({
            link: $(a).attr('href'),
            title: $(a).attr('title')
          });
          if ($(a).attr('href') === $link.attr('href')) {
            imageNumber = i;
          }
        }
      } else {
        if ($link.attr('rel') === 'lightbox') {
          this.album.push({
            link: $link.attr('href'),
            title: $link.attr('title')
          });
        } else {
          _ref1 = $($link.prop("tagName") + '[rel="' + $link.attr('rel') + '"]');
          for (i = _j = 0, _len1 = _ref1.length; _j < _len1; i = ++_j) {
            a = _ref1[i];
            this.album.push({
              link: $(a).attr('href'),
              title: $(a).attr('title')
            });
            if ($(a).attr('href') === $link.attr('href')) {
              imageNumber = i;
            }
          }
        }
      }
      $window = $(window);
      top = $window.scrollTop() + $window.height() / 10;
      left = $window.scrollLeft();
      this.$lightbox.css({
        top: top + 'px',
        left: left + 'px'
      }).fadeIn(this.options.fadeDuration);
      this.changeImage(imageNumber);
    };

    Lightbox.prototype.changeImage = function(imageNumber) {
      var $image, preloader,
        _this = this;
      this.disableKeyboardNav();
      $image = this.$lightbox.find('.lb-image');
      this.sizeOverlay();
      this.$overlay.fadeIn(this.options.fadeDuration);
      $('.lb-loader').fadeIn('slow');
      this.$lightbox.find('.lb-image, .lb-nav, .lb-prev, .lb-next, .lb-dataContainer, .lb-numbers, .lb-caption').hide();
      this.$outerContainer.addClass('animating');
      preloader = new Image();
      preloader.onload = function() {
        var $preloader, imageHeight, imageWidth, maxImageHeight, maxImageWidth, windowHeight, windowWidth;
        $image.attr('src', _this.album[imageNumber].link);
        $preloader = $(preloader);
        imageWidth = preloader.width;
        imageHeight = preloader.height;
        if (_this.options.fitImagesInViewport) {
          windowWidth = $(window).width();
          windowHeight = $(window).height();
          maxImageWidth = windowWidth - _this.containerLeftPadding - _this.containerRightPadding - 20;
          maxImageHeight = windowHeight - _this.containerTopPadding - _this.containerBottomPadding - 110;
          if ((imageWidth > maxImageWidth) || (imageHeight > maxImageHeight)) {
            if ((imageWidth / maxImageWidth) > (imageHeight / maxImageHeight)) {
              imageWidth = maxImageWidth;
              imageHeight = parseInt(preloader.height / (preloader.width / maxImageWidth), 10);
            } else {
              imageHeight = maxImageHeight;
              imageWidth = parseInt(preloader.width / (preloader.height / maxImageHeight), 10);
            }
          }
        }
        $image.width(imageWidth);
        $image.height(imageHeight);
        return _this.sizeContainer(imageWidth, imageHeight);
      };
      preloader.src = this.album[imageNumber].link;
      this.currentImageIndex = imageNumber;
    };

    Lightbox.prototype.sizeOverlay = function() {
      return $('#lightboxOverlay').width($(document).width()).height($(document).height());
    };

    Lightbox.prototype.sizeContainer = function(imageWidth, imageHeight) {
      var newHeight, newWidth, oldHeight, oldWidth,
        _this = this;
      oldWidth = this.$outerContainer.outerWidth();
      oldHeight = this.$outerContainer.outerHeight();
      newWidth = imageWidth + this.containerLeftPadding + this.containerRightPadding;
      newHeight = imageHeight + this.containerTopPadding + this.containerBottomPadding;
      this.$outerContainer.animate({
        width: newWidth,
        height: newHeight
      }, this.options.resizeDuration, 'swing');
      setTimeout(function() {
        _this.$lightbox.find('.lb-dataContainer').width(newWidth);
        _this.$lightbox.find('.lb-prevLink').height(newHeight);
        _this.$lightbox.find('.lb-nextLink').height(newHeight);
        _this.showImage();
      }, this.options.resizeDuration);
    };

    Lightbox.prototype.showImage = function() {
      this.$lightbox.find('.lb-loader').hide();
      this.$lightbox.find('.lb-image').fadeIn('slow');
      this.updateNav();
      this.updateDetails();
      this.preloadNeighboringImages();
      this.enableKeyboardNav();
    };

    Lightbox.prototype.updateNav = function() {
      this.$lightbox.find('.lb-nav').show();
      if (this.album.length > 1) {
        if (this.options.wrapAround) {
          this.$lightbox.find('.lb-prev, .lb-next').show();
        } else {
          if (this.currentImageIndex > 0) {
            this.$lightbox.find('.lb-prev').show();
          }
          if (this.currentImageIndex < this.album.length - 1) {
            this.$lightbox.find('.lb-next').show();
          }
        }
      }
    };

    Lightbox.prototype.updateDetails = function() {
      var _this = this;
      if (typeof this.album[this.currentImageIndex].title !== 'undefined' && this.album[this.currentImageIndex].title !== "") {
        this.$lightbox.find('.lb-caption').html(this.album[this.currentImageIndex].title).fadeIn('fast');
      }
      if (this.album.length > 1 && this.options.showImageNumberLabel) {
        this.$lightbox.find('.lb-number').text(this.options.albumLabel(this.currentImageIndex + 1, this.album.length)).fadeIn('fast');
      } else {
        this.$lightbox.find('.lb-number').hide();
      }
      this.$outerContainer.removeClass('animating');
      this.$lightbox.find('.lb-dataContainer').fadeIn(this.resizeDuration, function() {
        return _this.sizeOverlay();
      });
    };

    Lightbox.prototype.preloadNeighboringImages = function() {
      var preloadNext, preloadPrev;
      if (this.album.length > this.currentImageIndex + 1) {
        preloadNext = new Image();
        preloadNext.src = this.album[this.currentImageIndex + 1].link;
      }
      if (this.currentImageIndex > 0) {
        preloadPrev = new Image();
        preloadPrev.src = this.album[this.currentImageIndex - 1].link;
      }
    };

    Lightbox.prototype.enableKeyboardNav = function() {
      $(document).on('keyup.keyboard', $.proxy(this.keyboardAction, this));
    };

    Lightbox.prototype.disableKeyboardNav = function() {
      $(document).off('.keyboard');
    };

    Lightbox.prototype.keyboardAction = function(event) {
      var KEYCODE_ESC, KEYCODE_LEFTARROW, KEYCODE_RIGHTARROW, key, keycode;
      KEYCODE_ESC = 27;
      KEYCODE_LEFTARROW = 37;
      KEYCODE_RIGHTARROW = 39;
      keycode = event.keyCode;
      key = String.fromCharCode(keycode).toLowerCase();
      if (keycode === KEYCODE_ESC || key.match(/x|o|c/)) {
        this.end();
      } else if (key === 'p' || keycode === KEYCODE_LEFTARROW) {
        if (this.currentImageIndex !== 0) {
          this.changeImage(this.currentImageIndex - 1);
        }
      } else if (key === 'n' || keycode === KEYCODE_RIGHTARROW) {
        if (this.currentImageIndex !== this.album.length - 1) {
          this.changeImage(this.currentImageIndex + 1);
        }
      }
    };

    Lightbox.prototype.end = function() {
      this.disableKeyboardNav();
      $(window).off("resize", this.sizeOverlay);
      this.$lightbox.fadeOut(this.options.fadeDuration);
      this.$overlay.fadeOut(this.options.fadeDuration);
      return $('select, object, embed').css({
        visibility: "visible"
      });
    };

    return Lightbox;

  })();

  $(function() {
    var lightbox, options;
    options = new LightboxOptions();
    return lightbox = new Lightbox(options);
  });

}).call(this);