// Generated by CoffeeScript 1.4.0
(function() {
  var __bind = function(fn, me){ return function(){ return fn.apply(me, arguments); }; };

  $(function() {
    var Presentation;
    Presentation = (function() {

      function Presentation(target) {
        this.target = target;
        this.stopPresentation = __bind(this.stopPresentation, this);

        this.startPresentation = __bind(this.startPresentation, this);

        this.target = $(this.target);
        this.id = this.target.parents('.entry').data('uuid');
        this.target.attr('id', "presentation-" + this.id);
        this.target.addClass('prepared');
        this.target.data('self', this);
        this.resizeImage(300);
        this.slides = this.createSlides(this.target.find('div.slide'));
        this.setStartButton();
      }

      Presentation.prototype.resizeImage = function(w) {
        var img, _i, _len, _ref, _results;
        _ref = this.target.find('img');
        _results = [];
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          img = _ref[_i];
          $(img).data('orig-width', $(img).width());
          _results.push($(img).attr('width', Math.min($(img).width(), w)));
        }
        return _results;
      };

      Presentation.prototype.resetSizeImage = function() {
        var img, _i, _len, _ref, _results;
        _ref = this.target.find('img');
        _results = [];
        for (_i = 0, _len = _ref.length; _i < _len; _i++) {
          img = _ref[_i];
          _results.push($(img).attr('width', $(img).data('orig-width')));
        }
        return _results;
      };

      Presentation.prototype.createSlides = function(slideDivs) {
        var idx, slide, slides;
        return slides = (function() {
          var _i, _len, _results;
          _results = [];
          for (idx = _i = 0, _len = slideDivs.length; _i < _len; idx = ++_i) {
            slide = slideDivs[idx];
            _results.push(this.createSlide(slide, idx));
          }
          return _results;
        }).call(this);
      };

      Presentation.prototype.createSlide = function(div, idx) {
        var $page;
        $page = $(div).data('pid', idx);
        $page.append(this.createFooter(idx));
        return $page;
      };

      Presentation.prototype.setStartButton = function() {
        var $startButton;
        $startButton = $('<button>', {
          "class": 'start-button'
        }).text('start presentation').on('click', this.startPresentation);
        return $startButton.insertBefore(this.target);
      };

      Presentation.prototype.startPresentation = function() {
        var hash, match, pid;
        this.resetSizeImage();
        hash = document.location.hash;
        pid = 0;
        this.target.addClass('current');
        if ((hash != null) && (match = hash.match(/^\#(\d+)/))) {
          pid = match[1];
        }
        return $(this.slides[pid]).addClass('current');
      };

      Presentation.prototype.stopPresentation = function() {
        this.resizeImage(300);
        this.target.removeClass('current');
        $(this.slides).each(function(slide) {
          return $(slide);
        });
        return document.location.hash = 0;
      };

      Presentation.prototype.nextPage = function() {
        var $current, pid;
        $current = this.target.find('.current');
        $current.removeClass('current');
        pid = $current.data('pid');
        if (this.slides[pid + 1] != null) {
          this.slides[pid + 1].addClass('current');
          return document.location.hash = pid + 1;
        } else {
          return this.stopPresentation();
        }
      };

      Presentation.prototype.prevPage = function() {
        var $current, pid, _ref;
        $current = this.target.find('.current');
        $current.removeClass('current');
        pid = $current.data('pid');
        if (this.slides[pid - 1] != null) {
          if ((_ref = this.slides[pid - 1]) != null) {
            _ref.addClass('current');
          }
          return document.location.hash = pid - 1;
        } else {
          return this.stopPresentation();
        }
      };

      Presentation.prototype.goTopPage = function() {
        var $current;
        $current = this.target.find('.current');
        $current.removeClass('current');
        return this.slides[0].addClass('current');
      };

      Presentation.prototype.showSummary = function() {};

      Presentation.prototype.createFooter = function(idx) {
        var footer;
        footer = $('<footer>');
        return footer.append($('<span>', {
          "class": 'page-id'
        }).text("" + idx + " / " + (this.target.find('.slide').length)));
      };

      return Presentation;

    })();
    $('.presentation').each(function(idx, presentation) {
      return new Presentation(presentation);
    });
    return $(document).keyup(function(ev) {
      var _ref, _ref1, _ref2, _ref3, _ref4;
      if (ev.which === 27) {
        return (_ref = $('.presentation.current').data('self')) != null ? typeof _ref.stopPresentation === "function" ? _ref.stopPresentation() : void 0 : void 0;
      } else if (ev.which === 39) {
        return (_ref1 = $('.presentation.current').data('self')) != null ? typeof _ref1.nextPage === "function" ? _ref1.nextPage() : void 0 : void 0;
      } else if (ev.which === 37) {
        return (_ref2 = $('.presentation.current').data('self')) != null ? typeof _ref2.prevPage === "function" ? _ref2.prevPage() : void 0 : void 0;
      } else if (ev.which === 38) {
        return (_ref3 = $('.presentation.current').data('self')) != null ? typeof _ref3.goTopPage === "function" ? _ref3.goTopPage() : void 0 : void 0;
      } else if (ev.which === 40) {
        return (_ref4 = $('.presentation.current').data('self')) != null ? typeof _ref4.showSummary === "function" ? _ref4.showSummary() : void 0 : void 0;
      }
    });
  });

}).call(this);