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Filename : jquery.raty-fa.js
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/*!
 * jQuery Raty FA - A Star Rating Plugin with Font Awesome
 *
 * Licensed under The MIT License
 *
 * @author  : Jacob Overgaard
 * @doc     : http://jacob87.github.io/raty-fa/
 * @version : 0.1.1
 *
 */

;(function($) {

  var methods = {
    init: function(settings) {
      return this.each(function() {
        methods.destroy.call(this);

        this.opt = $.extend(true, {}, $.fn.raty.defaults, settings);

        var that  = $(this),
            inits = ['number', 'readOnly', 'score', 'scoreName'];

        methods._callback.call(this, inits);

        if (this.opt.precision) {
          methods._adjustPrecision.call(this);
        }

        this.opt.number = methods._between(this.opt.number, 0, this.opt.numberMax);

        this.stars = methods._createStars.call(this);
        this.score = methods._createScore.call(this);

        methods._apply.call(this, this.opt.score);

        if (this.opt.cancel) {
          this.cancel = methods._createCancel.call(this);
        }

        if (this.opt.width) {
          that.css('width', this.opt.width);
        }

        if (this.opt.readOnly) {
          methods._lock.call(this);
        } else {
          that.css('cursor', 'pointer');
          methods._binds.call(this);
        }

        methods._target.call(this, this.opt.score);

        that.data({ 'settings': this.opt, 'raty': true });
      });
    }, _adjustPrecision: function() {
      this.opt.targetType = 'score';
      this.opt.half       = true;
    }, _apply: function(score) {
      if (typeof score !== 'undefined' && score >= 0) {
        score = methods._between(score, 0, this.opt.number);
        this.score.val(score);
      }

      methods._fill.call(this, score);

      if (score) {
        methods._roundStars.call(this, score);
      }
    }, _between: function(value, min, max) {
      return Math.min(Math.max(parseFloat(value), min), max);
    }, _binds: function() {
      if (this.cancel) {
        methods._bindCancel.call(this);
      }

      methods._bindClick.call(this);
      methods._bindOut.call(this);
      methods._bindOver.call(this);
    }, _bindCancel: function() {
      methods._bindClickCancel.call(this);
      methods._bindOutCancel.call(this);
      methods._bindOverCancel.call(this);
    }, _bindClick: function() {
      var self = this,
          that = $(self);

      self.stars.on('click.raty', function(evt) {
        self.score.val((self.opt.half || self.opt.precision) ? that.data('score') : $(this).data('score'));

        if (self.opt.click) {
          self.opt.click.call(self, parseFloat(self.score.val()), evt);
        }
      });
    }, _bindClickCancel: function() {
      var self = this;

      self.cancel.on('click.raty', function(evt) {
        self.score.removeAttr('value');

        if (self.opt.click) {
          self.opt.click.call(self, null, evt);
        }
      });
    }, _bindOut: function() {
      var self = this;

      $(this).on('mouseleave.raty', function(evt) {
        var score = parseFloat(self.score.val()) || undefined;

        methods._apply.call(self, score);
        methods._target.call(self, score, evt);

        if (self.opt.mouseout) {
          self.opt.mouseout.call(self, score, evt);
        }
      });
    }, _bindOutCancel: function() {
      var self = this;

      self.cancel.on('mouseleave.raty', function(evt) {
        $(this).attr('class', self.opt.cancelOff);

        if (self.opt.mouseout) {
          self.opt.mouseout.call(self, self.score.val() || null, evt);
        }
      });
    }, _bindOverCancel: function() {
      var self = this;

      self.cancel.on('mouseover.raty', function(evt) {
        $(this).attr('class', self.opt.cancelOn);

        self.stars.attr('class', self.opt.starOff);

        methods._target.call(self, null, evt);

        if (self.opt.mouseover) {
          self.opt.mouseover.call(self, null);
        }
      });
    }, _bindOver: function() {
      var self   = this,
          that   = $(self),
          action = self.opt.half ? 'mousemove.raty' : 'mouseover.raty';

      self.stars.on(action, function(evt) {
        var score = parseInt($(this).data('score'), 10);

        if (self.opt.half) {
          var position = parseFloat((evt.pageX - $(this).offset().left) / (self.opt.size ? self.opt.size : parseInt(that.css('font-size')))),
              plus     = (position > .5) ? 1 : .5;

          score = score - 1 + plus;

          methods._fill.call(self, score);

          if (self.opt.precision) {
            score = score - plus + position;
          }

          methods._roundStars.call(self, score);

          that.data('score', score);
        } else {
          methods._fill.call(self, score);
        }

        methods._target.call(self, score, evt);

        if (self.opt.mouseover) {
          self.opt.mouseover.call(self, score, evt);
        }
      });
    }, _callback: function(options) {
      for (var i in options) {
        if (typeof this.opt[options[i]] === 'function') {
          this.opt[options[i]] = this.opt[options[i]].call(this);
        }
      }
    }, _createCancel: function() {
      var that   = $(this),
          icon   = this.opt.cancelOff,
          cancel = $('<i />', { 'class': icon, title: this.opt.cancelHint });

      if (this.opt.cancelPlace == 'left') {
        that.prepend('&#160;').prepend(cancel);
      } else {
        that.append('&#160;').append(cancel);
      }

      return cancel;
    }, _createScore: function() {
      return $('<input />', { type: 'hidden', name: this.opt.scoreName }).appendTo(this);
    }, _createStars: function() {
      var that = $(this);

      for (var i = 1; i <= this.opt.number; i++) {
        var title = methods._getHint.call(this, i),
            icon  = (this.opt.score && this.opt.score >= i) ? 'starOn' : 'starOff';

        icon = this.opt[icon];

        $('<i />', { 'class' : icon, title: title, 'data-score': i }).appendTo(this);

        if (this.opt.space) {
          that.append((i < this.opt.number) ? '&#160;' : '');
        }
      }

      return that.children('i');
    }, _error: function(message) {
      $(this).html(message);

      $.error(message);
    }, _fill: function(score) {
      var self  = this,
          hash  = 0;

      for (var i = 1; i <= self.stars.length; i++) {
        var star   = self.stars.eq(i - 1),
            select = self.opt.single ? (i == score) : (i <= score);

        if (self.opt.iconRange && self.opt.iconRange.length > hash) {
          var irange = self.opt.iconRange[hash],
              on     = irange.on  || self.opt.starOn,
              off    = irange.off || self.opt.starOff,
              icon   = select ? on : off;

          if (i <= irange.range) {
            star.attr('class', icon);
          }

          if (i == irange.range) {
            hash++;
          }
        } else {
          var icon = select ? 'starOn' : 'starOff';

          star.attr('class', this.opt[icon]);
        }
      }
    }, _getHint: function(score) {
      var hint = this.opt.hints[score - 1];
      return (hint === '') ? '' : (hint || score);
    }, _lock: function() {
      var score = parseInt(this.score.val(), 10), // TODO: 3.1 >> [['1'], ['2'], ['3', '.1', '.2']]
          hint  = score ? methods._getHint.call(this, score) : this.opt.noRatedMsg;

      $(this).data('readonly', true).css('cursor', '').attr('title', hint);

      this.score.attr('readonly', 'readonly');
      this.stars.attr('title', hint);

      if (this.cancel) {
        this.cancel.hide();
      }
    }, _roundStars: function(score) {
      var rest = (score - Math.floor(score)).toFixed(2);

      if (rest > this.opt.round.down) {
        var icon = 'starOn';                                 // Up:   [x.76 .. x.99]

        if (this.opt.halfShow && rest < this.opt.round.up) { // Half: [x.26 .. x.75]
          icon = 'starHalf';
        } else if (rest < this.opt.round.full) {             // Down: [x.00 .. x.5]
          icon = 'starOff';
        }

        this.stars.eq(Math.ceil(score) - 1).attr('class', this.opt[icon]);
      }                              // Full down: [x.00 .. x.25]
    }, _target: function(score, evt) {
      if (this.opt.target) {
        var target = $(this.opt.target);

        if (target.length === 0) {
          methods._error.call(this, 'Target selector invalid or missing!');
        }

        if (this.opt.targetFormat.indexOf('{score}') < 0) {
          methods._error.call(this, 'Template "{score}" missing!');
        }

        var mouseover = evt && evt.type == 'mouseover';

        if (score === undefined) {
          score = this.opt.targetText;
        } else if (score === null) {
          score = mouseover ? this.opt.cancelHint : this.opt.targetText;
        } else {
          if (this.opt.targetType == 'hint') {
            score = methods._getHint.call(this, Math.ceil(score));
          } else if (this.opt.precision) {
            score = parseFloat(score).toFixed(1);
          }

          if (!mouseover && !this.opt.targetKeep) {
            score = this.opt.targetText;
          }
        }

        if (score) {
          score = this.opt.targetFormat.toString().replace('{score}', score);
        }

        if (target.is(':input')) {
          target.val(score);
        } else {
          target.html(score);
        }
      }
    }, _unlock: function() {
      $(this).data('readonly', false).css('cursor', 'pointer').removeAttr('title');

      this.score.removeAttr('readonly', 'readonly');

      for (var i = 0; i < this.opt.number; i++) {
        this.stars.eq(i).attr('title', methods._getHint.call(this, i + 1));
      }

      if (this.cancel) {
        this.cancel.css('display', '');
      }
    }, cancel: function(click) {
      return this.each(function() {
        if ($(this).data('readonly') !== true) {
          methods[click ? 'click' : 'score'].call(this, null);
          this.score.removeAttr('value');
        }
      });
    }, click: function(score) {
      return $(this).each(function() {
        if ($(this).data('readonly') !== true) {
          methods._apply.call(this, score);

          if (!this.opt.click) {
            methods._error.call(this, 'You must add the "click: function(score, evt) { }" callback.');
          }


          this.opt.click.call(this, score, $.Event('click'));

          methods._target.call(this, score);
        }
      });
    }, destroy: function() {
      return $(this).each(function() {
        var that = $(this),
            raw  = that.data('raw');

        if (raw) {
          that.off('.raty').empty().css({ cursor: raw.style.cursor, width: raw.style.width }).removeData('readonly');
        } else {
          that.data('raw', that.clone()[0]);
        }
      });
    }, getScore: function() {
      var score = [],
          value ;

      $(this).each(function() {
        value = this.score.val();

        score.push(value ? parseFloat(value) : undefined);
      });

      return (score.length > 1) ? score : score[0];
    }, readOnly: function(readonly) {
      return this.each(function() {
        var that = $(this);

        if (that.data('readonly') !== readonly) {
          if (readonly) {
            that.off('.raty').children('i').off('.raty');

            methods._lock.call(this);
          } else {
            methods._binds.call(this);
            methods._unlock.call(this);
          }

          that.data('readonly', readonly);
        }
      });
    }, reload: function() {
      return methods.set.call(this, {});
    }, score: function() {
      return arguments.length ? methods.setScore.apply(this, arguments) : methods.getScore.call(this);
    }, set: function(settings) {
      return this.each(function() {
        var that   = $(this),
            actual = that.data('settings'),
            news   = $.extend({}, actual, settings);

        that.raty(news);
      });
    }, setScore: function(score) {
      return $(this).each(function() {
        if ($(this).data('readonly') !== true) {
          methods._apply.call(this, score);
          methods._target.call(this, score);
        }
      });
    }
  };

  $.fn.raty = function(method) {
    if (methods[method]) {
      return methods[method].apply(this, Array.prototype.slice.call(arguments, 1));
    } else if (typeof method === 'object' || !method) {
      return methods.init.apply(this, arguments);
    } else {
      $.error('Method ' + method + ' does not exist!');
    }
  };

  $.fn.raty.defaults = {
    cancel        : false,
    cancelHint    : 'Cancel this rating!',
    cancelOff     : 'fa fa-fw fa-minus-square',
    cancelOn      : 'fa fa-fw fa-check-square',
    cancelPlace   : 'left',
    click         : undefined,
    half          : false,
    halfShow      : true,
    hints         : ['bad', 'poor', 'regular', 'good', 'gorgeous'],
    iconRange     : undefined,
    mouseout      : undefined,
    mouseover     : undefined,
    noRatedMsg    : 'Not rated yet!',
    number        : 5,
    numberMax     : 20,
    precision     : false,
    readOnly      : false,
    round         : { down: .25, full: .6, up: .76 },
    score         : undefined,
    scoreName     : 'score',
    single        : false,
    size          : null,
    space         : true,
    starHalf      : 'fa fa-fw fa-star-half-o',
    starOff       : 'fa fa-fw fa-star-o',
    starOn        : 'fa fa-fw fa-star',
    target        : undefined,
    targetFormat  : '{score}',
    targetKeep    : false,
    targetText    : '',
    targetType    : 'hint',
    width         : false
  };

})(jQuery);