IriSP.TagCloudWidget = function(Popcorn, config, Serializer) {

  IriSP.Widget.call(this, Popcorn, config, Serializer);

}

IriSP.TagCloudWidget.prototype = new IriSP.Widget();

IriSP.TagCloudWidget.prototype.draw = function() {

    var _stopwords = [

            'aussi', 'and', 'avec', 'aux', 'car', 'cette', 'comme', 'dans', 'donc', 'des', 'elle', 'est',

            'être', 'eux', 'fait', 'ici', 'ils', 'les', 'leur', 'leurs', 'mais', 'mes', 'même', 'mon', 'notre',

            'nos', 'nous', 'ont', 'par', 'pas', 'peu', 'pour', 'que', 'qui', 'ses' ,'son', 'sont', 'sur',

            'tes', 'très', 'the', 'ton', 'tous', 'tout', 'une', 'votre', 'vos', 'vous'

        ],

        _regexpword = /[^\s\.&;,'"!\?\d\(\)\+\[\]\\\…\-«»:\/]{3,}/g,

        _words = {},

        _showTitle = !this._config.excludeTitle,

        _showDescription = !this._config.excludeDescription,

        _tagCount = this._config.tagCount || 30;

    IriSP._(this._serializer._data.annotations).each(function(_annotation) {

       if (_annotation.content && _annotation.content.description) {

           var _txt = (_showTitle ? _annotation.content.title : '') + ' ' + (_showDescription ? _annotation.content.description : '')

           IriSP._(_txt.toLowerCase().match(_regexpword)).each(function(_mot) {

               if (_stopwords.indexOf(_mot) == -1) {

                   _words[_mot] = 1 + (_words[_mot] || 0);

               }

           })

       } 

    });

    _words = IriSP._(_words)

        .chain()

        .map(function(_v, _k) {

            return {

                "word" : _k,

                "count" : _v,

            }

        })

        .filter(function(_v) {

            return _v.count > 2;

        })

        .sortBy(function(_v) {

            return - _v.count;

        })

        .first(_tagCount)

        .value();

    var _max = _words[0].count,

        _min = Math.min(_words[_words.length - 1].count, _max - 1),

        _scale = 16 / Math.sqrt(_max - _min),

        _html = '<ul>'

            + IriSP._(_words)

                .chain()

                .shuffle()

                .map(function(_word) {

                    var _size = 10 + _scale * Math.sqrt(_word.count - _min);

                    return '<li style="font-size:'

                        + _size

                        + 'px;">'

                        + _word.word

                        + '</li>'

                })

                .value()

                .join("")

            + '</ul>';

    this.selector

        .addClass("Ldt-TagCloud")

        .html(_html);

}