IriSP.Widgets.Sparkline = function(player, config) {

    IriSP.Widgets.Widget.call(this, player, config);

};

IriSP.Widgets.Sparkline.prototype = new IriSP.Widgets.Widget();

IriSP.Widgets.Sparkline.prototype.defaults = {

   lineColor : "#7492b4",

   fillColor : "#aeaeb8",

   lineWidth : 2,

   slice_count : 20,

   height : 50,

   margin : 5

};

IriSP.Widgets.Sparkline.prototype.draw = function() {

    var _slices = [],

        _duration = this.source.getDuration(),

        _max = 0,

        _list = this.getWidgetAnnotations();

    for (var _i = 0; _i < this.slice_count; _i++) {

        var _begin = (_i*_duration/this.slice_count),

            _end = ((_i+1)*_duration/this.slice_count),

            _volume = 0;

            _list.forEach(function(_annotation) {

                if (_annotation.begin < _end && _annotation.end >= _begin) {

                    var _d = _annotation.getDuration().milliseconds;

                    if (!_d) {

                        _volume += 1;

                    } else {

                        _volume += (Math.min(_annotation.end, _end) - Math.max(_annotation.begin, _begin)) / _d;

                    }

                }

            });

            _max = Math.max(_max, _volume);

        _slices.push(_volume);

    }

    if (!_max) {

        return;

    }

    this.paper = new Raphael(this.$[0], this.width, this.height);

    var _scale = (this.height - this.margin) / _max,

        _width = this.width / this.slice_count,

        _this = this,

        _y = IriSP._(_slices).map(function(_v) {

            return _this.margin + _this.height - (_scale * _v);

        }),

        _d = IriSP._(_y).reduce(function(_memo, _v, _k) {

               return _memo + ( _k

                   ? 'C' + (_k * _width) + ' ' + _y[_k - 1] + ' ' + (_k * _width) + ' ' + _v + ' ' + ((_k + .5) * _width) + ' ' + _v

                   : 'M0 ' + _v + 'L' + (.5*_width) + ' ' + _v );

            },'') + 'L' + this.width + ' ' + _y[_y.length - 1],

        _d2 = _d + 'L' + this.width + ' ' + this.height + 'L0 ' + this.height;

    this.paper.path(_d2).attr({

        "stroke" : "none",

        "fill" : this.fillColor

    });

    this.paper.path(_d).attr({

        "fill" : "none",

        "stroke" : this.lineColor,

        "stroke-width" : this.lineWidth

    });

    this.rectangleProgress = this.paper.rect(0,0,0,this.height)

        .attr({

            "stroke" : "none",

            "fill" : "#808080",

            "opacity" : .3

        });

    this.ligneProgress = this.paper.path("M0 0L0 "+this.height).attr({"stroke":"#ff00ff", "line-width" : 2});

    this.$.click(function(_e) {

        var _x = _e.pageX - _this.$.offset().left;

        _this.media.setCurrentTime(_this.media.duration * _x / _this.width);

    });

    this.onMediaEvent("timeupdate","onTimeupdate");

};

IriSP.Widgets.Sparkline.prototype.onTimeupdate = function(_time) {

    var _x = Math.floor( this.width * _time / this.media.duration);

    this.rectangleProgress.attr({

        "width" : _x

    });

    this.ligneProgress.attr({

        "path" : "M" + _x + " 0L" + _x + " " + this.height

    });

};