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

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

    this.current_pilot_widget = this.pilot_widget

};

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

IriSP.Widgets.Arrow.prototype.defaults = {

    arrow_height : 16,

    arrow_width : 24,

    base_height : 0,

    base_curve : 0,

    fill_url: IriSP.widgetsDir + '/img/pinstripe.png',

    fill_color: "#ffffff", //Gradients can be used, e.g. "90-#000-#fff" for vertical white-to-black

    stroke_color: "#b7b7b7",

    stroke_width: 1.5,

    animation_speed: 20,

    pilot_widget: "Annotation"

}

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

    this.height = this.arrow_height + this.base_height;

    this.$.addClass("Ldt-Arrow").css({

        height: this.height + "px",

        "margin-top": "1px"

    });

    this.paper = new Raphael(this.container, this.width, this.height );

    window.myArrow = this;

    this.svgArrow = this.paper.path('M0,' + this.height + 'L' + this.width + ',' + this.height);

    this.svgArrow.attr({

        stroke: this.stroke_color,

        "stroke-width": this.stroke_width,

        fill: this.fill_url ? ( 'url(' + this.fill_url + ')' ) : this.fill_color

    });

    this.moveTo(0);

    this.bindPopcorn("IriSP.Arrow.updatePosition","onUpdatePosition");

    this.bindPopcorn("IriSP.Arrow.takeover","onTakeover");

    this.bindPopcorn("IriSP.Arrow.release","onRelease");

}

IriSP.Widgets.Arrow.prototype.drawAt = function(_x) {

    _x = Math.floor(Math.max(0, Math.min(_x, this.width)));

    var _d = 'M0,' + this.height

        + 'L0,' + Math.min( this.height, this.arrow_height + this.base_curve)

        + 'Q0,' + this.arrow_height

        + ' ' + Math.max(0, Math.min(this.base_curve, _x - this.arrow_width / 2)) + ',' + this.arrow_height

        + 'L' + Math.max(0, _x - this.arrow_width / 2) + ',' + this.arrow_height

        + 'L' + Math.max(0, _x - this.arrow_width / 2) + ',' + Math.min(this.arrow_height, 2 * this.arrow_height * _x / this.arrow_width)

        + 'L' + _x + ',0'

        + 'L' + Math.min(this.width, _x + this.arrow_width / 2) + ',' + Math.min(this.arrow_height, 2 * this.arrow_height * ( this.width - _x ) / this.arrow_width)

        + 'L' + Math.min(this.width, _x + this.arrow_width / 2) + ',' + this.arrow_height

        + 'L' + Math.min(this.width, Math.max(this.width - this.base_curve, _x + this.arrow_width / 2)) + ',' + this.arrow_height

        + 'Q' + this.width + ',' + this.arrow_height

        + ' ' + this.width + ',' + Math.min( this.height, this.arrow_height + this.base_curve)

        + 'L' + this.width + ',' + this.height;

    this.svgArrow.attr({

        path: _d

    });

}

IriSP.Widgets.Arrow.prototype.moveTo = function(_x) {

    this.targetX = Math.floor(Math.max(0, Math.min(_x, this.width)));

    if (typeof this.animInterval === "undefined") {

        this.animInterval = window.setInterval(

            this.functionWrapper("increment"),

            40

        )

    }

    this.increment();

}

IriSP.Widgets.Arrow.prototype.increment = function() {

    if (typeof this.currentX === "undefined") {

        this.currentX = this.targetX;

    }

    if (this.currentX < this.targetX) {

        this.currentX = Math.min(this.targetX, this.currentX + this.animation_speed);

    }

    if (this.currentX > this.targetX) {

        this.currentX = Math.max(this.targetX, this.currentX - this.animation_speed);

    }

    if (this.currentX === this.targetX) {

        window.clearInterval(this.animInterval);

        this.animInterval = undefined;

    }

    this.drawAt(this.currentX);

}

IriSP.Widgets.Arrow.prototype.onUpdatePosition = function(_param) {

    if (_param.widget === this.current_pilot_widget) {

        if (typeof _param.x !== "undefined") {

            this.moveTo(_param.x);

        } else {

            this.moveTo(this.width * _param.time / this.source.getDuration());

        }

    }

}

IriSP.Widgets.Arrow.prototype.onTakeover = function(_widget) {

    this.current_pilot_widget = _widget;

}

IriSP.Widgets.Arrow.prototype.onRelease = function(_widget) {

    this.current_pilot_widget = this.pilot_widget;

}