$(function() {
    "use strict";
    
    $(function($) {
        
        "use strict";

        $(".knob").knob({
            change : function (value) {
                //console.log("change : " + value);
            },
            release : function (value) {
                //console.log(this.$.attr('value'));
                console.log("release : " + value);
            },
            cancel : function () {
                console.log("cancel : ", this);
            },
            /*format : function (value) {
             return value + '%';
             },*/
            draw : function () {

                // "tron" case
                if(this.$.data('skin') == 'tron') {

                    this.cursorExt = 0.3;

                    var a = this.arc(this.cv)  // Arc
                            , pa                   // Previous arc
                            , r = 1;

                    this.g.lineWidth = this.lineWidth;

                    if (this.o.displayPrevious) {
                        pa = this.arc(this.v);
                        this.g.beginPath();
                        this.g.strokeStyle = this.pColor;
                        this.g.arc(this.xy, this.xy, this.radius - this.lineWidth, pa.s, pa.e, pa.d);
                        this.g.stroke();
                    }

                    this.g.beginPath();
                    this.g.strokeStyle = r ? this.o.fgColor : this.fgColor ;
                    this.g.arc(this.xy, this.xy, this.radius - this.lineWidth, a.s, a.e, a.d);
                    this.g.stroke();

                    this.g.lineWidth = 2;
                    this.g.beginPath();
                    this.g.strokeStyle = this.o.fgColor;
                    this.g.arc( this.xy, this.xy, this.radius - this.lineWidth + 1 + this.lineWidth * 2 / 3, 0, 2 * Math.PI, false);
                    this.g.stroke();

                    return false;
                }
            }
        });

        $('.knob2').knob({
            'format' : function (value) {
                return value + '%';
             }
        });

        // Example of infinite knob, iPod click wheel
        var v, up=0,down=0,i=0
            ,$idir = $("div.idir")
            ,$ival = $("div.ival")
            ,incr = function() { i++; $idir.show().html("+").fadeOut(); $ival.html(i); }
            ,decr = function() { i--; $idir.show().html("-").fadeOut(); $ival.html(i); };
            $("input.infinite").knob(
            {
                min : 0
                , max : 20
                , stopper : false
                , change : function () {
                if(v > this.cv){
                    if(up){
                        decr();
                        up=0;
                    }else{up=1;down=0;}
                } else {
                    if(v < this.cv){
                        if(down){
                            incr();
                            down=0;
                        }else{down=1;up=0;}
                    }
                }
                v = this.cv;
            }
        });
    });
});