mail/src/lib/iscroll/iscroll-min.js

/*! iScroll v5.0.5 ~ (c) 2008-2013 Matteo Spinelli ~ http://cubiq.org/license */
var IScroll=function(t,i,s){function e(t,s){this.wrapper="string"==typeof t?i.querySelector(t):t,this.scroller=this.wrapper.children[0],this.scrollerStyle=this.scroller.style,this.options={resizeIndicator:!0,mouseWheelSpeed:20,snapThreshold:.334,startX:0,startY:0,scrollY:!0,directionLockThreshold:5,momentum:!0,bounce:!0,bounceTime:600,bounceEasing:"",preventDefault:!0,preventDefaultException:{tagName:/^(INPUT|TEXTAREA|BUTTON|SELECT)$/},HWCompositing:!0,useTransition:!0,useTransform:!0};for(var e in s)this.options[e]=s[e];this.translateZ=this.options.HWCompositing&&h.hasPerspective?" translateZ(0)":"",this.options.useTransition=h.hasTransition&&this.options.useTransition,this.options.useTransform=h.hasTransform&&this.options.useTransform,this.options.eventPassthrough=this.options.eventPassthrough===!0?"vertical":this.options.eventPassthrough,this.options.preventDefault=!this.options.eventPassthrough&&this.options.preventDefault,this.options.scrollY="vertical"==this.options.eventPassthrough?!1:this.options.scrollY,this.options.scrollX="horizontal"==this.options.eventPassthrough?!1:this.options.scrollX,this.options.freeScroll=this.options.freeScroll&&!this.options.eventPassthrough,this.options.directionLockThreshold=this.options.eventPassthrough?0:this.options.directionLockThreshold,this.options.bounceEasing="string"==typeof this.options.bounceEasing?h.ease[this.options.bounceEasing]||h.ease.circular:this.options.bounceEasing,this.options.resizePolling=void 0===this.options.resizePolling?60:this.options.resizePolling,this.options.tap===!0&&(this.options.tap="tap"),this.options.invertWheelDirection=this.options.invertWheelDirection?-1:1,this.x=0,this.y=0,this.directionX=0,this.directionY=0,this._events={},this._init(),this.refresh(),this.scrollTo(this.options.startX,this.options.startY),this.enable()}function o(t,s,e){var o=i.createElement("div"),n=i.createElement("div");return e===!0&&(o.style.cssText="position:absolute;z-index:9999",n.style.cssText="-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;position:absolute;background:rgba(0,0,0,0.5);border:1px solid rgba(255,255,255,0.9);border-radius:3px"),n.className="iScrollIndicator","h"==t?(e===!0&&(o.style.cssText+=";height:7px;left:2px;right:2px;bottom:0",n.style.height="100%"),o.className="iScrollHorizontalScrollbar"):(e===!0&&(o.style.cssText+=";width:7px;bottom:2px;top:2px;right:1px",n.style.width="100%"),o.className="iScrollVerticalScrollbar"),s||(o.style.pointerEvents="none"),o.appendChild(n),o}function n(s,e){this.wrapper="string"==typeof e.el?i.querySelector(e.el):e.el,this.indicator=this.wrapper.children[0],this.indicatorStyle=this.indicator.style,this.scroller=s,this.options={listenX:!0,listenY:!0,interactive:!1,resize:!0,defaultScrollbars:!1,speedRatioX:0,speedRatioY:0};for(var o in e)this.options[o]=e[o];this.sizeRatioX=1,this.sizeRatioY=1,this.maxPosX=0,this.maxPosY=0,this.options.interactive&&(h.addEvent(this.indicator,"touchstart",this),h.addEvent(this.indicator,"MSPointerDown",this),h.addEvent(this.indicator,"mousedown",this),h.addEvent(t,"touchend",this),h.addEvent(t,"MSPointerUp",this),h.addEvent(t,"mouseup",this))}var r=t.requestAnimationFrame||t.webkitRequestAnimationFrame||t.mozRequestAnimationFrame||t.oRequestAnimationFrame||t.msRequestAnimationFrame||function(i){t.setTimeout(i,1e3/60)},h=function(){function e(t){return r===!1?!1:""===r?t:r+t.charAt(0).toUpperCase()+t.substr(1)}var o={},n=i.createElement("div").style,r=function(){for(var t,i=["t","webkitT","MozT","msT","OT"],s=0,e=i.length;e>s;s++)if(t=i[s]+"ransform",t in n)return i[s].substr(0,i[s].length-1);return!1}();o.getTime=Date.now||function(){return(new Date).getTime()},o.extend=function(t,i){for(var s in i)t[s]=i[s]},o.addEvent=function(t,i,s,e){t.addEventListener(i,s,!!e)},o.removeEvent=function(t,i,s,e){t.removeEventListener(i,s,!!e)},o.momentum=function(t,i,e,o,n){var r,h,a=t-i,l=s.abs(a)/e,c=6e-4;return r=t+l*l/(2*c)*(0>a?-1:1),h=l/c,o>r?(r=n?o-n/2.5*(l/8):o,a=s.abs(r-t),h=a/l):r>0&&(r=n?n/2.5*(l/8):0,a=s.abs(t)+r,h=a/l),{destination:s.round(r),duration:h}};