1 line
4.5 KiB
JavaScript
1 line
4.5 KiB
JavaScript
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"use strict";function polyfill(){function o(o){var t=["MSIE ","Trident/","Edge/"];return new RegExp(t.join("|")).test(o)}function t(o,t){this.scrollLeft=o,this.scrollTop=t}function e(o){return.5*(1-Math.cos(Math.PI*o))}function l(o){if(null===o||"object"!=typeof o||void 0===o.behavior||"auto"===o.behavior||"instant"===o.behavior)return!0;if("object"==typeof o&&"smooth"===o.behavior)return!1;throw new TypeError("behavior member of ScrollOptions "+o.behavior+" is not a valid value for enumeration ScrollBehavior.")}function r(o,t){return"Y"===t?o.clientHeight+b<o.scrollHeight:"X"===t?o.clientWidth+b<o.scrollWidth:void 0}function i(o,t){var e=u.getComputedStyle(o,null)["overflow"+t];return"auto"===e||"scroll"===e}function n(o){var t=r(o,"Y")&&i(o,"Y"),e=r(o,"X")&&i(o,"X");return t||e}function c(o){for(;o!==m.body&&!1===n(o);)o=o.parentNode||o.host;return o}function s(o){var t,l,r,i=y(),n=(i-o.startTime)/h;n=n>1?1:n,t=e(n),l=o.startX+(o.x-o.startX)*t,r=o.startY+(o.y-o.startY)*t,o.method.call(o.scrollable,l,r),l===o.x&&r===o.y||u.requestAnimationFrame(s.bind(u,o))}function a(o,e,l){var r,i,n,c,a=y();o===m.body?(r=u,i=u.scrollX||u.pageXOffset,n=u.scrollY||u.pageYOffset,c=w.scroll):(r=o,i=o.scrollLeft,n=o.scrollTop,c=t),s({scrollable:r,method:c,startTime:a,startX:i,startY:n,x:e,y:l})}for(var f=0,p=["ms","moz","webkit","o"],d=0;d<p.length&&!window.requestAnimationFrame;++d)window.requestAnimationFrame=window[p[d]+"RequestAnimationFrame"],window.cancelAnimationFrame=window[p[d]+"CancelAnimationFrame"]||window[p[d]+"CancelRequestAnimationFrame"];window.requestAnimationFrame||(window.requestAnimationFrame=function(o,t){var e=(new Date).getTime(),l=Math.max(0,16-(e-f)),r=window.setTimeout(function(){o(e+l)},l);return f=e+l,r}),window.cancelAnimationFrame||(window.cancelAnimationFrame=function(o){clearTimeout(o)});var u=window,m=document;if(!("scrollBehavior"in m.documentElement.style&&!0!==u.__forceSmoothScrollPolyfill__)){var v=u.HTMLElement||u.Element,h=468,w={scroll:u.scroll||u.scrollTo,scrollBy:u.scrollBy,elementScroll:v.prototype.scroll||t,scrollIntoView:v.prototype.scrollIntoView},y=u.performance&&u.performance.now?u.performance.now.bind(u.performance):Date.now,b=o(u.navigator.userAgent)?1:0;u.scroll=u.scrollTo=function(){void 0!==arguments[0]&&(!0!==l(arguments[0])?a.call(u,m.body,void 0!==arguments[0].left?~~arguments[0].left:u.scrollX||u.pageXOffset,void 0!==arguments[0].top?~~arguments[0].top:u.scrollY||u.pageYOffset):w.scroll.call(u,void 0!==arguments[0].left?arguments[0].left:"object"!=typeof arguments[0]?arguments[0]:u.scrollX||u.pageXOffset,void 0!==arguments[0].top?arguments[0].top:void 0!==arguments[1]?arguments[1]:u.scrollY||u.pageYOffset))},u.scrollBy=function(){void 0!==arguments[0]&&(l(arguments[0])?w.scrollBy.call(u,void 0!==arguments[0].left?arguments[0].left:"object"!=typeof arguments[0]?arguments[0]:0,void 0!==arguments[0].top?arguments[0].top:void 0!==arguments[1]?arguments[1]:0):a.call(u,m.body,~~arguments[0].left+(u.scrollX||u.pageXOffset),~~arguments[0].top+(u.scrollY||u.pageYOffset)))},v.prototype.scroll=v.prototype.scrollTo=function(){if(void 0!==arguments[0])if(!0!==l(arguments[0])){var o=arguments[0].left,t=arguments[0].top;a.call(this,this,void 0===o?this.scrollLeft:~~o,void 0===t?this.scrollTop:~~t)}else{if("number"==typeof arguments[0]&&void 0===arguments[1])throw new SyntaxError("Value could not be converted");w.elementScroll.call(this,void 0!==arguments[0].left?~~arguments[0].left:"object"!=typeof arguments[0]?~~arguments[0]:this.scrollLeft,void 0!==arguments[0].top?~~arguments[0].top:void 0!==arguments[1]?~~arguments[1]:this.scrollTop)}},v.prototype.scrollBy=function(){void 0!==arguments[0]&&(!0!==l(arguments[0])?this.scroll({left:~~arguments[0].left+this.scrollLeft,top:~~arguments[0].top+this.scrollTop,behavior:arguments[0].behavior}):w.elementScroll.call(this,void 0!==arguments[0].left?~~arguments[0].left+this.scrollLeft:~~arguments[0]+this.scrollLeft,void 0!==arguments[0].top?~~arguments[0].top+this.scrollTop:~~arguments[1]+this.scrollTop))},v.prototype.scrollIntoView=function(){if(!0!==l(arg
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