zenscroll-min.js

!function(a,b){"function"==typeof define&&define.amd?define([],b()):"object"==typeof module&&module.exports?module.exports=b():function c(){document&&document.body?a.zenscroll=b():setTimeout(c,9)}()}(this,function(){"use strict";var a=function(a){return"getComputedStyle"in window&&"smooth"===window.getComputedStyle(a)["scroll-behavior"]};if("undefined"==typeof window||!("document"in window))return{};var b=function(b,c,d){c=c||999,d||0===d||(d=9);var e,f=function(a){e=a},g=function(){clearTimeout(e),f(0)},h=function(a){return Math.max(0,b.getTopOf(a)-d)},i=function(d,e,h){if(g(),0===e||e&&e<0||a(b.body))b.toY(d),h&&h();else{var i=b.getY(),j=Math.max(0,d)-i,k=(new Date).getTime();e=e||Math.min(Math.abs(j),c),function a(){f(setTimeout(function(){var c=Math.min(1,((new Date).getTime()-k)/e),d=Math.max(0,Math.floor(i+j*(c<.5?2*c*c:c*(4-2*c)-1)));b.toY(d),c<1&&b.getHeight()+d<b.body.scrollHeight?a():(setTimeout(g,99),h&&h())},9))}()}},j=function(d,e,h){if(g(),0===e||e&&e<0||a(b.body))b.toY(targetY),h&&h();else{var i=b.getX(),j=Math.max(0,d)-i,k=(new Date).getTime();e=e||Math.min(Math.abs(j),c),function a(){f(setTimeout(function(){var c=Math.min(1,((new Date).getTime()-k)/e),d=Math.max(0,Math.floor(i+j*(c<.5?2*c*c:c*(4-2*c)-1)));b.toX(d),c<1&&b.getWidth()+d<b.body.scrollWidth?a():(setTimeout(g,99),h&&h())},9))}()}},k=function(a,b,c){i(h(a),b,c)},l=function(a,c,e){var f=a.getBoundingClientRect().height,g=b.getTopOf(a)+f,j=b.getHeight(),l=b.getY(),m=l+j;h(a)<l||f+d>j?k(a,c,e):g+d>m?i(g-j+d,c,e):e&&e()},m=function(a,c,d,e){i(Math.max(0,b.getTopOf(a)-b.getHeight()/2+(d||a.getBoundingClientRect().height/2)),c,e)};return{setup:function(a,b){return(0===a||a)&&(c=a),(0===b||b)&&(d=b),{defaultDuration:c,edgeOffset:d}},to:k,toY:i,toX:j,intoView:l,center:m,stop:g,moving:function(){return!!e},getY:b.getY,getX:b.getX,getTopOf:b.getTopOf}},c=document.documentElement,d=function(){return window.scrollY||c.scrollTop},e=b({body:document.scrollingElement||document.body,toY:function(a){window.scrollTo(0,a)},toX:function(a){console.log("MOOO!")},getY:d,getHeight:function(){return window.innerHeight||c.clientHeight},getTopOf:function(a){return a.getBoundingClientRect().top+d()-c.offsetTop}});if(e.createScroller=function(a,d,e){return b({body:a,toY:function(b){a.scrollTop=b},toX:function(b){a.scrollLeft=b},getY:function(){return a.scrollTop},getX:function(){return a.scrollLeft},getHeight:function(){return Math.min(a.clientHeight,window.innerHeight||c.clientHeight)},getWidth:function(){return Math.min(a.clientWidth,window.innerWidth||c.clientWidth)},getTopOf:function(a){return a.offsetTop}},d,e)},"addEventListener"in window&&!window.noZensmooth&&!a(document.body)){var f="scrollRestoration"in history;f&&(history.scrollRestoration="auto"),window.addEventListener("load",function(){f&&(setTimeout(function(){history.scrollRestoration="manual"},9),window.addEventListener("popstate",function(a){a.state&&"zenscrollY"in a.state&&e.toY(a.state.zenscrollY)},!1)),window.location.hash&&setTimeout(function(){var a=e.setup().edgeOffset;if(a){var b=document.getElementById(window.location.href.split("#")[1]);if(b){var c=Math.max(0,e.getTopOf(b)-a),d=e.getY()-c;0<=d&&d<9&&window.scrollTo(0,c)}}},9)},!1);var g=new RegExp("(^|\\s)noZensmooth(\\s|$)");window.addEventListener("click",function(a){for(var b=a.target;b&&"A"!==b.tagName;)b=b.parentNode;if(!(!b||1!==a.which||a.shiftKey||a.metaKey||a.ctrlKey||a.altKey)){if(f)try{history.replaceState({zenscrollY:e.getY()},"")}catch(a){}var c=b.getAttribute("href")||"";if(0===c.indexOf("#")&&!g.test(b.className)){var d=0,h=document.getElementById(c.substring(1));if("#"!==c){if(!h)return;d=e.getTopOf(h)}a.preventDefault();var i=function(){window.location=c},j=e.setup().edgeOffset;j&&(d=Math.max(0,d-j),i=function(){history.pushState(null,"",c)}),e.toY(d,null,i)}}},!1)}return e});