https://ansari.sh/js/theme.min.js

1class Util{forEach(e,t){e=e||[];for(let n=0;n<e.length;n++)t(e[n])}getScrollTop(){return document.documentElement&&document.documentElement.scrollTop||document.body.scrollTop}isMobile(){return window.matchMedia("only screen and (max-width: 680px)").matches}isTocStatic(){return window.matchMedia("only screen and (max-width: 1200px)").matches}animateCSS(e,t,n,s){Array.isArray(t)||(t=[t]),e.classList.add("animated",...t);const o=()=>{e.classList.remove("animated",...t),e.removeEventListener("animationend",o),typeof s=="function"&&s()};n||e.addEventListener("animationend",o,!1)}}class Theme{constructor(){this.config=window.config,this.data=this.config.data,this.isDark=document.body.getAttribute("theme")==="dark",this.util=new Util,this.newScrollTop=this.util.getScrollTop(),this.oldScrollTop=this.newScrollTop,this.scrollEventSet=new Set,this.resizeEventSet=new Set,this.switchThemeEventSet=new Set,this.clickMaskEventSet=new Set,window.objectFitImages&&objectFitImages()}initSVGIcon(){this.util.forEach(document.querySelectorAll("[data-svg-src]"),e=>{fetch(e.getAttribute("data-svg-src")).then(e=>e.text()).then(t=>{const s=document.createElement("div");s.insertAdjacentHTML("afterbegin",t);const n=s.firstChild;n.setAttribute("data-svg-src",e.getAttribute("data-svg-src")),n.classList.add("icon");const o=n.getElementsByTagName("title");o.length&&n.removeChild(o[0]),e.parentElement.replaceChild(n,e)}).catch(e=>{console.error(e)})})}initTwemoji(){this.config.twemoji&&twemoji.parse(document.body)}initMenuMobile(){const e=document.getElementById("menu-toggle-mobile"),t=document.getElementById("menu-mobile");e.addEventListener("click",()=>{document.body.classList.toggle("blur"),e.classList.toggle("active"),t.classList.toggle("active")},!1),this._menuMobileOnClickMask=this._menuMobileOnClickMask||(()=>{e.classList.remove("active"),t.classList.remove("active")}),this.clickMaskEventSet.add(this._menuMobileOnClickMask)}initSwitchTheme(){this.util.forEach(document.getElementsByClassName("theme-switch"),e=>{e.addEventListener("click",()=>{document.body.getAttribute("theme")==="dark"?document.body.setAttribute("theme","light"):document.body.setAttribute("theme","dark"),this.isDark=!this.isDark,window.localStorage&&localStorage.setItem("theme",this.isDark?"dark":"light");for(let e of this.switchThemeEventSet)e()},!1)})}initSearch(){const e=this.config.search,o=this.util.isMobile();if(!e||o&&this._searchMobileOnce||!o&&this._searchDesktopOnce)return;const l=e.maxResultLength?e.maxResultLength:10,r=e.snippetLength?e.snippetLength:50,s=e.highlightTag?e.highlightTag:"em",n=o?"mobile":"desktop",i=document.getElementById(`header-${n}`),c=document.getElementById(`search-input-${n}`),u=document.getElementById(`search-toggle-${n}`),a=document.getElementById(`search-loading-${n}`),t=document.getElementById(`search-clear-${n}`);o?(this._searchMobileOnce=!0,c.addEventListener("focus",()=>{document.body.classList.add("blur"),i.classList.add("open")},!1),document.getElementById("search-cancel-mobile").addEventListener("click",()=>{i.classList.remove("open"),document.body.classList.remove("blur"),document.getElementById("menu-toggle-mobile").classList.remove("active"),document.getElementById("menu-mobile").classList.remove("active"),a.style.display="none",t.style.display="none",this._searchMobile&&this._searchMobile.autocomplete.setVal("")},!1),t.addEventListener("click",()=>{t.style.display="none",this._searchMobile&&this._searchMobile.autocomplete.setVal("")},!1),this._searchMobileOnClickMask=this._searchMobileOnClickMask||(()=>{i.classList.remove("open"),a.style.display="none",t.style.display="none",this._searchMobile&&this._searchMobile.autocomplete.setVal("")}),this.clickMaskEventSet.add(this._searchMobileOnClickMask)):(this._searchDesktopOnce=!0,u.addEventListener("click",()=>{document.body.classList.add("blur"),i.classList.add("open"),c.focus()},!1),t.addEventListener("click",()=>{t.style.display="none",this._searchDesktop&&this._searchDesktop.autocomplete.setVal("")},!1),this._searchDesktopOnClickMask=this._searchDesktopOnClickMask||(()=>{i.classList.remove("open"),a.style.display="none",t.style.display="none",this._searchDesktop&&this._searchDesktop.autocomplete.setVal("")}),this.clickMaskEventSet.add(this._searchDesktopOnClickMask)),c.addEventListener("input",()=>{c.value===""?t.style.display="none":t.style.display="inline"},!1);const d=()=>{const i=autocomplete(`#search-input-${n}`,{hint:!1,autoselect:!0,dropdownMenuContainer:`#search-dropdown-${n}

1`,clearOnSelected:!0,cssClasses:{noPrefix:!0},debug:!0},{name:"search",source:(n,o)=>{a.style.display="inline",t.style.display="none";const i=e=>{a.style.display="none",t.style.display="inline",o(e)};if(e.type==="lunr"){const t=()=>{lunr.queryHandler&&(n=lunr.queryHandler(n));const e={};return this._index.search(n).forEach(({ref:t,matchData:{metadata:n}})=>{const l=this._indexData[t];let{uri:a,title:c,content:o}=l;if(e[a])return;let i=0;Object.values(n).forEach(({content:e})=>{if(e){const t=e.position[0][0];(t<i||i===0)&&(i=t)}}),i-=r/5,i>0?(i+=o.substr(i,20).lastIndexOf(" ")+1,o="..."+o.substr(i,r)):o=o.substr(0,r),Object.keys(n).forEach(e=>{c=c.replace(new RegExp(`(${e})`,"gi"),`<${s}>$1</${s}>`),o=o.replace(new RegExp(`(${e})`,"gi"),`<${s}>$1</${s}>`)}),e[a]={uri:a,title:c,date:l.date,context:o}}),Object.values(e).slice(0,l)};this._index?i(t()):fetch(e.lunrIndexURL).then(e=>e.json()).then(n=>{const s={};this._index=lunr(function(){e.lunrLanguageCode&&this.use(lunr[e.lunrLanguageCode]),this.ref("objectID"),this.field("title",{boost:50}),this.field("tags",{boost:20}),this.field("categories",{boost:20}),this.field("content",{boost:10}),this.metadataWhitelist=["position"],n.forEach(e=>{s[e.objectID]=e,this.add(e)})}),this._indexData=s,i(t())}).catch(e=>{console.error(e),i([])})}else e.type==="algolia"&&(this._algoliaIndex=this._algoliaIndex||algoliasearch(e.algoliaAppID,e.algoliaSearchKey).initIndex(e.algoliaIndex),this._algoliaIndex.search(n,{offset:0,length:l*8,attributesToHighlight:["title"],attributesToSnippet:[`content:${r}`],highlightPreTag:`<${s}>`,highlightPostTag:`</${s}>`}).then(({hits:e})=>{const t={};e.forEach(({uri:e,date:n,_highlightResult:{title:s},_snippetResult:{content:o}})=>{if(t[e]&&t[e].context.length>o.value)return;t[e]={uri:e,title:s.value,date:n,context:o.value}}),i(Object.values(t).slice(0,l))}).catch(e=>{console.error(e),i([])}))},templates:{suggestion:({title:e,date:t,context:n})=>`<div><span class="suggestion-title">${e}</span><span class="suggestion-date">${t}</span></div><div class="suggestion-context">${n}</div>`,empty:({query:t})=>`<div class="search-empty">${e.noResultsFound}: <span class="search-query">"${t}"</span></div>`,footer:({})=>{const{searchType:t,icon:n,href:s}=e.type==="algolia"?{searchType:"algolia",icon:'<i class="fab fa-algolia fa-fw"></i>',href:"https://www.algolia.com/"}:{searchType:"Lunr.js",icon:"",href:"https://lunrjs.com/"};return`<div class="search-footer">Search by <a href="${s}" rel="noopener noreffer" target="_blank">${n} ${t}</a></div>`}}});i.on("autocomplete:selected",(e,t)=>{window.location.assign(t.uri)}),o?this._searchMobile=i:this._searchDesktop=i};if(e.lunrSegmentitURL&&!document.getElementById("lunr-segmentit")){const t=document.createElement("script");t.id="lunr-segmentit",t.src=e.lunrSegmentitURL,t.async=!0,t.readyState?t.onreadystatechange=()=>{(t.readyState=="loaded"||t.readyState=="complete")&&(t.onreadystatechange=null,d())}:t.onload=()=>{d()},document.body.appendChild(t)}else d()}initDetails(){this.util.forEach(document.getElementsByClassName("details"),e=>{const t=e.getElementsByClassName("details-summary")[0];t.addEventListener("click",()=>{e.classList.toggle("open")},!1)})}initLightGallery(){this.config.lightGallery&&lightGallery(document.getElementById("content"),this.config.lightGallery)}initHighlight(){this.util.forEach(document.querySelectorAll(".highlight > pre.chroma"),e=>{const t=document.createElement("div");t.className=e.className;const n=document.createElement("table");t.appendChild(n);const s=document.createElement("tbody");n.appendChild(s);const o=document.createElement("tr");s.appendChild(o);const i=document.createElement("td");o.appendChild(i),e.parentElement.replaceChild(t,e),i.appendChild(e)}),this.util.forEach(document.querySelectorAll(".highlight > .chroma"),e=>{const t=e.querySelectorAll("pre.chroma > code");if(t.length){const a=t[t.length-1],s=document.createElement("div");s.className="code-header "+a.className.toLowerCase();const o=document.createElement("span");o.classList.add("code-title"),o.insertAdjacentHTML("afterbegin",'<i class="arrow fas fa-chevron-right fa-fw"></i>'),o.addEventListener("click",()=>{e.classList.toggle("open")},!1),s.appendChild(o);const i=document.createElement("span");i.insertAdjacentHTML("afterbegin",'<i class="fas fa-ellipsis-h fa-fw"></i>'),i.classList.add("ellipses"),i.addEventListener("click",()=>{e.classList.add("open")},!1),s.appendChild(i);const n=document.createElement("span");n.insertAdjacentHTML("afterbegin",'<i class="far fa-copy fa-fw"></i>'),n.classList.add("copy");const r=a.innerText;if((this.config.code.maxShownLines<0||r.split(`
2`).length<this.config.code.maxShownLines+2)&&e.classList.add("open"),this.config.code.copyTitle){n.setAttribute("data-clipboard-text",r),n.title=this.config.code.copyTitle;const e=new ClipboardJS(n);e.on("success",e=>{this.util.animateCSS(a,"flash")}),s.appendChild(n)}e.insertBefore(s,e.firstChild)}})}initTable(){this.util.forEach(document.querySelectorAll(".content table"),e=>{const t=document.createElement("div");t.className="table-wrapper",e.parentElement.replaceChild(t,e),t.appendChild(e)})}initHeaderLink(){for(let e=1;e<=6;e++)this.util.forEach(document.querySelectorAll(".single .content > h"+e),e=>{e.classList.add("headerLink"),e.insertAdjacentHTML("afterbegin",`<a href="#${e.id}" class="header-mark"></a>`)})}initToc(){const e=document.getElementById("TableOfContents");if(e===null)return;if(document.getElementById("toc-static").getAttribute("data-kept")||this.util.isTocStatic()){const t=document.getElementById("toc-content-static");e.parentElement!==t&&(e.parentElement.removeChild(e),t.appendChild(e)),this._tocOnScroll&&this.scrollEventSet.delete(this._tocOnScroll)}else{const r=document.getElementById("toc-content-auto");e.parentElement!==r&&(e.parentElement.removeChild(e),r.appendChild(e));const t=document.getElementById("toc-auto"),c=document.getElementsByClassName("page")[0],l=c.getBoundingClientRect();t.style.left=`${l.left+l.width+10}px`,t.style.maxWidth=`${c.getBoundingClientRect().left-10}px`,t.style.visibility="visible";const i=e.querySelectorAll("a:first-child"),u=e.getElementsByTagName("li"),n=document.getElementsByClassName("headerLink"),s=document.body.getAttribute("data-header-desktop")!=="normal",o=document.getElementById("header-desktop").offsetHeight,a=20+(s?o:0),d=t.offsetTop,h=d-a+(s?0:o);this._tocOnScroll=this._tocOnScroll||(()=>

2{const m=document.getElementById("post-footer").offsetTop,l=m-t.getBoundingClientRect().height,f=l-a+(s?0:o);this.newScrollTop<h?(t.style.position="absolute",t.style.top=`${d}px`):this.newScrollTop>f?(t.style.position="absolute",t.style.top=`${l}px`):(t.style.position="fixed",t.style.top=`${a}px`),this.util.forEach(i,e=>{e.classList.remove("active")}),this.util.forEach(u,e=>{e.classList.remove("has-active")});const c=20+(s?o:0);let r=n.length-1;for(let e=0;e<n.length-1;e++){const t=n[e].getBoundingClientRect().top,s=n[e+1].getBoundingClientRect().top;if(e==0&&t>c||t<=c&&s>c){r=e;break}}if(r!==-1){i[r].classList.add("active");let t=i[r].parentElement;for(;t!==e;)t.classList.add("has-active"),t=t.parentElement.parentElement}}),this._tocOnScroll(),this.scrollEventSet.add(this._tocOnScroll)}}initMath(){this.config.math&&renderMathInElement(document.body,this.config.math)}initMermaid(){const e=document.getElementsByClassName("mermaid");e.length&&(mermaid.initialize({startOnLoad:!1,theme:"default"}),this.util.forEach(e,e=>{mermaid.mermaidAPI.render("svg-"+e.id,this.data[e.id],t=>{e.insertAdjacentHTML("afterbegin",t)},e)}))}initEcharts(){this._echartsOnSwitchTheme=this._echartsOnSwitchTheme||(()=>{this._echartsArr=this._echartsArr||[];for(let e=0;e<this._echartsArr.length;e++)this._echartsArr[e].dispose();this._echartsArr=[],this.util.forEach(document.getElementsByClassName("echarts"),e=>{const t=echarts.init(e,this.isDark?"dark":"macarons",{renderer:"svg"});t.setOption(JSON.parse(this.data[e.id])),this._echartsArr.push(t)})}),this.switchThemeEventSet.add(this._echartsOnSwitchTheme),this._echartsOnSwitchTheme(),this._echartsOnResize=this._echartsOnResize||(()=>{for(let e=0;e<this._echartsArr.length;e++)this._echartsArr[e].resize()}),this.resizeEventSet.add(this._echartsOnResize)}initMapbox(){this.config.mapbox&&(mapboxgl.accessToken=this.config.mapbox.accessToken,mapboxgl.setRTLTextPlugin(this.config.mapbox.RTLTextPlugin),this._mapboxArr=this._mapboxArr||[],this.util.forEach(document.getElementsByClassName("mapbox"),e=>{const{lng:n,lat:s,zoom:o,lightStyle:i,darkStyle:a,marked:r,navigation:c,geolocate:l,scale:d,fullscreen:u}=this.data[e.id],t=new mapboxgl.Map({container:e,center:[n,s],zoom:o,minZoom:.2,style:this.isDark?a:i,attributionControl:!1});r&&(new mapboxgl.Marker).setLngLat([n,s]).addTo(t),c&&t.addControl(new mapboxgl.NavigationControl,"bottom-right"),l&&t.addControl(new mapboxgl.GeolocateControl({positionOptions:{enableHighAccuracy:!0},showUserLocation:!0,trackUserLocation:!0}),"bottom-right"),d&&t.addControl(new mapboxgl.ScaleControl),u&&t.addControl(new mapboxgl.FullscreenControl),t.addControl(new MapboxLanguage),this._mapboxArr.push(t)}),this._mapboxOnSwitchTheme=this._mapboxOnSwitchTheme||(()=>{this.util.forEach(this._mapboxArr,e=>{const t=e.getContainer(),{lightStyle:n,darkStyle:s}=this.data[t.id];e.setStyle(this.isDark?s:n),e.addControl(new MapboxLanguage)})}),this.switchThemeEventSet.add(this._mapboxOnSwitchTheme))}initTypeit(){if(this.config.typeit){const e=this.config.typeit,t=e.speed?e.speed:100,n=e.cursorSpeed?e.cursorSpeed:1e3,s=e.cursorChar?e.cursorChar:"|";Object.values(e.data).forEach(o=>{const i=a=>{const r=o[a],c=new TypeIt(`#${r}`,{strings:this.data[r],speed:t,lifeLike:!0,cursorSpeed:n,cursorChar:s,waitUntilVisible:!0,afterComplete:()=>{if(a===o.length-1){e.duration>=0&&window.setTimeout(()=>{c.destroy()},e.duration);return}c.destroy(),i(a+1)}}).go()};i(0)})}}initComment(){if(this.config.comment){if(this.config.comment.gitalk){this.config.comment.gitalk.body=decodeURI(window.location.href);const e=new Gitalk(this.config.comment.gitalk);e.render("gitalk")}if(this.config.comment.vssue){const e=this.config.comment.vssue;new Vue({el:"#vssue",render:t=>t("Vssue",{props:{title:e.title,options:{owner:e.owner,repo:e.repo,clientId:e.clientID,clientSecret:e.clientSecret}}})})}if(this.config.comment.valine&&new Valine(this.config.comment.valine),this.config.comment.utterances){const e=this.config.comment.utterances,t=document.createElement("script");t.src="https://utteranc.es/client.js",t.setAttribute("repo",e.repo),t.setAttribute("issue-term",e.issueTerm),e.label&&t.setAttribute("label",e.label),t.setAttribute("theme",this.isDark?e.darkTheme:e.lightTheme),t.crossOrigin="anonymous",t.async=!0,document.getElementById("utterances").appendChild(t),this._utterancesOnSwitchTheme=this._utterancesOnSwitchTheme||(()=>{const t={type:"set-theme",theme:this.isDark?e.darkTheme:e.lightTheme},n=document.querySelector(".utterances-frame");n.contentWindow.postMessage(t,"https://utteranc.es")}),this.switchThemeEventSet.add(this._utterancesOnSwitchTheme)}}}initCookieconsent(){this.config.cookieconsent&&cookieconsent.initialise(this.config.cookieconsent)}onScroll(){const n=[];if(document.body.getAttribute("data-header-desktop")==="auto"&&n.push(document.getElementById("header-desktop")),document.body.getAttribute("data-header-mobile")==="auto"&&n.push(document.getElementById("header-mobile")),document.getElementById("comments")){const e=document.getElementById("view-comments");e.href=`#comments`,e.style.display="block"}const e=document.getElementById("fixed-buttons"),t=20,s=100;window.addEventListener("scroll",()=>{this.newScrollTop=this.util.getScrollTop();const o=this.newScrollTop-this.oldScrollTop,i=this.util.isMobile();this.util.forEach(n,e=>{o>t?(e.classList.remove("fadeInDown"),this.util.animateCSS(e,["fadeOutUp","faster"],!0)):o<-t&&(e.classList.remove("fadeOutUp"),this.util.animateCSS(e,["fadeInDown","faster"],!0))}),this.newScrollTop>s?i&&o>t?(e.classList.remove("fadeIn"),this.util.animateCSS(e,["fadeOut","faster"],!0)):(!i||o<-t)&&(e.style.display="block",e.classList.remove("fadeOut"),this.util.animateCSS(e,["fadeIn","faster"],!0)):(i||(e.classList.remove("fadeIn"),this.util.animateCSS(e,["fadeOut","faster"],!0)),e.style.display="none");for(let e of this.scrollEventSet)e();this.oldScrollTop=this.newScrollTop},!1)}onResize(){window.addEventListener("resize",()=>{this._resizeTimeout||(this._resizeTimeout=window.setTimeout(()=>{this._resizeTimeout=null;for(let e of this.resizeEventSet)e();this.initToc(),this.initMermaid(),this.initSearch()},100))},!1)}onClickMask(){document.getElementById("mask").addEventListener("click",()=>{for(let e of this.clickMaskEventSet)e();document.body.classList.remove("blur")},!1)}init(){try{this.initSVGIcon(),this.initTwemoji(),this.initMenuMobile(),this.initSwitchTheme(),this.initSearch(),this.initDetails(),this.initLightGallery(),this.initHighlight(),this.initTable(),this.initHeaderLink(),this.initMath(),this.initMermaid(),this.initEcharts(),this.initTypeit(),this.initMapbox(),this.initCookieconsent()}catch(e){console.error(e)}window.setTimeout(()=>{this.initToc(),this.initComment(),this.onScroll(),this.onResize(),this.onClickMask()},100)}}const themeInit=()=>{const e=new Theme;

2e.init()};document.readyState!=="loading"?themeInit():document.addEventListener("DOMContentLoaded",themeInit,!1)