From 6b8c64ffa8fddd9ed4bcd92bcfd37b67ba410244 Mon Sep 17 00:00:00 2001 From: Hakim El Hattab Date: Thu, 11 Apr 2024 08:45:27 +0200 Subject: [PATCH] 5.1.0 --- dist/reveal.css | 2 +- dist/reveal.esm.js | 4 ++-- dist/reveal.esm.js.map | 2 +- dist/reveal.js | 4 ++-- dist/reveal.js.map | 2 +- js/reveal.js | 2 +- package.json | 2 +- plugin/math/math.esm.js | 2 +- plugin/math/math.js | 2 +- 9 files changed, 11 insertions(+), 11 deletions(-) diff --git a/dist/reveal.css b/dist/reveal.css index c5813af4c63..869289eed20 100644 --- a/dist/reveal.css +++ b/dist/reveal.css @@ -1,5 +1,5 @@ /*! -* reveal.js 5.0.5 +* reveal.js 5.1.0 * https://revealjs.com * MIT licensed * diff --git a/dist/reveal.esm.js b/dist/reveal.esm.js index 773838ec53f..60411ac1231 100644 --- a/dist/reveal.esm.js +++ b/dist/reveal.esm.js @@ -1,9 +1,9 @@ /*! -* reveal.js 5.0.5 +* reveal.js 5.1.0 * https://revealjs.com * MIT licensed * * Copyright (C) 2011-2024 Hakim El Hattab, https://hakim.se */ -const e=(e,t)=>{for(let i in 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i=this.Reveal.getConfig(),s=this.Reveal.getCurrentSlide(),a=this.Reveal.getIndices(),n=null,r=i.rtl?"future":"past",o=i.rtl?"past":"future";if(Array.from(this.element.childNodes).forEach(((i,s)=>{i.classList.remove("past","present","future"),sa.h?i.classList.add(o):(i.classList.add("present"),n=i),(e||s===a.h)&&t(i,".slide-background").forEach(((e,t)=>{e.classList.remove("past","present","future");const i="number"==typeof a.v?a.v:0;ti?e.classList.add("future"):(e.classList.add("present"),s===a.h&&(n=e))}))})),this.previousBackground&&!this.previousBackground.closest("body")&&(this.previousBackground=null),n&&this.previousBackground){let e=this.previousBackground.getAttribute("data-background-hash"),t=n.getAttribute("data-background-hash");if(t&&t===e&&n!==this.previousBackground){this.element.classList.add("no-transition");const e=n.querySelector("video"),t=this.previousBackground.querySelector("video");if(e&&t){const i=e.parentNode;t.parentNode.appendChild(e),i.appendChild(t)}}}if(this.previousBackground&&this.Reveal.slideContent.stopEmbeddedContent(this.previousBackground,{unloadIframes:!this.Reveal.slideContent.shouldPreload(this.previousBackground)}),n){this.Reveal.slideContent.startEmbeddedContent(n);let e=n.querySelector(".slide-background-content");if(e){let t=e.style.backgroundImage||"";/\.gif/i.test(t)&&(e.style.backgroundImage="",window.getComputedStyle(e).opacity,e.style.backgroundImage=t)}this.previousBackground=n}s&&this.bubbleSlideContrastClassToElement(s,this.Reveal.getRevealElement()),setTimeout((()=>{this.element.classList.remove("no-transition")}),10)}updateParallax(){let e=this.Reveal.getIndices();if(this.Reveal.getConfig().parallaxBackgroundImage){let t,i,s=this.Reveal.getHorizontalSlides(),a=this.Reveal.getVerticalSlides(),n=this.element.style.backgroundSize.split(" ");1===n.length?t=i=parseInt(n[0],10):(t=parseInt(n[0],10),i=parseInt(n[1],10));let r,o,l=this.element.offsetWidth,d=s.length;r="number"==typeof this.Reveal.getConfig().parallaxBackgroundHorizontal?this.Reveal.getConfig().parallaxBackgroundHorizontal:d>1?(t-l)/(d-1):0,o=r*e.h*-1;let c,h,u=this.element.offsetHeight,g=a.length;c="number"==typeof this.Reveal.getConfig().parallaxBackgroundVertical?this.Reveal.getConfig().parallaxBackgroundVertical:(i-u)/(g-1),h=g>0?c*e.v:0,this.element.style.backgroundPosition=o+"px "+-h+"px"}}destroy(){this.element.remove()}}let k=0;class L{constructor(e){this.Reveal=e}run(e,t){this.reset();let i=this.Reveal.getSlides(),s=i.indexOf(t),a=i.indexOf(e);if(e&&t&&e.hasAttribute("data-auto-animate")&&t.hasAttribute("data-auto-animate")&&e.getAttribute("data-auto-animate-id")===t.getAttribute("data-auto-animate-id")&&!(s>a?t:e).hasAttribute("data-auto-animate-restart")){this.autoAnimateStyleSheet=this.autoAnimateStyleSheet||l();let i=this.getAutoAnimateOptions(t);e.dataset.autoAnimate="pending",t.dataset.autoAnimate="pending",i.slideDirection=s>a?"forward":"backward";let n="none"===e.style.display;n&&(e.style.display=this.Reveal.getConfig().display);let r=this.getAutoAnimatableElements(e,t).map((e=>this.autoAnimateElements(e.from,e.to,e.options||{},i,k++)));if(n&&(e.style.display="none"),"false"!==t.dataset.autoAnimateUnmatched&&!0===this.Reveal.getConfig().autoAnimateUnmatched){let e=.8*i.duration,s=.2*i.duration;this.getUnmatchedAutoAnimateElements(t).forEach((e=>{let t=this.getAutoAnimateOptions(e,i),s="unmatched";t.duration===i.duration&&t.delay===i.delay||(s="unmatched-"+k++,r.push(`[data-auto-animate="running"] [data-auto-animate-target="${s}"] { transition: opacity ${t.duration}s ease ${t.delay}s; }`)),e.dataset.autoAnimateTarget=s}),this),r.push(`[data-auto-animate="running"] [data-auto-animate-target="unmatched"] { transition: opacity ${e}s ease ${s}s; }`)}this.autoAnimateStyleSheet.innerHTML=r.join(""),requestAnimationFrame((()=>{this.autoAnimateStyleSheet&&(getComputedStyle(this.autoAnimateStyleSheet).fontWeight,t.dataset.autoAnimate="running")})),this.Reveal.dispatchEvent({type:"autoanimate",data:{fromSlide:e,toSlide:t,sheet:this.autoAnimateStyleSheet}})}}reset(){t(this.Reveal.getRevealElement(),'[data-auto-animate]:not([data-auto-animate=""])').forEach((e=>{e.dataset.autoAnimate=""})),t(this.Reveal.getRevealElement(),"[data-auto-animate-target]").forEach((e=>{delete e.dataset.autoAnimateTarget})),this.autoAnimateStyleSheet&&this.autoAnimateStyleSheet.parentNode&&(this.autoAnimateStyleSheet.parentNode.removeChild(this.autoAnimateStyleSheet),this.autoAnimateStyleSheet=null)}autoAnimateElements(e,t,i,s,a){e.dataset.autoAnimateTarget="",t.dataset.autoAnimateTarget=a;let n=this.getAutoAnimateOptions(t,s);void 0!==i.delay&&(n.delay=i.delay),void 0!==i.duration&&(n.duration=i.duration),void 0!==i.easing&&(n.easing=i.easing);let r=this.getAutoAnimatableProperties("from",e,i),o=this.getAutoAnimatableProperties("to",t,i);if(t.classList.contains("fragment")&&(delete o.styles.opacity,e.classList.contains("fragment"))){(e.className.match(w)||[""])[0]===(t.className.match(w)||[""])[0]&&"forward"===s.slideDirection&&t.classList.add("visible","disabled")}if(!1!==i.translate||!1!==i.scale){let e=this.Reveal.getScale(),t={x:(r.x-o.x)/e,y:(r.y-o.y)/e,scaleX:r.width/o.width,scaleY:r.height/o.height};t.x=Math.round(1e3*t.x)/1e3,t.y=Math.round(1e3*t.y)/1e3,t.scaleX=Math.round(1e3*t.scaleX)/1e3,t.scaleX=Math.round(1e3*t.scaleX)/1e3;let s=!1!==i.translate&&(0!==t.x||0!==t.y),a=!1!==i.scale&&(0!==t.scaleX||0!==t.scaleY);if(s||a){let e=[];s&&e.push(`translate(${t.x}px, ${t.y}px)`),a&&e.push(`scale(${t.scaleX}, ${t.scaleY})`),r.styles.transform=e.join(" "),r.styles["transform-origin"]="top left",o.styles.transform="none"}}for(let e in o.styles){const t=o.styles[e],i=r.styles[e];t===i?delete o.styles[e]:(!0===t.explicitValue&&(o.styles[e]=t.value),!0===i.explicitValue&&(r.styles[e]=i.value))}let l="",d=Object.keys(o.styles);if(d.length>0){r.styles.transition="none",o.styles.transition=`all ${n.duration}s ${n.easing} ${n.delay}s`,o.styles["transition-property"]=d.join(", "),o.styles["will-change"]=d.join(", "),l='[data-auto-animate-target="'+a+'"] {'+Object.keys(r.styles).map((e=>e+": "+r.styles[e]+" !important;")).join("")+'}[data-auto-animate="running"] [data-auto-animate-target="'+a+'"] {'+Object.keys(o.styles).map((e=>e+": "+o.styles[e]+" !important;")).join("")+"}"}return l}getAutoAnimateOptions(t,i){let s={easing:this.Reveal.getConfig().autoAnimateEasing,duration:this.Reveal.getConfig().autoAnimateDuration,delay:0};if(s=e(s,i),t.parentNode){let e=r(t.parentNode,"[data-auto-animate-target]");e&&(s=this.getAutoAnimateOptions(e,s))}return t.dataset.autoAnimateEasing&&(s.easing=t.dataset.autoAnimateEasing),t.dataset.autoAnimateDuration&&(s.duration=parseFloat(t.dataset.autoAnimateDuration)),t.dataset.autoAnimateDelay&&(s.delay=parseFloat(t.dataset.autoAnimateDelay)),s}getAutoAnimatableProperties(e,t,i){let s=this.Reveal.getConfig(),a={styles:[]};if(!1!==i.translate||!1!==i.scale){let e;if("function"==typeof i.measure)e=i.measure(t);else if(s.center)e=t.getBoundingClientRect();else{let i=this.Reveal.getScale();e={x:t.offsetLeft*i,y:t.offsetTop*i,width:t.offsetWidth*i,height:t.offsetHeight*i}}a.x=e.x,a.y=e.y,a.width=e.width,a.height=e.height}const n=getComputedStyle(t);return(i.styles||s.autoAnimateStyles).forEach((t=>{let i;"string"==typeof t&&(t={property:t}),void 0!==t.from&&"from"===e?i={value:t.from,explicitValue:!0}:void 0!==t.to&&"to"===e?i={value:t.to,explicitValue:!0}:("line-height"===t.property&&(i=parseFloat(n["line-height"])/parseFloat(n["font-size"])),isNaN(i)&&(i=n[t.property])),""!==i&&(a.styles[t.property]=i)})),a}getAutoAnimatableElements(e,t){let i=("function"==typeof this.Reveal.getConfig().autoAnimateMatcher?this.Reveal.getConfig().autoAnimateMatcher:this.getAutoAnimatePairs).call(this,e,t),s=[];return i.filter(((e,t)=>{if(-1===s.indexOf(e.to))return s.push(e.to),!0}))}getAutoAnimatePairs(e,t){let i=[];const s="h1, h2, h3, h4, h5, h6, p, li";return this.findAutoAnimateMatches(i,e,t,"[data-id]",(e=>e.nodeName+":::"+e.getAttribute("data-id"))),this.findAutoAnimateMatches(i,e,t,s,(e=>e.nodeName+":::"+e.innerText)),this.findAutoAnimateMatches(i,e,t,"img, video, iframe",(e=>e.nodeName+":::"+(e.getAttribute("src")||e.getAttribute("data-src")))),this.findAutoAnimateMatches(i,e,t,"pre",(e=>e.nodeName+":::"+e.innerText)),i.forEach((e=>{n(e.from,s)?e.options={scale:!1}:n(e.from,"pre")&&(e.options={scale:!1,styles:["width","height"]},this.findAutoAnimateMatches(i,e.from,e.to,".hljs .hljs-ln-code",(e=>e.textContent),{scale:!1,styles:[],measure:this.getLocalBoundingBox.bind(this)}),this.findAutoAnimateMatches(i,e.from,e.to,".hljs .hljs-ln-numbers[data-line-number]",(e=>e.getAttribute("data-line-number")),{scale:!1,styles:["width"],measure:this.getLocalBoundingBox.bind(this)}))}),this),i}getLocalBoundingBox(e){const t=this.Reveal.getScale();return{x:Math.round(e.offsetLeft*t*100)/100,y:Math.round(e.offsetTop*t*100)/100,width:Math.round(e.offsetWidth*t*100)/100,height:Math.round(e.offsetHeight*t*100)/100}}findAutoAnimateMatches(e,t,i,s,a,n){let r={},o={};[].slice.call(t.querySelectorAll(s)).forEach(((e,t)=>{const i=a(e);"string"==typeof i&&i.length&&(r[i]=r[i]||[],r[i].push(e))})),[].slice.call(i.querySelectorAll(s)).forEach(((t,i)=>{const s=a(t);let l;if(o[s]=o[s]||[],o[s].push(t),r[s]){const e=o[s].length-1,t=r[s].length-1;r[s][e]?(l=r[s][e],r[s][e]=null):r[s][t]&&(l=r[s][t],r[s][t]=null)}l&&e.push({from:l,to:t,options:n})}))}getUnmatchedAutoAnimateElements(e){return[].slice.call(e.children).reduce(((e,t)=>{const i=t.querySelector("[data-auto-animate-target]");return t.hasAttribute("data-auto-animate-target")||i||e.push(t),t.querySelector("[data-auto-animate-target]")&&(e=e.concat(this.getUnmatchedAutoAnimateElements(t))),e}),[])}}class C{constructor(e){this.Reveal=e,this.active=!1,this.activatedCallbacks=[],this.onScroll=this.onScroll.bind(this)}activate(){if(this.active)return;const e=this.Reveal.getState();this.active=!0,this.slideHTMLBeforeActivation=this.Reveal.getSlidesElement().innerHTML;const i=t(this.Reveal.getRevealElement(),f),s=t(this.Reveal.getRevealElement(),".backgrounds>.slide-background");let a;this.viewportElement.classList.add("loading-scroll-mode","reveal-scroll");const n=window.getComputedStyle(this.viewportElement);n&&n.background&&(a=n.background);const r=[],o=i[0].parentNode;let l;const d=(e,t,i,n)=>{let o;if(l&&this.Reveal.shouldAutoAnimateBetween(l,e))o=document.createElement("div"),o.className="scroll-page-content scroll-auto-animate-page",o.style.display="none",l.closest(".scroll-page-content").parentNode.appendChild(o);else{const e=document.createElement("div");if(e.className="scroll-page",r.push(e),n&&s.length>t){const i=s[t],n=window.getComputedStyle(i);n&&n.background?e.style.background=n.background:a&&(e.style.background=a)}else a&&(e.style.background=a);const i=document.createElement("div");i.className="scroll-page-sticky",e.appendChild(i),o=document.createElement("div"),o.className="scroll-page-content",i.appendChild(o)}o.appendChild(e),e.classList.remove("past","future"),e.setAttribute("data-index-h",t),e.setAttribute("data-index-v",i),e.slideBackgroundElement&&(e.slideBackgroundElement.remove("past","future"),o.insertBefore(e.slideBackgroundElement,e)),l=e};i.forEach(((e,t)=>{this.Reveal.isVerticalStack(e)?e.querySelectorAll("section").forEach(((e,i)=>{d(e,t,i,!0)})):d(e,t,0)}),this),this.createProgressBar(),t(this.Reveal.getRevealElement(),".stack").forEach((e=>e.remove())),r.forEach((e=>o.appendChild(e))),this.Reveal.slideContent.layout(this.Reveal.getSlidesElement()),this.Reveal.layout(),this.Reveal.setState(e),this.activatedCallbacks.forEach((e=>e())),this.activatedCallbacks=[],this.restoreScrollPosition(),this.viewportElement.classList.remove("loading-scroll-mode"),this.viewportElement.addEventListener("scroll",this.onScroll,{passive:!0})}deactivate(){if(!this.active)return;const e=this.Reveal.getState();this.active=!1,this.viewportElement.removeEventListener("scroll",this.onScroll),this.viewportElement.classList.remove("reveal-scroll"),this.removeProgressBar(),this.Reveal.getSlidesElement().innerHTML=this.slideHTMLBeforeActivation,this.Reveal.sync(),this.Reveal.setState(e),this.slideHTMLBeforeActivation=null}toggle(e){"boolean"==typeof e?e?this.activate():this.deactivate():this.isActive()?this.deactivate():this.activate()}isActive(){return this.active}createProgressBar(){this.progressBar=document.createElement("div"),this.progressBar.className="scrollbar",this.progressBarInner=document.createElement("div"),this.progressBarInner.className="scrollbar-inner",this.progressBar.appendChild(this.progressBarInner),this.progressBarPlayhead=document.createElement("div"),this.progressBarPlayhead.className="scrollbar-playhead",this.progressBarInner.appendChild(this.progressBarPlayhead),this.viewportElement.insertBefore(this.progressBar,this.viewportElement.firstChild);const e=e=>{let t=(e.clientY-this.progressBarInner.getBoundingClientRect().top)/this.progressBarHeight;t=Math.max(Math.min(t,1),0),this.viewportElement.scrollTop=t*(this.viewportElement.scrollHeight-this.viewportElement.offsetHeight)},t=i=>{this.draggingProgressBar=!1,this.showProgressBar(),document.removeEventListener("mousemove",e),document.removeEventListener("mouseup",t)};this.progressBarInner.addEventListener("mousedown",(i=>{i.preventDefault(),this.draggingProgressBar=!0,document.addEventListener("mousemove",e),document.addEventListener("mouseup",t),e(i)}))}removeProgressBar(){this.progressBar&&(this.progressBar.remove(),this.progressBar=null)}layout(){this.isActive()&&(this.syncPages(),this.syncScrollPosition())}syncPages(){const e=this.Reveal.getConfig(),t=this.Reveal.getComputedSlideSize(window.innerWidth,window.innerHeight),i=this.Reveal.getScale(),s="compact"===e.scrollLayout,a=this.viewportElement.offsetHeight,n=t.height*i,r=s?n:a;this.scrollTriggerHeight=s?n:a,this.viewportElement.style.setProperty("--page-height",r+"px"),this.viewportElement.style.scrollSnapType="string"==typeof e.scrollSnap?`y ${e.scrollSnap}`:"",this.slideTriggers=[];const o=Array.from(this.Reveal.getRevealElement().querySelectorAll(".scroll-page"));this.pages=o.map((i=>{const n=this.createPage({pageElement:i,slideElement:i.querySelector("section"),stickyElement:i.querySelector(".scroll-page-sticky"),contentElement:i.querySelector(".scroll-page-content"),backgroundElement:i.querySelector(".slide-background"),autoAnimateElements:i.querySelectorAll(".scroll-auto-animate-page"),autoAnimatePages:[]});n.pageElement.style.setProperty("--slide-height",!0===e.center?"auto":t.height+"px"),this.slideTriggers.push({page:n,activate:()=>this.activatePage(n),deactivate:()=>this.deactivatePage(n)}),this.createFragmentTriggersForPage(n),n.autoAnimateElements.length>0&&this.createAutoAnimateTriggersForPage(n);let o=Math.max(n.scrollTriggers.length-1,0);o+=n.autoAnimatePages.reduce(((e,t)=>e+Math.max(t.scrollTriggers.length-1,0)),n.autoAnimatePages.length),n.pageElement.querySelectorAll(".scroll-snap-point").forEach((e=>e.remove()));for(let e=0;e0?(n.pageHeight=a,n.pageElement.style.setProperty("--page-height",a+"px")):(n.pageHeight=r,n.pageElement.style.removeProperty("--page-height")),n.scrollPadding=this.scrollTriggerHeight*o,n.totalHeight=n.pageHeight+n.scrollPadding,n.pageElement.style.setProperty("--page-scroll-padding",n.scrollPadding+"px"),o>0?(n.stickyElement.style.position="sticky",n.stickyElement.style.top=Math.max((a-n.pageHeight)/2,0)+"px"):(n.stickyElement.style.position="relative",n.pageElement.style.scrollSnapAlign=n.pageHeight1?(this.progressBar||this.createProgressBar(),this.syncProgressBar()):this.removeProgressBar()}setTriggerRanges(){this.totalScrollTriggerCount=this.slideTriggers.reduce(((e,t)=>e+Math.max(t.page.scrollTriggers.length,1)),0);let e=0;this.slideTriggers.forEach(((t,i)=>{t.range=[e,e+Math.max(t.page.scrollTriggers.length,1)/this.totalScrollTriggerCount];const s=(t.range[1]-t.range[0])/t.page.scrollTriggers.length;t.page.scrollTriggers.forEach(((t,i)=>{t.range=[e+i*s,e+(i+1)*s]})),e=t.range[1]}))}createFragmentTriggersForPage(e,t){t=t||e.slideElement;const i=this.Reveal.fragments.sort(t.querySelectorAll(".fragment"),!0);return i.length&&(e.fragments=this.Reveal.fragments.sort(t.querySelectorAll(".fragment:not(.disabled)")),e.scrollTriggers.push({activate:()=>{this.Reveal.fragments.update(-1,e.fragments,t)}}),i.forEach(((i,s)=>{e.scrollTriggers.push({activate:()=>{this.Reveal.fragments.update(s,e.fragments,t)}})}))),e.scrollTriggers.length}createAutoAnimateTriggersForPage(e){e.autoAnimateElements.length>0&&this.slideTriggers.push(...Array.from(e.autoAnimateElements).map(((t,i)=>{let s=this.createPage({slideElement:t.querySelector("section"),contentElement:t,backgroundElement:t.querySelector(".slide-background")});return this.createFragmentTriggersForPage(s,s.slideElement),e.autoAnimatePages.push(s),{page:s,activate:()=>this.activatePage(s),deactivate:()=>this.deactivatePage(s)}})))}createPage(e){return e.scrollTriggers=[],e.indexh=parseInt(e.slideElement.getAttribute("data-index-h"),10),e.indexv=parseInt(e.slideElement.getAttribute("data-index-v"),10),e}syncProgressBar(){this.progressBarInner.querySelectorAll(".scrollbar-slide").forEach((e=>e.remove()));const e=this.viewportElement.scrollHeight,t=this.viewportElement.offsetHeight,i=t/e;this.progressBarHeight=this.progressBarInner.offsetHeight,this.playheadHeight=Math.max(i*this.progressBarHeight,8),this.progressBarScrollableHeight=this.progressBarHeight-this.playheadHeight;const s=t/e*this.progressBarHeight,a=Math.min(s/8,4);this.progressBarPlayhead.style.height=this.playheadHeight-a+"px",s>6?this.slideTriggers.forEach((e=>{const{page:t}=e;t.progressBarSlide=document.createElement("div"),t.progressBarSlide.className="scrollbar-slide",t.progressBarSlide.style.top=e.range[0]*this.progressBarHeight+"px",t.progressBarSlide.style.height=(e.range[1]-e.range[0])*this.progressBarHeight-a+"px",t.progressBarSlide.classList.toggle("has-triggers",t.scrollTriggers.length>0),this.progressBarInner.appendChild(t.progressBarSlide),t.scrollTriggerElements=t.scrollTriggers.map(((i,s)=>{const n=document.createElement("div");return n.className="scrollbar-trigger",n.style.top=(i.range[0]-e.range[0])*this.progressBarHeight+"px",n.style.height=(i.range[1]-i.range[0])*this.progressBarHeight-a+"px",t.progressBarSlide.appendChild(n),0===s&&(n.style.display="none"),n}))})):this.pages.forEach((e=>e.progressBarSlide=null))}syncScrollPosition(){const e=this.viewportElement.offsetHeight,t=e/this.viewportElement.scrollHeight,i=this.viewportElement.scrollTop,s=this.viewportElement.scrollHeight-e,a=Math.max(Math.min(i/s,1),0),n=Math.max(Math.min((i+e/2)/this.viewportElement.scrollHeight,1),0);let r;this.slideTriggers.forEach((e=>{const{page:i}=e;a>=e.range[0]-2*t&&a<=e.range[1]+2*t&&!i.loaded?(i.loaded=!0,this.Reveal.slideContent.load(i.slideElement)):i.loaded&&(i.loaded=!1,this.Reveal.slideContent.unload(i.slideElement)),a>=e.range[0]&&a<=e.range[1]?(this.activateTrigger(e),r=e.page):e.active&&this.deactivateTrigger(e)})),r&&r.scrollTriggers.forEach((e=>{n>=e.range[0]&&n<=e.range[1]?this.activateTrigger(e):e.active&&this.deactivateTrigger(e)})),this.setProgressBarValue(i/(this.viewportElement.scrollHeight-e))}setProgressBarValue(e){this.progressBar&&(this.progressBarPlayhead.style.transform=`translateY(${e*this.progressBarScrollableHeight}px)`,this.getAllPages().filter((e=>e.progressBarSlide)).forEach((e=>{e.progressBarSlide.classList.toggle("active",!0===e.active),e.scrollTriggers.forEach(((t,i)=>{e.scrollTriggerElements[i].classList.toggle("active",!0===e.active&&!0===t.active)}))})),this.showProgressBar())}showProgressBar(){this.progressBar.classList.add("visible"),clearTimeout(this.hideProgressBarTimeout),"auto"!==this.Reveal.getConfig().scrollProgress||this.draggingProgressBar||(this.hideProgressBarTimeout=setTimeout((()=>{this.progressBar&&this.progressBar.classList.remove("visible")}),500))}prev(){this.viewportElement.scrollTop-=this.scrollTriggerHeight}next(){this.viewportElement.scrollTop+=this.scrollTriggerHeight}scrollToSlide(e){if(this.active){const t=this.getScrollTriggerBySlide(e);t&&(this.viewportElement.scrollTop=t.range[0]*(this.viewportElement.scrollHeight-this.viewportElement.offsetHeight))}else this.activatedCallbacks.push((()=>this.scrollToSlide(e)))}storeScrollPosition(){clearTimeout(this.storeScrollPositionTimeout),this.storeScrollPositionTimeout=setTimeout((()=>{sessionStorage.setItem("reveal-scroll-top",this.viewportElement.scrollTop),sessionStorage.setItem("reveal-scroll-origin",location.origin+location.pathname),this.storeScrollPositionTimeout=null}),50)}restoreScrollPosition(){const 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i=this.getAllPages().find((i=>i.indexh===e&&i.indexv===t));return i?i.slideElement:null}getScrollTriggerBySlide(e){return this.slideTriggers.find((t=>t.page.slideElement===e))}getAllPages(){return this.pages.flatMap((e=>[e,...e.autoAnimatePages||[]]))}onScroll(){this.syncScrollPosition(),this.storeScrollPosition()}get viewportElement(){return this.Reveal.getViewportElement()}}class x{constructor(e){this.Reveal=e}async activate(){const e=this.Reveal.getConfig(),i=t(this.Reveal.getRevealElement(),m),s=e.slideNumber&&/all|print/i.test(e.showSlideNumber),a=this.Reveal.getComputedSlideSize(window.innerWidth,window.innerHeight),n=Math.floor(a.width*(1+e.margin)),r=Math.floor(a.height*(1+e.margin)),o=a.width,d=a.height;await new Promise(requestAnimationFrame),l("@page{size:"+n+"px "+r+"px; margin: 0px;}"),l(".reveal section>img, .reveal section>video, .reveal section>iframe{max-width: "+o+"px; 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f=document.createElement("div");if(g.push(f),f.className="pdf-page",f.style.height=(r+e.pdfPageHeightOffset)*m+"px",h&&(f.style.background=h),f.appendChild(i),i.style.left=l+"px",i.style.top=c+"px",i.style.width=o+"px",this.Reveal.slideContent.layout(i),i.slideBackgroundElement&&f.insertBefore(i.slideBackgroundElement,i),e.showNotes){const t=this.Reveal.getSlideNotes(i);if(t){const i=8,s="string"==typeof e.showNotes?e.showNotes:"inline",a=document.createElement("div");a.classList.add("speaker-notes"),a.classList.add("speaker-notes-pdf"),a.setAttribute("data-layout",s),a.innerHTML=t,"separate-page"===s?g.push(a):(a.style.left=i+"px",a.style.bottom=i+"px",a.style.width=n-2*i+"px",f.appendChild(a))}}if(s){const e=document.createElement("div");e.classList.add("slide-number"),e.classList.add("slide-number-pdf"),e.innerHTML=v++,f.appendChild(e)}if(e.pdfSeparateFragments){const e=this.Reveal.fragments.sort(f.querySelectorAll(".fragment"),!0);let t;e.forEach((function(e,i){t&&t.forEach((function(e){e.classList.remove("current-fragment")})),e.forEach((function(e){e.classList.add("visible","current-fragment")}),this);const a=f.cloneNode(!0);if(s){const e=i+1;a.querySelector(".slide-number-pdf").innerHTML+="."+e}g.push(a),t=e}),this),e.forEach((function(e){e.forEach((function(e){e.classList.remove("visible","current-fragment")}))}))}else t(f,".fragment:not(.fade-out)").forEach((function(e){e.classList.add("visible")}))}}),this),await new Promise(requestAnimationFrame),g.forEach((e=>p.appendChild(e))),this.Reveal.slideContent.layout(this.Reveal.getSlidesElement()),this.Reveal.dispatchEvent({type:"pdf-ready"}),c.classList.remove("loading-scroll-mode")}isActive(){return"print"===this.Reveal.getConfig().view}}class 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a=t.classList.contains("visible");t.classList.add("visible"),t.classList.remove("current-fragment"),i===e&&(this.Reveal.announceStatus(this.Reveal.getStatusText(t)),t.classList.add("current-fragment"),this.Reveal.slideContent.startEmbeddedContent(t)),a||(s.shown.push(t),this.Reveal.dispatchEvent({target:t,type:"visible",bubbles:!1}))}else{let e=t.classList.contains("visible");t.classList.remove("visible"),t.classList.remove("current-fragment"),e&&(this.Reveal.slideContent.stopEmbeddedContent(t),s.hidden.push(t),this.Reveal.dispatchEvent({target:t,type:"hidden",bubbles:!1}))}})),e="number"==typeof e?e:-1,e=Math.max(Math.min(e,a),-1),i.setAttribute("data-fragment",e)}return s.hidden.length&&this.Reveal.dispatchEvent({type:"fragmenthidden",data:{fragment:s.hidden[0],fragments:s.hidden}}),s.shown.length&&this.Reveal.dispatchEvent({type:"fragmentshown",data:{fragment:s.shown[0],fragments:s.shown}}),s}sync(e=this.Reveal.getCurrentSlide()){return this.sort(e.querySelectorAll(".fragment"))}goto(e,t=0){let i=this.Reveal.getCurrentSlide();if(i&&this.Reveal.getConfig().fragments){let s=this.sort(i.querySelectorAll(".fragment:not(.disabled)"));if(s.length){if("number"!=typeof e){let t=this.sort(i.querySelectorAll(".fragment:not(.disabled).visible")).pop();e=t?parseInt(t.getAttribute("data-fragment-index")||0,10):-1}e+=t;let a=this.update(e,s);return this.Reveal.controls.update(),this.Reveal.progress.update(),this.Reveal.getConfig().fragmentInURL&&this.Reveal.location.writeURL(),!(!a.shown.length&&!a.hidden.length)}}return!1}next(){return this.goto(null,1)}prev(){return this.goto(null,-1)}}class T{constructor(e){this.Reveal=e,this.active=!1,this.onSlideClicked=this.onSlideClicked.bind(this)}activate(){if(this.Reveal.getConfig().overview&&!this.Reveal.isScrollView()&&!this.isActive()){this.active=!0,this.Reveal.getRevealElement().classList.add("overview"),this.Reveal.cancelAutoSlide(),this.Reveal.getSlidesElement().appendChild(this.Reveal.getBackgroundsElement()),t(this.Reveal.getRevealElement(),m).forEach((e=>{e.classList.contains("stack")||e.addEventListener("click",this.onSlideClicked,!0)}));const e=70,i=this.Reveal.getComputedSlideSize();this.overviewSlideWidth=i.width+e,this.overviewSlideHeight=i.height+e,this.Reveal.getConfig().rtl&&(this.overviewSlideWidth=-this.overviewSlideWidth),this.Reveal.updateSlidesVisibility(),this.layout(),this.update(),this.Reveal.layout();const s=this.Reveal.getIndices();this.Reveal.dispatchEvent({type:"overviewshown",data:{indexh:s.h,indexv:s.v,currentSlide:this.Reveal.getCurrentSlide()}})}}layout(){this.Reveal.getHorizontalSlides().forEach(((e,i)=>{e.setAttribute("data-index-h",i),a(e,"translate3d("+i*this.overviewSlideWidth+"px, 0, 0)"),e.classList.contains("stack")&&t(e,"section").forEach(((e,t)=>{e.setAttribute("data-index-h",i),e.setAttribute("data-index-v",t),a(e,"translate3d(0, "+t*this.overviewSlideHeight+"px, 0)")}))})),Array.from(this.Reveal.getBackgroundsElement().childNodes).forEach(((e,i)=>{a(e,"translate3d("+i*this.overviewSlideWidth+"px, 0, 0)"),t(e,".slide-background").forEach(((e,t)=>{a(e,"translate3d(0, "+t*this.overviewSlideHeight+"px, 0)")}))}))}update(){const e=Math.min(window.innerWidth,window.innerHeight),t=Math.max(e/5,150)/e,i=this.Reveal.getIndices();this.Reveal.transformSlides({overview:["scale("+t+")","translateX("+-i.h*this.overviewSlideWidth+"px)","translateY("+-i.v*this.overviewSlideHeight+"px)"].join(" ")})}deactivate(){if(this.Reveal.getConfig().overview){this.active=!1,this.Reveal.getRevealElement().classList.remove("overview"),this.Reveal.getRevealElement().classList.add("overview-deactivating"),setTimeout((()=>{this.Reveal.getRevealElement().classList.remove("overview-deactivating")}),1),this.Reveal.getRevealElement().appendChild(this.Reveal.getBackgroundsElement()),t(this.Reveal.getRevealElement(),m).forEach((e=>{a(e,""),e.removeEventListener("click",this.onSlideClicked,!0)})),t(this.Reveal.getBackgroundsElement(),".slide-background").forEach((e=>{a(e,"")})),this.Reveal.transformSlides({overview:""});const 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t=e.slideBackgroundElement,i=e.slideBackgroundContentElement,s={background:e.getAttribute("data-background"),backgroundSize:e.getAttribute("data-background-size"),backgroundImage:e.getAttribute("data-background-image"),backgroundVideo:e.getAttribute("data-background-video"),backgroundIframe:e.getAttribute("data-background-iframe"),backgroundColor:e.getAttribute("data-background-color"),backgroundGradient:e.getAttribute("data-background-gradient"),backgroundRepeat:e.getAttribute("data-background-repeat"),backgroundPosition:e.getAttribute("data-background-position"),backgroundTransition:e.getAttribute("data-background-transition"),backgroundOpacity:e.getAttribute("data-background-opacity")},a=e.hasAttribute("data-preload");e.classList.remove("has-dark-background"),e.classList.remove("has-light-background"),t.removeAttribute("data-loaded"),t.removeAttribute("data-background-hash"),t.removeAttribute("data-background-size"),t.removeAttribute("data-background-transition"),t.style.backgroundColor="",i.style.backgroundSize="",i.style.backgroundRepeat="",i.style.backgroundPosition="",i.style.backgroundImage="",i.style.opacity="",i.innerHTML="",s.background&&(/^(http|file|\/\/)/gi.test(s.background)||/\.(svg|png|jpg|jpeg|gif|bmp|webp)([?#\s]|$)/gi.test(s.background)?e.setAttribute("data-background-image",s.background):t.style.background=s.background),(s.background||s.backgroundColor||s.backgroundGradient||s.backgroundImage||s.backgroundVideo||s.backgroundIframe)&&t.setAttribute("data-background-hash",s.background+s.backgroundSize+s.backgroundImage+s.backgroundVideo+s.backgroundIframe+s.backgroundColor+s.backgroundGradient+s.backgroundRepeat+s.backgroundPosition+s.backgroundTransition+s.backgroundOpacity),s.backgroundSize&&t.setAttribute("data-background-size",s.backgroundSize),s.backgroundColor&&(t.style.backgroundColor=s.backgroundColor),s.backgroundGradient&&(t.style.backgroundImage=s.backgroundGradient),s.backgroundTransition&&t.setAttribute("data-background-transition",s.backgroundTransition),a&&t.setAttribute("data-preload",""),s.backgroundSize&&(i.style.backgroundSize=s.backgroundSize),s.backgroundRepeat&&(i.style.backgroundRepeat=s.backgroundRepeat),s.backgroundPosition&&(i.style.backgroundPosition=s.backgroundPosition),s.backgroundOpacity&&(i.style.opacity=s.backgroundOpacity);const 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i=this.Reveal.getConfig(),s=this.Reveal.getCurrentSlide(),a=this.Reveal.getIndices(),n=null,r=i.rtl?"future":"past",o=i.rtl?"past":"future";if(Array.from(this.element.childNodes).forEach(((i,s)=>{i.classList.remove("past","present","future"),sa.h?i.classList.add(o):(i.classList.add("present"),n=i),(e||s===a.h)&&t(i,".slide-background").forEach(((e,t)=>{e.classList.remove("past","present","future");const i="number"==typeof a.v?a.v:0;ti?e.classList.add("future"):(e.classList.add("present"),s===a.h&&(n=e))}))})),this.previousBackground&&!this.previousBackground.closest("body")&&(this.previousBackground=null),n&&this.previousBackground){let e=this.previousBackground.getAttribute("data-background-hash"),t=n.getAttribute("data-background-hash");if(t&&t===e&&n!==this.previousBackground){this.element.classList.add("no-transition");const e=n.querySelector("video"),t=this.previousBackground.querySelector("video");if(e&&t){const i=e.parentNode;t.parentNode.appendChild(e),i.appendChild(t)}}}if(this.previousBackground&&this.Reveal.slideContent.stopEmbeddedContent(this.previousBackground,{unloadIframes:!this.Reveal.slideContent.shouldPreload(this.previousBackground)}),n){this.Reveal.slideContent.startEmbeddedContent(n);let e=n.querySelector(".slide-background-content");if(e){let t=e.style.backgroundImage||"";/\.gif/i.test(t)&&(e.style.backgroundImage="",window.getComputedStyle(e).opacity,e.style.backgroundImage=t)}this.previousBackground=n}s&&this.bubbleSlideContrastClassToElement(s,this.Reveal.getRevealElement()),setTimeout((()=>{this.element.classList.remove("no-transition")}),10)}updateParallax(){let e=this.Reveal.getIndices();if(this.Reveal.getConfig().parallaxBackgroundImage){let t,i,s=this.Reveal.getHorizontalSlides(),a=this.Reveal.getVerticalSlides(),n=this.element.style.backgroundSize.split(" ");1===n.length?t=i=parseInt(n[0],10):(t=parseInt(n[0],10),i=parseInt(n[1],10));let r,o,l=this.element.offsetWidth,d=s.length;r="number"==typeof this.Reveal.getConfig().parallaxBackgroundHorizontal?this.Reveal.getConfig().parallaxBackgroundHorizontal:d>1?(t-l)/(d-1):0,o=r*e.h*-1;let c,h,u=this.element.offsetHeight,g=a.length;c="number"==typeof this.Reveal.getConfig().parallaxBackgroundVertical?this.Reveal.getConfig().parallaxBackgroundVertical:(i-u)/(g-1),h=g>0?c*e.v:0,this.element.style.backgroundPosition=o+"px "+-h+"px"}}destroy(){this.element.remove()}}let k=0;class L{constructor(e){this.Reveal=e}run(e,t){this.reset();let i=this.Reveal.getSlides(),s=i.indexOf(t),a=i.indexOf(e);if(e&&t&&e.hasAttribute("data-auto-animate")&&t.hasAttribute("data-auto-animate")&&e.getAttribute("data-auto-animate-id")===t.getAttribute("data-auto-animate-id")&&!(s>a?t:e).hasAttribute("data-auto-animate-restart")){this.autoAnimateStyleSheet=this.autoAnimateStyleSheet||l();let i=this.getAutoAnimateOptions(t);e.dataset.autoAnimate="pending",t.dataset.autoAnimate="pending",i.slideDirection=s>a?"forward":"backward";let n="none"===e.style.display;n&&(e.style.display=this.Reveal.getConfig().display);let r=this.getAutoAnimatableElements(e,t).map((e=>this.autoAnimateElements(e.from,e.to,e.options||{},i,k++)));if(n&&(e.style.display="none"),"false"!==t.dataset.autoAnimateUnmatched&&!0===this.Reveal.getConfig().autoAnimateUnmatched){let e=.8*i.duration,s=.2*i.duration;this.getUnmatchedAutoAnimateElements(t).forEach((e=>{let t=this.getAutoAnimateOptions(e,i),s="unmatched";t.duration===i.duration&&t.delay===i.delay||(s="unmatched-"+k++,r.push(`[data-auto-animate="running"] [data-auto-animate-target="${s}"] { transition: opacity ${t.duration}s ease ${t.delay}s; }`)),e.dataset.autoAnimateTarget=s}),this),r.push(`[data-auto-animate="running"] [data-auto-animate-target="unmatched"] { transition: opacity ${e}s ease ${s}s; 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r=this.getAutoAnimatableProperties("from",e,i),o=this.getAutoAnimatableProperties("to",t,i);if(t.classList.contains("fragment")&&(delete o.styles.opacity,e.classList.contains("fragment"))){(e.className.match(w)||[""])[0]===(t.className.match(w)||[""])[0]&&"forward"===s.slideDirection&&t.classList.add("visible","disabled")}if(!1!==i.translate||!1!==i.scale){let e=this.Reveal.getScale(),t={x:(r.x-o.x)/e,y:(r.y-o.y)/e,scaleX:r.width/o.width,scaleY:r.height/o.height};t.x=Math.round(1e3*t.x)/1e3,t.y=Math.round(1e3*t.y)/1e3,t.scaleX=Math.round(1e3*t.scaleX)/1e3,t.scaleX=Math.round(1e3*t.scaleX)/1e3;let s=!1!==i.translate&&(0!==t.x||0!==t.y),a=!1!==i.scale&&(0!==t.scaleX||0!==t.scaleY);if(s||a){let e=[];s&&e.push(`translate(${t.x}px, ${t.y}px)`),a&&e.push(`scale(${t.scaleX}, ${t.scaleY})`),r.styles.transform=e.join(" "),r.styles["transform-origin"]="top left",o.styles.transform="none"}}for(let e in o.styles){const t=o.styles[e],i=r.styles[e];t===i?delete o.styles[e]:(!0===t.explicitValue&&(o.styles[e]=t.value),!0===i.explicitValue&&(r.styles[e]=i.value))}let l="",d=Object.keys(o.styles);if(d.length>0){r.styles.transition="none",o.styles.transition=`all ${n.duration}s ${n.easing} ${n.delay}s`,o.styles["transition-property"]=d.join(", "),o.styles["will-change"]=d.join(", "),l='[data-auto-animate-target="'+a+'"] {'+Object.keys(r.styles).map((e=>e+": "+r.styles[e]+" !important;")).join("")+'}[data-auto-animate="running"] [data-auto-animate-target="'+a+'"] {'+Object.keys(o.styles).map((e=>e+": "+o.styles[e]+" !important;")).join("")+"}"}return l}getAutoAnimateOptions(t,i){let s={easing:this.Reveal.getConfig().autoAnimateEasing,duration:this.Reveal.getConfig().autoAnimateDuration,delay:0};if(s=e(s,i),t.parentNode){let e=r(t.parentNode,"[data-auto-animate-target]");e&&(s=this.getAutoAnimateOptions(e,s))}return t.dataset.autoAnimateEasing&&(s.easing=t.dataset.autoAnimateEasing),t.dataset.autoAnimateDuration&&(s.duration=parseFloat(t.dataset.autoAnimateDuration)),t.dataset.autoAnimateDelay&&(s.delay=parseFloat(t.dataset.autoAnimateDelay)),s}getAutoAnimatableProperties(e,t,i){let s=this.Reveal.getConfig(),a={styles:[]};if(!1!==i.translate||!1!==i.scale){let e;if("function"==typeof i.measure)e=i.measure(t);else if(s.center)e=t.getBoundingClientRect();else{let i=this.Reveal.getScale();e={x:t.offsetLeft*i,y:t.offsetTop*i,width:t.offsetWidth*i,height:t.offsetHeight*i}}a.x=e.x,a.y=e.y,a.width=e.width,a.height=e.height}const n=getComputedStyle(t);return(i.styles||s.autoAnimateStyles).forEach((t=>{let i;"string"==typeof t&&(t={property:t}),void 0!==t.from&&"from"===e?i={value:t.from,explicitValue:!0}:void 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iframe",(e=>e.nodeName+":::"+(e.getAttribute("src")||e.getAttribute("data-src")))),this.findAutoAnimateMatches(i,e,t,"pre",(e=>e.nodeName+":::"+e.innerText)),i.forEach((e=>{n(e.from,s)?e.options={scale:!1}:n(e.from,"pre")&&(e.options={scale:!1,styles:["width","height"]},this.findAutoAnimateMatches(i,e.from,e.to,".hljs .hljs-ln-code",(e=>e.textContent),{scale:!1,styles:[],measure:this.getLocalBoundingBox.bind(this)}),this.findAutoAnimateMatches(i,e.from,e.to,".hljs .hljs-ln-numbers[data-line-number]",(e=>e.getAttribute("data-line-number")),{scale:!1,styles:["width"],measure:this.getLocalBoundingBox.bind(this)}))}),this),i}getLocalBoundingBox(e){const t=this.Reveal.getScale();return{x:Math.round(e.offsetLeft*t*100)/100,y:Math.round(e.offsetTop*t*100)/100,width:Math.round(e.offsetWidth*t*100)/100,height:Math.round(e.offsetHeight*t*100)/100}}findAutoAnimateMatches(e,t,i,s,a,n){let r={},o={};[].slice.call(t.querySelectorAll(s)).forEach(((e,t)=>{const i=a(e);"string"==typeof i&&i.length&&(r[i]=r[i]||[],r[i].push(e))})),[].slice.call(i.querySelectorAll(s)).forEach(((t,i)=>{const s=a(t);let l;if(o[s]=o[s]||[],o[s].push(t),r[s]){const e=o[s].length-1,t=r[s].length-1;r[s][e]?(l=r[s][e],r[s][e]=null):r[s][t]&&(l=r[s][t],r[s][t]=null)}l&&e.push({from:l,to:t,options:n})}))}getUnmatchedAutoAnimateElements(e){return[].slice.call(e.children).reduce(((e,t)=>{const i=t.querySelector("[data-auto-animate-target]");return t.hasAttribute("data-auto-animate-target")||i||e.push(t),t.querySelector("[data-auto-animate-target]")&&(e=e.concat(this.getUnmatchedAutoAnimateElements(t))),e}),[])}}class C{constructor(e){this.Reveal=e,this.active=!1,this.activatedCallbacks=[],this.onScroll=this.onScroll.bind(this)}activate(){if(this.active)return;const e=this.Reveal.getState();this.active=!0,this.slideHTMLBeforeActivation=this.Reveal.getSlidesElement().innerHTML;const i=t(this.Reveal.getRevealElement(),f),s=t(this.Reveal.getRevealElement(),".backgrounds>.slide-background");let a;this.viewportElement.classList.add("loading-scroll-mode","reveal-scroll");const n=window.getComputedStyle(this.viewportElement);n&&n.background&&(a=n.background);const r=[],o=i[0].parentNode;let l;const d=(e,t,i,n)=>{let o;if(l&&this.Reveal.shouldAutoAnimateBetween(l,e))o=document.createElement("div"),o.className="scroll-page-content scroll-auto-animate-page",o.style.display="none",l.closest(".scroll-page-content").parentNode.appendChild(o);else{const e=document.createElement("div");if(e.className="scroll-page",r.push(e),n&&s.length>t){const i=s[t],n=window.getComputedStyle(i);n&&n.background?e.style.background=n.background:a&&(e.style.background=a)}else a&&(e.style.background=a);const 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e=this.Reveal.getState();this.active=!1,this.viewportElement.removeEventListener("scroll",this.onScroll),this.viewportElement.classList.remove("reveal-scroll"),this.removeProgressBar(),this.Reveal.getSlidesElement().innerHTML=this.slideHTMLBeforeActivation,this.Reveal.sync(),this.Reveal.setState(e),this.slideHTMLBeforeActivation=null}toggle(e){"boolean"==typeof e?e?this.activate():this.deactivate():this.isActive()?this.deactivate():this.activate()}isActive(){return 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t=(e.clientY-this.progressBarInner.getBoundingClientRect().top)/this.progressBarHeight;t=Math.max(Math.min(t,1),0),this.viewportElement.scrollTop=t*(this.viewportElement.scrollHeight-this.viewportElement.offsetHeight)},t=i=>{this.draggingProgressBar=!1,this.showProgressBar(),document.removeEventListener("mousemove",e),document.removeEventListener("mouseup",t)};this.progressBarInner.addEventListener("mousedown",(i=>{i.preventDefault(),this.draggingProgressBar=!0,document.addEventListener("mousemove",e),document.addEventListener("mouseup",t),e(i)}))}removeProgressBar(){this.progressBar&&(this.progressBar.remove(),this.progressBar=null)}layout(){this.isActive()&&(this.syncPages(),this.syncScrollPosition())}syncPages(){const e=this.Reveal.getConfig(),t=this.Reveal.getComputedSlideSize(window.innerWidth,window.innerHeight),i=this.Reveal.getScale(),s="compact"===e.scrollLayout,a=this.viewportElement.offsetHeight,n=t.height*i,r=s?n:a;this.scrollTriggerHeight=s?n:a,this.viewportElement.style.setProperty("--page-height",r+"px"),this.viewportElement.style.scrollSnapType="string"==typeof e.scrollSnap?`y ${e.scrollSnap}`:"",this.slideTriggers=[];const o=Array.from(this.Reveal.getRevealElement().querySelectorAll(".scroll-page"));this.pages=o.map((i=>{const n=this.createPage({pageElement:i,slideElement:i.querySelector("section"),stickyElement:i.querySelector(".scroll-page-sticky"),contentElement:i.querySelector(".scroll-page-content"),backgroundElement:i.querySelector(".slide-background"),autoAnimateElements:i.querySelectorAll(".scroll-auto-animate-page"),autoAnimatePages:[]});n.pageElement.style.setProperty("--slide-height",!0===e.center?"auto":t.height+"px"),this.slideTriggers.push({page:n,activate:()=>this.activatePage(n),deactivate:()=>this.deactivatePage(n)}),this.createFragmentTriggersForPage(n),n.autoAnimateElements.length>0&&this.createAutoAnimateTriggersForPage(n);let o=Math.max(n.scrollTriggers.length-1,0);o+=n.autoAnimatePages.reduce(((e,t)=>e+Math.max(t.scrollTriggers.length-1,0)),n.autoAnimatePages.length),n.pageElement.querySelectorAll(".scroll-snap-point").forEach((e=>e.remove()));for(let e=0;e0?(n.pageHeight=a,n.pageElement.style.setProperty("--page-height",a+"px")):(n.pageHeight=r,n.pageElement.style.removeProperty("--page-height")),n.scrollPadding=this.scrollTriggerHeight*o,n.totalHeight=n.pageHeight+n.scrollPadding,n.pageElement.style.setProperty("--page-scroll-padding",n.scrollPadding+"px"),o>0?(n.stickyElement.style.position="sticky",n.stickyElement.style.top=Math.max((a-n.pageHeight)/2,0)+"px"):(n.stickyElement.style.position="relative",n.pageElement.style.scrollSnapAlign=n.pageHeight1?(this.progressBar||this.createProgressBar(),this.syncProgressBar()):this.removeProgressBar()}setTriggerRanges(){this.totalScrollTriggerCount=this.slideTriggers.reduce(((e,t)=>e+Math.max(t.page.scrollTriggers.length,1)),0);let e=0;this.slideTriggers.forEach(((t,i)=>{t.range=[e,e+Math.max(t.page.scrollTriggers.length,1)/this.totalScrollTriggerCount];const s=(t.range[1]-t.range[0])/t.page.scrollTriggers.length;t.page.scrollTriggers.forEach(((t,i)=>{t.range=[e+i*s,e+(i+1)*s]})),e=t.range[1]}))}createFragmentTriggersForPage(e,t){t=t||e.slideElement;const i=this.Reveal.fragments.sort(t.querySelectorAll(".fragment"),!0);return i.length&&(e.fragments=this.Reveal.fragments.sort(t.querySelectorAll(".fragment:not(.disabled)")),e.scrollTriggers.push({activate:()=>{this.Reveal.fragments.update(-1,e.fragments,t)}}),i.forEach(((i,s)=>{e.scrollTriggers.push({activate:()=>{this.Reveal.fragments.update(s,e.fragments,t)}})}))),e.scrollTriggers.length}createAutoAnimateTriggersForPage(e){e.autoAnimateElements.length>0&&this.slideTriggers.push(...Array.from(e.autoAnimateElements).map(((t,i)=>{let s=this.createPage({slideElement:t.querySelector("section"),contentElement:t,backgroundElement:t.querySelector(".slide-background")});return this.createFragmentTriggersForPage(s,s.slideElement),e.autoAnimatePages.push(s),{page:s,activate:()=>this.activatePage(s),deactivate:()=>this.deactivatePage(s)}})))}createPage(e){return e.scrollTriggers=[],e.indexh=parseInt(e.slideElement.getAttribute("data-index-h"),10),e.indexv=parseInt(e.slideElement.getAttribute("data-index-v"),10),e}syncProgressBar(){this.progressBarInner.querySelectorAll(".scrollbar-slide").forEach((e=>e.remove()));const e=this.viewportElement.scrollHeight,t=this.viewportElement.offsetHeight,i=t/e;this.progressBarHeight=this.progressBarInner.offsetHeight,this.playheadHeight=Math.max(i*this.progressBarHeight,8),this.progressBarScrollableHeight=this.progressBarHeight-this.playheadHeight;const s=t/e*this.progressBarHeight,a=Math.min(s/8,4);this.progressBarPlayhead.style.height=this.playheadHeight-a+"px",s>6?this.slideTriggers.forEach((e=>{const{page:t}=e;t.progressBarSlide=document.createElement("div"),t.progressBarSlide.className="scrollbar-slide",t.progressBarSlide.style.top=e.range[0]*this.progressBarHeight+"px",t.progressBarSlide.style.height=(e.range[1]-e.range[0])*this.progressBarHeight-a+"px",t.progressBarSlide.classList.toggle("has-triggers",t.scrollTriggers.length>0),this.progressBarInner.appendChild(t.progressBarSlide),t.scrollTriggerElements=t.scrollTriggers.map(((i,s)=>{const n=document.createElement("div");return n.className="scrollbar-trigger",n.style.top=(i.range[0]-e.range[0])*this.progressBarHeight+"px",n.style.height=(i.range[1]-i.range[0])*this.progressBarHeight-a+"px",t.progressBarSlide.appendChild(n),0===s&&(n.style.display="none"),n}))})):this.pages.forEach((e=>e.progressBarSlide=null))}syncScrollPosition(){const e=this.viewportElement.offsetHeight,t=e/this.viewportElement.scrollHeight,i=this.viewportElement.scrollTop,s=this.viewportElement.scrollHeight-e,a=Math.max(Math.min(i/s,1),0),n=Math.max(Math.min((i+e/2)/this.viewportElement.scrollHeight,1),0);let r;this.slideTriggers.forEach((e=>{const{page:i}=e;a>=e.range[0]-2*t&&a<=e.range[1]+2*t&&!i.loaded?(i.loaded=!0,this.Reveal.slideContent.load(i.slideElement)):i.loaded&&(i.loaded=!1,this.Reveal.slideContent.unload(i.slideElement)),a>=e.range[0]&&a<=e.range[1]?(this.activateTrigger(e),r=e.page):e.active&&this.deactivateTrigger(e)})),r&&r.scrollTriggers.forEach((e=>{n>=e.range[0]&&n<=e.range[1]?this.activateTrigger(e):e.active&&this.deactivateTrigger(e)})),this.setProgressBarValue(i/(this.viewportElement.scrollHeight-e))}setProgressBarValue(e){this.progressBar&&(this.progressBarPlayhead.style.transform=`translateY(${e*this.progressBarScrollableHeight}px)`,this.getAllPages().filter((e=>e.progressBarSlide)).forEach((e=>{e.progressBarSlide.classList.toggle("active",!0===e.active),e.scrollTriggers.forEach(((t,i)=>{e.scrollTriggerElements[i].classList.toggle("active",!0===e.active&&!0===t.active)}))})),this.showProgressBar())}showProgressBar(){this.progressBar.classList.add("visible"),clearTimeout(this.hideProgressBarTimeout),"auto"!==this.Reveal.getConfig().scrollProgress||this.draggingProgressBar||(this.hideProgressBarTimeout=setTimeout((()=>{this.progressBar&&this.progressBar.classList.remove("visible")}),500))}prev(){this.viewportElement.scrollTop-=this.scrollTriggerHeight}next(){this.viewportElement.scrollTop+=this.scrollTriggerHeight}scrollToSlide(e){if(this.active){const t=this.getScrollTriggerBySlide(e);t&&(this.viewportElement.scrollTop=t.range[0]*(this.viewportElement.scrollHeight-this.viewportElement.offsetHeight))}else this.activatedCallbacks.push((()=>this.scrollToSlide(e)))}storeScrollPosition(){clearTimeout(this.storeScrollPositionTimeout),this.storeScrollPositionTimeout=setTimeout((()=>{sessionStorage.setItem("reveal-scroll-top",this.viewportElement.scrollTop),sessionStorage.setItem("reveal-scroll-origin",location.origin+location.pathname),this.storeScrollPositionTimeout=null}),50)}restoreScrollPosition(){const e=sessionStorage.getItem("reveal-scroll-top"),t=sessionStorage.getItem("reveal-scroll-origin");e&&t===location.origin+location.pathname&&(this.viewportElement.scrollTop=parseInt(e,10))}activatePage(e){if(!e.active){e.active=!0;const{slideElement:t,backgroundElement:i,contentElement:s,indexh:a,indexv:n}=e;s.style.display="block",t.classList.add("present"),i&&i.classList.add("present"),this.Reveal.setCurrentScrollPage(t,a,n),this.Reveal.backgrounds.bubbleSlideContrastClassToElement(t,this.viewportElement),Array.from(s.parentNode.querySelectorAll(".scroll-page-content")).forEach((e=>{e!==s&&(e.style.display="none")}))}}deactivatePage(e){e.active&&(e.active=!1,e.slideElement&&e.slideElement.classList.remove("present"),e.backgroundElement&&e.backgroundElement.classList.remove("present"))}activateTrigger(e){e.active||(e.active=!0,e.activate())}deactivateTrigger(e){e.active&&(e.active=!1,e.deactivate&&e.deactivate())}getSlideByIndices(e,t){const i=this.getAllPages().find((i=>i.indexh===e&&i.indexv===t));return i?i.slideElement:null}getScrollTriggerBySlide(e){return this.slideTriggers.find((t=>t.page.slideElement===e))}getAllPages(){return this.pages.flatMap((e=>[e,...e.autoAnimatePages||[]]))}onScroll(){this.syncScrollPosition(),this.storeScrollPosition()}get viewportElement(){return this.Reveal.getViewportElement()}}class x{constructor(e){this.Reveal=e}async activate(){const e=this.Reveal.getConfig(),i=t(this.Reveal.getRevealElement(),m),s=e.slideNumber&&/all|print/i.test(e.showSlideNumber),a=this.Reveal.getComputedSlideSize(window.innerWidth,window.innerHeight),n=Math.floor(a.width*(1+e.margin)),r=Math.floor(a.height*(1+e.margin)),o=a.width,d=a.height;await new Promise(requestAnimationFrame),l("@page{size:"+n+"px "+r+"px; margin: 0px;}"),l(".reveal section>img, .reveal section>video, .reveal section>iframe{max-width: "+o+"px; max-height:"+d+"px}"),document.documentElement.classList.add("reveal-print","print-pdf"),document.body.style.width=n+"px",document.body.style.height=r+"px";const c=this.Reveal.getViewportElement();let h;if(c){const e=window.getComputedStyle(c);e&&e.background&&(h=e.background)}await new Promise(requestAnimationFrame),this.Reveal.layoutSlideContents(o,d),await new Promise(requestAnimationFrame);const u=i.map((e=>e.scrollHeight)),g=[],p=i[0].parentNode;let v=1;i.forEach((function(i,a){if(!1===i.classList.contains("stack")){let l=(n-o)/2,c=(r-d)/2;const p=u[a];let m=Math.max(Math.ceil(p/r),1);m=Math.min(m,e.pdfMaxPagesPerSlide),(1===m&&e.center||i.classList.contains("center"))&&(c=Math.max((r-p)/2,0));const f=document.createElement("div");if(g.push(f),f.className="pdf-page",f.style.height=(r+e.pdfPageHeightOffset)*m+"px",h&&(f.style.background=h),f.appendChild(i),i.style.left=l+"px",i.style.top=c+"px",i.style.width=o+"px",this.Reveal.slideContent.layout(i),i.slideBackgroundElement&&f.insertBefore(i.slideBackgroundElement,i),e.showNotes){const t=this.Reveal.getSlideNotes(i);if(t){const i=8,s="string"==typeof e.showNotes?e.showNotes:"inline",a=document.createElement("div");a.classList.add("speaker-notes"),a.classList.add("speaker-notes-pdf"),a.setAttribute("data-layout",s),a.innerHTML=t,"separate-page"===s?g.push(a):(a.style.left=i+"px",a.style.bottom=i+"px",a.style.width=n-2*i+"px",f.appendChild(a))}}if(s){const e=document.createElement("div");e.classList.add("slide-number"),e.classList.add("slide-number-pdf"),e.innerHTML=v++,f.appendChild(e)}if(e.pdfSeparateFragments){const e=this.Reveal.fragments.sort(f.querySelectorAll(".fragment"),!0);let t;e.forEach((function(e,i){t&&t.forEach((function(e){e.classList.remove("current-fragment")})),e.forEach((function(e){e.classList.add("visible","current-fragment")}),this);const a=f.cloneNode(!0);if(s){const e=i+1;a.querySelector(".slide-number-pdf").innerHTML+="."+e}g.push(a),t=e}),this),e.forEach((function(e){e.forEach((function(e){e.classList.remove("visible","current-fragment")}))}))}else t(f,".fragment:not(.fade-out)").forEach((function(e){e.classList.add("visible")}))}}),this),await new Promise(requestAnimationFrame),g.forEach((e=>p.appendChild(e))),this.Reveal.slideContent.layout(this.Reveal.getSlidesElement()),this.Reveal.dispatchEvent({type:"pdf-ready"}),c.classList.remove("loading-scroll-mode")}isActive(){return"print"===this.Reveal.getConfig().view}}class P{constructor(e){this.Reveal=e}configure(e,t){!1===e.fragments?this.disable():!1===t.fragments&&this.enable()}disable(){t(this.Reveal.getSlidesElement(),".fragment").forEach((e=>{e.classList.add("visible"),e.classList.remove("current-fragment")}))}enable(){t(this.Reveal.getSlidesElement(),".fragment").forEach((e=>{e.classList.remove("visible"),e.classList.remove("current-fragment")}))}availableRoutes(){let e=this.Reveal.getCurrentSlide();if(e&&this.Reveal.getConfig().fragments){let t=e.querySelectorAll(".fragment:not(.disabled)"),i=e.querySelectorAll(".fragment:not(.disabled):not(.visible)");return{prev:t.length-i.length>0,next:!!i.length}}return{prev:!1,next:!1}}sort(e,t=!1){e=Array.from(e);let i=[],s=[],a=[];e.forEach((e=>{if(e.hasAttribute("data-fragment-index")){let t=parseInt(e.getAttribute("data-fragment-index"),10);i[t]||(i[t]=[]),i[t].push(e)}else s.push([e])})),i=i.concat(s);let n=0;return i.forEach((e=>{e.forEach((e=>{a.push(e),e.setAttribute("data-fragment-index",n)})),n++})),!0===t?i:a}sortAll(){this.Reveal.getHorizontalSlides().forEach((e=>{let i=t(e,"section");i.forEach(((e,t)=>{this.sort(e.querySelectorAll(".fragment"))}),this),0===i.length&&this.sort(e.querySelectorAll(".fragment"))}))}update(e,t,i=this.Reveal.getCurrentSlide()){let s={shown:[],hidden:[]};if(i&&this.Reveal.getConfig().fragments&&(t=t||this.sort(i.querySelectorAll(".fragment"))).length){let a=0;if("number"!=typeof e){let t=this.sort(i.querySelectorAll(".fragment.visible")).pop();t&&(e=parseInt(t.getAttribute("data-fragment-index")||0,10))}Array.from(t).forEach(((t,i)=>{if(t.hasAttribute("data-fragment-index")&&(i=parseInt(t.getAttribute("data-fragment-index"),10)),a=Math.max(a,i),i<=e){let a=t.classList.contains("visible");t.classList.add("visible"),t.classList.remove("current-fragment"),i===e&&(this.Reveal.announceStatus(this.Reveal.getStatusText(t)),t.classList.add("current-fragment"),this.Reveal.slideContent.startEmbeddedContent(t)),a||(s.shown.push(t),this.Reveal.dispatchEvent({target:t,type:"visible",bubbles:!1}))}else{let e=t.classList.contains("visible");t.classList.remove("visible"),t.classList.remove("current-fragment"),e&&(this.Reveal.slideContent.stopEmbeddedContent(t),s.hidden.push(t),this.Reveal.dispatchEvent({target:t,type:"hidden",bubbles:!1}))}})),e="number"==typeof e?e:-1,e=Math.max(Math.min(e,a),-1),i.setAttribute("data-fragment",e)}return s.hidden.length&&this.Reveal.dispatchEvent({type:"fragmenthidden",data:{fragment:s.hidden[0],fragments:s.hidden}}),s.shown.length&&this.Reveal.dispatchEvent({type:"fragmentshown",data:{fragment:s.shown[0],fragments:s.shown}}),s}sync(e=this.Reveal.getCurrentSlide()){return this.sort(e.querySelectorAll(".fragment"))}goto(e,t=0){let i=this.Reveal.getCurrentSlide();if(i&&this.Reveal.getConfig().fragments){let s=this.sort(i.querySelectorAll(".fragment:not(.disabled)"));if(s.length){if("number"!=typeof e){let t=this.sort(i.querySelectorAll(".fragment:not(.disabled).visible")).pop();e=t?parseInt(t.getAttribute("data-fragment-index")||0,10):-1}e+=t;let a=this.update(e,s);return this.Reveal.controls.update(),this.Reveal.progress.update(),this.Reveal.getConfig().fragmentInURL&&this.Reveal.location.writeURL(),!(!a.shown.length&&!a.hidden.length)}}return!1}next(){return this.goto(null,1)}prev(){return this.goto(null,-1)}}class T{constructor(e){this.Reveal=e,this.active=!1,this.onSlideClicked=this.onSlideClicked.bind(this)}activate(){if(this.Reveal.getConfig().overview&&!this.Reveal.isScrollView()&&!this.isActive()){this.active=!0,this.Reveal.getRevealElement().classList.add("overview"),this.Reveal.cancelAutoSlide(),this.Reveal.getSlidesElement().appendChild(this.Reveal.getBackgroundsElement()),t(this.Reveal.getRevealElement(),m).forEach((e=>{e.classList.contains("stack")||e.addEventListener("click",this.onSlideClicked,!0)}));const e=70,i=this.Reveal.getComputedSlideSize();this.overviewSlideWidth=i.width+e,this.overviewSlideHeight=i.height+e,this.Reveal.getConfig().rtl&&(this.overviewSlideWidth=-this.overviewSlideWidth),this.Reveal.updateSlidesVisibility(),this.layout(),this.update(),this.Reveal.layout();const s=this.Reveal.getIndices();this.Reveal.dispatchEvent({type:"overviewshown",data:{indexh:s.h,indexv:s.v,currentSlide:this.Reveal.getCurrentSlide()}})}}layout(){this.Reveal.getHorizontalSlides().forEach(((e,i)=>{e.setAttribute("data-index-h",i),a(e,"translate3d("+i*this.overviewSlideWidth+"px, 0, 0)"),e.classList.contains("stack")&&t(e,"section").forEach(((e,t)=>{e.setAttribute("data-index-h",i),e.setAttribute("data-index-v",t),a(e,"translate3d(0, "+t*this.overviewSlideHeight+"px, 0)")}))})),Array.from(this.Reveal.getBackgroundsElement().childNodes).forEach(((e,i)=>{a(e,"translate3d("+i*this.overviewSlideWidth+"px, 0, 0)"),t(e,".slide-background").forEach(((e,t)=>{a(e,"translate3d(0, "+t*this.overviewSlideHeight+"px, 0)")}))}))}update(){const e=Math.min(window.innerWidth,window.innerHeight),t=Math.max(e/5,150)/e,i=this.Reveal.getIndices();this.Reveal.transformSlides({overview:["scale("+t+")","translateX("+-i.h*this.overviewSlideWidth+"px)","translateY("+-i.v*this.overviewSlideHeight+"px)"].join(" ")})}deactivate(){if(this.Reveal.getConfig().overview){this.active=!1,this.Reveal.getRevealElement().classList.remove("overview"),this.Reveal.getRevealElement().classList.add("overview-deactivating"),setTimeout((()=>{this.Reveal.getRevealElement().classList.remove("overview-deactivating")}),1),this.Reveal.getRevealElement().appendChild(this.Reveal.getBackgroundsElement()),t(this.Reveal.getRevealElement(),m).forEach((e=>{a(e,""),e.removeEventListener("click",this.onSlideClicked,!0)})),t(this.Reveal.getBackgroundsElement(),".slide-background").forEach((e=>{a(e,"")})),this.Reveal.transformSlides({overview:""});const e=this.Reveal.getIndices();this.Reveal.slide(e.h,e.v),this.Reveal.layout(),this.Reveal.cueAutoSlide(),this.Reveal.dispatchEvent({type:"overviewhidden",data:{indexh:e.h,indexv:e.v,currentSlide:this.Reveal.getCurrentSlide()}})}}toggle(e){"boolean"==typeof e?e?this.activate():this.deactivate():this.isActive()?this.deactivate():this.activate()}isActive(){return this.active}onSlideClicked(e){if(this.isActive()){e.preventDefault();let t=e.target;for(;t&&!t.nodeName.match(/section/gi);)t=t.parentNode;if(t&&!t.classList.contains("disabled")&&(this.deactivate(),t.nodeName.match(/section/gi))){let e=parseInt(t.getAttribute("data-index-h"),10),i=parseInt(t.getAttribute("data-index-v"),10);this.Reveal.slide(e,i)}}}}class N{constructor(e){this.Reveal=e,this.shortcuts={},this.bindings={},this.onDocumentKeyDown=this.onDocumentKeyDown.bind(this)}configure(e,t){"linear"===e.navigationMode?(this.shortcuts["→ , ↓ , SPACE , N , L , J"]="Next slide",this.shortcuts["← , ↑ , P , H , K"]="Previous 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this.Reveal[t]&&this.Reveal[t].call(),u=!0}!1===u&&(u=!0,80===i||33===i?this.Reveal.prev({skipFragments:e.altKey}):78===i||34===i?this.Reveal.next({skipFragments:e.altKey}):72===i||37===i?e.shiftKey?this.Reveal.slide(0):!this.Reveal.overview.isActive()&&h?t.rtl?this.Reveal.next({skipFragments:e.altKey}):this.Reveal.prev({skipFragments:e.altKey}):this.Reveal.left({skipFragments:e.altKey}):76===i||39===i?e.shiftKey?this.Reveal.slide(this.Reveal.getHorizontalSlides().length-1):!this.Reveal.overview.isActive()&&h?t.rtl?this.Reveal.prev({skipFragments:e.altKey}):this.Reveal.next({skipFragments:e.altKey}):this.Reveal.right({skipFragments:e.altKey}):75===i||38===i?e.shiftKey?this.Reveal.slide(void 0,0):!this.Reveal.overview.isActive()&&h?this.Reveal.prev({skipFragments:e.altKey}):this.Reveal.up({skipFragments:e.altKey}):74===i||40===i?e.shiftKey?this.Reveal.slide(void 0,Number.MAX_VALUE):!this.Reveal.overview.isActive()&&h?this.Reveal.next({skipFragments:e.altKey}):this.Reveal.down({skipFragments:e.altKey}):36===i?this.Reveal.slide(0):35===i?this.Reveal.slide(this.Reveal.getHorizontalSlides().length-1):32===i?(this.Reveal.overview.isActive()&&this.Reveal.overview.deactivate(),e.shiftKey?this.Reveal.prev({skipFragments:e.altKey}):this.Reveal.next({skipFragments:e.altKey})):[58,59,66,86,190].includes(i)||191===i&&!e.shiftKey?this.Reveal.togglePause():70===i?o(t.embedded?this.Reveal.getViewportElement():document.documentElement):65===i?t.autoSlideStoppable&&this.Reveal.toggleAutoSlide(s):71===i?t.jumpToSlide&&this.Reveal.toggleJumpToSlide():63!==i&&191!==i||!e.shiftKey?112===i?this.Reveal.toggleHelp():u=!1:this.Reveal.toggleHelp()),u?e.preventDefault&&e.preventDefault():27!==i&&79!==i||(!1===this.Reveal.closeOverlay()&&this.Reveal.overview.toggle(),e.preventDefault&&e.preventDefault()),this.Reveal.cueAutoSlide()}}class M{MAX_REPLACE_STATE_FREQUENCY=1e3;constructor(e){this.Reveal=e,this.writeURLTimeout=0,this.replaceStateTimestamp=0,this.onWindowHashChange=this.onWindowHashChange.bind(this)}bind(){window.addEventListener("hashchange",this.onWindowHashChange,!1)}unbind(){window.removeEventListener("hashchange",this.onWindowHashChange,!1)}getIndicesFromHash(e=window.location.hash,t={}){let i=e.replace(/^#\/?/,""),s=i.split("/");if(/^[0-9]*$/.test(s[0])||!i.length){const e=this.Reveal.getConfig();let i,a=e.hashOneBasedIndex||t.oneBasedIndex?1:0,n=parseInt(s[0],10)-a||0,r=parseInt(s[1],10)-a||0;return e.fragmentInURL&&(i=parseInt(s[2],10),isNaN(i)&&(i=void 0)),{h:n,v:r,f:i}}{let e,t;/\/[-\d]+$/g.test(i)&&(t=parseInt(i.split("/").pop(),10),t=isNaN(t)?void 0:t,i=i.split("/").shift());try{e=document.getElementById(decodeURIComponent(i)).closest(".slides section")}catch(e){}if(e)return{...this.Reveal.getIndices(e),f:t}}return null}readURL(){const e=this.Reveal.getIndices(),t=this.getIndicesFromHash();t?t.h===e.h&&t.v===e.v&&void 0===t.f||this.Reveal.slide(t.h,t.v,t.f):this.Reveal.slide(e.h||0,e.v||0)}writeURL(e){let t=this.Reveal.getConfig(),i=this.Reveal.getCurrentSlide();if(clearTimeout(this.writeURLTimeout),"number"==typeof e)this.writeURLTimeout=setTimeout(this.writeURL,e);else if(i){let e=this.getHash();t.history?window.location.hash=e:t.hash&&("/"===e?this.debouncedReplaceState(window.location.pathname+window.location.search):this.debouncedReplaceState("#"+e))}}replaceState(e){window.history.replaceState(null,null,e),this.replaceStateTimestamp=Date.now()}debouncedReplaceState(e){clearTimeout(this.replaceStateTimeout),Date.now()-this.replaceStateTimestamp>this.MAX_REPLACE_STATE_FREQUENCY?this.replaceState(e):this.replaceStateTimeout=setTimeout((()=>this.replaceState(e)),this.MAX_REPLACE_STATE_FREQUENCY)}getHash(e){let t="/",i=e||this.Reveal.getCurrentSlide(),s=i?i.getAttribute("id"):null;s&&(s=encodeURIComponent(s));let a=this.Reveal.getIndices(e);if(this.Reveal.getConfig().fragmentInURL||(a.f=void 0),"string"==typeof s&&s.length)t="/"+s,a.f>=0&&(t+="/"+a.f);else{let e=this.Reveal.getConfig().hashOneBasedIndex?1:0;(a.h>0||a.v>0||a.f>=0)&&(t+=a.h+e),(a.v>0||a.f>=0)&&(t+="/"+(a.v+e)),a.f>=0&&(t+="/"+a.f)}return t}onWindowHashChange(e){this.readURL()}}class I{constructor(e){this.Reveal=e,this.onNavigateLeftClicked=this.onNavigateLeftClicked.bind(this),this.onNavigateRightClicked=this.onNavigateRightClicked.bind(this),this.onNavigateUpClicked=this.onNavigateUpClicked.bind(this),this.onNavigateDownClicked=this.onNavigateDownClicked.bind(this),this.onNavigatePrevClicked=this.onNavigatePrevClicked.bind(this),this.onNavigateNextClicked=this.onNavigateNextClicked.bind(this),this.onEnterFullscreen=this.onEnterFullscreen.bind(this)}render(){const e=this.Reveal.getConfig().rtl,i=this.Reveal.getRevealElement();this.element=document.createElement("aside"),this.element.className="controls",this.element.innerHTML=`\n\t\t\t\n\t\t\t\n\t\t\t`,this.Reveal.getRevealElement().appendChild(this.element),this.controlsLeft=t(i,".navigate-left"),this.controlsRight=t(i,".navigate-right"),this.controlsUp=t(i,".navigate-up"),this.controlsDown=t(i,".navigate-down"),this.controlsPrev=t(i,".navigate-prev"),this.controlsNext=t(i,".navigate-next"),this.controlsFullscreen=t(i,".enter-fullscreen"),this.controlsRightArrow=this.element.querySelector(".navigate-right"),this.controlsLeftArrow=this.element.querySelector(".navigate-left"),this.controlsDownArrow=this.element.querySelector(".navigate-down")}configure(e,t){this.element.style.display=e.controls?"block":"none",this.element.setAttribute("data-controls-layout",e.controlsLayout),this.element.setAttribute("data-controls-back-arrows",e.controlsBackArrows)}bind(){let e=["touchstart","click"];g&&(e=["touchstart"]),e.forEach((e=>{this.controlsLeft.forEach((t=>t.addEventListener(e,this.onNavigateLeftClicked,!1))),this.controlsRight.forEach((t=>t.addEventListener(e,this.onNavigateRightClicked,!1))),this.controlsUp.forEach((t=>t.addEventListener(e,this.onNavigateUpClicked,!1))),this.controlsDown.forEach((t=>t.addEventListener(e,this.onNavigateDownClicked,!1))),this.controlsPrev.forEach((t=>t.addEventListener(e,this.onNavigatePrevClicked,!1))),this.controlsNext.forEach((t=>t.addEventListener(e,this.onNavigateNextClicked,!1))),this.controlsFullscreen.forEach((t=>t.addEventListener(e,this.onEnterFullscreen,!1)))}))}unbind(){["touchstart","click"].forEach((e=>{this.controlsLeft.forEach((t=>t.removeEventListener(e,this.onNavigateLeftClicked,!1))),this.controlsRight.forEach((t=>t.removeEventListener(e,this.onNavigateRightClicked,!1))),this.controlsUp.forEach((t=>t.removeEventListener(e,this.onNavigateUpClicked,!1))),this.controlsDown.forEach((t=>t.removeEventListener(e,this.onNavigateDownClicked,!1))),this.controlsPrev.forEach((t=>t.removeEventListener(e,this.onNavigatePrevClicked,!1))),this.controlsNext.forEach((t=>t.removeEventListener(e,this.onNavigateNextClicked,!1))),this.controlsFullscreen.forEach((t=>t.removeEventListener(e,this.onEnterFullscreen,!1)))}))}update(){let e=this.Reveal.availableRoutes();[...this.controlsLeft,...this.controlsRight,...this.controlsUp,...this.controlsDown,...this.controlsPrev,...this.controlsNext].forEach((e=>{e.classList.remove("enabled","fragmented"),e.setAttribute("disabled","disabled")})),e.left&&this.controlsLeft.forEach((e=>{e.classList.add("enabled"),e.removeAttribute("disabled")})),e.right&&this.controlsRight.forEach((e=>{e.classList.add("enabled"),e.removeAttribute("disabled")})),e.up&&this.controlsUp.forEach((e=>{e.classList.add("enabled"),e.removeAttribute("disabled")})),e.down&&this.controlsDown.forEach((e=>{e.classList.add("enabled"),e.removeAttribute("disabled")})),(e.left||e.up)&&this.controlsPrev.forEach((e=>{e.classList.add("enabled"),e.removeAttribute("disabled")})),(e.right||e.down)&&this.controlsNext.forEach((e=>{e.classList.add("enabled"),e.removeAttribute("disabled")}));let t=this.Reveal.getCurrentSlide();if(t){let e=this.Reveal.fragments.availableRoutes();e.prev&&this.controlsPrev.forEach((e=>{e.classList.add("fragmented","enabled"),e.removeAttribute("disabled")})),e.next&&this.controlsNext.forEach((e=>{e.classList.add("fragmented","enabled"),e.removeAttribute("disabled")})),this.Reveal.isVerticalSlide(t)?(e.prev&&this.controlsUp.forEach((e=>{e.classList.add("fragmented","enabled"),e.removeAttribute("disabled")})),e.next&&this.controlsDown.forEach((e=>{e.classList.add("fragmented","enabled"),e.removeAttribute("disabled")}))):(e.prev&&this.controlsLeft.forEach((e=>{e.classList.add("fragmented","enabled"),e.removeAttribute("disabled")})),e.next&&this.controlsRight.forEach((e=>{e.classList.add("fragmented","enabled"),e.removeAttribute("disabled")})))}if(this.Reveal.getConfig().controlsTutorial){let t=this.Reveal.getIndices();!this.Reveal.hasNavigatedVertically()&&e.down?this.controlsDownArrow.classList.add("highlight"):(this.controlsDownArrow.classList.remove("highlight"),this.Reveal.getConfig().rtl?!this.Reveal.hasNavigatedHorizontally()&&e.left&&0===t.v?this.controlsLeftArrow.classList.add("highlight"):this.controlsLeftArrow.classList.remove("highlight"):!this.Reveal.hasNavigatedHorizontally()&&e.right&&0===t.v?this.controlsRightArrow.classList.add("highlight"):this.controlsRightArrow.classList.remove("highlight"))}}destroy(){this.unbind(),this.element.remove()}onNavigateLeftClicked(e){e.preventDefault(),this.Reveal.onUserInput(),"linear"===this.Reveal.getConfig().navigationMode?this.Reveal.prev():this.Reveal.left()}onNavigateRightClicked(e){e.preventDefault(),this.Reveal.onUserInput(),"linear"===this.Reveal.getConfig().navigationMode?this.Reveal.next():this.Reveal.right()}onNavigateUpClicked(e){e.preventDefault(),this.Reveal.onUserInput(),this.Reveal.up()}onNavigateDownClicked(e){e.preventDefault(),this.Reveal.onUserInput(),this.Reveal.down()}onNavigatePrevClicked(e){e.preventDefault(),this.Reveal.onUserInput(),this.Reveal.prev()}onNavigateNextClicked(e){e.preventDefault(),this.Reveal.onUserInput(),this.Reveal.next()}onEnterFullscreen(e){const t=this.Reveal.getConfig(),i=this.Reveal.getViewportElement();o(t.embedded?i:i.parentElement)}}class B{constructor(e){this.Reveal=e,this.onProgressClicked=this.onProgressClicked.bind(this)}render(){this.element=document.createElement("div"),this.element.className="progress",this.Reveal.getRevealElement().appendChild(this.element),this.bar=document.createElement("span"),this.element.appendChild(this.bar)}configure(e,t){this.element.style.display=e.progress?"block":"none"}bind(){this.Reveal.getConfig().progress&&this.element&&this.element.addEventListener("click",this.onProgressClicked,!1)}unbind(){this.Reveal.getConfig().progress&&this.element&&this.element.removeEventListener("click",this.onProgressClicked,!1)}update(){if(this.Reveal.getConfig().progress&&this.bar){let e=this.Reveal.getProgress();this.Reveal.getTotalSlides()<2&&(e=0),this.bar.style.transform="scaleX("+e+")"}}getMaxWidth(){return this.Reveal.getRevealElement().offsetWidth}onProgressClicked(e){this.Reveal.onUserInput(e),e.preventDefault();let t=this.Reveal.getSlides(),i=t.length,s=Math.floor(e.clientX/this.getMaxWidth()*i);this.Reveal.getConfig().rtl&&(s=i-s);let a=this.Reveal.getIndices(t[s]);this.Reveal.slide(a.h,a.v)}destroy(){this.element.remove()}}class H{constructor(e){this.Reveal=e,this.lastMouseWheelStep=0,this.cursorHidden=!1,this.cursorInactiveTimeout=0,this.onDocumentCursorActive=this.onDocumentCursorActive.bind(this),this.onDocumentMouseScroll=this.onDocumentMouseScroll.bind(this)}configure(e,t){e.mouseWheel?document.addEventListener("wheel",this.onDocumentMouseScroll,!1):document.removeEventListener("wheel",this.onDocumentMouseScroll,!1),e.hideInactiveCursor?(document.addEventListener("mousemove",this.onDocumentCursorActive,!1),document.addEventListener("mousedown",this.onDocumentCursorActive,!1)):(this.showCursor(),document.removeEventListener("mousemove",this.onDocumentCursorActive,!1),document.removeEventListener("mousedown",this.onDocumentCursorActive,!1))}showCursor(){this.cursorHidden&&(this.cursorHidden=!1,this.Reveal.getRevealElement().style.cursor="")}hideCursor(){!1===this.cursorHidden&&(this.cursorHidden=!0,this.Reveal.getRevealElement().style.cursor="none")}destroy(){this.showCursor(),document.removeEventListener("wheel",this.onDocumentMouseScroll,!1),document.removeEventListener("mousemove",this.onDocumentCursorActive,!1),document.removeEventListener("mousedown",this.onDocumentCursorActive,!1)}onDocumentCursorActive(e){this.showCursor(),clearTimeout(this.cursorInactiveTimeout),this.cursorInactiveTimeout=setTimeout(this.hideCursor.bind(this),this.Reveal.getConfig().hideCursorTime)}onDocumentMouseScroll(e){if(Date.now()-this.lastMouseWheelStep>1e3){this.lastMouseWheelStep=Date.now();let t=e.detail||-e.wheelDelta;t>0?this.Reveal.next():t<0&&this.Reveal.prev()}}}const D=(e,t)=>{const i=document.createElement("script");i.type="text/javascript",i.async=!1,i.defer=!1,i.src=e,"function"==typeof t&&(i.onload=i.onreadystatechange=e=>{("load"===e.type||/loaded|complete/.test(i.readyState))&&(i.onload=i.onreadystatechange=i.onerror=null,t())},i.onerror=e=>{i.onload=i.onreadystatechange=i.onerror=null,t(new Error("Failed loading script: "+i.src+"\n"+e))});const s=document.querySelector("head");s.insertBefore(i,s.lastChild)};class F{constructor(e){this.Reveal=e,this.state="idle",this.registeredPlugins={},this.asyncDependencies=[]}load(e,t){return this.state="loading",e.forEach(this.registerPlugin.bind(this)),new Promise((e=>{let i=[],s=0;if(t.forEach((e=>{e.condition&&!e.condition()||(e.async?this.asyncDependencies.push(e):i.push(e))})),i.length){s=i.length;const t=t=>{t&&"function"==typeof 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window?(e.addEventListener("pointerdown",this.onPointerDown,!1),e.addEventListener("pointermove",this.onPointerMove,!1),e.addEventListener("pointerup",this.onPointerUp,!1)):window.navigator.msPointerEnabled?(e.addEventListener("MSPointerDown",this.onPointerDown,!1),e.addEventListener("MSPointerMove",this.onPointerMove,!1),e.addEventListener("MSPointerUp",this.onPointerUp,!1)):(e.addEventListener("touchstart",this.onTouchStart,!1),e.addEventListener("touchmove",this.onTouchMove,!1),e.addEventListener("touchend",this.onTouchEnd,!1))}unbind(){let e=this.Reveal.getRevealElement();e.removeEventListener("pointerdown",this.onPointerDown,!1),e.removeEventListener("pointermove",this.onPointerMove,!1),e.removeEventListener("pointerup",this.onPointerUp,!1),e.removeEventListener("MSPointerDown",this.onPointerDown,!1),e.removeEventListener("MSPointerMove",this.onPointerMove,!1),e.removeEventListener("MSPointerUp",this.onPointerUp,!1),e.removeEventListener("touchstart",this.onTouchStart,!1),e.removeEventListener("touchmove",this.onTouchMove,!1),e.removeEventListener("touchend",this.onTouchEnd,!1)}isSwipePrevented(e){if(n(e,"video[controls], audio[controls]"))return!0;for(;e&&"function"==typeof e.hasAttribute;){if(e.hasAttribute("data-prevent-swipe"))return!0;e=e.parentNode}return!1}onTouchStart(e){if(this.touchCaptured=!1,this.isSwipePrevented(e.target))return!0;this.touchStartX=e.touches[0].clientX,this.touchStartY=e.touches[0].clientY,this.touchStartCount=e.touches.length}onTouchMove(e){if(this.isSwipePrevented(e.target))return!0;let t=this.Reveal.getConfig();if(this.touchCaptured)g&&e.preventDefault();else{this.Reveal.onUserInput(e);let i=e.touches[0].clientX,s=e.touches[0].clientY;if(1===e.touches.length&&2!==this.touchStartCount){let a=this.Reveal.availableRoutes({includeFragments:!0}),n=i-this.touchStartX,r=s-this.touchStartY;n>40&&Math.abs(n)>Math.abs(r)?(this.touchCaptured=!0,"linear"===t.navigationMode?t.rtl?this.Reveal.next():this.Reveal.prev():this.Reveal.left()):n<-40&&Math.abs(n)>Math.abs(r)?(this.touchCaptured=!0,"linear"===t.navigationMode?t.rtl?this.Reveal.prev():this.Reveal.next():this.Reveal.right()):r>40&&a.up?(this.touchCaptured=!0,"linear"===t.navigationMode?this.Reveal.prev():this.Reveal.up()):r<-40&&a.down&&(this.touchCaptured=!0,"linear"===t.navigationMode?this.Reveal.next():this.Reveal.down()),t.embedded?(this.touchCaptured||this.Reveal.isVerticalSlide())&&e.preventDefault():e.preventDefault()}}}onTouchEnd(e){this.touchCaptured=!1}onPointerDown(e){e.pointerType!==e.MSPOINTER_TYPE_TOUCH&&"touch"!==e.pointerType||(e.touches=[{clientX:e.clientX,clientY:e.clientY}],this.onTouchStart(e))}onPointerMove(e){e.pointerType!==e.MSPOINTER_TYPE_TOUCH&&"touch"!==e.pointerType||(e.touches=[{clientX:e.clientX,clientY:e.clientY}],this.onTouchMove(e))}onPointerUp(e){e.pointerType!==e.MSPOINTER_TYPE_TOUCH&&"touch"!==e.pointerType||(e.touches=[{clientX:e.clientX,clientY:e.clientY}],this.onTouchEnd(e))}}const q="focus",O="blur";class W{constructor(e){this.Reveal=e,this.onRevealPointerDown=this.onRevealPointerDown.bind(this),this.onDocumentPointerDown=this.onDocumentPointerDown.bind(this)}configure(e,t){e.embedded?this.blur():(this.focus(),this.unbind())}bind(){this.Reveal.getConfig().embedded&&this.Reveal.getRevealElement().addEventListener("pointerdown",this.onRevealPointerDown,!1)}unbind(){this.Reveal.getRevealElement().removeEventListener("pointerdown",this.onRevealPointerDown,!1),document.removeEventListener("pointerdown",this.onDocumentPointerDown,!1)}focus(){this.state!==q&&(this.Reveal.getRevealElement().classList.add("focused"),document.addEventListener("pointerdown",this.onDocumentPointerDown,!1)),this.state=q}blur(){this.state!==O&&(this.Reveal.getRevealElement().classList.remove("focused"),document.removeEventListener("pointerdown",this.onDocumentPointerDown,!1)),this.state=O}isFocused(){return this.state===q}destroy(){this.Reveal.getRevealElement().classList.remove("focused")}onRevealPointerDown(e){this.focus()}onDocumentPointerDown(e){let t=r(e.target,".reveal");t&&t===this.Reveal.getRevealElement()||this.blur()}}class U{constructor(e){this.Reveal=e}render(){this.element=document.createElement("div"),this.element.className="speaker-notes",this.element.setAttribute("data-prevent-swipe",""),this.element.setAttribute("tabindex","0"),this.Reveal.getRevealElement().appendChild(this.element)}configure(e,t){e.showNotes&&this.element.setAttribute("data-layout","string"==typeof e.showNotes?e.showNotes:"inline")}update(){this.Reveal.getConfig().showNotes&&this.element&&this.Reveal.getCurrentSlide()&&!this.Reveal.isScrollView()&&!this.Reveal.isPrintView()&&(this.element.innerHTML=this.getSlideNotes()||'No notes on this 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implementation is available\n\tlet requestMethod = element.requestFullscreen ||\n\t\t\t\t\t\telement.webkitRequestFullscreen ||\n\t\t\t\t\t\telement.webkitRequestFullScreen ||\n\t\t\t\t\t\telement.mozRequestFullScreen ||\n\t\t\t\t\t\telement.msRequestFullscreen;\n\n\tif( requestMethod ) {\n\t\trequestMethod.apply( element );\n\t}\n\n}\n\n/**\n * Creates an HTML element and returns a reference to it.\n * If the element already exists the existing instance will\n * be returned.\n *\n * @param {HTMLElement} container\n * @param {string} tagname\n * @param {string} classname\n * @param {string} innerHTML\n *\n * @return {HTMLElement}\n */\nexport const createSingletonNode = ( container, tagname, classname, innerHTML='' ) => {\n\n\t// Find all nodes matching the description\n\tlet nodes = container.querySelectorAll( '.' + classname );\n\n\t// Check all matches to find one which is a direct child of\n\t// the specified container\n\tfor( let i = 0; i < nodes.length; i++ ) {\n\t\tlet testNode = nodes[i];\n\t\tif( testNode.parentNode === container ) {\n\t\t\treturn testNode;\n\t\t}\n\t}\n\n\t// If no node was found, create it now\n\tlet node = document.createElement( tagname );\n\tnode.className = classname;\n\tnode.innerHTML = innerHTML;\n\tcontainer.appendChild( node );\n\n\treturn node;\n\n}\n\n/**\n * Injects the given CSS styles into the DOM.\n *\n * @param {string} value\n */\nexport const createStyleSheet = ( value ) => {\n\n\tlet tag = document.createElement( 'style' );\n\ttag.type = 'text/css';\n\n\tif( value && value.length > 0 ) {\n\t\tif( tag.styleSheet ) {\n\t\t\ttag.styleSheet.cssText = value;\n\t\t}\n\t\telse {\n\t\t\ttag.appendChild( document.createTextNode( value ) );\n\t\t}\n\t}\n\n\tdocument.head.appendChild( tag );\n\n\treturn tag;\n\n}\n\n/**\n * Returns a key:value hash of all query params.\n */\nexport const getQueryHash = () => {\n\n\tlet query = {};\n\n\tlocation.search.replace( /[A-Z0-9]+?=([\\w\\.%-]*)/gi, a => {\n\t\tquery[ a.split( '=' ).shift() 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x(e){var n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};return\"string\"==typeof e?C(t(document.querySelectorAll(e)),n):C([e],n)[0]}}(\"undefined\"==typeof window?null:window);export default e;\n","import { extend, queryAll, closest, getMimeTypeFromFile, encodeRFC3986URI } from '../utils/util.js'\nimport { isMobile } from '../utils/device.js'\n\nimport fitty from 'fitty';\n\n/**\n * Handles loading, unloading and playback of slide\n * content such as images, videos and iframes.\n */\nexport default class SlideContent {\n\n\tconstructor( Reveal ) {\n\n\t\tthis.Reveal = Reveal;\n\n\t\tthis.startEmbeddedIframe = this.startEmbeddedIframe.bind( this );\n\n\t}\n\n\t/**\n\t * Should the given element be preloaded?\n\t * Decides based on local element attributes and global config.\n\t *\n\t * @param {HTMLElement} element\n\t */\n\tshouldPreload( element ) {\n\n\t\tif( this.Reveal.isScrollView() ) {\n\t\t\treturn true;\n\t\t}\n\n\t\t// Prefer an explicit global preload setting\n\t\tlet preload = this.Reveal.getConfig().preloadIframes;\n\n\t\t// If no global setting is available, fall back on the element's\n\t\t// own preload setting\n\t\tif( typeof preload !== 'boolean' ) {\n\t\t\tpreload = element.hasAttribute( 'data-preload' );\n\t\t}\n\n\t\treturn preload;\n\t}\n\n\t/**\n\t * Called when the given slide is within the configured view\n\t * distance. Shows the slide element and loads any content\n\t * that is set to load lazily (data-src).\n\t *\n\t * @param {HTMLElement} slide Slide to show\n\t */\n\tload( slide, options = {} ) {\n\n\t\t// Show the slide element\n\t\tslide.style.display = this.Reveal.getConfig().display;\n\n\t\t// Media elements with data-src attributes\n\t\tqueryAll( slide, 'img[data-src], video[data-src], audio[data-src], iframe[data-src]' ).forEach( element => {\n\t\t\tif( element.tagName !== 'IFRAME' || this.shouldPreload( element ) ) {\n\t\t\t\telement.setAttribute( 'src', element.getAttribute( 'data-src' ) );\n\t\t\t\telement.setAttribute( 'data-lazy-loaded', '' );\n\t\t\t\telement.removeAttribute( 'data-src' );\n\t\t\t}\n\t\t} );\n\n\t\t// Media elements with children\n\t\tqueryAll( slide, 'video, audio' ).forEach( media => {\n\t\t\tlet sources = 0;\n\n\t\t\tqueryAll( media, 'source[data-src]' ).forEach( source => {\n\t\t\t\tsource.setAttribute( 'src', source.getAttribute( 'data-src' ) );\n\t\t\t\tsource.removeAttribute( 'data-src' );\n\t\t\t\tsource.setAttribute( 'data-lazy-loaded', '' );\n\t\t\t\tsources += 1;\n\t\t\t} );\n\n\t\t\t// Enable inline video playback in mobile Safari\n\t\t\tif( isMobile && media.tagName === 'VIDEO' ) {\n\t\t\t\tmedia.setAttribute( 'playsinline', '' );\n\t\t\t}\n\n\t\t\t// If we rewrote sources for this video/audio element, we need\n\t\t\t// to manually tell it to load from its new origin\n\t\t\tif( sources > 0 ) {\n\t\t\t\tmedia.load();\n\t\t\t}\n\t\t} );\n\n\n\t\t// Show the corresponding background element\n\t\tlet background = slide.slideBackgroundElement;\n\t\tif( background ) {\n\t\t\tbackground.style.display = 'block';\n\n\t\t\tlet backgroundContent = slide.slideBackgroundContentElement;\n\t\t\tlet backgroundIframe = slide.getAttribute( 'data-background-iframe' );\n\n\t\t\t// If the background contains media, load it\n\t\t\tif( background.hasAttribute( 'data-loaded' ) === false ) {\n\t\t\t\tbackground.setAttribute( 'data-loaded', 'true' );\n\n\t\t\t\tlet backgroundImage = slide.getAttribute( 'data-background-image' ),\n\t\t\t\t\tbackgroundVideo = slide.getAttribute( 'data-background-video' ),\n\t\t\t\t\tbackgroundVideoLoop = slide.hasAttribute( 'data-background-video-loop' ),\n\t\t\t\t\tbackgroundVideoMuted = slide.hasAttribute( 'data-background-video-muted' );\n\n\t\t\t\t// Images\n\t\t\t\tif( backgroundImage ) {\n\t\t\t\t\t// base64\n\t\t\t\t\tif( /^data:/.test( backgroundImage.trim() ) ) {\n\t\t\t\t\t\tbackgroundContent.style.backgroundImage = `url(${backgroundImage.trim()})`;\n\t\t\t\t\t}\n\t\t\t\t\t// URL(s)\n\t\t\t\t\telse {\n\t\t\t\t\t\tbackgroundContent.style.backgroundImage = backgroundImage.split( ',' ).map( background => {\n\t\t\t\t\t\t\t// Decode URL(s) that are already encoded first\n\t\t\t\t\t\t\tlet decoded = decodeURI(background.trim());\n\t\t\t\t\t\t\treturn `url(${encodeRFC3986URI(decoded)})`;\n\t\t\t\t\t\t}).join( ',' );\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t// Videos\n\t\t\t\telse if ( backgroundVideo && !this.Reveal.isSpeakerNotes() ) {\n\t\t\t\t\tlet video = document.createElement( 'video' );\n\n\t\t\t\t\tif( backgroundVideoLoop ) {\n\t\t\t\t\t\tvideo.setAttribute( 'loop', '' );\n\t\t\t\t\t}\n\n\t\t\t\t\tif( backgroundVideoMuted ) {\n\t\t\t\t\t\tvideo.muted = true;\n\t\t\t\t\t}\n\n\t\t\t\t\t// Enable inline playback in mobile Safari\n\t\t\t\t\t//\n\t\t\t\t\t// Mute is required for video to play when using\n\t\t\t\t\t// swipe gestures to navigate since they don't\n\t\t\t\t\t// count as direct user actions :'(\n\t\t\t\t\tif( isMobile ) {\n\t\t\t\t\t\tvideo.muted = true;\n\t\t\t\t\t\tvideo.setAttribute( 'playsinline', '' );\n\t\t\t\t\t}\n\n\t\t\t\t\t// Support comma separated lists of video sources\n\t\t\t\t\tbackgroundVideo.split( ',' ).forEach( source => {\n\t\t\t\t\t\tconst sourceElement = document.createElement( 'source' );\n\t\t\t\t\t\tsourceElement.setAttribute( 'src', source );\n\n\t\t\t\t\t\tlet type = getMimeTypeFromFile( source );\n\t\t\t\t\t\tif( type ) {\n\t\t\t\t\t\t\tsourceElement.setAttribute( 'type', type );\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tvideo.appendChild( sourceElement );\n\t\t\t\t\t} );\n\n\t\t\t\t\tbackgroundContent.appendChild( video );\n\t\t\t\t}\n\t\t\t\t// Iframes\n\t\t\t\telse if( backgroundIframe && options.excludeIframes !== true ) {\n\t\t\t\t\tlet iframe = document.createElement( 'iframe' );\n\t\t\t\t\tiframe.setAttribute( 'allowfullscreen', '' );\n\t\t\t\t\tiframe.setAttribute( 'mozallowfullscreen', '' );\n\t\t\t\t\tiframe.setAttribute( 'webkitallowfullscreen', '' );\n\t\t\t\t\tiframe.setAttribute( 'allow', 'autoplay' );\n\n\t\t\t\t\tiframe.setAttribute( 'data-src', backgroundIframe );\n\n\t\t\t\t\tiframe.style.width = '100%';\n\t\t\t\t\tiframe.style.height = '100%';\n\t\t\t\t\tiframe.style.maxHeight = '100%';\n\t\t\t\t\tiframe.style.maxWidth = '100%';\n\n\t\t\t\t\tbackgroundContent.appendChild( iframe );\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Start loading preloadable iframes\n\t\t\tlet backgroundIframeElement = backgroundContent.querySelector( 'iframe[data-src]' );\n\t\t\tif( backgroundIframeElement ) {\n\n\t\t\t\t// Check if this iframe is eligible to be preloaded\n\t\t\t\tif( this.shouldPreload( background ) && !/autoplay=(1|true|yes)/gi.test( backgroundIframe ) ) {\n\t\t\t\t\tif( backgroundIframeElement.getAttribute( 'src' ) !== backgroundIframe ) {\n\t\t\t\t\t\tbackgroundIframeElement.setAttribute( 'src', backgroundIframe );\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t\tthis.layout( slide );\n\n\t}\n\n\t/**\n\t * Applies JS-dependent layout helpers for the scope.\n\t */\n\tlayout( scopeElement ) {\n\n\t\t// Autosize text with the r-fit-text class based on the\n\t\t// size of its container. This needs to happen after the\n\t\t// slide is visible in order to measure the text.\n\t\tArray.from( scopeElement.querySelectorAll( '.r-fit-text' ) ).forEach( element => {\n\t\t\tfitty( element, {\n\t\t\t\tminSize: 24,\n\t\t\t\tmaxSize: this.Reveal.getConfig().height * 0.8,\n\t\t\t\tobserveMutations: false,\n\t\t\t\tobserveWindow: false\n\t\t\t} );\n\t\t} );\n\n\t}\n\n\t/**\n\t * Unloads and hides the given slide. This is called when the\n\t * slide is moved outside of the configured view distance.\n\t *\n\t * @param {HTMLElement} slide\n\t */\n\tunload( slide ) {\n\n\t\t// Hide the slide element\n\t\tslide.style.display = 'none';\n\n\t\t// Hide the corresponding background element\n\t\tlet background = this.Reveal.getSlideBackground( slide );\n\t\tif( background ) {\n\t\t\tbackground.style.display = 'none';\n\n\t\t\t// Unload any background iframes\n\t\t\tqueryAll( background, 'iframe[src]' ).forEach( element => {\n\t\t\t\telement.removeAttribute( 'src' );\n\t\t\t} );\n\t\t}\n\n\t\t// Reset lazy-loaded media elements with src attributes\n\t\tqueryAll( slide, 'video[data-lazy-loaded][src], audio[data-lazy-loaded][src], iframe[data-lazy-loaded][src]' ).forEach( element => {\n\t\t\telement.setAttribute( 'data-src', element.getAttribute( 'src' ) );\n\t\t\telement.removeAttribute( 'src' );\n\t\t} );\n\n\t\t// Reset lazy-loaded media elements with children\n\t\tqueryAll( slide, 'video[data-lazy-loaded] source[src], audio source[src]' ).forEach( source => {\n\t\t\tsource.setAttribute( 'data-src', source.getAttribute( 'src' ) );\n\t\t\tsource.removeAttribute( 'src' );\n\t\t} );\n\n\t}\n\n\t/**\n\t * Enforces origin-specific format rules for embedded media.\n\t */\n\tformatEmbeddedContent() {\n\n\t\tlet _appendParamToIframeSource = ( sourceAttribute, sourceURL, param ) => {\n\t\t\tqueryAll( this.Reveal.getSlidesElement(), 'iframe['+ sourceAttribute +'*=\"'+ sourceURL +'\"]' ).forEach( el => {\n\t\t\t\tlet src = el.getAttribute( sourceAttribute );\n\t\t\t\tif( src && src.indexOf( param ) === -1 ) {\n\t\t\t\t\tel.setAttribute( sourceAttribute, src + ( !/\\?/.test( src ) ? '?' : '&' ) + param );\n\t\t\t\t}\n\t\t\t});\n\t\t};\n\n\t\t// YouTube frames must include \"?enablejsapi=1\"\n\t\t_appendParamToIframeSource( 'src', 'youtube.com/embed/', 'enablejsapi=1' );\n\t\t_appendParamToIframeSource( 'data-src', 'youtube.com/embed/', 'enablejsapi=1' );\n\n\t\t// Vimeo frames must include \"?api=1\"\n\t\t_appendParamToIframeSource( 'src', 'player.vimeo.com/', 'api=1' );\n\t\t_appendParamToIframeSource( 'data-src', 'player.vimeo.com/', 'api=1' );\n\n\t}\n\n\t/**\n\t * Start playback of any embedded content inside of\n\t * the given element.\n\t *\n\t * @param {HTMLElement} element\n\t */\n\tstartEmbeddedContent( element ) {\n\n\t\tif( element && !this.Reveal.isSpeakerNotes() ) {\n\n\t\t\t// Restart GIFs\n\t\t\tqueryAll( element, 'img[src$=\".gif\"]' ).forEach( el => {\n\t\t\t\t// Setting the same unchanged source like this was confirmed\n\t\t\t\t// to work in Chrome, FF & Safari\n\t\t\t\tel.setAttribute( 'src', el.getAttribute( 'src' ) );\n\t\t\t} );\n\n\t\t\t// HTML5 media elements\n\t\t\tqueryAll( element, 'video, audio' ).forEach( el => {\n\t\t\t\tif( closest( el, '.fragment' ) && !closest( el, '.fragment.visible' ) ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\t// Prefer an explicit global autoplay setting\n\t\t\t\tlet autoplay = this.Reveal.getConfig().autoPlayMedia;\n\n\t\t\t\t// If no global setting is available, fall back on the element's\n\t\t\t\t// own autoplay setting\n\t\t\t\tif( typeof autoplay !== 'boolean' ) {\n\t\t\t\t\tautoplay = el.hasAttribute( 'data-autoplay' ) || !!closest( el, '.slide-background' );\n\t\t\t\t}\n\n\t\t\t\tif( autoplay && typeof el.play === 'function' ) {\n\n\t\t\t\t\t// If the media is ready, start playback\n\t\t\t\t\tif( el.readyState > 1 ) {\n\t\t\t\t\t\tthis.startEmbeddedMedia( { target: el } );\n\t\t\t\t\t}\n\t\t\t\t\t// Mobile devices never fire a loaded event so instead\n\t\t\t\t\t// of waiting, we initiate playback\n\t\t\t\t\telse if( isMobile ) {\n\t\t\t\t\t\tlet promise = el.play();\n\n\t\t\t\t\t\t// If autoplay does not work, ensure that the controls are visible so\n\t\t\t\t\t\t// that the viewer can start the media on their own\n\t\t\t\t\t\tif( promise && typeof promise.catch === 'function' && el.controls === false ) {\n\t\t\t\t\t\t\tpromise.catch( () => {\n\t\t\t\t\t\t\t\tel.controls = true;\n\n\t\t\t\t\t\t\t\t// Once the video does start playing, hide the controls again\n\t\t\t\t\t\t\t\tel.addEventListener( 'play', () => {\n\t\t\t\t\t\t\t\t\tel.controls = false;\n\t\t\t\t\t\t\t\t} );\n\t\t\t\t\t\t\t} );\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\t// If the media isn't loaded, wait before playing\n\t\t\t\t\telse {\n\t\t\t\t\t\tel.removeEventListener( 'loadeddata', this.startEmbeddedMedia ); // remove first to avoid dupes\n\t\t\t\t\t\tel.addEventListener( 'loadeddata', this.startEmbeddedMedia );\n\t\t\t\t\t}\n\n\t\t\t\t}\n\t\t\t} );\n\n\t\t\t// Normal iframes\n\t\t\tqueryAll( element, 'iframe[src]' ).forEach( el => {\n\t\t\t\tif( closest( el, '.fragment' ) && !closest( el, '.fragment.visible' ) ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\tthis.startEmbeddedIframe( { target: el } );\n\t\t\t} );\n\n\t\t\t// Lazy loading iframes\n\t\t\tqueryAll( element, 'iframe[data-src]' ).forEach( el => {\n\t\t\t\tif( closest( el, '.fragment' ) && !closest( el, '.fragment.visible' ) ) {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\n\t\t\t\tif( el.getAttribute( 'src' ) !== el.getAttribute( 'data-src' ) ) {\n\t\t\t\t\tel.removeEventListener( 'load', this.startEmbeddedIframe ); // remove first to avoid dupes\n\t\t\t\t\tel.addEventListener( 'load', this.startEmbeddedIframe );\n\t\t\t\t\tel.setAttribute( 'src', el.getAttribute( 'data-src' ) );\n\t\t\t\t}\n\t\t\t} );\n\n\t\t}\n\n\t}\n\n\t/**\n\t * Starts playing an embedded video/audio element after\n\t * it has finished loading.\n\t *\n\t * @param {object} event\n\t */\n\tstartEmbeddedMedia( event ) {\n\n\t\tlet isAttachedToDOM = !!closest( event.target, 'html' ),\n\t\t\tisVisible \t\t= !!closest( event.target, '.present' );\n\n\t\tif( isAttachedToDOM && isVisible ) {\n\t\t\t// Don't restart if media is already playing\n\t\t\tif( event.target.paused || event.target.ended ) {\n\t\t\t\tevent.target.currentTime = 0;\n\t\t\t\tevent.target.play();\n\t\t\t}\n\t\t}\n\n\t\tevent.target.removeEventListener( 'loadeddata', this.startEmbeddedMedia );\n\n\t}\n\n\t/**\n\t * \"Starts\" the content of an embedded iframe using the\n\t * postMessage API.\n\t *\n\t * @param {object} event\n\t */\n\tstartEmbeddedIframe( event ) {\n\n\t\tlet iframe = event.target;\n\n\t\tif( iframe && iframe.contentWindow ) {\n\n\t\t\tlet isAttachedToDOM = !!closest( event.target, 'html' ),\n\t\t\t\tisVisible \t\t= !!closest( event.target, '.present' );\n\n\t\t\tif( isAttachedToDOM && isVisible ) {\n\n\t\t\t\t// Prefer an explicit global autoplay setting\n\t\t\t\tlet autoplay = this.Reveal.getConfig().autoPlayMedia;\n\n\t\t\t\t// If no global setting is available, fall back on the element's\n\t\t\t\t// own autoplay setting\n\t\t\t\tif( typeof autoplay !== 'boolean' ) {\n\t\t\t\t\tautoplay = iframe.hasAttribute( 'data-autoplay' ) || !!closest( iframe, '.slide-background' );\n\t\t\t\t}\n\n\t\t\t\t// YouTube postMessage API\n\t\t\t\tif( /youtube\\.com\\/embed\\//.test( iframe.getAttribute( 'src' ) ) && autoplay ) {\n\t\t\t\t\tiframe.contentWindow.postMessage( '{\"event\":\"command\",\"func\":\"playVideo\",\"args\":\"\"}', '*' );\n\t\t\t\t}\n\t\t\t\t// Vimeo postMessage API\n\t\t\t\telse if( /player\\.vimeo\\.com\\//.test( iframe.getAttribute( 'src' ) ) && autoplay ) {\n\t\t\t\t\tiframe.contentWindow.postMessage( '{\"method\":\"play\"}', '*' );\n\t\t\t\t}\n\t\t\t\t// Generic postMessage API\n\t\t\t\telse {\n\t\t\t\t\tiframe.contentWindow.postMessage( 'slide:start', '*' );\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t}\n\n\t}\n\n\t/**\n\t * Stop playback of any embedded content inside of\n\t * the targeted slide.\n\t *\n\t * @param {HTMLElement} element\n\t */\n\tstopEmbeddedContent( element, options = {} ) {\n\n\t\toptions = extend( {\n\t\t\t// Defaults\n\t\t\tunloadIframes: true\n\t\t}, options );\n\n\t\tif( element && element.parentNode ) {\n\t\t\t// HTML5 media elements\n\t\t\tqueryAll( element, 'video, audio' ).forEach( el => {\n\t\t\t\tif( !el.hasAttribute( 'data-ignore' ) && typeof el.pause === 'function' ) {\n\t\t\t\t\tel.setAttribute('data-paused-by-reveal', '');\n\t\t\t\t\tel.pause();\n\t\t\t\t}\n\t\t\t} );\n\n\t\t\t// Generic postMessage API for non-lazy loaded iframes\n\t\t\tqueryAll( element, 'iframe' ).forEach( el => {\n\t\t\t\tif( el.contentWindow ) el.contentWindow.postMessage( 'slide:stop', '*' );\n\t\t\t\tel.removeEventListener( 'load', this.startEmbeddedIframe );\n\t\t\t});\n\n\t\t\t// YouTube postMessage API\n\t\t\tqueryAll( element, 'iframe[src*=\"youtube.com/embed/\"]' ).forEach( el => {\n\t\t\t\tif( !el.hasAttribute( 'data-ignore' ) && el.contentWindow && typeof el.contentWindow.postMessage === 'function' ) {\n\t\t\t\t\tel.contentWindow.postMessage( '{\"event\":\"command\",\"func\":\"pauseVideo\",\"args\":\"\"}', '*' );\n\t\t\t\t}\n\t\t\t});\n\n\t\t\t// Vimeo postMessage API\n\t\t\tqueryAll( element, 'iframe[src*=\"player.vimeo.com/\"]' ).forEach( el => {\n\t\t\t\tif( !el.hasAttribute( 'data-ignore' ) && el.contentWindow && typeof el.contentWindow.postMessage === 'function' ) {\n\t\t\t\t\tel.contentWindow.postMessage( '{\"method\":\"pause\"}', '*' );\n\t\t\t\t}\n\t\t\t});\n\n\t\t\tif( options.unloadIframes === true ) {\n\t\t\t\t// Unload lazy-loaded iframes\n\t\t\t\tqueryAll( element, 'iframe[data-src]' ).forEach( el => {\n\t\t\t\t\t// Only removing the src doesn't actually unload the frame\n\t\t\t\t\t// in all browsers (Firefox) so we set it to blank first\n\t\t\t\t\tel.setAttribute( 'src', 'about:blank' );\n\t\t\t\t\tel.removeAttribute( 'src' );\n\t\t\t\t} );\n\t\t\t}\n\t\t}\n\n\t}\n\n}\n","\nexport const SLIDES_SELECTOR = '.slides section';\nexport const HORIZONTAL_SLIDES_SELECTOR = '.slides>section';\nexport const VERTICAL_SLIDES_SELECTOR = '.slides>section.present>section';\nexport const HORIZONTAL_BACKGROUNDS_SELECTOR = '.backgrounds>.slide-background';\n\n// Methods that may not be invoked via the postMessage API\nexport const POST_MESSAGE_METHOD_BLACKLIST = /registerPlugin|registerKeyboardShortcut|addKeyBinding|addEventListener|showPreview/;\n\n// Regex for retrieving the fragment style from a class attribute\nexport const FRAGMENT_STYLE_REGEX = /fade-(down|up|right|left|out|in-then-out|in-then-semi-out)|semi-fade-out|current-visible|shrink|grow/;\n\n// Slide number formats\nexport const SLIDE_NUMBER_FORMAT_HORIZONTAL_DOT_VERTICAL = 'h.v';\nexport const SLIDE_NUMBER_FORMAT_HORIZONTAL_SLASH_VERTICAL = 'h/v';\nexport const SLIDE_NUMBER_FORMAT_CURRENT = 'c';\nexport const SLIDE_NUMBER_FORMAT_CURRENT_SLASH_TOTAL = 'c/t';","import {\n\tSLIDE_NUMBER_FORMAT_CURRENT,\n\tSLIDE_NUMBER_FORMAT_CURRENT_SLASH_TOTAL,\n\tSLIDE_NUMBER_FORMAT_HORIZONTAL_DOT_VERTICAL,\n\tSLIDE_NUMBER_FORMAT_HORIZONTAL_SLASH_VERTICAL\n} from \"../utils/constants\";\n\n/**\n * Handles the display of reveal.js' optional slide number.\n */\nexport default class SlideNumber {\n\n\tconstructor( Reveal ) {\n\n\t\tthis.Reveal = Reveal;\n\n\t}\n\n\trender() {\n\n\t\tthis.element = document.createElement( 'div' );\n\t\tthis.element.className = 'slide-number';\n\t\tthis.Reveal.getRevealElement().appendChild( this.element );\n\n\t}\n\n\t/**\n\t * Called when the reveal.js config is updated.\n\t */\n\tconfigure( config, oldConfig ) {\n\n\t\tlet slideNumberDisplay = 'none';\n\t\tif( config.slideNumber && !this.Reveal.isPrintView() ) {\n\t\t\tif( config.showSlideNumber === 'all' ) {\n\t\t\t\tslideNumberDisplay = 'block';\n\t\t\t}\n\t\t\telse if( config.showSlideNumber === 'speaker' && this.Reveal.isSpeakerNotes() ) {\n\t\t\t\tslideNumberDisplay = 'block';\n\t\t\t}\n\t\t}\n\n\t\tthis.element.style.display = slideNumberDisplay;\n\n\t}\n\n\t/**\n\t * Updates the slide number to match the current slide.\n\t */\n\tupdate() {\n\n\t\t// Update slide number if enabled\n\t\tif( this.Reveal.getConfig().slideNumber && this.element ) {\n\t\t\tthis.element.innerHTML = this.getSlideNumber();\n\t\t}\n\n\t}\n\n\t/**\n\t * Returns the HTML string corresponding to the current slide\n\t * number, including formatting.\n\t */\n\tgetSlideNumber( slide = this.Reveal.getCurrentSlide() ) {\n\n\t\tlet config = this.Reveal.getConfig();\n\t\tlet value;\n\t\tlet format = SLIDE_NUMBER_FORMAT_HORIZONTAL_DOT_VERTICAL;\n\n\t\tif ( typeof config.slideNumber === 'function' ) {\n\t\t\tvalue = config.slideNumber( slide );\n\t\t} else {\n\t\t\t// Check if a custom number format is available\n\t\t\tif( typeof config.slideNumber === 'string' ) {\n\t\t\t\tformat = config.slideNumber;\n\t\t\t}\n\n\t\t\t// If there are ONLY vertical slides in this deck, always use\n\t\t\t// a flattened slide number\n\t\t\tif( !/c/.test( format ) && this.Reveal.getHorizontalSlides().length === 1 ) {\n\t\t\t\tformat = SLIDE_NUMBER_FORMAT_CURRENT;\n\t\t\t}\n\n\t\t\t// Offset the current slide number by 1 to make it 1-indexed\n\t\t\tlet horizontalOffset = slide && slide.dataset.visibility === 'uncounted' ? 0 : 1;\n\n\t\t\tvalue = [];\n\t\t\tswitch( format ) {\n\t\t\t\tcase SLIDE_NUMBER_FORMAT_CURRENT:\n\t\t\t\t\tvalue.push( this.Reveal.getSlidePastCount( slide ) + horizontalOffset );\n\t\t\t\t\tbreak;\n\t\t\t\tcase SLIDE_NUMBER_FORMAT_CURRENT_SLASH_TOTAL:\n\t\t\t\t\tvalue.push( this.Reveal.getSlidePastCount( slide ) + horizontalOffset, '/', this.Reveal.getTotalSlides() );\n\t\t\t\t\tbreak;\n\t\t\t\tdefault:\n\t\t\t\t\tlet indices = this.Reveal.getIndices( slide );\n\t\t\t\t\tvalue.push( indices.h + horizontalOffset );\n\t\t\t\t\tlet sep = format === SLIDE_NUMBER_FORMAT_HORIZONTAL_SLASH_VERTICAL ? '/' : '.';\n\t\t\t\t\tif( this.Reveal.isVerticalSlide( slide ) ) value.push( sep, indices.v + 1 );\n\t\t\t}\n\t\t}\n\n\t\tlet url = '#' + this.Reveal.location.getHash( slide );\n\t\treturn this.formatNumber( value[0], value[1], value[2], url );\n\n\t}\n\n\t/**\n\t * Applies HTML formatting to a slide number before it's\n\t * written to the DOM.\n\t *\n\t * @param {number} a Current slide\n\t * @param {string} delimiter Character to separate slide numbers\n\t * @param {(number|*)} b Total slides\n\t * @param {HTMLElement} [url='#'+locationHash()] The url to link to\n\t * @return {string} HTML string fragment\n\t */\n\tformatNumber( a, delimiter, b, url = '#' + this.Reveal.location.getHash() ) {\n\n\t\tif( typeof b === 'number' && !isNaN( b ) ) {\n\t\t\treturn `\n\t\t\t\t\t${a}\n\t\t\t\t\t${delimiter}\n\t\t\t\t\t${b}\n\t\t\t\t\t`;\n\t\t}\n\t\telse {\n\t\t\treturn `\n\t\t\t\t\t${a}\n\t\t\t\t\t`;\n\t\t}\n\n\t}\n\n\tdestroy() {\n\n\t\tthis.element.remove();\n\n\t}\n\n}","import {\n\tSLIDE_NUMBER_FORMAT_CURRENT,\n\tSLIDE_NUMBER_FORMAT_CURRENT_SLASH_TOTAL\n} from \"../utils/constants\";\n\n/**\n * Makes it possible to jump to a slide by entering its\n * slide number or id.\n */\nexport default class JumpToSlide {\n\n\tconstructor( Reveal ) {\n\n\t\tthis.Reveal = Reveal;\n\n\t\tthis.onInput = this.onInput.bind( this );\n\t\tthis.onBlur = this.onBlur.bind( this );\n\t\tthis.onKeyDown = this.onKeyDown.bind( this );\n\n\t}\n\n\trender() {\n\n\t\tthis.element = document.createElement( 'div' );\n\t\tthis.element.className = 'jump-to-slide';\n\n this.jumpInput = document.createElement( 'input' );\n this.jumpInput.type = 'text';\n this.jumpInput.className = 'jump-to-slide-input';\n this.jumpInput.placeholder = 'Jump to slide';\n\t\tthis.jumpInput.addEventListener( 'input', this.onInput );\n\t\tthis.jumpInput.addEventListener( 'keydown', this.onKeyDown );\n\t\tthis.jumpInput.addEventListener( 'blur', this.onBlur );\n\n this.element.appendChild( this.jumpInput );\n\n\t}\n\n\tshow() {\n\n\t\tthis.indicesOnShow = this.Reveal.getIndices();\n\n\t\tthis.Reveal.getRevealElement().appendChild( this.element );\n\t\tthis.jumpInput.focus();\n\n\t}\n\n\thide() {\n\n\t\tif( this.isVisible() ) {\n\t\t\tthis.element.remove();\n\t\t\tthis.jumpInput.value = '';\n\n\t\t\tclearTimeout( this.jumpTimeout );\n\t\t\tdelete this.jumpTimeout;\n\t\t}\n\n\t}\n\n\tisVisible() {\n\n\t\treturn !!this.element.parentNode;\n\n\t}\n\n\t/**\n\t * Parses the current input and jumps to the given slide.\n\t */\n\tjump() {\n\n\t\tclearTimeout( this.jumpTimeout );\n\t\tdelete this.jumpTimeout;\n\n\t\tlet query = this.jumpInput.value.trim( '' );\n\t\tlet indices;\n\n\t\t// When slide numbers are formatted to be a single linear mumber\n\t\t// (instead of showing a separate horizontal/vertical index) we\n\t\t// use the same format for slide jumps\n\t\tif( /^\\d+$/.test( query ) ) {\n\t\t\tconst slideNumberFormat = this.Reveal.getConfig().slideNumber;\n\t\t\tif( slideNumberFormat === SLIDE_NUMBER_FORMAT_CURRENT || slideNumberFormat === SLIDE_NUMBER_FORMAT_CURRENT_SLASH_TOTAL ) {\n\t\t\t\tconst slide = this.Reveal.getSlides()[ parseInt( query, 10 ) - 1 ];\n\t\t\t\tif( slide ) {\n\t\t\t\t\tindices = this.Reveal.getIndices( slide );\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tif( !indices ) {\n\t\t\t// If the query uses \"horizontal.vertical\" format, convert to\n\t\t\t// \"horizontal/vertical\" so that our URL parser can understand\n\t\t\tif( /^\\d+\\.\\d+$/.test( query ) ) {\n\t\t\t\tquery = query.replace( '.', '/' );\n\t\t\t}\n\n\t\t\tindices = this.Reveal.location.getIndicesFromHash( query, { oneBasedIndex: true } );\n\t\t}\n\n\t\t// Still no valid index? Fall back on a text search\n\t\tif( !indices && /\\S+/i.test( query ) && query.length > 1 ) {\n\t\t\tindices = this.search( query );\n\t\t}\n\n\t\tif( indices && query !== '' ) {\n\t\t\tthis.Reveal.slide( indices.h, indices.v, indices.f );\n\t\t\treturn true;\n\t\t}\n\t\telse {\n\t\t\tthis.Reveal.slide( this.indicesOnShow.h, this.indicesOnShow.v, this.indicesOnShow.f );\n\t\t\treturn false;\n\t\t}\n\n\t}\n\n\tjumpAfter( delay ) {\n\n\t\tclearTimeout( this.jumpTimeout );\n\t\tthis.jumpTimeout = setTimeout( () => this.jump(), delay );\n\n\t}\n\n\t/**\n\t * A lofi search that looks for the given query in all\n\t * of our slides and returns the first match.\n\t */\n\tsearch( query ) {\n\n\t\tconst regex = new RegExp( '\\\\b' + query.trim() + '\\\\b', 'i' );\n\n\t\tconst slide = this.Reveal.getSlides().find( ( slide ) => {\n\t\t\treturn regex.test( slide.innerText );\n\t\t} );\n\n\t\tif( slide ) {\n\t\t\treturn this.Reveal.getIndices( slide );\n\t\t}\n\t\telse {\n\t\t\treturn null;\n\t\t}\n\n\t}\n\n\t/**\n\t * Reverts back to the slide we were on when jump to slide was\n\t * invoked.\n\t */\n\tcancel() {\n\n\t\tthis.Reveal.slide( this.indicesOnShow.h, this.indicesOnShow.v, this.indicesOnShow.f );\n\t\tthis.hide();\n\n\t}\n\n\tconfirm() {\n\n\t\tthis.jump();\n\t\tthis.hide();\n\n\t}\n\n\tdestroy() {\n\n\t\tthis.jumpInput.removeEventListener( 'input', this.onInput );\n\t\tthis.jumpInput.removeEventListener( 'keydown', this.onKeyDown );\n\t\tthis.jumpInput.removeEventListener( 'blur', this.onBlur );\n\n\t\tthis.element.remove();\n\n\t}\n\n\tonKeyDown( event ) {\n\n\t\tif( event.keyCode === 13 ) {\n\t\t\tthis.confirm();\n\t\t}\n\t\telse if( event.keyCode === 27 ) {\n\t\t\tthis.cancel();\n\n\t\t\tevent.stopImmediatePropagation();\n\t\t}\n\n\t}\n\n\tonInput( event ) {\n\n\t\tthis.jumpAfter( 200 );\n\n\t}\n\n\tonBlur() {\n\n\t\tsetTimeout( () => this.hide(), 1 );\n\n\t}\n\n}","/**\n * Converts various color input formats to an {r:0,g:0,b:0} object.\n *\n * @param {string} color The string representation of a color\n * @example\n * colorToRgb('#000');\n * @example\n * colorToRgb('#000000');\n * @example\n * colorToRgb('rgb(0,0,0)');\n * @example\n * colorToRgb('rgba(0,0,0)');\n *\n * @return {{r: number, g: number, b: number, [a]: number}|null}\n */\nexport const colorToRgb = ( color ) => {\n\n\tlet hex3 = color.match( /^#([0-9a-f]{3})$/i );\n\tif( hex3 && hex3[1] ) {\n\t\thex3 = hex3[1];\n\t\treturn {\n\t\t\tr: parseInt( hex3.charAt( 0 ), 16 ) * 0x11,\n\t\t\tg: parseInt( hex3.charAt( 1 ), 16 ) * 0x11,\n\t\t\tb: parseInt( hex3.charAt( 2 ), 16 ) * 0x11\n\t\t};\n\t}\n\n\tlet hex6 = color.match( /^#([0-9a-f]{6})$/i );\n\tif( hex6 && hex6[1] ) {\n\t\thex6 = hex6[1];\n\t\treturn {\n\t\t\tr: parseInt( hex6.slice( 0, 2 ), 16 ),\n\t\t\tg: parseInt( hex6.slice( 2, 4 ), 16 ),\n\t\t\tb: parseInt( hex6.slice( 4, 6 ), 16 )\n\t\t};\n\t}\n\n\tlet rgb = color.match( /^rgb\\s*\\(\\s*(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*(\\d+)\\s*\\)$/i );\n\tif( rgb ) {\n\t\treturn {\n\t\t\tr: parseInt( rgb[1], 10 ),\n\t\t\tg: parseInt( rgb[2], 10 ),\n\t\t\tb: parseInt( rgb[3], 10 )\n\t\t};\n\t}\n\n\tlet rgba = color.match( /^rgba\\s*\\(\\s*(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*(\\d+)\\s*\\,\\s*([\\d]+|[\\d]*.[\\d]+)\\s*\\)$/i );\n\tif( rgba ) {\n\t\treturn {\n\t\t\tr: parseInt( rgba[1], 10 ),\n\t\t\tg: parseInt( rgba[2], 10 ),\n\t\t\tb: parseInt( rgba[3], 10 ),\n\t\t\ta: parseFloat( rgba[4] )\n\t\t};\n\t}\n\n\treturn null;\n\n}\n\n/**\n * Calculates brightness on a scale of 0-255.\n *\n * @param {string} color See colorToRgb for supported formats.\n * @see {@link colorToRgb}\n */\nexport const colorBrightness = ( color ) => {\n\n\tif( typeof color === 'string' ) color = colorToRgb( color );\n\n\tif( color ) {\n\t\treturn ( color.r * 299 + color.g * 587 + color.b * 114 ) / 1000;\n\t}\n\n\treturn null;\n\n}","import { queryAll } from '../utils/util.js'\nimport { colorToRgb, colorBrightness } from '../utils/color.js'\n\n/**\n * Creates and updates slide backgrounds.\n */\nexport default class Backgrounds {\n\n\tconstructor( Reveal ) {\n\n\t\tthis.Reveal = Reveal;\n\n\t}\n\n\trender() {\n\n\t\tthis.element = document.createElement( 'div' );\n\t\tthis.element.className = 'backgrounds';\n\t\tthis.Reveal.getRevealElement().appendChild( this.element );\n\n\t}\n\n\t/**\n\t * Creates the slide background elements and appends them\n\t * to the background container. One element is created per\n\t * slide no matter if the given slide has visible background.\n\t */\n\tcreate() {\n\n\t\t// Clear prior backgrounds\n\t\tthis.element.innerHTML = '';\n\t\tthis.element.classList.add( 'no-transition' );\n\n\t\t// Iterate over all horizontal slides\n\t\tthis.Reveal.getHorizontalSlides().forEach( slideh => {\n\n\t\t\tlet backgroundStack = this.createBackground( slideh, this.element );\n\n\t\t\t// Iterate over all vertical slides\n\t\t\tqueryAll( slideh, 'section' ).forEach( slidev => {\n\n\t\t\t\tthis.createBackground( slidev, backgroundStack );\n\n\t\t\t\tbackgroundStack.classList.add( 'stack' );\n\n\t\t\t} );\n\n\t\t} );\n\n\t\t// Add parallax background if specified\n\t\tif( this.Reveal.getConfig().parallaxBackgroundImage ) {\n\n\t\t\tthis.element.style.backgroundImage = 'url(\"' + this.Reveal.getConfig().parallaxBackgroundImage + '\")';\n\t\t\tthis.element.style.backgroundSize = this.Reveal.getConfig().parallaxBackgroundSize;\n\t\t\tthis.element.style.backgroundRepeat = this.Reveal.getConfig().parallaxBackgroundRepeat;\n\t\t\tthis.element.style.backgroundPosition = this.Reveal.getConfig().parallaxBackgroundPosition;\n\n\t\t\t// Make sure the below properties are set on the element - these properties are\n\t\t\t// needed for proper transitions to be set on the element via CSS. To remove\n\t\t\t// annoying background slide-in effect when the presentation starts, apply\n\t\t\t// these properties after short time delay\n\t\t\tsetTimeout( () => {\n\t\t\t\tthis.Reveal.getRevealElement().classList.add( 'has-parallax-background' );\n\t\t\t}, 1 );\n\n\t\t}\n\t\telse {\n\n\t\t\tthis.element.style.backgroundImage = '';\n\t\t\tthis.Reveal.getRevealElement().classList.remove( 'has-parallax-background' );\n\n\t\t}\n\n\t}\n\n\t/**\n\t * Creates a background for the given slide.\n\t *\n\t * @param {HTMLElement} slide\n\t * @param {HTMLElement} container The element that the background\n\t * should be appended to\n\t * @return {HTMLElement} New background div\n\t */\n\tcreateBackground( slide, container ) {\n\n\t\t// Main slide background element\n\t\tlet element = document.createElement( 'div' );\n\t\telement.className = 'slide-background ' + slide.className.replace( /present|past|future/, '' );\n\n\t\t// Inner background element that wraps images/videos/iframes\n\t\tlet contentElement = document.createElement( 'div' );\n\t\tcontentElement.className = 'slide-background-content';\n\n\t\telement.appendChild( contentElement );\n\t\tcontainer.appendChild( element );\n\n\t\tslide.slideBackgroundElement = element;\n\t\tslide.slideBackgroundContentElement = contentElement;\n\n\t\t// Syncs the background to reflect all current background settings\n\t\tthis.sync( slide );\n\n\t\treturn element;\n\n\t}\n\n\t/**\n\t * Renders all of the visual properties of a slide background\n\t * based on the various background attributes.\n\t *\n\t * @param {HTMLElement} slide\n\t */\n\tsync( slide ) {\n\n\t\tconst element = slide.slideBackgroundElement,\n\t\t\tcontentElement = slide.slideBackgroundContentElement;\n\n\t\tconst data = {\n\t\t\tbackground: slide.getAttribute( 'data-background' ),\n\t\t\tbackgroundSize: slide.getAttribute( 'data-background-size' ),\n\t\t\tbackgroundImage: slide.getAttribute( 'data-background-image' ),\n\t\t\tbackgroundVideo: slide.getAttribute( 'data-background-video' ),\n\t\t\tbackgroundIframe: slide.getAttribute( 'data-background-iframe' ),\n\t\t\tbackgroundColor: slide.getAttribute( 'data-background-color' ),\n\t\t\tbackgroundGradient: slide.getAttribute( 'data-background-gradient' ),\n\t\t\tbackgroundRepeat: slide.getAttribute( 'data-background-repeat' ),\n\t\t\tbackgroundPosition: slide.getAttribute( 'data-background-position' ),\n\t\t\tbackgroundTransition: slide.getAttribute( 'data-background-transition' ),\n\t\t\tbackgroundOpacity: slide.getAttribute( 'data-background-opacity' ),\n\t\t};\n\n\t\tconst dataPreload = slide.hasAttribute( 'data-preload' );\n\n\t\t// Reset the prior background state in case this is not the\n\t\t// initial sync\n\t\tslide.classList.remove( 'has-dark-background' );\n\t\tslide.classList.remove( 'has-light-background' );\n\n\t\telement.removeAttribute( 'data-loaded' );\n\t\telement.removeAttribute( 'data-background-hash' );\n\t\telement.removeAttribute( 'data-background-size' );\n\t\telement.removeAttribute( 'data-background-transition' );\n\t\telement.style.backgroundColor = '';\n\n\t\tcontentElement.style.backgroundSize = '';\n\t\tcontentElement.style.backgroundRepeat = '';\n\t\tcontentElement.style.backgroundPosition = '';\n\t\tcontentElement.style.backgroundImage = '';\n\t\tcontentElement.style.opacity = '';\n\t\tcontentElement.innerHTML = '';\n\n\t\tif( data.background ) {\n\t\t\t// Auto-wrap image urls in url(...)\n\t\t\tif( /^(http|file|\\/\\/)/gi.test( data.background ) || /\\.(svg|png|jpg|jpeg|gif|bmp|webp)([?#\\s]|$)/gi.test( data.background ) ) {\n\t\t\t\tslide.setAttribute( 'data-background-image', data.background );\n\t\t\t}\n\t\t\telse {\n\t\t\t\telement.style.background = data.background;\n\t\t\t}\n\t\t}\n\n\t\t// Create a hash for this combination of background settings.\n\t\t// This is used to determine when two slide backgrounds are\n\t\t// the same.\n\t\tif( data.background || data.backgroundColor || data.backgroundGradient || data.backgroundImage || data.backgroundVideo || data.backgroundIframe ) {\n\t\t\telement.setAttribute( 'data-background-hash', data.background +\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata.backgroundSize +\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata.backgroundImage +\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata.backgroundVideo +\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata.backgroundIframe +\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata.backgroundColor +\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata.backgroundGradient +\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata.backgroundRepeat +\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata.backgroundPosition +\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata.backgroundTransition +\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata.backgroundOpacity );\n\t\t}\n\n\t\t// Additional and optional background properties\n\t\tif( data.backgroundSize ) element.setAttribute( 'data-background-size', data.backgroundSize );\n\t\tif( data.backgroundColor ) element.style.backgroundColor = data.backgroundColor;\n\t\tif( data.backgroundGradient ) element.style.backgroundImage = data.backgroundGradient;\n\t\tif( data.backgroundTransition ) element.setAttribute( 'data-background-transition', data.backgroundTransition );\n\n\t\tif( dataPreload ) element.setAttribute( 'data-preload', '' );\n\n\t\t// Background image options are set on the content wrapper\n\t\tif( data.backgroundSize ) contentElement.style.backgroundSize = data.backgroundSize;\n\t\tif( data.backgroundRepeat ) contentElement.style.backgroundRepeat = data.backgroundRepeat;\n\t\tif( data.backgroundPosition ) contentElement.style.backgroundPosition = data.backgroundPosition;\n\t\tif( data.backgroundOpacity ) contentElement.style.opacity = data.backgroundOpacity;\n\n\t\tconst contrastClass = this.getContrastClass( slide );\n\n\t\tif( typeof contrastClass === 'string' ) {\n\t\t\tslide.classList.add( contrastClass );\n\t\t}\n\n\t}\n\n\t/**\n\t * Returns a class name that can be applied to a slide to indicate\n\t * if it has a light or dark background.\n\t *\n\t * @param {*} slide\n\t *\n\t * @returns {string|null}\n\t */\n\tgetContrastClass( slide ) {\n\n\t\tconst element = slide.slideBackgroundElement;\n\n\t\t// If this slide has a background color, we add a class that\n\t\t// signals if it is light or dark. If the slide has no background\n\t\t// color, no class will be added\n\t\tlet contrastColor = slide.getAttribute( 'data-background-color' );\n\n\t\t// If no bg color was found, or it cannot be converted by colorToRgb, check the computed background\n\t\tif( !contrastColor || !colorToRgb( contrastColor ) ) {\n\t\t\tlet computedBackgroundStyle = window.getComputedStyle( element );\n\t\t\tif( computedBackgroundStyle && computedBackgroundStyle.backgroundColor ) {\n\t\t\t\tcontrastColor = computedBackgroundStyle.backgroundColor;\n\t\t\t}\n\t\t}\n\n\t\tif( contrastColor ) {\n\t\t\tconst rgb = colorToRgb( contrastColor );\n\n\t\t\t// Ignore fully transparent backgrounds. Some browsers return\n\t\t\t// rgba(0,0,0,0) when reading the computed background color of\n\t\t\t// an element with no background\n\t\t\tif( rgb && rgb.a !== 0 ) {\n\t\t\t\tif( colorBrightness( contrastColor ) < 128 ) {\n\t\t\t\t\treturn 'has-dark-background';\n\t\t\t\t}\n\t\t\t\telse {\n\t\t\t\t\treturn 'has-light-background';\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn null;\n\n\t}\n\n\t/**\n\t * Bubble the 'has-light-background'/'has-dark-background' classes.\n\t */\n\tbubbleSlideContrastClassToElement( slide, target ) {\n\n\t\t[ 'has-light-background', 'has-dark-background' ].forEach( classToBubble => {\n\t\t\tif( slide.classList.contains( classToBubble ) ) {\n\t\t\t\ttarget.classList.add( classToBubble );\n\t\t\t}\n\t\t\telse {\n\t\t\t\ttarget.classList.remove( classToBubble );\n\t\t\t}\n\t\t}, this );\n\n\t}\n\n\t/**\n\t * Updates the background elements to reflect the current\n\t * slide.\n\t *\n\t * @param {boolean} includeAll If true, the backgrounds of\n\t * all vertical slides (not just the present) will be updated.\n\t */\n\tupdate( includeAll = false ) {\n\n\t\tlet config = this.Reveal.getConfig();\n\t\tlet currentSlide = this.Reveal.getCurrentSlide();\n\t\tlet indices = this.Reveal.getIndices();\n\n\t\tlet currentBackground = null;\n\n\t\t// Reverse past/future classes when in RTL mode\n\t\tlet horizontalPast = config.rtl ? 'future' : 'past',\n\t\t\thorizontalFuture = config.rtl ? 'past' : 'future';\n\n\t\t// Update the classes of all backgrounds to match the\n\t\t// states of their slides (past/present/future)\n\t\tArray.from( this.element.childNodes ).forEach( ( backgroundh, h ) => {\n\n\t\t\tbackgroundh.classList.remove( 'past', 'present', 'future' );\n\n\t\t\tif( h < indices.h ) {\n\t\t\t\tbackgroundh.classList.add( horizontalPast );\n\t\t\t}\n\t\t\telse if ( h > indices.h ) {\n\t\t\t\tbackgroundh.classList.add( horizontalFuture );\n\t\t\t}\n\t\t\telse {\n\t\t\t\tbackgroundh.classList.add( 'present' );\n\n\t\t\t\t// Store a reference to the current background element\n\t\t\t\tcurrentBackground = backgroundh;\n\t\t\t}\n\n\t\t\tif( includeAll || h === indices.h ) {\n\t\t\t\tqueryAll( backgroundh, '.slide-background' ).forEach( ( backgroundv, v ) => {\n\n\t\t\t\t\tbackgroundv.classList.remove( 'past', 'present', 'future' );\n\n\t\t\t\t\tconst indexv = typeof indices.v === 'number' ? indices.v : 0;\n\n\t\t\t\t\tif( v < indexv ) {\n\t\t\t\t\t\tbackgroundv.classList.add( 'past' );\n\t\t\t\t\t}\n\t\t\t\t\telse if ( v > indexv ) {\n\t\t\t\t\t\tbackgroundv.classList.add( 'future' );\n\t\t\t\t\t}\n\t\t\t\t\telse {\n\t\t\t\t\t\tbackgroundv.classList.add( 'present' );\n\n\t\t\t\t\t\t// Only if this is the present horizontal and vertical slide\n\t\t\t\t\t\tif( h === indices.h ) currentBackground = backgroundv;\n\t\t\t\t\t}\n\n\t\t\t\t} );\n\t\t\t}\n\n\t\t} );\n\n\t\t// The previous background may refer to a DOM element that has\n\t\t// been removed after a presentation is synced & bgs are recreated\n\t\tif( this.previousBackground && !this.previousBackground.closest( 'body' ) ) {\n\t\t\tthis.previousBackground = null;\n\t\t}\n\n\t\tif( currentBackground && this.previousBackground ) {\n\n\t\t\t// Don't transition between identical backgrounds. This\n\t\t\t// prevents unwanted flicker.\n\t\t\tlet previousBackgroundHash = this.previousBackground.getAttribute( 'data-background-hash' );\n\t\t\tlet currentBackgroundHash = currentBackground.getAttribute( 'data-background-hash' );\n\n\t\t\tif( currentBackgroundHash && currentBackgroundHash === previousBackgroundHash && currentBackground !== this.previousBackground ) {\n\t\t\t\tthis.element.classList.add( 'no-transition' );\n\n\t\t\t\t// If multiple slides have the same background video, carry\n\t\t\t\t// the