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\n\t\t\t\n\t\t\t
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`,O.overlay.querySelector("iframe").addEventListener("load",e=>{O.overlay.classList.add("loaded")},!1),O.overlay.querySelector(".close").addEventListener("click",e=>{me(),e.preventDefault()},!1),O.overlay.querySelector(".external").addEventListener("click",e=>{me()},!1)}(t),e.preventDefault())}}function Xt(e){a.isLastSlide()&&!1===l.loop?(Be(0,0),ft()):K?ft():gt()}return n(a,{VERSION:"4.0.0-dev",initialize:function(){if(e)return O.wrapper=e,O.slides=e.querySelector(".slides"),window.addEventListener("load",ve,!1),l={...S,...t,...a.getQueryHash()},D.load(l.dependencies).then(Z),a;console.warn("reveal.js can not initialize without a valid .reveal element.")},configure:ie,sync:He,syncSlide:function(e=y){ne(e),ze(e),B.load(e),Ke(),Ue()},syncFragments:ze,slide:Be,left:mt,right:vt,up:bt,down:yt,prev:wt,next:At,navigateTo:Be,navigateLeft:mt,navigateRight:vt,navigateUp:bt,navigateDown:yt,navigatePrev:wt,navigateNext:At,navigateFragment:()=>z.goto,prevFragment:()=>z.prev,nextFragment:()=>z.next,layout:ve,shuffle:je,availableRoutes:Je,availableFragments:()=>z.availableRoutes(),toggleHelp:ge,toggleOverview:xe,togglePause:Te,toggleAutoSlide:De,isOverview:Me,isPaused:Oe,isAutoSliding:function(){return!(!V||K)},isSpeakerNotes:Ge,loadSlide:()=>B.load,unloadSlide:()=>B.unload,addEventListeners:se,removeEventListeners:oe,dispatchEvent:ce,getState:ut,setState:function(e){if("object"==typeof e){Be(s(e.indexh),s(e.indexv),s(e.indexf));let t=s(e.paused),a=s(e.overview);"boolean"==typeof t&&t!==Oe()&&Te(t),"boolean"==typeof a&&a!==Me()&&xe(a)}},getSlidePastCount:Qe,getProgress:Ze,getIndices:at,getSlides:rt,getSlidesAttributes:function(){return rt().map(e=>{let t={};for(let a=0;axt({keyCode:e}),registerKeyboardShortcut:(e,t)=>J[e]=t,addEventListener:(e,t,r)=>{a.getRevealElement().addEventListener(e,t,r)},removeEventListener:(e,t,r)=>{a.getRevealElement().removeEventListener(e,t,r)},registerPlugin:(...e)=>D.registerPlugin(...e),hasPlugin:(...e)=>D.hasPlugin(...e),getPlugin:(...e)=>D.getPlugin(...e),getPlugins:()=>D.getRegisteredPlugins(),getComputedSlideSize:ye,getPreviousSlide:()=>p,getCurrentSlide:()=>y,getScale:()=>I,getConfig:()=>l,getQueryHash:()=>{let e={};location.search.replace(/[A-Z0-9]+?=([\w\.%-]*)/gi,t=>{e[t.split("=").shift()]=t.split("=").pop()});for(let t in e){let a=e[t];e[t]=s(unescape(a))}return void 0!==e.dependencies&&delete e.dependencies,e},getRevealElement:()=>O.wrapper||document.querySelector(".reveal"),getSlidesElement:()=>O.slides,isFirstSlide:()=>0===c&&0===u,isLastSlide:()=>!!y&&(!y.nextElementSibling&&(!Pe(y)||!y.parentNode.nextElementSibling)),isLastVerticalSlide:()=>!(!y||!Pe(y))&&!y.nextElementSibling,isReady:()=>x,announceStatus:G,getStatusText:ee,slideContent:B,updateControls:Ye,updateProgress:Fe,writeURL:tt})};window.Reveal=k,window.Reveal.initialize=e=>(window.Reveal=new k(document.querySelector(".reveal"),e),window.Reveal.initialize(),new Promise(e=>window.Reveal.addEventListener("ready",e)))}]); \ No newline at end of file diff --git a/js/controllers/fragments.js b/js/controllers/fragments.js new file mode 100644 index 0000000..915cb17 --- /dev/null +++ b/js/controllers/fragments.js @@ -0,0 +1,302 @@ +import { extend, toArray } from '../utils/util.js' + +/** + * + */ +export default class Fragments { + + constructor( Reveal ) { + + this.Reveal = Reveal; + + } + + /** + * Shows all fragments in the presentation. Used when + * fragments are disabled presentation-wide. + */ + showAll() { + + toArray( this.Reveal.getSlidesElement().querySelectorAll( '.fragment' ) ).forEach( element => { + element.classList.add( 'visible' ); + element.classList.remove( 'current-fragment' ); + } ); + + } + + /** + * Returns an object describing the available fragment + * directions. + * + * @return {{prev: boolean, next: boolean}} + */ + availableRoutes() { + + let currentSlide = this.Reveal.getCurrentSlide(); + if( currentSlide && this.Reveal.getConfig().fragments ) { + let fragments = currentSlide.querySelectorAll( '.fragment' ); + let hiddenFragments = currentSlide.querySelectorAll( '.fragment:not(.visible)' ); + + return { + prev: fragments.length - hiddenFragments.length > 0, + next: !!hiddenFragments.length + }; + } + else { + return { prev: false, next: false }; + } + + } + + /** + * Return a sorted fragments list, ordered by an increasing + * "data-fragment-index" attribute. + * + * Fragments will be revealed in the order that they are returned by + * this function, so you can use the index attributes to control the + * order of fragment appearance. + * + * To maintain a sensible default fragment order, fragments are presumed + * to be passed in document order. This function adds a "fragment-index" + * attribute to each node if such an attribute is not already present, + * and sets that attribute to an integer value which is the position of + * the fragment within the fragments list. + * + * @param {object[]|*} fragments + * @param {boolean} grouped If true the returned array will contain + * nested arrays for all fragments with the same index + * @return {object[]} sorted Sorted array of fragments + */ + sort( fragments, grouped = false ) { + + fragments = toArray( fragments ); + + let ordered = [], + unordered = [], + sorted = []; + + // Group ordered and unordered elements + fragments.forEach( fragment => { + if( fragment.hasAttribute( 'data-fragment-index' ) ) { + let index = parseInt( fragment.getAttribute( 'data-fragment-index' ), 10 ); + + if( !ordered[index] ) { + ordered[index] = []; + } + + ordered[index].push( fragment ); + } + else { + unordered.push( [ fragment ] ); + } + } ); + + // Append fragments without explicit indices in their + // DOM order + ordered = ordered.concat( unordered ); + + // Manually count the index up per group to ensure there + // are no gaps + let index = 0; + + // Push all fragments in their sorted order to an array, + // this flattens the groups + ordered.forEach( group => { + group.forEach( fragment => { + sorted.push( fragment ); + fragment.setAttribute( 'data-fragment-index', index ); + } ); + + index ++; + } ); + + return grouped === true ? ordered : sorted; + + } + + /** + * Sorts and formats all of fragments in the + * presentation. + */ + sortAll() { + + this.Reveal.getHorizontalSlides().forEach( horizontalSlide => { + + let verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) ); + verticalSlides.forEach( ( verticalSlide, y ) => { + + this.sort( verticalSlide.querySelectorAll( '.fragment' ) ); + + }, this ); + + if( verticalSlides.length === 0 ) this.sort( horizontalSlide.querySelectorAll( '.fragment' ) ); + + } ); + + } + + /** + * Refreshes the fragments on the current slide so that they + * have the appropriate classes (.visible + .current-fragment). + * + * @param {number} [index] The index of the current fragment + * @param {array} [fragments] Array containing all fragments + * in the current slide + * + * @return {{shown: array, hidden: array}} + */ + update( index, fragments ) { + + let changedFragments = { + shown: [], + hidden: [] + }; + + let currentSlide = this.Reveal.getCurrentSlide(); + if( currentSlide && this.Reveal.getConfig().fragments ) { + + fragments = fragments || this.sort( currentSlide.querySelectorAll( '.fragment' ) ); + + if( fragments.length ) { + + let maxIndex = 0; + + if( typeof index !== 'number' ) { + let currentFragment = this.sort( currentSlide.querySelectorAll( '.fragment.visible' ) ).pop(); + if( currentFragment ) { + index = parseInt( currentFragment.getAttribute( 'data-fragment-index' ) || 0, 10 ); + } + } + + toArray( fragments ).forEach( ( el, i ) => { + + if( el.hasAttribute( 'data-fragment-index' ) ) { + i = parseInt( el.getAttribute( 'data-fragment-index' ), 10 ); + } + + maxIndex = Math.max( maxIndex, i ); + + // Visible fragments + if( i <= index ) { + if( !el.classList.contains( 'visible' ) ) changedFragments.shown.push( el ); + el.classList.add( 'visible' ); + el.classList.remove( 'current-fragment' ); + + // Announce the fragments one by one to the Screen Reader + this.Reveal.announceStatus( this.Reveal.getStatusText( el ) ); + + if( i === index ) { + el.classList.add( 'current-fragment' ); + this.Reveal.slideContent.startEmbeddedContent( el ); + } + } + // Hidden fragments + else { + if( el.classList.contains( 'visible' ) ) changedFragments.hidden.push( el ); + el.classList.remove( 'visible' ); + el.classList.remove( 'current-fragment' ); + } + + } ); + + // Write the current fragment index to the slide
. + // This can be used by end users to apply styles based on + // the current fragment index. + index = typeof index === 'number' ? index : -1; + index = Math.max( Math.min( index, maxIndex ), -1 ); + currentSlide.setAttribute( 'data-fragment', index ); + + } + + } + + return changedFragments; + + } + + /** + * Navigate to the specified slide fragment. + * + * @param {?number} index The index of the fragment that + * should be shown, -1 means all are invisible + * @param {number} offset Integer offset to apply to the + * fragment index + * + * @return {boolean} true if a change was made in any + * fragments visibility as part of this call + */ + goto( index, offset = 0 ) { + + let currentSlide = this.Reveal.getCurrentSlide(); + if( currentSlide && this.Reveal.getConfig().fragments ) { + + let fragments = this.sort( currentSlide.querySelectorAll( '.fragment' ) ); + if( fragments.length ) { + + // If no index is specified, find the current + if( typeof index !== 'number' ) { + let lastVisibleFragment = this.sort( currentSlide.querySelectorAll( '.fragment.visible' ) ).pop(); + + if( lastVisibleFragment ) { + index = parseInt( lastVisibleFragment.getAttribute( 'data-fragment-index' ) || 0, 10 ); + } + else { + index = -1; + } + } + + // Apply the offset if there is one + index += offset; + + let changedFragments = this.update( index, fragments ); + + if( changedFragments.hidden.length ) { + this.Reveal.dispatchEvent( 'fragmenthidden', { fragment: changedFragments.hidden[0], fragments: changedFragments.hidden } ); + } + + if( changedFragments.shown.length ) { + this.Reveal.dispatchEvent( 'fragmentshown', { fragment: changedFragments.shown[0], fragments: changedFragments.shown } ); + } + + this.Reveal.updateControls(); + this.Reveal.updateProgress(); + + if( this.Reveal.getConfig().fragmentInURL ) { + this.Reveal.writeURL(); + } + + return !!( changedFragments.shown.length || changedFragments.hidden.length ); + + } + + } + + return false; + + } + + /** + * Navigate to the next slide fragment. + * + * @return {boolean} true if there was a next fragment, + * false otherwise + */ + next() { + + return this.goto( null, 1 ); + + } + + /** + * Navigate to the previous slide fragment. + * + * @return {boolean} true if there was a previous fragment, + * false otherwise + */ + prev() { + + return this.goto( null, -1 ); + + } + +} \ No newline at end of file diff --git a/js/controllers/slidecontent.js b/js/controllers/slidecontent.js index ec2aa71..f85be49 100644 --- a/js/controllers/slidecontent.js +++ b/js/controllers/slidecontent.js @@ -1,5 +1,6 @@ import { HORIZONTAL_SLIDES_SELECTOR, VERTICAL_SLIDES_SELECTOR } from '../utils/constants.js' import { extend, toArray, closestParent } from '../utils/util.js' +import { isMobile } from '../utils/device.js' /** * Handles loading, unloading and playback of slide @@ -13,6 +14,26 @@ export default class SlideContent { } + /** + * Should the given element be preloaded? + * Decides based on local element attributes and global config. + * + * @param {HTMLElement} element + */ + shouldPreload( element ) { + + // Prefer an explicit global preload setting + let preload = this.Reveal.getConfig().preloadIframes; + + // If no global setting is available, fall back on the element's + // own preload setting + if( typeof preload !== 'boolean' ) { + preload = element.hasAttribute( 'data-preload' ); + } + + return preload; + } + /** * Called when the given slide is within the configured view * distance. Shows the slide element and loads any content @@ -27,7 +48,7 @@ export default class SlideContent { // Media elements with data-src attributes toArray( slide.querySelectorAll( 'img[data-src], video[data-src], audio[data-src], iframe[data-src]' ) ).forEach( element => { - if( element.tagName !== 'IFRAME' || shouldPreload( element ) ) { + if( element.tagName !== 'IFRAME' || this.shouldPreload( element ) ) { element.setAttribute( 'src', element.getAttribute( 'data-src' ) ); element.setAttribute( 'data-lazy-loaded', '' ); element.removeAttribute( 'data-src' ); @@ -89,7 +110,7 @@ export default class SlideContent { // Inline video playback works (at least in Mobile Safari) as // long as the video is muted and the `playsinline` attribute is // present - if( isMobileDevice ) { + if( isMobile ) { video.muted = true; video.autoplay = true; video.setAttribute( 'playsinline', '' ); @@ -126,7 +147,7 @@ export default class SlideContent { if( backgroundIframeElement ) { // Check if this iframe is eligible to be preloaded - if( shouldPreload( background ) && !/autoplay=(1|true|yes)/gi.test( backgroundIframe ) ) { + if( this.shouldPreload( background ) && !/autoplay=(1|true|yes)/gi.test( backgroundIframe ) ) { if( backgroundIframeElement.getAttribute( 'src' ) !== backgroundIframe ) { backgroundIframeElement.setAttribute( 'src', backgroundIframe ); } @@ -222,7 +243,7 @@ export default class SlideContent { } // Prefer an explicit global autoplay setting - let autoplay = config.autoPlayMedia; + let autoplay = this.Reveal.getConfig().autoPlayMedia; // If no global setting is available, fall back on the element's // own autoplay setting @@ -238,7 +259,7 @@ export default class SlideContent { } // Mobile devices never fire a loaded event so instead // of waiting, we initiate playback - else if( isMobileDevice ) { + else if( isMobile ) { let promise = el.play(); // If autoplay does not work, ensure that the controls are visible so @@ -327,7 +348,7 @@ export default class SlideContent { if( isAttachedToDOM && isVisible ) { // Prefer an explicit global autoplay setting - let autoplay = config.autoPlayMedia; + let autoplay = this.Reveal.getConfig().autoPlayMedia; // If no global setting is available, fall back on the element's // own autoplay setting diff --git a/js/reveal.js b/js/reveal.js index a74ac8a..5aff56b 100644 --- a/js/reveal.js +++ b/js/reveal.js @@ -1,5 +1,6 @@ import SlideContent from './controllers/slidecontent.js' import AutoAnimate from './controllers/autoanimate.js' +import Fragments from './controllers/fragments.js' import Plugins from './controllers/plugins.js' import Playback from './components/playback.js' import defaultConfig from './config.js' @@ -19,6 +20,7 @@ import { closestParent, enterFullscreen } from './utils/util.js' +import { isMobile, isChrome, isAndroid, supportsZoom } from './utils/device.js' import { colorToRgb, colorBrightness } from './utils/color.js' /** @@ -88,18 +90,12 @@ export default function( revealElement, options ) { // Controls auto-animations between slides autoAnimate = new AutoAnimate( Reveal ), + // Controls navigation between slide fragments + fragments = new Fragments( Reveal ), + // List of asynchronously loaded reveal.js dependencies asyncDependencies = [], - // Features supported by the browser, see #checkCapabilities() - features = {}, - - // Client is a mobile device, see #checkCapabilities() - isMobileDevice, - - // Client is a desktop Chrome, see #checkCapabilities() - isChrome, - // Throttles mouse wheel navigation lastMouseWheelStep = 0, @@ -150,8 +146,6 @@ export default function( revealElement, options ) { return; } - checkCapabilities(); - // Cache references to key DOM elements dom.wrapper = revealElement; dom.slides = revealElement.querySelector( '.slides' ); @@ -169,25 +163,6 @@ export default function( revealElement, options ) { } - /** - * Inspect the client to see what features it supports. - */ - function checkCapabilities() { - - isMobileDevice = /(iphone|ipod|ipad|android)/gi.test( UA ) || - ( navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1 ); // iPadOS - isChrome = /chrome/i.test( UA ) && !/edge/i.test( UA ); - - let testElement = document.createElement( 'div' ); - - // Flags if we should use zoom instead of transform to scale - // up slides. Zoom produces crisper results but has a lot of - // xbrowser quirks so we only use it in whitelsited browsers. - features.zoom = 'zoom' in testElement.style && !isMobileDevice && - ( isChrome || /Version\/[\d\.]+.*Safari/.test( UA ) ); - - } - /** * Starts up reveal.js by binding input events and navigating * to the current URL deeplink if there is one. @@ -258,20 +233,13 @@ export default function( revealElement, options ) { // Prevent transitions while we're loading dom.slides.classList.add( 'no-transition' ); - if( isMobileDevice ) { + if( isMobile ) { dom.wrapper.classList.add( 'no-hover' ); } else { dom.wrapper.classList.remove( 'no-hover' ); } - if( /iphone/gi.test( UA ) ) { - dom.wrapper.classList.add( 'ua-iphone' ); - } - else { - dom.wrapper.classList.remove( 'ua-iphone' ); - } - // Background element dom.background = createSingletonNode( dom.wrapper, 'div', 'backgrounds', null ); @@ -341,6 +309,15 @@ export default function( revealElement, options ) { } + /** + * Announces the given text to screen readers. + */ + function announceStatus( value ) { + + dom.statusDiv.textContent = value; + + } + /** * Converts the given HTML element into a string of text * that can be announced to a screen reader. Hidden @@ -492,7 +469,7 @@ export default function( revealElement, options ) { // Each fragment 'group' is an array containing one or more // fragments. Multiple fragments that appear at the same time // are part of the same group. - let fragmentGroups = sortFragments( page.querySelectorAll( '.fragment' ), true ); + let fragmentGroups = fragments.sort( page.querySelectorAll( '.fragment' ), true ); let previousFragmentStep; let previousPage; @@ -954,10 +931,7 @@ export default function( revealElement, options ) { // When fragments are turned off they should be visible if( config.fragments === false ) { - toArray( dom.slides.querySelectorAll( '.fragment' ) ).forEach( element => { - element.classList.add( 'visible' ); - element.classList.remove( 'current-fragment' ); - } ); + fragments.showAll(); } // Slide numbers @@ -1057,7 +1031,7 @@ export default function( revealElement, options ) { // Only support touch for Android, fixes double navigations in // stock browser - if( UA.match( /android/gi ) ) { + if( isAndroid ) { pointerEvents = [ 'touchstart' ]; } @@ -1418,7 +1392,7 @@ export default function( revealElement, options ) { // property where 100x adds up to the correct height. // // https://css-tricks.com/the-trick-to-viewport-units-on-mobile/ - if( isMobileDevice ) { + if( isMobile ) { document.documentElement.style.setProperty( '--vh', ( window.innerHeight * 0.01 ) + 'px' ); } @@ -1454,7 +1428,7 @@ export default function( revealElement, options ) { // effects are minor differences in text layout and iframe // viewports changing size. A 200x200 iframe viewport in a // 2x zoomed presentation ends up having a 400x400 viewport. - if( scale > 1 && features.zoom && window.devicePixelRatio < 2 ) { + if( scale > 1 && supportsZoom && window.devicePixelRatio < 2 ) { dom.slides.style.zoom = scale; dom.slides.style.left = ''; dom.slides.style.top = ''; @@ -2060,7 +2034,7 @@ export default function( revealElement, options ) { // Show fragment, if specified if( typeof f !== 'undefined' ) { - navigateFragment( f ); + fragments.goto( f ); } // Dispatch an event if the slide changed @@ -2126,8 +2100,8 @@ export default function( revealElement, options ) { slideContent.startEmbeddedContent( currentSlide ); } - // Announce the current slide contents, for screen readers - dom.statusDiv.textContent = getStatusText( currentSlide ); + // Announce the current slide contents to screen readers + announceStatus( getStatusText( currentSlide ) ); updateControls(); updateProgress(); @@ -2135,7 +2109,8 @@ export default function( revealElement, options ) { updateParallax(); updateSlideNumber(); updateNotes(); - updateFragments(); + + fragments.update(); // Update the URL hash writeURL(); @@ -2190,7 +2165,7 @@ export default function( revealElement, options ) { // Write the current hash to the URL writeURL(); - sortAllFragments(); + fragments.sortAll(); updateControls(); updateProgress(); @@ -2248,7 +2223,7 @@ export default function( revealElement, options ) { */ function syncFragments( slide = currentSlide ) { - return sortFragments( slide.querySelectorAll( '.fragment' ) ); + return config.sort( slide.querySelectorAll( '.fragment' ) ); } @@ -2275,27 +2250,6 @@ export default function( revealElement, options ) { } - /** - * Sorts and formats all of fragments in the - * presentation. - */ - function sortAllFragments() { - - getHorizontalSlides().forEach( horizontalSlide => { - - let verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) ); - verticalSlides.forEach( ( verticalSlide, y ) => { - - sortFragments( verticalSlide.querySelectorAll( '.fragment' ) ); - - } ); - - if( verticalSlides.length === 0 ) sortFragments( horizontalSlide.querySelectorAll( '.fragment' ) ); - - } ); - - } - /** * Randomly shuffles all slides in the deck. */ @@ -2438,7 +2392,7 @@ export default function( revealElement, options ) { // Shorten the view distance on devices that typically have // less resources - if( isMobileDevice ) { + if( isMobile ) { viewDistance = isOverview() ? 6 : config.mobileViewDistance; } @@ -2657,7 +2611,7 @@ export default function( revealElement, options ) { function updateControls() { let routes = availableRoutes(); - let fragments = availableFragments(); + let fragmentsRoutes = fragments.availableRoutes(); // Remove the 'enabled' class from all directions [...dom.controlsLeft, ...dom.controlsRight, ...dom.controlsUp, ...dom.controlsDown, ...dom.controlsPrev, ...dom.controlsNext].forEach( node => { @@ -2681,23 +2635,22 @@ export default function( revealElement, options ) { if( currentSlide ) { // Always apply fragment decorator to prev/next buttons - if( fragments.prev ) dom.controlsPrev.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } ); - if( fragments.next ) dom.controlsNext.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } ); + if( fragmentsRoutes.prev ) dom.controlsPrev.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } ); + if( fragmentsRoutes.next ) dom.controlsNext.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } ); // Apply fragment decorators to directional buttons based on // what slide axis they are in if( isVerticalSlide( currentSlide ) ) { - if( fragments.prev ) dom.controlsUp.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } ); - if( fragments.next ) dom.controlsDown.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } ); + if( fragmentsRoutes.prev ) dom.controlsUp.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } ); + if( fragmentsRoutes.next ) dom.controlsDown.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } ); } else { - if( fragments.prev ) dom.controlsLeft.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } ); - if( fragments.next ) dom.controlsRight.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } ); + if( fragmentsRoutes.prev ) dom.controlsLeft.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } ); + if( fragmentsRoutes.next ) dom.controlsRight.forEach( el => { el.classList.add( 'fragmented', 'enabled' ); el.removeAttribute( 'disabled' ); } ); } } - if( config.controlsTutorial ) { // Highlight control arrows with an animation to ensure @@ -2790,7 +2743,7 @@ export default function( revealElement, options ) { // Stop content inside of previous backgrounds if( previousBackground ) { - slideContent.stopEmbeddedContent( previousBackground, { unloadIframes: !shouldPreload( previousBackground ) } ); + slideContent.stopEmbeddedContent( previousBackground, { unloadIframes: !slideContent.shouldPreload( previousBackground ) } ); } @@ -2901,26 +2854,6 @@ export default function( revealElement, options ) { } - /** - * Should the given element be preloaded? - * Decides based on local element attributes and global config. - * - * @param {HTMLElement} element - */ - function shouldPreload( element ) { - - // Prefer an explicit global preload setting - let preload = config.preloadIframes; - - // If no global setting is available, fall back on the element's - // own preload setting - if( typeof preload !== 'boolean' ) { - preload = element.hasAttribute( 'data-preload' ); - } - - return preload; - } - /** * Determine what available routes there are for navigation. * @@ -2963,29 +2896,6 @@ export default function( revealElement, options ) { } - /** - * Returns an object describing the available fragment - * directions. - * - * @return {{prev: boolean, next: boolean}} - */ - function availableFragments() { - - if( currentSlide && config.fragments ) { - let fragments = currentSlide.querySelectorAll( '.fragment' ); - let hiddenFragments = currentSlide.querySelectorAll( '.fragment:not(.visible)' ); - - return { - prev: fragments.length - hiddenFragments.length > 0, - next: !!hiddenFragments.length - }; - } - else { - return { prev: false, next: false }; - } - - } - /** * Returns the number of past slides. This can be used as a global * flattened index for slides. @@ -3433,234 +3343,6 @@ export default function( revealElement, options ) { } - /** - * Return a sorted fragments list, ordered by an increasing - * "data-fragment-index" attribute. - * - * Fragments will be revealed in the order that they are returned by - * this function, so you can use the index attributes to control the - * order of fragment appearance. - * - * To maintain a sensible default fragment order, fragments are presumed - * to be passed in document order. This function adds a "fragment-index" - * attribute to each node if such an attribute is not already present, - * and sets that attribute to an integer value which is the position of - * the fragment within the fragments list. - * - * @param {object[]|*} fragments - * @param {boolean} grouped If true the returned array will contain - * nested arrays for all fragments with the same index - * @return {object[]} sorted Sorted array of fragments - */ - function sortFragments( fragments, grouped = false ) { - - fragments = toArray( fragments ); - - let ordered = [], - unordered = [], - sorted = []; - - // Group ordered and unordered elements - fragments.forEach( fragment => { - if( fragment.hasAttribute( 'data-fragment-index' ) ) { - let index = parseInt( fragment.getAttribute( 'data-fragment-index' ), 10 ); - - if( !ordered[index] ) { - ordered[index] = []; - } - - ordered[index].push( fragment ); - } - else { - unordered.push( [ fragment ] ); - } - } ); - - // Append fragments without explicit indices in their - // DOM order - ordered = ordered.concat( unordered ); - - // Manually count the index up per group to ensure there - // are no gaps - let index = 0; - - // Push all fragments in their sorted order to an array, - // this flattens the groups - ordered.forEach( group => { - group.forEach( fragment => { - sorted.push( fragment ); - fragment.setAttribute( 'data-fragment-index', index ); - } ); - - index ++; - } ); - - return grouped === true ? ordered : sorted; - - } - - /** - * Refreshes the fragments on the current slide so that they - * have the appropriate classes (.visible + .current-fragment). - * - * @param {number} [index] The index of the current fragment - * @param {array} [fragments] Array containing all fragments - * in the current slide - * - * @return {{shown: array, hidden: array}} - */ - function updateFragments( index, fragments ) { - - let changedFragments = { - shown: [], - hidden: [] - }; - - if( currentSlide && config.fragments ) { - - fragments = fragments || sortFragments( currentSlide.querySelectorAll( '.fragment' ) ); - - if( fragments.length ) { - - let maxIndex = 0; - - if( typeof index !== 'number' ) { - let currentFragment = sortFragments( currentSlide.querySelectorAll( '.fragment.visible' ) ).pop(); - if( currentFragment ) { - index = parseInt( currentFragment.getAttribute( 'data-fragment-index' ) || 0, 10 ); - } - } - - toArray( fragments ).forEach( ( el, i ) => { - - if( el.hasAttribute( 'data-fragment-index' ) ) { - i = parseInt( el.getAttribute( 'data-fragment-index' ), 10 ); - } - - maxIndex = Math.max( maxIndex, i ); - - // Visible fragments - if( i <= index ) { - if( !el.classList.contains( 'visible' ) ) changedFragments.shown.push( el ); - el.classList.add( 'visible' ); - el.classList.remove( 'current-fragment' ); - - // Announce the fragments one by one to the Screen Reader - dom.statusDiv.textContent = getStatusText( el ); - - if( i === index ) { - el.classList.add( 'current-fragment' ); - slideContent.startEmbeddedContent( el ); - } - } - // Hidden fragments - else { - if( el.classList.contains( 'visible' ) ) changedFragments.hidden.push( el ); - el.classList.remove( 'visible' ); - el.classList.remove( 'current-fragment' ); - } - - } ); - - // Write the current fragment index to the slide
. - // This can be used by end users to apply styles based on - // the current fragment index. - index = typeof index === 'number' ? index : -1; - index = Math.max( Math.min( index, maxIndex ), -1 ); - currentSlide.setAttribute( 'data-fragment', index ); - - } - - } - - return changedFragments; - - } - - /** - * Navigate to the specified slide fragment. - * - * @param {?number} index The index of the fragment that - * should be shown, -1 means all are invisible - * @param {number} offset Integer offset to apply to the - * fragment index - * - * @return {boolean} true if a change was made in any - * fragments visibility as part of this call - */ - function navigateFragment( index, offset = 0 ) { - - if( currentSlide && config.fragments ) { - - let fragments = sortFragments( currentSlide.querySelectorAll( '.fragment' ) ); - if( fragments.length ) { - - // If no index is specified, find the current - if( typeof index !== 'number' ) { - let lastVisibleFragment = sortFragments( currentSlide.querySelectorAll( '.fragment.visible' ) ).pop(); - - if( lastVisibleFragment ) { - index = parseInt( lastVisibleFragment.getAttribute( 'data-fragment-index' ) || 0, 10 ); - } - else { - index = -1; - } - } - - // Apply the offset if there is one - index += offset; - - let changedFragments = updateFragments( index, fragments ); - - if( changedFragments.hidden.length ) { - dispatchEvent( 'fragmenthidden', { fragment: changedFragments.hidden[0], fragments: changedFragments.hidden } ); - } - - if( changedFragments.shown.length ) { - dispatchEvent( 'fragmentshown', { fragment: changedFragments.shown[0], fragments: changedFragments.shown } ); - } - - updateControls(); - updateProgress(); - - if( config.fragmentInURL ) { - writeURL(); - } - - return !!( changedFragments.shown.length || changedFragments.hidden.length ); - - } - - } - - return false; - - } - - /** - * Navigate to the next slide fragment. - * - * @return {boolean} true if there was a next fragment, - * false otherwise - */ - function nextFragment() { - - return navigateFragment( null, 1 ); - - } - - /** - * Navigate to the previous slide fragment. - * - * @return {boolean} true if there was a previous fragment, - * false otherwise - */ - function prevFragment() { - - return navigateFragment( null, -1 ); - - } - /** * Cues a new automated slide if enabled in the config. */ @@ -3719,7 +3401,7 @@ export default function( revealElement, options ) { // - The presentation isn't paused // - The overview isn't active // - The presentation isn't over - if( autoSlide && !autoSlidePaused && !isPaused() && !isOverview() && ( !Reveal.isLastSlide() || availableFragments().next || config.loop === true ) ) { + if( autoSlide && !autoSlidePaused && !isPaused() && !isOverview() && ( !Reveal.isLastSlide() || fragments.availableRoutes().next || config.loop === true ) ) { autoSlideTimeout = setTimeout( () => { if( typeof config.autoSlideMethod === 'function' ) { config.autoSlideMethod() @@ -3780,12 +3462,12 @@ export default function( revealElement, options ) { // Reverse for RTL if( config.rtl ) { - if( ( isOverview() || nextFragment() === false ) && availableRoutes().left ) { + if( ( isOverview() || fragments.next() === false ) && availableRoutes().left ) { slide( indexh + 1, config.navigationMode === 'grid' ? indexv : undefined ); } } // Normal navigation - else if( ( isOverview() || prevFragment() === false ) && availableRoutes().left ) { + else if( ( isOverview() || fragments.prev() === false ) && availableRoutes().left ) { slide( indexh - 1, config.navigationMode === 'grid' ? indexv : undefined ); } @@ -3797,12 +3479,12 @@ export default function( revealElement, options ) { // Reverse for RTL if( config.rtl ) { - if( ( isOverview() || prevFragment() === false ) && availableRoutes().right ) { + if( ( isOverview() || fragments.prev() === false ) && availableRoutes().right ) { slide( indexh - 1, config.navigationMode === 'grid' ? indexv : undefined ); } } // Normal navigation - else if( ( isOverview() || nextFragment() === false ) && availableRoutes().right ) { + else if( ( isOverview() || fragments.next() === false ) && availableRoutes().right ) { slide( indexh + 1, config.navigationMode === 'grid' ? indexv : undefined ); } @@ -3811,7 +3493,7 @@ export default function( revealElement, options ) { function navigateUp() { // Prioritize hiding fragments - if( ( isOverview() || prevFragment() === false ) && availableRoutes().up ) { + if( ( isOverview() || fragments.prev() === false ) && availableRoutes().up ) { slide( indexh, indexv - 1 ); } @@ -3822,7 +3504,7 @@ export default function( revealElement, options ) { hasNavigatedVertically = true; // Prioritize revealing fragments - if( ( isOverview() || nextFragment() === false ) && availableRoutes().down ) { + if( ( isOverview() || fragments.next() === false ) && availableRoutes().down ) { slide( indexh, indexv + 1 ); } @@ -3837,7 +3519,7 @@ export default function( revealElement, options ) { function navigatePrev() { // Prioritize revealing fragments - if( prevFragment() === false ) { + if( fragments.prev() === false ) { if( availableRoutes().up ) { navigateUp(); } @@ -3871,7 +3553,7 @@ export default function( revealElement, options ) { hasNavigatedVertically = true; // Prioritize revealing fragments - if( nextFragment() === false ) { + if( fragments.next() === false ) { let routes = availableRoutes(); @@ -4293,7 +3975,7 @@ export default function( revealElement, options ) { } // There's a bug with swiping on some Android devices unless // the default action is always prevented - else if( UA.match( /android/gi ) ) { + else if( isAndroid ) { event.preventDefault(); } @@ -4562,9 +4244,9 @@ export default function( revealElement, options ) { navigateNext: navigateNext, // Fragment methods - navigateFragment, - prevFragment, - nextFragment, + navigateFragment: () => fragments.goto, + prevFragment: () => fragments.prev, + nextFragment: () => fragments.next, // Forces an update in slide layout layout, @@ -4576,7 +4258,7 @@ export default function( revealElement, options ) { availableRoutes, // Returns an object with the available fragments as booleans (prev/next) - availableFragments, + availableFragments: () => fragments.availableRoutes(), // Toggles a help overlay with keyboard shortcuts toggleHelp, @@ -4650,6 +4332,20 @@ export default function( revealElement, options ) { addKeyBinding, removeKeyBinding, + // Programmatically triggers a keyboard event + triggerKey: keyCode => onDocumentKeyDown( { keyCode } ), + + // Registers a new shortcut to include in the help overlay + registerKeyboardShortcut: ( key, value ) => keyboardShortcuts[key] = value, + + // Forward event binding to the reveal DOM element + addEventListener: ( type, listener, useCapture ) => { + Reveal.getRevealElement().addEventListener( type, listener, useCapture ); + }, + removeEventListener: ( type, listener, useCapture ) => { + Reveal.getRevealElement().removeEventListener( type, listener, useCapture ); + }, + // API for registering and retrieving plugins registerPlugin: (...args) => plugins.registerPlugin( ...args ), hasPlugin: (...args) => plugins.hasPlugin( ...args ), @@ -4732,19 +4428,18 @@ export default function( revealElement, options ) { // Checks if reveal.js has been loaded and is ready for use isReady: () => ready, - // Forward event binding to the reveal DOM element - addEventListener: ( type, listener, useCapture ) => { - Reveal.getRevealElement().addEventListener( type, listener, useCapture ); - }, - removeEventListener: ( type, listener, useCapture ) => { - Reveal.getRevealElement().removeEventListener( type, listener, useCapture ); - }, - // Programmatically triggers a keyboard event - triggerKey: keyCode => onDocumentKeyDown( { keyCode } ), + // Methods for announcing content to screen readers + announceStatus, + getStatusText, + + // Expose direct access to controllers via the API + slideContent, + + updateControls, + updateProgress, + writeURL - // Registers a new shortcut to include in the help overlay - registerKeyboardShortcut: ( key, value ) => keyboardShortcuts[key] = value } ); }; \ No newline at end of file diff --git a/js/utils/device.js b/js/utils/device.js new file mode 100644 index 0000000..c6b4095 --- /dev/null +++ b/js/utils/device.js @@ -0,0 +1,15 @@ +const UA = navigator.userAgent; +const testElement = document.createElement( 'div' ); + +export const isMobile = /(iphone|ipod|ipad|android)/gi.test( UA ) || + ( navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1 ); // iPadOS + +export const isChrome = /chrome/i.test( UA ) && !/edge/i.test( UA ); + +export const isAndroid = /android/gi.test( UA ); + +// Flags if we should use zoom instead of transform to scale +// up slides. Zoom produces crisper results but has a lot of +// xbrowser quirks so we only use it in whitelsited browsers. +export const supportsZoom = 'zoom' in testElement.style && !isMobile && + ( isChrome || /Version\/[\d\.]+.*Safari/.test( UA ) ); \ No newline at end of file diff --git a/test/test.html b/test/test.html index 5f64d6e..7751f20 100644 --- a/test/test.html +++ b/test/test.html @@ -78,7 +78,619 @@ - + diff --git a/test/test.js b/test/test.js deleted file mode 100644 index a6bb0cc..0000000 --- a/test/test.js +++ /dev/null @@ -1,612 +0,0 @@ -// These tests expect the DOM to contain a presentation -// with the following slide structure: -// -// 1 -// 2 - Three sub-slides -// 3 - Three fragment elements -// 3 - Two fragments with same data-fragment-index -// 4 - -Reveal.initialize().then( function() { - - // --------------------------------------------------------------- - // DOM TESTS - - QUnit.module( 'DOM' ); - - QUnit.test( 'Initial slides classes', function( assert ) { - var horizontalSlides = document.querySelectorAll( '.reveal .slides>section' ) - - assert.strictEqual( document.querySelectorAll( '.reveal .slides section.past' ).length, 0, 'no .past slides' ); - assert.strictEqual( document.querySelectorAll( '.reveal .slides section.present' ).length, 1, 'one .present slide' ); - assert.strictEqual( document.querySelectorAll( '.reveal .slides>section.future' ).length, horizontalSlides.length - 1, 'remaining horizontal slides are .future' ); - - assert.strictEqual( document.querySelectorAll( '.reveal .slides section.stack' ).length, 2, 'two .stacks' ); - - assert.ok( document.querySelectorAll( '.reveal .slides section.stack' )[0].querySelectorAll( '.future' ).length > 0, 'vertical slides are given .future' ); - }); - - // --------------------------------------------------------------- - // API TESTS - - QUnit.module( 'API' ); - - QUnit.test( 'Reveal.isReady', function( assert ) { - assert.strictEqual( Reveal.isReady(), true, 'returns true' ); - }); - - QUnit.test( 'Reveal.isOverview', function( assert ) { - assert.strictEqual( Reveal.isOverview(), false, 'false by default' ); - - Reveal.toggleOverview(); - assert.strictEqual( Reveal.isOverview(), true, 'true after toggling on' ); - - Reveal.toggleOverview(); - assert.strictEqual( Reveal.isOverview(), false, 'false after toggling off' ); - }); - - QUnit.test( 'Reveal.isPaused', function( assert ) { - assert.strictEqual( Reveal.isPaused(), false, 'false by default' ); - - Reveal.togglePause(); - assert.strictEqual( Reveal.isPaused(), true, 'true after pausing' ); - - Reveal.togglePause(); - assert.strictEqual( Reveal.isPaused(), false, 'false after resuming' ); - }); - - QUnit.test( 'Reveal.isFirstSlide', function( assert ) { - Reveal.slide( 0, 0 ); - assert.strictEqual( Reveal.isFirstSlide(), true, 'true after Reveal.slide( 0, 0 )' ); - - Reveal.slide( 1, 0 ); - assert.strictEqual( Reveal.isFirstSlide(), false, 'false after Reveal.slide( 1, 0 )' ); - - Reveal.slide( 0, 0 ); - assert.strictEqual( Reveal.isFirstSlide(), true, 'true after Reveal.slide( 0, 0 )' ); - }); - - QUnit.test( 'Reveal.isFirstSlide after vertical slide', function( assert ) { - Reveal.slide( 1, 1 ); - Reveal.slide( 0, 0 ); - assert.strictEqual( Reveal.isFirstSlide(), true, 'true after Reveal.slide( 1, 1 ) and then Reveal.slide( 0, 0 )' ); - }); - - QUnit.test( 'Reveal.isLastSlide', function( assert ) { - Reveal.slide( 0, 0 ); - assert.strictEqual( Reveal.isLastSlide(), false, 'false after Reveal.slide( 0, 0 )' ); - - var lastSlideIndex = document.querySelectorAll( '.reveal .slides>section' ).length - 1; - - Reveal.slide( lastSlideIndex, 0 ); - assert.strictEqual( Reveal.isLastSlide(), true, 'true after Reveal.slide( '+ lastSlideIndex +', 0 )' ); - - Reveal.slide( 0, 0 ); - assert.strictEqual( Reveal.isLastSlide(), false, 'false after Reveal.slide( 0, 0 )' ); - }); - - QUnit.test( 'Reveal.isLastSlide after vertical slide', function( assert ) { - var lastSlideIndex = document.querySelectorAll( '.reveal .slides>section' ).length - 1; - - Reveal.slide( 1, 1 ); - Reveal.slide( lastSlideIndex ); - assert.strictEqual( Reveal.isLastSlide(), true, 'true after Reveal.slide( 1, 1 ) and then Reveal.slide( '+ lastSlideIndex +', 0 )' ); - }); - - QUnit.test( 'Reveal.getTotalSlides', function( assert ) { - assert.strictEqual( Reveal.getTotalSlides(), 8, 'eight slides in total' ); - }); - - QUnit.test( 'Reveal.getIndices', function( assert ) { - var indices = Reveal.getIndices(); - - assert.ok( indices.hasOwnProperty( 'h' ), 'h exists' ); - assert.ok( indices.hasOwnProperty( 'v' ), 'v exists' ); - assert.ok( indices.hasOwnProperty( 'f' ), 'f exists' ); - - Reveal.slide( 1, 0 ); - assert.strictEqual( Reveal.getIndices().h, 1, 'h 1' ); - assert.strictEqual( Reveal.getIndices().v, 0, 'v 0' ); - - Reveal.slide( 1, 2 ); - assert.strictEqual( Reveal.getIndices().h, 1, 'h 1' ); - assert.strictEqual( Reveal.getIndices().v, 2, 'v 2' ); - - Reveal.slide( 0, 0 ); - assert.strictEqual( Reveal.getIndices().h, 0, 'h 0' ); - assert.strictEqual( Reveal.getIndices().v, 0, 'v 0' ); - }); - - QUnit.test( 'Reveal.getSlide', function( assert ) { - assert.equal( Reveal.getSlide( 0 ), document.querySelector( '.reveal .slides>section:first-child' ), 'gets correct first slide' ); - assert.equal( Reveal.getSlide( 1 ), document.querySelector( '.reveal .slides>section:nth-child(2)' ), 'no v index returns stack' ); - assert.equal( Reveal.getSlide( 1, 0 ), document.querySelector( '.reveal .slides>section:nth-child(2)>section:nth-child(1)' ), 'v index 0 returns first vertical child' ); - assert.equal( Reveal.getSlide( 1, 1 ), document.querySelector( '.reveal .slides>section:nth-child(2)>section:nth-child(2)' ), 'v index 1 returns second vertical child' ); - - assert.strictEqual( Reveal.getSlide( 100 ), undefined, 'undefined when out of horizontal bounds' ); - assert.strictEqual( Reveal.getSlide( 1, 100 ), undefined, 'undefined when out of vertical bounds' ); - }); - - QUnit.test( 'Reveal.getSlideBackground', function( assert ) { - assert.equal( Reveal.getSlideBackground( 0 ), document.querySelector( '.reveal .backgrounds>.slide-background:first-child' ), 'gets correct first background' ); - assert.equal( Reveal.getSlideBackground( 1 ), document.querySelector( '.reveal .backgrounds>.slide-background:nth-child(2)' ), 'no v index returns stack' ); - assert.equal( Reveal.getSlideBackground( 1, 0 ), document.querySelector( '.reveal .backgrounds>.slide-background:nth-child(2) .slide-background:nth-child(2)' ), 'v index 0 returns first vertical child' ); - assert.equal( Reveal.getSlideBackground( 1, 1 ), document.querySelector( '.reveal .backgrounds>.slide-background:nth-child(2) .slide-background:nth-child(3)' ), 'v index 1 returns second vertical child' ); - - assert.strictEqual( Reveal.getSlideBackground( 100 ), undefined, 'undefined when out of horizontal bounds' ); - assert.strictEqual( Reveal.getSlideBackground( 1, 100 ), undefined, 'undefined when out of vertical bounds' ); - }); - - QUnit.test( 'Reveal.getSlideNotes', function( assert ) { - Reveal.slide( 0, 0 ); - assert.ok( Reveal.getSlideNotes() === 'speaker notes 1', 'works with