start moving to es6
This commit is contained in:
Hakim El Hattab
parent
4b888d87b7
commit
556d6ec93d
191
js/reveal.js
191
js/reveal.js
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@ -19,27 +19,27 @@
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// Browser globals.
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root.Reveal = factory();
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}
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}( this, function() {
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}( this || window, () => {
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'use strict';
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var Reveal;
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let Reveal;
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// The reveal.js version
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var VERSION = '4.0.0-dev';
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const VERSION = '4.0.0-dev';
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var SLIDES_SELECTOR = '.slides section',
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HORIZONTAL_SLIDES_SELECTOR = '.slides>section',
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VERTICAL_SLIDES_SELECTOR = '.slides>section.present>section',
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HOME_SLIDE_SELECTOR = '.slides>section:first-of-type',
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const SLIDES_SELECTOR = '.slides section';
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const HORIZONTAL_SLIDES_SELECTOR = '.slides>section';
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const VERTICAL_SLIDES_SELECTOR = '.slides>section.present>section';
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const HOME_SLIDE_SELECTOR = '.slides>section:first-of-type';
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UA = navigator.userAgent,
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const UA = navigator.userAgent;
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// Methods that may not be invoked via the postMessage API
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POST_MESSAGE_METHOD_BLACKLIST = /registerPlugin|registerKeyboardShortcut|addKeyBinding|addEventListener/,
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// Methods that may not be invoked via the postMessage API
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const POST_MESSAGE_METHOD_BLACKLIST = /registerPlugin|registerKeyboardShortcut|addKeyBinding|addEventListener/;
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// Configuration defaults, can be overridden at initialization time
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config = {
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// Configuration defaults, can be overridden at initialization time
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let config = {
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// The "normal" size of the presentation, aspect ratio will be preserved
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// when the presentation is scaled to fit different resolutions
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@ -497,7 +497,7 @@
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( navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1 ); // iPadOS
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isChrome = /chrome/i.test( UA ) && !/edge/i.test( UA );
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var testElement = document.createElement( 'div' );
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let testElement = document.createElement( 'div' );
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features.transforms3d = 'perspective' in testElement.style;
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features.transforms2d = 'transform' in testElement.style;
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@ -528,7 +528,7 @@
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var scripts = [],
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scriptsToLoad = 0;
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config.dependencies.forEach( function( s ) {
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config.dependencies.forEach( s => {
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// Load if there's no condition or the condition is truthy
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if( !s.condition || s.condition() ) {
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if( s.async ) {
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@ -544,7 +544,7 @@
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scriptsToLoad = scripts.length;
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// Load synchronous scripts
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scripts.forEach( function( s ) {
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scripts.forEach( s => {
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loadScript( s.src, function() {
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if( typeof s.callback === 'function' ) s.callback();
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@ -2130,19 +2130,18 @@
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dom.overlay.classList.add( 'overlay-preview' );
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dom.wrapper.appendChild( dom.overlay );
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dom.overlay.innerHTML = [
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'<header>',
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'<a class="close" href="#"><span class="icon"></span></a>',
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'<a class="external" href="'+ url +'" target="_blank"><span class="icon"></span></a>',
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'</header>',
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'<div class="spinner"></div>',
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'<div class="viewport">',
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'<iframe src="'+ url +'"></iframe>',
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'<small class="viewport-inner">',
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'<span class="x-frame-error">Unable to load iframe. This is likely due to the site\'s policy (x-frame-options).</span>',
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'</small>',
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'</div>'
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].join('');
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dom.overlay.innerHTML =
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`<header>
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<a class="close" href="#"><span class="icon"></span></a>
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<a class="external" href="${url}" target="_blank"><span class="icon"></span></a>
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</header>
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<div class="spinner"></div>
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<div class="viewport">
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<iframe src="${url}"></iframe>
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<small class="viewport-inner">
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<span class="x-frame-error">Unable to load iframe. This is likely due to the site's policy (x-frame-options).</span>
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</small>
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</div>`;
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dom.overlay.querySelector( 'iframe' ).addEventListener( 'load', function( event ) {
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dom.overlay.classList.add( 'loaded' );
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@ -2203,35 +2202,35 @@
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html += '<table><th>KEY</th><th>ACTION</th>';
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for( var key in keyboardShortcuts ) {
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html += '<tr><td>' + key + '</td><td>' + keyboardShortcuts[ key ] + '</td></tr>';
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html += `<tr><td>${key}</td><td>${keyboardShortcuts[ key ]}</td></tr>`;
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}
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// Add custom key bindings that have associated descriptions
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for( var binding in registeredKeyBindings ) {
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if( registeredKeyBindings[binding].key && registeredKeyBindings[binding].description ) {
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html += '<tr><td>' + registeredKeyBindings[binding].key + '</td><td>' + registeredKeyBindings[binding].description + '</td></tr>';
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html += `<tr><td>${registeredKeyBindings[binding].key}</td><td>${registeredKeyBindings[binding].description}</td></tr>`;
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}
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}
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html += '</table>';
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dom.overlay.innerHTML = [
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'<header>',
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'<a class="close" href="#"><span class="icon"></span></a>',
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'</header>',
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'<div class="viewport">',
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'<div class="viewport-inner">'+ html +'</div>',
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'</div>'
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].join('');
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dom.overlay.innerHTML = `
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<header>
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<a class="close" href="#"><span class="icon"></span></a>
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</header>
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<div class="viewport">
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<div class="viewport-inner">${html}</div>
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</div>
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`;
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dom.overlay.querySelector( '.close' ).addEventListener( 'click', function( event ) {
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closeOverlay();
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event.preventDefault();
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}, false );
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setTimeout( function() {
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requestAnimationFrame( function() {
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dom.overlay.classList.add( 'visible' );
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}, 1 );
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} );
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}
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@ -2581,8 +2580,8 @@
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*/
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function updateOverview() {
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var vmin = Math.min( window.innerWidth, window.innerHeight );
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var scale = Math.max( vmin / 5, 150 ) / vmin;
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const vmin = Math.min( window.innerWidth, window.innerHeight );
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const scale = Math.max( vmin / 5, 150 ) / vmin;
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transformSlides( {
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overview: [
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@ -3840,14 +3839,14 @@
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autoAnimateStyleSheet.type = 'text/css';
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document.head.appendChild( autoAnimateStyleSheet );
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var animationOptions = getAutoAnimateOptions( toSlide );
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let animationOptions = getAutoAnimateOptions( toSlide );
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// Set our starting state
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fromSlide.dataset.autoAnimate = 'pending';
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toSlide.dataset.autoAnimate = 'pending';
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// Inject our auto-animate styles for this transition
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var css = getAutoAnimatableElements( fromSlide, toSlide ).map( function( elements ) {
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let css = getAutoAnimatableElements( fromSlide, toSlide ).map( function( elements ) {
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return getAutoAnimateCSS( elements.from, elements.to, elements.options || {}, animationOptions, autoAnimateCounter++ );
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} );
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@ -3857,7 +3856,7 @@
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unmatchedElement.dataset.autoAnimateTarget = 'unmatched';
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} );
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css.push( '[data-auto-animate="running"] [data-auto-animate-target="unmatched"] { transition: opacity '+ (animationOptions.duration*0.8) +'s ease '+ (animationOptions.duration*0.2) +'s; }' );
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css.push( `[data-auto-animate="running"] [data-auto-animate-target="unmatched"] { transition: opacity ${animationOptions.duration*0.8}s ease ${animationOptions.duration*0.2}s; }` );
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}
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// Setting the whole chunk of CSS at once is the most
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@ -3866,7 +3865,7 @@
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autoAnimateStyleSheet.innerHTML = css.join( '' );
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// Start the animation next cycle
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requestAnimationFrame( function() {
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requestAnimationFrame( () => {
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if( autoAnimateStyleSheet ) {
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// This forces our newly injected styles to be applied in Firefox
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getComputedStyle( autoAnimateStyleSheet ).fontWeight;
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@ -3887,7 +3886,7 @@
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*/
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function removeEphemeralAutoAnimateAttributes() {
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toArray( dom.wrapper.querySelectorAll( '[data-auto-animate-target]' ) ).forEach( function( element ) {
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toArray( dom.wrapper.querySelectorAll( '[data-auto-animate-target]' ) ).forEach( element => {
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delete element.dataset.autoAnimateTarget;
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} );
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@ -3913,7 +3912,7 @@
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// Each element may override any of the auto-animate options
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// like transition easing, duration and delay via data-attributes
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var options = getAutoAnimateOptions( to, animationOptions );
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let options = getAutoAnimateOptions( to, animationOptions );
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// If we're using a custom element matcher the element options
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// may contain additional transition overrides
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@ -3921,7 +3920,7 @@
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if( typeof elementOptions.duration !== 'undefined' ) options.duration = elementOptions.duration;
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if( typeof elementOptions.easing !== 'undefined' ) options.easing = elementOptions.easing;
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var fromProps = getAutoAnimatableProperties( 'from', from, elementOptions ),
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let fromProps = getAutoAnimatableProperties( 'from', from, elementOptions ),
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toProps = getAutoAnimatableProperties( 'to', to, elementOptions );
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// If translation and/or scaling are enabled, css transform
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@ -3929,9 +3928,9 @@
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// of the 'from' element
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if( elementOptions.translate !== false || elementOptions.scale !== false ) {
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var presentationScale = Reveal.getScale();
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let presentationScale = Reveal.getScale();
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var delta = {
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let delta = {
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x: ( fromProps.x - toProps.x ) / presentationScale,
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y: ( fromProps.y - toProps.y ) / presentationScale,
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scaleX: fromProps.width / toProps.width,
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@ -3944,13 +3943,13 @@
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delta.scaleX = Math.round( delta.scaleX * 1000 ) / 1000;
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delta.scaleX = Math.round( delta.scaleX * 1000 ) / 1000;
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var translate = elementOptions.translate !== false && ( delta.x !== 0 || delta.y !== 0 ),
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let translate = elementOptions.translate !== false && ( delta.x !== 0 || delta.y !== 0 ),
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scale = elementOptions.scale !== false && ( delta.scaleX !== 0 || delta.scaleY !== 0 );
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// No need to transform if nothing's changed
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if( translate || scale ) {
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var transform = [];
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let transform = [];
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if( translate ) transform.push( 'translate('+delta.x+'px, '+delta.y+'px)' );
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if( scale ) transform.push( 'scale('+delta.scaleX+','+delta.scaleY+')' );
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@ -3965,9 +3964,9 @@
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}
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// Delete all unchanged 'to' styles
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for( var propertyName in toProps.styles ) {
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var toValue = toProps.styles[propertyName];
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var fromValue = fromProps.styles[propertyName];
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for( let propertyName in toProps.styles ) {
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const toValue = toProps.styles[propertyName];
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const fromValue = fromProps.styles[propertyName];
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if( toValue === fromValue ) {
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delete toProps.styles[propertyName];
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@ -3985,9 +3984,9 @@
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}
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}
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var css = '';
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let css = '';
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var toStyleProperties = Object.keys( toProps.styles );
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let toStyleProperties = Object.keys( toProps.styles );
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// Only create animate this element IF at least one style
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// property has changed
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@ -3997,17 +3996,17 @@
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fromProps.styles['transition'] = 'none';
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// Animate towards the 'to' state
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toProps.styles['transition'] = 'all '+ options.duration +'s '+ options.easing + ' ' + options.delay + 's';
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toProps.styles['transition'] = `all ${options.duration}s ${options.easing} ${options.delay}s`;
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toProps.styles['transition-property'] = toStyleProperties.join( ', ' );
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toProps.styles['will-change'] = toStyleProperties.join( ', ' );
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// Build up our custom CSS. We need to override inline styles
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// so we need to make our styles vErY IMPORTANT!1!!
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var fromCSS = Object.keys( fromProps.styles ).map( function( propertyName ) {
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let fromCSS = Object.keys( fromProps.styles ).map( function( propertyName ) {
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return propertyName + ': ' + fromProps.styles[propertyName] + ' !important;';
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} ).join( '' );
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var toCSS = Object.keys( toProps.styles ).map( function( propertyName ) {
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let toCSS = Object.keys( toProps.styles ).map( function( propertyName ) {
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return propertyName + ': ' + toProps.styles[propertyName] + ' !important;';
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} ).join( '' );
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@ -4030,17 +4029,17 @@
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*/
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function getAutoAnimateOptions( element, inheritedOptions ) {
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var options = {
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let options = {
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easing: config.autoAnimateEasing,
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duration: config.autoAnimateDuration,
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delay: 0
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};
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if( inheritedOptions ) options = extend( options, inheritedOptions );
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options = {...options, ...inheritedOptions};
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// Inherit options from parent elements
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if( element.closest && element.parentNode ) {
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var autoAnimatedParent = element.parentNode.closest( '[data-auto-animate-target]' );
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let autoAnimatedParent = element.parentNode.closest( '[data-auto-animate-target]' );
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if( autoAnimatedParent ) {
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options = getAutoAnimateOptions( autoAnimatedParent, options );
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}
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@ -4071,11 +4070,11 @@
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*/
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function getAutoAnimatableProperties( direction, element, elementOptions ) {
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var properties = { styles: [] };
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let properties = { styles: [] };
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// Position and size
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if( elementOptions.translate !== false || elementOptions.scale !== false ) {
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var bounds;
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let bounds;
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// Custom auto-animate may optionally return a custom tailored
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// measurement function
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@ -4092,11 +4091,11 @@
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properties.height = bounds.height;
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}
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var computedStyles = getComputedStyle( element );
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const computedStyles = getComputedStyle( element );
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// CSS styles
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( elementOptions.styles || config.autoAnimateStyles ).forEach( function( style ) {
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var value;
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( elementOptions.styles || config.autoAnimateStyles ).forEach( style => {
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let value;
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// `style` is either the property name directly, or an object
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// definition of a style property
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@ -4134,14 +4133,14 @@
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*/
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function getAutoAnimatableElements( fromSlide, toSlide ) {
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var matcher = typeof config.autoAnimateMatcher === 'function' ? config.autoAnimateMatcher : getAutoAnimatePairs;
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let matcher = typeof config.autoAnimateMatcher === 'function' ? config.autoAnimateMatcher : getAutoAnimatePairs;
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var pairs = matcher( fromSlide, toSlide );
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let pairs = matcher( fromSlide, toSlide );
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var reserved = [];
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let reserved = [];
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// Remove duplicate pairs
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return pairs.filter( function( pair, index ) {
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return pairs.filter( ( pair, index ) => {
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if( reserved.indexOf( pair.to ) === -1 ) {
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reserved.push( pair.to );
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return true;
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@ -4158,33 +4157,33 @@
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*/
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function getAutoAnimatePairs( fromSlide, toSlide ) {
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var pairs = [];
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let pairs = [];
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var codeNodes = 'pre';
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var textNodes = 'h1, h2, h3, h4, h5, h6, p, li';
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var mediaNodes = 'img, video, iframe';
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const codeNodes = 'pre';
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const textNodes = 'h1, h2, h3, h4, h5, h6, p, li';
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const mediaNodes = 'img, video, iframe';
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// Eplicit matches via data-id
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findAutoAnimateMatches( pairs, fromSlide, toSlide, '[data-id]', function( node ) {
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findAutoAnimateMatches( pairs, fromSlide, toSlide, '[data-id]', node => {
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return node.nodeName + ':::' + node.getAttribute( 'data-id' );
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} );
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// Text
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findAutoAnimateMatches( pairs, fromSlide, toSlide, textNodes, function( node ) {
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findAutoAnimateMatches( pairs, fromSlide, toSlide, textNodes, node => {
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return node.nodeName + ':::' + node.innerText;
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} );
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// Media
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findAutoAnimateMatches( pairs, fromSlide, toSlide, mediaNodes, function( node ) {
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findAutoAnimateMatches( pairs, fromSlide, toSlide, mediaNodes, node => {
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return node.nodeName + ':::' + ( node.getAttribute( 'src' ) || node.getAttribute( 'data-src' ) );
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} );
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// Code
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findAutoAnimateMatches( pairs, fromSlide, toSlide, codeNodes, function( node ) {
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findAutoAnimateMatches( pairs, fromSlide, toSlide, codeNodes, node => {
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return node.nodeName + ':::' + node.innerText;
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} );
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pairs.forEach( function( pair ) {
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pairs.forEach( pair => {
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// Disable scale transformations on text nodes, we transiition
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// each individual text property instead
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@ -4199,7 +4198,7 @@
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pair.options = { scale: false, styles: [ 'width', 'height' ] };
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// Lines of code
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findAutoAnimateMatches( pairs, pair.from, pair.to, '.hljs .hljs-ln-code', function( node ) {
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findAutoAnimateMatches( pairs, pair.from, pair.to, '.hljs .hljs-ln-code', node => {
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return node.textContent;
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}, {
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scale: false,
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@ -4208,7 +4207,7 @@
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} );
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// Line numbers
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findAutoAnimateMatches( pairs, pair.from, pair.to, '.hljs .hljs-ln-line[data-line-number]', function( node ) {
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findAutoAnimateMatches( pairs, pair.from, pair.to, '.hljs .hljs-ln-line[data-line-number]', node => {
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return node.getAttribute( 'data-line-number' );
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}, {
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scale: false,
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@ -4233,7 +4232,7 @@
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*/
|
||||
function getLocalBoundingBox( element ) {
|
||||
|
||||
var presentationScale = Reveal.getScale();
|
||||
const presentationScale = Reveal.getScale();
|
||||
|
||||
return {
|
||||
x: Math.round( ( element.offsetLeft * presentationScale ) * 100 ) / 100,
|
||||
|
|
@ -4257,28 +4256,28 @@
|
|||
*/
|
||||
function findAutoAnimateMatches( pairs, fromScope, toScope, selector, serializer, animationOptions ) {
|
||||
|
||||
var fromMatches = {};
|
||||
var toMatches = {};
|
||||
let fromMatches = {};
|
||||
let toMatches = {};
|
||||
|
||||
[].slice.call( fromScope.querySelectorAll( selector ) ).forEach( function( element, i ) {
|
||||
var key = serializer( element );
|
||||
[].slice.call( fromScope.querySelectorAll( selector ) ).forEach( ( element, i ) => {
|
||||
const key = serializer( element );
|
||||
if( typeof key === 'string' && key.length ) {
|
||||
fromMatches[key] = fromMatches[key] || [];
|
||||
fromMatches[key].push( element );
|
||||
}
|
||||
} );
|
||||
|
||||
[].slice.call( toScope.querySelectorAll( selector ) ).forEach( function( element, i ) {
|
||||
var key = serializer( element );
|
||||
[].slice.call( toScope.querySelectorAll( selector ) ).forEach( ( element, i ) => {
|
||||
const key = serializer( element );
|
||||
toMatches[key] = toMatches[key] || [];
|
||||
toMatches[key].push( element );
|
||||
|
||||
var fromElement;
|
||||
let fromElement;
|
||||
|
||||
// Retrieve the 'from' element
|
||||
if( fromMatches[key] ) {
|
||||
var pimaryIndex = toMatches[key].length - 1;
|
||||
var secondaryIndex = fromMatches[key].length - 1;
|
||||
const pimaryIndex = toMatches[key].length - 1;
|
||||
const secondaryIndex = fromMatches[key].length - 1;
|
||||
|
||||
// If there are multiple identical from elements, retrieve
|
||||
// the one at the same index as our to-element.
|
||||
|
|
@ -4320,9 +4319,9 @@
|
|||
*/
|
||||
function getUnmatchedAutoAnimateElements( rootElement ) {
|
||||
|
||||
return [].slice.call( rootElement.children ).reduce( function( result, element ) {
|
||||
return [].slice.call( rootElement.children ).reduce( ( result, element ) => {
|
||||
|
||||
var containsAnimatedElements = element.querySelector( '[data-auto-animate-target]' );
|
||||
const containsAnimatedElements = element.querySelector( '[data-auto-animate-target]' );
|
||||
|
||||
// The element is unmatched if
|
||||
// - It is not an auto-animate target
|
||||
|
|
|
|||
Loading…
Reference in New Issue