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es6 refactoring

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This commit is contained in:
Hakim El Hattab 2020-03-07 11:58:18 +01:00
parent 4cfd254086
commit dd852851ef
2 changed files with 55 additions and 55 deletions
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106
js/reveal.js
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@ -204,7 +204,7 @@ export default function( revealElement, options ) {
*/ */
function load() { function load() {
var scripts = [], let scripts = [],
scriptsToLoad = 0; scriptsToLoad = 0;
config.dependencies.forEach( s => { config.dependencies.forEach( s => {
@ -224,7 +224,7 @@ export default function( revealElement, options ) {
// Load synchronous scripts // Load synchronous scripts
scripts.forEach( s => { scripts.forEach( s => {
loadScript( s.src, function() { loadScript( s.src, () => {
if( typeof s.callback === 'function' ) s.callback(); if( typeof s.callback === 'function' ) s.callback();
@ -541,14 +541,14 @@ export default function( revealElement, options ) {
*/ */
function setupPDF() { function setupPDF() {
var slideSize = getComputedSlideSize( window.innerWidth, window.innerHeight ); let slideSize = getComputedSlideSize( window.innerWidth, window.innerHeight );
// Dimensions of the PDF pages // Dimensions of the PDF pages
var pageWidth = Math.floor( slideSize.width * ( 1 + config.margin ) ), let pageWidth = Math.floor( slideSize.width * ( 1 + config.margin ) ),
pageHeight = Math.floor( slideSize.height * ( 1 + config.margin ) ); pageHeight = Math.floor( slideSize.height * ( 1 + config.margin ) );
// Dimensions of slides within the pages // Dimensions of slides within the pages
var slideWidth = slideSize.width, let slideWidth = slideSize.width,
slideHeight = slideSize.height; slideHeight = slideSize.height;
// Let the browser know what page size we want to print // Let the browser know what page size we want to print
@ -565,7 +565,7 @@ export default function( revealElement, options ) {
layoutSlideContents( slideWidth, slideHeight ); layoutSlideContents( slideWidth, slideHeight );
// Compute slide numbers now, before we start duplicating slides // Compute slide numbers now, before we start duplicating slides
var doingSlideNumbers = config.slideNumber && /all|print/i.test( config.showSlideNumber ); let doingSlideNumbers = config.slideNumber && /all|print/i.test( config.showSlideNumber );
toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ).forEach( function( slide ) { toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ).forEach( function( slide ) {
slide.setAttribute( 'data-slide-number', getSlideNumber( slide ) ); slide.setAttribute( 'data-slide-number', getSlideNumber( slide ) );
} ); } );
@ -577,11 +577,11 @@ export default function( revealElement, options ) {
// children will be // children will be
if( slide.classList.contains( 'stack' ) === false ) { if( slide.classList.contains( 'stack' ) === false ) {
// Center the slide inside of the page, giving the slide some margin // Center the slide inside of the page, giving the slide some margin
var left = ( pageWidth - slideWidth ) / 2, let left = ( pageWidth - slideWidth ) / 2,
top = ( pageHeight - slideHeight ) / 2; top = ( pageHeight - slideHeight ) / 2;
var contentHeight = slide.scrollHeight; let contentHeight = slide.scrollHeight;
var numberOfPages = Math.max( Math.ceil( contentHeight / pageHeight ), 1 ); let numberOfPages = Math.max( Math.ceil( contentHeight / pageHeight ), 1 );
// Adhere to configured pages per slide limit // Adhere to configured pages per slide limit
numberOfPages = Math.min( numberOfPages, config.pdfMaxPagesPerSlide ); numberOfPages = Math.min( numberOfPages, config.pdfMaxPagesPerSlide );
@ -593,7 +593,7 @@ export default function( revealElement, options ) {
// Wrap the slide in a page element and hide its overflow // Wrap the slide in a page element and hide its overflow
// so that no page ever flows onto another // so that no page ever flows onto another
var page = document.createElement( 'div' ); let page = document.createElement( 'div' );
page.className = 'pdf-page'; page.className = 'pdf-page';
page.style.height = ( ( pageHeight + config.pdfPageHeightOffset ) * numberOfPages ) + 'px'; page.style.height = ( ( pageHeight + config.pdfPageHeightOffset ) * numberOfPages ) + 'px';
slide.parentNode.insertBefore( page, slide ); slide.parentNode.insertBefore( page, slide );
@ -612,12 +612,12 @@ export default function( revealElement, options ) {
if( config.showNotes ) { if( config.showNotes ) {
// Are there notes for this slide? // Are there notes for this slide?
var notes = getSlideNotes( slide ); let notes = getSlideNotes( slide );
if( notes ) { if( notes ) {
var notesSpacing = 8; let notesSpacing = 8;
var notesLayout = typeof config.showNotes === 'string' ? config.showNotes : 'inline'; let notesLayout = typeof config.showNotes === 'string' ? config.showNotes : 'inline';
var notesElement = document.createElement( 'div' ); let notesElement = document.createElement( 'div' );
notesElement.classList.add( 'speaker-notes' ); notesElement.classList.add( 'speaker-notes' );
notesElement.classList.add( 'speaker-notes-pdf' ); notesElement.classList.add( 'speaker-notes-pdf' );
notesElement.setAttribute( 'data-layout', notesLayout ); notesElement.setAttribute( 'data-layout', notesLayout );
@ -639,7 +639,7 @@ export default function( revealElement, options ) {
// Inject slide numbers if `slideNumbers` are enabled // Inject slide numbers if `slideNumbers` are enabled
if( doingSlideNumbers ) { if( doingSlideNumbers ) {
var numberElement = document.createElement( 'div' ); let numberElement = document.createElement( 'div' );
numberElement.classList.add( 'slide-number' ); numberElement.classList.add( 'slide-number' );
numberElement.classList.add( 'slide-number-pdf' ); numberElement.classList.add( 'slide-number-pdf' );
numberElement.innerHTML = slide.getAttribute( 'data-slide-number' ); numberElement.innerHTML = slide.getAttribute( 'data-slide-number' );
@ -652,10 +652,10 @@ export default function( revealElement, options ) {
// Each fragment 'group' is an array containing one or more // Each fragment 'group' is an array containing one or more
// fragments. Multiple fragments that appear at the same time // fragments. Multiple fragments that appear at the same time
// are part of the same group. // are part of the same group.
var fragmentGroups = sortFragments( page.querySelectorAll( '.fragment' ), true ); let fragmentGroups = sortFragments( page.querySelectorAll( '.fragment' ), true );
var previousFragmentStep; let previousFragmentStep;
var previousPage; let previousPage;
fragmentGroups.forEach( function( fragments ) { fragmentGroups.forEach( function( fragments ) {
@ -672,7 +672,7 @@ export default function( revealElement, options ) {
} ); } );
// Create a separate page for the current fragment state // Create a separate page for the current fragment state
var clonedPage = page.cloneNode( true ); let clonedPage = page.cloneNode( true );
page.parentNode.insertBefore( clonedPage, ( previousPage || page ).nextSibling ); page.parentNode.insertBefore( clonedPage, ( previousPage || page ).nextSibling );
previousFragmentStep = fragments; previousFragmentStep = fragments;
@ -983,7 +983,7 @@ export default function( revealElement, options ) {
if( POST_MESSAGE_METHOD_BLACKLIST.test( data.method ) === false ) { if( POST_MESSAGE_METHOD_BLACKLIST.test( data.method ) === false ) {
var result = Reveal[data.method].apply( Reveal, data.args ); const result = Reveal[data.method].apply( Reveal, data.args );
// Dispatch a postMessage event with the returned value from // Dispatch a postMessage event with the returned value from
// our method invocation for getter functions // our method invocation for getter functions
@ -1095,7 +1095,7 @@ export default function( revealElement, options ) {
} }
// Reset all auto animated elements // Reset all auto animated elements
toArray( dom.slides.querySelectorAll( '[data-auto-animate]:not([data-auto-animate=""])' ) ).forEach( function( element ) { toArray( dom.slides.querySelectorAll( '[data-auto-animate]:not([data-auto-animate=""])' ) ).forEach( element => {
element.dataset.autoAnimate = ''; element.dataset.autoAnimate = '';
} ); } );
@ -1231,13 +1231,13 @@ export default function( revealElement, options ) {
pointerEvents = [ 'touchstart' ]; pointerEvents = [ 'touchstart' ];
} }
pointerEvents.forEach( function( eventName ) { pointerEvents.forEach( eventName => {
dom.controlsLeft.forEach( function( el ) { el.addEventListener( eventName, onNavigateLeftClicked, false ); } ); dom.controlsLeft.forEach( el => el.addEventListener( eventName, onNavigateLeftClicked, false ) );
dom.controlsRight.forEach( function( el ) { el.addEventListener( eventName, onNavigateRightClicked, false ); } ); dom.controlsRight.forEach( el => el.addEventListener( eventName, onNavigateRightClicked, false ) );
dom.controlsUp.forEach( function( el ) { el.addEventListener( eventName, onNavigateUpClicked, false ); } ); dom.controlsUp.forEach( el => el.addEventListener( eventName, onNavigateUpClicked, false ) );
dom.controlsDown.forEach( function( el ) { el.addEventListener( eventName, onNavigateDownClicked, false ); } ); dom.controlsDown.forEach( el => el.addEventListener( eventName, onNavigateDownClicked, false ) );
dom.controlsPrev.forEach( function( el ) { el.addEventListener( eventName, onNavigatePrevClicked, false ); } ); dom.controlsPrev.forEach( el => el.addEventListener( eventName, onNavigatePrevClicked, false ) );
dom.controlsNext.forEach( function( el ) { el.addEventListener( eventName, onNavigateNextClicked, false ); } ); dom.controlsNext.forEach( el => el.addEventListener( eventName, onNavigateNextClicked, false ) );
} ); } );
} }
@ -1272,13 +1272,13 @@ export default function( revealElement, options ) {
dom.progress.removeEventListener( 'click', onProgressClicked, false ); dom.progress.removeEventListener( 'click', onProgressClicked, false );
} }
[ 'touchstart', 'click' ].forEach( function( eventName ) { [ 'touchstart', 'click' ].forEach( eventName => {
dom.controlsLeft.forEach( function( el ) { el.removeEventListener( eventName, onNavigateLeftClicked, false ); } ); dom.controlsLeft.forEach( el => el.removeEventListener( eventName, onNavigateLeftClicked, false ) );
dom.controlsRight.forEach( function( el ) { el.removeEventListener( eventName, onNavigateRightClicked, false ); } ); dom.controlsRight.forEach( el => el.removeEventListener( eventName, onNavigateRightClicked, false ) );
dom.controlsUp.forEach( function( el ) { el.removeEventListener( eventName, onNavigateUpClicked, false ); } ); dom.controlsUp.forEach( el => el.removeEventListener( eventName, onNavigateUpClicked, false ) );
dom.controlsDown.forEach( function( el ) { el.removeEventListener( eventName, onNavigateDownClicked, false ); } ); dom.controlsDown.forEach( el => el.removeEventListener( eventName, onNavigateDownClicked, false ) );
dom.controlsPrev.forEach( function( el ) { el.removeEventListener( eventName, onNavigatePrevClicked, false ); } ); dom.controlsPrev.forEach( el => el.removeEventListener( eventName, onNavigatePrevClicked, false ) );
dom.controlsNext.forEach( function( el ) { el.removeEventListener( eventName, onNavigateNextClicked, false ); } ); dom.controlsNext.forEach( el => el.removeEventListener( eventName, onNavigateNextClicked, false ) );
} ); } );
} }
@ -1576,12 +1576,12 @@ export default function( revealElement, options ) {
let html = '<p class="title">Keyboard Shortcuts</p><br/>'; let html = '<p class="title">Keyboard Shortcuts</p><br/>';
html += '<table><th>KEY</th><th>ACTION</th>'; html += '<table><th>KEY</th><th>ACTION</th>';
for( var key in keyboardShortcuts ) { for( let key in keyboardShortcuts ) {
html += `<tr><td>${key}</td><td>${keyboardShortcuts[ key ]}</td></tr>`; html += `<tr><td>${key}</td><td>${keyboardShortcuts[ key ]}</td></tr>`;
} }
// Add custom key bindings that have associated descriptions // Add custom key bindings that have associated descriptions
for( var binding in registeredKeyBindings ) { for( let binding in registeredKeyBindings ) {
if( registeredKeyBindings[binding].key && registeredKeyBindings[binding].description ) { if( registeredKeyBindings[binding].key && registeredKeyBindings[binding].description ) {
html += `<tr><td>${registeredKeyBindings[binding].key}</td><td>${registeredKeyBindings[binding].description}</td></tr>`; html += `<tr><td>${registeredKeyBindings[binding].key}</td><td>${registeredKeyBindings[binding].description}</td></tr>`;
} }
@ -1598,7 +1598,7 @@ export default function( revealElement, options ) {
</div> </div>
`; `;
dom.overlay.querySelector( '.close' ).addEventListener( 'click', function( event ) { dom.overlay.querySelector( '.close' ).addEventListener( 'click', event => {
closeOverlay(); closeOverlay();
event.preventDefault(); event.preventDefault();
}, false ); }, false );
@ -1696,7 +1696,7 @@ export default function( revealElement, options ) {
// Select all slides, vertical and horizontal // Select all slides, vertical and horizontal
const slides = toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ); const slides = toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) );
for( var i = 0, len = slides.length; i < len; i++ ) { for( let i = 0, len = slides.length; i < len; i++ ) {
const slide = slides[ i ]; const slide = slides[ i ];
// Don't bother updating invisible slides // Don't bother updating invisible slides
@ -1753,7 +1753,7 @@ export default function( revealElement, options ) {
toArray( dom.slides.querySelectorAll( 'section > .stretch' ) ).forEach( element => { toArray( dom.slides.querySelectorAll( 'section > .stretch' ) ).forEach( element => {
// Determine how much vertical space we can use // Determine how much vertical space we can use
var remainingHeight = getRemainingHeight( element, height ); let remainingHeight = getRemainingHeight( element, height );
// Consider the aspect ratio of media elements // Consider the aspect ratio of media elements
if( /(img|video)/gi.test( element.nodeName ) ) { if( /(img|video)/gi.test( element.nodeName ) ) {
@ -2475,7 +2475,7 @@ export default function( revealElement, options ) {
*/ */
function resetVerticalSlides() { function resetVerticalSlides() {
getHorizontalSlides().forEach( function( horizontalSlide ) { getHorizontalSlides().forEach( horizontalSlide => {
toArray( horizontalSlide.querySelectorAll( 'section' ) ).forEach( ( verticalSlide, y ) => { toArray( horizontalSlide.querySelectorAll( 'section' ) ).forEach( ( verticalSlide, y ) => {
@ -3149,13 +3149,13 @@ export default function( revealElement, options ) {
toSlide.dataset.autoAnimate = 'pending'; toSlide.dataset.autoAnimate = 'pending';
// Inject our auto-animate styles for this transition // Inject our auto-animate styles for this transition
let css = getAutoAnimatableElements( fromSlide, toSlide ).map( function( elements ) { let css = getAutoAnimatableElements( fromSlide, toSlide ).map( elements => {
return getAutoAnimateCSS( elements.from, elements.to, elements.options || {}, animationOptions, autoAnimateCounter++ ); return getAutoAnimateCSS( elements.from, elements.to, elements.options || {}, animationOptions, autoAnimateCounter++ );
} ); } );
// Animate unmatched elements, if enabled // Animate unmatched elements, if enabled
if( toSlide.dataset.autoAnimateUnmatched !== 'false' && config.autoAnimateUnmatched === true ) { if( toSlide.dataset.autoAnimateUnmatched !== 'false' && config.autoAnimateUnmatched === true ) {
getUnmatchedAutoAnimateElements( toSlide ).forEach( function( unmatchedElement ) { getUnmatchedAutoAnimateElements( toSlide ).forEach( unmatchedElement => {
unmatchedElement.dataset.autoAnimateTarget = 'unmatched'; unmatchedElement.dataset.autoAnimateTarget = 'unmatched';
} ); } );
@ -3305,11 +3305,11 @@ export default function( revealElement, options ) {
// Build up our custom CSS. We need to override inline styles // Build up our custom CSS. We need to override inline styles
// so we need to make our styles vErY IMPORTANT!1!! // so we need to make our styles vErY IMPORTANT!1!!
let fromCSS = Object.keys( fromProps.styles ).map( function( propertyName ) { let fromCSS = Object.keys( fromProps.styles ).map( propertyName => {
return propertyName + ': ' + fromProps.styles[propertyName] + ' !important;'; return propertyName + ': ' + fromProps.styles[propertyName] + ' !important;';
} ).join( '' ); } ).join( '' );
let toCSS = Object.keys( toProps.styles ).map( function( propertyName ) { let toCSS = Object.keys( toProps.styles ).map( propertyName => {
return propertyName + ': ' + toProps.styles[propertyName] + ' !important;'; return propertyName + ': ' + toProps.styles[propertyName] + ' !important;';
} ).join( '' ); } ).join( '' );
@ -3686,7 +3686,7 @@ export default function( revealElement, options ) {
// Media elements with <source> children // Media elements with <source> children
toArray( slide.querySelectorAll( 'video, audio' ) ).forEach( media => { toArray( slide.querySelectorAll( 'video, audio' ) ).forEach( media => {
var sources = 0; let sources = 0;
toArray( media.querySelectorAll( 'source[data-src]' ) ).forEach( source => { toArray( media.querySelectorAll( 'source[data-src]' ) ).forEach( source => {
source.setAttribute( 'src', source.getAttribute( 'data-src' ) ); source.setAttribute( 'src', source.getAttribute( 'data-src' ) );
@ -3831,7 +3831,7 @@ export default function( revealElement, options ) {
*/ */
function availableRoutes() { function availableRoutes() {
var horizontalSlides = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ), let horizontalSlides = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ),
verticalSlides = dom.wrapper.querySelectorAll( VERTICAL_SLIDES_SELECTOR ); verticalSlides = dom.wrapper.querySelectorAll( VERTICAL_SLIDES_SELECTOR );
let routes = { let routes = {
@ -3896,7 +3896,7 @@ export default function( revealElement, options ) {
let _appendParamToIframeSource = ( sourceAttribute, sourceURL, param ) => { let _appendParamToIframeSource = ( sourceAttribute, sourceURL, param ) => {
toArray( dom.slides.querySelectorAll( 'iframe['+ sourceAttribute +'*="'+ sourceURL +'"]' ) ).forEach( el => { toArray( dom.slides.querySelectorAll( 'iframe['+ sourceAttribute +'*="'+ sourceURL +'"]' ) ).forEach( el => {
var src = el.getAttribute( sourceAttribute ); let src = el.getAttribute( sourceAttribute );
if( src && src.indexOf( param ) === -1 ) { if( src && src.indexOf( param ) === -1 ) {
el.setAttribute( sourceAttribute, src + ( !/\?/.test( src ) ? '?' : '&' ) + param ); el.setAttribute( sourceAttribute, src + ( !/\?/.test( src ) ? '?' : '&' ) + param );
} }
@ -3959,7 +3959,7 @@ export default function( revealElement, options ) {
// If autoplay does not work, ensure that the controls are visible so // If autoplay does not work, ensure that the controls are visible so
// that the viewer can start the media on their own // that the viewer can start the media on their own
if( promise && typeof promise.catch === 'function' && el.controls === false ) { if( promise && typeof promise.catch === 'function' && el.controls === false ) {
promise.catch( function() { promise.catch( () => {
el.controls = true; el.controls = true;
// Once the video does start playing, hide the controls again // Once the video does start playing, hide the controls again
@ -4435,7 +4435,7 @@ export default function( revealElement, options ) {
*/ */
function getSlidesAttributes() { function getSlidesAttributes() {
return getSlides().map( function( slide ) { return getSlides().map( slide => {
let attributes = {}; let attributes = {};
for( let i = 0; i < slide.attributes.length; i++ ) { for( let i = 0; i < slide.attributes.length; i++ ) {
@ -4557,7 +4557,7 @@ export default function( revealElement, options ) {
if( typeof state === 'object' ) { if( typeof state === 'object' ) {
slide( deserialize( state.indexh ), deserialize( state.indexv ), deserialize( state.indexf ) ); slide( deserialize( state.indexh ), deserialize( state.indexv ), deserialize( state.indexf ) );
var pausedFlag = deserialize( state.paused ), let pausedFlag = deserialize( state.paused ),
overviewFlag = deserialize( state.overview ); overviewFlag = deserialize( state.overview );
if( typeof pausedFlag === 'boolean' && pausedFlag !== isPaused() ) { if( typeof pausedFlag === 'boolean' && pausedFlag !== isPaused() ) {
@ -5167,7 +5167,7 @@ export default function( revealElement, options ) {
// Check if this binding matches the pressed key // Check if this binding matches the pressed key
if( parseInt( key, 10 ) === keyCode ) { if( parseInt( key, 10 ) === keyCode ) {
var value = config.keyboard[ key ]; let value = config.keyboard[ key ];
// Callback function // Callback function
if( typeof value === 'function' ) { if( typeof value === 'function' ) {
@ -5613,7 +5613,7 @@ export default function( revealElement, options ) {
deactivateOverview(); deactivateOverview();
if( element.nodeName.match( /section/gi ) ) { if( element.nodeName.match( /section/gi ) ) {
var h = parseInt( element.getAttribute( 'data-index-h' ), 10 ), let h = parseInt( element.getAttribute( 'data-index-h' ), 10 ),
v = parseInt( element.getAttribute( 'data-index-v' ), 10 ); v = parseInt( element.getAttribute( 'data-index-v' ), 10 );
slide( h, v ); slide( h, v );

4
js/utils/util.js
View File

@ -7,7 +7,7 @@
*/ */
export const extend = ( a, b ) => { export const extend = ( a, b ) => {
for( var i in b ) { for( let i in b ) {
a[ i ] = b[ i ]; a[ i ] = b[ i ];
} }
@ -57,7 +57,7 @@ export const deserialize = ( value ) => {
*/ */
export const distanceBetween = ( a, b ) => { export const distanceBetween = ( a, b ) => {
var dx = a.x - b.x, let dx = a.x - b.x,
dy = a.y - b.y; dy = a.y - b.y;
return Math.sqrt( dx*dx + dy*dy ); return Math.sqrt( dx*dx + dy*dy );