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new controller for speaker notes

edit
Hakim El Hattab 2020-03-16 11:45:47 +01:00
parent 2b02f3a1f9
commit 97ee72549b
7 changed files with 180 additions and 144 deletions
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4
dist/reveal.min.js vendored
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File diff suppressed because one or more lines are too long

4
js/components/playback.js
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@ -1,6 +1,6 @@
/**
* Constructor for the playback component, which displays
* play/pause/progress controls.
* UI component that lets the user control pause/resume
* and see the progress of auto-slide playback.
*
* @param {HTMLElement} container The component will append
* itself to this

14
js/controllers/fragments.js
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@ -13,6 +13,20 @@ export default class Fragments {
}
/**
* Called whenever the reveal.js config is updated.
*/
configure( config, oldConfig ) {
if( config.fragments === false ) {
this.disable();
}
else if( oldConfig.fragments === false ) {
this.enable();
}
}
/**
* If fragments are disabled in the deck, they should all be
* visible rather than stepped through.

52
js/controllers/keyboard.js
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@ -21,6 +21,32 @@ export default class Keyboard {
}
/**
* Called when the reveal.js config is updated.
*/
configure( config, oldConfig ) {
if( config.navigationMode === 'linear' ) {
this.shortcuts['→ , ↓ , SPACE , N , L , J'] = 'Next slide';
this.shortcuts['← , ↑ , P , H , K'] = 'Previous slide';
}
else {
this.shortcuts['N , SPACE'] = 'Next slide';
this.shortcuts['P'] = 'Previous slide';
this.shortcuts['← , H'] = 'Navigate left';
this.shortcuts['→ , L'] = 'Navigate right';
this.shortcuts['↑ , K'] = 'Navigate up';
this.shortcuts['↓ , J'] = 'Navigate down';
}
this.shortcuts['Home , Shift ←'] = 'First slide';
this.shortcuts['End , Shift →'] = 'Last slide';
this.shortcuts['B , .'] = 'Pause';
this.shortcuts['F'] = 'Fullscreen';
this.shortcuts['ESC, O'] = 'Slide overview';
}
/**
* Starts listening for keyboard events.
*/
@ -73,32 +99,6 @@ export default class Keyboard {
}
/**
* Updates our keyboard shortcuts based on current settings.
*/
refreshSortcuts() {
if( this.Reveal.getConfig().navigationMode === 'linear' ) {
this.shortcuts['→ , ↓ , SPACE , N , L , J'] = 'Next slide';
this.shortcuts['← , ↑ , P , H , K'] = 'Previous slide';
}
else {
this.shortcuts['N , SPACE'] = 'Next slide';
this.shortcuts['P'] = 'Previous slide';
this.shortcuts['← , H'] = 'Navigate left';
this.shortcuts['→ , L'] = 'Navigate right';
this.shortcuts['↑ , K'] = 'Navigate up';
this.shortcuts['↓ , J'] = 'Navigate down';
}
this.shortcuts['Home , Shift ←'] = 'First slide';
this.shortcuts['End , Shift →'] = 'Last slide';
this.shortcuts['B , .'] = 'Pause';
this.shortcuts['F'] = 'Fullscreen';
this.shortcuts['ESC, O'] = 'Slide overview';
}
/**
* Programmatically triggers a keyboard event
*

116
js/controllers/notes.js 100644
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@ -0,0 +1,116 @@
import { extend, toArray } from '../utils/util.js'
/**
*
*/
export default class Notes {
constructor( Reveal ) {
this.Reveal = Reveal;
}
render() {
this.element = document.createElement( 'div' );
this.element.className = 'speaker-notes';
this.element.setAttribute( 'data-prevent-swipe', '' );
this.element.setAttribute( 'tabindex', '0' );
this.Reveal.getRevealElement().appendChild( this.element );
}
/**
* Called when the reveal.js config is updated.
*/
configure( config, oldConfig ) {
if( config.showNotes ) {
this.element.setAttribute( 'data-layout', typeof config.showNotes === 'string' ? config.showNotes : 'inline' );
}
}
/**
* Pick up notes from the current slide and display them
* to the viewer.
*
* @see {@link config.showNotes}
*/
update() {
if( this.Reveal.getConfig().showNotes && this.element && this.Reveal.getCurrentSlide() && !this.Reveal.print.isPrintingPDF() ) {
this.element.innerHTML = this.getSlideNotes() || '<span class="notes-placeholder">No notes on this slide.</span>';
}
}
/**
* Updates the visibility of the speaker notes sidebar that
* is used to share annotated slides. The notes sidebar is
* only visible if showNotes is true and there are notes on
* one or more slides in the deck.
*/
updateVisibility() {
if( this.Reveal.getConfig().showNotes && this.hasNotes() ) {
this.Reveal.getRevealElement().classList.add( 'show-notes' );
}
else {
this.Reveal.getRevealElement().classList.remove( 'show-notes' );
}
}
/**
* Checks if there are speaker notes for ANY slide in the
* presentation.
*/
hasNotes() {
return this.Reveal.getSlidesElement().querySelectorAll( '[data-notes], aside.notes' ).length > 0;
}
/**
* Checks if this presentation is running inside of the
* speaker notes window.
*
* @return {boolean}
*/
isSpeakerNotes() {
return !!window.location.search.match( /receiver/gi );
}
/**
* Retrieves the speaker notes from a slide. Notes can be
* defined in two ways:
* 1. As a data-notes attribute on the slide <section>
* 2. As an <aside class="notes"> inside of the slide
*
* @param {HTMLElement} [slide=currentSlide]
* @return {(string|null)}
*/
getSlideNotes( slide = this.Reveal.getCurrentSlide() ) {
// Notes can be specified via the data-notes attribute...
if( slide.hasAttribute( 'data-notes' ) ) {
return slide.getAttribute( 'data-notes' );
}
// ... or using an <aside class="notes"> element
let notesElement = slide.querySelector( 'aside.notes' );
if( notesElement ) {
return notesElement.innerHTML;
}
return null;
}
}

9
js/controllers/slidenumber.js
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@ -9,7 +9,7 @@ export default class SlideNumber {
}
createElement() {
render() {
this.element = document.createElement( 'div' );
this.element.className = 'slide-number';
@ -18,12 +18,9 @@ export default class SlideNumber {
}
/**
* Shows or hides the slide number depending on the
* current config and state.
* Called when the reveal.js config is updated.
*/
refreshVisibility() {
let config = this.Reveal.getConfig();
configure( config, oldConfig ) {
let slideNumberDisplay = 'none';
if( config.slideNumber && !this.Reveal.isPrintingPDF() ) {

125
js/reveal.js
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@ -9,6 +9,7 @@ import Location from './controllers/location.js'
import Plugins from './controllers/plugins.js'
import Print from './controllers/print.js'
import Touch from './controllers/touch.js'
import Notes from './controllers/notes.js'
import Playback from './components/playback.js'
import defaultConfig from './config.js'
import { isMobile, isChrome, isAndroid, supportsZoom } from './utils/device.js'
@ -82,6 +83,7 @@ export default function( revealElement, options ) {
plugins = new Plugins( Reveal ),
print = new Print( Reveal ),
touch = new Touch( Reveal ),
notes = new Notes( Reveal ),
// CSS transform that is currently applied to the slides container,
// split into two groups
@ -236,12 +238,10 @@ export default function( revealElement, options ) {
<button class="navigate-down" aria-label="below slide"><div class="controls-arrow"></div></button>` );
// Slide number
slideNumber.createElement();
slideNumber.render();
// Element containing notes that are visible to the audience
dom.speakerNotes = createSingletonNode( dom.wrapper, 'div', 'speaker-notes', null );
dom.speakerNotes.setAttribute( 'data-prevent-swipe', '' );
dom.speakerNotes.setAttribute( 'tabindex', '0' );
// Slide notes
notes.render();
// Overlay graphic which is displayed during the paused mode
dom.pauseOverlay = createSingletonNode( dom.wrapper, 'div', 'pause-overlay', config.controls ? '<button class="resume-button">Resume presentation</button>' : null );
@ -452,10 +452,6 @@ export default function( revealElement, options ) {
resume();
}
if( config.showNotes ) {
dom.speakerNotes.setAttribute( 'data-layout', typeof config.showNotes === 'string' ? config.showNotes : 'inline' );
}
if( config.mouseWheel ) {
document.addEventListener( 'DOMMouseScroll', onDocumentMouseScroll, false ); // FF
document.addEventListener( 'mousewheel', onDocumentMouseScroll, false );
@ -506,14 +502,6 @@ export default function( revealElement, options ) {
autoSlidePaused = false;
}
// Update the state of our fragments
if( config.fragments === false ) {
fragments.disable();
}
else if( oldConfig.fragments === false ) {
fragments.enable();
}
// Add the navigation mode to the DOM so we can adjust styling
if( config.navigationMode !== 'default' ) {
dom.wrapper.setAttribute( 'data-navigation-mode', config.navigationMode );
@ -522,8 +510,10 @@ export default function( revealElement, options ) {
dom.wrapper.removeAttribute( 'data-navigation-mode' );
}
slideNumber.refreshVisibility();
keyboard.refreshSortcuts();
notes.configure( config, oldConfig );
fragments.configure( config, oldConfig );
slideNumber.configure( config, oldConfig );
keyboard.configure( config, oldConfig );
sync();
@ -1409,11 +1399,10 @@ export default function( revealElement, options ) {
updateControls();
updateProgress();
updateNotes();
notes.update();
backgrounds.update();
backgrounds.updateParallax();
slideNumber.update();
fragments.update();
@ -1475,9 +1464,9 @@ export default function( revealElement, options ) {
updateControls();
updateProgress();
updateSlidesVisibility();
updateNotesVisibility();
updateNotes();
notes.update();
notes.updateVisibility();
backgrounds.update( true );
slideNumber.update();
slideContent.formatEmbeddedContent();
@ -1514,7 +1503,7 @@ export default function( revealElement, options ) {
slideContent.load( slide );
backgrounds.update();
updateNotes();
notes.update();
}
@ -1767,49 +1756,6 @@ export default function( revealElement, options ) {
}
/**
* Pick up notes from the current slide and display them
* to the viewer.
*
* @see {@link config.showNotes}
*/
function updateNotes() {
if( config.showNotes && dom.speakerNotes && currentSlide && !print.isPrintingPDF() ) {
dom.speakerNotes.innerHTML = getSlideNotes() || '<span class="notes-placeholder">No notes on this slide.</span>';
}
}
/**
* Updates the visibility of the speaker notes sidebar that
* is used to share annotated slides. The notes sidebar is
* only visible if showNotes is true and there are notes on
* one or more slides in the deck.
*/
function updateNotesVisibility() {
if( config.showNotes && hasNotes() ) {
dom.wrapper.classList.add( 'show-notes' );
}
else {
dom.wrapper.classList.remove( 'show-notes' );
}
}
/**
* Checks if there are speaker notes for ANY slide in the
* presentation.
*/
function hasNotes() {
return dom.slides.querySelectorAll( '[data-notes], aside.notes' ).length > 0;
}
/**
* Updates the progress bar to reflect the current slide.
*/
@ -2036,18 +1982,6 @@ export default function( revealElement, options ) {
}
/**
* Checks if this presentation is running inside of the
* speaker notes window.
*
* @return {boolean}
*/
function isSpeakerNotes() {
return !!window.location.search.match( /receiver/gi );
}
/**
* Retrieves the h/v location and fragment of the current,
* or specified, slide.
@ -2227,32 +2161,6 @@ export default function( revealElement, options ) {
}
/**
* Retrieves the speaker notes from a slide. Notes can be
* defined in two ways:
* 1. As a data-notes attribute on the slide <section>
* 2. As an <aside class="notes"> inside of the slide
*
* @param {HTMLElement} [slide=currentSlide]
* @return {(string|null)}
*/
function getSlideNotes( slide = currentSlide ) {
// Notes can be specified via the data-notes attribute...
if( slide.hasAttribute( 'data-notes' ) ) {
return slide.getAttribute( 'data-notes' );
}
// ... or using an <aside class="notes"> element
let notesElement = slide.querySelector( 'aside.notes' );
if( notesElement ) {
return notesElement.innerHTML;
}
return null;
}
/**
* Retrieves the current state of the presentation as
* an object. This state can then be restored at any
@ -2789,7 +2697,7 @@ export default function( revealElement, options ) {
// State checks
isPaused,
isAutoSliding,
isSpeakerNotes,
isSpeakerNotes: notes.isSpeakerNotes.bind( notes ),
isOverview: overview.isActive.bind( overview ),
isPrintingPDF: print.isPrintingPDF.bind( print ),
@ -2832,7 +2740,7 @@ export default function( revealElement, options ) {
getSlideBackground,
// Returns the speaker notes string for a slide, or null
getSlideNotes,
getSlideNotes: notes.getSlideNotes.bind( notes ),
// Returns an array with all horizontal/vertical slides in the deck
getHorizontalSlides,
@ -2876,7 +2784,7 @@ export default function( revealElement, options ) {
// Helper method, retrieves query string as a key:value map
getQueryHash,
// Returns the top-level DOM element
// Returns reveal.js DOM elements
getRevealElement: () => dom.wrapper || document.querySelector( '.reveal' ),
getSlidesElement: () => dom.slides,
getBackgroundsElement: () => dom.background,
@ -2892,6 +2800,7 @@ export default function( revealElement, options ) {
announceStatus,
getStatusText,
print,
location,
overview,
fragments,