From 3683ad255dc377f2532225a6a60d362648241bd1 Mon Sep 17 00:00:00 2001 From: Hakim El Hattab Date: Tue, 10 Mar 2020 21:08:11 +0100 Subject: [PATCH] add slidenumber & location controllers --- dist/reveal.min.js | 2 +- js/controllers/keyboard.js | 8 +- js/controllers/location.js | 51 +++++++++ js/controllers/slidenumber.js | 128 ++++++++++++++++++++++ js/reveal.js | 199 ++++------------------------------ js/utils/util.js | 36 ++++++ 6 files changed, 240 insertions(+), 184 deletions(-) create mode 100644 js/controllers/location.js create mode 100644 js/controllers/slidenumber.js diff --git a/dist/reveal.min.js b/dist/reveal.min.js index 9751da2..fe72d29 100644 --- a/dist/reveal.min.js +++ b/dist/reveal.min.js @@ -5,4 +5,4 @@ * * Copyright (C) 2020 Hakim El Hattab, https://hakim.se */ -!function(e){var t={};function a(i){if(t[i])return t[i].exports;var n=t[i]={i:i,l:!1,exports:{}};return 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slide.getAttribute( 'id' ) : null; + if( id ) { + id = encodeURIComponent( id ); + } + + let index = this.Reveal.getIndices( slide ); + if( !this.Reveal.getConfig().fragmentInURL ) { + index.f = undefined; + } + + // If the current slide has an ID, use that as a named link, + // but we don't support named links with a fragment index + if( typeof id === 'string' && id.length && index.f === undefined ) { + url = '/' + id; + } + // Otherwise use the /h/v index + else { + let hashIndexBase = this.Reveal.getConfig().hashOneBasedIndex ? 1 : 0; + if( index.h > 0 || index.v > 0 || index.f !== undefined ) url += index.h + hashIndexBase; + if( index.v > 0 || index.f !== undefined ) url += '/' + (index.v + hashIndexBase ); + if( index.f !== undefined ) url += '/' + index.f; + } + + return url; + + } + +} \ No newline at end of file diff --git a/js/controllers/slidenumber.js b/js/controllers/slidenumber.js new file mode 100644 index 0000000..a2beeef --- /dev/null +++ b/js/controllers/slidenumber.js @@ -0,0 +1,128 @@ +import { enterFullscreen } from '../utils/util.js' + +/** + * Handles all reveal.js keyboard interactions. + */ +export default class SlideNumber { + + constructor( Reveal ) { + + this.Reveal = Reveal; + + } + + createElement() { + + this.element = document.createElement( 'div' ); + this.element.className = 'slide-number'; + this.Reveal.getRevealElement().appendChild( this.element ); + + } + + /** + * Shows or hides the slide number depending on the + * current config and state. + */ + refreshVisibility() { + + let config = this.Reveal.getConfig(); + + let slideNumberDisplay = 'none'; + if( config.slideNumber && !this.Reveal.isPrintingPDF() ) { + if( config.showSlideNumber === 'all' ) { + slideNumberDisplay = 'block'; + } + else if( config.showSlideNumber === 'speaker' && this.Reveal.isSpeakerNotes() ) { + slideNumberDisplay = 'block'; + } + } + + this.element.style.display = slideNumberDisplay; + + } + + /** + * Updates the slide number to match the current slide. + */ + update() { + + // Update slide number if enabled + if( this.Reveal.getConfig().slideNumber && this.element ) { + this.element.innerHTML = this.getSlideNumber(); + } + + } + + /** + * Returns the HTML string corresponding to the current slide + * number, including formatting. + */ + getSlideNumber( slide = this.Reveal.getCurrentSlide() ) { + + let config = this.Reveal.getConfig(); + let value; + let format = 'h.v'; + + if ( typeof config.slideNumber === 'function' ) { + value = config.slideNumber( slide ); + } else { + // Check if a custom number format is available + if( typeof config.slideNumber === 'string' ) { + format = config.slideNumber; + } + + // If there are ONLY vertical slides in this deck, always use + // a flattened slide number + if( !/c/.test( format ) && this.Reveal.getHorizontalSlides().length === 1 ) { + format = 'c'; + } + + value = []; + switch( format ) { + case 'c': + value.push( this.Reveal.getSlidePastCount( slide ) + 1 ); + break; + case 'c/t': + value.push( this.Reveal.getSlidePastCount( slide ) + 1, '/', this.Reveal.getTotalSlides() ); + break; + default: + let indices = this.Reveal.getIndices( slide ); + value.push( indices.h + 1 ); + let sep = format === 'h/v' ? '/' : '.'; + if( this.Reveal.isVerticalSlide( slide ) ) value.push( sep, indices.v + 1 ); + } + } + + let url = '#' + this.Reveal.location.getHash( slide ); + return this.formatNumber( value[0], value[1], value[2], url ); + + } + + /** + * Applies HTML formatting to a slide number before it's + * written to the DOM. + * + * @param {number} a Current slide + * @param {string} delimiter Character to separate slide numbers + * @param {(number|*)} b Total slides + * @param {HTMLElement} [url='#'+locationHash()] The url to link to + * @return {string} HTML string fragment + */ + formatNumber( a, delimiter, b, url = '#' + this.Reveal.location.getHash() ) { + + if( typeof b === 'number' && !isNaN( b ) ) { + return ` + ${a} + ${delimiter} + ${b} + `; + } + else { + return ` + ${a} + `; + } + + } + +} \ No newline at end of file diff --git a/js/reveal.js b/js/reveal.js index e09f9c7..d5b7968 100644 --- a/js/reveal.js +++ b/js/reveal.js @@ -1,8 +1,10 @@ import SlideContent from './controllers/slidecontent.js' +import SlideNumber from './controllers/slidenumber.js' import AutoAnimate from './controllers/autoanimate.js' import Fragments from './controllers/fragments.js' import Overview from './controllers/overview.js' import Keyboard from './controllers/keyboard.js' +import Location from './controllers/location.js' import Plugins from './controllers/plugins.js' import Playback from './components/playback.js' import defaultConfig from './config.js' @@ -18,6 +20,7 @@ import { distanceBetween, deserialize, transformElement, + createSingletonNode, createStyleSheet, closestParent, enterFullscreen, @@ -81,6 +84,9 @@ export default function( revealElement, options ) { // Controls loading and playback of slide content slideContent = new SlideContent( Reveal ), + // Controls the optional slide number display + slideNumber = new SlideNumber( Reveal ), + // Controls auto-animations between slides autoAnimate = new AutoAnimate( Reveal ), @@ -93,6 +99,9 @@ export default function( revealElement, options ) { // Controls all keyboard interactions keyboard = new Keyboard( Reveal ), + // Controls the current location/URL + location = new Location( Reveal ), + // List of asynchronously loaded reveal.js dependencies asyncDependencies = [], @@ -248,7 +257,7 @@ export default function( revealElement, options ) { ` ); // Slide number - dom.slideNumber = createSingletonNode( dom.wrapper, 'div', 'slide-number', '' ); + slideNumber.createElement(); // Element containing notes that are visible to the audience dom.speakerNotes = createSingletonNode( dom.wrapper, 'div', 'speaker-notes', null ); @@ -377,7 +386,7 @@ export default function( revealElement, options ) { // Compute slide numbers now, before we start duplicating slides let doingSlideNumbers = config.slideNumber && /all|print/i.test( config.showSlideNumber ); toArray( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) ).forEach( function( slide ) { - slide.setAttribute( 'data-slide-number', getSlideNumber( slide ) ); + slide.setAttribute( 'data-slide-number', slideNumber.getSlideNumber( slide ) ); } ); // Slide and slide background layout @@ -534,42 +543,6 @@ export default function( revealElement, options ) { } - /** - * Creates an HTML element and returns a reference to it. - * If the element already exists the existing instance will - * be returned. - * - * @param {HTMLElement} container - * @param {string} tagname - * @param {string} classname - * @param {string} innerHTML - * - * @return {HTMLElement} - */ - function createSingletonNode( container, tagname, classname, innerHTML='' ) { - - // Find all nodes matching the description - let nodes = container.querySelectorAll( '.' + classname ); - - // Check all matches to find one which is a direct child of - // the specified container - for( let i = 0; i < nodes.length; i++ ) { - let testNode = nodes[i]; - if( testNode.parentNode === container ) { - return testNode; - } - } - - // If no node was found, create it now - let node = document.createElement( tagname ); - node.className = classname; - node.innerHTML = innerHTML; - container.appendChild( node ); - - return node; - - } - /** * Creates the slide background elements and appends them * to the background container. One element is created per @@ -831,9 +804,8 @@ export default function( revealElement, options ) { const numberOfSlides = dom.wrapper.querySelectorAll( SLIDES_SELECTOR ).length; - // Remove the previously configured transition class + // The transition is added as a class on the .reveal element dom.wrapper.classList.remove( oldTransition ); - dom.wrapper.classList.add( config.transition ); dom.wrapper.setAttribute( 'data-transition-speed', config.transitionSpeed ); @@ -927,19 +899,6 @@ export default function( revealElement, options ) { fragments.showAll(); } - // Slide numbers - let slideNumberDisplay = 'none'; - if( config.slideNumber && !isPrintingPDF() ) { - if( config.showSlideNumber === 'all' ) { - slideNumberDisplay = 'block'; - } - else if( config.showSlideNumber === 'speaker' && isSpeakerNotes() ) { - slideNumberDisplay = 'block'; - } - } - - dom.slideNumber.style.display = slideNumberDisplay; - // Add the navigation mode to the DOM so we can adjust styling if( config.navigationMode !== 'default' ) { dom.wrapper.setAttribute( 'data-navigation-mode', config.navigationMode ); @@ -948,6 +907,7 @@ export default function( revealElement, options ) { dom.wrapper.removeAttribute( 'data-navigation-mode' ); } + slideNumber.refreshVisibility(); keyboard.refreshSortcuts(); sync(); @@ -1551,44 +1511,6 @@ export default function( revealElement, options ) { } - /** - * Return a hash URL that will resolve to the given slide location. - * - * @param {HTMLElement} [slide=currentSlide] The slide to link to - */ - function locationHash( slide ) { - - let url = '/'; - - // Attempt to create a named link based on the slide's ID - let s = slide || currentSlide; - let id = s ? s.getAttribute( 'id' ) : null; - if( id ) { - id = encodeURIComponent( id ); - } - - let index = getIndices( slide ); - if( !config.fragmentInURL ) { - index.f = undefined; - } - - // If the current slide has an ID, use that as a named link, - // but we don't support named links with a fragment index - if( typeof id === 'string' && id.length && index.f === undefined ) { - url = '/' + id; - } - // Otherwise use the /h/v index - else { - let hashIndexBase = config.hashOneBasedIndex ? 1 : 0; - if( index.h > 0 || index.v > 0 || index.f !== undefined ) url += index.h + hashIndexBase; - if( index.v > 0 || index.f !== undefined ) url += '/' + (index.v + hashIndexBase ); - if( index.f !== undefined ) url += '/' + index.f; - } - - return url; - - } - /** * Checks if the current or specified slide is vertical * (nested within another slide). @@ -1908,9 +1830,9 @@ export default function( revealElement, options ) { updateProgress(); updateBackground(); updateParallax(); - updateSlideNumber(); updateNotes(); + slideNumber.update(); fragments.update(); // Update the URL hash @@ -1970,12 +1892,12 @@ export default function( revealElement, options ) { updateControls(); updateProgress(); - updateSlideNumber(); updateSlidesVisibility(); updateBackground( true ); updateNotesVisibility(); updateNotes(); + slideNumber.update(); slideContent.formatEmbeddedContent(); // Start or stop embedded content depending on global config @@ -2322,90 +2244,6 @@ export default function( revealElement, options ) { } - - /** - * Updates the slide number to match the current slide. - */ - function updateSlideNumber() { - - // Update slide number if enabled - if( config.slideNumber && dom.slideNumber ) { - dom.slideNumber.innerHTML = getSlideNumber(); - } - - } - - /** - * Returns the HTML string corresponding to the current slide number, - * including formatting. - */ - function getSlideNumber( slide = currentSlide ) { - - let value; - let format = 'h.v'; - - if ( typeof config.slideNumber === 'function' ) { - value = config.slideNumber( slide ); - } else { - // Check if a custom number format is available - if( typeof config.slideNumber === 'string' ) { - format = config.slideNumber; - } - - // If there are ONLY vertical slides in this deck, always use - // a flattened slide number - if( !/c/.test( format ) && dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ).length === 1 ) { - format = 'c'; - } - - value = []; - switch( format ) { - case 'c': - value.push( getSlidePastCount( slide ) + 1 ); - break; - case 'c/t': - value.push( getSlidePastCount( slide ) + 1, '/', getTotalSlides() ); - break; - default: - let indices = getIndices( slide ); - value.push( indices.h + 1 ); - let sep = format === 'h/v' ? '/' : '.'; - if( isVerticalSlide( slide ) ) value.push( sep, indices.v + 1 ); - } - } - - let url = '#' + locationHash( slide ); - return formatSlideNumber( value[0], value[1], value[2], url ); - - } - - /** - * Applies HTML formatting to a slide number before it's - * written to the DOM. - * - * @param {number} a Current slide - * @param {string} delimiter Character to separate slide numbers - * @param {(number|*)} b Total slides - * @param {HTMLElement} [url='#'+locationHash()] The url to link to - * @return {string} HTML string fragment - */ - function formatSlideNumber( a, delimiter, b, url = '#' + locationHash() ) { - - if( typeof b === 'number' && !isNaN( b ) ) { - return ` - ${a} - ${delimiter} - ${b} - `; - } - else { - return ` - ${a} - `; - } - - } - /** * Updates the state of all control/navigation arrows. */ @@ -2881,12 +2719,12 @@ export default function( revealElement, options ) { // If we're configured to push to history OR the history // API is not avaialble. if( config.history || !window.history ) { - window.location.hash = locationHash(); + window.location.hash = location.getHash(); } // If we're configured to reflect the current slide in the // URL without pushing to history. else if( config.hash ) { - window.history.replaceState( null, null, '#' + locationHash() ); + window.history.replaceState( null, null, '#' + location.getHash() ); } // If history and hash are both disabled, a hash may still // be added to the URL by clicking on a href with a hash @@ -3810,12 +3648,14 @@ export default function( revealElement, options ) { isFirstSlide, isLastSlide, isLastVerticalSlide, + isVerticalSlide, // State checks isOverview: overview.isActive.bind( overview ), isPaused, isAutoSliding, isSpeakerNotes, + isPrintingPDF, // Slide preloading loadSlide: slideContent.load.bind( slideContent ), @@ -3916,6 +3756,7 @@ export default function( revealElement, options ) { announceStatus, getStatusText, + location, overview, slideContent, onUserInput, diff --git a/js/utils/util.js b/js/utils/util.js index b96578f..e2118e2 100644 --- a/js/utils/util.js +++ b/js/utils/util.js @@ -135,6 +135,42 @@ export const enterFullscreen = () => { } +/** + * Creates an HTML element and returns a reference to it. + * If the element already exists the existing instance will + * be returned. + * + * @param {HTMLElement} container + * @param {string} tagname + * @param {string} classname + * @param {string} innerHTML + * + * @return {HTMLElement} + */ +export const createSingletonNode = ( container, tagname, classname, innerHTML='' ) => { + + // Find all nodes matching the description + let nodes = container.querySelectorAll( '.' + classname ); + + // Check all matches to find one which is a direct child of + // the specified container + for( let i = 0; i < nodes.length; i++ ) { + let testNode = nodes[i]; + if( testNode.parentNode === container ) { + return testNode; + } + } + + // If no node was found, create it now + let node = document.createElement( tagname ); + node.className = classname; + node.innerHTML = innerHTML; + container.appendChild( node ); + + return node; + +} + /** * Injects the given CSS styles into the DOM. *