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+import SlideContent from './controllers/slidecontent.js'
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+import SlideNumber from './controllers/slidenumber.js'
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+import Backgrounds from './controllers/backgrounds.js'
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+import AutoAnimate from './controllers/autoanimate.js'
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+import Fragments from './controllers/fragments.js'
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+import Overview from './controllers/overview.js'
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+import Keyboard from './controllers/keyboard.js'
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+import Location from './controllers/location.js'
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+import Controls from './controllers/controls.js'
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+import Progress from './controllers/progress.js'
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+import Pointer from './controllers/pointer.js'
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+import Plugins from './controllers/plugins.js'
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+import Print from './controllers/print.js'
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+import Touch from './controllers/touch.js'
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+import Focus from './controllers/focus.js'
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+import Notes from './controllers/notes.js'
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+import Playback from './components/playback.js'
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+import defaultConfig from './config.js'
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+import * as Util from './utils/util.js'
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+import * as Device from './utils/device.js'
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+import {
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+ SLIDES_SELECTOR,
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+ HORIZONTAL_SLIDES_SELECTOR,
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+ VERTICAL_SLIDES_SELECTOR,
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+ POST_MESSAGE_METHOD_BLACKLIST
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+} from './utils/constants.js'
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+
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+// The reveal.js version
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+export const VERSION = '4.1.0';
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+
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+/**
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+ * reveal.js
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+ * https://revealjs.com
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+ * MIT licensed
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+ *
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+ * Copyright (C) 2020 Hakim El Hattab, https://hakim.se
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+ */
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+export default function( revealElement, options ) {
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+
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+ // Support initialization with no args, one arg
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+ // [options] or two args [revealElement, options]
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+ if( arguments.length < 2 ) {
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+ options = arguments[0];
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+ revealElement = document.querySelector( '.reveal' );
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+ }
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+
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+ const Reveal = {};
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+
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+ // Configuration defaults, can be overridden at initialization time
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+ let config = {},
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+
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+ // Flags if reveal.js is loaded (has dispatched the 'ready' event)
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+ ready = false,
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+
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+ // The horizontal and vertical index of the currently active slide
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+ indexh,
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+ indexv,
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+
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+ // The previous and current slide HTML elements
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+ previousSlide,
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+ currentSlide,
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+
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+ // Remember which directions that the user has navigated towards
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+ navigationHistory = {
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+ hasNavigatedHorizontally: false,
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+ hasNavigatedVertically: false
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+ },
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+
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+ // Slides may have a data-state attribute which we pick up and apply
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+ // as a class to the body. This list contains the combined state of
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+ // all current slides.
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+ state = [],
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+
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+ // The current scale of the presentation (see width/height config)
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+ scale = 1,
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+
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+ // CSS transform that is currently applied to the slides container,
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+ // split into two groups
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+ slidesTransform = { layout: '', overview: '' },
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+
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+ // Cached references to DOM elements
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+ dom = {},
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+
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+ // Flags if the interaction event listeners are bound
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+ eventsAreBound = false,
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+
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+ // The current slide transition state; idle or running
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+ transition = 'idle',
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+
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+ // The current auto-slide duration
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+ autoSlide = 0,
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+
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+ // Auto slide properties
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+ autoSlidePlayer,
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+ autoSlideTimeout = 0,
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+ autoSlideStartTime = -1,
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+ autoSlidePaused = false,
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+
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+ // Controllers for different aspects of our presentation. They're
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+ // all given direct references to this Reveal instance since there
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+ // may be multiple presentations running in parallel.
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+ slideContent = new SlideContent( Reveal ),
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+ slideNumber = new SlideNumber( Reveal ),
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+ autoAnimate = new AutoAnimate( Reveal ),
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+ backgrounds = new Backgrounds( Reveal ),
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+ fragments = new Fragments( Reveal ),
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+ overview = new Overview( Reveal ),
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+ keyboard = new Keyboard( Reveal ),
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+ location = new Location( Reveal ),
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+ controls = new Controls( Reveal ),
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+ progress = new Progress( Reveal ),
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+ pointer = new Pointer( Reveal ),
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+ plugins = new Plugins( Reveal ),
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+ print = new Print( Reveal ),
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+ focus = new Focus( Reveal ),
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+ touch = new Touch( Reveal ),
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+ notes = new Notes( Reveal );
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+
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+ /**
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+ * Starts up the presentation.
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+ */
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+ function initialize( initOptions ) {
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+
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+ // Cache references to key DOM elements
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+ dom.wrapper = revealElement;
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+ dom.slides = revealElement.querySelector( '.slides' );
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+
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+ // Compose our config object in order of increasing precedence:
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+ // 1. Default reveal.js options
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+ // 2. Options provided via Reveal.configure() prior to
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+ // initialization
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+ // 3. Options passed to the Reveal constructor
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+ // 4. Options passed to Reveal.initialize
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+ // 5. Query params
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+ config = { ...defaultConfig, ...config, ...options, ...initOptions, ...Util.getQueryHash() };
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+
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+ setViewport();
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+
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+ // Force a layout when the whole page, incl fonts, has loaded
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+ window.addEventListener( 'load', layout, false );
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+
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+ // Register plugins and load dependencies, then move on to #start()
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+ plugins.load( config.plugins, config.dependencies ).then( start );
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+
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+ return new Promise( resolve => Reveal.on( 'ready', resolve ) );
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+
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+ }
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+
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+ /**
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+ * Encase the presentation in a reveal.js viewport. The
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+ * extent of the viewport differs based on configuration.
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+ */
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+ function setViewport() {
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+
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+ // Embedded decks use the reveal element as their viewport
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+ if( config.embedded === true ) {
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+ dom.viewport = Util.closest( revealElement, '.reveal-viewport' ) || revealElement;
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+ }
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+ // Full-page decks use the body as their viewport
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+ else {
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+ dom.viewport = document.body;
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+ document.documentElement.classList.add( 'reveal-full-page' );
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+ }
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+
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+ dom.viewport.classList.add( 'reveal-viewport' );
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+
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+ }
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+
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+ /**
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+ * Starts up reveal.js by binding input events and navigating
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+ * to the current URL deeplink if there is one.
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+ */
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+ function start() {
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+
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+ ready = true;
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+
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+ // Remove slides hidden with data-visibility
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+ removeHiddenSlides();
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+
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+ // Make sure we've got all the DOM elements we need
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+ setupDOM();
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+
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+ // Listen to messages posted to this window
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+ setupPostMessage();
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+
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+ // Prevent the slides from being scrolled out of view
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+ setupScrollPrevention();
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+
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+ // Resets all vertical slides so that only the first is visible
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+ resetVerticalSlides();
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+
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+ // Updates the presentation to match the current configuration values
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+ configure();
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+
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+ // Read the initial hash
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+ location.readURL();
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+
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+ // Create slide backgrounds
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+ backgrounds.update( true );
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+
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+ // Notify listeners that the presentation is ready but use a 1ms
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+ // timeout to ensure it's not fired synchronously after #initialize()
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+ setTimeout( () => {
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+ // Enable transitions now that we're loaded
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+ dom.slides.classList.remove( 'no-transition' );
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+
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+ dom.wrapper.classList.add( 'ready' );
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+
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+ dispatchEvent({
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+ type: 'ready',
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+ data: {
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+ indexh,
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+ indexv,
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+ currentSlide
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+ }
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+ });
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+ }, 1 );
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+
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+ // Special setup and config is required when printing to PDF
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+ if( print.isPrintingPDF() ) {
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+ removeEventListeners();
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+
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+ // The document needs to have loaded for the PDF layout
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+ // measurements to be accurate
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+ if( document.readyState === 'complete' ) {
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+ print.setupPDF();
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+ }
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+ else {
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+ window.addEventListener( 'load', () => {
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+ print.setupPDF();
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+ } );
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+ }
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+ }
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+
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+ }
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+
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+ /**
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+ * Removes all slides with data-visibility="hidden". This
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+ * is done right before the rest of the presentation is
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+ * initialized.
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+ *
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+ * If you want to show all hidden slides, initialize
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+ * reveal.js with showHiddenSlides set to true.
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+ */
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+ function removeHiddenSlides() {
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+
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+ if( !config.showHiddenSlides ) {
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+ Util.queryAll( dom.wrapper, 'section[data-visibility="hidden"]' ).forEach( slide => {
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+ slide.parentNode.removeChild( slide );
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+ } );
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+ }
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+
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+ }
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+
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+ /**
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+ * Finds and stores references to DOM elements which are
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+ * required by the presentation. If a required element is
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+ * not found, it is created.
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+ */
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+ function setupDOM() {
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+
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+ // Prevent transitions while we're loading
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+ dom.slides.classList.add( 'no-transition' );
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+
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+ if( Device.isMobile ) {
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+ dom.wrapper.classList.add( 'no-hover' );
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+ }
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+ else {
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+ dom.wrapper.classList.remove( 'no-hover' );
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+ }
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+
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+ backgrounds.render();
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+ slideNumber.render();
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+ controls.render();
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+ progress.render();
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+ notes.render();
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+
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+ // Overlay graphic which is displayed during the paused mode
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+ dom.pauseOverlay = Util.createSingletonNode( dom.wrapper, 'div', 'pause-overlay', config.controls ? '<button class="resume-button">Resume presentation</button>' : null );
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+
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+ dom.statusElement = createStatusElement();
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+
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+ dom.wrapper.setAttribute( 'role', 'application' );
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+ }
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+
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+ /**
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+ * Creates a hidden div with role aria-live to announce the
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+ * current slide content. Hide the div off-screen to make it
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+ * available only to Assistive Technologies.
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+ *
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+ * @return {HTMLElement}
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+ */
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+ function createStatusElement() {
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+
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+ let statusElement = dom.wrapper.querySelector( '.aria-status' );
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+ if( !statusElement ) {
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+ statusElement = document.createElement( 'div' );
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+ statusElement.style.position = 'absolute';
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+ statusElement.style.height = '1px';
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+ statusElement.style.width = '1px';
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+ statusElement.style.overflow = 'hidden';
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+ statusElement.style.clip = 'rect( 1px, 1px, 1px, 1px )';
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+ statusElement.classList.add( 'aria-status' );
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+ statusElement.setAttribute( 'aria-live', 'polite' );
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+ statusElement.setAttribute( 'aria-atomic','true' );
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+ dom.wrapper.appendChild( statusElement );
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+ }
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+ return statusElement;
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+
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+ }
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+
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+ /**
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+ * Announces the given text to screen readers.
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+ */
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+ function announceStatus( value ) {
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+
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+ dom.statusElement.textContent = value;
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+
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+ }
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+
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+ /**
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+ * Converts the given HTML element into a string of text
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+ * that can be announced to a screen reader. Hidden
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+ * elements are excluded.
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+ */
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+ function getStatusText( node ) {
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+
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+ let text = '';
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+
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+ // Text node
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+ if( node.nodeType === 3 ) {
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+ text += node.textContent;
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+ }
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+ // Element node
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+ else if( node.nodeType === 1 ) {
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+
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+ let isAriaHidden = node.getAttribute( 'aria-hidden' );
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+ let isDisplayHidden = window.getComputedStyle( node )['display'] === 'none';
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+ if( isAriaHidden !== 'true' && !isDisplayHidden ) {
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+
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+ Array.from( node.childNodes ).forEach( child => {
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+ text += getStatusText( child );
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+ } );
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+
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+ }
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+
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+ }
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+
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+ text = text.trim();
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+
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+ return text === '' ? '' : text + ' ';
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+
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+ }
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+
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+ /**
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+ * This is an unfortunate necessity. Some actions – such as
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+ * an input field being focused in an iframe or using the
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+ * keyboard to expand text selection beyond the bounds of
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+ * a slide – can trigger our content to be pushed out of view.
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+ * This scrolling can not be prevented by hiding overflow in
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+ * CSS (we already do) so we have to resort to repeatedly
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+ * checking if the slides have been offset :(
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+ */
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+ function setupScrollPrevention() {
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+
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+ setInterval( () => {
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+ if( dom.wrapper.scrollTop !== 0 || dom.wrapper.scrollLeft !== 0 ) {
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+ dom.wrapper.scrollTop = 0;
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+ dom.wrapper.scrollLeft = 0;
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+ }
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+ }, 1000 );
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+
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+ }
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+
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+ /**
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+ * Registers a listener to postMessage events, this makes it
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+ * possible to call all reveal.js API methods from another
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+ * window. For example:
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+ *
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+ * revealWindow.postMessage( JSON.stringify({
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+ * method: 'slide',
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+ * args: [ 2 ]
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+ * }), '*' );
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+ */
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+ function setupPostMessage() {
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+
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+ if( config.postMessage ) {
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+ window.addEventListener( 'message', event => {
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+ let data = event.data;
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+
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+ // Make sure we're dealing with JSON
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+ if( typeof data === 'string' && data.charAt( 0 ) === '{' && data.charAt( data.length - 1 ) === '}' ) {
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+ data = JSON.parse( data );
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+
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+ // Check if the requested method can be found
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+ if( data.method && typeof Reveal[data.method] === 'function' ) {
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+
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+ if( POST_MESSAGE_METHOD_BLACKLIST.test( data.method ) === false ) {
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+
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+ const result = Reveal[data.method].apply( Reveal, data.args );
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+
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+ // Dispatch a postMessage event with the returned value from
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+ // our method invocation for getter functions
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+ dispatchPostMessage( 'callback', { method: data.method, result: result } );
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+
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+ }
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+ else {
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+ console.warn( 'reveal.js: "'+ data.method +'" is is blacklisted from the postMessage API' );
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+ }
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+
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+ }
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+ }
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+ }, false );
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+ }
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+
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+ }
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+
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+ /**
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+ * Applies the configuration settings from the config
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+ * object. May be called multiple times.
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+ *
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+ * @param {object} options
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+ */
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+ function configure( options ) {
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+
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+ const oldConfig = { ...config }
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+
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+ // New config options may be passed when this method
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+ // is invoked through the API after initialization
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+ if( typeof options === 'object' ) Util.extend( config, options );
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+
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+ // Abort if reveal.js hasn't finished loading, config
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+ // changes will be applied automatically once ready
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+ if( Reveal.isReady() === false ) return;
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+
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+ const numberOfSlides = dom.wrapper.querySelectorAll( SLIDES_SELECTOR ).length;
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+
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+ // The transition is added as a class on the .reveal element
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+ dom.wrapper.classList.remove( oldConfig.transition );
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+ dom.wrapper.classList.add( config.transition );
|
|
|
+
|
|
|
+ dom.wrapper.setAttribute( 'data-transition-speed', config.transitionSpeed );
|
|
|
+ dom.wrapper.setAttribute( 'data-background-transition', config.backgroundTransition );
|
|
|
+
|
|
|
+ // Expose our configured slide dimensions as custom props
|
|
|
+ dom.viewport.style.setProperty( '--slide-width', config.width + 'px' );
|
|
|
+ dom.viewport.style.setProperty( '--slide-height', config.height + 'px' );
|
|
|
+
|
|
|
+ if( config.shuffle ) {
|
|
|
+ shuffle();
|
|
|
+ }
|
|
|
+
|
|
|
+ Util.toggleClass( dom.wrapper, 'embedded', config.embedded );
|
|
|
+ Util.toggleClass( dom.wrapper, 'rtl', config.rtl );
|
|
|
+ Util.toggleClass( dom.wrapper, 'center', config.center );
|
|
|
+
|
|
|
+ // Exit the paused mode if it was configured off
|
|
|
+ if( config.pause === false ) {
|
|
|
+ resume();
|
|
|
+ }
|
|
|
+
|
|
|
+ // Iframe link previews
|
|
|
+ if( config.previewLinks ) {
|
|
|
+ enablePreviewLinks();
|
|
|
+ disablePreviewLinks( '[data-preview-link=false]' );
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ disablePreviewLinks();
|
|
|
+ enablePreviewLinks( '[data-preview-link]:not([data-preview-link=false])' );
|
|
|
+ }
|
|
|
+
|
|
|
+ // Reset all changes made by auto-animations
|
|
|
+ autoAnimate.reset();
|
|
|
+
|
|
|
+ // Remove existing auto-slide controls
|
|
|
+ if( autoSlidePlayer ) {
|
|
|
+ autoSlidePlayer.destroy();
|
|
|
+ autoSlidePlayer = null;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Generate auto-slide controls if needed
|
|
|
+ if( numberOfSlides > 1 && config.autoSlide && config.autoSlideStoppable ) {
|
|
|
+ autoSlidePlayer = new Playback( dom.wrapper, () => {
|
|
|
+ return Math.min( Math.max( ( Date.now() - autoSlideStartTime ) / autoSlide, 0 ), 1 );
|
|
|
+ } );
|
|
|
+
|
|
|
+ autoSlidePlayer.on( 'click', onAutoSlidePlayerClick );
|
|
|
+ autoSlidePaused = false;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Add the navigation mode to the DOM so we can adjust styling
|
|
|
+ if( config.navigationMode !== 'default' ) {
|
|
|
+ dom.wrapper.setAttribute( 'data-navigation-mode', config.navigationMode );
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ dom.wrapper.removeAttribute( 'data-navigation-mode' );
|
|
|
+ }
|
|
|
+
|
|
|
+ notes.configure( config, oldConfig );
|
|
|
+ focus.configure( config, oldConfig );
|
|
|
+ pointer.configure( config, oldConfig );
|
|
|
+ controls.configure( config, oldConfig );
|
|
|
+ progress.configure( config, oldConfig );
|
|
|
+ keyboard.configure( config, oldConfig );
|
|
|
+ fragments.configure( config, oldConfig );
|
|
|
+ slideNumber.configure( config, oldConfig );
|
|
|
+
|
|
|
+ sync();
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Binds all event listeners.
|
|
|
+ */
|
|
|
+ function addEventListeners() {
|
|
|
+
|
|
|
+ eventsAreBound = true;
|
|
|
+
|
|
|
+ window.addEventListener( 'resize', onWindowResize, false );
|
|
|
+
|
|
|
+ if( config.touch ) touch.bind();
|
|
|
+ if( config.keyboard ) keyboard.bind();
|
|
|
+ if( config.progress ) progress.bind();
|
|
|
+ if( config.respondToHashChanges ) location.bind();
|
|
|
+ controls.bind();
|
|
|
+ focus.bind();
|
|
|
+
|
|
|
+ dom.slides.addEventListener( 'transitionend', onTransitionEnd, false );
|
|
|
+ dom.pauseOverlay.addEventListener( 'click', resume, false );
|
|
|
+
|
|
|
+ if( config.focusBodyOnPageVisibilityChange ) {
|
|
|
+ document.addEventListener( 'visibilitychange', onPageVisibilityChange, false );
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Unbinds all event listeners.
|
|
|
+ */
|
|
|
+ function removeEventListeners() {
|
|
|
+
|
|
|
+ eventsAreBound = false;
|
|
|
+
|
|
|
+ touch.unbind();
|
|
|
+ focus.unbind();
|
|
|
+ keyboard.unbind();
|
|
|
+ controls.unbind();
|
|
|
+ progress.unbind();
|
|
|
+ location.unbind();
|
|
|
+
|
|
|
+ window.removeEventListener( 'resize', onWindowResize, false );
|
|
|
+
|
|
|
+ dom.slides.removeEventListener( 'transitionend', onTransitionEnd, false );
|
|
|
+ dom.pauseOverlay.removeEventListener( 'click', resume, false );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Adds a listener to one of our custom reveal.js events,
|
|
|
+ * like slidechanged.
|
|
|
+ */
|
|
|
+ function on( type, listener, useCapture ) {
|
|
|
+
|
|
|
+ revealElement.addEventListener( type, listener, useCapture );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Unsubscribes from a reveal.js event.
|
|
|
+ */
|
|
|
+ function off( type, listener, useCapture ) {
|
|
|
+
|
|
|
+ revealElement.removeEventListener( type, listener, useCapture );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Applies CSS transforms to the slides container. The container
|
|
|
+ * is transformed from two separate sources: layout and the overview
|
|
|
+ * mode.
|
|
|
+ *
|
|
|
+ * @param {object} transforms
|
|
|
+ */
|
|
|
+ function transformSlides( transforms ) {
|
|
|
+
|
|
|
+ // Pick up new transforms from arguments
|
|
|
+ if( typeof transforms.layout === 'string' ) slidesTransform.layout = transforms.layout;
|
|
|
+ if( typeof transforms.overview === 'string' ) slidesTransform.overview = transforms.overview;
|
|
|
+
|
|
|
+ // Apply the transforms to the slides container
|
|
|
+ if( slidesTransform.layout ) {
|
|
|
+ Util.transformElement( dom.slides, slidesTransform.layout + ' ' + slidesTransform.overview );
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ Util.transformElement( dom.slides, slidesTransform.overview );
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Dispatches an event of the specified type from the
|
|
|
+ * reveal DOM element.
|
|
|
+ */
|
|
|
+ function dispatchEvent({ target=dom.wrapper, type, data, bubbles=true }) {
|
|
|
+
|
|
|
+ let event = document.createEvent( 'HTMLEvents', 1, 2 );
|
|
|
+ event.initEvent( type, bubbles, true );
|
|
|
+ Util.extend( event, data );
|
|
|
+ target.dispatchEvent( event );
|
|
|
+
|
|
|
+ if( target === dom.wrapper ) {
|
|
|
+ // If we're in an iframe, post each reveal.js event to the
|
|
|
+ // parent window. Used by the notes plugin
|
|
|
+ dispatchPostMessage( type );
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Dispatched a postMessage of the given type from our window.
|
|
|
+ */
|
|
|
+ function dispatchPostMessage( type, data ) {
|
|
|
+
|
|
|
+ if( config.postMessageEvents && window.parent !== window.self ) {
|
|
|
+ let message = {
|
|
|
+ namespace: 'reveal',
|
|
|
+ eventName: type,
|
|
|
+ state: getState()
|
|
|
+ };
|
|
|
+
|
|
|
+ Util.extend( message, data );
|
|
|
+
|
|
|
+ window.parent.postMessage( JSON.stringify( message ), '*' );
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Bind preview frame links.
|
|
|
+ *
|
|
|
+ * @param {string} [selector=a] - selector for anchors
|
|
|
+ */
|
|
|
+ function enablePreviewLinks( selector = 'a' ) {
|
|
|
+
|
|
|
+ Array.from( dom.wrapper.querySelectorAll( selector ) ).forEach( element => {
|
|
|
+ if( /^(http|www)/gi.test( element.getAttribute( 'href' ) ) ) {
|
|
|
+ element.addEventListener( 'click', onPreviewLinkClicked, false );
|
|
|
+ }
|
|
|
+ } );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Unbind preview frame links.
|
|
|
+ */
|
|
|
+ function disablePreviewLinks( selector = 'a' ) {
|
|
|
+
|
|
|
+ Array.from( dom.wrapper.querySelectorAll( selector ) ).forEach( element => {
|
|
|
+ if( /^(http|www)/gi.test( element.getAttribute( 'href' ) ) ) {
|
|
|
+ element.removeEventListener( 'click', onPreviewLinkClicked, false );
|
|
|
+ }
|
|
|
+ } );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Opens a preview window for the target URL.
|
|
|
+ *
|
|
|
+ * @param {string} url - url for preview iframe src
|
|
|
+ */
|
|
|
+ function showPreview( url ) {
|
|
|
+
|
|
|
+ closeOverlay();
|
|
|
+
|
|
|
+ dom.overlay = document.createElement( 'div' );
|
|
|
+ dom.overlay.classList.add( 'overlay' );
|
|
|
+ dom.overlay.classList.add( 'overlay-preview' );
|
|
|
+ dom.wrapper.appendChild( dom.overlay );
|
|
|
+
|
|
|
+ dom.overlay.innerHTML =
|
|
|
+ `<header>
|
|
|
+ <a class="close" href="#"><span class="icon"></span></a>
|
|
|
+ <a class="external" href="${url}" target="_blank"><span class="icon"></span></a>
|
|
|
+ </header>
|
|
|
+ <div class="spinner"></div>
|
|
|
+ <div class="viewport">
|
|
|
+ <iframe src="${url}"></iframe>
|
|
|
+ <small class="viewport-inner">
|
|
|
+ <span class="x-frame-error">Unable to load iframe. This is likely due to the site's policy (x-frame-options).</span>
|
|
|
+ </small>
|
|
|
+ </div>`;
|
|
|
+
|
|
|
+ dom.overlay.querySelector( 'iframe' ).addEventListener( 'load', event => {
|
|
|
+ dom.overlay.classList.add( 'loaded' );
|
|
|
+ }, false );
|
|
|
+
|
|
|
+ dom.overlay.querySelector( '.close' ).addEventListener( 'click', event => {
|
|
|
+ closeOverlay();
|
|
|
+ event.preventDefault();
|
|
|
+ }, false );
|
|
|
+
|
|
|
+ dom.overlay.querySelector( '.external' ).addEventListener( 'click', event => {
|
|
|
+ closeOverlay();
|
|
|
+ }, false );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Open or close help overlay window.
|
|
|
+ *
|
|
|
+ * @param {Boolean} [override] Flag which overrides the
|
|
|
+ * toggle logic and forcibly sets the desired state. True means
|
|
|
+ * help is open, false means it's closed.
|
|
|
+ */
|
|
|
+ function toggleHelp( override ){
|
|
|
+
|
|
|
+ if( typeof override === 'boolean' ) {
|
|
|
+ override ? showHelp() : closeOverlay();
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ if( dom.overlay ) {
|
|
|
+ closeOverlay();
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ showHelp();
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Opens an overlay window with help material.
|
|
|
+ */
|
|
|
+ function showHelp() {
|
|
|
+
|
|
|
+ if( config.help ) {
|
|
|
+
|
|
|
+ closeOverlay();
|
|
|
+
|
|
|
+ dom.overlay = document.createElement( 'div' );
|
|
|
+ dom.overlay.classList.add( 'overlay' );
|
|
|
+ dom.overlay.classList.add( 'overlay-help' );
|
|
|
+ dom.wrapper.appendChild( dom.overlay );
|
|
|
+
|
|
|
+ let html = '<p class="title">Keyboard Shortcuts</p><br/>';
|
|
|
+
|
|
|
+ let shortcuts = keyboard.getShortcuts(),
|
|
|
+ bindings = keyboard.getBindings();
|
|
|
+
|
|
|
+ html += '<table><th>KEY</th><th>ACTION</th>';
|
|
|
+ for( let key in shortcuts ) {
|
|
|
+ html += `<tr><td>${key}</td><td>${shortcuts[ key ]}</td></tr>`;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Add custom key bindings that have associated descriptions
|
|
|
+ for( let binding in bindings ) {
|
|
|
+ if( bindings[binding].key && bindings[binding].description ) {
|
|
|
+ html += `<tr><td>${bindings[binding].key}</td><td>${bindings[binding].description}</td></tr>`;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ html += '</table>';
|
|
|
+
|
|
|
+ dom.overlay.innerHTML = `
|
|
|
+ <header>
|
|
|
+ <a class="close" href="#"><span class="icon"></span></a>
|
|
|
+ </header>
|
|
|
+ <div class="viewport">
|
|
|
+ <div class="viewport-inner">${html}</div>
|
|
|
+ </div>
|
|
|
+ `;
|
|
|
+
|
|
|
+ dom.overlay.querySelector( '.close' ).addEventListener( 'click', event => {
|
|
|
+ closeOverlay();
|
|
|
+ event.preventDefault();
|
|
|
+ }, false );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Closes any currently open overlay.
|
|
|
+ */
|
|
|
+ function closeOverlay() {
|
|
|
+
|
|
|
+ if( dom.overlay ) {
|
|
|
+ dom.overlay.parentNode.removeChild( dom.overlay );
|
|
|
+ dom.overlay = null;
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+
|
|
|
+ return false;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Applies JavaScript-controlled layout rules to the
|
|
|
+ * presentation.
|
|
|
+ */
|
|
|
+ function layout() {
|
|
|
+
|
|
|
+ if( dom.wrapper && !print.isPrintingPDF() ) {
|
|
|
+
|
|
|
+ if( !config.disableLayout ) {
|
|
|
+
|
|
|
+ // On some mobile devices '100vh' is taller than the visible
|
|
|
+ // viewport which leads to part of the presentation being
|
|
|
+ // cut off. To work around this we define our own '--vh' custom
|
|
|
+ // property where 100x adds up to the correct height.
|
|
|
+ //
|
|
|
+ // https://css-tricks.com/the-trick-to-viewport-units-on-mobile/
|
|
|
+ if( Device.isMobile && !config.embedded ) {
|
|
|
+ document.documentElement.style.setProperty( '--vh', ( window.innerHeight * 0.01 ) + 'px' );
|
|
|
+ }
|
|
|
+
|
|
|
+ const size = getComputedSlideSize();
|
|
|
+
|
|
|
+ const oldScale = scale;
|
|
|
+
|
|
|
+ // Layout the contents of the slides
|
|
|
+ layoutSlideContents( config.width, config.height );
|
|
|
+
|
|
|
+ dom.slides.style.width = size.width + 'px';
|
|
|
+ dom.slides.style.height = size.height + 'px';
|
|
|
+
|
|
|
+ // Determine scale of content to fit within available space
|
|
|
+ scale = Math.min( size.presentationWidth / size.width, size.presentationHeight / size.height );
|
|
|
+
|
|
|
+ // Respect max/min scale settings
|
|
|
+ scale = Math.max( scale, config.minScale );
|
|
|
+ scale = Math.min( scale, config.maxScale );
|
|
|
+
|
|
|
+ // Don't apply any scaling styles if scale is 1
|
|
|
+ if( scale === 1 ) {
|
|
|
+ dom.slides.style.zoom = '';
|
|
|
+ dom.slides.style.left = '';
|
|
|
+ dom.slides.style.top = '';
|
|
|
+ dom.slides.style.bottom = '';
|
|
|
+ dom.slides.style.right = '';
|
|
|
+ transformSlides( { layout: '' } );
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ // Zoom Scaling
|
|
|
+ // Content remains crisp no matter how much we scale. Side
|
|
|
+ // 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 && Device.supportsZoom && window.devicePixelRatio < 2 ) {
|
|
|
+ dom.slides.style.zoom = scale;
|
|
|
+ dom.slides.style.left = '';
|
|
|
+ dom.slides.style.top = '';
|
|
|
+ dom.slides.style.bottom = '';
|
|
|
+ dom.slides.style.right = '';
|
|
|
+ transformSlides( { layout: '' } );
|
|
|
+ }
|
|
|
+ // Transform Scaling
|
|
|
+ // Content layout remains the exact same when scaled up.
|
|
|
+ // Side effect is content becoming blurred, especially with
|
|
|
+ // high scale values on ldpi screens.
|
|
|
+ else {
|
|
|
+ dom.slides.style.zoom = '';
|
|
|
+ dom.slides.style.left = '50%';
|
|
|
+ dom.slides.style.top = '50%';
|
|
|
+ dom.slides.style.bottom = 'auto';
|
|
|
+ dom.slides.style.right = 'auto';
|
|
|
+ transformSlides( { layout: 'translate(-50%, -50%) scale('+ scale +')' } );
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ // Select all slides, vertical and horizontal
|
|
|
+ const slides = Array.from( dom.wrapper.querySelectorAll( SLIDES_SELECTOR ) );
|
|
|
+
|
|
|
+ for( let i = 0, len = slides.length; i < len; i++ ) {
|
|
|
+ const slide = slides[ i ];
|
|
|
+
|
|
|
+ // Don't bother updating invisible slides
|
|
|
+ if( slide.style.display === 'none' ) {
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+ if( config.center || slide.classList.contains( 'center' ) ) {
|
|
|
+ // Vertical stacks are not centred since their section
|
|
|
+ // children will be
|
|
|
+ if( slide.classList.contains( 'stack' ) ) {
|
|
|
+ slide.style.top = 0;
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ slide.style.top = Math.max( ( size.height - slide.scrollHeight ) / 2, 0 ) + 'px';
|
|
|
+ }
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ slide.style.top = '';
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ if( oldScale !== scale ) {
|
|
|
+ dispatchEvent({
|
|
|
+ type: 'resize',
|
|
|
+ data: {
|
|
|
+ oldScale,
|
|
|
+ scale,
|
|
|
+ size
|
|
|
+ }
|
|
|
+ });
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ progress.update();
|
|
|
+ backgrounds.updateParallax();
|
|
|
+
|
|
|
+ if( overview.isActive() ) {
|
|
|
+ overview.update();
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Applies layout logic to the contents of all slides in
|
|
|
+ * the presentation.
|
|
|
+ *
|
|
|
+ * @param {string|number} width
|
|
|
+ * @param {string|number} height
|
|
|
+ */
|
|
|
+ function layoutSlideContents( width, height ) {
|
|
|
+
|
|
|
+ // Handle sizing of elements with the 'r-stretch' class
|
|
|
+ Util.queryAll( dom.slides, 'section > .stretch, section > .r-stretch' ).forEach( element => {
|
|
|
+
|
|
|
+ // Determine how much vertical space we can use
|
|
|
+ let remainingHeight = Util.getRemainingHeight( element, height );
|
|
|
+
|
|
|
+ // Consider the aspect ratio of media elements
|
|
|
+ if( /(img|video)/gi.test( element.nodeName ) ) {
|
|
|
+ const nw = element.naturalWidth || element.videoWidth,
|
|
|
+ nh = element.naturalHeight || element.videoHeight;
|
|
|
+
|
|
|
+ const es = Math.min( width / nw, remainingHeight / nh );
|
|
|
+
|
|
|
+ element.style.width = ( nw * es ) + 'px';
|
|
|
+ element.style.height = ( nh * es ) + 'px';
|
|
|
+
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ element.style.width = width + 'px';
|
|
|
+ element.style.height = remainingHeight + 'px';
|
|
|
+ }
|
|
|
+
|
|
|
+ } );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Calculates the computed pixel size of our slides. These
|
|
|
+ * values are based on the width and height configuration
|
|
|
+ * options.
|
|
|
+ *
|
|
|
+ * @param {number} [presentationWidth=dom.wrapper.offsetWidth]
|
|
|
+ * @param {number} [presentationHeight=dom.wrapper.offsetHeight]
|
|
|
+ */
|
|
|
+ function getComputedSlideSize( presentationWidth, presentationHeight ) {
|
|
|
+
|
|
|
+ const size = {
|
|
|
+ // Slide size
|
|
|
+ width: config.width,
|
|
|
+ height: config.height,
|
|
|
+
|
|
|
+ // Presentation size
|
|
|
+ presentationWidth: presentationWidth || dom.wrapper.offsetWidth,
|
|
|
+ presentationHeight: presentationHeight || dom.wrapper.offsetHeight
|
|
|
+ };
|
|
|
+
|
|
|
+ // Reduce available space by margin
|
|
|
+ size.presentationWidth -= ( size.presentationWidth * config.margin );
|
|
|
+ size.presentationHeight -= ( size.presentationHeight * config.margin );
|
|
|
+
|
|
|
+ // Slide width may be a percentage of available width
|
|
|
+ if( typeof size.width === 'string' && /%$/.test( size.width ) ) {
|
|
|
+ size.width = parseInt( size.width, 10 ) / 100 * size.presentationWidth;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Slide height may be a percentage of available height
|
|
|
+ if( typeof size.height === 'string' && /%$/.test( size.height ) ) {
|
|
|
+ size.height = parseInt( size.height, 10 ) / 100 * size.presentationHeight;
|
|
|
+ }
|
|
|
+
|
|
|
+ return size;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Stores the vertical index of a stack so that the same
|
|
|
+ * vertical slide can be selected when navigating to and
|
|
|
+ * from the stack.
|
|
|
+ *
|
|
|
+ * @param {HTMLElement} stack The vertical stack element
|
|
|
+ * @param {string|number} [v=0] Index to memorize
|
|
|
+ */
|
|
|
+ function setPreviousVerticalIndex( stack, v ) {
|
|
|
+
|
|
|
+ if( typeof stack === 'object' && typeof stack.setAttribute === 'function' ) {
|
|
|
+ stack.setAttribute( 'data-previous-indexv', v || 0 );
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Retrieves the vertical index which was stored using
|
|
|
+ * #setPreviousVerticalIndex() or 0 if no previous index
|
|
|
+ * exists.
|
|
|
+ *
|
|
|
+ * @param {HTMLElement} stack The vertical stack element
|
|
|
+ */
|
|
|
+ function getPreviousVerticalIndex( stack ) {
|
|
|
+
|
|
|
+ if( typeof stack === 'object' && typeof stack.setAttribute === 'function' && stack.classList.contains( 'stack' ) ) {
|
|
|
+ // Prefer manually defined start-indexv
|
|
|
+ const attributeName = stack.hasAttribute( 'data-start-indexv' ) ? 'data-start-indexv' : 'data-previous-indexv';
|
|
|
+
|
|
|
+ return parseInt( stack.getAttribute( attributeName ) || 0, 10 );
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Checks if the current or specified slide is vertical
|
|
|
+ * (nested within another slide).
|
|
|
+ *
|
|
|
+ * @param {HTMLElement} [slide=currentSlide] The slide to check
|
|
|
+ * orientation of
|
|
|
+ * @return {Boolean}
|
|
|
+ */
|
|
|
+ function isVerticalSlide( slide = currentSlide ) {
|
|
|
+
|
|
|
+ return slide && slide.parentNode && !!slide.parentNode.nodeName.match( /section/i );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Returns true if we're on the last slide in the current
|
|
|
+ * vertical stack.
|
|
|
+ */
|
|
|
+ function isLastVerticalSlide() {
|
|
|
+
|
|
|
+ if( currentSlide && isVerticalSlide( currentSlide ) ) {
|
|
|
+ // Does this slide have a next sibling?
|
|
|
+ if( currentSlide.nextElementSibling ) return false;
|
|
|
+
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+
|
|
|
+ return false;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Returns true if we're currently on the first slide in
|
|
|
+ * the presentation.
|
|
|
+ */
|
|
|
+ function isFirstSlide() {
|
|
|
+
|
|
|
+ return indexh === 0 && indexv === 0;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Returns true if we're currently on the last slide in
|
|
|
+ * the presenation. If the last slide is a stack, we only
|
|
|
+ * consider this the last slide if it's at the end of the
|
|
|
+ * stack.
|
|
|
+ */
|
|
|
+ function isLastSlide() {
|
|
|
+
|
|
|
+ if( currentSlide ) {
|
|
|
+ // Does this slide have a next sibling?
|
|
|
+ if( currentSlide.nextElementSibling ) return false;
|
|
|
+
|
|
|
+ // If it's vertical, does its parent have a next sibling?
|
|
|
+ if( isVerticalSlide( currentSlide ) && currentSlide.parentNode.nextElementSibling ) return false;
|
|
|
+
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+
|
|
|
+ return false;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Enters the paused mode which fades everything on screen to
|
|
|
+ * black.
|
|
|
+ */
|
|
|
+ function pause() {
|
|
|
+
|
|
|
+ if( config.pause ) {
|
|
|
+ const wasPaused = dom.wrapper.classList.contains( 'paused' );
|
|
|
+
|
|
|
+ cancelAutoSlide();
|
|
|
+ dom.wrapper.classList.add( 'paused' );
|
|
|
+
|
|
|
+ if( wasPaused === false ) {
|
|
|
+ dispatchEvent({ type: 'paused' });
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Exits from the paused mode.
|
|
|
+ */
|
|
|
+ function resume() {
|
|
|
+
|
|
|
+ const wasPaused = dom.wrapper.classList.contains( 'paused' );
|
|
|
+ dom.wrapper.classList.remove( 'paused' );
|
|
|
+
|
|
|
+ cueAutoSlide();
|
|
|
+
|
|
|
+ if( wasPaused ) {
|
|
|
+ dispatchEvent({ type: 'resumed' });
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Toggles the paused mode on and off.
|
|
|
+ */
|
|
|
+ function togglePause( override ) {
|
|
|
+
|
|
|
+ if( typeof override === 'boolean' ) {
|
|
|
+ override ? pause() : resume();
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ isPaused() ? resume() : pause();
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Checks if we are currently in the paused mode.
|
|
|
+ *
|
|
|
+ * @return {Boolean}
|
|
|
+ */
|
|
|
+ function isPaused() {
|
|
|
+
|
|
|
+ return dom.wrapper.classList.contains( 'paused' );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Toggles the auto slide mode on and off.
|
|
|
+ *
|
|
|
+ * @param {Boolean} [override] Flag which sets the desired state.
|
|
|
+ * True means autoplay starts, false means it stops.
|
|
|
+ */
|
|
|
+
|
|
|
+ function toggleAutoSlide( override ) {
|
|
|
+
|
|
|
+ if( typeof override === 'boolean' ) {
|
|
|
+ override ? resumeAutoSlide() : pauseAutoSlide();
|
|
|
+ }
|
|
|
+
|
|
|
+ else {
|
|
|
+ autoSlidePaused ? resumeAutoSlide() : pauseAutoSlide();
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Checks if the auto slide mode is currently on.
|
|
|
+ *
|
|
|
+ * @return {Boolean}
|
|
|
+ */
|
|
|
+ function isAutoSliding() {
|
|
|
+
|
|
|
+ return !!( autoSlide && !autoSlidePaused );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Steps from the current point in the presentation to the
|
|
|
+ * slide which matches the specified horizontal and vertical
|
|
|
+ * indices.
|
|
|
+ *
|
|
|
+ * @param {number} [h=indexh] Horizontal index of the target slide
|
|
|
+ * @param {number} [v=indexv] Vertical index of the target slide
|
|
|
+ * @param {number} [f] Index of a fragment within the
|
|
|
+ * target slide to activate
|
|
|
+ * @param {number} [o] Origin for use in multimaster environments
|
|
|
+ */
|
|
|
+ function slide( h, v, f, o ) {
|
|
|
+
|
|
|
+ // Remember where we were at before
|
|
|
+ previousSlide = currentSlide;
|
|
|
+
|
|
|
+ // Query all horizontal slides in the deck
|
|
|
+ const horizontalSlides = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR );
|
|
|
+
|
|
|
+ // Abort if there are no slides
|
|
|
+ if( horizontalSlides.length === 0 ) return;
|
|
|
+
|
|
|
+ // If no vertical index is specified and the upcoming slide is a
|
|
|
+ // stack, resume at its previous vertical index
|
|
|
+ if( v === undefined && !overview.isActive() ) {
|
|
|
+ v = getPreviousVerticalIndex( horizontalSlides[ h ] );
|
|
|
+ }
|
|
|
+
|
|
|
+ // If we were on a vertical stack, remember what vertical index
|
|
|
+ // it was on so we can resume at the same position when returning
|
|
|
+ if( previousSlide && previousSlide.parentNode && previousSlide.parentNode.classList.contains( 'stack' ) ) {
|
|
|
+ setPreviousVerticalIndex( previousSlide.parentNode, indexv );
|
|
|
+ }
|
|
|
+
|
|
|
+ // Remember the state before this slide
|
|
|
+ const stateBefore = state.concat();
|
|
|
+
|
|
|
+ // Reset the state array
|
|
|
+ state.length = 0;
|
|
|
+
|
|
|
+ let indexhBefore = indexh || 0,
|
|
|
+ indexvBefore = indexv || 0;
|
|
|
+
|
|
|
+ // Activate and transition to the new slide
|
|
|
+ indexh = updateSlides( HORIZONTAL_SLIDES_SELECTOR, h === undefined ? indexh : h );
|
|
|
+ indexv = updateSlides( VERTICAL_SLIDES_SELECTOR, v === undefined ? indexv : v );
|
|
|
+
|
|
|
+ // Dispatch an event if the slide changed
|
|
|
+ let slideChanged = ( indexh !== indexhBefore || indexv !== indexvBefore );
|
|
|
+
|
|
|
+ // Ensure that the previous slide is never the same as the current
|
|
|
+ if( !slideChanged ) previousSlide = null;
|
|
|
+
|
|
|
+ // Find the current horizontal slide and any possible vertical slides
|
|
|
+ // within it
|
|
|
+ let currentHorizontalSlide = horizontalSlides[ indexh ],
|
|
|
+ currentVerticalSlides = currentHorizontalSlide.querySelectorAll( 'section' );
|
|
|
+
|
|
|
+ // Store references to the previous and current slides
|
|
|
+ currentSlide = currentVerticalSlides[ indexv ] || currentHorizontalSlide;
|
|
|
+
|
|
|
+ let autoAnimateTransition = false;
|
|
|
+
|
|
|
+ // Detect if we're moving between two auto-animated slides
|
|
|
+ if( slideChanged && previousSlide && currentSlide && !overview.isActive() ) {
|
|
|
+
|
|
|
+ // If this is an auto-animated transition, we disable the
|
|
|
+ // regular slide transition
|
|
|
+ //
|
|
|
+ // Note 20-03-2020:
|
|
|
+ // This needs to happen before we update slide visibility,
|
|
|
+ // otherwise transitions will still run in Safari.
|
|
|
+ if( previousSlide.hasAttribute( 'data-auto-animate' ) && currentSlide.hasAttribute( 'data-auto-animate' ) ) {
|
|
|
+ autoAnimateTransition = true;
|
|
|
+ dom.slides.classList.add( 'disable-slide-transitions' );
|
|
|
+ }
|
|
|
+
|
|
|
+ transition = 'running';
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ // Update the visibility of slides now that the indices have changed
|
|
|
+ updateSlidesVisibility();
|
|
|
+
|
|
|
+ layout();
|
|
|
+
|
|
|
+ // Update the overview if it's currently active
|
|
|
+ if( overview.isActive() ) {
|
|
|
+ overview.update();
|
|
|
+ }
|
|
|
+
|
|
|
+ // Show fragment, if specified
|
|
|
+ if( typeof f !== 'undefined' ) {
|
|
|
+ fragments.goto( f );
|
|
|
+ }
|
|
|
+
|
|
|
+ // Solves an edge case where the previous slide maintains the
|
|
|
+ // 'present' class when navigating between adjacent vertical
|
|
|
+ // stacks
|
|
|
+ if( previousSlide && previousSlide !== currentSlide ) {
|
|
|
+ previousSlide.classList.remove( 'present' );
|
|
|
+ previousSlide.setAttribute( 'aria-hidden', 'true' );
|
|
|
+
|
|
|
+ // Reset all slides upon navigate to home
|
|
|
+ if( isFirstSlide() ) {
|
|
|
+ // Launch async task
|
|
|
+ setTimeout( () => {
|
|
|
+ getVerticalStacks().forEach( slide => {
|
|
|
+ setPreviousVerticalIndex( slide, 0 );
|
|
|
+ } );
|
|
|
+ }, 0 );
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ // Apply the new state
|
|
|
+ stateLoop: for( let i = 0, len = state.length; i < len; i++ ) {
|
|
|
+ // Check if this state existed on the previous slide. If it
|
|
|
+ // did, we will avoid adding it repeatedly
|
|
|
+ for( let j = 0; j < stateBefore.length; j++ ) {
|
|
|
+ if( stateBefore[j] === state[i] ) {
|
|
|
+ stateBefore.splice( j, 1 );
|
|
|
+ continue stateLoop;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ dom.viewport.classList.add( state[i] );
|
|
|
+
|
|
|
+ // Dispatch custom event matching the state's name
|
|
|
+ dispatchEvent({ type: state[i] });
|
|
|
+ }
|
|
|
+
|
|
|
+ // Clean up the remains of the previous state
|
|
|
+ while( stateBefore.length ) {
|
|
|
+ dom.viewport.classList.remove( stateBefore.pop() );
|
|
|
+ }
|
|
|
+
|
|
|
+ if( slideChanged ) {
|
|
|
+ dispatchEvent({
|
|
|
+ type: 'slidechanged',
|
|
|
+ data: {
|
|
|
+ indexh,
|
|
|
+ indexv,
|
|
|
+ previousSlide,
|
|
|
+ currentSlide,
|
|
|
+ origin: o
|
|
|
+ }
|
|
|
+ });
|
|
|
+ }
|
|
|
+
|
|
|
+ // Handle embedded content
|
|
|
+ if( slideChanged || !previousSlide ) {
|
|
|
+ slideContent.stopEmbeddedContent( previousSlide );
|
|
|
+ slideContent.startEmbeddedContent( currentSlide );
|
|
|
+ }
|
|
|
+
|
|
|
+ // Announce the current slide contents to screen readers
|
|
|
+ announceStatus( getStatusText( currentSlide ) );
|
|
|
+
|
|
|
+ progress.update();
|
|
|
+ controls.update();
|
|
|
+ notes.update();
|
|
|
+ backgrounds.update();
|
|
|
+ backgrounds.updateParallax();
|
|
|
+ slideNumber.update();
|
|
|
+ fragments.update();
|
|
|
+
|
|
|
+ // Update the URL hash
|
|
|
+ location.writeURL();
|
|
|
+
|
|
|
+ cueAutoSlide();
|
|
|
+
|
|
|
+ // Auto-animation
|
|
|
+ if( autoAnimateTransition ) {
|
|
|
+
|
|
|
+ setTimeout( () => {
|
|
|
+ dom.slides.classList.remove( 'disable-slide-transitions' );
|
|
|
+ }, 0 );
|
|
|
+
|
|
|
+ if( config.autoAnimate ) {
|
|
|
+ // Run the auto-animation between our slides
|
|
|
+ autoAnimate.run( previousSlide, currentSlide );
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Syncs the presentation with the current DOM. Useful
|
|
|
+ * when new slides or control elements are added or when
|
|
|
+ * the configuration has changed.
|
|
|
+ */
|
|
|
+ function sync() {
|
|
|
+
|
|
|
+ // Subscribe to input
|
|
|
+ removeEventListeners();
|
|
|
+ addEventListeners();
|
|
|
+
|
|
|
+ // Force a layout to make sure the current config is accounted for
|
|
|
+ layout();
|
|
|
+
|
|
|
+ // Reflect the current autoSlide value
|
|
|
+ autoSlide = config.autoSlide;
|
|
|
+
|
|
|
+ // Start auto-sliding if it's enabled
|
|
|
+ cueAutoSlide();
|
|
|
+
|
|
|
+ // Re-create all slide backgrounds
|
|
|
+ backgrounds.create();
|
|
|
+
|
|
|
+ // Write the current hash to the URL
|
|
|
+ location.writeURL();
|
|
|
+
|
|
|
+ fragments.sortAll();
|
|
|
+
|
|
|
+ controls.update();
|
|
|
+ progress.update();
|
|
|
+
|
|
|
+ updateSlidesVisibility();
|
|
|
+
|
|
|
+ notes.update();
|
|
|
+ notes.updateVisibility();
|
|
|
+ backgrounds.update( true );
|
|
|
+ slideNumber.update();
|
|
|
+ slideContent.formatEmbeddedContent();
|
|
|
+
|
|
|
+ // Start or stop embedded content depending on global config
|
|
|
+ if( config.autoPlayMedia === false ) {
|
|
|
+ slideContent.stopEmbeddedContent( currentSlide, { unloadIframes: false } );
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ slideContent.startEmbeddedContent( currentSlide );
|
|
|
+ }
|
|
|
+
|
|
|
+ if( overview.isActive() ) {
|
|
|
+ overview.layout();
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Updates reveal.js to keep in sync with new slide attributes. For
|
|
|
+ * example, if you add a new `data-background-image` you can call
|
|
|
+ * this to have reveal.js render the new background image.
|
|
|
+ *
|
|
|
+ * Similar to #sync() but more efficient when you only need to
|
|
|
+ * refresh a specific slide.
|
|
|
+ *
|
|
|
+ * @param {HTMLElement} slide
|
|
|
+ */
|
|
|
+ function syncSlide( slide = currentSlide ) {
|
|
|
+
|
|
|
+ backgrounds.sync( slide );
|
|
|
+ fragments.sync( slide );
|
|
|
+
|
|
|
+ slideContent.load( slide );
|
|
|
+
|
|
|
+ backgrounds.update();
|
|
|
+ notes.update();
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Resets all vertical slides so that only the first
|
|
|
+ * is visible.
|
|
|
+ */
|
|
|
+ function resetVerticalSlides() {
|
|
|
+
|
|
|
+ getHorizontalSlides().forEach( horizontalSlide => {
|
|
|
+
|
|
|
+ Util.queryAll( horizontalSlide, 'section' ).forEach( ( verticalSlide, y ) => {
|
|
|
+
|
|
|
+ if( y > 0 ) {
|
|
|
+ verticalSlide.classList.remove( 'present' );
|
|
|
+ verticalSlide.classList.remove( 'past' );
|
|
|
+ verticalSlide.classList.add( 'future' );
|
|
|
+ verticalSlide.setAttribute( 'aria-hidden', 'true' );
|
|
|
+ }
|
|
|
+
|
|
|
+ } );
|
|
|
+
|
|
|
+ } );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Randomly shuffles all slides in the deck.
|
|
|
+ */
|
|
|
+ function shuffle( slides = getHorizontalSlides() ) {
|
|
|
+
|
|
|
+ slides.forEach( ( slide, i ) => {
|
|
|
+
|
|
|
+ // Insert the slide next to a randomly picked sibling slide
|
|
|
+ // slide. This may cause the slide to insert before itself,
|
|
|
+ // but that's not an issue.
|
|
|
+ let beforeSlide = slides[ Math.floor( Math.random() * slides.length ) ];
|
|
|
+ if( beforeSlide.parentNode === slide.parentNode ) {
|
|
|
+ slide.parentNode.insertBefore( slide, beforeSlide );
|
|
|
+ }
|
|
|
+
|
|
|
+ // Randomize the order of vertical slides (if there are any)
|
|
|
+ let verticalSlides = slide.querySelectorAll( 'section' );
|
|
|
+ if( verticalSlides.length ) {
|
|
|
+ shuffle( verticalSlides );
|
|
|
+ }
|
|
|
+
|
|
|
+ } );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Updates one dimension of slides by showing the slide
|
|
|
+ * with the specified index.
|
|
|
+ *
|
|
|
+ * @param {string} selector A CSS selector that will fetch
|
|
|
+ * the group of slides we are working with
|
|
|
+ * @param {number} index The index of the slide that should be
|
|
|
+ * shown
|
|
|
+ *
|
|
|
+ * @return {number} The index of the slide that is now shown,
|
|
|
+ * might differ from the passed in index if it was out of
|
|
|
+ * bounds.
|
|
|
+ */
|
|
|
+ function updateSlides( selector, index ) {
|
|
|
+
|
|
|
+ // Select all slides and convert the NodeList result to
|
|
|
+ // an array
|
|
|
+ let slides = Util.queryAll( dom.wrapper, selector ),
|
|
|
+ slidesLength = slides.length;
|
|
|
+
|
|
|
+ let printMode = print.isPrintingPDF();
|
|
|
+
|
|
|
+ if( slidesLength ) {
|
|
|
+
|
|
|
+ // Should the index loop?
|
|
|
+ if( config.loop ) {
|
|
|
+ index %= slidesLength;
|
|
|
+
|
|
|
+ if( index < 0 ) {
|
|
|
+ index = slidesLength + index;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ // Enforce max and minimum index bounds
|
|
|
+ index = Math.max( Math.min( index, slidesLength - 1 ), 0 );
|
|
|
+
|
|
|
+ for( let i = 0; i < slidesLength; i++ ) {
|
|
|
+ let element = slides[i];
|
|
|
+
|
|
|
+ let reverse = config.rtl && !isVerticalSlide( element );
|
|
|
+
|
|
|
+ // Avoid .remove() with multiple args for IE11 support
|
|
|
+ element.classList.remove( 'past' );
|
|
|
+ element.classList.remove( 'present' );
|
|
|
+ element.classList.remove( 'future' );
|
|
|
+
|
|
|
+ // http://www.w3.org/html/wg/drafts/html/master/editing.html#the-hidden-attribute
|
|
|
+ element.setAttribute( 'hidden', '' );
|
|
|
+ element.setAttribute( 'aria-hidden', 'true' );
|
|
|
+
|
|
|
+ // If this element contains vertical slides
|
|
|
+ if( element.querySelector( 'section' ) ) {
|
|
|
+ element.classList.add( 'stack' );
|
|
|
+ }
|
|
|
+
|
|
|
+ // If we're printing static slides, all slides are "present"
|
|
|
+ if( printMode ) {
|
|
|
+ element.classList.add( 'present' );
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+ if( i < index ) {
|
|
|
+ // Any element previous to index is given the 'past' class
|
|
|
+ element.classList.add( reverse ? 'future' : 'past' );
|
|
|
+
|
|
|
+ if( config.fragments ) {
|
|
|
+ // Show all fragments in prior slides
|
|
|
+ Util.queryAll( element, '.fragment' ).forEach( fragment => {
|
|
|
+ fragment.classList.add( 'visible' );
|
|
|
+ fragment.classList.remove( 'current-fragment' );
|
|
|
+ } );
|
|
|
+ }
|
|
|
+ }
|
|
|
+ else if( i > index ) {
|
|
|
+ // Any element subsequent to index is given the 'future' class
|
|
|
+ element.classList.add( reverse ? 'past' : 'future' );
|
|
|
+
|
|
|
+ if( config.fragments ) {
|
|
|
+ // Hide all fragments in future slides
|
|
|
+ Util.queryAll( element, '.fragment.visible' ).forEach( fragment => {
|
|
|
+ fragment.classList.remove( 'visible', 'current-fragment' );
|
|
|
+ } );
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ let slide = slides[index];
|
|
|
+ let wasPresent = slide.classList.contains( 'present' );
|
|
|
+
|
|
|
+ // Mark the current slide as present
|
|
|
+ slide.classList.add( 'present' );
|
|
|
+ slide.removeAttribute( 'hidden' );
|
|
|
+ slide.removeAttribute( 'aria-hidden' );
|
|
|
+
|
|
|
+ if( !wasPresent ) {
|
|
|
+ // Dispatch an event indicating the slide is now visible
|
|
|
+ dispatchEvent({
|
|
|
+ target: slide,
|
|
|
+ type: 'visible',
|
|
|
+ bubbles: false
|
|
|
+ });
|
|
|
+ }
|
|
|
+
|
|
|
+ // If this slide has a state associated with it, add it
|
|
|
+ // onto the current state of the deck
|
|
|
+ let slideState = slide.getAttribute( 'data-state' );
|
|
|
+ if( slideState ) {
|
|
|
+ state = state.concat( slideState.split( ' ' ) );
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ // Since there are no slides we can't be anywhere beyond the
|
|
|
+ // zeroth index
|
|
|
+ index = 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ return index;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Optimization method; hide all slides that are far away
|
|
|
+ * from the present slide.
|
|
|
+ */
|
|
|
+ function updateSlidesVisibility() {
|
|
|
+
|
|
|
+ // Select all slides and convert the NodeList result to
|
|
|
+ // an array
|
|
|
+ let horizontalSlides = getHorizontalSlides(),
|
|
|
+ horizontalSlidesLength = horizontalSlides.length,
|
|
|
+ distanceX,
|
|
|
+ distanceY;
|
|
|
+
|
|
|
+ if( horizontalSlidesLength && typeof indexh !== 'undefined' ) {
|
|
|
+
|
|
|
+ // The number of steps away from the present slide that will
|
|
|
+ // be visible
|
|
|
+ let viewDistance = overview.isActive() ? 10 : config.viewDistance;
|
|
|
+
|
|
|
+ // Shorten the view distance on devices that typically have
|
|
|
+ // less resources
|
|
|
+ if( Device.isMobile ) {
|
|
|
+ viewDistance = overview.isActive() ? 6 : config.mobileViewDistance;
|
|
|
+ }
|
|
|
+
|
|
|
+ // All slides need to be visible when exporting to PDF
|
|
|
+ if( print.isPrintingPDF() ) {
|
|
|
+ viewDistance = Number.MAX_VALUE;
|
|
|
+ }
|
|
|
+
|
|
|
+ for( let x = 0; x < horizontalSlidesLength; x++ ) {
|
|
|
+ let horizontalSlide = horizontalSlides[x];
|
|
|
+
|
|
|
+ let verticalSlides = Util.queryAll( horizontalSlide, 'section' ),
|
|
|
+ verticalSlidesLength = verticalSlides.length;
|
|
|
+
|
|
|
+ // Determine how far away this slide is from the present
|
|
|
+ distanceX = Math.abs( ( indexh || 0 ) - x ) || 0;
|
|
|
+
|
|
|
+ // If the presentation is looped, distance should measure
|
|
|
+ // 1 between the first and last slides
|
|
|
+ if( config.loop ) {
|
|
|
+ distanceX = Math.abs( ( ( indexh || 0 ) - x ) % ( horizontalSlidesLength - viewDistance ) ) || 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Show the horizontal slide if it's within the view distance
|
|
|
+ if( distanceX < viewDistance ) {
|
|
|
+ slideContent.load( horizontalSlide );
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ slideContent.unload( horizontalSlide );
|
|
|
+ }
|
|
|
+
|
|
|
+ if( verticalSlidesLength ) {
|
|
|
+
|
|
|
+ let oy = getPreviousVerticalIndex( horizontalSlide );
|
|
|
+
|
|
|
+ for( let y = 0; y < verticalSlidesLength; y++ ) {
|
|
|
+ let verticalSlide = verticalSlides[y];
|
|
|
+
|
|
|
+ distanceY = x === ( indexh || 0 ) ? Math.abs( ( indexv || 0 ) - y ) : Math.abs( y - oy );
|
|
|
+
|
|
|
+ if( distanceX + distanceY < viewDistance ) {
|
|
|
+ slideContent.load( verticalSlide );
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ slideContent.unload( verticalSlide );
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ // Flag if there are ANY vertical slides, anywhere in the deck
|
|
|
+ if( hasVerticalSlides() ) {
|
|
|
+ dom.wrapper.classList.add( 'has-vertical-slides' );
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ dom.wrapper.classList.remove( 'has-vertical-slides' );
|
|
|
+ }
|
|
|
+
|
|
|
+ // Flag if there are ANY horizontal slides, anywhere in the deck
|
|
|
+ if( hasHorizontalSlides() ) {
|
|
|
+ dom.wrapper.classList.add( 'has-horizontal-slides' );
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ dom.wrapper.classList.remove( 'has-horizontal-slides' );
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Determine what available routes there are for navigation.
|
|
|
+ *
|
|
|
+ * @return {{left: boolean, right: boolean, up: boolean, down: boolean}}
|
|
|
+ */
|
|
|
+ function availableRoutes({ includeFragments = false } = {}) {
|
|
|
+
|
|
|
+ let horizontalSlides = dom.wrapper.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ),
|
|
|
+ verticalSlides = dom.wrapper.querySelectorAll( VERTICAL_SLIDES_SELECTOR );
|
|
|
+
|
|
|
+ let routes = {
|
|
|
+ left: indexh > 0,
|
|
|
+ right: indexh < horizontalSlides.length - 1,
|
|
|
+ up: indexv > 0,
|
|
|
+ down: indexv < verticalSlides.length - 1
|
|
|
+ };
|
|
|
+
|
|
|
+ // Looped presentations can always be navigated as long as
|
|
|
+ // there are slides available
|
|
|
+ if( config.loop ) {
|
|
|
+ if( horizontalSlides.length > 1 ) {
|
|
|
+ routes.left = true;
|
|
|
+ routes.right = true;
|
|
|
+ }
|
|
|
+
|
|
|
+ if( verticalSlides.length > 1 ) {
|
|
|
+ routes.up = true;
|
|
|
+ routes.down = true;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if ( horizontalSlides.length > 1 && config.navigationMode === 'linear' ) {
|
|
|
+ routes.right = routes.right || routes.down;
|
|
|
+ routes.left = routes.left || routes.up;
|
|
|
+ }
|
|
|
+
|
|
|
+ // If includeFragments is set, a route will be considered
|
|
|
+ // availalbe if either a slid OR fragment is available in
|
|
|
+ // the given direction
|
|
|
+ if( includeFragments === true ) {
|
|
|
+ let fragmentRoutes = fragments.availableRoutes();
|
|
|
+ routes.left = routes.left || fragmentRoutes.prev;
|
|
|
+ routes.up = routes.up || fragmentRoutes.prev;
|
|
|
+ routes.down = routes.down || fragmentRoutes.next;
|
|
|
+ routes.right = routes.right || fragmentRoutes.next;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Reverse horizontal controls for rtl
|
|
|
+ if( config.rtl ) {
|
|
|
+ let left = routes.left;
|
|
|
+ routes.left = routes.right;
|
|
|
+ routes.right = left;
|
|
|
+ }
|
|
|
+
|
|
|
+ return routes;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Returns the number of past slides. This can be used as a global
|
|
|
+ * flattened index for slides.
|
|
|
+ *
|
|
|
+ * @param {HTMLElement} [slide=currentSlide] The slide we're counting before
|
|
|
+ *
|
|
|
+ * @return {number} Past slide count
|
|
|
+ */
|
|
|
+ function getSlidePastCount( slide = currentSlide ) {
|
|
|
+
|
|
|
+ let horizontalSlides = getHorizontalSlides();
|
|
|
+
|
|
|
+ // The number of past slides
|
|
|
+ let pastCount = 0;
|
|
|
+
|
|
|
+ // Step through all slides and count the past ones
|
|
|
+ mainLoop: for( let i = 0; i < horizontalSlides.length; i++ ) {
|
|
|
+
|
|
|
+ let horizontalSlide = horizontalSlides[i];
|
|
|
+ let verticalSlides = horizontalSlide.querySelectorAll( 'section' );
|
|
|
+
|
|
|
+ for( let j = 0; j < verticalSlides.length; j++ ) {
|
|
|
+
|
|
|
+ // Stop as soon as we arrive at the present
|
|
|
+ if( verticalSlides[j] === slide ) {
|
|
|
+ break mainLoop;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Don't count slides with the "uncounted" class
|
|
|
+ if( verticalSlides[j].dataset.visibility !== 'uncounted' ) {
|
|
|
+ pastCount++;
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ // Stop as soon as we arrive at the present
|
|
|
+ if( horizontalSlide === slide ) {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ // Don't count the wrapping section for vertical slides and
|
|
|
+ // slides marked as uncounted
|
|
|
+ if( horizontalSlide.classList.contains( 'stack' ) === false && horizontalSlide.dataset.visibility !== 'uncounted' ) {
|
|
|
+ pastCount++;
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ return pastCount;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Returns a value ranging from 0-1 that represents
|
|
|
+ * how far into the presentation we have navigated.
|
|
|
+ *
|
|
|
+ * @return {number}
|
|
|
+ */
|
|
|
+ function getProgress() {
|
|
|
+
|
|
|
+ // The number of past and total slides
|
|
|
+ let totalCount = getTotalSlides();
|
|
|
+ let pastCount = getSlidePastCount();
|
|
|
+
|
|
|
+ if( currentSlide ) {
|
|
|
+
|
|
|
+ let allFragments = currentSlide.querySelectorAll( '.fragment' );
|
|
|
+
|
|
|
+ // If there are fragments in the current slide those should be
|
|
|
+ // accounted for in the progress.
|
|
|
+ if( allFragments.length > 0 ) {
|
|
|
+ let visibleFragments = currentSlide.querySelectorAll( '.fragment.visible' );
|
|
|
+
|
|
|
+ // This value represents how big a portion of the slide progress
|
|
|
+ // that is made up by its fragments (0-1)
|
|
|
+ let fragmentWeight = 0.9;
|
|
|
+
|
|
|
+ // Add fragment progress to the past slide count
|
|
|
+ pastCount += ( visibleFragments.length / allFragments.length ) * fragmentWeight;
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ return Math.min( pastCount / ( totalCount - 1 ), 1 );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Retrieves the h/v location and fragment of the current,
|
|
|
+ * or specified, slide.
|
|
|
+ *
|
|
|
+ * @param {HTMLElement} [slide] If specified, the returned
|
|
|
+ * index will be for this slide rather than the currently
|
|
|
+ * active one
|
|
|
+ *
|
|
|
+ * @return {{h: number, v: number, f: number}}
|
|
|
+ */
|
|
|
+ function getIndices( slide ) {
|
|
|
+
|
|
|
+ // By default, return the current indices
|
|
|
+ let h = indexh,
|
|
|
+ v = indexv,
|
|
|
+ f;
|
|
|
+
|
|
|
+ // If a slide is specified, return the indices of that slide
|
|
|
+ if( slide ) {
|
|
|
+ let isVertical = isVerticalSlide( slide );
|
|
|
+ let slideh = isVertical ? slide.parentNode : slide;
|
|
|
+
|
|
|
+ // Select all horizontal slides
|
|
|
+ let horizontalSlides = getHorizontalSlides();
|
|
|
+
|
|
|
+ // Now that we know which the horizontal slide is, get its index
|
|
|
+ h = Math.max( horizontalSlides.indexOf( slideh ), 0 );
|
|
|
+
|
|
|
+ // Assume we're not vertical
|
|
|
+ v = undefined;
|
|
|
+
|
|
|
+ // If this is a vertical slide, grab the vertical index
|
|
|
+ if( isVertical ) {
|
|
|
+ v = Math.max( Util.queryAll( slide.parentNode, 'section' ).indexOf( slide ), 0 );
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if( !slide && currentSlide ) {
|
|
|
+ let hasFragments = currentSlide.querySelectorAll( '.fragment' ).length > 0;
|
|
|
+ if( hasFragments ) {
|
|
|
+ let currentFragment = currentSlide.querySelector( '.current-fragment' );
|
|
|
+ if( currentFragment && currentFragment.hasAttribute( 'data-fragment-index' ) ) {
|
|
|
+ f = parseInt( currentFragment.getAttribute( 'data-fragment-index' ), 10 );
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ f = currentSlide.querySelectorAll( '.fragment.visible' ).length - 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return { h, v, f };
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Retrieves all slides in this presentation.
|
|
|
+ */
|
|
|
+ function getSlides() {
|
|
|
+
|
|
|
+ return Util.queryAll( dom.wrapper, SLIDES_SELECTOR + ':not(.stack):not([data-visibility="uncounted"])' );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Returns a list of all horizontal slides in the deck. Each
|
|
|
+ * vertical stack is included as one horizontal slide in the
|
|
|
+ * resulting array.
|
|
|
+ */
|
|
|
+ function getHorizontalSlides() {
|
|
|
+
|
|
|
+ return Util.queryAll( dom.wrapper, HORIZONTAL_SLIDES_SELECTOR );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Returns all vertical slides that exist within this deck.
|
|
|
+ */
|
|
|
+ function getVerticalSlides() {
|
|
|
+
|
|
|
+ return Util.queryAll( dom.wrapper, '.slides>section>section' );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Returns all vertical stacks (each stack can contain multiple slides).
|
|
|
+ */
|
|
|
+ function getVerticalStacks() {
|
|
|
+
|
|
|
+ return Util.queryAll( dom.wrapper, HORIZONTAL_SLIDES_SELECTOR + '.stack');
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Returns true if there are at least two horizontal slides.
|
|
|
+ */
|
|
|
+ function hasHorizontalSlides() {
|
|
|
+
|
|
|
+ return getHorizontalSlides().length > 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Returns true if there are at least two vertical slides.
|
|
|
+ */
|
|
|
+ function hasVerticalSlides() {
|
|
|
+
|
|
|
+ return getVerticalSlides().length > 1;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Returns an array of objects where each object represents the
|
|
|
+ * attributes on its respective slide.
|
|
|
+ */
|
|
|
+ function getSlidesAttributes() {
|
|
|
+
|
|
|
+ return getSlides().map( slide => {
|
|
|
+
|
|
|
+ let attributes = {};
|
|
|
+ for( let i = 0; i < slide.attributes.length; i++ ) {
|
|
|
+ let attribute = slide.attributes[ i ];
|
|
|
+ attributes[ attribute.name ] = attribute.value;
|
|
|
+ }
|
|
|
+ return attributes;
|
|
|
+
|
|
|
+ } );
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Retrieves the total number of slides in this presentation.
|
|
|
+ *
|
|
|
+ * @return {number}
|
|
|
+ */
|
|
|
+ function getTotalSlides() {
|
|
|
+
|
|
|
+ return getSlides().length;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Returns the slide element matching the specified index.
|
|
|
+ *
|
|
|
+ * @return {HTMLElement}
|
|
|
+ */
|
|
|
+ function getSlide( x, y ) {
|
|
|
+
|
|
|
+ let horizontalSlide = getHorizontalSlides()[ x ];
|
|
|
+ let verticalSlides = horizontalSlide && horizontalSlide.querySelectorAll( 'section' );
|
|
|
+
|
|
|
+ if( verticalSlides && verticalSlides.length && typeof y === 'number' ) {
|
|
|
+ return verticalSlides ? verticalSlides[ y ] : undefined;
|
|
|
+ }
|
|
|
+
|
|
|
+ return horizontalSlide;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Returns the background element for the given slide.
|
|
|
+ * All slides, even the ones with no background properties
|
|
|
+ * defined, have a background element so as long as the
|
|
|
+ * index is valid an element will be returned.
|
|
|
+ *
|
|
|
+ * @param {mixed} x Horizontal background index OR a slide
|
|
|
+ * HTML element
|
|
|
+ * @param {number} y Vertical background index
|
|
|
+ * @return {(HTMLElement[]|*)}
|
|
|
+ */
|
|
|
+ function getSlideBackground( x, y ) {
|
|
|
+
|
|
|
+ let slide = typeof x === 'number' ? getSlide( x, y ) : x;
|
|
|
+ if( slide ) {
|
|
|
+ return slide.slideBackgroundElement;
|
|
|
+ }
|
|
|
+
|
|
|
+ return undefined;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Retrieves the current state of the presentation as
|
|
|
+ * an object. This state can then be restored at any
|
|
|
+ * time.
|
|
|
+ *
|
|
|
+ * @return {{indexh: number, indexv: number, indexf: number, paused: boolean, overview: boolean}}
|
|
|
+ */
|
|
|
+ function getState() {
|
|
|
+
|
|
|
+ let indices = getIndices();
|
|
|
+
|
|
|
+ return {
|
|
|
+ indexh: indices.h,
|
|
|
+ indexv: indices.v,
|
|
|
+ indexf: indices.f,
|
|
|
+ paused: isPaused(),
|
|
|
+ overview: overview.isActive()
|
|
|
+ };
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Restores the presentation to the given state.
|
|
|
+ *
|
|
|
+ * @param {object} state As generated by getState()
|
|
|
+ * @see {@link getState} generates the parameter `state`
|
|
|
+ */
|
|
|
+ function setState( state ) {
|
|
|
+
|
|
|
+ if( typeof state === 'object' ) {
|
|
|
+ slide( Util.deserialize( state.indexh ), Util.deserialize( state.indexv ), Util.deserialize( state.indexf ) );
|
|
|
+
|
|
|
+ let pausedFlag = Util.deserialize( state.paused ),
|
|
|
+ overviewFlag = Util.deserialize( state.overview );
|
|
|
+
|
|
|
+ if( typeof pausedFlag === 'boolean' && pausedFlag !== isPaused() ) {
|
|
|
+ togglePause( pausedFlag );
|
|
|
+ }
|
|
|
+
|
|
|
+ if( typeof overviewFlag === 'boolean' && overviewFlag !== overview.isActive() ) {
|
|
|
+ overview.toggle( overviewFlag );
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Cues a new automated slide if enabled in the config.
|
|
|
+ */
|
|
|
+ function cueAutoSlide() {
|
|
|
+
|
|
|
+ cancelAutoSlide();
|
|
|
+
|
|
|
+ if( currentSlide && config.autoSlide !== false ) {
|
|
|
+
|
|
|
+ let fragment = currentSlide.querySelector( '.current-fragment' );
|
|
|
+
|
|
|
+ // When the slide first appears there is no "current" fragment so
|
|
|
+ // we look for a data-autoslide timing on the first fragment
|
|
|
+ if( !fragment ) fragment = currentSlide.querySelector( '.fragment' );
|
|
|
+
|
|
|
+ let fragmentAutoSlide = fragment ? fragment.getAttribute( 'data-autoslide' ) : null;
|
|
|
+ let parentAutoSlide = currentSlide.parentNode ? currentSlide.parentNode.getAttribute( 'data-autoslide' ) : null;
|
|
|
+ let slideAutoSlide = currentSlide.getAttribute( 'data-autoslide' );
|
|
|
+
|
|
|
+ // Pick value in the following priority order:
|
|
|
+ // 1. Current fragment's data-autoslide
|
|
|
+ // 2. Current slide's data-autoslide
|
|
|
+ // 3. Parent slide's data-autoslide
|
|
|
+ // 4. Global autoSlide setting
|
|
|
+ if( fragmentAutoSlide ) {
|
|
|
+ autoSlide = parseInt( fragmentAutoSlide, 10 );
|
|
|
+ }
|
|
|
+ else if( slideAutoSlide ) {
|
|
|
+ autoSlide = parseInt( slideAutoSlide, 10 );
|
|
|
+ }
|
|
|
+ else if( parentAutoSlide ) {
|
|
|
+ autoSlide = parseInt( parentAutoSlide, 10 );
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ autoSlide = config.autoSlide;
|
|
|
+
|
|
|
+ // If there are media elements with data-autoplay,
|
|
|
+ // automatically set the autoSlide duration to the
|
|
|
+ // length of that media. Not applicable if the slide
|
|
|
+ // is divided up into fragments.
|
|
|
+ // playbackRate is accounted for in the duration.
|
|
|
+ if( currentSlide.querySelectorAll( '.fragment' ).length === 0 ) {
|
|
|
+ Util.queryAll( currentSlide, 'video, audio' ).forEach( el => {
|
|
|
+ if( el.hasAttribute( 'data-autoplay' ) ) {
|
|
|
+ if( autoSlide && (el.duration * 1000 / el.playbackRate ) > autoSlide ) {
|
|
|
+ autoSlide = ( el.duration * 1000 / el.playbackRate ) + 1000;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } );
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ // Cue the next auto-slide if:
|
|
|
+ // - There is an autoSlide value
|
|
|
+ // - Auto-sliding isn't paused by the user
|
|
|
+ // - The presentation isn't paused
|
|
|
+ // - The overview isn't active
|
|
|
+ // - The presentation isn't over
|
|
|
+ if( autoSlide && !autoSlidePaused && !isPaused() && !overview.isActive() && ( !isLastSlide() || fragments.availableRoutes().next || config.loop === true ) ) {
|
|
|
+ autoSlideTimeout = setTimeout( () => {
|
|
|
+ if( typeof config.autoSlideMethod === 'function' ) {
|
|
|
+ config.autoSlideMethod()
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ navigateNext();
|
|
|
+ }
|
|
|
+ cueAutoSlide();
|
|
|
+ }, autoSlide );
|
|
|
+ autoSlideStartTime = Date.now();
|
|
|
+ }
|
|
|
+
|
|
|
+ if( autoSlidePlayer ) {
|
|
|
+ autoSlidePlayer.setPlaying( autoSlideTimeout !== -1 );
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Cancels any ongoing request to auto-slide.
|
|
|
+ */
|
|
|
+ function cancelAutoSlide() {
|
|
|
+
|
|
|
+ clearTimeout( autoSlideTimeout );
|
|
|
+ autoSlideTimeout = -1;
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ function pauseAutoSlide() {
|
|
|
+
|
|
|
+ if( autoSlide && !autoSlidePaused ) {
|
|
|
+ autoSlidePaused = true;
|
|
|
+ dispatchEvent({ type: 'autoslidepaused' });
|
|
|
+ clearTimeout( autoSlideTimeout );
|
|
|
+
|
|
|
+ if( autoSlidePlayer ) {
|
|
|
+ autoSlidePlayer.setPlaying( false );
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ function resumeAutoSlide() {
|
|
|
+
|
|
|
+ if( autoSlide && autoSlidePaused ) {
|
|
|
+ autoSlidePaused = false;
|
|
|
+ dispatchEvent({ type: 'autoslideresumed' });
|
|
|
+ cueAutoSlide();
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ function navigateLeft() {
|
|
|
+
|
|
|
+ navigationHistory.hasNavigatedHorizontally = true;
|
|
|
+
|
|
|
+ // Reverse for RTL
|
|
|
+ if( config.rtl ) {
|
|
|
+ if( ( overview.isActive() || fragments.next() === false ) && availableRoutes().left ) {
|
|
|
+ slide( indexh + 1, config.navigationMode === 'grid' ? indexv : undefined );
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // Normal navigation
|
|
|
+ else if( ( overview.isActive() || fragments.prev() === false ) && availableRoutes().left ) {
|
|
|
+ slide( indexh - 1, config.navigationMode === 'grid' ? indexv : undefined );
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ function navigateRight() {
|
|
|
+
|
|
|
+ navigationHistory.hasNavigatedHorizontally = true;
|
|
|
+
|
|
|
+ // Reverse for RTL
|
|
|
+ if( config.rtl ) {
|
|
|
+ if( ( overview.isActive() || fragments.prev() === false ) && availableRoutes().right ) {
|
|
|
+ slide( indexh - 1, config.navigationMode === 'grid' ? indexv : undefined );
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // Normal navigation
|
|
|
+ else if( ( overview.isActive() || fragments.next() === false ) && availableRoutes().right ) {
|
|
|
+ slide( indexh + 1, config.navigationMode === 'grid' ? indexv : undefined );
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ function navigateUp() {
|
|
|
+
|
|
|
+ // Prioritize hiding fragments
|
|
|
+ if( ( overview.isActive() || fragments.prev() === false ) && availableRoutes().up ) {
|
|
|
+ slide( indexh, indexv - 1 );
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ function navigateDown() {
|
|
|
+
|
|
|
+ navigationHistory.hasNavigatedVertically = true;
|
|
|
+
|
|
|
+ // Prioritize revealing fragments
|
|
|
+ if( ( overview.isActive() || fragments.next() === false ) && availableRoutes().down ) {
|
|
|
+ slide( indexh, indexv + 1 );
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Navigates backwards, prioritized in the following order:
|
|
|
+ * 1) Previous fragment
|
|
|
+ * 2) Previous vertical slide
|
|
|
+ * 3) Previous horizontal slide
|
|
|
+ */
|
|
|
+ function navigatePrev() {
|
|
|
+
|
|
|
+ // Prioritize revealing fragments
|
|
|
+ if( fragments.prev() === false ) {
|
|
|
+ if( availableRoutes().up ) {
|
|
|
+ navigateUp();
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ // Fetch the previous horizontal slide, if there is one
|
|
|
+ let previousSlide;
|
|
|
+
|
|
|
+ if( config.rtl ) {
|
|
|
+ previousSlide = Util.queryAll( dom.wrapper, HORIZONTAL_SLIDES_SELECTOR + '.future' ).pop();
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ previousSlide = Util.queryAll( dom.wrapper, HORIZONTAL_SLIDES_SELECTOR + '.past' ).pop();
|
|
|
+ }
|
|
|
+
|
|
|
+ if( previousSlide ) {
|
|
|
+ let v = ( previousSlide.querySelectorAll( 'section' ).length - 1 ) || undefined;
|
|
|
+ let h = indexh - 1;
|
|
|
+ slide( h, v );
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * The reverse of #navigatePrev().
|
|
|
+ */
|
|
|
+ function navigateNext() {
|
|
|
+
|
|
|
+ navigationHistory.hasNavigatedHorizontally = true;
|
|
|
+ navigationHistory.hasNavigatedVertically = true;
|
|
|
+
|
|
|
+ // Prioritize revealing fragments
|
|
|
+ if( fragments.next() === false ) {
|
|
|
+
|
|
|
+ let routes = availableRoutes();
|
|
|
+
|
|
|
+ // When looping is enabled `routes.down` is always available
|
|
|
+ // so we need a separate check for when we've reached the
|
|
|
+ // end of a stack and should move horizontally
|
|
|
+ if( routes.down && routes.right && config.loop && isLastVerticalSlide( currentSlide ) ) {
|
|
|
+ routes.down = false;
|
|
|
+ }
|
|
|
+
|
|
|
+ if( routes.down ) {
|
|
|
+ navigateDown();
|
|
|
+ }
|
|
|
+ else if( config.rtl ) {
|
|
|
+ navigateLeft();
|
|
|
+ }
|
|
|
+ else {
|
|
|
+ navigateRight();
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ // --------------------------------------------------------------------//
|
|
|
+ // ----------------------------- EVENTS -------------------------------//
|
|
|
+ // --------------------------------------------------------------------//
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Called by all event handlers that are based on user
|
|
|
+ * input.
|
|
|
+ *
|
|
|
+ * @param {object} [event]
|
|
|
+ */
|
|
|
+ function onUserInput( event ) {
|
|
|
+
|
|
|
+ if( config.autoSlideStoppable ) {
|
|
|
+ pauseAutoSlide();
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Event listener for transition end on the current slide.
|
|
|
+ *
|
|
|
+ * @param {object} [event]
|
|
|
+ */
|
|
|
+ function onTransitionEnd( event ) {
|
|
|
+
|
|
|
+ if( transition === 'running' && /section/gi.test( event.target.nodeName ) ) {
|
|
|
+ transition = 'idle';
|
|
|
+ dispatchEvent({
|
|
|
+ type: 'slidetransitionend',
|
|
|
+ data: { indexh, indexv, previousSlide, currentSlide }
|
|
|
+ });
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Handler for the window level 'resize' event.
|
|
|
+ *
|
|
|
+ * @param {object} [event]
|
|
|
+ */
|
|
|
+ function onWindowResize( event ) {
|
|
|
+
|
|
|
+ layout();
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Handle for the window level 'visibilitychange' event.
|
|
|
+ *
|
|
|
+ * @param {object} [event]
|
|
|
+ */
|
|
|
+ function onPageVisibilityChange( event ) {
|
|
|
+
|
|
|
+ // If, after clicking a link or similar and we're coming back,
|
|
|
+ // focus the document.body to ensure we can use keyboard shortcuts
|
|
|
+ if( document.hidden === false && document.activeElement !== document.body ) {
|
|
|
+ // Not all elements support .blur() - SVGs among them.
|
|
|
+ if( typeof document.activeElement.blur === 'function' ) {
|
|
|
+ document.activeElement.blur();
|
|
|
+ }
|
|
|
+ document.body.focus();
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Handles clicks on links that are set to preview in the
|
|
|
+ * iframe overlay.
|
|
|
+ *
|
|
|
+ * @param {object} event
|
|
|
+ */
|
|
|
+ function onPreviewLinkClicked( event ) {
|
|
|
+
|
|
|
+ if( event.currentTarget && event.currentTarget.hasAttribute( 'href' ) ) {
|
|
|
+ let url = event.currentTarget.getAttribute( 'href' );
|
|
|
+ if( url ) {
|
|
|
+ showPreview( url );
|
|
|
+ event.preventDefault();
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Handles click on the auto-sliding controls element.
|
|
|
+ *
|
|
|
+ * @param {object} [event]
|
|
|
+ */
|
|
|
+ function onAutoSlidePlayerClick( event ) {
|
|
|
+
|
|
|
+ // Replay
|
|
|
+ if( isLastSlide() && config.loop === false ) {
|
|
|
+ slide( 0, 0 );
|
|
|
+ resumeAutoSlide();
|
|
|
+ }
|
|
|
+ // Resume
|
|
|
+ else if( autoSlidePaused ) {
|
|
|
+ resumeAutoSlide();
|
|
|
+ }
|
|
|
+ // Pause
|
|
|
+ else {
|
|
|
+ pauseAutoSlide();
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ // --------------------------------------------------------------------//
|
|
|
+ // ------------------------------- API --------------------------------//
|
|
|
+ // --------------------------------------------------------------------//
|
|
|
+
|
|
|
+ // The public reveal.js API
|
|
|
+ const API = {
|
|
|
+ VERSION,
|
|
|
+
|
|
|
+ initialize,
|
|
|
+ configure,
|
|
|
+
|
|
|
+ sync,
|
|
|
+ syncSlide,
|
|
|
+ syncFragments: fragments.sync.bind( fragments ),
|
|
|
+
|
|
|
+ // Navigation methods
|
|
|
+ slide,
|
|
|
+ left: navigateLeft,
|
|
|
+ right: navigateRight,
|
|
|
+ up: navigateUp,
|
|
|
+ down: navigateDown,
|
|
|
+ prev: navigatePrev,
|
|
|
+ next: navigateNext,
|
|
|
+
|
|
|
+ // Navigation aliases
|
|
|
+ navigateLeft, navigateRight, navigateUp, navigateDown, navigatePrev, navigateNext,
|
|
|
+
|
|
|
+ // Fragment methods
|
|
|
+ navigateFragment: fragments.goto.bind( fragments ),
|
|
|
+ prevFragment: fragments.prev.bind( fragments ),
|
|
|
+ nextFragment: fragments.next.bind( fragments ),
|
|
|
+
|
|
|
+ // Event binding
|
|
|
+ on,
|
|
|
+ off,
|
|
|
+
|
|
|
+ // Legacy event binding methods left in for backwards compatibility
|
|
|
+ addEventListener: on,
|
|
|
+ removeEventListener: off,
|
|
|
+
|
|
|
+ // Forces an update in slide layout
|
|
|
+ layout,
|
|
|
+
|
|
|
+ // Randomizes the order of slides
|
|
|
+ shuffle,
|
|
|
+
|
|
|
+ // Returns an object with the available routes as booleans (left/right/top/bottom)
|
|
|
+ availableRoutes,
|
|
|
+
|
|
|
+ // Returns an object with the available fragments as booleans (prev/next)
|
|
|
+ availableFragments: fragments.availableRoutes.bind( fragments ),
|
|
|
+
|
|
|
+ // Toggles a help overlay with keyboard shortcuts
|
|
|
+ toggleHelp,
|
|
|
+
|
|
|
+ // Toggles the overview mode on/off
|
|
|
+ toggleOverview: overview.toggle.bind( overview ),
|
|
|
+
|
|
|
+ // Toggles the "black screen" mode on/off
|
|
|
+ togglePause,
|
|
|
+
|
|
|
+ // Toggles the auto slide mode on/off
|
|
|
+ toggleAutoSlide,
|
|
|
+
|
|
|
+ // Slide navigation checks
|
|
|
+ isFirstSlide,
|
|
|
+ isLastSlide,
|
|
|
+ isLastVerticalSlide,
|
|
|
+ isVerticalSlide,
|
|
|
+
|
|
|
+ // State checks
|
|
|
+ isPaused,
|
|
|
+ isAutoSliding,
|
|
|
+ isSpeakerNotes: notes.isSpeakerNotesWindow.bind( notes ),
|
|
|
+ isOverview: overview.isActive.bind( overview ),
|
|
|
+ isFocused: focus.isFocused.bind( focus ),
|
|
|
+ isPrintingPDF: print.isPrintingPDF.bind( print ),
|
|
|
+
|
|
|
+ // Checks if reveal.js has been loaded and is ready for use
|
|
|
+ isReady: () => ready,
|
|
|
+
|
|
|
+ // Slide preloading
|
|
|
+ loadSlide: slideContent.load.bind( slideContent ),
|
|
|
+ unloadSlide: slideContent.unload.bind( slideContent ),
|
|
|
+
|
|
|
+ // Adds or removes all internal event listeners
|
|
|
+ addEventListeners,
|
|
|
+ removeEventListeners,
|
|
|
+ dispatchEvent,
|
|
|
+
|
|
|
+ // Facility for persisting and restoring the presentation state
|
|
|
+ getState,
|
|
|
+ setState,
|
|
|
+
|
|
|
+ // Presentation progress on range of 0-1
|
|
|
+ getProgress,
|
|
|
+
|
|
|
+ // Returns the indices of the current, or specified, slide
|
|
|
+ getIndices,
|
|
|
+
|
|
|
+ // Returns an Array of key:value maps of the attributes of each
|
|
|
+ // slide in the deck
|
|
|
+ getSlidesAttributes,
|
|
|
+
|
|
|
+ // Returns the number of slides that we have passed
|
|
|
+ getSlidePastCount,
|
|
|
+
|
|
|
+ // Returns the total number of slides
|
|
|
+ getTotalSlides,
|
|
|
+
|
|
|
+ // Returns the slide element at the specified index
|
|
|
+ getSlide,
|
|
|
+
|
|
|
+ // Returns the previous slide element, may be null
|
|
|
+ getPreviousSlide: () => previousSlide,
|
|
|
+
|
|
|
+ // Returns the current slide element
|
|
|
+ getCurrentSlide: () => currentSlide,
|
|
|
+
|
|
|
+ // Returns the slide background element at the specified index
|
|
|
+ getSlideBackground,
|
|
|
+
|
|
|
+ // Returns the speaker notes string for a slide, or null
|
|
|
+ getSlideNotes: notes.getSlideNotes.bind( notes ),
|
|
|
+
|
|
|
+ // Returns an Array of all slides
|
|
|
+ getSlides,
|
|
|
+
|
|
|
+ // Returns an array with all horizontal/vertical slides in the deck
|
|
|
+ getHorizontalSlides,
|
|
|
+ getVerticalSlides,
|
|
|
+
|
|
|
+ // Checks if the presentation contains two or more horizontal
|
|
|
+ // and vertical slides
|
|
|
+ hasHorizontalSlides,
|
|
|
+ hasVerticalSlides,
|
|
|
+
|
|
|
+ // Checks if the deck has navigated on either axis at least once
|
|
|
+ hasNavigatedHorizontally: () => navigationHistory.hasNavigatedHorizontally,
|
|
|
+ hasNavigatedVertically: () => navigationHistory.hasNavigatedVertically,
|
|
|
+
|
|
|
+ // Adds/removes a custom key binding
|
|
|
+ addKeyBinding: keyboard.addKeyBinding.bind( keyboard ),
|
|
|
+ removeKeyBinding: keyboard.removeKeyBinding.bind( keyboard ),
|
|
|
+
|
|
|
+ // Programmatically triggers a keyboard event
|
|
|
+ triggerKey: keyboard.triggerKey.bind( keyboard ),
|
|
|
+
|
|
|
+ // Registers a new shortcut to include in the help overlay
|
|
|
+ registerKeyboardShortcut: keyboard.registerKeyboardShortcut.bind( keyboard ),
|
|
|
+
|
|
|
+ getComputedSlideSize,
|
|
|
+
|
|
|
+ // Returns the current scale of the presentation content
|
|
|
+ getScale: () => scale,
|
|
|
+
|
|
|
+ // Returns the current configuration object
|
|
|
+ getConfig: () => config,
|
|
|
+
|
|
|
+ // Helper method, retrieves query string as a key:value map
|
|
|
+ getQueryHash: Util.getQueryHash,
|
|
|
+
|
|
|
+ // Returns reveal.js DOM elements
|
|
|
+ getRevealElement: () => revealElement,
|
|
|
+ getSlidesElement: () => dom.slides,
|
|
|
+ getViewportElement: () => dom.viewport,
|
|
|
+ getBackgroundsElement: () => backgrounds.element,
|
|
|
+
|
|
|
+ // API for registering and retrieving plugins
|
|
|
+ registerPlugin: plugins.registerPlugin.bind( plugins ),
|
|
|
+ hasPlugin: plugins.hasPlugin.bind( plugins ),
|
|
|
+ getPlugin: plugins.getPlugin.bind( plugins ),
|
|
|
+ getPlugins: plugins.getRegisteredPlugins.bind( plugins )
|
|
|
+
|
|
|
+ };
|
|
|
+
|
|
|
+ // Our internal API which controllers have access to
|
|
|
+ Util.extend( Reveal, {
|
|
|
+ ...API,
|
|
|
+
|
|
|
+ // Methods for announcing content to screen readers
|
|
|
+ announceStatus,
|
|
|
+ getStatusText,
|
|
|
+
|
|
|
+ // Controllers
|
|
|
+ print,
|
|
|
+ focus,
|
|
|
+ progress,
|
|
|
+ controls,
|
|
|
+ location,
|
|
|
+ overview,
|
|
|
+ fragments,
|
|
|
+ slideContent,
|
|
|
+ slideNumber,
|
|
|
+
|
|
|
+ onUserInput,
|
|
|
+ closeOverlay,
|
|
|
+ updateSlidesVisibility,
|
|
|
+ layoutSlideContents,
|
|
|
+ transformSlides,
|
|
|
+ cueAutoSlide,
|
|
|
+ cancelAutoSlide
|
|
|
+ } );
|
|
|
+
|
|
|
+ return API;
|
|
|
+
|
|
|
+};
|