1253 lines
37 KiB
JavaScript
1253 lines
37 KiB
JavaScript
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/*
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* Reveal.js menu plugin
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* MIT licensed
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* (c) Greg Denehy 2020
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*/
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const Plugin = () => {
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const ieVersion = (function () {
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let browser = /(msie) ([\w.]+)/.exec(
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window.navigator.userAgent.toLowerCase()
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);
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if (browser && browser[1] === 'msie') {
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return parseFloat(browser[2]);
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}
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return null;
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})();
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var deck;
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var config;
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var options;
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var initialised = false;
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function scriptPath() {
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// obtain plugin path from the script element
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var path;
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const script = document.querySelector('script[src$="menu.js"]');
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if (script) {
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var sel = document.querySelector('script[src$="menu.js"]');
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if (sel) {
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path = sel.src.slice(0, -7);
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}
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} else {
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path = import.meta.url.slice(0, import.meta.url.lastIndexOf('/') + 1);
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}
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return path;
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}
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function initOptions(config) {
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options = config.menu || {};
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options.path = options.path || scriptPath() || 'plugin/menu/';
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if (!options.path.endsWith('/')) {
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options.path += '/';
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}
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// Set defaults
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if (options.side === undefined) options.side = 'left';
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if (options.numbers === undefined) options.numbers = false;
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if (typeof options.titleSelector !== 'string')
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options.titleSelector = 'h1, h2, h3, h4, h5';
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if (options.hideMissingTitles === undefined)
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options.hideMissingTitles = false;
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if (options.useTextContentForMissingTitles === undefined)
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options.useTextContentForMissingTitles = false;
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if (options.markers === undefined) options.markers = true;
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if (typeof options.themesPath !== 'string')
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options.themesPath = 'dist/theme/';
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if (!options.themesPath.endsWith('/')) options.themesPath += '/';
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if (!select('link#theme')) options.themes = false;
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if (options.themes === true) {
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options.themes = [
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{ name: 'Black', theme: options.themesPath + 'black.css' },
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{ name: 'White', theme: options.themesPath + 'white.css' },
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{ name: 'League', theme: options.themesPath + 'league.css' },
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{ name: 'Sky', theme: options.themesPath + 'sky.css' },
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{ name: 'Beige', theme: options.themesPath + 'beige.css' },
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{ name: 'Simple', theme: options.themesPath + 'simple.css' },
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{ name: 'Serif', theme: options.themesPath + 'serif.css' },
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{ name: 'Blood', theme: options.themesPath + 'blood.css' },
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{ name: 'Night', theme: options.themesPath + 'night.css' },
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{ name: 'Moon', theme: options.themesPath + 'moon.css' },
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{ name: 'Solarized', theme: options.themesPath + 'solarized.css' }
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];
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} else if (!Array.isArray(options.themes)) {
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options.themes = false;
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}
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if (options.transitions === undefined) options.transitions = false;
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if (options.transitions === true) {
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options.transitions = [
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'None',
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'Fade',
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'Slide',
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'Convex',
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'Concave',
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'Zoom'
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];
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} else if (
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options.transitions !== false &&
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(!Array.isArray(options.transitions) ||
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!options.transitions.every(function (e) {
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return typeof e === 'string';
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}))
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) {
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console.error(
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"reveal.js-menu error: transitions config value must be 'true' or an array of strings, eg ['None', 'Fade', 'Slide')"
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);
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options.transitions = false;
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}
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if (ieVersion && ieVersion <= 9) {
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// transitions aren't support in IE9 anyway, so no point in showing them
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options.transitions = false;
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}
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if (typeof options.openButton === 'undefined') options.openButton = true;
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if (typeof options.openSlideNumber === 'undefined')
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options.openSlideNumber = false;
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if (typeof options.keyboard === 'undefined') options.keyboard = true;
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if (typeof options.sticky === 'undefined') options.sticky = false;
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if (typeof options.autoOpen === 'undefined') options.autoOpen = true;
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if (typeof options.delayInit === 'undefined') options.delayInit = false;
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if (typeof options.openOnInit === 'undefined') options.openOnInit = false;
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}
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var mouseSelectionEnabled = true;
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function disableMouseSelection() {
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mouseSelectionEnabled = false;
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}
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function reenableMouseSelection() {
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// wait until the mouse has moved before re-enabling mouse selection
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// to avoid selections on scroll
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select('nav.slide-menu').addEventListener('mousemove', function fn(e) {
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select('nav.slide-menu').removeEventListener('mousemove', fn);
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//XXX this should select the item under the mouse
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mouseSelectionEnabled = true;
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});
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}
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//
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// Keyboard handling
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//
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function getOffset(el) {
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var _x = 0;
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var _y = 0;
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while (el && !isNaN(el.offsetLeft) && !isNaN(el.offsetTop)) {
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_x += el.offsetLeft - el.scrollLeft;
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_y += el.offsetTop - el.scrollTop;
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el = el.offsetParent;
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}
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return { top: _y, left: _x };
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}
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function visibleOffset(el) {
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var offsetFromTop = getOffset(el).top - el.offsetParent.offsetTop;
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if (offsetFromTop < 0) return -offsetFromTop;
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var offsetFromBottom =
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el.offsetParent.offsetHeight -
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(el.offsetTop - el.offsetParent.scrollTop + el.offsetHeight);
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if (offsetFromBottom < 0) return offsetFromBottom;
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return 0;
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}
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function keepVisible(el) {
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var offset = visibleOffset(el);
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if (offset) {
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disableMouseSelection();
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el.scrollIntoView(offset > 0);
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reenableMouseSelection();
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}
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}
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function scrollItemToTop(el) {
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disableMouseSelection();
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el.offsetParent.scrollTop = el.offsetTop;
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reenableMouseSelection();
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}
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function scrollItemToBottom(el) {
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disableMouseSelection();
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el.offsetParent.scrollTop =
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el.offsetTop - el.offsetParent.offsetHeight + el.offsetHeight;
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reenableMouseSelection();
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}
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function selectItem(el) {
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el.classList.add('selected');
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keepVisible(el);
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if (options.sticky && options.autoOpen) openItem(el);
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}
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function onDocumentKeyDown(event) {
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// opening menu is handled by registering key binding with Reveal below
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if (isOpen()) {
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event.stopImmediatePropagation();
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switch (event.keyCode) {
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// case 77:
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// closeMenu();
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// break;
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// h, left - change panel
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case 72:
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case 37:
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prevPanel();
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break;
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// l, right - change panel
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case 76:
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case 39:
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nextPanel();
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break;
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// k, up
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case 75:
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case 38:
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var currItem =
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select('.active-menu-panel .slide-menu-items li.selected') ||
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select('.active-menu-panel .slide-menu-items li.active');
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if (currItem) {
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selectAll('.active-menu-panel .slide-menu-items li').forEach(
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function (item) {
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item.classList.remove('selected');
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}
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);
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var nextItem =
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select(
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'.active-menu-panel .slide-menu-items li[data-item="' +
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(parseInt(currItem.getAttribute('data-item')) - 1) +
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'"]'
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) || currItem;
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selectItem(nextItem);
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} else {
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var item = select(
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'.active-menu-panel .slide-menu-items li.slide-menu-item'
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);
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if (item) selectItem(item);
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}
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break;
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// j, down
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case 74:
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case 40:
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var currItem =
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select('.active-menu-panel .slide-menu-items li.selected') ||
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select('.active-menu-panel .slide-menu-items li.active');
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if (currItem) {
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selectAll('.active-menu-panel .slide-menu-items li').forEach(
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function (item) {
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item.classList.remove('selected');
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}
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);
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var nextItem =
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select(
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'.active-menu-panel .slide-menu-items li[data-item="' +
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(parseInt(currItem.getAttribute('data-item')) + 1) +
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'"]'
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) || currItem;
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selectItem(nextItem);
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} else {
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var item = select(
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'.active-menu-panel .slide-menu-items li.slide-menu-item'
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);
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if (item) selectItem(item);
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}
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break;
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// pageup, u
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case 33:
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case 85:
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var itemsAbove = selectAll(
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'.active-menu-panel .slide-menu-items li'
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).filter(function (item) {
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return visibleOffset(item) > 0;
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});
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var visibleItems = selectAll(
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'.active-menu-panel .slide-menu-items li'
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).filter(function (item) {
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return visibleOffset(item) == 0;
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});
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var firstVisible =
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itemsAbove.length > 0 &&
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Math.abs(visibleOffset(itemsAbove[itemsAbove.length - 1])) <
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itemsAbove[itemsAbove.length - 1].clientHeight
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? itemsAbove[itemsAbove.length - 1]
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: visibleItems[0];
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if (firstVisible) {
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if (
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firstVisible.classList.contains('selected') &&
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itemsAbove.length > 0
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) {
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// at top of viewport already, page scroll (if not at start)
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// ...move selected item to bottom, and change selection to last fully visible item at top
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scrollItemToBottom(firstVisible);
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visibleItems = selectAll(
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'.active-menu-panel .slide-menu-items li'
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).filter(function (item) {
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return visibleOffset(item) == 0;
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});
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if (visibleItems[0] == firstVisible) {
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// prev item is still beyond the viewport (for custom panels)
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firstVisible = itemsAbove[itemsAbove.length - 1];
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} else {
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firstVisible = visibleItems[0];
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}
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}
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selectAll('.active-menu-panel .slide-menu-items li').forEach(
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function (item) {
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item.classList.remove('selected');
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}
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);
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selectItem(firstVisible);
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// ensure selected item is positioned at the top of the viewport
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scrollItemToTop(firstVisible);
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}
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break;
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// pagedown, d
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case 34:
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case 68:
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var visibleItems = selectAll(
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'.active-menu-panel .slide-menu-items li'
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).filter(function (item) {
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return visibleOffset(item) == 0;
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});
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var itemsBelow = selectAll(
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'.active-menu-panel .slide-menu-items li'
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).filter(function (item) {
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return visibleOffset(item) < 0;
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});
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var lastVisible =
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itemsBelow.length > 0 &&
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Math.abs(visibleOffset(itemsBelow[0])) < itemsBelow[0].clientHeight
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? itemsBelow[0]
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: visibleItems[visibleItems.length - 1];
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if (lastVisible) {
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if (
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lastVisible.classList.contains('selected') &&
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itemsBelow.length > 0
|
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) {
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// at bottom of viewport already, page scroll (if not at end)
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// ...move selected item to top, and change selection to last fully visible item at bottom
|
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scrollItemToTop(lastVisible);
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visibleItems = selectAll(
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'.active-menu-panel .slide-menu-items li'
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).filter(function (item) {
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return visibleOffset(item) == 0;
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});
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if (visibleItems[visibleItems.length - 1] == lastVisible) {
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// next item is still beyond the viewport (for custom panels)
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lastVisible = itemsBelow[0];
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} else {
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lastVisible = visibleItems[visibleItems.length - 1];
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}
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}
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selectAll('.active-menu-panel .slide-menu-items li').forEach(
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function (item) {
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item.classList.remove('selected');
|
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}
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);
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selectItem(lastVisible);
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// ensure selected item is positioned at the bottom of the viewport
|
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scrollItemToBottom(lastVisible);
|
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}
|
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break;
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// home
|
||
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case 36:
|
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selectAll('.active-menu-panel .slide-menu-items li').forEach(
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function (item) {
|
||
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item.classList.remove('selected');
|
||
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}
|
||
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);
|
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var item = select(
|
||
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'.active-menu-panel .slide-menu-items li:first-of-type'
|
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);
|
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if (item) {
|
||
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item.classList.add('selected');
|
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keepVisible(item);
|
||
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}
|
||
|
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break;
|
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// end
|
||
|
|
case 35:
|
||
|
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selectAll('.active-menu-panel .slide-menu-items li').forEach(
|
||
|
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function (item) {
|
||
|
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item.classList.remove('selected');
|
||
|
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}
|
||
|
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);
|
||
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var item = select(
|
||
|
|
'.active-menu-panel .slide-menu-items:last-of-type li:last-of-type'
|
||
|
|
);
|
||
|
|
if (item) {
|
||
|
|
item.classList.add('selected');
|
||
|
|
keepVisible(item);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
// space, return
|
||
|
|
case 32:
|
||
|
|
case 13:
|
||
|
|
var currItem = select(
|
||
|
|
'.active-menu-panel .slide-menu-items li.selected'
|
||
|
|
);
|
||
|
|
if (currItem) {
|
||
|
|
openItem(currItem, true);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
// esc
|
||
|
|
case 27:
|
||
|
|
closeMenu(null, true);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Utilty functions
|
||
|
|
//
|
||
|
|
|
||
|
|
function openMenu(event) {
|
||
|
|
if (event) event.preventDefault();
|
||
|
|
if (!isOpen()) {
|
||
|
|
select('body').classList.add('slide-menu-active');
|
||
|
|
select('.reveal').classList.add(
|
||
|
|
'has-' + options.effect + '-' + options.side
|
||
|
|
);
|
||
|
|
select('.slide-menu').classList.add('active');
|
||
|
|
select('.slide-menu-overlay').classList.add('active');
|
||
|
|
|
||
|
|
// identify active theme
|
||
|
|
if (options.themes) {
|
||
|
|
selectAll('div[data-panel="Themes"] li').forEach(function (i) {
|
||
|
|
i.classList.remove('active');
|
||
|
|
});
|
||
|
|
selectAll(
|
||
|
|
'li[data-theme="' + select('link#theme').getAttribute('href') + '"]'
|
||
|
|
).forEach(function (i) {
|
||
|
|
i.classList.add('active');
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
// identify active transition
|
||
|
|
if (options.transitions) {
|
||
|
|
selectAll('div[data-panel="Transitions"] li').forEach(function (i) {
|
||
|
|
i.classList.remove('active');
|
||
|
|
});
|
||
|
|
selectAll('li[data-transition="' + config.transition + '"]').forEach(
|
||
|
|
function (i) {
|
||
|
|
i.classList.add('active');
|
||
|
|
}
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
// set item selections to match active items
|
||
|
|
var items = selectAll('.slide-menu-panel li.active');
|
||
|
|
items.forEach(function (i) {
|
||
|
|
i.classList.add('selected');
|
||
|
|
keepVisible(i);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function closeMenu(event, force) {
|
||
|
|
if (event) event.preventDefault();
|
||
|
|
if (!options.sticky || force) {
|
||
|
|
select('body').classList.remove('slide-menu-active');
|
||
|
|
select('.reveal').classList.remove(
|
||
|
|
'has-' + options.effect + '-' + options.side
|
||
|
|
);
|
||
|
|
select('.slide-menu').classList.remove('active');
|
||
|
|
select('.slide-menu-overlay').classList.remove('active');
|
||
|
|
selectAll('.slide-menu-panel li.selected').forEach(function (i) {
|
||
|
|
i.classList.remove('selected');
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function toggleMenu(event) {
|
||
|
|
if (isOpen()) {
|
||
|
|
closeMenu(event, true);
|
||
|
|
} else {
|
||
|
|
openMenu(event);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function isOpen() {
|
||
|
|
return select('body').classList.contains('slide-menu-active');
|
||
|
|
}
|
||
|
|
|
||
|
|
function openPanel(event, ref) {
|
||
|
|
openMenu(event);
|
||
|
|
var panel = ref;
|
||
|
|
if (typeof ref !== 'string') {
|
||
|
|
panel = event.currentTarget.getAttribute('data-panel');
|
||
|
|
}
|
||
|
|
select('.slide-menu-toolbar > li.active-toolbar-button').classList.remove(
|
||
|
|
'active-toolbar-button'
|
||
|
|
);
|
||
|
|
select('li[data-panel="' + panel + '"]').classList.add(
|
||
|
|
'active-toolbar-button'
|
||
|
|
);
|
||
|
|
select('.slide-menu-panel.active-menu-panel').classList.remove(
|
||
|
|
'active-menu-panel'
|
||
|
|
);
|
||
|
|
select('div[data-panel="' + panel + '"]').classList.add(
|
||
|
|
'active-menu-panel'
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
function nextPanel() {
|
||
|
|
var next =
|
||
|
|
(parseInt(select('.active-toolbar-button').getAttribute('data-button')) +
|
||
|
|
1) %
|
||
|
|
buttons;
|
||
|
|
openPanel(
|
||
|
|
null,
|
||
|
|
select('.toolbar-panel-button[data-button="' + next + '"]').getAttribute(
|
||
|
|
'data-panel'
|
||
|
|
)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
function prevPanel() {
|
||
|
|
var next =
|
||
|
|
parseInt(select('.active-toolbar-button').getAttribute('data-button')) -
|
||
|
|
1;
|
||
|
|
if (next < 0) {
|
||
|
|
next = buttons - 1;
|
||
|
|
}
|
||
|
|
openPanel(
|
||
|
|
null,
|
||
|
|
select('.toolbar-panel-button[data-button="' + next + '"]').getAttribute(
|
||
|
|
'data-panel'
|
||
|
|
)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
function openItem(item, force) {
|
||
|
|
var h = parseInt(item.getAttribute('data-slide-h'));
|
||
|
|
var v = parseInt(item.getAttribute('data-slide-v'));
|
||
|
|
var theme = item.getAttribute('data-theme');
|
||
|
|
var highlightTheme = item.getAttribute('data-highlight-theme');
|
||
|
|
var transition = item.getAttribute('data-transition');
|
||
|
|
|
||
|
|
if (!isNaN(h) && !isNaN(v)) {
|
||
|
|
deck.slide(h, v);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (theme) {
|
||
|
|
changeStylesheet('theme', theme);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (highlightTheme) {
|
||
|
|
changeStylesheet('highlight-theme', highlightTheme);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (transition) {
|
||
|
|
deck.configure({ transition: transition });
|
||
|
|
}
|
||
|
|
|
||
|
|
var link = select('a', item);
|
||
|
|
if (link) {
|
||
|
|
if (
|
||
|
|
force ||
|
||
|
|
!options.sticky ||
|
||
|
|
(options.autoOpen && link.href.startsWith('#')) ||
|
||
|
|
link.href.startsWith(
|
||
|
|
window.location.origin + window.location.pathname + '#'
|
||
|
|
)
|
||
|
|
) {
|
||
|
|
link.click();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
closeMenu();
|
||
|
|
}
|
||
|
|
|
||
|
|
function clicked(event) {
|
||
|
|
if (event.target.nodeName !== 'A') {
|
||
|
|
event.preventDefault();
|
||
|
|
}
|
||
|
|
openItem(event.currentTarget);
|
||
|
|
}
|
||
|
|
|
||
|
|
function highlightCurrentSlide() {
|
||
|
|
var state = deck.getState();
|
||
|
|
selectAll('li.slide-menu-item, li.slide-menu-item-vertical').forEach(
|
||
|
|
function (item) {
|
||
|
|
item.classList.remove('past');
|
||
|
|
item.classList.remove('active');
|
||
|
|
item.classList.remove('future');
|
||
|
|
|
||
|
|
var h = parseInt(item.getAttribute('data-slide-h'));
|
||
|
|
var v = parseInt(item.getAttribute('data-slide-v'));
|
||
|
|
if (h < state.indexh || (h === state.indexh && v < state.indexv)) {
|
||
|
|
item.classList.add('past');
|
||
|
|
} else if (h === state.indexh && v === state.indexv) {
|
||
|
|
item.classList.add('active');
|
||
|
|
} else {
|
||
|
|
item.classList.add('future');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
function matchRevealStyle() {
|
||
|
|
var revealStyle = window.getComputedStyle(select('.reveal'));
|
||
|
|
var element = select('.slide-menu');
|
||
|
|
element.style.fontFamily = revealStyle.fontFamily;
|
||
|
|
//XXX could adjust the complete menu style to match the theme, ie colors, etc
|
||
|
|
}
|
||
|
|
|
||
|
|
var buttons = 0;
|
||
|
|
function initMenu() {
|
||
|
|
if (!initialised) {
|
||
|
|
var parent = select('.reveal').parentElement;
|
||
|
|
var top = create('div', { class: 'slide-menu-wrapper' });
|
||
|
|
parent.appendChild(top);
|
||
|
|
var panels = create('nav', {
|
||
|
|
class: 'slide-menu slide-menu--' + options.side
|
||
|
|
});
|
||
|
|
if (typeof options.width === 'string') {
|
||
|
|
if (
|
||
|
|
['normal', 'wide', 'third', 'half', 'full'].indexOf(options.width) !=
|
||
|
|
-1
|
||
|
|
) {
|
||
|
|
panels.classList.add('slide-menu--' + options.width);
|
||
|
|
} else {
|
||
|
|
panels.classList.add('slide-menu--custom');
|
||
|
|
panels.style.width = options.width;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
top.appendChild(panels);
|
||
|
|
matchRevealStyle();
|
||
|
|
var overlay = create('div', { class: 'slide-menu-overlay' });
|
||
|
|
top.appendChild(overlay);
|
||
|
|
overlay.onclick = function () {
|
||
|
|
closeMenu(null, true);
|
||
|
|
};
|
||
|
|
|
||
|
|
var toolbar = create('ol', { class: 'slide-menu-toolbar' });
|
||
|
|
select('.slide-menu').appendChild(toolbar);
|
||
|
|
|
||
|
|
function addToolbarButton(title, ref, icon, style, fn, active) {
|
||
|
|
var attrs = {
|
||
|
|
'data-button': '' + buttons++,
|
||
|
|
class:
|
||
|
|
'toolbar-panel-button' + (active ? ' active-toolbar-button' : '')
|
||
|
|
};
|
||
|
|
if (ref) {
|
||
|
|
attrs['data-panel'] = ref;
|
||
|
|
}
|
||
|
|
var button = create('li', attrs);
|
||
|
|
|
||
|
|
if (icon.startsWith('fa-')) {
|
||
|
|
button.appendChild(create('i', { class: style + ' ' + icon }));
|
||
|
|
} else {
|
||
|
|
button.innerHTML = icon + '</i>';
|
||
|
|
}
|
||
|
|
button.appendChild(create('br'), select('i', button));
|
||
|
|
button.appendChild(
|
||
|
|
create('span', { class: 'slide-menu-toolbar-label' }, title),
|
||
|
|
select('i', button)
|
||
|
|
);
|
||
|
|
button.onclick = fn;
|
||
|
|
toolbar.appendChild(button);
|
||
|
|
return button;
|
||
|
|
}
|
||
|
|
|
||
|
|
addToolbarButton('Slides', 'Slides', 'fa-images', 'fas', openPanel, true);
|
||
|
|
|
||
|
|
if (options.custom) {
|
||
|
|
options.custom.forEach(function (element, index, array) {
|
||
|
|
addToolbarButton(
|
||
|
|
element.title,
|
||
|
|
'Custom' + index,
|
||
|
|
element.icon,
|
||
|
|
null,
|
||
|
|
openPanel
|
||
|
|
);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
if (options.themes) {
|
||
|
|
addToolbarButton('Themes', 'Themes', 'fa-adjust', 'fas', openPanel);
|
||
|
|
}
|
||
|
|
if (options.transitions) {
|
||
|
|
addToolbarButton(
|
||
|
|
'Transitions',
|
||
|
|
'Transitions',
|
||
|
|
'fa-sticky-note',
|
||
|
|
'fas',
|
||
|
|
openPanel
|
||
|
|
);
|
||
|
|
}
|
||
|
|
var button = create('li', {
|
||
|
|
id: 'close',
|
||
|
|
class: 'toolbar-panel-button'
|
||
|
|
});
|
||
|
|
button.appendChild(create('i', { class: 'fas fa-times' }));
|
||
|
|
button.appendChild(create('br'));
|
||
|
|
button.appendChild(
|
||
|
|
create('span', { class: 'slide-menu-toolbar-label' }, 'Close')
|
||
|
|
);
|
||
|
|
button.onclick = function () {
|
||
|
|
closeMenu(null, true);
|
||
|
|
};
|
||
|
|
toolbar.appendChild(button);
|
||
|
|
|
||
|
|
//
|
||
|
|
// Slide links
|
||
|
|
//
|
||
|
|
function generateItem(type, section, i, h, v) {
|
||
|
|
var link = '/#/' + h;
|
||
|
|
if (typeof v === 'number' && !isNaN(v)) link += '/' + v;
|
||
|
|
|
||
|
|
function text(selector, parent) {
|
||
|
|
if (selector === '') return null;
|
||
|
|
var el = parent ? select(selector, section) : select(selector);
|
||
|
|
if (el) return el.textContent;
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
var title =
|
||
|
|
section.getAttribute('data-menu-title') ||
|
||
|
|
text('.menu-title', section) ||
|
||
|
|
text(options.titleSelector, section);
|
||
|
|
|
||
|
|
if (!title && options.useTextContentForMissingTitles) {
|
||
|
|
// attempt to figure out a title based on the text in the slide
|
||
|
|
title = section.textContent.trim();
|
||
|
|
if (title) {
|
||
|
|
title =
|
||
|
|
title
|
||
|
|
.split('\n')
|
||
|
|
.map(function (t) {
|
||
|
|
return t.trim();
|
||
|
|
})
|
||
|
|
.join(' ')
|
||
|
|
.trim()
|
||
|
|
.replace(/^(.{16}[^\s]*).*/, '$1') // limit to 16 chars plus any consecutive non-whitespace chars (to avoid breaking words)
|
||
|
|
.replace(/&/g, '&')
|
||
|
|
.replace(/</g, '<')
|
||
|
|
.replace(/>/g, '>')
|
||
|
|
.replace(/"/g, '"')
|
||
|
|
.replace(/'/g, ''') + '...';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!title) {
|
||
|
|
if (options.hideMissingTitles) return '';
|
||
|
|
type += ' no-title';
|
||
|
|
title = 'Slide ' + (i + 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
var item = create('li', {
|
||
|
|
class: type,
|
||
|
|
'data-item': i,
|
||
|
|
'data-slide-h': h,
|
||
|
|
'data-slide-v': v === undefined ? 0 : v
|
||
|
|
});
|
||
|
|
|
||
|
|
if (options.markers) {
|
||
|
|
item.appendChild(
|
||
|
|
create('i', { class: 'fas fa-check-circle fa-fw past' })
|
||
|
|
);
|
||
|
|
item.appendChild(
|
||
|
|
create('i', {
|
||
|
|
class: 'fas fa-arrow-alt-circle-right fa-fw active'
|
||
|
|
})
|
||
|
|
);
|
||
|
|
item.appendChild(
|
||
|
|
create('i', { class: 'far fa-circle fa-fw future' })
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (options.numbers) {
|
||
|
|
// Number formatting taken from reveal.js
|
||
|
|
var value = [];
|
||
|
|
var format = 'h.v';
|
||
|
|
|
||
|
|
// Check if a custom number format is available
|
||
|
|
if (typeof options.numbers === 'string') {
|
||
|
|
format = options.numbers;
|
||
|
|
} else if (typeof config.slideNumber === 'string') {
|
||
|
|
// Take user defined number format for slides
|
||
|
|
format = config.slideNumber;
|
||
|
|
}
|
||
|
|
|
||
|
|
switch (format) {
|
||
|
|
case 'c':
|
||
|
|
value.push(i + 1);
|
||
|
|
break;
|
||
|
|
case 'c/t':
|
||
|
|
value.push(i + 1, '/', deck.getTotalSlides());
|
||
|
|
break;
|
||
|
|
case 'h/v':
|
||
|
|
value.push(h + 1);
|
||
|
|
if (typeof v === 'number' && !isNaN(v)) value.push('/', v + 1);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
value.push(h + 1);
|
||
|
|
if (typeof v === 'number' && !isNaN(v)) value.push('.', v + 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
item.appendChild(
|
||
|
|
create(
|
||
|
|
'span',
|
||
|
|
{ class: 'slide-menu-item-number' },
|
||
|
|
value.join('') + '. '
|
||
|
|
)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
item.appendChild(
|
||
|
|
create('span', { class: 'slide-menu-item-title' }, title)
|
||
|
|
);
|
||
|
|
|
||
|
|
return item;
|
||
|
|
}
|
||
|
|
|
||
|
|
function createSlideMenu() {
|
||
|
|
if (
|
||
|
|
!document.querySelector(
|
||
|
|
'section[data-markdown]:not([data-markdown-parsed])'
|
||
|
|
)
|
||
|
|
) {
|
||
|
|
var panel = create('div', {
|
||
|
|
'data-panel': 'Slides',
|
||
|
|
class: 'slide-menu-panel active-menu-panel'
|
||
|
|
});
|
||
|
|
panel.appendChild(create('ul', { class: 'slide-menu-items' }));
|
||
|
|
panels.appendChild(panel);
|
||
|
|
var items = select(
|
||
|
|
'.slide-menu-panel[data-panel="Slides"] > .slide-menu-items'
|
||
|
|
);
|
||
|
|
var slideCount = 0;
|
||
|
|
selectAll('.slides > section').forEach(function (section, h) {
|
||
|
|
var subsections = selectAll('section', section);
|
||
|
|
if (subsections.length > 0) {
|
||
|
|
subsections.forEach(function (subsection, v) {
|
||
|
|
var type =
|
||
|
|
v === 0 ? 'slide-menu-item' : 'slide-menu-item-vertical';
|
||
|
|
var item = generateItem(type, subsection, slideCount, h, v);
|
||
|
|
if (item) {
|
||
|
|
items.appendChild(item);
|
||
|
|
}
|
||
|
|
slideCount++;
|
||
|
|
});
|
||
|
|
} else {
|
||
|
|
var item = generateItem(
|
||
|
|
'slide-menu-item',
|
||
|
|
section,
|
||
|
|
slideCount,
|
||
|
|
h
|
||
|
|
);
|
||
|
|
if (item) {
|
||
|
|
items.appendChild(item);
|
||
|
|
}
|
||
|
|
slideCount++;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
selectAll('.slide-menu-item, .slide-menu-item-vertical').forEach(
|
||
|
|
function (i) {
|
||
|
|
i.onclick = clicked;
|
||
|
|
}
|
||
|
|
);
|
||
|
|
highlightCurrentSlide();
|
||
|
|
} else {
|
||
|
|
// wait for markdown to be loaded and parsed
|
||
|
|
setTimeout(createSlideMenu, 100);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
createSlideMenu();
|
||
|
|
deck.addEventListener('slidechanged', highlightCurrentSlide);
|
||
|
|
|
||
|
|
//
|
||
|
|
// Custom menu panels
|
||
|
|
//
|
||
|
|
if (options.custom) {
|
||
|
|
function xhrSuccess() {
|
||
|
|
if (this.status >= 200 && this.status < 300) {
|
||
|
|
this.panel.innerHTML = this.responseText;
|
||
|
|
enableCustomLinks(this.panel);
|
||
|
|
} else {
|
||
|
|
showErrorMsg(this);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
function xhrError() {
|
||
|
|
showErrorMsg(this);
|
||
|
|
}
|
||
|
|
function loadCustomPanelContent(panel, sURL) {
|
||
|
|
var oReq = new XMLHttpRequest();
|
||
|
|
oReq.panel = panel;
|
||
|
|
oReq.arguments = Array.prototype.slice.call(arguments, 2);
|
||
|
|
oReq.onload = xhrSuccess;
|
||
|
|
oReq.onerror = xhrError;
|
||
|
|
oReq.open('get', sURL, true);
|
||
|
|
oReq.send(null);
|
||
|
|
}
|
||
|
|
function enableCustomLinks(panel) {
|
||
|
|
selectAll('ul.slide-menu-items li.slide-menu-item', panel).forEach(
|
||
|
|
function (item, i) {
|
||
|
|
item.setAttribute('data-item', i + 1);
|
||
|
|
item.onclick = clicked;
|
||
|
|
item.addEventListener('mouseenter', handleMouseHighlight);
|
||
|
|
}
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
function showErrorMsg(response) {
|
||
|
|
var msg =
|
||
|
|
'<p>ERROR: The attempt to fetch ' +
|
||
|
|
response.responseURL +
|
||
|
|
' failed with HTTP status ' +
|
||
|
|
response.status +
|
||
|
|
' (' +
|
||
|
|
response.statusText +
|
||
|
|
').</p>' +
|
||
|
|
'<p>Remember that you need to serve the presentation HTML from a HTTP server.</p>';
|
||
|
|
response.panel.innerHTML = msg;
|
||
|
|
}
|
||
|
|
|
||
|
|
options.custom.forEach(function (element, index, array) {
|
||
|
|
var panel = create('div', {
|
||
|
|
'data-panel': 'Custom' + index,
|
||
|
|
class: 'slide-menu-panel slide-menu-custom-panel'
|
||
|
|
});
|
||
|
|
if (element.content) {
|
||
|
|
panel.innerHTML = element.content;
|
||
|
|
enableCustomLinks(panel);
|
||
|
|
} else if (element.src) {
|
||
|
|
loadCustomPanelContent(panel, element.src);
|
||
|
|
}
|
||
|
|
panels.appendChild(panel);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Themes
|
||
|
|
//
|
||
|
|
if (options.themes) {
|
||
|
|
var panel = create('div', {
|
||
|
|
class: 'slide-menu-panel',
|
||
|
|
'data-panel': 'Themes'
|
||
|
|
});
|
||
|
|
panels.appendChild(panel);
|
||
|
|
var menu = create('ul', { class: 'slide-menu-items' });
|
||
|
|
panel.appendChild(menu);
|
||
|
|
options.themes.forEach(function (t, i) {
|
||
|
|
var attrs = {
|
||
|
|
class: 'slide-menu-item',
|
||
|
|
'data-item': '' + (i + 1)
|
||
|
|
};
|
||
|
|
if (t.theme) {
|
||
|
|
attrs['data-theme'] = t.theme;
|
||
|
|
}
|
||
|
|
if (t.highlightTheme) {
|
||
|
|
attrs['data-highlight-theme'] = t.highlightTheme;
|
||
|
|
}
|
||
|
|
var item = create('li', attrs, t.name);
|
||
|
|
menu.appendChild(item);
|
||
|
|
item.onclick = clicked;
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Transitions
|
||
|
|
//
|
||
|
|
if (options.transitions) {
|
||
|
|
var panel = create('div', {
|
||
|
|
class: 'slide-menu-panel',
|
||
|
|
'data-panel': 'Transitions'
|
||
|
|
});
|
||
|
|
panels.appendChild(panel);
|
||
|
|
var menu = create('ul', { class: 'slide-menu-items' });
|
||
|
|
panel.appendChild(menu);
|
||
|
|
options.transitions.forEach(function (name, i) {
|
||
|
|
var item = create(
|
||
|
|
'li',
|
||
|
|
{
|
||
|
|
class: 'slide-menu-item',
|
||
|
|
'data-transition': name.toLowerCase(),
|
||
|
|
'data-item': '' + (i + 1)
|
||
|
|
},
|
||
|
|
name
|
||
|
|
);
|
||
|
|
menu.appendChild(item);
|
||
|
|
item.onclick = clicked;
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Open menu options
|
||
|
|
//
|
||
|
|
if (options.openButton) {
|
||
|
|
// add menu button
|
||
|
|
var div = create('div', { class: 'slide-menu-button' });
|
||
|
|
var link = create('a', { href: '#' });
|
||
|
|
link.appendChild(create('i', { class: 'fas fa-bars' }));
|
||
|
|
div.appendChild(link);
|
||
|
|
select('.reveal').appendChild(div);
|
||
|
|
div.onclick = openMenu;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (options.openSlideNumber) {
|
||
|
|
var slideNumber = select('div.slide-number');
|
||
|
|
slideNumber.onclick = openMenu;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Handle mouse overs
|
||
|
|
//
|
||
|
|
selectAll('.slide-menu-panel .slide-menu-items li').forEach(function (
|
||
|
|
item
|
||
|
|
) {
|
||
|
|
item.addEventListener('mouseenter', handleMouseHighlight);
|
||
|
|
});
|
||
|
|
|
||
|
|
function handleMouseHighlight(event) {
|
||
|
|
if (mouseSelectionEnabled) {
|
||
|
|
selectAll('.active-menu-panel .slide-menu-items li.selected').forEach(
|
||
|
|
function (i) {
|
||
|
|
i.classList.remove('selected');
|
||
|
|
}
|
||
|
|
);
|
||
|
|
event.currentTarget.classList.add('selected');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (options.keyboard) {
|
||
|
|
//XXX add keyboard option for custom key codes, etc.
|
||
|
|
|
||
|
|
document.addEventListener('keydown', onDocumentKeyDown, false);
|
||
|
|
|
||
|
|
// handle key presses within speaker notes
|
||
|
|
window.addEventListener('message', function (event) {
|
||
|
|
var data;
|
||
|
|
try {
|
||
|
|
data = JSON.parse(event.data);
|
||
|
|
} catch (e) {}
|
||
|
|
if (data && data.method === 'triggerKey') {
|
||
|
|
onDocumentKeyDown({
|
||
|
|
keyCode: data.args[0],
|
||
|
|
stopImmediatePropagation: function () {}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
// Prevent reveal from processing keyboard events when the menu is open
|
||
|
|
if (
|
||
|
|
config.keyboardCondition &&
|
||
|
|
typeof config.keyboardCondition === 'function'
|
||
|
|
) {
|
||
|
|
// combine user defined keyboard condition with the menu's own condition
|
||
|
|
var userCondition = config.keyboardCondition;
|
||
|
|
config.keyboardCondition = function (event) {
|
||
|
|
return userCondition(event) && (!isOpen() || event.keyCode == 77);
|
||
|
|
};
|
||
|
|
} else {
|
||
|
|
config.keyboardCondition = function (event) {
|
||
|
|
return !isOpen() || event.keyCode == 77;
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
deck.addKeyBinding(
|
||
|
|
{ keyCode: 77, key: 'M', description: 'Toggle menu' },
|
||
|
|
toggleMenu
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (options.openOnInit) {
|
||
|
|
openMenu();
|
||
|
|
}
|
||
|
|
|
||
|
|
initialised = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Extend object a with the properties of object b.
|
||
|
|
* If there's a conflict, object b takes precedence.
|
||
|
|
*/
|
||
|
|
function extend(a, b) {
|
||
|
|
for (var i in b) {
|
||
|
|
a[i] = b[i];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Dispatches an event of the specified type from the
|
||
|
|
* reveal DOM element.
|
||
|
|
*/
|
||
|
|
function dispatchEvent(type, args) {
|
||
|
|
var event = document.createEvent('HTMLEvents', 1, 2);
|
||
|
|
event.initEvent(type, true, true);
|
||
|
|
extend(event, args);
|
||
|
|
document.querySelector('.reveal').dispatchEvent(event);
|
||
|
|
|
||
|
|
// If we're in an iframe, post each reveal.js event to the
|
||
|
|
// parent window. Used by the notes plugin
|
||
|
|
if (config.postMessageEvents && window.parent !== window.self) {
|
||
|
|
window.parent.postMessage(
|
||
|
|
JSON.stringify({
|
||
|
|
namespace: 'reveal',
|
||
|
|
eventName: type,
|
||
|
|
state: deck.getState()
|
||
|
|
}),
|
||
|
|
'*'
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
function select(selector, el) {
|
||
|
|
if (!el) {
|
||
|
|
el = document;
|
||
|
|
}
|
||
|
|
return el.querySelector(selector);
|
||
|
|
}
|
||
|
|
|
||
|
|
function selectAll(selector, el) {
|
||
|
|
if (!el) {
|
||
|
|
el = document;
|
||
|
|
}
|
||
|
|
return Array.prototype.slice.call(el.querySelectorAll(selector));
|
||
|
|
}
|
||
|
|
|
||
|
|
function create(tagName, attrs, content) {
|
||
|
|
var el = document.createElement(tagName);
|
||
|
|
if (attrs) {
|
||
|
|
Object.getOwnPropertyNames(attrs).forEach(function (n) {
|
||
|
|
el.setAttribute(n, attrs[n]);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
if (content) el.innerHTML = content;
|
||
|
|
return el;
|
||
|
|
}
|
||
|
|
|
||
|
|
function changeStylesheet(id, href) {
|
||
|
|
// take note of the previous theme and remove it, then create a new stylesheet reference and insert it
|
||
|
|
// this is required to force a load event so we can change the menu style to match the new style
|
||
|
|
var stylesheet = select('link#' + id);
|
||
|
|
var parent = stylesheet.parentElement;
|
||
|
|
var sibling = stylesheet.nextElementSibling;
|
||
|
|
stylesheet.remove();
|
||
|
|
|
||
|
|
var newStylesheet = stylesheet.cloneNode();
|
||
|
|
newStylesheet.setAttribute('href', href);
|
||
|
|
newStylesheet.onload = function () {
|
||
|
|
matchRevealStyle();
|
||
|
|
};
|
||
|
|
parent.insertBefore(newStylesheet, sibling);
|
||
|
|
}
|
||
|
|
|
||
|
|
// modified from math plugin
|
||
|
|
function loadResource(url, type, callback) {
|
||
|
|
var head = document.querySelector('head');
|
||
|
|
var resource;
|
||
|
|
|
||
|
|
if (type === 'script') {
|
||
|
|
resource = document.createElement('script');
|
||
|
|
resource.type = 'text/javascript';
|
||
|
|
resource.src = url;
|
||
|
|
} else if (type === 'stylesheet') {
|
||
|
|
resource = document.createElement('link');
|
||
|
|
resource.rel = 'stylesheet';
|
||
|
|
resource.href = url;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Wrapper for callback to make sure it only fires once
|
||
|
|
var finish = function () {
|
||
|
|
if (typeof callback === 'function') {
|
||
|
|
callback.call();
|
||
|
|
callback = null;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
resource.onload = finish;
|
||
|
|
|
||
|
|
// IE
|
||
|
|
resource.onreadystatechange = function () {
|
||
|
|
if (this.readyState === 'loaded') {
|
||
|
|
finish();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
// Normal browsers
|
||
|
|
head.appendChild(resource);
|
||
|
|
}
|
||
|
|
|
||
|
|
function loadPlugin() {
|
||
|
|
// does not support IE8 or below
|
||
|
|
var supported = !ieVersion || ieVersion >= 9;
|
||
|
|
|
||
|
|
// do not load the menu in the upcoming slide panel in the speaker notes
|
||
|
|
if (
|
||
|
|
deck.isSpeakerNotes() &&
|
||
|
|
window.location.search.endsWith('controls=false')
|
||
|
|
) {
|
||
|
|
supported = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (supported) {
|
||
|
|
if (!options.delayInit) initMenu();
|
||
|
|
dispatchEvent('menu-ready');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return {
|
||
|
|
id: 'menu',
|
||
|
|
init: reveal => {
|
||
|
|
deck = reveal;
|
||
|
|
config = deck.getConfig();
|
||
|
|
initOptions(config);
|
||
|
|
loadResource(options.path + 'menu.css', 'stylesheet', function () {
|
||
|
|
if (options.loadIcons === undefined || options.loadIcons) {
|
||
|
|
loadResource(
|
||
|
|
options.path + 'font-awesome/css/all.css',
|
||
|
|
'stylesheet',
|
||
|
|
loadPlugin
|
||
|
|
);
|
||
|
|
} else {
|
||
|
|
loadPlugin();
|
||
|
|
}
|
||
|
|
});
|
||
|
|
},
|
||
|
|
|
||
|
|
toggle: toggleMenu,
|
||
|
|
openMenu: openMenu,
|
||
|
|
closeMenu: closeMenu,
|
||
|
|
openPanel: openPanel,
|
||
|
|
isOpen: isOpen,
|
||
|
|
initialiseMenu: initMenu,
|
||
|
|
isMenuInitialised: function () {
|
||
|
|
return initialised;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
// polyfill
|
||
|
|
if (!String.prototype.startsWith) {
|
||
|
|
String.prototype.startsWith = function (searchString, position) {
|
||
|
|
return this.substr(position || 0, searchString.length) === searchString;
|
||
|
|
};
|
||
|
|
}
|
||
|
|
if (!String.prototype.endsWith) {
|
||
|
|
String.prototype.endsWith = function (search, this_len) {
|
||
|
|
if (this_len === undefined || this_len > this.length) {
|
||
|
|
this_len = this.length;
|
||
|
|
}
|
||
|
|
return this.substring(this_len - search.length, this_len) === search;
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
export default Plugin;
|