From 9522357349ecbed720eb61f7a04683d5c8421c72 Mon Sep 17 00:00:00 2001 From: Hakim El Hattab Date: Wed, 8 Apr 2020 13:05:28 +0200 Subject: [PATCH] changes to plugin api; registerPlugin only accepts plugin instance, instance exposes .id --- README.md | 18 ++++++++++-------- dist/reveal.min.js | 4 ++-- js/controllers/plugins.js | 27 +++++++++++++++++---------- plugin/highlight/highlight.js | 10 ++++++---- plugin/markdown/markdown.js | 11 +++++------ plugin/math/math.js | 10 ++++++---- plugin/notes/notes.js | 34 ++++++++++++++++++++-------------- plugin/zoom-js/zoom.js | 14 ++++++++------ test/test-plugins.html | 22 +++++++++++----------- 9 files changed, 85 insertions(+), 65 deletions(-) diff --git a/README.md b/README.md index f1a0af02..c3f8d4a5 100644 --- a/README.md +++ b/README.md @@ -466,8 +466,7 @@ You can add your own extensions using the same syntax. The following properties - **callback**: [optional] Function to execute when the script has loaded - **condition**: [optional] Function which must return true for the script to be loaded -You can also include dependencies which are bundled/already present on the page. To include a bundled plugin. replace the `src` property with a plugin `id` and a reference to the `plugin` instance: -- **id**: the id of the plugin +You can also include dependencies which are bundled/already present on the page. To include a bundled plugin. replace the `src` property with a reference to a `plugin` instance: - **plugin**: the plugin instance (see [Plugins](#plugins)) ### Ready Event @@ -1403,17 +1402,20 @@ Then: ## Plugins -Plugins should register themselves with reveal.js by calling `Reveal.registerPlugin( 'myPluginID', MyPlugin )`. Registered plugin instances can optionally expose an "init" function that reveal.js will call to initialize them. +Plugins should register themselves with reveal.js by calling `Reveal.registerPlugin( MyPlugin )`. Registered plugins _must_ expose a unique `id` property and can optionally expose an `init` function that reveal.js will call to initialize them. -When reveal.js is booted up via `Reveal.initialize()`, it will go through all registered plugins and invoke their "init" methods. If the "init" method returns a Promise, reveal.js will wait for that promise to be fulfilled before finishing the startup sequence and firing the [ready](#ready-event) event. Here's an example of a plugin that does some asynchronous work before reveal.js can proceed: +When reveal.js is booted up via `initialize()`, it will go through all registered plugins and invoke their `init` methods. If the `init` method returns a Promise, reveal.js will wait for that promise to be fulfilled before finishing the startup sequence and firing the [ready](#ready-event) event. Here's an example of a plugin that does some asynchronous work before reveal.js can proceed: ```javascript let MyPlugin = { - init: () => new Promise( resolve => setTimeout( resolve, 3000 ) ) + id: 'myPlugin', + init: deck => new Promise( resolve => setTimeout( resolve, 3000 ) ) }; -Reveal.registerPlugin( 'myPlugin', MyPlugin ); -Reveal.on( 'ready', () => console.log( 'Three seconds later...' ) ); -Reveal.initialize(); +Reveal.initialize({ + dependencies: [ { plugin: MyPlugin } ] +}).then( () => { + console.log( 'Three seconds later...' ) +} ); ``` Note that reveal.js will *not* wait for init Promise fulfillment if the plugin is loaded as an [async dependency](#dependencies). 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@@ -58,8 +60,8 @@ export default class Plugins { // Load synchronous scripts scripts.forEach( s => { - if( s.id ) { - this.registerPlugin( s.id, s.plugin ); + if( s.plugin ) { + this.registerPlugin( s.plugin ); scriptLoadedCallback( s ); } else { @@ -104,7 +106,7 @@ export default class Plugins { // If the plugin has an 'init' method, invoke it if( typeof plugin.init === 'function' ) { - let callback = plugin.init(); + let callback = plugin.init( this.Reveal ); // If the plugin returned a Promise, wait for it if( callback && typeof callback.then === 'function' ) { @@ -135,9 +137,9 @@ export default class Plugins { if( this.asyncDependencies.length ) { this.asyncDependencies.forEach( s => { - if( s.id ) { - this.registerPlugin( s.id, s.plugin ); - if( typeof s.plugin.init === 'function' ) s.plugin.init(); + if( s.plugin ) { + this.registerPlugin( s.plugin ); + if( typeof s.plugin.init === 'function' ) s.plugin.init( this.Reveal ); if( typeof s.callback === 'function' ) s.callback(); } else { @@ -157,15 +159,20 @@ export default class Plugins { * before considering itself ready, as long as the plugin * is registered before calling `Reveal.initialize()`. */ - registerPlugin( id, plugin ) { + registerPlugin( plugin ) { - if( this.registeredPlugins[id] === undefined ) { + let id = plugin.id; + + if( typeof id !== 'string' ) { + console.warn( 'reveal.js: plugin.id is not a string' ); + } + else if( this.registeredPlugins[id] === undefined ) { this.registeredPlugins[id] = plugin; // If a plugin is registered after reveal.js is loaded, // initialize it right away if( this.state === 'loaded' && typeof plugin.init === 'function' ) { - plugin.init(); + plugin.init( this.Reveal ); } } else { diff --git a/plugin/highlight/highlight.js b/plugin/highlight/highlight.js index 8d53afd2..16561b88 100644 --- a/plugin/highlight/highlight.js +++ b/plugin/highlight/highlight.js @@ -69,14 +69,16 @@ var RevealHighlight = { + id: 'highlight', + HIGHLIGHT_STEP_DELIMITER: '|', HIGHLIGHT_LINE_DELIMITER: ',', HIGHLIGHT_LINE_RANGE_DELIMITER: '-', - init: function() { + init: function( deck ) { // Read the plugin config options and provide fallbacks - var config = Reveal.getConfig().highlight || {}; + var config = deck.getConfig().highlight || {}; config.highlightOnLoad = typeof config.highlightOnLoad === 'boolean' ? config.highlightOnLoad : true; config.escapeHTML = typeof config.escapeHTML === 'boolean' ? config.escapeHTML : true; @@ -105,7 +107,7 @@ // If we're printing to PDF, scroll the code highlights of // all blocks in the deck into view at once - Reveal.on( 'pdf-ready', function() { + deck.on( 'pdf-ready', function() { [].slice.call( document.querySelectorAll( '.reveal pre code[data-line-numbers].current-fragment' ) ).forEach( function( block ) { RevealHighlight.scrollHighlightedLineIntoView( block, {}, true ); } ); @@ -416,7 +418,7 @@ } - Reveal.registerPlugin( 'highlight', RevealHighlight ); + Reveal.registerPlugin( RevealHighlight ); return RevealHighlight; diff --git a/plugin/markdown/markdown.js b/plugin/markdown/markdown.js index bd4de552..208d5452 100755 --- a/plugin/markdown/markdown.js +++ b/plugin/markdown/markdown.js @@ -403,14 +403,13 @@ // API var RevealMarkdown = { + id: 'markdown', + /** * Starts processing and converting Markdown within the * current reveal.js deck. - * - * @param {function} callback function to invoke once - * we've finished loading and parsing Markdown */ - init: function( callback ) { + init: function( deck ) { if( typeof marked === 'undefined' ) { throw 'The reveal.js Markdown plugin requires marked to be loaded'; @@ -425,7 +424,7 @@ } // marked can be configured via reveal.js config options - var options = Reveal.getConfig().markdown; + var options = deck.getConfig().markdown; if( options ) { marked.setOptions( options ); } @@ -443,7 +442,7 @@ // Register our plugin so that reveal.js will call our // plugin 'init' method as part of the initialization - Reveal.registerPlugin( 'markdown', RevealMarkdown ); + Reveal.registerPlugin( RevealMarkdown ); return RevealMarkdown; diff --git a/plugin/math/math.js b/plugin/math/math.js index 5bfc1d3d..2446f2ed 100755 --- a/plugin/math/math.js +++ b/plugin/math/math.js @@ -60,7 +60,9 @@ var RevealMath = window.RevealMath || (function(){ } return { - init: function() { + id: 'math', + + init: function( deck ) { defaults( options, defaultOptions ); defaults( options.tex2jax, defaultOptions.tex2jax ); @@ -73,10 +75,10 @@ var RevealMath = window.RevealMath || (function(){ // Typeset followed by an immediate reveal.js layout since // the typesetting process could affect slide height MathJax.Hub.Queue( [ 'Typeset', MathJax.Hub ] ); - MathJax.Hub.Queue( Reveal.layout ); + MathJax.Hub.Queue( deck.layout ); // Reprocess equations in slides when they turn visible - Reveal.on( 'slidechanged', function( event ) { + deck.on( 'slidechanged', function( event ) { MathJax.Hub.Queue( [ 'Typeset', MathJax.Hub, event.currentSlide ] ); @@ -89,4 +91,4 @@ var RevealMath = window.RevealMath || (function(){ })(); -Reveal.registerPlugin( 'math', RevealMath ); +Reveal.registerPlugin( RevealMath ); diff --git a/plugin/notes/notes.js b/plugin/notes/notes.js index 5eefeae6..0220961b 100644 --- a/plugin/notes/notes.js +++ b/plugin/notes/notes.js @@ -13,6 +13,8 @@ var RevealNotes = (function() { var notesPopup = null; + var deck; + function openNotes( notesFilePath ) { if (notesPopup && !notesPopup.closed) { @@ -46,7 +48,7 @@ var RevealNotes = (function() { namespace: 'reveal-notes', type: 'connect', url: window.location.protocol + '//' + window.location.host + window.location.pathname + window.location.search, - state: Reveal.getState() + state: deck.getState() } ), '*' ); }, 500 ); @@ -68,7 +70,7 @@ var RevealNotes = (function() { */ function callRevealApi( methodName, methodArguments, callId ) { - var result = Reveal[methodName].apply( Reveal, methodArguments ); + var result = deck[methodName].apply( deck, methodArguments ); notesPopup.postMessage( JSON.stringify( { namespace: 'reveal-notes', type: 'return', @@ -83,7 +85,7 @@ var RevealNotes = (function() { */ function post( event ) { - var slideElement = Reveal.getCurrentSlide(), + var slideElement = deck.getCurrentSlide(), notesElement = slideElement.querySelector( 'aside.notes' ), fragmentElement = slideElement.querySelector( '.current-fragment' ); @@ -93,7 +95,7 @@ var RevealNotes = (function() { notes: '', markdown: false, whitespace: 'normal', - state: Reveal.getState() + state: deck.getState() }; // Look for notes defined in a slide attribute @@ -134,13 +136,13 @@ var RevealNotes = (function() { function onConnected() { // Monitor events that trigger a change in state - Reveal.on( 'slidechanged', post ); - Reveal.on( 'fragmentshown', post ); - Reveal.on( 'fragmenthidden', post ); - Reveal.on( 'overviewhidden', post ); - Reveal.on( 'overviewshown', post ); - Reveal.on( 'paused', post ); - Reveal.on( 'resumed', post ); + deck.on( 'slidechanged', post ); + deck.on( 'fragmentshown', post ); + deck.on( 'fragmenthidden', post ); + deck.on( 'overviewhidden', post ); + deck.on( 'overviewshown', post ); + deck.on( 'paused', post ); + deck.on( 'resumed', post ); // Post the initial state post(); @@ -152,7 +154,11 @@ var RevealNotes = (function() { } return { - init: function() { + id: 'notes', + + init: function( revealInstance ) { + + deck = revealInstance; if( !/receiver/i.test( window.location.search ) ) { @@ -162,7 +168,7 @@ var RevealNotes = (function() { } // Open the notes when the 's' key is hit - Reveal.addKeyBinding({keyCode: 83, key: 'S', description: 'Speaker notes view'}, function() { + deck.addKeyBinding({keyCode: 83, key: 'S', description: 'Speaker notes view'}, function() { openNotes(); } ); @@ -175,4 +181,4 @@ var RevealNotes = (function() { })(); -Reveal.registerPlugin( 'notes', RevealNotes ); +Reveal.registerPlugin( RevealNotes ); diff --git a/plugin/zoom-js/zoom.js b/plugin/zoom-js/zoom.js index 92c3ba5b..41802402 100644 --- a/plugin/zoom-js/zoom.js +++ b/plugin/zoom-js/zoom.js @@ -2,15 +2,17 @@ var RevealZoom = (function(){ return { - init: function() { + id: 'zoom', - Reveal.getRevealElement().addEventListener( 'mousedown', function( event ) { + init: function( reveal ) { + + reveal.getRevealElement().addEventListener( 'mousedown', function( event ) { var defaultModifier = /Linux/.test( window.navigator.platform ) ? 'ctrl' : 'alt'; - var modifier = ( Reveal.getConfig().zoomKey ? Reveal.getConfig().zoomKey : defaultModifier ) + 'Key'; - var zoomLevel = ( Reveal.getConfig().zoomLevel ? Reveal.getConfig().zoomLevel : 2 ); + var modifier = ( reveal.getConfig().zoomKey ? reveal.getConfig().zoomKey : defaultModifier ) + 'Key'; + var zoomLevel = ( reveal.getConfig().zoomLevel ? reveal.getConfig().zoomLevel : 2 ); - if( event[ modifier ] && !Reveal.isOverview() ) { + if( event[ modifier ] && !reveal.isOverview() ) { event.preventDefault(); zoom.to({ @@ -27,7 +29,7 @@ var RevealZoom = (function(){ })(); -Reveal.registerPlugin( 'zoom', RevealZoom ); +Reveal.registerPlugin( RevealZoom ); /*! * zoom.js 0.3 (modified for use with reveal.js) diff --git a/test/test-plugins.html b/test/test-plugins.html index 27ebb1db..99eb91e4 100644 --- a/test/test-plugins.html +++ b/test/test-plugins.html @@ -34,15 +34,15 @@ var initCounter = { PluginB: 0, PluginC: 0, PluginD: 0 }; // Plugin with no init method - var PluginA = {}; + var PluginA = { id: 'PluginA' }; // Plugin with init method - var PluginB = { init: function() { + var PluginB = { id: 'PluginB', init: function() { initCounter['PluginB'] += 1; } }; // Async plugin with init method - var PluginC = { init: function() { + var PluginC = { id: 'PluginC', init: function() { return new Promise(function( resolve ) { setTimeout( () => { initCounter['PluginC'] += 1; @@ -52,24 +52,24 @@ } }; // Plugin initialized after reveal.js is ready - var PluginD = { init: function() { + var PluginD = { id: 'PluginD', init: function() { initCounter['PluginD'] += 1; } }; - var PluginE = {}; + var PluginE = { id: 'PluginE' }; var reveal = new Reveal( document.querySelector( '.reveal' ) ); - reveal.registerPlugin( 'PluginA', PluginA ); - reveal.registerPlugin( 'PluginB', PluginB ); - reveal.registerPlugin( 'PluginC', PluginC ); + reveal.registerPlugin( PluginA ); + reveal.registerPlugin( PluginB ); + reveal.registerPlugin( PluginC ); reveal.initialize(); QUnit.test( 'Can initialize synchronously', function( assert ) { assert.strictEqual( initCounter['PluginB'], 1 ); - reveal.registerPlugin( 'PluginB', PluginB ); + reveal.registerPlugin( PluginB ); assert.strictEqual( initCounter['PluginB'], 1, 'prevents duplicate registration' ); }); @@ -84,7 +84,7 @@ assert.strictEqual( initCounter['PluginC'], 1, 'finsihed initializing when reveal.js dispatches "ready"' ); done(); - reveal.registerPlugin( 'PluginD', PluginD ); + reveal.registerPlugin( PluginD ); assert.strictEqual( initCounter['PluginD'], 1, 'plugin registered after reveal.js is ready still initiailizes' ); done(); }); @@ -93,7 +93,7 @@ QUnit.test( 'Can check if plugin is registered', function( assert ) { assert.strictEqual( reveal.hasPlugin( 'PluginA' ), true ); assert.strictEqual( reveal.hasPlugin( 'PluginE' ), false ); - reveal.registerPlugin( 'PluginE', PluginE ); + reveal.registerPlugin( PluginE ); assert.strictEqual( reveal.hasPlugin( 'PluginE' ), true ); } );