From 3d6212378aeaed4ce2f4ffd070b79cecf221977e Mon Sep 17 00:00:00 2001 From: Hakim El Hattab Date: Tue, 10 Mar 2020 20:28:56 +0100 Subject: [PATCH] new keyboard module --- dist/reveal.min.js | 2 +- js/controllers/keyboard.js | 362 +++++++++++++++++++++++++++++++++++++ js/reveal.js | 361 ++++-------------------------------- 3 files changed, 396 insertions(+), 329 deletions(-) create mode 100644 js/controllers/keyboard.js diff --git a/dist/reveal.min.js b/dist/reveal.min.js index 1061ad54..c62e64e6 100644 --- a/dist/reveal.min.js +++ b/dist/reveal.min.js @@ -5,4 +5,4 @@ * * Copyright (C) 2020 Hakim El Hattab, https://hakim.se */ -!function(e){var t={};function a(i){if(t[i])return t[i].exports;var n=t[i]={i:i,l:!1,exports:{}};return e[i].call(n.exports,n,n.exports,a),n.l=!0,n.exports}a.m=e,a.c=t,a.d=function(e,t,i){a.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:i})},a.r=function(e){"undefined"!=typeof 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\ No newline at end of file diff --git a/js/controllers/keyboard.js b/js/controllers/keyboard.js new file mode 100644 index 00000000..6658cf95 --- /dev/null +++ b/js/controllers/keyboard.js @@ -0,0 +1,362 @@ +import { extend, toArray, enterFullscreen } from '../utils/util.js' + +/** + * + */ +export default class Keyboard { + + constructor( Reveal ) { + + this.Reveal = Reveal; + + // A key:value map of keyboard keys and descriptions of + // the actions they trigger + this.shortcuts = {}; + + // Holds custom key code mappings + this.bindings = {}; + + this.onDocumentKeyDown = this.onDocumentKeyDown.bind( this ); + this.onDocumentKeyPress = this.onDocumentKeyPress.bind( this ); + + } + + refreshSortcuts() { + + // Define our contextual list of keyboard shortcuts + if( this.Reveal.getConfig().navigationMode === 'linear' ) { + this.shortcuts['→ , ↓ , SPACE , N , L , J'] = 'Next slide'; + this.shortcuts['← , ↑ , P , H , K'] = 'Previous slide'; + } + else { + this.shortcuts['N , SPACE'] = 'Next slide'; + this.shortcuts['P'] = 'Previous slide'; + this.shortcuts['← , H'] = 'Navigate left'; + this.shortcuts['→ , L'] = 'Navigate right'; + this.shortcuts['↑ , K'] = 'Navigate up'; + this.shortcuts['↓ , J'] = 'Navigate down'; + } + + this.shortcuts['Home , Shift ←'] = 'First slide'; + this.shortcuts['End , Shift →'] = 'Last slide'; + this.shortcuts['B , .'] = 'Pause'; + this.shortcuts['F'] = 'Fullscreen'; + this.shortcuts['ESC, O'] = 'Slide overview'; + + } + + bind() { + + document.addEventListener( 'keydown', this.onDocumentKeyDown, false ); + document.addEventListener( 'keypress', this.onDocumentKeyPress, false ); + + } + + unbind() { + + document.removeEventListener( 'keydown', this.onDocumentKeyDown, false ); + document.removeEventListener( 'keypress', this.onDocumentKeyPress, false ); + + } + + /** + * Add a custom key binding with optional description to + * be added to the help screen. + */ + addKeyBinding( binding, callback ) { + + if( typeof binding === 'object' && binding.keyCode ) { + this.bindings[binding.keyCode] = { + callback: callback, + key: binding.key, + description: binding.description + }; + } + else { + this.bindings[binding] = { + callback: callback, + key: null, + description: null + }; + } + + } + + /** + * Removes the specified custom key binding. + */ + removeKeyBinding( keyCode ) { + + delete this.bindings[keyCode]; + + } + + /** + * Programmatically triggers a keyboard event + * + * @param {int} keyCode + */ + triggerKey( keyCode ) { + + this.onDocumentKeyDown( { keyCode } ); + + } + + /** + * Registers a new shortcut to include in the help overlay + * + * @param {String} key + * @param {String} value + */ + registerKeyboardShortcut( key, value ) { + + this.shortcuts[key] = value; + + } + + /** + * Handler for the document level 'keypress' event. + * + * @param {object} event + */ + onDocumentKeyPress( event ) { + + // Check if the pressed key is question mark + if( event.shiftKey && event.charCode === 63 ) { + this.Reveal.toggleHelp(); + } + + } + + /** + * Handler for the document level 'keydown' event. + * + * @param {object} event + */ + onDocumentKeyDown( event ) { + + let config = this.Reveal.getConfig(); + + // If there's a condition specified and it returns false, + // ignore this event + if( typeof config.keyboardCondition === 'function' && config.keyboardCondition(event) === false ) { + return true; + } + + // Shorthand + let keyCode = event.keyCode; + + // Remember if auto-sliding was paused so we can toggle it + let autoSlideWasPaused = !this.Reveal.isAutoSliding(); + + this.Reveal.onUserInput( event ); + + // Is there a focused element that could be using the keyboard? + let activeElementIsCE = document.activeElement && document.activeElement.contentEditable !== 'inherit'; + let activeElementIsInput = document.activeElement && document.activeElement.tagName && /input|textarea/i.test( document.activeElement.tagName ); + let activeElementIsNotes = document.activeElement && document.activeElement.className && /speaker-notes/i.test( document.activeElement.className); + + // Whitelist specific modified + keycode combinations + let prevSlideShortcut = event.shiftKey && event.keyCode === 32; + let firstSlideShortcut = event.shiftKey && keyCode === 37; + let lastSlideShortcut = event.shiftKey && keyCode === 39; + + // Prevent all other events when a modifier is pressed + let unusedModifier = !prevSlideShortcut && !firstSlideShortcut && !lastSlideShortcut && + ( event.shiftKey || event.altKey || event.ctrlKey || event.metaKey ); + + // Disregard the event if there's a focused element or a + // keyboard modifier key is present + if( activeElementIsCE || activeElementIsInput || activeElementIsNotes || unusedModifier ) return; + + // While paused only allow resume keyboard events; 'b', 'v', '.' + let resumeKeyCodes = [66,86,190,191]; + let key; + + // Custom key bindings for togglePause should be able to resume + if( typeof config.keyboard === 'object' ) { + for( key in config.keyboard ) { + if( config.keyboard[key] === 'togglePause' ) { + resumeKeyCodes.push( parseInt( key, 10 ) ); + } + } + } + + if( this.Reveal.isPaused() && resumeKeyCodes.indexOf( keyCode ) === -1 ) { + return false; + } + + // Use linear navigation if we're configured to OR if + // the presentation is one-dimensional + let useLinearMode = config.navigationMode === 'linear' || !this.Reveal.hasHorizontalSlides() || !this.Reveal.hasVerticalSlides(); + + let triggered = false; + + // 1. User defined key bindings + if( typeof config.keyboard === 'object' ) { + + for( key in config.keyboard ) { + + // Check if this binding matches the pressed key + if( parseInt( key, 10 ) === keyCode ) { + + let value = config.keyboard[ key ]; + + // Callback function + if( typeof value === 'function' ) { + value.apply( null, [ event ] ); + } + // String shortcuts to reveal.js API + else if( typeof value === 'string' && typeof this.Reveal[ value ] === 'function' ) { + this.Reveal[ value ].call(); + } + + triggered = true; + + } + + } + + } + + // 2. Registered custom key bindings + if( triggered === false ) { + + for( key in this.bindings ) { + + // Check if this binding matches the pressed key + if( parseInt( key, 10 ) === keyCode ) { + + let action = this.bindings[ key ].callback; + + // Callback function + if( typeof action === 'function' ) { + action.apply( null, [ event ] ); + } + // String shortcuts to reveal.js API + else if( typeof action === 'string' && typeof this.Reveal[ action ] === 'function' ) { + this.Reveal[ action ].call(); + } + + triggered = true; + } + } + } + + // 3. System defined key bindings + if( triggered === false ) { + + // Assume true and try to prove false + triggered = true; + + // P, PAGE UP + if( keyCode === 80 || keyCode === 33 ) { + this.Reveal.prev(); + } + // N, PAGE DOWN + else if( keyCode === 78 || keyCode === 34 ) { + this.Review.next(); + } + // H, LEFT + else if( keyCode === 72 || keyCode === 37 ) { + if( firstSlideShortcut ) { + this.Reveal.slide( 0 ); + } + else if( !this.Reveal.overview.isActive() && useLinearMode ) { + this.Reveal.prev(); + } + else { + this.Reveal.left(); + } + } + // L, RIGHT + else if( keyCode === 76 || keyCode === 39 ) { + if( lastSlideShortcut ) { + this.Reveal.slide( Number.MAX_VALUE ); + } + else if( !this.Reveal.overview.isActive() && useLinearMode ) { + this.Review.next(); + } + else { + this.Reveal.right(); + } + } + // K, UP + else if( keyCode === 75 || keyCode === 38 ) { + if( !this.Reveal.overview.isActive() && useLinearMode ) { + this.Reveal.prev(); + } + else { + this.Reveal.up(); + } + } + // J, DOWN + else if( keyCode === 74 || keyCode === 40 ) { + if( !this.Reveal.overview.isActive() && useLinearMode ) { + this.Review.next(); + } + else { + this.Reveal.down(); + } + } + // HOME + else if( keyCode === 36 ) { + this.Reveal.slide( 0 ); + } + // END + else if( keyCode === 35 ) { + this.Reveal.slide( Number.MAX_VALUE ); + } + // SPACE + else if( keyCode === 32 ) { + if( this.Reveal.overview.isActive() ) { + this.Reveal.overview.deactivate(); + } + if( event.shiftKey ) { + this.Reveal.prev(); + } + else { + this.Review.next(); + } + } + // TWO-SPOT, SEMICOLON, B, V, PERIOD, LOGITECH PRESENTER TOOLS "BLACK SCREEN" BUTTON + else if( keyCode === 58 || keyCode === 59 || keyCode === 66 || keyCode === 86 || keyCode === 190 || keyCode === 191 ) { + this.Reveal.togglePause(); + } + // F + else if( keyCode === 70 ) { + enterFullscreen(); + } + // A + else if( keyCode === 65 ) { + if ( config.autoSlideStoppable ) { + this.Reveal.toggleAutoSlide( autoSlideWasPaused ); + } + } + else { + triggered = false; + } + + } + + // If the input resulted in a triggered action we should prevent + // the browsers default behavior + if( triggered ) { + event.preventDefault && event.preventDefault(); + } + // ESC or O key + else if( keyCode === 27 || keyCode === 79 ) { + if( this.Reveal.closeOverlay() === false ) { + this.Reveal.overview.toggle(); + } + + event.preventDefault && event.preventDefault(); + } + + // If auto-sliding is enabled we need to cue up + // another timeout + this.Reveal.cueAutoSlide(); + + } + +} \ No newline at end of file diff --git a/js/reveal.js b/js/reveal.js index 10d5f8a0..c9d0fb16 100644 --- a/js/reveal.js +++ b/js/reveal.js @@ -2,6 +2,7 @@ import SlideContent from './controllers/slidecontent.js' import AutoAnimate from './controllers/autoanimate.js' import Fragments from './controllers/fragments.js' import Overview from './controllers/overview.js' +import Keyboard from './controllers/keyboard.js' import Plugins from './controllers/plugins.js' import Playback from './components/playback.js' import defaultConfig from './config.js' @@ -85,8 +86,12 @@ export default function( revealElement, options ) { // Controls navigation between slide fragments fragments = new Fragments( Reveal ), + // Controls the birds-eye overview of slides overview = new Overview( Reveal ), + // Controls all keyboard interactions + keyboard = new Keyboard( Reveal ), + // List of asynchronously loaded reveal.js dependencies asyncDependencies = [], @@ -121,14 +126,7 @@ export default function( revealElement, options ) { startCount: 0, captured: false, threshold: 40 - }, - - // A key:value map of shortcut keyboard keys and descriptions of - // the actions they trigger, generated in #configure() - keyboardShortcuts = {}, - - // Holds custom key code mappings - registeredKeyBindings = {}; + }; /** * Starts up the presentation if the client is capable. @@ -949,25 +947,7 @@ export default function( revealElement, options ) { dom.wrapper.removeAttribute( 'data-navigation-mode' ); } - // Define our contextual list of keyboard shortcuts - if( config.navigationMode === 'linear' ) { - keyboardShortcuts['→ , ↓ , SPACE , N , L , J'] = 'Next slide'; - keyboardShortcuts['← , ↑ , P , H , K'] = 'Previous slide'; - } - else { - keyboardShortcuts['N , SPACE'] = 'Next slide'; - keyboardShortcuts['P'] = 'Previous slide'; - keyboardShortcuts['← , H'] = 'Navigate left'; - keyboardShortcuts['→ , L'] = 'Navigate right'; - keyboardShortcuts['↑ , K'] = 'Navigate up'; - keyboardShortcuts['↓ , J'] = 'Navigate down'; - } - - keyboardShortcuts['Home , Shift ←'] = 'First slide'; - keyboardShortcuts['End , Shift →'] = 'Last slide'; - keyboardShortcuts['B , .'] = 'Pause'; - keyboardShortcuts['F'] = 'Fullscreen'; - keyboardShortcuts['ESC, O'] = 'Slide overview'; + keyboard.refreshSortcuts(); sync(); @@ -1005,8 +985,7 @@ export default function( revealElement, options ) { } if( config.keyboard ) { - document.addEventListener( 'keydown', onDocumentKeyDown, false ); - document.addEventListener( 'keypress', onDocumentKeyPress, false ); + keyboard.bind(); } if( config.progress && dom.progress ) { @@ -1047,8 +1026,8 @@ export default function( revealElement, options ) { eventsAreBound = false; - document.removeEventListener( 'keydown', onDocumentKeyDown, false ); - document.removeEventListener( 'keypress', onDocumentKeyPress, false ); + keyboard.unbind(); + window.removeEventListener( 'hashchange', onWindowHashChange, false ); window.removeEventListener( 'resize', onWindowResize, false ); @@ -1081,38 +1060,6 @@ export default function( revealElement, options ) { } - /** - * Add a custom key binding with optional description to - * be added to the help screen. - */ - function addKeyBinding( binding, callback ) { - - if( typeof binding === 'object' && binding.keyCode ) { - registeredKeyBindings[binding.keyCode] = { - callback: callback, - key: binding.key, - description: binding.description - }; - } - else { - registeredKeyBindings[binding] = { - callback: callback, - key: null, - description: null - }; - } - - } - - /** - * Removes the specified custom key binding. - */ - function removeKeyBinding( keyCode ) { - - delete registeredKeyBindings[keyCode]; - - } - /** * Applies CSS transforms to the slides container. The container * is transformed from two separate sources: layout and the overview @@ -1327,14 +1274,14 @@ export default function( revealElement, options ) { let html = '

Keyboard Shortcuts


'; html += ''; - for( let key in keyboardShortcuts ) { - html += ``; + for( let key in keyboard.shortcuts ) { + html += ``; } // Add custom key bindings that have associated descriptions - for( let binding in registeredKeyBindings ) { - if( registeredKeyBindings[binding].key && registeredKeyBindings[binding].description ) { - html += ``; + for( let binding in keyboard.registeredKeyBindings ) { + if( keyboard.registeredKeyBindings[binding].key && keyboard.registeredKeyBindings[binding].description ) { + html += ``; } } @@ -1366,8 +1313,11 @@ export default function( revealElement, options ) { if( dom.overlay ) { dom.overlay.parentNode.removeChild( dom.overlay ); dom.overlay = null; + return true; } + return false; + } /** @@ -3482,252 +3432,6 @@ export default function( revealElement, options ) { } - /** - * Handler for the document level 'keypress' event. - * - * @param {object} event - */ - function onDocumentKeyPress( event ) { - - // Check if the pressed key is question mark - if( event.shiftKey && event.charCode === 63 ) { - toggleHelp(); - } - - } - - /** - * Handler for the document level 'keydown' event. - * - * @param {object} event - */ - function onDocumentKeyDown( event ) { - - // If there's a condition specified and it returns false, - // ignore this event - if( typeof config.keyboardCondition === 'function' && config.keyboardCondition(event) === false ) { - return true; - } - - // Shorthand - let keyCode = event.keyCode; - - // Remember if auto-sliding was paused so we can toggle it - let autoSlideWasPaused = autoSlidePaused; - - onUserInput( event ); - - // Is there a focused element that could be using the keyboard? - let activeElementIsCE = document.activeElement && document.activeElement.contentEditable !== 'inherit'; - let activeElementIsInput = document.activeElement && document.activeElement.tagName && /input|textarea/i.test( document.activeElement.tagName ); - let activeElementIsNotes = document.activeElement && document.activeElement.className && /speaker-notes/i.test( document.activeElement.className); - - // Whitelist specific modified + keycode combinations - let prevSlideShortcut = event.shiftKey && event.keyCode === 32; - let firstSlideShortcut = event.shiftKey && keyCode === 37; - let lastSlideShortcut = event.shiftKey && keyCode === 39; - - // Prevent all other events when a modifier is pressed - let unusedModifier = !prevSlideShortcut && !firstSlideShortcut && !lastSlideShortcut && - ( event.shiftKey || event.altKey || event.ctrlKey || event.metaKey ); - - // Disregard the event if there's a focused element or a - // keyboard modifier key is present - if( activeElementIsCE || activeElementIsInput || activeElementIsNotes || unusedModifier ) return; - - // While paused only allow resume keyboard events; 'b', 'v', '.' - let resumeKeyCodes = [66,86,190,191]; - let key; - - // Custom key bindings for togglePause should be able to resume - if( typeof config.keyboard === 'object' ) { - for( key in config.keyboard ) { - if( config.keyboard[key] === 'togglePause' ) { - resumeKeyCodes.push( parseInt( key, 10 ) ); - } - } - } - - if( isPaused() && resumeKeyCodes.indexOf( keyCode ) === -1 ) { - return false; - } - - // Use linear navigation if we're configured to OR if - // the presentation is one-dimensional - let useLinearMode = config.navigationMode === 'linear' || !hasHorizontalSlides() || !hasVerticalSlides(); - - let triggered = false; - - // 1. User defined key bindings - if( typeof config.keyboard === 'object' ) { - - for( key in config.keyboard ) { - - // Check if this binding matches the pressed key - if( parseInt( key, 10 ) === keyCode ) { - - let value = config.keyboard[ key ]; - - // Callback function - if( typeof value === 'function' ) { - value.apply( null, [ event ] ); - } - // String shortcuts to reveal.js API - else if( typeof value === 'string' && typeof Reveal[ value ] === 'function' ) { - Reveal[ value ].call(); - } - - triggered = true; - - } - - } - - } - - // 2. Registered custom key bindings - if( triggered === false ) { - - for( key in registeredKeyBindings ) { - - // Check if this binding matches the pressed key - if( parseInt( key, 10 ) === keyCode ) { - - let action = registeredKeyBindings[ key ].callback; - - // Callback function - if( typeof action === 'function' ) { - action.apply( null, [ event ] ); - } - // String shortcuts to reveal.js API - else if( typeof action === 'string' && typeof Reveal[ action ] === 'function' ) { - Reveal[ action ].call(); - } - - triggered = true; - } - } - } - - // 3. System defined key bindings - if( triggered === false ) { - - // Assume true and try to prove false - triggered = true; - - // P, PAGE UP - if( keyCode === 80 || keyCode === 33 ) { - navigatePrev(); - } - // N, PAGE DOWN - else if( keyCode === 78 || keyCode === 34 ) { - navigateNext(); - } - // H, LEFT - else if( keyCode === 72 || keyCode === 37 ) { - if( firstSlideShortcut ) { - slide( 0 ); - } - else if( !overview.isActive() && useLinearMode ) { - navigatePrev(); - } - else { - navigateLeft(); - } - } - // L, RIGHT - else if( keyCode === 76 || keyCode === 39 ) { - if( lastSlideShortcut ) { - slide( Number.MAX_VALUE ); - } - else if( !overview.isActive() && useLinearMode ) { - navigateNext(); - } - else { - navigateRight(); - } - } - // K, UP - else if( keyCode === 75 || keyCode === 38 ) { - if( !overview.isActive() && useLinearMode ) { - navigatePrev(); - } - else { - navigateUp(); - } - } - // J, DOWN - else if( keyCode === 74 || keyCode === 40 ) { - if( !overview.isActive() && useLinearMode ) { - navigateNext(); - } - else { - navigateDown(); - } - } - // HOME - else if( keyCode === 36 ) { - slide( 0 ); - } - // END - else if( keyCode === 35 ) { - slide( Number.MAX_VALUE ); - } - // SPACE - else if( keyCode === 32 ) { - if( overview.isActive() ) { - overview.deactivate(); - } - if( event.shiftKey ) { - navigatePrev(); - } - else { - navigateNext(); - } - } - // TWO-SPOT, SEMICOLON, B, V, PERIOD, LOGITECH PRESENTER TOOLS "BLACK SCREEN" BUTTON - else if( keyCode === 58 || keyCode === 59 || keyCode === 66 || keyCode === 86 || keyCode === 190 || keyCode === 191 ) { - togglePause(); - } - // F - else if( keyCode === 70 ) { - enterFullscreen(); - } - // A - else if( keyCode === 65 ) { - if ( config.autoSlideStoppable ) { - toggleAutoSlide( autoSlideWasPaused ); - } - } - else { - triggered = false; - } - - } - - // If the input resulted in a triggered action we should prevent - // the browsers default behavior - if( triggered ) { - event.preventDefault && event.preventDefault(); - } - // ESC or O key - else if( keyCode === 27 || keyCode === 79 ) { - if( dom.overlay ) { - closeOverlay(); - } - else { - overview.toggle(); - } - - event.preventDefault && event.preventDefault(); - } - - // If auto-sliding is enabled we need to cue up - // another timeout - cueAutoSlide(); - - } - /** * Handler for the 'touchstart' event, enables support for * swipe and pinch gestures. @@ -4069,6 +3773,14 @@ export default function( revealElement, options ) { prevFragment: fragments.prev.bind( fragments ), nextFragment: fragments.next.bind( fragments ), + // Forward event binding to the reveal DOM element + addEventListener: ( type, listener, useCapture ) => { + Reveal.getRevealElement().addEventListener( type, listener, useCapture ); + }, + removeEventListener: ( type, listener, useCapture ) => { + Reveal.getRevealElement().removeEventListener( type, listener, useCapture ); + }, + // Forces an update in slide layout layout, @@ -4155,29 +3867,19 @@ export default function( revealElement, options ) { hasVerticalSlides, // Adds/removes a custom key binding - addKeyBinding, - removeKeyBinding, + addKeyBinding: keyboard.addKeyBinding.bind( keyboard ), + removeKeyBinding: keyboard.removeKeyBinding.bind( keyboard ), // Programmatically triggers a keyboard event - triggerKey: keyCode => onDocumentKeyDown( { keyCode } ), + triggerKey: keyboard.triggerKey.bind( keyboard ), // Registers a new shortcut to include in the help overlay - registerKeyboardShortcut: ( key, value ) => keyboardShortcuts[key] = value, - - // Forward event binding to the reveal DOM element - addEventListener: ( type, listener, useCapture ) => { - Reveal.getRevealElement().addEventListener( type, listener, useCapture ); - }, - removeEventListener: ( type, listener, useCapture ) => { - Reveal.getRevealElement().removeEventListener( type, listener, useCapture ); - }, + registerKeyboardShortcut: keyboard.registerKeyboardShortcut.bind( keyboard ), // API for registering and retrieving plugins registerPlugin: plugins.registerPlugin.bind( plugins ), hasPlugin: plugins.hasPlugin.bind( plugins ), getPlugin: plugins.getPlugin.bind( plugins ), - - // Returns a hash with all registered plugins getPlugins: plugins.getRegisteredPlugins.bind( plugins ), getComputedSlideSize, @@ -4232,7 +3934,10 @@ export default function( revealElement, options ) { announceStatus, getStatusText, + overview, slideContent, + onUserInput, + closeOverlay, updateControls, updateProgress, updateSlidesVisibility,
KEYACTION
${key}${keyboardShortcuts[ key ]}
${key}${keyboard.shortcuts[ key ]}
${registeredKeyBindings[binding].key}${registeredKeyBindings[binding].description}
${keyboard.registeredKeyBindings[binding].key}${keyboard.registeredKeyBindings[binding].description}