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// ==UserScript==
// @name Youtube key shortcuts FIX
// @namespace https://github.com/GregHerendi
// @homepageURL https://github.com/GregHerendi/YoutubeKeysFix
// @supportURL https://github.com/GregHerendi/YoutubeKeysFix/issues
// @downloadURL https://github.com/GregHerendi/YoutubeKeysFix/raw/master/YoutubeKeysFix.user.js
// @updateURL https://openuserjs.org/meta/Gregorius/Youtube_key_shortcuts_FIX.meta.js
// @version 1.1.1
// @description Fix player controls Space, Left, Right, Up, Down to behave consistently after page load or clicking individual controls. Not focusing the mute button anymore.
// @icon http://youtube.com/yts/img/favicon_32-vflOogEID.png
// @author Greg Herendi
// @license MIT
// @copyright 2018, Greg Herendi (https://github.com/GregHerendi)
// @match *://www.youtube.com/*
// @match *://*.youtube.com/*
// @exclude *://*.youtube.com/tv*
// @exclude *://*.youtube.com/live_chat*
// @grant none
// @require http://code.jquery.com/jquery-latest.js
// ==/UserScript==
/* To test classicUI add the appropriate one of the following to Youtube url:
&disable_polymer=1
?disable_polymer=1
*/
(function () {
'use strict';
var playerContainer; // = document.getElementById('player-container') || document.getElementById('player') in embeds
var playerElem; // = document.getElementById('movie_player') || playerContainer.querySelector('.html5-video-player') in embeds
//var playerFocused;
var isMaterialUI, isClassicUI;
var lastFocusedPageArea;
var areaOrder= [ null ], areaContainers= [ null ], areaFocusDefault= [ null ], areaFocusedSubelement= [ null ];
//var areaContainers= {}, areaFocusedSubelement= {};
function isSubelementOf(elementWithin, ancestor) {
if (! ancestor) return null;
for (; elementWithin; elementWithin= elementWithin.parentElement) {
if (elementWithin.id == ancestor) return true;
}
return false;
}
function getAreaOf(elementWithin) {
for (var i= 1; i<areaContainers.length; i++) if (isSubelementOf(elementWithin, areaContainers[i])) return i;
return 0;
//for (var area in areaContainers) if (isSubelementOf(document.activeElement, areaContainers[area])) return area;
}
function getFocusedArea() { return getAreaOf(document.activeElement); }
function tryFocus(newFocus) {
newFocus= $(newFocus);
if (! newFocus.length) return null;
if (! newFocus.is(':visible()')) return false;
//var oldFocus= document.activeElement;
newFocus.focus();
var done= (newFocus[0] === document.activeElement);
if (! done) console.log('YoutubeKeysFix: failed to focus newFocus=, activeElement=', newFocus[0], document.activeElement);
return done;
}
function focusNextArea() {
// Focus next area's areaFocusedSubelement (activeElement)
var currentArea= getFocusedArea() || 0;
var nextArea= (lastFocusedPageArea && lastFocusedPageArea !== currentArea) ? lastFocusedPageArea : currentArea + 1;
// captureFocus() will store lastFocusedPageArea again if moving to a non-player area
// if moving to the player then lastFocusedPageArea resets, Shift-Esc will move to search bar (area 2)
lastFocusedPageArea= null;
// To enter player after last area: nextArea= 1; To skip player: nextArea= 2;
if (nextArea >= areaContainers.length) nextArea= 2;
var done= tryFocus( areaFocusedSubelement[nextArea] );
if (! done) done= tryFocus( $(areaFocusDefault[nextArea]) );
//if (! done) done= tryFocus( areaContainers[nextArea] );
return done;
}
function focusPlayer() {
var player= $(areaFocusDefault[1]);
if (! player[0]) return false;
// If focus was outside player
var focusSubelement= ! player[0].contains(document.activeElement) && areaFocusedSubelement[1];
// And focusSubelement is inside player then focus that finally
if (focusSubelement === player[0] || focusSubelement && ! player[0].contains(focusSubelement)) focusSubelement= null;
// Focus player first to scroll into view, then the subelement
var done= tryFocus(player);
if (! done) return false;
// Focus player's areaFocusedSubelement if focus was outside player area
done= focusSubelement && tryFocus(focusSubelement);
// Show that focus indicator blue frame and background if subelement got focus
if (done) player.addClass('ytp-probably-keyboard-focus');
return true;
}
function handleEsc(event) {
if (event.shiftKey) {
// Shift-Esc only implemented for watch page
if (window.location.pathname !== "/watch") return;
// Not in fullscreen
if (getFullscreen()) return;
// show focus outline when navigating focus
$(document.documentElement).removeClass('no-focus-outline');
// Bring focus to next area
focusNextArea();
} else {
var handled= focusPlayer();
if (! handled) return;
}
event.preventDefault();
event.stopPropagation();
}
function onKeydown(event) {
// Debug log of key event
//if (event.key != 'Shift') console.log("YoutubeKeysFix: " + event.type + " " + event.which + " ->", event.target, event);
if (event.which == 9) {
// show focus outline when navigating focus
$(document.documentElement).removeClass('no-focus-outline');
}
// event.target is the focused element (that received the keypress)
// event not received when fullscreen in Opera (already handled by browser)
if (event.which == 27) return handleEsc(event);
}
function redirectEvent(event, cloneEvent) {
if (! playerElem) initPlayer();
if (! playerElem || ! $(playerElem).is(':visible()')) return;
cloneEvent= cloneEvent || new Event(event.type);
//var cloneEvent= $.extend(cloneEvent, event);
cloneEvent.redirectedEvent= event;
// shallow copy every property
for (var k in event) if (! (k in cloneEvent)) cloneEvent[k]= event[k];
event.preventDefault();
event.stopPropagation();
event.stopImmediatePropagation();
//console.log('YoutubeKeysFix: dispatch cloneEvent=', cloneEvent);
playerElem.dispatchEvent(cloneEvent);
}
// Tag list from Youtube Plus: https://github.com/ParticleCore/Particle/blob/master/src/Userscript/YouTubePlus.user.js#L885
var keyHandlingElements= { INPUT:1, TEXTAREA:1, IFRAME:1, OBJECT:1, EMBED:1 };
function captureKeydown(event) {
// Debug log of key event
//if (event.key != 'Shift') console.log("YoutubeKeysFix: capture " + event.type + " " + event.which + " ->", event); //, event);
// Esc switches focus between player(player-api/player-container(movie_player)) and webpage outside the player(masthead(buttons)/main(related/info/meta/comments))
// event.target is focused (received the keypress)
// captureKeydown not executed when fullscreen, and this should not handle Esc
var textbox= keyHandlingElements[event.target.tagName] || event.target.isContentEditable;// || event.target.getAttribute('role') == 'textbox';
// capture only in textboxes to override their behaviour, general handling in onKeydown()
if (event.which == 27 && textbox) return handleEsc(event);
// Tab: do the default
//if (event.which == 9) return;
// Ignore events for the playerElem to avoid recursion
//if (playerElem == document.activeElement) return;
if (playerElem === event.target) return;
// Redirect Space (32) to pause video, if not in a textbox
var redirectSpace= 32 == event.which && !textbox;
// Sliders' key handling behaviour is inconsistent with the default player behaviour. To disable them
// arrowkey events (33-40: PageUp/PageDown/End/Home/Left/Up/Right/Down) are redirected to page scroll/video position/volume
var redirectArrows= 33 <= event.which && event.which <= 40 && event.target.getAttribute('role') == 'slider' && isSubelementOf(event.target, 'player');
if (redirectSpace || redirectArrows) return redirectEvent(event);
}
function captureMouse(event) {
// Called when mouse button is pressed/released over an element.
// Debug log of mouse button event
//console.log("YoutubeKeysFix: capture " + event.type + " ->", event.target);
// hide focus outline when clicking
$(document.documentElement).addClass('no-focus-outline');
}
function redirectFocus(event, newFocus) {
if (! newFocus) return;
event.preventDefault();
event.stopPropagation();
event.stopImmediatePropagation();
//console.log('YoutubeKeysFix: redirect focus=', newFocus);
newFocus.focus();
}
function onMouse(event) {
// Called when mouse button is pressed over an element.
// Debug log of mouse button event
//console.log("YoutubeKeysFix: " + event.type + " ->", event.target);
// click outside of areas focuses player
if (0 === getAreaOf(event.target)) return redirectFocus(event, playerElem);
}
function onWheel(event) {
//console.log("YoutubeKeysFix: " + event.type + " " + event.deltaY + " phase " + event.eventPhase + " ->", event.currentTarget, event);
if (! playerElem || ! playerElem.contains(event.target)) return;
var deltaY= null !== event.deltaY ? event.deltaY : event.wheelDeltaY;
var up= deltaY <= 0; // null == 0 -> up
var cloneEvent= new Event('keydown');
cloneEvent.which= cloneEvent.keyCode= up ? 38 : 40;
cloneEvent.key= up ? 'ArrowUp': 'ArrowDown';
redirectEvent(event, cloneEvent);
}
function getFullscreen() {
return document.webkitFullscreenElement || document.mozFullScreenElement || document.msFullscreenElement;
}
function onFullscreen(event) {
var fullscreen= getFullscreen();
if (fullscreen) {
if ( !fullscreen.contains(document.activeElement) ) {
onFullscreen.prevFocus= document.activeElement;
fullscreen.focus();
}
} else if (onFullscreen.prevFocus) {
onFullscreen.prevFocus.focus();
onFullscreen.prevFocus= null;
}
}
function captureFocus(event) {
// Called when an element gets focus (by clicking or TAB)
// Debug log of focused element
//console.log("YoutubeKeysFix: capture " + event.type + " ->", event.target);
// Window will focus the activeElement, do nothing at the moment
if (event.target === window) return;
// Focus player if focusing body (default focus, eg. pressing Esc)
if (event.target === document.body) return redirectFocus(event, areaFocusedSubelement[1] || playerElem);
// Save focused element inside player or on page
var area= getAreaOf(event.target);
//if (0 === area) return redirectFocus(event, playerElem);
if (0 !== area) {
areaFocusedSubelement[area]= event.target;
//if (areaContainers[area]) document.getElementById(areaContainers[area]).activeElement= event.target;
// store if not focusing player area
if (area !== 1) lastFocusedPageArea= area;
}
}
function chainInitFunc(f1, f2) {
return (function() {
//$(document).ready(f1);
if (f1) f1.apply(this, arguments);
if (f2) f2.apply(this, arguments);
});
}
// Run init on onYouTubePlayerReady ('#movie_player' created).
//console.log("YoutubeKeysFix: loading, onYouTubePlayerReady=", window.onYouTubePlayerReady);
window.onYouTubePlayerReady= chainInitFunc(initPlayer, window.onYouTubePlayerReady);
initEvents();
initStyle();
initDom();
//document.addEventListener("DOMContentLoaded", function() {
$(document).ready(function () {
//console.log("YoutubeKeysFix: $(document).ready()");
//initDom();
initPlayer();
});
function initEvents() {
// Handlers are capture type to see all events before they are consumed
document.addEventListener('mousedown', captureMouse, true);
//document.addEventListener('mouseup', captureMouse, true);
// captureFocus captures focus changes before the event is handled
// does not capture body.focus() in Opera, material design
document.addEventListener('focus', captureFocus, true);
//window.addEventListener('focusin', captureFocus);
document.addEventListener('mousedown', onMouse);
// mousewheel over player area adjusts volume
document.addEventListener('wheel', onWheel, true);
// captureKeydown is run before original handlers to have a chance to modify the events
document.addEventListener('keydown', captureKeydown, true);
// onKeydown handles keypress in the bubbling phase to handle Esc if not handled by the focused element
document.addEventListener('keydown', onKeydown);
if (document.onfullscreenchange !== undefined) document.addEventListener('fullscreenchange', onFullscreen);
else if (document.onwebkitfullscreenchange !== undefined) document.addEventListener('webkitfullscreenchange', onFullscreen);
else if (document.onmozfullscreenchange !== undefined) document.addEventListener('mozfullscreenchange', onFullscreen);
else if (document.MSFullscreenChange !== undefined) document.addEventListener('MSFullscreenChange', onFullscreen);
}
function initStyle() {
// Style for materialUI player, video list item, comment highlight:
// #masthead-container is present on all materialUI pages: index, watch, etc.
if (document.getElementById('masthead')) $(document.head).append('<style name="yt-fix-materialUI type="text/css">\n\
#player-container:focus-within { box-shadow: 0 0 20px 0px rgba(0,0,0,0.8); }\n\
.ytp-probably-keyboard-focus :focus { background-color: rgba(120, 180, 255, 0.6); }\n\
//html:not(.no-focus-outline) ytd-video-primary-info-renderer > #container > #info:focus-within, \n\
//html:not(.no-focus-outline) ytd-video-secondary-info-renderer > #container > #top-row:focus-within, \n\
//html:not(.no-focus-outline) ytd-video-secondary-info-renderer > #container > .description:focus-within \n\
//{ box-shadow: 0 0 10px 0px rgba(0,0,0,0.4); }\n\
html:not(.no-focus-outline) ytd-compact-video-renderer #dismissable:focus-within { box-shadow: 0 0 15px 1px rgba(0,0,100,0.4); }\n\
a.yt-simple-endpoint.ytd-compact-video-renderer { margin-top: 3px; }\n\
</style>');
// Style for classicUI player, video list item, comment-simplebox highlight and layout rearranging for the highlight:
// #yt-masthead-container is present on all classicUI pages: index, watch, etc.
if (document.getElementById('yt-masthead-container')) $(document.head).append('<style name="yt-fix-classicUI" type="text/css">\n\
#player-api:focus-within { box-shadow: 0 0 20px 0px rgba(0,0,0,0.8); }\n\
.ytp-probably-keyboard-focus :focus { background-color: rgba(120, 180, 255, 0.6); }\n\
#masthead-search-terms.masthead-search-terms-border:focus-within { border: 1px solid #4d90fe; box-shadow: inset 0px 0px 8px 0px #4d90fe; }\n\
html:not(.no-focus-outline) #watch-header:focus-within, \n\
html:not(.no-focus-outline) #action-panel-details:focus-within, \n\
html:not(.no-focus-outline) #watch-discussion:focus-within \n\
{ box-shadow: 0 0 10px 0px rgba(0,0,0,0.4); }\n\
html:not(.no-focus-outline) .video-list-item:focus-within { box-shadow: 0 0 15px 1px rgba(0,0,100,0.4); }\n\
html:not(.no-focus-outline) .video-list-item:focus-within .related-item-action-menu .yt-uix-button { opacity: 1; }\n\
html:not(.no-focus-outline) .video-list-item:focus-within .video-actions { right: 2px; }\n\
html:not(.no-focus-outline) .video-list-item:focus-within .video-time, \n\
html:not(.no-focus-outline) .related-list-item:focus-within .video-time-overlay { right: -60px; }\n\
#watch7-sidebar-contents { padding-right: 10px; }\n\
#watch7-sidebar-contents .checkbox-on-off { margin-right: 5px; }\n\
#watch7-sidebar .watch-sidebar-head { margin-bottom: 5px; margin-left: 0; }\n\
#watch7-sidebar .watch-sidebar-section { padding-left: 5px; margin-bottom: 0; }\n\
#watch7-sidebar .watch-sidebar-separation-line { margin: 10px 5px; }\n\
.video-list-item .thumb-wrapper { margin: 0; }\n\
.video-list-item { margin-left: 5px; }\n\
.video-list-item .content-wrapper a { padding-top: 3px; min-height: 91px; }\n\
.related-list-item .content-wrapper { margin-left: 176px; margin-right: 5px; }\n\
.related-list-item .related-item-action-menu { top: 3px; right: 0; }\n\
.related-item-dismissable .related-item-action-menu .yt-uix-button { margin: 0; height: 20px; width: 20px; }\n\
</style>');
}
function initDom() {
isMaterialUI= (null !== document.getElementById('masthead'));
isClassicUI= (null !== document.getElementById('yt-masthead-container'));
// MaterialUI has an extra #player.skeleton > #player-api element, remnant of the classicUI, different from the one expected here
// The one with the video: ytd-watch > #top > #player > #player-container.ytd-watch (> #movie_player.html5-video-player)
playerContainer= isMaterialUI ? document.getElementById('player-container') : isClassicUI ? document.getElementById('player-api') : document.getElementById('player');
// isEmbeddedUI= !isMaterialUI && !isClassicUI;
// Areas' root elements
areaOrder= [ null, 'player', 'masthead', 'videos', 'content' ];
areaContainers= isMaterialUI ? [ null, 'player-container', 'masthead-container', 'related', 'main' ]
: [ null, 'player-api', 'yt-masthead-container', 'watch7-sidebar', 'watch7-content' ];
// Areas' default element to focus
areaFocusDefault[0]= null;
areaFocusDefault[1]= isMaterialUI || isClassicUI ? '#movie_player' : '#player .html5-video-player';
areaFocusDefault[2]= isMaterialUI ? '#masthead input#search' : '#masthead-search-term';
areaFocusDefault[3]= isMaterialUI ? '#items a.ytd-compact-video-renderer:first()' : '#watch7-sidebar-modules a.content-link:first()';
areaFocusDefault[4]= isMaterialUI ? '#info #menu #top-level-buttons button:last()' : '#watch8-action-buttons button:first()';
areaFocusDefault.length= 5;
}
function initPlayer() {
if (playerElem) return;
// The movie player frame '#movie_player', might not be generated yet.
playerElem= document.getElementById('movie_player') || $('#player .html5-video-player')[0];
if (! playerElem) {
console.log("YoutubeKeysFix failed to find '#movie_player' element: not created yet");
return false;
}
//console.log("YoutubeKeysFix: initPlayer()");
// Movie player frame (element) is focused when loading the page to get movie player keyboard controls.
if (window.location.pathname === "/watch") playerElem.focus();
$('#player .caption-window').attr('tabindex', '-1');
//var caption= playerElem.querySelector && playerElem.querySelector('.caption-window'); if (caption) caption.setAttribute('tabindex', -1);
}
})();