Fix player controls Space, Left, Right, Up, Down to behave consistently after page load or clicking individual controls. Not focusing the mute button anymore.
目前为
// ==UserScript==
// @name Youtube key shortcuts FIX
// @namespace https://github.com/GregHerendi
// @version 1.0.4
// @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.
// @author Greg Herendi
// @license MIT
// @copyright 2018, Greg Herendi (https://github.com/GregHerendi)
// @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 to url:
&disable_polymer=1
?disable_polymer=1
*/
/* Description:
#### Youtube player controls will work consistently when player is focused:
- Left / Right (5sec backwards / forwards), Up / Down (volume up / down), Home (restart video), End (skip to end)
- 0-9 (jump to 0%-90%), C (switch closed captions/subtitles), +/- (change cc font size): unaffected
#### Player is focused right after pageload, no need to click in player frame:
- Click outside player frame to get standard page controls: Up, Down, Left, Right (scroll)
- Press Esc to focus player, Shift-Esc to cycle search box, video list, like buttons / comments.
- Space pauses video on the whole webpage except textboxes.
#### Global shortcuts, changed:
- Esc (exit fullscreen): additionally focuses player when not in fullscreen
- Space (play/pause): works on whole page, not only when player is focused
#### Global shortcuts, unaffected:
- F (fullscreen), M (mute)
- K (play/pause)
- J / L (10sec backwards / forwards)
- , (previous frame), . (next frame)
- Shift-, (speed -0.25), Shift-. (speed +0.25)
- Shift-N (next video), Shift-P (previous video)
- / (focus searchfield, only in classic ui)
- ENTER (push the focused button)
#### Fixes the following awkward behaviour of Youtube player controls after clicking them (making the individual control focused):
- after clicking the mute button Space toggles mute instead of pausing
- after clicking the progressbar Up/Down will jump 10 sec in the video instead of changing the volume
- after clicking the volume slider Left/Right will change the volume instead of jumping the video.
- after clicking subtitle button Space will toggle subtitles
- after clicking settings button Space will toggle settings
- after clicking fullscreen button Space will toggle fullscreen
#### Sources of youtube shortcut behaviour:
https://shortcutworld.com/Youtube-Player/win/Youtube-Player_Shortcuts
https://www.hongkiat.com/blog/useful-youtube-keyboard-shortcuts-to-know/
https://support.google.com/youtube/answer/7631406?hl=en
2010: flash player? https://www.makeuseof.com/tag/comprehensive-guide-youtube-player-keyboard-shortcuts/
*/
/* Changelog:
1.0.4:
Shift-Esc cycles focus through 3 page areas: videos, masthead (search), content below video
Mousewheel over player ajusts volume
Switching to fullscreen focuses the player (enables Up/Down volume control, Left/Right jump)
player, video, comment focus is visualized (box-shadow style) on both classicUI and materialUI
clarify capturing event handlers captureKeydown(), captureFocus(): run at earlier phase than onKeydown()
support embedded player, cache playerElem; channel pages have a second player, that is unsupported yet and has the default behaviour
documented shortcut behaviour and sources
1.0.3:
added keydown handler: Esc switches focus between player and page, Space pauses anywhere on page, except textboxes
arrow keys are redirected from sliders directly to the player, no special behaviour when progressbar/volume slider is focused
therefore no more need to steal focus from player controls when clicked
tabindex set for player frame and removed for .caption-window
1.0.2:
support both classic and material design (polymer) html5 player
allow focusing by TAB: listen for mousedown & focus events to identify focusing by mouse
added css: translucent lightblue background for focused element to aid TABing
1.0.1:
support classic html5 player (#movie_player element is constructed later than userscript loaded)
also broke material design (polymer) html5 player support
@match *://
1.0: support material design (polymer) html5 player
*/
// Debug log
//console.log("Youtube keys fix: loaded");
(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();
// document.activeElement is not updated yet?
//console.log('Youtube keys fix: new activeElement=', document.activeElement);
return true;
/*
var done= (document.activeElement !== document.body && (document.activeElement !== oldFocus || oldFocus === newFocus));
if (done) console.log('Youtube keys fix: focused', document.activeElement);
else console.log('Youtube keys fix: failed to focus', newFocus);
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 willmove to movie list (2)
lastFocusedPageArea= null;
// To enter player at end of round: 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] );
}
function focusAreaDefaultElement() {
// Reset focus to area's default
var area= getFocusedArea();
// If not in area then focus player
if (area === 0) area= 1;
var done= tryFocus( $(areaFocusDefault[area]) );
if (!done) done= tryFocus( document.getElementById(areaContainers[area]) );
if (!done && area !== 1) done= tryFocus( $(areaFocusDefault[1]) );
}
function focusPlayer() {
// Reset focus to player if focus is inside player area
// Focus player's areaFocusedSubelement if outside
var done= (getFocusedArea() !== 1) && tryFocus( areaFocusedSubelement[1] );
if (!done) done= tryFocus( $(areaFocusDefault[1]) );
}
function handleEsc(event) {
event.preventDefault();
event.stopPropagation();
// Shift-Esc resets page focus to watch next video
if (event.shiftKey) focusNextArea();
//else if (??) focusAreaDefaultElement();
else focusPlayer();
// Show that focus indicator blue frame and background
$(playerElem).addClass('ytp-probably-keyboard-focus');
// Show focus border - it shows by default after pressing Tab
//$(document.documentElement).removeClass('no-focus-outline');
}
function onKeydown(event) {
// Debug log of key event
//if (event.key != 'Shift') console.log("Youtube keys fix: " + event.type + " " + event.which + " ->", event.target, 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)
// onKeydown not executed when fullscreen, and this should not handle Esc
if (event.which == 27) return handleEsc(event);
}
function redirectEvent(event, cloneEvent) {
if (!playerElem) initPlayer();
if (!playerElem || !$(playerElem).is(':visible()')) return;
//var cloneEvent= $.extend(new Event(event.type), event);
cloneEvent= cloneEvent || new Event(event.type);
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('Youtube keys fix: dispatch cloneEvent=', cloneEvent);
playerElem.dispatchEvent(cloneEvent);
}
// Solution from Youtube Plus: https://github.com/ParticleCore/Particle/blob/master/src/Userscript/YouTubePlus.user.js#L885
//var arrowKeys= { home/end/left/up/right/down };
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("Youtube keys fix: 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 are redirected: Home/End/Left/Up/Right/Down (35-40) to video position/volume
var redirectArrows= 35 <= 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("Youtube keys fix: capture " + event.type + " ->", event.target);
}
function redirectFocus(event, newFocus) {
if (!newFocus) return;
event.preventDefault();
event.stopPropagation();
event.stopImmediatePropagation();
//console.log('Youtube keys fix: redirect focus=', newFocus);
newFocus.focus();
}
function onMouse(event) {
// Called when mouse button is pressed/released over an element.
// Debug log of mouse button event
//console.log("Youtube keys fix: " + event.type + " ->", event.target);
// click outside of areas focuses player
if (0 === getAreaOf(event.target)) return redirectFocus(event, playerElem);
}
function onWheel(event) {
//console.log("Youtube keys fix: " + event.type + " " + event.deltaY + " phase " + event.eventPhase + " ->", event.currentTarget, event);
if (!playerElem.contains(event.target)) return;
var deltaY= null !== event.deltaY ? event.deltaY : event.wheelDeltaY;
/*
if (!playerElem || !playerElem.setVolume || !playerElem.getVolume) return;
//var videoElem= playerElem.querySelector('video');
//if (event.target !== videoElem) return;
var sign= Math.sign(deltaY);
var newVol= playerElem.getVolume() * 100 - (sign * 5);
console.log("Youtube keys fix: " + event.type + " set volume " + newVol, event);
playerElem.setVolume(newVol);
*/
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 onFullscreen(event) {
if (document.webkitFullscreenElement || document.mozFullScreenElement || document.msFullscreenElement) {
if (getFocusedArea() !== 1) {
onFullscreen.prevFocus= document.activeElement;
focusPlayer();
}
} 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("Youtube keys fix: 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);
// Cycle back focus when stepping out of player (Tab) -- not only for Tab, causes unexpected behaviour
//var newPlayerFocused= isSubelementOf(event.target, playerElem);
//if (playerFocused && !newPlayerFocused && areaFocusedSubelement[1] != playerElem) return redirectFocus(event, playerElem);
// areaFocusedSubelement[1] == playerElem: Shift-Tab would get stuck on the player, todo: find last element to focus
// -> $(playerElem).select('[tabindex][tabindex!=-1]').last()
// 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("onYouTubePlayerReady=", window.onYouTubePlayerReady);
window.onYouTubePlayerReady= chainInitFunc(initPlayer, window.onYouTubePlayerReady);
initEvents();
initStyle();
initDom();
//document.addEventListener("DOMContentLoaded", function() {
$(document).ready(function () {
//console.log("Youtube keys fix: $(document).ready()");
// Init if '#movie_player' is created.
//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
document.addEventListener('focus', captureFocus, true); // does not capture body.focus() in Opera, material design
//window.addEventListener('focusin', captureFocus);
// captureKeydown is run before original handlers to have a chance to modify the events
document.addEventListener('mousedown', onMouse);
// mousewheel on player adjusts volume
document.addEventListener('wheel', onWheel, true);
document.addEventListener('keydown', captureKeydown, true);
// onKeydown handles keypress in the bubbling phase to handle Esc.
document.addEventListener('keydown', onKeydown);
if (document.onwebkitfullscreenchange !== undefined) document.addEventListener('webkitfullscreenchange', onFullscreen);
if (document.onmozfullscreenchange !== undefined) document.addEventListener('mozfullscreenchange', onFullscreen);
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\
html:not(.no-focus-outline) #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:focus-within, \n\
html:not(.no-focus-outline) ytd-video-secondary-info-renderer #container:focus-within { box-shadow: 0 0 10px 0px rgba(0,0,0,0.4); }\n\
html:not(.no-focus-outline) ytd-comment-renderer:focus-within { box-shadow: 0 0 10px 0px rgba(0,0,0,0.3); }\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\
html:not(.no-focus-outline) #masthead-search-terms.masthead-search-terms-border:focus-within { border: 1px solid #4d90fe; box-shadow: inset 0px 0px 10px 2px #4d90fe; }\n\
html:not(.no-focus-outline) #watch-header:focus-within, \n\
html:not(.no-focus-outline) #action-panel-details:focus-within { box-shadow: 0 0 10px 0px rgba(0,0,0,0.4); }\n\
#watch-discussion { padding: 10px; }\n\
.comments-header-renderer { padding: 5px; }\n\
.comment-simplebox-renderer:focus-within .comment-simplebox-renderer-collapsed-content, \
.comment-simplebox-renderer:focus-within .comment-simplebox-frame { border-width: 3px; }\n\
.comment-simplebox-renderer:focus-within .comment-simplebox-arrow .arrow-inner { left: 7px; top: 3px; }\n\
.comment-section-sort-menu { margin-bottom: 10px; }\n\
.yt-alert-naked.yt-alert.zero-step-tooltip { margin-top: 20px; }\n\
html:not(.no-focus-outline) .comment-renderer:focus-within { box-shadow: 0 0 10px 0px rgba(0,0,0,0.3); }\n\
.comment-thread-renderer { margin: 0 0 25px 0; }\n\
.comment-renderer { padding: 5px; }\n\
.comment-renderer-content { position: relative; }\n\
.comment-replies-renderer .comment-renderer/*, .comment-replies-renderer .feedback-banner*/ { margin: 2px 0; }\n\
.comment-replies-renderer-view, .comment-replies-renderer-hide { margin: 1px 0 7px 5px; }\n\
.comment-replies-renderer-paginator { margin-top: 1px; margin-left: 5px; }\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() {
// @match *://*.youtube.com/embed/*
isMaterialUI= (null != document.getElementById('masthead'));
isClassicUI= (null != document.getElementById('yt-masthead-container'));
// with MaterialUI there is a leftover, emptied #player-api element
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', 'masthead-container', 'related', 'main' ]
: [ null, 'player', 'yt-masthead-container', 'watch7-sidebar', 'watch7-content' ];
/*
areaOrder= [ null, 'player', 'videos', 'masthead', 'title', 'description', 'comments' ];
areaContainers[1]= areaContainers.player= playerContainer;
areaContainers[2]= areaContainers.masthead= document.getElementById('masthead-container') || document.getElementById('yt-masthead-container');
areaContainers[3]= areaContainers.videos= document.getElementById('related') || document.getElementById('watch7-sidebar');
areaContainers[4]= areaContainers.content= document.getElementById('main') || document.getElementById('watch7-content');
areaContainers.length= 5;
areaContainers[4]= areaContainers.title= document.getElementById('info') || document.getElementById('watch-header');
areaContainers[5]= areaContainers.description= document.getElementById('meta') || document.getElementById('action-panel-details');
areaContainers[6]= areaContainers.comments= document.getElementById('comments') || document.getElementById('watch-discussion');
areaContainers.length= 7;
*/
// 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[5]= isMaterialUI ? '#meta paper-button:visible():last()' : '#action-panel-details button:visible():last()';
areaFocusDefault[6]= isMaterialUI ? '#comments #header #sort-menu paper-button:first()' : '#watch-discussion .comment-section-sort-menu 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("Youtube keys fix failed to find '#movie_player' element: not created yet");
return false;
}
//console.log("Youtube keys fix: initPlayer()");
// Movie player frame (element) is focused when loading the page to get movie player keyboard controls.
playerElem.focus();
$('#player .caption-window').attr('tabindex', '-1');
//var caption= playerElem.querySelector && playerElem.querySelector('.caption-window'); if (caption) caption.setAttribute('tabindex', -1);
}
})();