youtube再生時に自動ループする
От
// ==UserScript==
// @name youtube HTML5 Auto Loop
// @namespace youtube HTML5 Auto Loop
// @grant none
// @description youtube再生時に自動ループする
// @author TNB
// @match https://www.youtube.com/*
// @version 1.4.4
// ==/UserScript==
'use strict';
const loop_off = {
when_enable_next_video_autoplay: false,
when_playlist: false,
with_embedded_video: false
};
const YoutubeHTML5AutoLoop = {
loop: true,
videoId: null,
clickEventCache: false,
init: function() {
this.initLoop();
this.addListener();
},
isLoop: function() {
const ele = {
when_enable_next_video_autoplay: '#improved-toggle[aria-pressed="true"]',
when_playlist: '#playlist:not([hidden])',
with_embedded_video: 'html[data-cast-api-enabled]'
};
for (let i in loop_off) {
const target = document.querySelector(ele[i]);
if (loop_off[i]) {
if (i == 'when_enable_next_video_autoplay') {
const toggle = document.querySelector('#improved-toggle');
if (toggle) toggle.addEventListener('click', this, false);
}
if (target) return false;
}
}
return true;
},
initLoop: function() {
this.loop = this.isLoop();
this.loopOn();
},
loopOn: function() {
const video = document.querySelector('#' + this.videoId + ' video');
if (video) {
if (this.loop) {
video.setAttribute('loop', '');
} else {
video.removeAttribute('loop');
}
}
},
loopToggle: function() {
this.loop = this.loop? false: true;
this.loopOn();
},
loopDisplay: function() {
const video = document.querySelector('video:hover');
if (video) {
const checkBox = document.querySelector('.ytp-contextmenu [aria-checked]');
if (checkBox) {
checkBox.setAttribute('aria-checked', this.loop);
if (!this.clickEventCache) {
checkBox.addEventListener('click', this, false);
this.clickEventCache = true;
}
}
}
},
watchAjax: function() {
let prevSrc;
const mm = new MutationObserver(() => {
const video = document.querySelector('.playing-mode');
if (video) {
const currentSrc = video.querySelector('video').src;
if (currentSrc != prevSrc) {
prevSrc = currentSrc;
this.videoId = video.id;
this.initLoop();
}
}
});
mm.observe(document.body, {childList: true, subtree: true});
},
addListener: function() {
window.addEventListener('load', this, false);
window.addEventListener('contextmenu', this, false);
},
handleEvent: function(e) {
switch (e.type) {
case 'load':
this.watchAjax();
break;
case 'contextmenu':
this.loopDisplay();
break;
case 'click':
this.loopToggle();
break;
}
}
};
YoutubeHTML5AutoLoop.init();