youtubeHTML5プレイヤー再生時に自動ループする
// ==UserScript===
// @name youtube HTML5 Auto Loop
// @namespace youtube HTML5 Auto Loop
// @grant none
// @description youtubeHTML5プレイヤー再生時に自動ループする
// @author TNB
// @match *://*.youtube.com/*
// @version 1.0
// ==/UserScript==
var loop_off = {
when_enable_next_video_autoplay: false,
when_playlist: false,
with_embedded_video: false
};
var YoutubeHTML5AutoLoop = {
loop: '',
eventCache: {},
isLoop: function() {
var ele = {when_enable_next_video_autoplay:'input[type="checkbox"]:checked+label .unchecked', when_playlist:'#watch-appbar-playlist', with_embedded_video:'html[dir]'};
for (var i in loop_off) {
if (loop_off[i] && document.querySelector(ele[i])) {
return false;
}
}
return true;
},
init: function() {
this.loop = this.isLoop();
this.addListener();
},
loopOn: function() {
var video = document.getElementsByTagName('video')[0];
if (this.loop) {
video.setAttribute('loop', '');
} else {
video.removeAttribute('loop');
}
},
loopToggle: function() {
this.loop = this.loop? false: true;
this.loopOn();
},
loopDisplay: function() {
var video = document.querySelector('video:hover');
if (video) {
var checkBox = document.querySelector('[aria-checked]');
checkBox.setAttribute('aria-checked', this.loop);
if (!this.eventCache.addLoopToggle) {
checkBox.addEventListener('click', this, false);
this.eventCache.addLoopToggle = true;
}
}
},
watchAjax: function() {
var content = document.getElementById('page');
if (content) {
var ev = new CustomEvent('completedRequest'),
mo = new MutationObserver(function(){window.dispatchEvent(ev)});
mo.observe(content, {attributes:true, attributeFilter:['class']});
}
},
addListener: function() {
if (!this.eventCache.loadEvent) {
window.addEventListener('load', this, false);
window.addEventListener('contextmenu', this, false);
window.addEventListener('completedRequest', this, false);
this.eventCache.loadEvent = true;
}
if (loop_off.when_enable_next_video_autoplay) {
var autoplay = document.getElementById('autoplay-checkbox');
if (autoplay) {
autoplay.addEventListener('click', this, false);
}
}
},
handleEvent: function(e) {
switch(e.type) {
case 'load':
this.watchAjax();
this.loopOn();
break;
case 'contextmenu':
this.loopDisplay();
break;
case 'click':
this.loopToggle();
break;
case 'completedRequest':
this.init();
this.loopOn();
break;
}
}
};
YoutubeHTML5AutoLoop.init();