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YouTube ProgressBar Preserver

让你恒常地显示油管上的进度条(显示播放时间比例的红色条)。

当前为 2020-01-02 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name        YouTube ProgressBar Preserver
  3. // @name:ja     YouTube ProgressBar Preserver
  4. // @name:zh-CN  YouTube ProgressBar Preserver
  5. // @description It preserves YouTube's progress bar always visible even if the controls are hidden.
  6. // @description:ja YouTubeのプログレスバー(再生時刻の割合を示す赤いバー)を、隠さず常に表示させるようにします。
  7. // @description:zh-CN 让你恒常地显示油管上的进度条(显示播放时间比例的红色条)。
  8. // @namespace   knoa.jp
  9. // @include     https://www.youtube.com/*
  10. // @version     0.9
  11. // @grant       none
  12. // ==/UserScript==
  13.  
  14. (function(){
  15.   const SCRIPTID = 'YouTubeProgressBarPreserver';
  16.   const SCRIPTNAME = 'YouTube ProgressBar Preserver';
  17.   const DEBUG = false;/*
  18. [todo]
  19. カスタマイズ(color, height, opacity, 各表示モードでのオンオフ)
  20. うっすら時刻表示オプションほしい？
  21.  
  22. [memo]
  23. YouTubeによって隠されているときはオリジナルのバーは更新されないので、独自に作るほうがラク。
  24. 0.9完成後、youtube progressbar で検索したところすでに存在していることを発見＼(^o^)／
  25. https://addons.mozilla.org/ja/firefox/addon/progress-bar-for-youtube/
  26. カスタマイズできるしロード済みバッファにも対応するが、生放送に対応していない。プログレスが最低0.5秒単位でtransitionもない。
  27.   */
  28.   if(window === top && console.time) console.time(SCRIPTID);
  29.   const INTERVAL = 1000;/*for core.checkUrl*/
  30.   const STARTSWITH = [/*for core.checkUrl*/
  31.     'https://www.youtube.com/watch?v=',
  32.   ];
  33.   const RETRY = 10;
  34.   let site = {
  35.     targets: {
  36.       player: () => $('#movie_player'),
  37.       video: () => $('video[src]'),
  38.       time: () => $('.ytp-time-display'),
  39.     },
  40.     is: {
  41.       live: (time) => time.classList.contains('ytp-live'),
  42.     },
  43.   };
  44.   let html, elements = {}, timers = {};
  45.   let core = {
  46.     initialize: function(){
  47.       html = document.documentElement;
  48.       html.classList.add(SCRIPTID);
  49.       core.checkUrl();
  50.       core.addStyle();
  51.     },
  52.     checkUrl: function(){
  53.       let previousUrl = '';
  54.       timers.checkUrl = setInterval(function(){
  55.         if(document.hidden) return;
  56.         /* The page is visible, so... */
  57.         if(location.href === previousUrl) return;
  58.         else previousUrl = location.href;
  59.         /* The URL has changed, so... */
  60.         if(STARTSWITH.some(url => location.href.startsWith(url)) === false) return;
  61.         /* This page should be modified, so... */
  62.         core.ready();
  63.       }, INTERVAL);
  64.     },
  65.     ready: function(){
  66.       core.getTargets(site.targets, RETRY).then(() => {
  67.         log("I'm ready.");
  68.         core.appendBar();
  69.       });
  70.     },
  71.     appendBar: function(){
  72.       if(elements.bar && elements.bar.isConnected) return;
  73.       let bar = elements.bar = createElement(core.html.bar());
  74.       let progress = elements.progress = bar.firstElementChild;
  75.       elements.player.appendChild(bar);
  76.       core.observeTime(elements.time, bar);
  77.       core.observeVideo(elements.video, progress);
  78.     },
  79.     observeTime: function(time, bar){
  80.       let detect = function(time, bar){
  81.         if(site.is.live(time)) bar.classList.remove('active');
  82.         else bar.classList.add('active');
  83.       };
  84.       detect(time, bar);
  85.       let observer = observe(time, function(records){
  86.         detect(time, bar);
  87.       }, {attributes: true});
  88.     },
  89.     observeVideo: function(video, progress){
  90.       progress.style.transform = 'scaleX(0)';
  91.       video.addEventListener('timeupdate', function(e){
  92.         progress.style.transform = `scaleX(${video.currentTime / video.duration})`;
  93.       });
  94.     },
  95.     getTargets: function(targets, retry = 0){
  96.       const get = function(resolve, reject, retry){
  97.         for(let i = 0, keys = Object.keys(targets), key; key = keys[i]; i++){
  98.           let selected = targets[key]();
  99.           if(selected){
  100.             if(selected.length) selected.forEach((s) => s.dataset.selector = key);
  101.             else selected.dataset.selector = key;
  102.             elements[key] = selected;
  103.           }else{
  104.             if(--retry < 0) return reject(log(`Not found: ${key}, I give up.`));
  105.             log(`Not found: ${key}, retrying... (left ${retry})`);
  106.             return setTimeout(get, 1000, resolve, reject, retry);
  107.           }
  108.         }
  109.         resolve();
  110.       };
  111.       return new Promise(function(resolve, reject){
  112.         get(resolve, reject, retry);
  113.       });
  114.     },
  115.     addStyle: function(name = 'style'){
  116.       if(core.html[name] === undefined) return;
  117.       let style = createElement(core.html[name]());
  118.       document.head.appendChild(style);
  119.       if(elements[name] && elements[name].isConnected) document.head.removeChild(elements[name]);
  120.       elements[name] = style;
  121.     },
  122.     html: {
  123.       bar: () => `<div id="${SCRIPTID}-bar"><div id="${SCRIPTID}-progress"></div></div>`,
  124.       style: () => `
  125.         <style type="text/css">
  126.           #${SCRIPTID}-bar{
  127.             --height: 3px;
  128.             --background: rgba(255,255,255,.2);
  129.             --color: #f00;
  130.             --transition-bar: opacity .25s cubic-bezier(0.0,0.0,0.2,1);
  131.             --transition-progress: transform .25s linear;
  132.             --z-index: 100;
  133.           }
  134.           #${SCRIPTID}-bar{
  135.             width: 100%;
  136.             height: var(--height);
  137.             background: var(--background);
  138.             position: absolute;
  139.             bottom: 0;
  140.             transition: var(--transition-bar);
  141.             opacity: 0;
  142.             z-index: var(--z-index);
  143.           }
  144.           #${SCRIPTID}-progress{
  145.             width: 100%;
  146.             height: var(--height);
  147.             background: var(--color);
  148.             transition: var(--transition-progress);
  149.             transform-origin: 0 0;
  150.           }
  151.           .ytp-autohide #${SCRIPTID}-bar.active{
  152.             opacity: 1;
  153.           }
  154.         </style>
  155.       `,
  156.     },
  157.   };
  158.   const setTimeout = window.setTimeout, clearTimeout = window.clearTimeout, setInterval = window.setInterval, clearInterval = window.clearInterval, requestAnimationFrame = window.requestAnimationFrame;
  159.   const alert = window.alert, confirm = window.confirm, getComputedStyle = window.getComputedStyle, fetch = window.fetch;
  160.   if(!('isConnected' in Node.prototype)) Object.defineProperty(Node.prototype, 'isConnected', {get: function(){return document.contains(this)}});
  161.   class Storage{
  162.     static key(key){
  163.       return (SCRIPTID) ? (SCRIPTID + '-' + key) : key;
  164.     }
  165.     static save(key, value, expire = null){
  166.       key = Storage.key(key);
  167.       localStorage[key] = JSON.stringify({
  168.         value: value,
  169.         saved: Date.now(),
  170.         expire: expire,
  171.       });
  172.     }
  173.     static read(key){
  174.       key = Storage.key(key);
  175.       if(localStorage[key] === undefined) return undefined;
  176.       let data = JSON.parse(localStorage[key]);
  177.       if(data.value === undefined) return data;
  178.       if(data.expire === undefined) return data;
  179.       if(data.expire === null) return data.value;
  180.       if(data.expire < Date.now()) return localStorage.removeItem(key);
  181.       return data.value;
  182.     }
  183.     static delete(key){
  184.       key = Storage.key(key);
  185.       delete localStorage.removeItem(key);
  186.     }
  187.     static saved(key){
  188.       key = Storage.key(key);
  189.       if(localStorage[key] === undefined) return undefined;
  190.       let data = JSON.parse(localStorage[key]);
  191.       if(data.saved) return data.saved;
  192.       else return undefined;
  193.     }
  194.   }
  195.   const $ = function(s, f){
  196.     let target = document.querySelector(s);
  197.     if(target === null) return null;
  198.     return f ? f(target) : target;
  199.   };
  200.   const $$ = function(s){return document.querySelectorAll(s)};
  201.   const animate = function(callback, ...params){requestAnimationFrame(() => requestAnimationFrame(() => callback(...params)))};
  202.   const wait = function(ms){return new Promise((resolve) => setTimeout(resolve, ms))};
  203.   const createElement = function(html = '<span></span>'){
  204.     let outer = document.createElement('div');
  205.     outer.innerHTML = html;
  206.     return outer.firstElementChild;
  207.   };
  208.   const observe = function(element, callback, options = {childList: true, attributes: false, characterData: false, subtree: false}){
  209.     let observer = new MutationObserver(callback.bind(element));
  210.     observer.observe(element, options);
  211.     return observer;
  212.   };
  213.   const secondsToTime = function(seconds){
  214.     let floor = Math.floor, zero = (s) => s.toString().padStart(2, '0');
  215.     let h = floor(seconds/3600), m = floor(seconds/60)%60, s = floor(seconds%60);
  216.     if(h) return h + '時間' + zero(m) + '分' + zero(s) + '秒';
  217.     if(m) return m + '分' + zero(s) + '秒';
  218.     if(s) return s + '秒';
  219.   };
  220.   const timeToSeconds = function(time){
  221.     let parts = time.split(':').map(p => parseFloat(p));
  222.     switch(parts.length){
  223.       case(1): return parts[0];
  224.       case(2): return parts[0]*60 + parts[1];
  225.       case(3): return parts[0]*60*60 + parts[1]*60 + parts[2];
  226.       default: return 0;
  227.     }
  228.   };
  229.   const atLeast = function(min, b){
  230.     return Math.max(min, b);
  231.   };
  232.   const atMost = function(a, max){
  233.     return Math.min(a, max);
  234.   };
  235.   const between = function(min, b, max){
  236.     return Math.min(Math.max(min, b), max);
  237.   };
  238.   const toMetric = function(number, decimal = 1){
  239.     switch(true){
  240.       case(number < 1e3 ): return (number);
  241.       case(number < 1e6 ): return (number/1e3 ).toFixed(decimal) + 'K';
  242.       case(number < 1e9 ): return (number/1e6 ).toFixed(decimal) + 'M';
  243.       case(number < 1e12): return (number/1e9 ).toFixed(decimal) + 'G';
  244.       default:             return (number/1e12).toFixed(decimal) + 'T';
  245.     }
  246.   };
  247.   const log = function(){
  248.     if(!DEBUG) return;
  249.     let l = log.last = log.now || new Date(), n = log.now = new Date();
  250.     let error = new Error(), line = log.format.getLine(error), callers = log.format.getCallers(error);
  251.     //console.log(error.stack);
  252.     console.log(
  253.       (SCRIPTID || '') + ':',
  254.       /* 00:00:00.000  */ n.toLocaleTimeString() + '.' + n.getTime().toString().slice(-3),
  255.       /* +0.000s       */ '+' + ((n-l)/1000).toFixed(3) + 's',
  256.       /* :00           */ ':' + line,
  257.       /* caller.caller */ (callers[2] ? callers[2] + '() => ' : '') +
  258.       /* caller        */ (callers[1] || '') + '()',
  259.       ...arguments
  260.     );
  261.   };
  262.   log.formats = [{
  263.       name: 'Firefox Scratchpad',
  264.       detector: /MARKER@Scratchpad/,
  265.       getLine: (e) => e.stack.split('\n')[1].match(/([0-9]+):[0-9]+$/)[1],
  266.       getCallers: (e) => e.stack.match(/^[^@]*(?=@)/gm),
  267.     }, {
  268.       name: 'Firefox Console',
  269.       detector: /MARKER@debugger/,
  270.       getLine: (e) => e.stack.split('\n')[1].match(/([0-9]+):[0-9]+$/)[1],
  271.       getCallers: (e) => e.stack.match(/^[^@]*(?=@)/gm),
  272.     }, {
  273.       name: 'Firefox Greasemonkey 3',
  274.       detector: /\/gm_scripts\//,
  275.       getLine: (e) => e.stack.split('\n')[1].match(/([0-9]+):[0-9]+$/)[1],
  276.       getCallers: (e) => e.stack.match(/^[^@]*(?=@)/gm),
  277.     }, {
  278.       name: 'Firefox Greasemonkey 4+',
  279.       detector: /MARKER@user-script:/,
  280.       getLine: (e) => e.stack.split('\n')[1].match(/([0-9]+):[0-9]+$/)[1] - 500,
  281.       getCallers: (e) => e.stack.match(/^[^@]*(?=@)/gm),
  282.     }, {
  283.       name: 'Firefox Tampermonkey',
  284.       detector: /MARKER@moz-extension:/,
  285.       getLine: (e) => e.stack.split('\n')[1].match(/([0-9]+):[0-9]+$/)[1] - 6,
  286.       getCallers: (e) => e.stack.match(/^[^@]*(?=@)/gm),
  287.     }, {
  288.       name: 'Chrome Console',
  289.       detector: /at MARKER \(<anonymous>/,
  290.       getLine: (e) => e.stack.split('\n')[2].match(/([0-9]+):[0-9]+\)?$/)[1],
  291.       getCallers: (e) => e.stack.match(/[^ ]+(?= \(<anonymous>)/gm),
  292.     }, {
  293.       name: 'Chrome Tampermonkey',
  294.       detector: /at MARKER \(chrome-extension:.*?\/userscript.html\?id=/,
  295.       getLine: (e) => e.stack.split('\n')[2].match(/([0-9]+):[0-9]+\)?$/)[1] - 6,
  296.       getCallers: (e) => e.stack.match(/[^ ]+(?= \(chrome-extension:)/gm),
  297.     }, {
  298.       name: 'Chrome Extension',
  299.       detector: /at MARKER \(chrome-extension:/,
  300.       getLine: (e) => e.stack.split('\n')[2].match(/([0-9]+):[0-9]+\)?$/)[1],
  301.       getCallers: (e) => e.stack.match(/[^ ]+(?= \(chrome-extension:)/gm),
  302.     }, {
  303.       name: 'Edge Console',
  304.       detector: /at MARKER \(eval/,
  305.       getLine: (e) => e.stack.split('\n')[2].match(/([0-9]+):[0-9]+\)$/)[1],
  306.       getCallers: (e) => e.stack.match(/[^ ]+(?= \(eval)/gm),
  307.     }, {
  308.       name: 'Edge Tampermonkey',
  309.       detector: /at MARKER \(Function/,
  310.       getLine: (e) => e.stack.split('\n')[2].match(/([0-9]+):[0-9]+\)$/)[1] - 4,
  311.       getCallers: (e) => e.stack.match(/[^ ]+(?= \(Function)/gm),
  312.     }, {
  313.       name: 'Safari',
  314.       detector: /^MARKER$/m,
  315.       getLine: (e) => 0,/*e.lineが用意されているが最終呼び出し位置のみ*/
  316.       getCallers: (e) => e.stack.split('\n'),
  317.     }, {
  318.       name: 'Default',
  319.       detector: /./,
  320.       getLine: (e) => 0,
  321.       getCallers: (e) => [],
  322.     }];
  323.   log.format = log.formats.find(function MARKER(f){
  324.     if(!f.detector.test(new Error().stack)) return false;
  325.     //console.log('////', f.name, 'wants', 0/*line*/, '\n' + new Error().stack);
  326.     return true;
  327.   });
  328.   const time = function(label){
  329.     if(!DEBUG) return;
  330.     const BAR = '|', TOTAL = 100;
  331.     switch(true){
  332.       case(label === undefined):/* time() to output total */
  333.         let total = 0;
  334.         Object.keys(time.records).forEach((label) => total += time.records[label].total);
  335.         Object.keys(time.records).forEach((label) => {
  336.           console.log(
  337.             BAR.repeat((time.records[label].total / total) * TOTAL),
  338.             label + ':',
  339.             (time.records[label].total).toFixed(3) + 'ms',
  340.             '(' + time.records[label].count + ')',
  341.           );
  342.         });
  343.         time.records = {};
  344.         break;
  345.       case(!time.records[label]):/* time('label') to create and start the record */
  346.         time.records[label] = {count: 0, from: performance.now(), total: 0};
  347.         break;
  348.       case(time.records[label].from === null):/* time('label') to re-start the lap */
  349.         time.records[label].from = performance.now();
  350.         break;
  351.       case(0 < time.records[label].from):/* time('label') to add lap time to the record */
  352.         time.records[label].total += performance.now() - time.records[label].from;
  353.         time.records[label].from = null;
  354.         time.records[label].count += 1;
  355.         break;
  356.     }
  357.   };
  358.   time.records = {};
  359.   core.initialize();
  360.   if(window === top && console.timeEnd) console.timeEnd(SCRIPTID);
  361. })();