☰

Tabview Youtube

Make comments and lists into tabs

当前为 2022-05-09 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Tabview Youtube
  3. // @namespace    http://tampermonkey.net/
  4. // @version      2.1.1
  5. // @description  Make comments and lists into tabs
  6. // @author       CY Fung
  7. // @match       https://www.youtube.com/*
  8. // @resource     contentCSS https://raw.githubusercontent.com/cyfung1031/Tabview-Youtube/4546739b1eb4224a62a431fe1b23a7b8201d4f17/css/style_content.css
  9. // @resource     injectionJS1 https://raw.githubusercontent.com/cyfung1031/Tabview-Youtube/4546739b1eb4224a62a431fe1b23a7b8201d4f17/js/injection_script_1.js
  10. // @resource     injectionFixAutoComplete https://raw.githubusercontent.com/cyfung1031/Tabview-Youtube/4546739b1eb4224a62a431fe1b23a7b8201d4f17/js/injectionScript_fixAutoComplete.js
  11. // @icon         https://github.com/cyfung1031/Tabview-Youtube/raw/main/images/icon128p.png
  12. // @require      https://cdnjs.cloudflare.com/ajax/libs/cash/8.1.0/cash.min.js
  13. // @grant        GM_getResourceText
  14. // @run-at       document-start
  15. // @license      MIT https://github.com/cyfung1031/Tabview-Youtube/blob/main/LICENSE
  16. // @noframes
  17. // ==/UserScript==
  18.  
  19. /* jshint esversion:6 */
  20.  
  21. function main($){
  22.     // MIT License
  23.     // https://github.com/cyfung1031/Tabview-Youtube/raw/main/js/content.js
  24.  
  25.  
  26.  
  27.  
  28.  
  29.  
  30.  
  31.  
  32.  
  33.  
  34.  
  35.  
  36.  
  37.  
  38.  
  39.  
  40.  
  41.  
  42.  
  43.  
  44.  
  45.  
  46.  
  47. -(function() {
  48.  
  49.   function inIframe() {
  50.     try {
  51.       return window.self !== window.top;
  52.     } catch (e) {
  53.       return true;
  54.     }
  55.   }
  56.  
  57.   if (inIframe()) return;
  58.  
  59.   if (!$) return;
  60.  
  61.   /**
  62.    * SVG resources:
  63.    * <div>Icons made by <a href="https://www.flaticon.com/authors/smashicons" title="Smashicons">Smashicons</a> from <a href="https://www.flaticon.com/" title="Flaticon">www.flaticon.com</a></div>
  64.    */
  65.  
  66.   const scriptVersionForExternal = '2022/05/07';
  67.  
  68.   //const githubURLBase = "https://raw.githubusercontent.com/cyfung1031/Tabview-Youtube";
  69.   //const githubURLCommit = "bdf401045266e5224663f80b276bc7f56d122b8d";
  70.  
  71.   const isMyScriptInChromeRuntime = () => typeof((((window || 0).chrome || 0).runtime || 0).getURL) == 'function'
  72.  
  73.  
  74.   const svgComments = `
  75.     <path d="M40.068,13.465L5.93,13.535c-3.27,0-5.93,2.66-5.93,5.93v21.141c0,3.27,2.66,5.929,5.93,5.929H12v10
  76.     c0,0.413,0.254,0.784,0.64,0.933c0.117,0.045,0.239,0.067,0.36,0.067c0.276,0,0.547-0.115,0.74-0.327l9.704-10.675l16.626-0.068
  77.     c3.27,0,5.93-2.66,5.93-5.929V19.395C46,16.125,43.34,13.465,40.068,13.465z M10,23.465h13c0.553,0,1,0.448,1,1s-0.447,1-1,1H10
  78.     c-0.553,0-1-0.448-1-1S9.447,23.465,10,23.465z M36,37.465H10c-0.553,0-1-0.448-1-1s0.447-1,1-1h26c0.553,0,1,0.448,1,1
  79.     S36.553,37.465,36,37.465z M36,31.465H10c-0.553,0-1-0.448-1-1s0.447-1,1-1h26c0.553,0,1,0.448,1,1S36.553,31.465,36,31.465z"/>
  80.     <path d="M54.072,2.535L19.93,2.465c-3.27,0-5.93,2.66-5.93,5.93v3.124l26.064-0.054c4.377,0,7.936,3.557,7.936,7.93v21.07v0.071
  81.     v2.087l3.26,3.586c0.193,0.212,0.464,0.327,0.74,0.327c0.121,0,0.243-0.022,0.36-0.067c0.386-0.149,0.64-0.52,0.64-0.933v-10h1.07
  82.     c3.27,0,5.93-2.66,5.93-5.929V8.465C60,5.195,57.34,2.535,54.072,2.535z"/>
  83.     `.trim();
  84.  
  85.   const svgVideos = `<path d="M298,33c0-13.255-10.745-24-24-24H24C10.745,9,0,19.745,0,33v232c0,13.255,10.745,24,24,24h250c13.255,0,24-10.745,24-24V33
  86.     z M91,39h43v34H91V39z M61,259H30v-34h31V259z M61,73H30V39h31V73z M134,259H91v-34h43V259z M123,176.708v-55.417
  87.     c0-8.25,5.868-11.302,12.77-6.783l40.237,26.272c6.902,4.519,6.958,11.914,0.056,16.434l-40.321,26.277
  88.     C128.84,188.011,123,184.958,123,176.708z M207,259h-43v-34h43V259z M207,73h-43V39h43V73z M268,259h-31v-34h31V259z M268,73h-31V39
  89.     h31V73z"/>`.trim();
  90.  
  91.   const svgInfo = `<path d="M11.812,0C5.289,0,0,5.289,0,11.812s5.289,11.813,11.812,11.813s11.813-5.29,11.813-11.813
  92.     S18.335,0,11.812,0z M14.271,18.307c-0.608,0.24-1.092,0.422-1.455,0.548c-0.362,0.126-0.783,0.189-1.262,0.189
  93.     c-0.736,0-1.309-0.18-1.717-0.539s-0.611-0.814-0.611-1.367c0-0.215,0.015-0.435,0.045-0.659c0.031-0.224,0.08-0.476,0.147-0.759
  94.     l0.761-2.688c0.067-0.258,0.125-0.503,0.171-0.731c0.046-0.23,0.068-0.441,0.068-0.633c0-0.342-0.071-0.582-0.212-0.717
  95.     c-0.143-0.135-0.412-0.201-0.813-0.201c-0.196,0-0.398,0.029-0.605,0.09c-0.205,0.063-0.383,0.12-0.529,0.176l0.201-0.828
  96.     c0.498-0.203,0.975-0.377,1.43-0.521c0.455-0.146,0.885-0.218,1.29-0.218c0.731,0,1.295,0.178,1.692,0.53
  97.     c0.395,0.353,0.594,0.812,0.594,1.376c0,0.117-0.014,0.323-0.041,0.617c-0.027,0.295-0.078,0.564-0.152,0.811l-0.757,2.68
  98.     c-0.062,0.215-0.117,0.461-0.167,0.736c-0.049,0.275-0.073,0.485-0.073,0.626c0,0.356,0.079,0.599,0.239,0.728
  99.     c0.158,0.129,0.435,0.194,0.827,0.194c0.185,0,0.392-0.033,0.626-0.097c0.232-0.064,0.4-0.121,0.506-0.17L14.271,18.307z
  100.     M14.137,7.429c-0.353,0.328-0.778,0.492-1.275,0.492c-0.496,0-0.924-0.164-1.28-0.492c-0.354-0.328-0.533-0.727-0.533-1.193
  101.     c0-0.465,0.18-0.865,0.533-1.196c0.356-0.332,0.784-0.497,1.28-0.497c0.497,0,0.923,0.165,1.275,0.497
  102.     c0.353,0.331,0.53,0.731,0.53,1.196C14.667,6.703,14.49,7.101,14.137,7.429z"/>`.trim();
  103.  
  104.   const svgPlayList = `
  105.     <rect x="0" y="64" width="256" height="42.667"/>
  106.     <rect x="0" y="149.333" width="256" height="42.667"/>
  107.     <rect x="0" y="234.667" width="170.667" height="42.667"/>
  108.     <polygon points="341.333,234.667 341.333,149.333 298.667,149.333 298.667,234.667 213.333,234.667 213.333,277.333 
  109.     298.667,277.333 298.667,362.667 341.333,362.667 341.333,277.333 426.667,277.333 426.667,234.667"/>
  110.     `.trim();
  111.  
  112.   // --- Youtube Video Testing : 
  113.   // Square Video: https://www.youtube.com/watch?v=L0RXVnRbFg8 
  114.   // Square Video: https://www.youtube.com/watch?v=bK_rKhMIotU
  115.   // ---
  116.  
  117.  
  118.   const LAYOUT_TWO_COLUMNS = 1;
  119.   const LAYOUT_THEATER = 2;
  120.   const LAYOUT_FULLSCREEN = 4;
  121.   const LAYOUT_CHATROOM = 8;
  122.   const LAYOUT_CHATROOM_COLLASPED = 16;
  123.   const LAYOUT_TAB_EXPANDED = 32;
  124.   const LAYOUT_ENGAGEMENT_PANEL_EXPAND = 64;
  125.  
  126.   const mtoInterval1 = 40;
  127.   const mtoInterval2 = 150;
  128.  
  129.   let lastVideoURL = null; // for less attribute set only
  130.  
  131.  
  132.   const WeakRef = window.WeakRef;
  133.   const mWeakRef = WeakRef ? (o => o ? new WeakRef(o) : null) : (o => o || null);
  134.   const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
  135.  
  136.  
  137.  
  138.   const nonCryptoRandStr_base = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
  139.   function nonCryptoRandStr(n){
  140.     const result = new Array(n);
  141.     const baseStr = nonCryptoRandStr_base;
  142.     const bLen = baseStr.length;
  143.     for ( let i = 0; i < n; i++ ) {
  144.       let t = null
  145.       do {
  146.         t = baseStr.charAt(Math.floor(Math.random() * bLen));
  147.       }while(i===0 && 10-t>0)
  148.       result[i]=t;
  149.    }
  150.    return result.join('');
  151.   }
  152.  
  153.   class ObserverRegister{
  154.     static uidStore = {};
  155.     
  156.     /** @type {string} */
  157.     uid;
  158.  
  159.     /** @type {Function} */
  160.     observerCreator;
  161.  
  162.     /** @type {MutationObserver | IntersectionObserver} */
  163.     observer;    
  164.     
  165.     constructor(/** @type {Function} */ observerCreator){
  166.       let uid = null;
  167.       const uidStore = ObserverRegister.uidStore;
  168.       do{
  169.         uid = nonCryptoRandStr(5);
  170.       }while(uidStore[uid])
  171.       uidStore[uid] = true;
  172.       this.uid = uid;
  173.       this.observerCreator = observerCreator
  174.       this.observer = null;
  175.     }
  176.     bindElement(/** @type {HTMLElement} */ elm, ...args){
  177.       if(elm.hasAttribute(`o3r-${this.uid}`))return false;
  178.       elm.setAttribute(`o3r-${this.uid}`,'')
  179.       if(this.observer===null){
  180.         this.observer=this.observerCreator();
  181.       }
  182.       this.observer.observe(elm, ...args)
  183.       return true
  184.     }
  185.     clear(/** @type {boolean} */ flag){
  186.       if(this.observer !== null){
  187.         //const uidStore = ObserverRegister.uidStore;
  188.         if(flag === true){
  189.           this.observer.takeRecords();
  190.           this.observer.disconnect();
  191.         }
  192.         this.observer = null;
  193.         for(const s of document.querySelectorAll(`[o3r-${this.uid}]`)) s.removeAttribute(`o3r-${this.uid}`)
  194.         //uidStore[this.uid]=false;
  195.         //this.uid = null;
  196.       }
  197.     }
  198.   }
  199.  
  200.   const mtoMutation_watchFlexy = new ObserverRegister(()=>{
  201.     return new MutationObserver(FP.mtoNavF)
  202.   });
  203.   const sa_wflexy = mtoMutation_watchFlexy.uid;
  204.  
  205.   const mtoMutation_body = new ObserverRegister(()=>{
  206.     return new MutationObserver(FP.mtoBodyF)
  207.   });
  208.   const sa_body = mtoMutation_body.uid;
  209.  
  210.   const mtoFlexyAttr = new ObserverRegister(()=>{
  211.     return new MutationObserver(mtf_attrFlexy)
  212.   });
  213.   const sa_flexyAttr = mtoFlexyAttr.uid;
  214.  
  215.   const mtoVisibility_EngagementPanel = new ObserverRegister(()=>{
  216.     return new MutationObserver(FP.mtf_attrEngagementPanel)
  217.   });
  218.   const sa_epanel = mtoVisibility_EngagementPanel.uid;
  219.  
  220.   const mtoVisibility_Playlist = new ObserverRegister(()=>{
  221.     return new AttributeMutationObserver({
  222.       "hidden": FP.mtf_attrPlaylist
  223.     })
  224.   })
  225.   const sa_playlist = mtoVisibility_Playlist.uid;
  226.  
  227.   const mtoVisibility_Comments = new ObserverRegister(()=>{
  228.     return new AttributeMutationObserver({
  229.       "hidden": FP.mtf_attrComments
  230.     })
  231.   })
  232.   const sa_comments = mtoVisibility_Comments.uid;
  233.  
  234.  
  235.   const mtoVisibility_Chatroom = new ObserverRegister(()=>{
  236.     return new AttributeMutationObserver({
  237.       "collapsed": FP.mtf_attrChatroom
  238.     })
  239.   })
  240.   const sa_chatroom = mtoVisibility_Chatroom.uid;
  241.  
  242.  
  243.  
  244.  
  245.  
  246.   function tracer(key, cmp) {
  247.     if (cmp > 0) return tracer[key] === cmp;
  248.     return (tracer[key] = Date.now());
  249.   }
  250.  
  251.   function racer(key, f) {
  252.     let now = Date.now();
  253.     const kTime = `${key}$$1`
  254.     let t = racer[kTime] || 0;
  255.  
  256.     if (now < t) {
  257.       const kCount = `${key}$$2`;
  258.       racer[kCount] = (racer[kCount] || 0) + 1;
  259.       if (racer[kCount] === 1) {
  260.         let g = f;
  261.         requestAnimationFrame(() => {
  262.           racer[kCount] = 0;
  263.           g();
  264.           g = null;
  265.         })
  266.       }
  267.     } else {
  268.       racer[kTime] = now + 16;
  269.       f();
  270.     }
  271.   }
  272.  
  273.   class ScriptEF {
  274.     constructor() {
  275.       this._id = scriptEC;
  276.     }
  277.     isValid() {
  278.       return this._id === scriptEC;
  279.     }
  280.   }
  281.  
  282.   class Timeout {
  283.  
  284.     set(f, d, repeatCount) {
  285.       if (this.cid > 0) return;
  286.       let sEF = new ScriptEF();
  287.       if (repeatCount > 0) {
  288.  
  289.         let rc = repeatCount;
  290.         const g = () => {
  291.           this.cid = 0;
  292.           if (!sEF.isValid()) return;
  293.           let res = f();
  294.           if (--rc <= 0) return;
  295.           if (res === true) this.cid = timeline.setTimeout(g, d);
  296.         }
  297.         g();
  298.  
  299.       } else {
  300.  
  301.         const g = () => {
  302.           this.cid = 0;
  303.           if (!sEF.isValid()) return;
  304.           if (f() === true) this.cid = timeline.setTimeout(g, d);
  305.         }
  306.         this.cid = timeline.setTimeout(g, d);
  307.       }
  308.     }
  309.  
  310.     clear() {
  311.       if (this.cid > 0) timeline.clearTimeout(this.cid);
  312.     }
  313.  
  314.     isEmpty() {
  315.       return !this.cid
  316.     }
  317.  
  318.  
  319.   }
  320.  
  321.   class Mutex {
  322.  
  323.     constructor() {
  324.       this.p = Promise.resolve()
  325.     }
  326.  
  327.     lockWith(f) {
  328.  
  329.       this.p = this.p.then(() => {
  330.         return new Promise(f)
  331.       }).catch(console.warn)
  332.     }
  333.  
  334.   }
  335.  
  336.  
  337.  
  338.   function prettyElm(elm) {
  339.     if (!elm || !elm.nodeName) return null;
  340.     const eId = elm.id || null;
  341.     const eClsName = elm.className || null;
  342.     return [elm.nodeName.toLowerCase(), typeof eId == 'string' ? "#" + eId : '', typeof eClsName == 'string' ? '.' + eClsName.replace(/\s+/g, '.') : ''].join('').trim();
  343.   }
  344.  
  345.   function extractTextContent(elm) {
  346.     return elm.textContent.replace(/\s+/g, '').replace(/[^\da-zA-Z\u4E00-\u9FFF\u00C0-\u00FF\u00C0-\u02AF\u1E00-\u1EFF\u0590-\u05FF\u0400-\u052F\u0E00-\u0E7F\u0600-\u06FF\u0750-\u077F\u1100-\u11FF\u3130-\u318F\uAC00-\uD7AF\u3040-\u30FF\u31F0-\u31FF]/g, '')
  347.   }
  348.  
  349.   function addScript(scriptText) {
  350.     const scriptNode = document.createElement('script');
  351.     scriptNode.type = 'text/javascript';
  352.     scriptNode.textContent = scriptText;
  353.     try {
  354.       document.documentElement.appendChild(scriptNode);
  355.     } catch (e) {
  356.       console.log('addScript Error', e)
  357.     }
  358.     return scriptNode;
  359.   }
  360.  
  361.   function addScriptByURL(scriptURL) {
  362.     const scriptNode = document.createElement('script');
  363.     scriptNode.type = 'text/javascript';
  364.     scriptNode.src = scriptURL;
  365.     try {
  366.       document.documentElement.appendChild(scriptNode);
  367.     } catch (e) {
  368.       console.log('addScriptByURL Error', e)
  369.     }
  370.     return scriptNode;
  371.   }
  372.  
  373.   function addStyle(styleText, container) {
  374.     const styleNode = document.createElement('style');
  375.     //styleNode.type = 'text/css';
  376.     styleNode.textContent = styleText;
  377.     (container || document.documentElement).appendChild(styleNode);
  378.     return styleNode;
  379.   }
  380.  
  381.  
  382.   const stopIframePropagation = function(evt){
  383.     if(scriptEnable && evt && evt.target && evt.target.nodeName=='IFRAME'){
  384.       evt.stopImmediatePropagation();
  385.       evt.stopPropagation();
  386.     }
  387.   }
  388.   document.addEventListener('mouseover', stopIframePropagation, true)
  389.   document.addEventListener('mouseout', stopIframePropagation, true)
  390.   document.addEventListener('mousedown', stopIframePropagation, true)
  391.   document.addEventListener('mouseup', stopIframePropagation, true)
  392.   document.addEventListener('keydown', stopIframePropagation, true)
  393.   document.addEventListener('keyup', stopIframePropagation, true)
  394.   document.addEventListener('mouseenter', stopIframePropagation, true)
  395.   document.addEventListener('mouseleave', stopIframePropagation, true)
  396.  
  397.  
  398.  
  399.   function isDOMVisible(elem) {
  400.     // jQuery version : https://github.com/jquery/jquery/blob/a684e6ba836f7c553968d7d026ed7941e1a612d8/src/css/hiddenVisibleSelectors.js
  401.     return !!(elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length);
  402.   }
  403.  
  404.   function isNonEmptyString(s) {
  405.     return typeof s == 'string' && s.length > 0;
  406.   }
  407.  
  408.  
  409.   async function nativeFunc(dom, property, args) {
  410.     dom.dispatchEvent(new CustomEvent("userscript-call-dom-func", { detail: { property, args } }))
  411.   }
  412.  
  413.   /*
  414.   async function nativeValue(dom, property, args) {
  415.     dom.dispatchEvent(new CustomEvent("userscript-call-dom-value", { detail: { property, args } }))
  416.   }
  417.   */
  418.   async function nativeFuncStacked(selector, property, args){
  419.     document.dispatchEvent(new CustomEvent("userscript-call-dom-func-stacked", { detail: { selector, property, args } }))
  420.   }
  421.   /*
  422.   async function nativeValueStacked(selector, property, args){
  423.     document.dispatchEvent(new CustomEvent("userscript-call-dom-value-stacked", { detail: { selector, property, args } }))
  424.   }
  425.   async function nativeConstStacked(selector, property, args){
  426.     document.dispatchEvent(new CustomEvent("userscript-call-dom-const-stacked", { detail: { selector, property, args } }))
  427.   }
  428.   */
  429.  
  430.  
  431.   function akAttr(cssElm, attrName, isNegative, flag) {
  432.     // isNegative => incomplete loading
  433.  
  434.     let u = parseInt(cssElm.getAttribute(attrName) || 0) || 0;
  435.     let ak = Math.abs(u);
  436.  
  437.     if (ak > 100 && isNegative && u < 0) {
  438.  
  439.     } else if (ak > 100 && !isNegative && u > 0) {
  440.  
  441.     } else {
  442.       if (ak <= 100) {
  443.         ak = 101;
  444.       } else {
  445.         ak++;
  446.         if (ak >= 800) ak = 101;
  447.       }
  448.       // 101, 102, ... 799, 101 
  449.     }
  450.  
  451.     cssElm.setAttribute(attrName, `${ isNegative ? -ak : ak }${ flag || '' }`)
  452.   }
  453.  
  454.  
  455.  
  456.   let timeout_resize_for_layout_change = new Timeout();
  457.  
  458.   function dispatchWindowResize(){
  459.     // for youtube to detect layout resize for adjusting Player tools
  460.     return window.dispatchEvent(new Event('resize'));
  461.   }
  462.  
  463.  
  464.  
  465.   function layoutStatusChanged(old_layoutStatus, new_layoutStatus) {
  466.  
  467.  
  468.     if (old_layoutStatus === new_layoutStatus) return;
  469.  
  470.     const cssElm = kRef(ytdFlexy);
  471.  
  472.     if (!cssElm) return;
  473.  
  474.  
  475.     const new_isExpandedChat = !(new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  476.     const new_isCollaspedChat = (new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  477.  
  478.     const new_isTwoColumns = new_layoutStatus & LAYOUT_TWO_COLUMNS;
  479.     const new_isTheater = new_layoutStatus & LAYOUT_THEATER;
  480.     const new_isTabExpanded = new_layoutStatus & LAYOUT_TAB_EXPANDED;
  481.     const new_isFullScreen = new_layoutStatus & LAYOUT_FULLSCREEN;
  482.     const new_isExpandEPanel = new_layoutStatus & LAYOUT_ENGAGEMENT_PANEL_EXPAND;
  483.  
  484.  
  485.     function showTabOrChat() {
  486.  
  487.       layoutStatusMutex.lockWith(unlock => {
  488.  
  489.         if (lastShowTab == '#chatroom') {
  490.  
  491.           if (new_isTabExpanded) switchTabActivity(null)
  492.           if (!new_isExpandedChat) ytBtnExpandChat();
  493.  
  494.         } else if (lastShowTab && lastShowTab.indexOf('#engagement-panel-') == 0) {
  495.  
  496.           if (new_isTabExpanded) switchTabActivity(null)
  497.           if (!new_isExpandEPanel) ytBtnOpenEngagementPanel(lastShowTab);
  498.  
  499.         } else {
  500.  
  501.           if (new_isExpandedChat) ytBtnCollapseChat()
  502.           if (!new_isTabExpanded) {setToActiveTab();}
  503.  
  504.         }
  505.  
  506.         timeline.setTimeout(unlock, 40);
  507.  
  508.       })
  509.     }
  510.  
  511.     function hideTabAndChat() {
  512.  
  513.       layoutStatusMutex.lockWith(unlock => {
  514.  
  515.         if (new_isTabExpanded) switchTabActivity(null)
  516.         if (new_isExpandedChat) ytBtnCollapseChat()
  517.         if (new_isExpandEPanel) ytBtnCloseEngagementPanels();
  518.  
  519.  
  520.         timeline.setTimeout(unlock, 40);
  521.  
  522.       })
  523.  
  524.     }
  525.  
  526.  
  527.     if (new_isExpandedChat || new_isTabExpanded || new_isExpandEPanel) {
  528.       if (statusCollasped !== 1) statusCollasped = 1;
  529.     } else {
  530.       if (statusCollasped === 1) statusCollasped = 2;
  531.     }
  532.  
  533.     let changes = 0;
  534.  
  535.     if (old_layoutStatus !== null) changes = old_layoutStatus ^ new_layoutStatus;
  536.  
  537.     let chat_collasped_changed = !!(changes & LAYOUT_CHATROOM_COLLASPED)
  538.     let tab_expanded_changed = !!(changes & LAYOUT_TAB_EXPANDED)
  539.     let theater_mode_changed = !!(changes & LAYOUT_THEATER)
  540.     let column_mode_changed = !!(changes & LAYOUT_TWO_COLUMNS)
  541.     let fullscreen_mode_changed = !!(changes & LAYOUT_FULLSCREEN)
  542.     let epanel_expanded_changed = !!(changes & LAYOUT_ENGAGEMENT_PANEL_EXPAND)
  543.  
  544.     let tab_change = (tab_expanded_changed ? 1 : 0) | (chat_collasped_changed ? 2 : 0) | (epanel_expanded_changed ? 4 : 0);
  545.  
  546.     let isChatOrTabExpandTriggering = tab_change == 0 ? false : (
  547.       (tab_expanded_changed && new_isTabExpanded) ||
  548.       (chat_collasped_changed && new_isExpandedChat) ||
  549.       (epanel_expanded_changed && new_isExpandEPanel)
  550.     );
  551.  
  552.     let isChatOrTabCollaspeTriggering = tab_change == 0 ? false : (
  553.       (tab_expanded_changed && !new_isTabExpanded) ||
  554.       (chat_collasped_changed && new_isCollaspedChat) ||
  555.       (epanel_expanded_changed && !new_isExpandEPanel)
  556.     );
  557.  
  558.  
  559.  
  560.     let moreThanOneShown = (new_isTabExpanded + new_isExpandedChat + new_isExpandEPanel) > 1
  561.  
  562.     let requestVideoResize = false;
  563.  
  564.     if (fullscreen_mode_changed || new_isFullScreen) {
  565.  
  566.     } else if (tab_change == 0 && column_mode_changed && new_isTwoColumns && !new_isTheater && statusCollasped === 1 && moreThanOneShown) {
  567.  
  568.       showTabOrChat();
  569.       requestVideoResize = true;
  570.  
  571.     } else if (tab_change == 2 && new_isExpandedChat && new_isTwoColumns && !new_isTheater && statusCollasped === 1 && new_isTabExpanded && !column_mode_changed) {
  572.  
  573.       switchTabActivity(null);
  574.       requestVideoResize = true;
  575.  
  576.     } else if (isChatOrTabExpandTriggering && new_isTwoColumns && new_isTheater && statusCollasped === 1 && !theater_mode_changed && !column_mode_changed) {
  577.  
  578.       ytBtnCancelTheater();
  579.       requestVideoResize = true;
  580.  
  581.     } else if (new_isTwoColumns && new_isTheater && statusCollasped === 1) {
  582.  
  583.       hideTabAndChat();
  584.       requestVideoResize = true;
  585.  
  586.     } else if (isChatOrTabCollaspeTriggering && new_isTwoColumns && !new_isTheater && statusCollasped === 2 && !column_mode_changed) {
  587.  
  588.       ytBtnSetTheater();
  589.       requestVideoResize = true;
  590.  
  591.     } else if (tab_change == 0 && (column_mode_changed || theater_mode_changed) && new_isTwoColumns && !new_isTheater && statusCollasped !== 1) {
  592.  
  593.       showTabOrChat();
  594.       requestVideoResize = true;
  595.  
  596.     } else if (!new_isFullScreen && new_isTwoColumns && !new_isTheater && !new_isTabExpanded &&
  597.       (new_isCollaspedChat || !new_isExpandedChat) &&
  598.       !new_isExpandEPanel
  599.     ) {
  600.       // bug fix for restoring from mini player
  601.  
  602.       layoutStatusMutex.lockWith(unlock => {
  603.  
  604.         if (new_isExpandedChat) ytBtnCollapseChat()
  605.         setToActiveTab();
  606.  
  607.         timeline.setTimeout(unlock, 40);
  608.  
  609.       })
  610.  
  611.       requestVideoResize = true;
  612.  
  613.     } else if (tab_expanded_changed) {
  614.  
  615.       requestVideoResize = true;
  616.  
  617.     }
  618.  
  619.  
  620.     if (column_mode_changed && !chat_collasped_changed && new_isExpandedChat) {
  621.  
  622.       runAfterExpandChat();
  623.  
  624.     }
  625.  
  626.  
  627.  
  628.     if (requestVideoResize) {
  629.  
  630.       timeout_resize_for_layout_change.clear();
  631.       timeout_resize_for_layout_change.set(() => {
  632.         dispatchWindowResize();
  633.       }, 92)
  634.  
  635.     } else if (timeout_resize_for_layout_change.isEmpty() && (Date.now()) - lastResizeAt > 600) {
  636.       timeout_resize_for_layout_change.set(() => {
  637.         if ((Date.now()) - lastResizeAt > 600) dispatchWindowResize();
  638.       }, 62)
  639.     }
  640.  
  641.  
  642.  
  643.  
  644.   }
  645.  
  646.  
  647.   const $ws = {
  648.     _layoutStatus: null,
  649.     layoutStatus_pending: false
  650.   }
  651.  
  652.   let wls = new class {
  653.     get layoutStatus() {
  654.       return this._layoutStatus;
  655.     }
  656.     set layoutStatus(nv) {
  657.  
  658.       if (nv === null) {
  659.         this._layoutStatus = null;
  660.         statusCollasped = 0;
  661.         return;
  662.       }
  663.       if (nv === this._layoutStatus) return;
  664.  
  665.       if (!this.layoutStatus_pending) {
  666.         this.layoutStatus_pending = true;
  667.         const old_layoutStatus = this._layoutStatus;
  668.  
  669.         layoutStatusMutex.lockWith(unlock => {
  670.  
  671.           this.layoutStatus_pending = false;
  672.           const new_layoutStatus = this._layoutStatus;
  673.           layoutStatusChanged(old_layoutStatus, new_layoutStatus);
  674.  
  675.           timeline.setTimeout(unlock, 40)
  676.  
  677.  
  678.         })
  679.       }
  680.  
  681.       this._layoutStatus = nv;
  682.     }
  683.   };
  684.  
  685.  
  686.  
  687.  
  688.   const svgElm = (w, h, vw, vh, p) => `<svg width="${w}" height="${h}" viewBox="0 0 ${vw} ${vh}" preserveAspectRatio="xMidYMid meet">${p}</svg>`
  689.  
  690.   let settings = {
  691.     defaultTab: "#tab-videos"
  692.   };
  693.  
  694.  
  695.   let mtoInterval = mtoInterval1;
  696.  
  697.   function isVideoPlaying(video) {
  698.     return video.currentTime > 0 && !video.paused && !video.ended && video.readyState > video.HAVE_CURRENT_DATA;
  699.   }
  700.  
  701.   function wAttr(elm, attr, kv) {
  702.     if (!elm || kv === null) {} else if (kv === true) { elm.setAttribute(attr, '') } else if (kv === false) { elm.removeAttribute(attr) } else if (typeof kv == 'string') { elm.setAttribute(attr, kv) }
  703.   }
  704.  
  705.   function hideTabBtn(tabBtn) {
  706.     let isActiveBefore = tabBtn.classList.contains('active');
  707.     tabBtn.classList.add("tab-btn-hidden");
  708.     if (isActiveBefore) {
  709.       setToActiveTab();
  710.     }
  711.   }
  712.  
  713.   function hasAttribute(obj, key) {
  714.     return obj && obj.hasAttribute(key);
  715.   }
  716.  
  717.   function isTheater() {
  718.     const cssElm = kRef(ytdFlexy);
  719.     return (cssElm && cssElm.hasAttribute('theater'))
  720.   }
  721.  
  722.   function isFullScreen() {
  723.     const cssElm = kRef(ytdFlexy);
  724.     return (cssElm && cssElm.hasAttribute('fullscreen'))
  725.   }
  726.  
  727.   function isChatExpand() {
  728.     const cssElm = kRef(ytdFlexy);
  729.     return cssElm && cssElm.hasAttribute('userscript-chatblock') && !cssElm.hasAttribute('userscript-chat-collapsed')
  730.   }
  731.  
  732.   function isWideScreenWithTwoColumns() {
  733.     const cssElm = kRef(ytdFlexy);
  734.     return (cssElm && cssElm.hasAttribute('is-two-columns_'))
  735.   }
  736.  
  737.   function isAnyActiveTab() {
  738.     return $('#right-tabs .tab-btn.active').length > 0
  739.   }
  740.  
  741.   function isEngagementPanelExpanded() { //note: not checking the visual elements
  742.     const cssElm = kRef(ytdFlexy);
  743.     return (cssElm && +cssElm.getAttribute('userscript-engagement-panel') > 0)
  744.   }
  745.  
  746.   function engagement_panels_() {
  747.  
  748.     let res = [];
  749.     let shownRes = [];
  750.  
  751.     let v = 0,
  752.       k = 1,
  753.       count = 0;
  754.       
  755.     for (const ePanel of document.querySelectorAll(
  756.       `ytd-watch-flexy ytd-engagement-panel-section-list-renderer[o3r-${sa_epanel}]`
  757.       )) {
  758.  
  759.       let visibility = ePanel.getAttribute('visibility') //ENGAGEMENT_PANEL_VISIBILITY_EXPANDED //ENGAGEMENT_PANEL_VISIBILITY_HIDDEN
  760.  
  761.       switch (visibility) {
  762.         case 'ENGAGEMENT_PANEL_VISIBILITY_EXPANDED':
  763.           v |= k;
  764.           count++;
  765.           shownRes.push(ePanel)
  766.           res.push({ ePanel, k, visible: true });
  767.           break;
  768.         case 'ENGAGEMENT_PANEL_VISIBILITY_HIDDEN':
  769.           res.push({ ePanel, k, visible: false });
  770.           break;
  771.         default:
  772.           res.push({ ePanel, k, visible: false });
  773.       }
  774.  
  775.       k = k << 1;
  776.  
  777.     }
  778.     return { list: res, value: v, count: count, shownRes };
  779.   }
  780.  
  781.  
  782.   function ytBtnOpenEngagementPanel(panel_id) {
  783.  
  784.     if (typeof panel_id == 'string') {
  785.       panel_id = panel_id.replace('#engagement-panel-', '');
  786.       panel_id = parseInt(panel_id);
  787.     }
  788.     if (panel_id >= 0) {} else return false;
  789.  
  790.     let panels = engagement_panels_();
  791.  
  792.     for (const { ePanel, k, visible } of panels.list) {
  793.       if ((panel_id & k) === k) {
  794.         if (!visible) ePanel.setAttribute('visibility', "ENGAGEMENT_PANEL_VISIBILITY_EXPANDED");
  795.       } else {
  796.         if (visible) ytBtnCloseEngagementPanel(ePanel);
  797.       }
  798.     }
  799.  
  800.   }
  801.  
  802.   function ytBtnCloseEngagementPanel(s) {
  803.     //ePanel.setAttribute('visibility',"ENGAGEMENT_PANEL_VISIBILITY_HIDDEN");
  804.     let btn = s.querySelector('ytd-watch-flexy ytd-engagement-panel-title-header-renderer #header>#visibility-button>ytd-button-renderer');
  805.     if (btn) {
  806.       btn.click();
  807.     }
  808.   }
  809.  
  810.   function ytBtnCloseEngagementPanels() {
  811.     if (isEngagementPanelExpanded()) {
  812.       for (const s of document.querySelectorAll(
  813.         `ytd-watch-flexy ytd-engagement-panel-section-list-renderer[o3r-${sa_epanel}]`
  814.         )) {
  815.         if (s.getAttribute('visibility') == "ENGAGEMENT_PANEL_VISIBILITY_EXPANDED") ytBtnCloseEngagementPanel(s);
  816.       }
  817.     }
  818.   }
  819.  
  820.   function ytBtnSetTheater() {
  821.     if (!isTheater()) {
  822.       const sizeBtn = document.querySelector('ytd-watch-flexy #ytd-player button.ytp-size-button')
  823.       if (sizeBtn) sizeBtn.click();
  824.     }
  825.   }
  826.  
  827.   function ytBtnCancelTheater() {
  828.     if (isTheater()) {
  829.       const sizeBtn = document.querySelector('ytd-watch-flexy #ytd-player button.ytp-size-button')
  830.       if (sizeBtn) sizeBtn.click();
  831.     }
  832.   }
  833.  
  834.   function ytBtnExpandChat() {
  835.     let button = document.querySelector('ytd-live-chat-frame#chat[collapsed]>.ytd-live-chat-frame#show-hide-button')
  836.     if (button) button.querySelector('ytd-toggle-button-renderer').click();
  837.   }
  838.  
  839.   function ytBtnCollapseChat() {
  840.     let button = document.querySelector('ytd-live-chat-frame#chat:not([collapsed])>.ytd-live-chat-frame#show-hide-button')
  841.     if (button) button.querySelector('ytd-toggle-button-renderer').click();
  842.   }
  843.  
  844. /*
  845.   function hackImgShadow(imgShadow) {
  846.     // add to #columns and add back after loaded
  847.     let img = imgShadow.querySelector('img')
  848.     if (!img) return;
  849.  
  850.     let p = imgShadow.parentNode
  851.     let z = $(imgShadow).clone()[0]; //to occupy the space
  852.     p.replaceChild(z, imgShadow)
  853.     $(imgShadow).prependTo('#columns'); // refer to css hack
  854.  
  855.     function onload(evt) {
  856.       if (evt) this.removeEventListener('load', onload, false)
  857.       p.replaceChild(imgShadow, z)
  858.       p = null;
  859.       z = null;
  860.       imgShadow = null;
  861.     }
  862.  
  863.     if (img.complete) onload();
  864.     else img.addEventListener('load', onload, false)
  865.   }
  866.   */
  867.  
  868.  
  869.   const Q = {}
  870.   const FOnce = {}
  871.  
  872.   const $callOnce = function(key) {
  873.     if (FOnce[key] && FOnce[key]() === false) FOnce[key] = null
  874.   }
  875.   const $callOnceAsync = async function(key) {
  876.     if (FOnce[key] && FOnce[key]() === false) FOnce[key] = null
  877.   }
  878.  
  879.  
  880.  
  881.   function chatFrameContentDocument() {
  882.     // non-null if iframe exist && contentDocument && readyState = complete
  883.  
  884.     let iframe = document.querySelector('ytd-live-chat-frame iframe#chatframe');
  885.     if (!iframe) return null; //iframe must be there
  886.     let cDoc = null;
  887.     try {
  888.       cDoc = iframe.contentDocument;
  889.     } catch (e) {}
  890.     if (!cDoc) return null;
  891.     if (cDoc.readyState != 'complete') return null; //we must wait for its completion
  892.  
  893.     return cDoc;
  894.  
  895.   }
  896.  
  897.   function chatFrameElement(cssSelector) {
  898.     let cDoc = chatFrameContentDocument();
  899.     if (!cDoc) return null;
  900.     let elm = null;
  901.     try {
  902.       elm = cDoc.querySelector(cssSelector)
  903.     } catch (e) {
  904.       console.log('iframe error', e)
  905.     }
  906.     return elm;
  907.   }
  908.  
  909.  
  910.  
  911.  
  912.   function fixTabs() {
  913.  
  914.  
  915.     if (!scriptEnable) return;
  916.  
  917.  
  918.     let queryElement = document.querySelector('*:not(#tab-videos)>#related:not([non-placeholder-videos]) > ytd-watch-next-secondary-results-renderer')
  919.  
  920.     let isRelocated = !!queryElement;
  921.  
  922.  
  923.  
  924.     if (isRelocated) {
  925.  
  926.       let relocatedRelated = queryElement.parentNode; // NOT NULL
  927.  
  928.       let right_tabs = document.querySelector('#right-tabs');
  929.       let tab_videos = right_tabs.querySelector("#tab-videos");
  930.  
  931.       if (!right_tabs || !tab_videos) return;
  932.  
  933.       for (const s of relocatedRelated.querySelectorAll('#related')) {
  934.         s.setAttribute('non-placeholder-videos', '')
  935.       }
  936.  
  937.       let target_container = document.querySelector('ytd-watch-flexy:not([is-two-columns_]) #primary-inner, ytd-watch-flexy[is-two-columns_] #secondary-inner')
  938.  
  939.       if (target_container) target_container.append(right_tabs) // last-child
  940.  
  941.  
  942.       let videos_related = relocatedRelated; // NOT NULL
  943.       $('[placeholder-videos]').removeAttr('placeholder-videos');
  944.       $('[placeholder-for-youtube-play-next-queue]').removeAttr('placeholder-for-youtube-play-next-queue');
  945.  
  946.       tab_videos.appendChild(videos_related);
  947.       let videos_results_renderer = relocatedRelated.querySelector("ytd-watch-next-secondary-results-renderer");
  948.       if (videos_results_renderer) videos_results_renderer.setAttribute('data-dom-changed-by-tabview-youtube', scriptVersionForExternal);
  949.       videos_related.setAttribute('placeholder-for-youtube-play-next-queue', '')
  950.       videos_related.setAttribute('placeholder-videos', '')
  951.  
  952.       $('[placeholder-videos]').on("scroll", makeBodyScrollByEvt);
  953.  
  954.  
  955.  
  956.  
  957.     }
  958.  
  959.  
  960.  
  961.  
  962.     let chatroom = null;
  963.     if (chatroom = document.querySelector('*:not([data-positioner="before|#chat"]) + ytd-live-chat-frame#chat, ytd-live-chat-frame#chat:first-child')) {
  964.  
  965.       let positioner = document.querySelector('tabview-youtube-positioner[data-positioner="before|#chat"]');
  966.       if (positioner) positioner.remove();
  967.  
  968.  
  969.       if (document.querySelector('.YouTubeLiveFilledUpView')) {
  970.         // no relocation
  971.       } else {
  972.  
  973.         $(chatroom).insertBefore('#right-tabs')
  974.  
  975.       }
  976.  
  977.  
  978.       $(positioner ? positioner : document.createElement('tabview-youtube-positioner')).attr('data-positioner', 'before|#chat').insertBefore(chatroom)
  979.  
  980.  
  981.  
  982.     }
  983.  
  984.  
  985.   }
  986.  
  987.   const injectionScript_fixAutoComplete = function() {
  988.  
  989.     // https://cdnjs.cloudflare.com/ajax/libs/JavaScript-autoComplete/1.0.4/auto-complete.min.js
  990.  
  991.     for (const s of document.querySelectorAll('[autocomplete="off"]:not([data-autocomplete-results-id])')) {
  992.  
  993.  
  994.       let sc = s.sc;
  995.       if (sc instanceof HTMLElement) {
  996.  
  997.         let id = Date.now();
  998.         s.setAttribute('data-autocomplete-results-id', id);
  999.         sc.setAttribute('data-autocomplete-input-id', id);
  1000.  
  1001.         if (window.WeakRef) {
  1002.           s._sc = new WeakRef(sc);
  1003.           s.sc = null;
  1004.           delete s.sc;
  1005.           Object.defineProperty(s, 'sc', {
  1006.             get: function() { return s._sc.deref() || null; },
  1007.             enumerable: true,
  1008.             configurable: true
  1009.           })
  1010.         }
  1011.  
  1012.         if (sc.hasAttribute('autocomplete-disable-updatesc') && typeof s.updateSC == 'function') {
  1013.  
  1014.           window.removeEventListener('resize', s.updateSC);
  1015.           s.updateSC = function() {};
  1016.  
  1017.         }
  1018.  
  1019.         sc.dispatchEvent(new CustomEvent('autocomplete-sc-exist'));
  1020.  
  1021.  
  1022.       }
  1023.  
  1024.     }
  1025.  
  1026.   };
  1027.  
  1028.  
  1029.   function handlerAutoCompleteExist() {
  1030.  
  1031.  
  1032.     let autoComplete = this;
  1033.  
  1034.     autoComplete.removeEventListener('autocomplete-sc-exist', handlerAutoCompleteExist, false)
  1035.  
  1036.     let domId = autoComplete.getAttribute('data-autocomplete-input-id')
  1037.     let searchBox = autoComplete.ownerDocument.querySelector(`[data-autocomplete-results-id="${domId}"]`)
  1038.  
  1039.     if (!domId || !searchBox) return;
  1040.  
  1041.     let positioner = searchBox.nextSibling;
  1042.     if (positioner && positioner.nodeName.toLowerCase() == "autocomplete-positioner") {} else if (positioner && positioner.nodeName.toLowerCase() != "autocomplete-positioner") {
  1043.       $(positioner = document.createElement("autocomplete-positioner")).insertAfter(searchBox);
  1044.     } else {
  1045.       $(positioner = document.createElement("autocomplete-positioner")).prependTo(searchBox.parentNode);
  1046.     }
  1047.     $(autoComplete).prependTo(positioner);
  1048.  
  1049.     positioner.style.setProperty('--sb-margin-bottom', getComputedStyle(searchBox).marginBottom)
  1050.     positioner.style.setProperty('--height', searchBox.offsetHeight + 'px')
  1051.  
  1052.   }
  1053.  
  1054.   function mtf_fixAutoCompletePosition(elmAutoComplete) {
  1055.  
  1056.     elmAutoComplete.setAttribute('autocomplete-disable-updatesc', '')
  1057.     elmAutoComplete.addEventListener('autocomplete-sc-exist', handlerAutoCompleteExist, false)
  1058.  
  1059.     if (isMyScriptInChromeRuntime()){
  1060.       addScriptByURL(window.chrome.runtime.getURL('js/injectionScript_fixAutoComplete.js'));
  1061.     } else {
  1062.       let injection_script = GM_getResourceText("injectionFixAutoComplete")
  1063.       addScript(`${injection_script}`);
  1064.     }
  1065.  
  1066.   }
  1067.  
  1068.   function mtf_AfterFixTabs() {
  1069.  
  1070.  
  1071.     let ytdFlexyElm = kRef(ytdFlexy);
  1072.     if (!scriptEnable || !ytdFlexyElm) return;
  1073.  
  1074.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1075.  
  1076.  
  1077.  
  1078.     const autocomplete = rootElement.querySelector('[placeholder-for-youtube-play-next-queue] input#suggestions-search + autocomplete-positioner > .autocomplete-suggestions[data-autocomplete-input-id]:not([position-fixed-by-tabview-youtube])')
  1079.  
  1080.     if (autocomplete) {
  1081.  
  1082.       const searchBox = document.querySelector('[placeholder-for-youtube-play-next-queue] input#suggestions-search')
  1083.  
  1084.  
  1085.       if (searchBox) {
  1086.  
  1087.  
  1088.         autocomplete.parentNode.setAttribute('position-fixed-by-tabview-youtube', '');
  1089.         autocomplete.setAttribute('position-fixed-by-tabview-youtube', '');
  1090.         autocomplete.setAttribute('userscript-scrollbar-render', '')
  1091.  
  1092.         if (!searchBox.hasAttribute('is-set-click-to-toggle')) {
  1093.           searchBox.setAttribute('is-set-click-to-toggle', '')
  1094.           searchBox.addEventListener('click', function() {
  1095.  
  1096.  
  1097.             setTimeout(() => {
  1098.               const autocomplete = document.querySelector(`.autocomplete-suggestions[data-autocomplete-input-id="${ this.getAttribute('data-autocomplete-results-id') }"]`)
  1099.  
  1100.               if (!autocomplete) return;
  1101.  
  1102.               const isNotEmpty = (autocomplete.textContent || '').length > 0 && (this.value || '').length > 0;
  1103.  
  1104.               if (isNotEmpty) {
  1105.  
  1106.                 let elmVisible = isDOMVisible(autocomplete)
  1107.  
  1108.                 if (elmVisible) $(autocomplete).hide();
  1109.                 else $(autocomplete).show();
  1110.  
  1111.               }
  1112.  
  1113.             }, 20);
  1114.  
  1115.           })
  1116.  
  1117.           let timeoutOnce_searchbox_keyup = new Timeout();
  1118.           searchBox.addEventListener('keyup', function() {
  1119.  
  1120.             timeoutOnce_searchbox_keyup.set(() => {
  1121.  
  1122.               const autocomplete = document.querySelector(`.autocomplete-suggestions[data-autocomplete-input-id="${ this.getAttribute('data-autocomplete-results-id') }"]`)
  1123.  
  1124.               if (!autocomplete) return;
  1125.  
  1126.  
  1127.               const isNotEmpty = (autocomplete.textContent || '').length > 0 && (this.value || '').length > 0
  1128.  
  1129.               if (isNotEmpty) {
  1130.  
  1131.                 let elmVisible = isDOMVisible(autocomplete)
  1132.  
  1133.                 if (!elmVisible) $(autocomplete).show();
  1134.  
  1135.               }
  1136.  
  1137.             }, 20);
  1138.  
  1139.           })
  1140.  
  1141.         }
  1142.  
  1143.  
  1144.  
  1145.       }
  1146.  
  1147.     }
  1148.  
  1149.  
  1150.  
  1151.  
  1152.     let currentLastVideo = rootElement.querySelector('[placeholder-videos] #items ytd-compact-video-renderer:last-of-type')
  1153.     let prevLastVideo = kRef(_cachedLastVideo);
  1154.  
  1155.     if (prevLastVideo !== currentLastVideo && currentLastVideo) {
  1156.       _cachedLastVideo = mWeakRef(currentLastVideo);
  1157.     }
  1158.  
  1159.     if (prevLastVideo !== currentLastVideo && currentLastVideo && prevLastVideo) {
  1160.  
  1161.       let isPrevRemoved = !prevLastVideo.parentNode
  1162.  
  1163.  
  1164.       function getVideoListHash() {
  1165.  
  1166.         let res = [...document.querySelectorAll('[placeholder-videos] #items ytd-compact-video-renderer')].map(renderer => {
  1167.           return renderer.querySelector('a[href*="watch"][href*="v="]').getAttribute('href')
  1168.  
  1169.         }).join('|')
  1170.         // /watch?v=XXXXX|/watch?v=XXXXXX|/watch?v=XXXXXX
  1171.  
  1172.         // alternative - DOM.data.videoId
  1173.         // let elms = document.querySelectorAll('[placeholder-videos] #items ytd-compact-video-renderer')
  1174.         // let res = [...elms].map(elm=>elm.data.videoId||'').join('|') ;
  1175.  
  1176.         if (res.indexOf('||') >= 0) {
  1177.           res = '';
  1178.         }
  1179.  
  1180.         return res ? res : null;
  1181.       }
  1182.  
  1183.       if (isPrevRemoved) {
  1184.  
  1185.         // this is the replacement of videos instead of addition
  1186.  
  1187.         const searchBox = document.querySelector('[placeholder-for-youtube-play-next-queue] input#suggestions-search')
  1188.  
  1189.         let currentPlayListHash = getVideoListHash() || null;
  1190.  
  1191.         if (!currentPlayListHash) {
  1192.  
  1193.         } else if (!videoListBeforeSearch && searchBox) {
  1194.  
  1195.           videoListBeforeSearch = currentPlayListHash;
  1196.           if (videoListBeforeSearch) {
  1197.             //console.log('fromSearch', videoListBeforeSearch)
  1198.  
  1199.             requestAnimationFrame(function() {
  1200.  
  1201.               let renderer = document.querySelector('[placeholder-videos] ytd-watch-next-secondary-results-renderer');
  1202.               if (searchBox && searchBox.parentNode) searchBox.blur();
  1203.  
  1204.               if (renderer) {
  1205.                 let scrollParent = renderer.parentNode;
  1206.                 if (scrollParent.scrollHeight > scrollParent.offsetHeight) {
  1207.                   let targetTop = renderer.offsetTop;
  1208.                   if (searchBox && searchBox.parentNode == scrollParent) targetTop -= searchBox.offsetHeight
  1209.                   scrollParent.scrollTop = targetTop - scrollParent.firstChild.offsetTop;
  1210.                 }
  1211.               }
  1212.  
  1213.             });
  1214.  
  1215.           }
  1216.  
  1217.         } else if (videoListBeforeSearch) {
  1218.  
  1219.           if (currentPlayListHash != videoListBeforeSearch) {
  1220.  
  1221.             videoListBeforeSearch = null;
  1222.             //console.log('fromSearch', videoListBeforeSearch)
  1223.  
  1224.  
  1225.           }
  1226.  
  1227.         }
  1228.  
  1229.  
  1230.       }
  1231.  
  1232.  
  1233.     }
  1234.  
  1235.  
  1236.  
  1237.  
  1238.   }
  1239.  
  1240.   function base_ChatExist() {
  1241.  
  1242.     let ytdFlexyElm = kRef(ytdFlexy);
  1243.     if (!scriptEnable || !ytdFlexyElm) return null;
  1244.  
  1245.     // no mutation triggering if the changes are inside the iframe 
  1246.  
  1247.     // 1) Detection of #continuations inside iframe
  1248.     // iframe ownerDocument is accessible due to same origin
  1249.     // if the chatroom is collasped, no determination of live chat or replay (as no #continuations and somehow a blank iframe doc)
  1250.  
  1251.     // 2) Detection of meta tag
  1252.     // This is fastest but not reliable. It is somehow a bug that the navigation might not update the meta tag content
  1253.  
  1254.     // 3) Detection of HTMLElement inside video player for live video
  1255.  
  1256.     // (1)+(3) = solution
  1257.  
  1258.     let attr_chatblock = null
  1259.     let attr_chatcollapsed = null;
  1260.  
  1261.     const elmChat = document.querySelector('ytd-live-chat-frame#chat')
  1262.     let elmCont = null;
  1263.     if (elmChat) {
  1264.       elmCont = chatFrameElement('yt-live-chat-renderer #continuations')
  1265.  
  1266.  
  1267.       let s = 0;
  1268.       if (elmCont) {
  1269.         //not found if it is collasped.
  1270.         s |= elmCont.querySelector('yt-timed-continuation') ? 1 : 0;
  1271.         s |= elmCont.querySelector('yt-live-chat-replay-continuation, yt-player-seek-continuation') ? 2 : 0;
  1272.         //s |= elmCont.querySelector('yt-live-chat-restricted-participation-renderer')?4:0;
  1273.         if (s == 1) {
  1274.           attr_chatblock = 'chat-live';
  1275.         }else if (s == 2) attr_chatblock = 'chat-playback';
  1276.  
  1277.         if (s == 1) $("span#tab3-txt-loader").text('');
  1278.  
  1279.       } else if (!ytdFlexyElm.hasAttribute('userscript-chatblock')) {
  1280.         // live chat frame but type not known
  1281.           
  1282.         attr_chatblock = '';
  1283.  
  1284.       }
  1285.       //keep unknown as original    
  1286.       
  1287.       
  1288.       let isCollapsed = !!elmChat.hasAttribute('collapsed');
  1289.       attr_chatcollapsed = isCollapsed;
  1290.  
  1291.     } else {
  1292.       attr_chatblock = false;
  1293.       attr_chatcollapsed = false;
  1294.  
  1295.     }
  1296.  
  1297.     return { attr_chatblock, attr_chatcollapsed }
  1298.  
  1299.   }
  1300.  
  1301.  
  1302.   function mtf_ChatExist() {
  1303.  
  1304.     let ytdFlexyElm = kRef(ytdFlexy);
  1305.     if (!scriptEnable || !ytdFlexyElm) return;
  1306.  
  1307.     if (deferredVarYTDHidden) return;
  1308.  
  1309.     const elmChat = document.querySelector('ytd-live-chat-frame#chat')
  1310.     let elmCont = null;
  1311.     if (elmChat) {
  1312.       elmCont = chatFrameElement('yt-live-chat-renderer #continuations')
  1313.     }
  1314.  
  1315.     const chatBlockR = (elmChat ? 1 : 0) + (elmCont ? 2 : 0)
  1316.     if (Q.mtf_chatBlockQ !== chatBlockR) {
  1317.       Q.mtf_chatBlockQ = chatBlockR
  1318.       let rChatExist = base_ChatExist();
  1319.       //console.log(2446, rChatExist)
  1320.       if (rChatExist) {
  1321.         let { attr_chatblock, attr_chatcollapsed } = rChatExist;
  1322.         wAttr(ytdFlexyElm, 'userscript-chatblock', attr_chatblock)
  1323.         wAttr(ytdFlexyElm, 'userscript-chat-collapsed', attr_chatcollapsed)
  1324.         
  1325.         if(attr_chatblock=='chat-live') _disableComments();
  1326.       }
  1327.     }
  1328.  
  1329.   }
  1330.  
  1331.  
  1332.  
  1333.  
  1334.   let lastScrollAt1 = 0;
  1335.  
  1336.   function makeBodyScrollByEvt() {
  1337.     let ct = Date.now();
  1338.     if (ct - lastScrollAt1 < 6) return; // avoid duplicate calling
  1339.     lastScrollAt1 = ct;
  1340.     window.dispatchEvent(new Event("scroll")); // dispatch Scroll Event to Window for content display
  1341.   }
  1342.  
  1343.   let lastScrollAt2 = 0;
  1344.  
  1345.   function makeBodyScroll() {
  1346.     let ct = Date.now();
  1347.     if (ct - lastScrollAt2 < 30) return; // avoid over triggering
  1348.     lastScrollAt2 = ct;
  1349.     requestAnimationFrame(() => {
  1350.       window.dispatchEvent(new Event("scroll")); // ask youtube to display content
  1351.     })
  1352.   }
  1353.  
  1354.   //let requestingComments = null
  1355.   //let scrollForComments_lastStart = 0;
  1356.    /*
  1357.   function scrollForComments_TF() {
  1358.  
  1359.     let comments = requestingComments;
  1360.     if (!comments) return;
  1361.     if (comments.hasAttribute('hidden')) {
  1362.       window.dispatchEvent(new Event("scroll"));
  1363.     } else requestingComments = null;
  1364.  
  1365.   }
  1366.   function scrollForComments() {
  1367.     scrollForComments_TF();
  1368.     if (!requestingComments) return;
  1369.     requestAnimationFrame(scrollForComments_TF);
  1370.     let ct = Date.now();
  1371.     if (ct - scrollForComments_lastStart < 60) return;
  1372.     scrollForComments_lastStart = ct;
  1373.     timeline.setTimeout(scrollForComments_TF, 80);
  1374.     timeline.setTimeout(scrollForComments_TF, 240);
  1375.     timeline.setTimeout(scrollForComments_TF, 870);
  1376.   
  1377.   }
  1378.   */
  1379.  
  1380.  
  1381.  
  1382.   const mtoCs = { mtoNav: null, mtoBody: null };
  1383.  
  1384.  
  1385.   const mtoVs = {}
  1386.  
  1387.   const mutation_target_id_list = ['ytp-caption-window-container', 'items', 'button', 'movie_player', 'player-ads', 'hover-overlays', 'replies'];
  1388.   const mutation_target_class_list = ['ytp-panel-menu', 'ytp-endscreen-content'];
  1389.  
  1390.   function isMtoOverallSkip(dTarget) {
  1391.  
  1392.     if (!dTarget || dTarget.nodeType !== 1) return true;
  1393.  
  1394.     if (mutation_target_id_list.includes(dTarget.id)) return true;
  1395.  
  1396.     for (const c of dTarget.classList) {
  1397.       if (mutation_target_class_list.includes(c)) return true;
  1398.     }
  1399.  
  1400.     return false;
  1401.   }
  1402.  
  1403.  
  1404.   const mutation_div_id_ignorelist = [
  1405.         'metadata-line',
  1406.         'ytp-caption-window-container',
  1407.         'top-level-buttons-computed',
  1408.         'microformat',
  1409.         'visibility-button',
  1410.         'info-strings',
  1411.         'action-menu',
  1412.         'reply-button-end'
  1413.     ];
  1414.  
  1415.   const mutation_div_class_ignorelist = [
  1416.         'badge', 'tp-yt-paper-tooltip', 'ytp-autonav-endscreen-upnext-header',
  1417.         'ytp-bound-time-left', 'ytp-bound-time-right', 'ytp-share-icon',
  1418.         'ytp-tooltip-title', 'annotation', 'ytp-copylink-icon', 'ytd-thumbnail',
  1419.         'paper-ripple',
  1420.         //caption
  1421.         'captions-text', 'caption-visual-line', 'ytp-caption-segment', 'ytp-caption-window-container',
  1422.         //menu
  1423.         'ytp-playlist-menu-button-text',
  1424.  
  1425.         'ytp-bezel-icon', 'ytp-bezel-text',
  1426.         'dropdown-content',
  1427.         'tp-yt-paper-menu-button', 'tp-yt-iron-dropdown',
  1428.  
  1429.         'ytd-metadata-row-renderer', // #content.ytd-metadata-row-renderer inside each of ytd-metadata-row-renderer (ytd-expander)
  1430.         'ytd-engagement-panel-section-list-renderer', // {div#content.style-scope.ytd-engagement-panel-section-list-renderer} inside each of ytd-engagement-panel-section-list-renderer
  1431.  
  1432.         'autocomplete-suggestions' // autocomplete-suggestions
  1433.     ];
  1434.  
  1435.   const mutation_target_tag_ignorelist = [
  1436.         'ytd-channel-name', 'tp-yt-iron-dropdown', 'tp-yt-paper-tooltip',
  1437.         'tp-yt-paper-listbox', 'yt-img-shadow', 'ytd-thumbnail', 'ytd-video-meta-block',
  1438.  
  1439.         'yt-icon-button', 'tp-yt-paper-button', 'yt-formatted-string', 'yt-icon', 'button', 'paper-ripple',
  1440.  
  1441.         'ytd-player-microformat-renderer',
  1442.         'ytd-engagement-panel-section-list-renderer', 'ytd-engagement-panel-title-header-renderer',
  1443.         'ytd-comment-renderer', 'ytd-menu-renderer', 'ytd-badge-supported-renderer',
  1444.         'ytd-subscribe-button-renderer', 'ytd-subscription-notification-toggle-button-renderer',
  1445.         'ytd-button-renderer', 'ytd-toggle-button-renderer',
  1446.         'yt-pdg-comment-chip-renderer', 'ytd-comment-action-buttons-renderer', 'ytd-comment-thread-renderer',
  1447.         'ytd-compact-radio-renderer', 'ytd-compact-video-renderer',
  1448.         'ytd-video-owner-renderer',
  1449.         'ytd-metadata-row-renderer', //ytd-metadata-row-renderer is part of the #collapsible inside ytd-expander
  1450.  
  1451.         'ytd-moving-thumbnail-renderer',
  1452.         'ytd-thumbnail-overlay-toggle-button-renderer',
  1453.         'ytd-thumbnail-overlay-bottom-panel-renderer', 'ytd-thumbnail-overlay-equalizer',
  1454.         'ytd-thumbnail-overlay-now-playing-renderer', 'ytd-thumbnail-overlay-resume-playback-renderer',
  1455.         'ytd-thumbnail-overlay-side-panel-renderer', 'ytd-thumbnail-overlay-time-status-renderer',
  1456.         'ytd-thumbnail-overlay-hover-text-renderer',
  1457.  
  1458.         'yt-interaction',
  1459.         'tp-yt-paper-spinner-lite', 'tp-yt-paper-spinner',
  1460.  
  1461.         'h1', 'h2', 'h3', 'h4', 'h5', 'span', 'a',
  1462.  
  1463.         'meta', 'br', 'script', 'style', 'link', 'dom-module', 'template'
  1464.     ];
  1465.  
  1466.   function isMtoTargetSkip(mutation) {
  1467.     //skip not important mutation tartget
  1468.  
  1469.     if (!mutation) return true;
  1470.     let { type, target } = mutation
  1471.  
  1472.     if (!target || target.nodeType !== 1 || type != 'childList') return true;
  1473.  
  1474.     let tagName = target.nodeName.toLowerCase();
  1475.  
  1476.     if (mutation_target_tag_ignorelist.includes(tagName)) return true;
  1477.  
  1478.     switch (tagName) {
  1479.  
  1480.  
  1481.       case 'ytd-expander':
  1482.         if (target.id == 'expander' && Q.comments_section_loaded == 1 && target.classList.contains('ytd-comment-renderer')) return true; // load comments
  1483.         return false;
  1484.  
  1485.       case 'div':
  1486.  
  1487.         if (target.id == 'contents') {
  1488.           return false;
  1489.         }
  1490.         if (mutation_div_id_ignorelist.includes(target.id)) return true;
  1491.  
  1492.         for (const c of target.classList) {
  1493.           if (mutation_div_class_ignorelist.includes(c)) return true;
  1494.         }
  1495.  
  1496.         return false;
  1497.  
  1498.     }
  1499.  
  1500.     return false;
  1501.  
  1502.   }
  1503.  
  1504.  
  1505.   function mtf_forceCheckLiveVideo() {
  1506.     // once per $$player-playback-timestamp$$ {#ytd-player .ytp-time-display} &&  $$chat-frame$$ {ytd-live-chat-frame#chat} detection
  1507.     // reset after popstatechange / videochange
  1508.  
  1509.     if(mtf_forceCheckLiveVideo_disable) return ;
  1510.  
  1511.     let ytdFlexyElm = kRef(ytdFlexy);
  1512.     if (!scriptEnable || !ytdFlexyElm) return ;
  1513.  
  1514.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1515.     const playerLabel = document.querySelector('ytd-watch-flexy:not([hidden]) #ytd-player .ytp-time-display') && document.querySelector('ytd-watch-flexy:not([hidden]) ytd-live-chat-frame#chat')
  1516.     if (!playerLabel) return ;
  1517.     mtf_forceCheckLiveVideo_disable = 1;
  1518.     timeline.setTimeout(FP.fireOnce_forceCheckLiveVideo_tf, 170)
  1519.     return ;
  1520.   }
  1521.  
  1522.   // continuous check for element relocation
  1523.   function mtf_append_comments() {
  1524.  
  1525.     let ytdFlexyElm = kRef(ytdFlexy);
  1526.     if (!scriptEnable || !ytdFlexyElm) return;
  1527.  
  1528.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1529.  
  1530.     let comments = rootElement.querySelector('#primary ytd-watch-metadata ~ ytd-comments#comments');
  1531.     if (comments) $(comments).appendTo('#tab-comments').attr('data-dom-changed-by-tabview-youtube', scriptVersionForExternal)
  1532.   }
  1533.  
  1534.   // continuous check for element relocation
  1535.   function mtf_liveChatBtnF() {
  1536.     let ytdFlexyElm = kRef(ytdFlexy);
  1537.     if (!scriptEnable || !ytdFlexyElm) return;
  1538.  
  1539.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1540.  
  1541.     let button = rootElement.querySelector('ytd-live-chat-frame#chat>.ytd-live-chat-frame#show-hide-button:nth-child(n+2)');
  1542.     if (button) button.parentNode.insertBefore(button, button.parentNode.firstChild)
  1543.   }
  1544.  
  1545.  
  1546.  
  1547.   // continuous check for element relocation
  1548.   // fired at begining & window resize, etc
  1549.   function mtf_append_playlist() {
  1550.  
  1551.     let ytdFlexyElm = kRef(ytdFlexy);
  1552.     if (!scriptEnable || !ytdFlexyElm) return;
  1553.  
  1554.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1555.  
  1556.     let ple1 = rootElement.querySelector("*:not(#ytd-userscript-playlist)>ytd-playlist-panel-renderer#playlist");
  1557.     if (ple1) {
  1558.       let ct = Date.now();
  1559.       let truePlaylist = null;
  1560.       let truePlaylist_items = document.querySelector('ytd-playlist-panel-renderer#playlist #items:not(:empty)');
  1561.       if (truePlaylist_items) {
  1562.  
  1563.         let pElm = truePlaylist_items.parentNode;
  1564.         while (pElm && pElm.nodeType === 1) {
  1565.           if (pElm.id == 'playlist') {
  1566.             pElm.setAttribute('tabview-true-playlist', ct)
  1567.             truePlaylist = pElm;
  1568.             break;
  1569.           }
  1570.           pElm = pElm.parentNode;
  1571.         }
  1572.  
  1573.       }
  1574.  
  1575.       if (!truePlaylist) truePlaylist = ple1; // NOT NULL
  1576.  
  1577.       for (const s of document.querySelectorAll(`*:not(#ytd-userscript-playlist)>ytd-playlist-panel-renderer#playlist:not([tabview-true-playlist="${ct}"])`))
  1578.         s.parentNode.removeChild(s);
  1579.  
  1580.       let $wrapper = getWrapper('ytd-userscript-playlist')
  1581.       $wrapper.append(truePlaylist).appendTo(document.querySelector("#tab-list"));
  1582.       truePlaylist.setAttribute('data-dom-changed-by-tabview-youtube', scriptVersionForExternal)
  1583.       setDisplayedPlaylist(); // relocation after re-layout
  1584.  
  1585.       requestAnimationFrame(() => {
  1586.         let ytdFlexyElm = kRef(ytdFlexy);
  1587.         if (!scriptEnable || !ytdFlexyElm) return;
  1588.         if (!switchTabActivity_lastTab && (ytdFlexyElm.getAttribute('tabview-selection') + '').indexOf('#tab-') === 0 && /https\:\/\/www\.youtube\.com\/watch.*[\?\&]list=[\w\-\_]+/.test(location.href)) {
  1589.           if (setToActiveTab('#tab-list')) switchTabActivity_lastTab = '#tab-list';
  1590.         }
  1591.       })
  1592.  
  1593.     }
  1594.   }
  1595.  
  1596.  
  1597.   // content fix - info & playlist
  1598.   // fired at begining, and keep for in case any change
  1599.   function mtf_fix_details() {
  1600.  
  1601.     if (!scriptEnable) return;
  1602.  
  1603.     if (no_fix_contents_until < Date.now()) {
  1604.       const content = document.querySelector('#meta-contents ytd-expander>#content, #tab-info ytd-expander>#content')
  1605.       if (content) {
  1606.         no_fix_contents_until = Date.now() + 3000;
  1607.         timeline.setTimeout(function() {
  1608.           const expander = content.parentNode;
  1609.  
  1610.           if (expander.hasAttribute('collapsed')) wAttr(expander, 'collapsed', false);
  1611.           expander.style.setProperty('--ytd-expander-collapsed-height', '');
  1612.  
  1613.           let btn1 = expander.querySelector('tp-yt-paper-button#less:not([hidden])');
  1614.           let btn2 = expander.querySelector('tp-yt-paper-button#more:not([hidden])');
  1615.  
  1616.           if (btn1) wAttr(btn1, 'hidden', true);
  1617.           if (btn2) wAttr(btn2, 'hidden', true);
  1618.         }, 40);
  1619.  
  1620.       }
  1621.     }
  1622.  
  1623.     if (no_fix_playlist_until < Date.now()) {
  1624.       // just in case the playlist is collapsed
  1625.       const playlist = document.querySelector('#tab-list ytd-playlist-panel-renderer#playlist')
  1626.       if (playlist) {
  1627.         no_fix_playlist_until = Date.now() + 3000;
  1628.         timeline.setTimeout(function() {
  1629.           if (playlist.hasAttribute('collapsed')) wAttr(playlist, 'collapsed', false);
  1630.           if (playlist.hasAttribute('collapsible')) wAttr(playlist, 'collapsible', false);
  1631.         }, 40)
  1632.       }
  1633.     }
  1634.  
  1635.  
  1636.   }
  1637.  
  1638.  
  1639.  
  1640.   function isNullComments() {
  1641.  
  1642.     let comments = document.querySelector('ytd-comments#comments')
  1643.     if (!comments || comments.hasAttribute('hidden')) return true;
  1644.  
  1645.   }
  1646.  
  1647.  
  1648.   function getFMT(ytdFlexyElm) {
  1649.  
  1650.  
  1651.     let fmt = ["ytd-comments#comments #count.ytd-comments-header-renderer", 'ytd-item-section-renderer#sections #header ~ #contents>ytd-message-renderer'].map(s => {
  1652.  
  1653.       let elm = ytdFlexyElm.querySelector(s)
  1654.       if (!elm) return null;
  1655.       return elm.querySelector('yt-formatted-string') || elm.closest('yt-formatted-string') || null
  1656.  
  1657.  
  1658.     });
  1659.  
  1660.     return fmt
  1661.   }
  1662.  
  1663.   function toFST(elm) {
  1664.     if (!elm) return null;
  1665.     return elm.querySelector('yt-formatted-string') || elm.closest('yt-formatted-string') || null
  1666.   }
  1667.  
  1668.   function _innerCommentsLoader(rootElement) {
  1669.  
  1670.     let ytdFlexyElm = kRef(ytdFlexy);
  1671.     if (!scriptEnable || !ytdFlexyElm) return;
  1672.     
  1673.     if (deferredVarYTDHidden) return;
  1674.  
  1675.  
  1676.     let messageElm, messageStr, commentRenderer;
  1677.     let diffCSS = `[tabview-cache-time="${sect_hTime}"]`
  1678.  
  1679.     if (commentRenderer = rootElement.querySelector(`ytd-comments#comments #count.ytd-comments-header-renderer:not(${diffCSS})`)) {
  1680.  
  1681.       scheduledCommentRefresh=false;
  1682.       let eTime = Date.now();
  1683.  
  1684.       sect_holder = mWeakRef(commentRenderer);
  1685.       sect_hText = commentRenderer.textContent;
  1686.       sect_hTime = eTime;
  1687.       commentRenderer.setAttribute('tabview-cache-time', eTime);
  1688.  
  1689.       return {
  1690.         status: 1,
  1691.         f: () => {
  1692.  
  1693.           let span = document.querySelector("span#tab3-txt-loader")
  1694.           let r = '0';
  1695.           let txt = commentRenderer.textContent
  1696.           if (typeof txt == 'string') {
  1697.             let m = txt.match(/[\d\,\s]+/)
  1698.             if (m) {
  1699.               r = m[0].trim()
  1700.  
  1701.  
  1702.             }
  1703.           }
  1704.           
  1705.           if (span){
  1706.  
  1707.             let tab_btn = span.closest('.tab-btn[userscript-tab-content="#tab-comments"]')
  1708.             if(tab_btn)tab_btn.setAttribute('loaded-comment','normal')
  1709.             span.textContent = r;
  1710.           } 
  1711.           //console.log(754)
  1712.           mtoInterval = mtoInterval2;
  1713.           scheduledCommentRefresh=false;
  1714.           setCommentSection(1);
  1715.           comments_section_loaded_elm = mWeakRef(document.querySelector('ytd-comments#comments div#contents'))
  1716.         }
  1717.       }
  1718.  
  1719.     } else if ((messageElm = rootElement.querySelector(`ytd-item-section-renderer#sections #header ~ #contents > ytd-message-renderer:not(${diffCSS})`)) && (messageStr = (messageElm.textContent || '').trim())) { //ytd-message-renderer
  1720.       // it is possible to get the message before the header generation.
  1721.       // sample link - https://www.youtube.com/watch?v=PVUZ8Nvr1ic
  1722.       // sample link - https://www.youtube.com/watch?v=yz8AiQc1Bk8
  1723.  
  1724.       scheduledCommentRefresh=false;
  1725.       let eTime = Date.now();
  1726.  
  1727.       sect_holder = mWeakRef(messageElm);
  1728.       sect_hText = messageElm.textContent;
  1729.       sect_hTime = eTime;
  1730.       messageElm.setAttribute('tabview-cache-time', eTime);
  1731.  
  1732.       return {
  1733.         status: 2,
  1734.         f: () => {
  1735.           timeline.setTimeout(function() {
  1736.             let span = document.querySelector("span#tab3-txt-loader")
  1737.             const mainMsg = messageElm.querySelector('#message, #submessage')
  1738.             if (mainMsg && mainMsg.textContent) {
  1739.               for (const msg of mainMsg.querySelectorAll('*:not(:empty)')) {
  1740.                 if (msg.childElementCount === 0 && msg.textContent) {
  1741.                   messageStr = msg.textContent.trim()
  1742.                   break
  1743.                 }
  1744.               }
  1745.             }
  1746.             if (span){
  1747.               let tab_btn = span.closest('.tab-btn[userscript-tab-content="#tab-comments"]')
  1748.               if(tab_btn)tab_btn.setAttribute('loaded-comment','message')
  1749.               span.textContent ='\u200B';
  1750.             } 
  1751.             mtoInterval = mtoInterval2;
  1752.             scheduledCommentRefresh=false;
  1753.             setCommentSection(1);
  1754.             comments_section_loaded_elm = mWeakRef(document.querySelector('ytd-comments#comments div#contents'))
  1755.           }, 40);
  1756.         }
  1757.       }
  1758.  
  1759.     }
  1760.  
  1761.   }
  1762.  
  1763.   const atChange = async ()=>{
  1764.  
  1765.     // call when video change / popstate change / switch back from mini-view
  1766.  
  1767.     let ytdFlexyElm = kRef(ytdFlexy);
  1768.     if(!ytdFlexyElm) return;
  1769.  
  1770.     mtf_forceCheckLiveVideo_disable = 0; 
  1771.     mtf_forceCheckLiveVideo();
  1772.  
  1773.     if(Q.comments_section_loaded===0){
  1774.  
  1775.       const tabBtn = document.querySelector('[userscript-tab-content="#tab-comments"].tab-btn-hidden')
  1776.       if(tabBtn) {
  1777.         tabBtn.classList.remove("tab-btn-hidden") //if contains
  1778.       }
  1779.  
  1780.     }
  1781.   }
  1782.  
  1783.  
  1784.  
  1785.   function hookSection(){
  1786.  
  1787.  
  1788.     //console.log(3300)
  1789.  
  1790.     let ytdFlexyElm = kRef(ytdFlexy);
  1791.     if (!scriptEnable || !ytdFlexyElm) return ;
  1792.  
  1793.     const comments = ytdFlexyElm.querySelector('ytd-comments#comments')
  1794.     if (!comments) return ;
  1795.  
  1796.     if(deferredVarYTDHidden) return;
  1797.  
  1798.     //console.log(3310)
  1799.  
  1800.     //new MutationObserver(function(){console.log(comments.querySelectorAll('*').length)}).observe(comments,{ attributes: true, childList: true, subtree: true })
  1801.     
  1802.  
  1803.     function foundSection(sections){
  1804.  
  1805.       
  1806.       //console.log(3320)
  1807.  
  1808.       function ulfx() {
  1809.         //console.log(1220)
  1810.  
  1811.  
  1812.         const rootElement = comments.parentNode
  1813.  
  1814.  
  1815.         if (pendingOne && comments.querySelectorAll('[tabview-cache-time]').length > 1) return;
  1816.         pendingOne = false;
  1817.         if(!rootElement) return; //prevent unknown condition
  1818.         
  1819.  
  1820.  
  1821.         let innerCommentsLoaderRet = _innerCommentsLoader(rootElement);
  1822.  
  1823.         //console.log(1222,_innerCommentsLoader)
  1824.  
  1825.         if (!innerCommentsLoaderRet) {
  1826.  
  1827.  
  1828.           let holder = kRef(sect_holder);
  1829.           if (holder && comments.contains(holder)) {
  1830.  
  1831.             if (sect_lastUpdate) return;
  1832.             sect_lastUpdate = 1;
  1833.  
  1834.             timeline.setTimeout(function() {
  1835.               //console.log(2633)
  1836.               if (holder.textContent !== sect_hText && sect_hTime > 0) {
  1837.  
  1838.                 if (comments.querySelectorAll('[tabview-cache-time]').length === 1) {
  1839.  
  1840.                   sect_hTime--;
  1841.  
  1842.                   let innerCommentsLoaderRet = _innerCommentsLoader(rootElement);
  1843.  
  1844.                   if (innerCommentsLoaderRet) {
  1845.                     //console.log(9442)
  1846.                     innerCommentsLoaderRet.f();
  1847.                     fetchCommentsFinished();
  1848.                   }
  1849.  
  1850.                   pendingOne = false;
  1851.  
  1852.                 }
  1853.  
  1854.  
  1855.               }
  1856.               sect_lastUpdate = 0
  1857.             }, 400)
  1858.  
  1859.           } else if (sect_holder) {
  1860.             sect_holder = null
  1861.             sect_hTime = 0;
  1862.             sect_lastUpdate = 0;
  1863.             pendingOne = false;
  1864.             timeline.setTimeout(()=>{
  1865.               if(!deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0 && comments.hasAttribute('hidden')){
  1866.  
  1867.                 scheduledCommentRefresh=false; // logic tbc
  1868.                 resetCommentSection();
  1869.                 
  1870.               }
  1871.             },142);
  1872.             
  1873.             Q.mutationTarget=null;
  1874.             FP.mtf_attrComments(); // in case for popstate
  1875.           }
  1876.  
  1877.  
  1878.         } else {
  1879.  
  1880.           //console.log(9443)
  1881.           innerCommentsLoaderRet.f();
  1882.           fetchCommentsFinished();
  1883.  
  1884.           pendingOne = true;
  1885.  
  1886.         }
  1887.  
  1888.  
  1889.  
  1890.       }
  1891.  
  1892.       function observerHook(mutationsList, observer){
  1893.  
  1894.         let valid = false
  1895.         for (const mutation of mutationsList) {
  1896.  
  1897.           let target = mutation.target;
  1898.           if (!target) break;
  1899.           if (!target.id) break;
  1900.           let classList = target.classList;
  1901.  
  1902.  
  1903.           if (
  1904.             classList.contains('ytd-item-section-renderer') ||
  1905.             classList.contains('ytd-comments-header-renderer') ||
  1906.             classList.contains('ytd-message-renderer')) {
  1907.             valid = true
  1908.             break;
  1909.           }
  1910.  
  1911.           break; // only outest mutation
  1912.  
  1913.  
  1914.         }
  1915.         if (valid) ulfx();
  1916.       }
  1917.  
  1918.       
  1919.       if(sections.hasAttribute('tabview-comment-section-checked')){
  1920.  
  1921.         //console.log(3612)
  1922.         ulfx();
  1923.         
  1924.  
  1925.       }else{
  1926.  
  1927.         pendingOne = false;
  1928.         //console.log(3611)
  1929.         const observer = new MutationObserver(observerHook)
  1930.         sections.setAttribute('tabview-comment-section-checked','')
  1931.         const config = { childList: true, subtree: true }; 
  1932.         observer.observe(sections, config);
  1933.         ulfx();
  1934.  
  1935.  
  1936.       }
  1937.  
  1938.  
  1939.  
  1940.     }
  1941.     //console.log(3241, location.href)
  1942.     
  1943.     let cid_render_section = timeline.setInterval(function() {
  1944.  
  1945.      // console.log(3244, location.href)
  1946.  
  1947.  
  1948.       const rootElement = comments.parentNode
  1949.  
  1950.       let sections = rootElement.querySelector('ytd-comments#comments > ytd-item-section-renderer#sections');
  1951.  
  1952.  
  1953.       if (sections) {
  1954.  
  1955.         timeline.clearInterval(cid_render_section);
  1956.         foundSection(sections);
  1957.  
  1958.       }
  1959.  
  1960.     }, 30)
  1961.  
  1962.  
  1963.  
  1964.   }
  1965.  
  1966.  
  1967.   let mtc_store=0;
  1968.   let mtc_cid = 0;
  1969.   const cssOnceFunc = {
  1970.     [`ytd-comments#comments:not([o3r-${sa_comments}])`]:(comments)=>{
  1971.       
  1972.       // once per {ytd-comments#comments} detection
  1973.  
  1974.       let ytdFlexyElm = kRef(ytdFlexy);
  1975.       if (!scriptEnable || !ytdFlexyElm) return;
  1976.  
  1977.       if (!comments) return;
  1978.  
  1979.  
  1980.  
  1981.  
  1982.       if(mtoVisibility_Comments.bindElement(comments)){
  1983.         mtoVisibility_Comments.observer.check(9);
  1984.       }
  1985.       
  1986.       pageInit_attrComments = true
  1987.       hookSection();
  1988.  
  1989.       let dComments = comments
  1990.       timeline.setTimeout(() => nativeFunc(dComments, "loadComments"), 20)
  1991.       comments = null;
  1992.  
  1993.     },
  1994.     [`ytd-playlist-panel-renderer#playlist:not([o3r-${sa_playlist}])`]:(playlist)=>{
  1995.  
  1996.         // once per {ytd-playlist-panel-renderer#playlist} detection
  1997.  
  1998.         let ytdFlexyElm = kRef(ytdFlexy);
  1999.         if (!scriptEnable || !ytdFlexyElm) return;
  2000.  
  2001.         if (!playlist) return;
  2002.  
  2003.         if(mtoVisibility_Playlist.bindElement(playlist)){
  2004.           mtoVisibility_Playlist.observer.check(9)  //delay check required for browser bug - hidden changed not triggered 
  2005.         }
  2006.         playlist = null;
  2007.  
  2008.         return;
  2009.  
  2010.     },
  2011.     '#meta-contents ytd-expander:not([tabview-info-expander])':(expander)=>{
  2012.  
  2013.         // once per $$native-info-description$$ {#meta-contents ytd-expander} detection
  2014.  
  2015.         let ytdFlexyElm = kRef(ytdFlexy);
  2016.         if (!scriptEnable || !ytdFlexyElm) return ;
  2017.  
  2018.         if (!expander) return ;
  2019.         expander.setAttribute('tabview-info-expander','')
  2020.         $(expander).appendTo("#tab-info").attr('data-dom-changed-by-tabview-youtube', scriptVersionForExternal)
  2021.   
  2022.   
  2023.  
  2024.     },
  2025.   }
  2026.   const cssOnce = Object.keys(cssOnceFunc).join(', ')
  2027.  
  2028.   const regularCheck = (addP, removeP, mutationTarget)=>{
  2029.  
  2030.  
  2031.     let isInvalidAdding = mutationTarget && !mutationTarget.parentNode
  2032.  
  2033.       
  2034.     let promisesForAddition = !scriptEnable ? [] : addP > 0 && !isInvalidAdding ? [
  2035.  
  2036.         (async () => {
  2037.  
  2038.           
  2039.           //$callOnce('mtf_checkFlexy');
  2040.  
  2041.           const rootElement = Q.mutationTarget || kRef(ytdFlexy);
  2042.  
  2043.           if(rootElement){
  2044.  
  2045.             let fElms = rootElement.querySelectorAll(cssOnce)
  2046.             if(fElms.length>0){
  2047.  
  2048.               for(const fElm of fElms){
  2049.                 for(let cssSelctor in cssOnceFunc){
  2050.                   if(fElm.matches(cssSelctor)){
  2051.                     let f= cssOnceFunc[cssSelctor]
  2052.                     if(typeof f=='function') f(fElm);
  2053.                     break;
  2054.                   }
  2055.  
  2056.                 }
  2057.               }
  2058.  
  2059.               //$callOnce('mtf_initalAttr_comments');
  2060.               //$callOnce('mtf_initalAttr_playlist');
  2061.               // $callOnce('mtf_checkDescriptionLoaded');
  2062.             }
  2063.  
  2064.           }
  2065.  
  2066.         })(),
  2067.     
  2068.         (async () => {
  2069.  
  2070.  
  2071.           FP.mtf_initalAttr_chatroom();
  2072.           FP.mtf_initalAttr_engagement_panel();
  2073.           
  2074.           //$callOnce('mtf_initalAttr_chatroom');
  2075.          // $callOnce('mtf_initalAttr_engagement_panel');
  2076.  
  2077.           mtf_forceCheckLiveVideo();
  2078.             mtf_append_comments();
  2079.             mtf_liveChatBtnF();
  2080.             fixTabs();
  2081.             mtf_AfterFixTabs();
  2082.             mtf_append_playlist();
  2083.  
  2084.         })()
  2085.  
  2086.     ] : [];
  2087.     
  2088.   
  2089.     
  2090.     let promisesForEveryMutation = !scriptEnable ? [] : [
  2091.         (async () => {
  2092.             mtf_fix_details();
  2093.             mtf_ChatExist();
  2094.         })()
  2095.     ];
  2096.  
  2097.     return [...promisesForAddition, ...promisesForEveryMutation]
  2098.  
  2099.  
  2100.   }
  2101.  
  2102.   function setOnlyOneEPanel(ePanel){
  2103.  
  2104.     layoutStatusMutex.lockWith(unlock => {
  2105.  
  2106.       let cPanels = engagement_panels_();
  2107.       for (const entry of cPanels.list) {
  2108.         if (entry.ePanel != ePanel && entry.visible) ytBtnCloseEngagementPanel(entry.ePanel);
  2109.       }
  2110.       setTimeout(unlock, 30)
  2111.  
  2112.     })
  2113.  
  2114.   }
  2115.  
  2116.   const FP = {
  2117.  
  2118.     mtoNav_delayedF: () => {
  2119.  
  2120.       let { addP, removeP, mutationTarget } = Q;
  2121.  
  2122.       Q.addP = 0;
  2123.       Q.removeP = 0;
  2124.       
  2125.       mtc_store=Date.now()+1870
  2126.  
  2127.  
  2128.       let regularChecks = regularCheck(addP, removeP, mutationTarget);
  2129.  
  2130.       Promise.all(regularChecks).then(() => {
  2131.         regularChecks = null;
  2132.         
  2133.         mtc_store= Date.now() + 3870 // pending Comments start to load
  2134.         
  2135.         Q.mutationTarget = null;
  2136.  
  2137.         Q.mtoNav_requestNo--;
  2138.         //console.log('motnav reduced to', mtoNav_requestNo)
  2139.         if (Q.mtoNav_requestNo > 0) {
  2140.           Q.mtoNav_requestNo = 1;
  2141.           setTimeout(FP.mtoNav_delayedF, mtoInterval);
  2142.         }
  2143.       })
  2144.  
  2145.  
  2146.     },
  2147.  
  2148.     mtoNavF: (mutations, observer) => {
  2149.       //subtree DOM mutation checker - {ytd-watch-flexy} \single \subtree
  2150.  
  2151.       newVideoPageCheck()
  2152.  
  2153.       if (!scriptEnable) return;
  2154.       if (deferredVarYTDHidden) return;
  2155.  
  2156.       let ch = false;
  2157.  
  2158.       let reg = [];
  2159.       let dTarget = null;
  2160.  
  2161.       let wAddP = 0,
  2162.         wRemoveP = 0;
  2163.  
  2164.       let _last_mto_target = null;
  2165.       let _last_mto_target_valid = null;
  2166.  
  2167.       for (const mutation of mutations) {
  2168.         if (!mutation || !mutation.target || !mutation.target.parentNode) continue;
  2169.  
  2170.         let elementalMutation = false;
  2171.         let tAddP = 0,
  2172.           tRemoveP = 0;
  2173.  
  2174.         for (const addedNode of mutation.addedNodes) { //theoretically faster: only reading of states
  2175.           if (addedNode.nodeType === 1) {
  2176.             tAddP++;
  2177.             elementalMutation = true;
  2178.           }
  2179.         }
  2180.  
  2181.         for (const removedNode of mutation.removedNodes) { //theoretically faster: only reading of states
  2182.           if (removedNode.nodeType === 1) {
  2183.             tRemoveP++;
  2184.             elementalMutation = true;
  2185.           }
  2186.         }
  2187.  
  2188.         if (elementalMutation) { //skip all addition and removal operations without elemental changes (e.g. textNode modification)
  2189.  
  2190.           if (_last_mto_target === mutation.target) {
  2191.             // due to addition and removal operations to the same DOM
  2192.             if (_last_mto_target_valid) {
  2193.               // AddP & RemoveP is still valid
  2194.               wAddP += tAddP;
  2195.               wRemoveP += tRemoveP;
  2196.             }
  2197.             continue;
  2198.           }
  2199.           _last_mto_target = mutation.target;
  2200.  
  2201.           if (isMtoTargetSkip(mutation)) {
  2202.             _last_mto_target_valid = false;
  2203.             continue; //theoretically slower: creation of string variables
  2204.           } else {
  2205.             _last_mto_target_valid = true;
  2206.             wAddP += tAddP;
  2207.             wRemoveP += tRemoveP;
  2208.           }
  2209.  
  2210.  
  2211.  
  2212.           ch = true;
  2213.  
  2214.           reg.push(mutation);
  2215.  
  2216.           if (dTarget === null) dTarget = mutation.target; //first
  2217.           else if (dTarget === true) {} //ytdFlexy
  2218.           else if (dTarget.contains(mutation.target)) {} //first node is the container to all subsequential targets
  2219.           else { dTarget = true; } //the target is not the child of first node
  2220.  
  2221.         }
  2222.  
  2223.       }
  2224.  
  2225.       if (!ch) return; // dTarget must be true OR HTMLElement
  2226.  
  2227.       if (dTarget === true) dTarget = kRef(ytdFlexy); // major mutation occurance
  2228.       else if (dTarget === kRef(comments_section_loaded_elm) && wAddP > wRemoveP) return true; // ignore if comments are loaded (adding comments)
  2229.       else if (isMtoOverallSkip(dTarget)) return; // allow for multiple mutations at the same time - determinated after looping
  2230.  
  2231.  
  2232.  
  2233.       // 4 ~ 16 times per full page loading
  2234.  
  2235.       Q.addP += wAddP;
  2236.       Q.removeP += wRemoveP;
  2237.  
  2238.       if (Q.mutationTarget === null) Q.mutationTarget = dTarget;
  2239.       else if (Q.mutationTarget != dTarget) Q.mutationTarget = kRef(ytdFlexy);
  2240.  
  2241.       //console.log(prettyElm(dTarget), wAddP , wRemoveP, mtoInterval)
  2242.       //console.log(prettyElm(dTarget), reg.map(m=>prettyElm(m.target)))
  2243.       //console.log(7015, performance.now())
  2244.  
  2245.  
  2246.  
  2247.       Q.mtoNav_requestNo++;
  2248.       if (Q.mtoNav_requestNo == 1) setTimeout(FP.mtoNav_delayedF, mtoInterval);
  2249.  
  2250.     },
  2251.  
  2252.  
  2253.     mtoBodyF: function(mutations, observer) {
  2254.       //subtree DOM mutation checker - {body} \single \subtree
  2255.  
  2256.       if (!scriptEnable) return;
  2257.       if (deferredVarYTDHidden) return;
  2258.  
  2259.       for (const mutation of mutations) {
  2260.         for (const addedNode of mutation.addedNodes)
  2261.           if (addedNode.nodeType === 1) {
  2262.             if (addedNode.nodeName == "DIV" && addedNode.className.indexOf('autocomplete-suggestions') >= 0) {
  2263.               mtf_fixAutoCompletePosition(addedNode)
  2264.             }else if(addedNode.nodeName == "DIV" && (addedNode.id==='lyricscontainer' || addedNode.id==='showlyricsbutton')){
  2265.  
  2266.               goYoutubeGeniusLyrics();
  2267.  
  2268.             }
  2269.           }
  2270.       }
  2271.  
  2272.     },
  2273.  
  2274.     mtf_attrPlaylist: (attrName, newValue) => {
  2275.       //attr mutation checker - {ytd-playlist-panel-renderer#playlist} \single
  2276.       //::attr ~ hidden    
  2277.       //console.log(1210)
  2278.  
  2279.       if (!scriptEnable) return;
  2280.       if (deferredVarYTDHidden) return;
  2281.       let cssElm = kRef(ytdFlexy);
  2282.       if (!cssElm) return;
  2283.  
  2284.       let playlist = document.querySelector('ytd-playlist-panel-renderer#playlist')
  2285.       const tabBtn = document.querySelector('[userscript-tab-content="#tab-list"]');
  2286.       let isPlaylistHidden = playlist.hasAttribute('hidden')
  2287.       //console.log(1212.2, isPlaylistHidden, playlist.getAttribute('hidden'))
  2288.       if (tabBtn) {
  2289.         //console.log('attr playlist changed')
  2290.         if (tabBtn.classList.contains('tab-btn-hidden') && !isPlaylistHidden) {
  2291.           //console.log('attr playlist changed - no hide')
  2292.           tabBtn.classList.remove("tab-btn-hidden");
  2293.         } else if (!tabBtn.classList.contains('tab-btn-hidden') && isPlaylistHidden) {
  2294.           //console.log('attr playlist changed - add hide')
  2295.           hideTabBtn(tabBtn);
  2296.         }
  2297.       }
  2298.       /* visible layout for triggering hidden removal */
  2299.       akAttr(cssElm, 'tabview-youtube-playlist', isPlaylistHidden);
  2300.     },
  2301.     mtf_attrComments: (attrName, newValue) => {
  2302.       //attr mutation checker - {ytd-comments#comments} \single
  2303.       //::attr ~ hidden
  2304.  
  2305.       let ytdFlexyElm = kRef(ytdFlexy);
  2306.       if (!scriptEnable || !ytdFlexyElm) return;
  2307.       if (deferredVarYTDHidden) return;
  2308.  
  2309.       let comments = document.querySelector('ytd-comments#comments')
  2310.       const tabBtn = document.querySelector('[userscript-tab-content="#tab-comments"]');
  2311.       if (!comments || !tabBtn) return;
  2312.       let isCommentHidden = comments.hasAttribute('hidden')
  2313.       //console.log('attr comments changed')
  2314.  
  2315.       mtoInterval = mtoInterval1;
  2316.       
  2317.       mtc_store=Date.now()+2870
  2318.  
  2319.       if( mtf_forceCheckLiveVideo_disable === 2 ){
  2320.  
  2321.       }else if (!isCommentHidden) {
  2322.         
  2323.  
  2324.         akAttr(ytdFlexyElm, 'tabview-youtube-comments', false, 'K');
  2325.  
  2326.  
  2327.  
  2328.         //console.log('attr comments changed - no hide')
  2329.         tabBtn.classList.remove("tab-btn-hidden") //if contains
  2330.  
  2331.             
  2332.         
  2333.         //console.log(703)
  2334.  
  2335.         mtc_cid&&timeline.clearInterval(mtc_cid);
  2336.  
  2337.       } else if (isCommentHidden) {
  2338.  
  2339.         akAttr(ytdFlexyElm, 'tabview-youtube-comments', true, 'K'); 
  2340.         
  2341.         timeline.setTimeout(function(){
  2342.           if(!deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0 && comments.hasAttribute('hidden')){
  2343.             //console.log(3434)
  2344.             scheduledCommentRefresh=false;  //logic tbc
  2345.             resetCommentSection();
  2346.             //console.log(8022)
  2347.           }
  2348.         },142)
  2349.  
  2350.  
  2351.         if(!mtc_cid) mtc_cid=timeline.setInterval(()=>{
  2352.           if(mtc_store>Date.now()) return;
  2353.             timeline.clearInterval(mtc_cid)
  2354.             mtc_cid=0;
  2355.             if(mtf_forceCheckLiveVideo_disable===2)return;
  2356.             if(isNullComments()) _disableComments();
  2357.  
  2358.         },80)
  2359.  
  2360.       }
  2361.  
  2362.  
  2363.     },
  2364.  
  2365.  
  2366.     mtf_attrChatroom: (attrName, newValue) => {
  2367.       //attr mutation checker - {ytd-live-chat-frame#chat} \single
  2368.       //::attr ~ collapsed
  2369.  
  2370.       let ytdFlexyElm = kRef(ytdFlexy);
  2371.       if (!scriptEnable || !ytdFlexyElm) return;
  2372.       if (deferredVarYTDHidden) return;
  2373.  
  2374.       layoutStatusMutex.lockWith(unlock => {
  2375.  
  2376.         const chatBlock = document.querySelector('ytd-live-chat-frame#chat')
  2377.         const cssElm = kRef(ytdFlexy)
  2378.  
  2379.         if (!chatBlock || !cssElm) {
  2380.           unlock();
  2381.           return;
  2382.         }
  2383.  
  2384.         if (deferredVarYTDHidden) {
  2385.           unlock();
  2386.           return;
  2387.         }
  2388.  
  2389.         if (!cssElm.hasAttribute('userscript-chatblock')) wAttr(cssElm, 'userscript-chatblock', true);
  2390.         let isCollapsed = !!chatBlock.hasAttribute('collapsed');
  2391.         wAttr(cssElm, 'userscript-chat-collapsed', isCollapsed);
  2392.  
  2393.         if (cssElm.hasAttribute('userscript-chatblock') && !isCollapsed) lastShowTab = '#chatroom';
  2394.  
  2395.         if (!isCollapsed && document.querySelector('#right-tabs .tab-btn.active') && isWideScreenWithTwoColumns() && !isTheater()) {
  2396.           switchTabActivity(null);
  2397.           timeline.setTimeout(unlock, 40);
  2398.         } else {
  2399.           unlock();
  2400.         }
  2401.  
  2402.         if (!isCollapsed) {
  2403.           runAfterExpandChat();
  2404.         } else {
  2405.           chatBlock.removeAttribute('yt-userscript-iframe-loaded');
  2406.         }
  2407.  
  2408.       })
  2409.  
  2410.  
  2411.  
  2412.  
  2413.     },
  2414.  
  2415.     mtf_attrEngagementPanel: (mutations, observer) => {
  2416.       //attr mutation checker - {ytd-engagement-panel-section-list-renderer} \mutiple
  2417.       //::attr ~ visibility
  2418.  
  2419.       let ytdFlexyElm = kRef(ytdFlexy);
  2420.       if (!scriptEnable || !ytdFlexyElm) return;
  2421.  
  2422.       //multiple instance
  2423.       if (mutations) {
  2424.         for (const mutation of mutations) {
  2425.           let ePanel = mutation.target;
  2426.           if (ePanel.getAttribute('visibility') == 'ENGAGEMENT_PANEL_VISIBILITY_EXPANDED') {
  2427.             setOnlyOneEPanel(ePanel);
  2428.             break;
  2429.           }
  2430.         }
  2431.       }
  2432.       if (deferredVarYTDHidden) return;
  2433.  
  2434.       layoutStatusMutex.lockWith(unlock => {
  2435.  
  2436.         const ePanel = document.querySelector('ytd-watch-flexy ytd-engagement-panel-section-list-renderer')
  2437.         const cssElm = kRef(ytdFlexy)
  2438.  
  2439.         if (!ePanel || !cssElm) {
  2440.           unlock();
  2441.           return;
  2442.         }
  2443.         let previousValue = +cssElm.getAttribute('userscript-engagement-panel') || 0;
  2444.  
  2445.         let { shownRes, value, count } = engagement_panels_();
  2446.         let nextValue = value;
  2447.         let nextCount = count;
  2448.  
  2449.  
  2450.         if (nextCount == 0 && cssElm.hasAttribute('userscript-engagement-panel')) {
  2451.           storeLastPanel=null;
  2452.           wAttr(cssElm, 'userscript-engagement-panel', false);
  2453.           unlock();
  2454.         } else {
  2455.  
  2456.           if ((nextCount > 1) || (cssElm.hasAttribute('userscript-engagement-panel') && previousValue === nextValue)) {
  2457.             unlock();
  2458.             return;
  2459.           }
  2460.  
  2461.           cssElm.setAttribute('userscript-engagement-panel', nextValue);
  2462.  
  2463.           let b = false;
  2464.           if (previousValue != nextValue && nextValue > 0) {
  2465.             lastShowTab = `#engagement-panel-${nextValue}`;
  2466.             b = true;
  2467.             storeLastPanel = mWeakRef( shownRes[0])
  2468.             //console.log(9999, shownRes[0])
  2469.           }
  2470.  
  2471.           if (b && document.querySelector('#right-tabs .tab-btn.active') && isWideScreenWithTwoColumns() && !isTheater()) {
  2472.             switchTabActivity(null);
  2473.             timeline.setTimeout(unlock, 40);
  2474.           } else {
  2475.             unlock();
  2476.           }
  2477.         }
  2478.  
  2479.       })
  2480.  
  2481.  
  2482.  
  2483.  
  2484.     },
  2485.  
  2486.     mtf_initalAttr_playlist: () => {
  2487.       
  2488.     },
  2489.  
  2490.     mtf_initalAttr_comments: () => {
  2491.       
  2492.     },
  2493.  
  2494.     mtf_initalAttr_chatroom: () => {
  2495.       // every per [new] {ytd-live-chat-frame#chat} detection - reset after mini-playview
  2496.       
  2497.       let ytdFlexyElm = kRef(ytdFlexy);
  2498.       if (!scriptEnable || !ytdFlexyElm) return true;
  2499.  
  2500.       const rootElement = Q.mutationTarget || ytdFlexyElm;
  2501.  
  2502.  
  2503.       if (!mgChatFrame.inPage()) {
  2504.  
  2505.         mtoVisibility_Chatroom.clear(true);
  2506.  
  2507.         let chatroom = rootElement.querySelector(`ytd-live-chat-frame#chat:not([${sa_chatroom}]`)
  2508.         if (chatroom) {
  2509.           mgChatFrame.setVar(chatroom);
  2510.  
  2511.           if(mtoVisibility_Chatroom.bindElement(chatroom)){
  2512.             mtoVisibility_Chatroom.observer.check(9)
  2513.           }
  2514.  
  2515.           chatroom = null
  2516.         }
  2517.       }
  2518.       return true;
  2519.  
  2520.     },
  2521.  
  2522.     mtf_initalAttr_engagement_panel: () => {
  2523.       // every per $$non-checked-section-list$$ {ytd-watch-flexy ytd-engagement-panel-section-list-renderer:not([o3r-XXXXX])} detection
  2524.       
  2525.       let ytdFlexyElm = kRef(ytdFlexy);
  2526.       if (!scriptEnable || !ytdFlexyElm) return true;
  2527.  
  2528.       const rootElement = Q.mutationTarget || ytdFlexyElm;
  2529.  
  2530.       let toCheck = false;
  2531.       for (const engagement_panel of rootElement.querySelectorAll(
  2532.         `ytd-watch-flexy ytd-engagement-panel-section-list-renderer:not([o3r-${sa_epanel}])`
  2533.         )) {
  2534.  
  2535.  
  2536.  
  2537.         let bindRes = mtoVisibility_EngagementPanel.bindElement(engagement_panel, {
  2538.           attributes: true,
  2539.           attributeFilter: ['visibility'],
  2540.           attributeOldValue: true
  2541.         })
  2542.         
  2543.  
  2544.         if(bindRes) toCheck = true;
  2545.       }
  2546.  
  2547.       if (toCheck) FP.mtf_attrEngagementPanel()
  2548.  
  2549.       return true;
  2550.     },
  2551.  
  2552.  
  2553.  
  2554.     //live-chat / chat-replay
  2555.  
  2556.     fireOnce_forceCheckLiveVideo_tf: () => {
  2557.       // once per $$player-playback-timestamp$$ {#ytd-player .ytp-time-display} &&  $$chat-frame$$ {ytd-live-chat-frame#chat} detection
  2558.  
  2559.       let ytdFlexyElm = kRef(ytdFlexy);
  2560.       if (!scriptEnable || !ytdFlexyElm) return;
  2561.  
  2562.       let elm = document.querySelector('#ytd-player .ytp-time-display');
  2563.       if (elm && elm.classList.contains('ytp-live')) {
  2564.         //console.log(7006)
  2565.         ytdFlexyElm.setAttribute('userscript-chatblock', 'chat-live')
  2566.         //console.log(2441)
  2567.         mtf_forceCheckLiveVideo_disable = 2;
  2568.         
  2569.         _disableComments();
  2570.         
  2571.        //console.log(701)
  2572.         //disableComments_LiveChat();
  2573.       }
  2574.     },
  2575.  
  2576.     
  2577.  
  2578.     //comments
  2579. /*
  2580.     mtf_advancedComments: () => {
  2581.       // once per {ytd-comments#comments #continuations} detection
  2582.  
  2583.       //let ytdFlexyElm = kRef(ytdFlexy);
  2584.       //if (!scriptEnable || !ytdFlexyElm) return true;
  2585.  
  2586.       //const rootElement = Q.mutationTarget || ytdFlexyElm;
  2587.       //const continuations = document.querySelector("ytd-comments#comments #continuations");
  2588.       //if (!continuations) return true;
  2589.       //requestingComments = document.querySelector('ytd-comments#comments');
  2590.       //scrollForComments();
  2591.       return false;
  2592.     }
  2593.     */
  2594.  
  2595.  
  2596.   }
  2597.  
  2598.  
  2599.  
  2600.  
  2601.  
  2602.   let displayedPlaylist = null;
  2603.   let scrollingVideosList = null;
  2604.  
  2605.   let scriptEnable = false;
  2606.   let scriptEC = 0;
  2607.   let lastShowTab = null;
  2608.  
  2609.   let _cachedLastVideo = null;
  2610.   let videoListBeforeSearch = null;
  2611.   let no_fix_contents_until = 0;
  2612.   let no_fix_playlist_until = 0;
  2613.   let statusCollasped = 0;
  2614.  
  2615.   let ytdFlexy = null;
  2616.  
  2617.   function pluginUnhook() {
  2618.     _pluginUnhook()
  2619.  
  2620.     resetCommentSection();
  2621.  
  2622.   }
  2623.  
  2624.   function _pluginUnhook() {
  2625.  
  2626.     sect_lastUpdate = 0;
  2627.     sect_holder = null;
  2628.     sect_hTime = 0;
  2629.  
  2630.     //console.log(8001)
  2631.  
  2632.     videoListBeforeSearch = null;
  2633.     statusCollasped = 0;
  2634.     _cachedLastVideo = null;
  2635.     lastShowTab = null;
  2636.     displayedPlaylist = null;
  2637.     scrollingVideosList = null;
  2638.     scriptEnable = false;
  2639.     scriptEC++;
  2640.     if (scriptEC > 788888888) scriptEC = 188888888;
  2641.     ytdFlexy = null;
  2642.     wls.layoutStatus = null;
  2643.  
  2644.     //console.log('unc01')
  2645.  
  2646.     mtoVisibility_EngagementPanel.clear(true)
  2647.     mtoVisibility_Playlist.clear(true)
  2648.     mtoVisibility_Comments.clear(true)
  2649.  
  2650.     mgChatFrame.kVar = null;
  2651.     mtoVisibility_Chatroom.clear(true)
  2652.     mtoFlexyAttr.clear(true)
  2653.  
  2654.     
  2655.  
  2656.     for (const elem of document.querySelectorAll(
  2657.       ['ytd-expander[tabview-info-expander]'].join(', ')
  2658.       )) {
  2659.         elem.removeAttribute('tabview-info-expander');
  2660.     }
  2661.  
  2662.     
  2663.     mtoMutation_body.clear(true)
  2664.     mtoMutation_watchFlexy.clear(true)
  2665.     //FOnce.mtf_checkFlexy = null;
  2666.     //FOnce.mtf_initalAttr_comments = null;
  2667.     //FOnce.mtf_initalAttr_playlist = null;
  2668.     //FOnce.mtf_initalAttr_chatroom = null;
  2669.     //FOnce.mtf_initalAttr_engagement_panel = null;
  2670.     //FOnce.mtf_advancedComments = null;
  2671.     //FOnce.mtf_checkDescriptionLoaded = null;
  2672.     //FOnce.mtf_forceCheckLiveVideo = null;
  2673.     Q.mtf_chatBlockQ = null;
  2674.  
  2675.  
  2676.     mtoInterval = mtoInterval1;
  2677.  
  2678.   }
  2679.  
  2680.   let comments_section_loaded_elm = null;
  2681.  
  2682.  
  2683.  
  2684.   function getTabsHTML() {
  2685.  
  2686.     const sTabBtnVideos = `${svgElm(16,16,298,298,svgVideos)}<span>Videos</span>`
  2687.     const sTabBtnInfo = `${svgElm(16,16,23.625,23.625,svgInfo)}<span>Info</span>`
  2688.     const sTabBtnPlayList = `${svgElm(16,16,426.667,426.667,svgPlayList)}<span>Playlist</span>`
  2689.  
  2690.     let str1 = `
  2691.         <paper-ripple class="style-scope yt-icon-button">
  2692.             <div id="background" class="style-scope paper-ripple" style="opacity:0;"></div>
  2693.             <div id="waves" class="style-scope paper-ripple"></div>
  2694.         </paper-ripple>
  2695.         `;
  2696.  
  2697.     const str_tabs = [
  2698.             `<a id="tab-btn1" data-name="info" userscript-tab-content="#tab-info" class="tab-btn">${sTabBtnInfo}${str1}</a>`,
  2699.             `<a id="tab-btn3" userscript-tab-content="#tab-comments" data-name="comments" class="tab-btn">${svgElm(16,16,60,60,svgComments)}<span id="tab3-txt-loader"></span>${str1}</a>`,
  2700.             `<a id="tab-btn4" userscript-tab-content="#tab-videos" data-name="videos" class="tab-btn">${sTabBtnVideos}${str1}</a>`,
  2701.             `<a id="tab-btn5" userscript-tab-content="#tab-list" class="tab-btn">${sTabBtnPlayList}${str1}</a>`
  2702.         ].join('')
  2703.  
  2704.     let addHTML = `
  2705.         <div id="right-tabs">
  2706.             <header>
  2707.                 <div id="material-tabs">
  2708.                     ${str_tabs}
  2709.                 </div>
  2710.             </header>
  2711.             <div class="tab-content">
  2712.                 <div id="tab-info" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2713.                 <div id="tab-comments" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2714.                 <div id="tab-videos" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2715.                 <div id="tab-list" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2716.             </div>
  2717.         </div>
  2718.         `;
  2719.  
  2720.     return addHTML
  2721.  
  2722.   }
  2723.  
  2724.  
  2725.   function injection_script_1() {
  2726.  
  2727.     document.addEventListener('userscript-call-dom-func', function (evt) {
  2728.   
  2729.       if (!evt || !evt.target || !evt.detail) return;
  2730.       let dom = evt.target;
  2731.   
  2732.       let { property, args } = evt.detail;
  2733.       if (!property) return;
  2734.       let f = dom[property];
  2735.       if (typeof f != 'function') return;
  2736.   
  2737.       if (args && args.length > 0) f.apply(dom, args);
  2738.       else f.call(dom);
  2739.   
  2740.     }, true)
  2741.     /*
  2742.   
  2743.     document.addEventListener('userscript-call-dom-value', function(evt) {
  2744.   
  2745.         if (!evt || !evt.target || !evt.detail) return;
  2746.         let dom = evt.target;
  2747.    
  2748.         let { property, args } = evt.detail;
  2749.         if (!property) return;
  2750.         dom[property] = args;
  2751.    
  2752.       }, true)
  2753.   
  2754.   */
  2755.     document.addEventListener('userscript-call-dom-func-stacked', function (evt) {
  2756.   
  2757.       if (!evt || !evt.target || !evt.detail) return;
  2758.       let document = evt.target;
  2759.   
  2760.       let { selector, property, args } = evt.detail;
  2761.       if (!selector || !property) return;
  2762.       let elements = document.querySelectorAll(selector);
  2763.       for (const element of elements) {
  2764.         let f = element[property];
  2765.         if (typeof f != 'function') return;
  2766.         if (args && args.length > 0) f.apply(element, args);
  2767.         else f.call(element);
  2768.       }
  2769.   
  2770.     }, false)
  2771.     /*
  2772.     document.addEventListener('userscript-call-dom-value-stacked', function(evt) {
  2773.   
  2774.         if (!evt || !evt.target || !evt.detail) return;
  2775.         let document = evt.target;
  2776.   
  2777.         let { selector, property, args } = evt.detail;
  2778.         if (!selector||!property) return;
  2779.         let elements = document.querySelectorAll(selector);
  2780.         for(const element of elements){
  2781.             element[property] = args;
  2782.         }
  2783.   
  2784.       }, false)
  2785.   
  2786.       document.addEventListener('userscript-call-dom-const-stacked', function(evt) {
  2787.   
  2788.         if (!evt || !evt.target || !evt.detail) return;
  2789.         let document = evt.target;
  2790.   
  2791.         let { selector, property, args } = evt.detail;
  2792.         if (!selector||!property) return;
  2793.         let elements = document.querySelectorAll(selector);
  2794.         const singleConfig = {
  2795.             get(){return args;},
  2796.             set(nv){},
  2797.             enumerable: true,
  2798.             configurable: true
  2799.           }
  2800.           console.log(453,elements)
  2801.         for(const element of elements){
  2802.             Object.defineProperty(element, property, singleConfig );
  2803.         }
  2804.   
  2805.       }, false)
  2806.       */
  2807.   
  2808.   
  2809.     let s1 = Symbol();
  2810.     //let s2 = Symbol();
  2811.   
  2812.     // note: after content expanded, resizing window will casue the "collapse" feature disappears.
  2813.     // this.$.content.scrollHeight>this.collapsedHeight  is used for recomputeOnResize = true 
  2814.     //let f1= function(){this.canToggle=!this.recomputeOnResize&&this.shouldUseNumberOfLines?this.alwaysToggleable||this.$.content.offsetHeight<this.$.content.scrollHeight:this.alwaysToggleable||this.$.content.scrollHeight>this.collapsedHeight};
  2815.     // new browser - 84>80 would not lead to line clamp [as using -webkit-line-clamp]
  2816.     // this.$.content.offsetHeight<this.$.content.scrollHeight is not working for collapsed content
  2817.   
  2818.     let f1 = function () { this.canToggle = this.shouldUseNumberOfLines && (this.alwaysCollapsed || this.collapsed) ? this.alwaysToggleable || this.$.content.offsetHeight < this.$.content.scrollHeight : this.alwaysToggleable || this.$.content.scrollHeight > this.collapsedHeight };
  2819.   
  2820.     let insObserver = null;
  2821.     if (window.IntersectionObserver) {
  2822.   
  2823.       insObserver = new IntersectionObserver(function (entries, observer) {
  2824.         let count = 0
  2825.         for (const entry of entries) {
  2826.           if (entry.isIntersecting && ++count) entry.target.calculateCanCollapse();
  2827.         }
  2828.       }, {
  2829.         threshold: [0]
  2830.       })
  2831.   
  2832.   
  2833.     }
  2834.     Object.defineProperty(HTMLElement.prototype, 'recomputeOnResize', {
  2835.       get() {
  2836.         if (this.calculateCanCollapse !== f1) {
  2837.           this.calculateCanCollapse = f1
  2838.           if (insObserver) insObserver.observe(this)
  2839.         }
  2840.         return this[s1];
  2841.       },
  2842.       set(nv) {
  2843.         if (this.calculateCanCollapse !== f1) {
  2844.           this.calculateCanCollapse = f1
  2845.           if (insObserver) insObserver.observe(this)
  2846.         }
  2847.         if (nv === false) nv = true;
  2848.         this[s1] = nv;
  2849.       },
  2850.       enumerable: false,
  2851.       configurable: true
  2852.     });
  2853.   
  2854.   
  2855.     let calledOnce = false;
  2856.   
  2857.     document.documentElement.addEventListener('engagement-panel-genius-lyrics', function () {
  2858.   
  2859.       function getEPC(ep) {
  2860.   
  2861.         if (!ep) return null;
  2862.         let epc = ep.querySelector('#content');
  2863.         if (!epc) return null;
  2864.   
  2865.         let epc1 = epc.querySelector('ytd-ads-engagement-panel-content-renderer #content')
  2866.         let epc2 = epc.querySelector('ytd-ads-engagement-panel-content-renderer')
  2867.   
  2868.         return epc1 || epc2 || epc;
  2869.   
  2870.       }
  2871.   
  2872.       if (calledOnce) return;
  2873.       calledOnce = true
  2874.   
  2875.   
  2876.       // ENGAGEMENT_PANEL_VISIBILITY_EXPANDED
  2877.  
  2878.       function createPanel(){
  2879.  
  2880.  
  2881.  
  2882.         /** @type {HTMLElement} */
  2883.         let newPanel = ytdFlexyElm.createComponent_({
  2884.           "component": "ytd-engagement-panel-section-list-renderer",
  2885.           "params": {
  2886.             "isWatch": true
  2887.           }
  2888.         }, "ytd-engagement-panel-section-list-renderer", true);
  2889.   
  2890.         newPanel.data = {
  2891.           "panelIdentifier": "engagement-panel-genius-transcript",
  2892.           "header": {
  2893.             "engagementPanelTitleHeaderRenderer": {
  2894.               "title": {
  2895.                 "runs": [
  2896.                   {
  2897.                     "text": "Genius Lyrics"
  2898.                   }
  2899.                 ]
  2900.               },
  2901.               "visibilityButton": {
  2902.                 "buttonRenderer": {
  2903.                   "icon": {
  2904.                     "iconType": "CLOSE"
  2905.                   },
  2906.                   "accessibility": {
  2907.                     "label": "Close Genius Lyrics"
  2908.                   },
  2909.                   "accessibilityData": {
  2910.                     "accessibilityData": {
  2911.                       "label": "Close Genius Lyrics"
  2912.                     }
  2913.                   },
  2914.                   "command": {
  2915.                     "changeEngagementPanelVisibilityAction": {
  2916.                       "targetId": "engagement-panel-genius-transcript",
  2917.                       "visibility": "ENGAGEMENT_PANEL_VISIBILITY_HIDDEN"
  2918.                     }
  2919.                   }
  2920.                 }
  2921.               }
  2922.             }
  2923.           },
  2924.           "content": {
  2925.             "adsEngagementPanelContentRenderer": {
  2926.             //"engagementPanelGeniusTranscriptRenderer":{
  2927.   
  2928.             }
  2929.           },
  2930.           "targetId": "engagement-panel-genius-transcript",
  2931.           "visibility": "ENGAGEMENT_PANEL_VISIBILITY_HIDDEN",
  2932.           "loggingDirectives": {
  2933.           }
  2934.         }
  2935.   
  2936.         newPanel.classList.add('style-scope','ytd-watch-flexy')
  2937.   
  2938.         ytdFlexyElm.querySelector('#panels').appendChild(newPanel)
  2939.  
  2940.         return newPanel;
  2941.  
  2942.  
  2943.       }
  2944.   
  2945.       let count = 0;
  2946.       setTimeout(function $f() {
  2947.   
  2948.         if (++count > 30) return;
  2949.         let ytdFlexyElm = document.querySelector('ytd-watch-flexy[tabview-selection]');
  2950.         if (!ytdFlexyElm) return setTimeout($f, 100);
  2951.   
  2952.         
  2953.   
  2954.         function closeBtn() {
  2955.           let hideBtns = null;
  2956.           if (hideBtns = document.querySelectorAll('#lyricscontainer > .lyricsnavbar > a')) {
  2957.             for (const hideBtn of hideBtns) {
  2958.               if (/\bhide\b/i.test(hideBtn.textContent)) return hideBtn;
  2959.             }
  2960.           }
  2961.         }
  2962.  
  2963.         let visObserver = new MutationObserver(function (mutations, observer) {
  2964.   
  2965.           if (!mutations || !mutations[0]) return;
  2966.           let panel = mutations[0].target;
  2967.           if (!panel) return;
  2968.           //console.log(panel)
  2969.           setTimeout(function () {
  2970.             if (panel.getAttribute('visibility') === 'ENGAGEMENT_PANEL_VISIBILITY_HIDDEN') {
  2971.               let hideBtn = closeBtn();
  2972.               if (hideBtn) hideBtn.dispatchEvent(new Event("click"));
  2973.             }
  2974.           }, 22);
  2975.   
  2976.         })
  2977.   
  2978.   
  2979.         new MutationObserver(function () {
  2980.           let panel = document.querySelector('ytd-watch-flexy ytd-engagement-panel-section-list-renderer[target-id="engagement-panel-genius-transcript"]')
  2981.           if (panel) {
  2982.             let lyricscontainer = document.querySelector('body > #lyricscontainer')
  2983.             if (!lyricscontainer && panel.getAttribute('visibility', 'ENGAGEMENT_PANEL_VISIBILITY_EXPANDED')) {
  2984.               panel.setAttribute('visibility', 'ENGAGEMENT_PANEL_VISIBILITY_HIDDEN')
  2985.             }
  2986.           }
  2987.         }).observe(document.body, {
  2988.           childList: true
  2989.         })
  2990.   
  2991.         setInterval(function () {
  2992.  
  2993.  
  2994.           if(!document.querySelector('ytd-watch-flexy ytd-engagement-panel-section-list-renderer[target-id="engagement-panel-genius-transcript"]')){
  2995.             let newPanel = createPanel();
  2996.  
  2997.             visObserver.observe(newPanel, {
  2998.               attributes: true
  2999.             })
  3000.           }
  3001.  
  3002.  
  3003.           let elm = null;
  3004.           if (elm = document.querySelector('body>#lyricscontainer>#lyricsiframe')) {
  3005.  
  3006.             let panel = document.querySelector('ytd-watch-flexy ytd-engagement-panel-section-list-renderer[target-id="engagement-panel-genius-transcript"]')
  3007.             if(!panel) return;
  3008.             let epc = getEPC(panel);
  3009.             if(!epc) return;
  3010.             epc.innerHTML = '';
  3011.             epc.appendChild(elm)
  3012.             panel.setAttribute('visibility', 'ENGAGEMENT_PANEL_VISIBILITY_EXPANDED')
  3013.           }
  3014.         }, 400)
  3015.   
  3016.       }, 100)
  3017.   
  3018.     })
  3019.     document.documentElement.setAttribute('w-engagement-panel-genius-lyrics', '')
  3020.   
  3021.     function removeChildren(cssSelector, parentNode) {
  3022.       let elements = parentNode.querySelectorAll(cssSelector);
  3023.       let fragment = document.createDocumentFragment();
  3024.       fragment.textContent = ' ';
  3025.       fragment.firstChild.replaceWith(...elements);
  3026.     }
  3027.     function removeDOMs(elements) {
  3028.       let fragment = document.createDocumentFragment();
  3029.       fragment.textContent = ' ';
  3030.       fragment.firstChild.replaceWith(...elements);
  3031.     }
  3032.   
  3033.   
  3034.     function chain(elm, ...args) {
  3035.       if (!elm) return;
  3036.       for (const s of args) {
  3037.         let tmp = elm[s]
  3038.         if (!tmp) return tmp || null
  3039.         elm = tmp;
  3040.       }
  3041.       return elm;
  3042.     }
  3043.   
  3044.   
  3045.     //https://www.youtube.com/watch?v=Ud73fm4Uoq0
  3046.   
  3047.   
  3048.     function _snippetText(str) {
  3049.       return str.replace(/\u200b/g, '').replace(/[\xA0\x20]/g, ' ')
  3050.     }
  3051.   
  3052.     function snippetText(snippet) {
  3053.       let res = [];
  3054.       for (const s of snippet.runs) {
  3055.         res.push(_snippetText(s.text))
  3056.       }
  3057.       return res.join('\n');
  3058.     }
  3059.   
  3060.     const s7 = Symbol();
  3061.     const s8 = Symbol();
  3062.   
  3063.     function translate(initialSegments) {
  3064.   
  3065.       if (!initialSegments) return initialSegments;
  3066.   
  3067.       let res = {};
  3068.       let map = new WeakSet();
  3069.   
  3070.       let subTexts = {};
  3071.   
  3072.       for (const initialSegment of initialSegments) {
  3073.         if (!initialSegment || !initialSegment.transcriptSegmentRenderer) continue;
  3074.   
  3075.         let startMs = (+initialSegment.transcriptSegmentRenderer.startMs || 0)
  3076.         let endMs = (+initialSegment.transcriptSegmentRenderer.endMs || 0)
  3077.   
  3078.         if (startMs === endMs) {
  3079.           // effect text
  3080.           // https://www.youtube.com/watch?v=Ud73fm4Uoq0
  3081.           map.add(initialSegment)
  3082.   
  3083.           let text = snippetText(initialSegment.transcriptSegmentRenderer.snippet);
  3084.           if (!subTexts[startMs]) subTexts[startMs] = [];
  3085.           if (!subTexts[startMs].includes(text)) subTexts[startMs].push(text);
  3086.           continue;
  3087.         }
  3088.         let text = snippetText(initialSegment.transcriptSegmentRenderer.snippet);
  3089.   
  3090.   
  3091.         if (/^[\,\.\x60\x27\x22\u200b\xA0\x20\;\-]*$/.test(text)) {
  3092.           initialSegment[s8] = true;
  3093.           //effect only
  3094.           // https://www.youtube.com/watch?v=zLak0dxBKpM
  3095.           map.add(initialSegment)
  3096.           continue;
  3097.         }
  3098.   
  3099.         if (!res[text]) res[text] = [];
  3100.         res[text].push({
  3101.           startMs,
  3102.           endMs,
  3103.           initialSegment
  3104.         })
  3105.   
  3106.       }
  3107.   
  3108.       function trim2(str) {
  3109.         return str.replace(/^[\xA0\u200b\s\n\t]+|[\xA0\u200b\s\n\t]+$/g, '');
  3110.       }
  3111.   
  3112.       function ns2(str) {
  3113.         return str.replace(/[\xA0\u200b\s\n\t]+/g, '');
  3114.       }
  3115.   
  3116.       for (const text of Object.keys(res)) {
  3117.   
  3118.         let lastEntry = null
  3119.         for (const entry of res[text]) {
  3120.   
  3121.           if (lastEntry && entry) {
  3122.             if (entry.startMs - lastEntry.endMs < 5 && entry.startMs >= lastEntry.endMs) {
  3123.   
  3124.               lastEntry.endMs = entry.endMs
  3125.               lastEntry.initialSegment.transcriptSegmentRenderer.endMs = entry.initialSegment.transcriptSegmentRenderer.endMs
  3126.               map.add(entry.initialSegment);
  3127.   
  3128.               continue;
  3129.             }
  3130.           }
  3131.   
  3132.           lastEntry = entry
  3133.   
  3134.         }
  3135.       }
  3136.   
  3137.   
  3138.   
  3139.   
  3140.       let fRes = initialSegments.filter(m => !map.has(m));
  3141.   
  3142.   
  3143.       for (const segment of fRes) {
  3144.         let main_startMs = (+segment.transcriptSegmentRenderer.startMs || 0)
  3145.         let main_endMs = (+segment.transcriptSegmentRenderer.endMs || 0)
  3146.         segment.transcriptSegmentRenderer[s7] = {};
  3147.         for (const initialSegment of initialSegments) {
  3148.           if (initialSegment[s8]) continue;
  3149.   
  3150.           let startMs = (+initialSegment.transcriptSegmentRenderer.startMs || 0)
  3151.           let endMs = (+initialSegment.transcriptSegmentRenderer.endMs || 0)
  3152.   
  3153.           if (startMs >= main_startMs && endMs <= main_endMs) {
  3154.             let mt = snippetText(initialSegment.transcriptSegmentRenderer.snippet);
  3155.             segment.transcriptSegmentRenderer[s7][mt] = (segment.transcriptSegmentRenderer[s7][mt] || 0) + 1 + Math.abs(endMs - startMs);
  3156.           }
  3157.   
  3158.         }
  3159.   
  3160.       }
  3161.   
  3162.   
  3163.       for (const segment of fRes) {
  3164.   
  3165.         let snippet = segment.transcriptSegmentRenderer.snippet
  3166.   
  3167.         let main_str = trim2(_snippetText(snippet.runs[0].text));
  3168.   
  3169.         snippet.runs[0].text = main_str
  3170.   
  3171.         if (snippet.runs.length > 1) continue;  // skip multi lines
  3172.   
  3173.   
  3174.         let obj = segment.transcriptSegmentRenderer[s7]
  3175.   
  3176.         let rg = Object.keys(obj)
  3177.   
  3178.         if (rg.length <= 1) continue; // no second line
  3179.   
  3180.         rg = rg.map(k => ({ str: k, count: obj[k] }))
  3181.         rg.sort((a, b) => b.count - a.count)
  3182.   
  3183.         if (rg[1].count > 4 && ns2(rg[1].str) !== ns2(rg[0].str) && rg[1].count > rg.slice(2).map(e => e.count).reduce((a, b) => a + b, 0)) {
  3184.   
  3185.           let a = trim2(rg[0].str)
  3186.           let b = main_str
  3187.   
  3188.           //console.log(452, a,b,a===b)
  3189.           if (a === b) snippet.runs.push({ text: trim2(rg[1].str) })
  3190.         }
  3191.   
  3192.       }
  3193.   
  3194.   
  3195.       //console.log(fRes)
  3196.   
  3197.   
  3198.   
  3199.       //console.log(fRes)
  3200.   
  3201.       return fRes;
  3202.   
  3203.     }
  3204.   
  3205.   
  3206.   
  3207.     const s6 = Symbol();
  3208.     Object.defineProperty(customElements.get('ytd-transcript-search-panel-renderer').prototype, 'initialTranscriptsRenderer', {
  3209.       get() {
  3210.   
  3211.         return this.__$$initialTranscriptsRenderer$$__
  3212.       },
  3213.       set(nv) {
  3214.         try {
  3215.   
  3216.           if (nv && nv.initialSegments && !nv.initialSegments[s6]) {
  3217.             nv[s6] = true;
  3218.             //console.log(343,JSON.parse(JSON.stringify(nv)), nv.initialSegments.length)
  3219.             nv.initialSegments = translate(nv.initialSegments)
  3220.             //console.log(344,nv, nv.initialSegments.length)
  3221.           }
  3222.   
  3223.         } catch (e) {
  3224.           console.log('Tabview Error', e)
  3225.         }
  3226.         this.__$$initialTranscriptsRenderer$$__ = nv;
  3227.       }
  3228.     })
  3229.   
  3230.   
  3231.   
  3232.     let afm = 0;
  3233.     let afArg = null;
  3234.     const g_postToContentWindow = function () {
  3235.       if (arguments.length === 1 && "yt-player-video-progress" in arguments[0]) {
  3236.   
  3237.         afArg = [...arguments];
  3238.         afm++;
  3239.         if (afm === 1) {
  3240.   
  3241.   
  3242.           requestAnimationFrame(() => {
  3243.             afm = 0;
  3244.             this.__$$postToContentWindow$$__.apply(this, afArg || arguments)
  3245.           })
  3246.         }
  3247.   
  3248.       } else {
  3249.         this.__$$postToContentWindow$$__.apply(this, arguments)
  3250.       }
  3251.     }
  3252.   
  3253.     setInterval(function () {
  3254.   
  3255.       let tmp;
  3256.       tmp = document.querySelector('ytd-live-chat-frame#chat');
  3257.       if (tmp && !tmp.__$$postToContentWindow$$__ && typeof tmp.postToContentWindow == 'function' && tmp.postToContentWindow !== g_postToContentWindow) {
  3258.         tmp.__$$postToContentWindow$$__ = tmp.postToContentWindow
  3259.         tmp.postToContentWindow = g_postToContentWindow
  3260.       }
  3261.   
  3262.   
  3263.   
  3264.     }, 150)
  3265.   
  3266.     document.addEventListener('yt-expander-less-tapped', function (evt) {
  3267.   
  3268.       // including reply of comments;
  3269.       // fix scrollTop when "show less" is tapped
  3270.   
  3271.       if (!evt || !evt.target) return;
  3272.       /** @type {HTMLElement} */
  3273.       let elm = evt.target;
  3274.       if (elm.matches('#tab-comments #contents.style-scope.ytd-item-section-renderer > ytd-comment-thread-renderer.style-scope.ytd-item-section-renderer ytd-expander#expander[max-number-of-lines]')) {
  3275.         //setTimeout(()=>{
  3276.         let cmRender = elm.closest('ytd-comment-renderer')
  3277.         let tabComments = cmRender.closest('#tab-comments')
  3278.         let cmRenderRect = cmRender.getBoundingClientRect()
  3279.         let tabCommentsRect = tabComments.getBoundingClientRect()
  3280.         let eTop = cmRenderRect.top
  3281.         let cTop = tabCommentsRect.top
  3282.         
  3283.         if (cTop - eTop > 0) {
  3284.           tabComments.scrollTop -= cTop - eTop  + Math.max(cmRenderRect.left - tabCommentsRect.left, 0)
  3285.           //note: {cmRenderRect.left - tabCommentsRect.left} is larger for reply of comments
  3286.         }
  3287.         //},30)
  3288.   
  3289.       }
  3290.   
  3291.     }, true)
  3292.   
  3293.   
  3294.   }
  3295.   
  3296.  
  3297.  
  3298.   function onVideoChange() {
  3299.     // for popstate & next video
  3300.  
  3301.     newVideoPageCheck();
  3302.  
  3303.     scheduledCommentRefresh=true;
  3304.     let comments = document.querySelector('ytd-comments#comments')
  3305.     
  3306.     if(!deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0 && comments.hasAttribute('hidden')){
  3307.  
  3308.       scheduledCommentRefresh=false; 
  3309.       
  3310.       // comment tab btn - hide by timer in attribute change
  3311.       resetCommentSection();
  3312.     }
  3313.  
  3314.     mtf_forceCheckLiveVideo_disable = 0
  3315.     mtc_store= Date.now()+3870
  3316.  
  3317.     if (deferredVarYTDHidden) {  // reset info when hidden
  3318.       
  3319.       resetCommentSection();
  3320.     }else{
  3321.       checkVisibleEngagementPanel();
  3322.       atChange(); // in case no mutation occurance
  3323.     }
  3324.  
  3325.  
  3326.  
  3327.   }
  3328.  
  3329.   function onNavigationEnd(evt) {
  3330.     
  3331.     newVideoPageCheck(); // required for init
  3332.  
  3333.     let mRet =
  3334.       (/^https?\:\/\/(\w+\.)*youtube\.com\/watch\?(\w+\=[^\/\?\&]+\&|\w+\=?\&)*v=[\w\-\_]+/.test(window.location.href) ? 1 : 0) +
  3335.       (document.querySelector('ytd-watch-flexy[tabview-selection]') ? 2 : 0);
  3336.  
  3337.     if (mRet === 1) {
  3338.  
  3339.       document.addEventListener('loadedmetadata', function(evt) {
  3340.         if (evt.target.matches('video[tabview-mainvideo]')) {
  3341.           setTimeout(onVideoChange, 30)
  3342.         }
  3343.       }, true)
  3344.  
  3345.       pluginUnhook(); // in case not triggered by popstate - say mini playing
  3346.  
  3347.       let timeout = 4; // max. 4 animation frames
  3348.  
  3349.       let tf = () => {
  3350.  
  3351.         if (--timeout > 0 && !document.querySelector('#player video')) return requestAnimationFrame(tf);
  3352.  
  3353.         if (!document.querySelector('script#userscript-tabview-injection-1')) {
  3354.  
  3355.           if (isMyScriptInChromeRuntime()){
  3356.  
  3357.             addScriptByURL(window.chrome.runtime.getURL('js/injection_script_1.js')).id = 'userscript-tabview-injection-1';
  3358.           }
  3359.           else{
  3360.  
  3361.             let injection_script = GM_getResourceText("injectionJS1")
  3362.             addScript(`${injection_script}`).id = 'userscript-tabview-injection-1';
  3363.           }
  3364.         }
  3365.  
  3366.         let ytdFlexyElm = document.querySelector('ytd-watch-flexy')
  3367.  
  3368.         if(!ytdFlexyElm) return;
  3369.  
  3370.  
  3371.         scriptEnable = true;
  3372.         scriptEC++;
  3373.  
  3374.         no_fix_contents_until = 0;
  3375.         no_fix_playlist_until = 0;
  3376.  
  3377.         ytdFlexy = mWeakRef(ytdFlexyElm)
  3378.  
  3379.         let timeoutR_findRelated = new Timeout();
  3380.         timeoutR_findRelated.set(function() {
  3381.           let ytdFlexyElm = kRef(ytdFlexy);
  3382.           if(!ytdFlexyElm) return true;
  3383.           let related = ytdFlexyElm.querySelector("#related");
  3384.           if (!related) return true;
  3385.           foundRelated(related);
  3386.         }, 100, 10)
  3387.  
  3388.         function foundRelated(related) {
  3389.           let promise = Promise.resolve();
  3390.           if (!document.querySelector("#right-tabs")) {
  3391.             promise = promise.then(() => {
  3392.               $(getTabsHTML()).insertBefore(related).attr('data-dom-created-by-tabview-youtube', scriptVersionForExternal);
  3393.             })
  3394.           }
  3395.           promise.then(runAfterTabAppended)
  3396.         }
  3397.  
  3398.         /*
  3399.         setTimeout(() => {
  3400.           for (const s of document.querySelectorAll('#right-tabs [userscript-scrollbar-render]')) {
  3401.             Promise.resolve(s).then(s => {
  3402.               if (s && s.scrollTop > 0) s.scrollTop = 0;
  3403.               let child = s.firstElementChild;
  3404.               if (child && child.scrollTop > 0) child.scrollTop = 0;
  3405.             });
  3406.           }
  3407.         }, 90)
  3408.         */
  3409.  
  3410.  
  3411.       }
  3412.  
  3413.       tf();
  3414.  
  3415.     } else if (mRet === 3) {
  3416.  
  3417.       if(!scriptEnable) return;
  3418.  
  3419.       let elmComments = document.querySelector('ytd-comments#comments')
  3420.  
  3421.       if (elmComments) {
  3422.         nativeFunc(elmComments, "loadComments")
  3423.       }
  3424.  
  3425.     } else if (mRet === 0) {
  3426.       
  3427.  
  3428.       pluginUnhook(); // in case not triggered by popstate - say mini playing
  3429.  
  3430.     }
  3431.  
  3432.     if(mRet & 1){
  3433.       
  3434.       setTimeout(()=>{
  3435.         
  3436.         Q.mutationTarget=null;
  3437.         atChange(); // in case no mutation occurance
  3438.         FP.mtf_attrComments()
  3439.       },160);
  3440.         
  3441.     }
  3442.  
  3443.   }
  3444.  
  3445.  
  3446.   function setToActiveTab(defaultTab) {
  3447.     if (isTheater() && isWideScreenWithTwoColumns()) return;
  3448.     const jElm = document.querySelector(`a[userscript-tab-content="${switchTabActivity_lastTab}"]:not(.tab-btn-hidden)`) ||
  3449.       document.querySelector(`a[userscript-tab-content="${(defaultTab||settings.defaultTab)}"]:not(.tab-btn-hidden)`) ||
  3450.       document.querySelector("a[userscript-tab-content]:not(.tab-btn-hidden)") ||
  3451.       null;
  3452.     switchTabActivity(jElm);
  3453.     return !!jElm;
  3454.   }
  3455.  
  3456.   function getWrapper(wrapperId) {
  3457.     let $wrapper = $(`#${wrapperId}`);
  3458.     if (!$wrapper[0]) $wrapper = $(`<div id="${wrapperId}"></div>`)
  3459.     return $wrapper.first();
  3460.   }
  3461.  
  3462.   function runAfterTabAppended() {
  3463.  
  3464.     document.documentElement.setAttribute('plugin-tabview-youtube', '')
  3465.  
  3466.     const ytdFlexyElm = kRef(ytdFlexy)
  3467.     if(!ytdFlexyElm) return;
  3468.     if (!ytdFlexyElm.hasAttribute('tabview-selection')) ytdFlexyElm.setAttribute('tabview-selection', '')
  3469.  
  3470.     
  3471.  
  3472.     
  3473.     //console.log('unc02')
  3474.  
  3475.     // append the next videos 
  3476.     // it exists as "related" is already here
  3477.     fixTabs();
  3478.  
  3479.     // just switch to the default tab
  3480.     setToActiveTab();
  3481.  
  3482.  
  3483.     prepareTabBtn();
  3484.  
  3485.  
  3486.     // append the detailed meta contents to the tab-info
  3487.     // ** FOnce.mtf_checkDescriptionLoaded = FP.mtf_checkDescriptionLoaded;
  3488.     // ** if (Q.mutationTarget === null) $callOnceAsync('mtf_checkDescriptionLoaded');
  3489.  
  3490.     // force window scroll when #continuations is first detected and #comments still [hidden]
  3491.     //FOnce.mtf_advancedComments = FP.mtf_advancedComments;
  3492.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_advancedComments');
  3493.  
  3494.     // use video player's element to detect the live-chat situation (no commenting section)
  3495.     // this would be very useful if the live chat is collapsed, i.e. iframe has no indication on the where it is live or replay
  3496.     //FOnce.mtf_forceCheckLiveVideo = FP.mtf_forceCheckLiveVideo;
  3497.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_forceCheckLiveVideo');
  3498.     //mtf_forceCheckLiveVideo();
  3499.  
  3500.  
  3501.     // Attr Mutation Observer - #playlist - hidden
  3502.     //clearMutationObserver(mtoVs, 'mtoVisibility_Playlist')
  3503.     // Attr Mutation Observer callback - #playlist - hidden
  3504.  
  3505.     // pending for #playlist and set Attribute Observer
  3506.     // ** FOnce.mtf_initalAttr_playlist = FP.mtf_initalAttr_playlist
  3507.     // ** if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_playlist');
  3508.  
  3509.     // Attr Mutation Observer - ytd-comments#comments - hidden
  3510.     //clearMutationObserver(mtoVs, 'mtoVisibility_Comments')
  3511.     // Attr Mutation Observer callback - ytd-comments#comments - hidden
  3512.  
  3513.     // pending for #comments and set Attribute Observer
  3514.     // ** FOnce.mtf_initalAttr_comments = FP.mtf_initalAttr_comments;
  3515.     // ** if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_comments');
  3516.  
  3517.  
  3518.     //clearMutationObserver(mtoVs, 'mtoVisibility_Chatroom');
  3519.     //FOnce.mtf_initalAttr_chatroom = FP.mtf_initalAttr_chatroom
  3520.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_chatroom');
  3521.  
  3522.     // clearMutationObserver(mtoVs, 'mtoVisibility_EngagementPanel');
  3523.     // for (const engagement_panel of document.querySelectorAll('ytd-watch-flexy ytd-engagement-panel-section-list-renderer:not([tabview-attr-checked])')) {
  3524.     //   engagement_panel.removeAttribute('tabview-attr-checked');
  3525.     // }
  3526.     //FOnce.mtf_initalAttr_engagement_panel = FP.mtf_initalAttr_engagement_panel
  3527.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_engagement_panel');
  3528.  
  3529.  
  3530.     mtoFlexyAttr.clear(true)
  3531.     mtf_checkFlexy()
  3532.  
  3533.  
  3534.     document.querySelector("#right-tabs .tab-content").addEventListener('scroll', makeBodyScrollByEvt, true);
  3535.  
  3536.  
  3537.     Q.addP = 0;
  3538.     Q.removeP = 0;
  3539.     Q.mutationTarget = null;
  3540.  
  3541.     Q.mtoNav_requestNo = 0;
  3542.  
  3543.  
  3544.     mtoMutation_watchFlexy.bindElement(ytdFlexyElm, {
  3545.       childList: true,
  3546.       subtree: true,
  3547.       attributes: false
  3548.     })
  3549.  
  3550.     // for automcomplete plugin or other userscript plugins
  3551.     // document.body for Firefox >= 60
  3552.     mtoMutation_body.bindElement(document.querySelector('body'), {
  3553.       childList: true,
  3554.       subtree: false,
  3555.       attributes: false
  3556.     })
  3557.  
  3558.  
  3559.     regularCheck(1, 0, null);
  3560.  
  3561.     
  3562.  
  3563.  
  3564.  
  3565.   }
  3566.  
  3567.  
  3568.   function fetchCommentsFinished() {
  3569.     let ytdFlexyElm = kRef(ytdFlexy);
  3570.     if (!scriptEnable || !ytdFlexyElm) return;
  3571.     if(mtf_forceCheckLiveVideo_disable===2) return;
  3572.     akAttr(ytdFlexyElm, 'tabview-youtube-comments', false, 'LS')
  3573.   }
  3574.  
  3575.   function setCommentSection(value) {
  3576.  
  3577.     Q.comments_section_loaded = value;
  3578.  
  3579.     if (value === 0) {
  3580.       sect_lastUpdate = 0;
  3581.       comments_section_loaded_elm = null;
  3582.     }
  3583.  
  3584.   }
  3585.  
  3586.   function resetCommentSection(){
  3587.     
  3588.  
  3589.     let tab_btn = document.querySelector('.tab-btn[userscript-tab-content="#tab-comments"]')
  3590.  
  3591.  
  3592.     if(tab_btn){
  3593.  
  3594.       let span = tab_btn.querySelector('span#tab3-txt-loader');
  3595.  
  3596.       tab_btn.removeAttribute('loaded-comment')
  3597.       tab_btn.classList.remove('tab-btn-hidden')
  3598.         
  3599.       if(span){
  3600.         span.textContent='';
  3601.       }
  3602.     }
  3603.  
  3604.  
  3605.     setCommentSection(0);
  3606.  
  3607.  
  3608.   }
  3609.  
  3610.   function _disableComments() {
  3611.     
  3612.     //requestingComments = null;
  3613.     mtc_cid && timeline.clearInterval(mtc_cid)
  3614.     mtc_cid=0;
  3615.  
  3616.     if (!scriptEnable) return;
  3617.     let cssElm = kRef(ytdFlexy);
  3618.     if (!cssElm) return;
  3619.  
  3620.     mtoInterval = mtoInterval2;
  3621.  
  3622.     if(Q.comments_section_loaded>0) return; //already displayed / disabled
  3623.  
  3624.     scheduledCommentRefresh=false;
  3625.     setCommentSection(2);
  3626.  
  3627.     comments_section_loaded_elm = mWeakRef(document.querySelector('ytd-comments#comments div#contents') || null)
  3628.  
  3629.     let tabBtn = document.querySelector('.tab-btn[userscript-tab-content="#tab-comments"]');
  3630.     if(tabBtn) {
  3631.       tabBtn.removeAttribute('loaded-comment')
  3632.       if (!tabBtn.classList.contains('tab-btn-hidden')) {
  3633.         hideTabBtn(tabBtn)
  3634.       }
  3635.     }
  3636.  
  3637.     akAttr(cssElm, 'tabview-youtube-comments', true, 'D');
  3638.  
  3639.  
  3640.   }
  3641.  
  3642.  
  3643.  
  3644.  
  3645.   let layoutStatusMutex = new Mutex();
  3646.  
  3647.   function forceDisplayChatReplay() {
  3648.     let items = chatFrameElement('yt-live-chat-item-list-renderer #items');
  3649.     if (items && items.childElementCount !== 0) return;
  3650.  
  3651.     let ytd_player = document.querySelector('ytd-player#ytd-player');
  3652.     if (!ytd_player) return;
  3653.     let videoElm = ytd_player.querySelector('video');
  3654.     if (!videoElm) return;
  3655.  
  3656.     let video = videoElm;
  3657.     if (videoElm && video.currentTime > 0 && !video.ended && video.readyState > video.HAVE_CURRENT_DATA) {
  3658.       let chat = document.querySelector('ytd-live-chat-frame#chat');
  3659.       if (chat) {
  3660.         nativeFunc(chat, "postToContentWindow", [{ "yt-player-video-progress": videoElm.currentTime }])
  3661.       }
  3662.     }
  3663.  
  3664.   }
  3665.  
  3666.  
  3667.  
  3668.   function runAfterExpandChat() {
  3669.  
  3670.  
  3671.     new Promise(resolve => {
  3672.  
  3673.       let chatFrame_st = Date.now();
  3674.       let cid_chatFrameCheck = 0;
  3675.  
  3676.       let sEF = new ScriptEF();
  3677.       cid_chatFrameCheck = setInterval(() => {
  3678.         if (!sEF.isValid()) return cid_chatFrameCheck = clearInterval(cid_chatFrameCheck);
  3679.         let cDoc = chatFrameContentDocument();
  3680.         if (cDoc) {
  3681.           cid_chatFrameCheck = clearInterval(cid_chatFrameCheck);
  3682.           resolve();
  3683.         } else if (!scriptEnable || !isChatExpand() || Date.now() - chatFrame_st > 6750) {
  3684.           cid_chatFrameCheck = clearInterval(cid_chatFrameCheck);
  3685.         }
  3686.       }, 60);
  3687.  
  3688.  
  3689.     }).then(() => new Promise(resolve => {
  3690.  
  3691.       let timeoutR_ChatAppReady = new Timeout();
  3692.       timeoutR_ChatAppReady.set(() => {
  3693.  
  3694.         if (!scriptEnable || !isChatExpand()) return false;
  3695.         let app = chatFrameElement('yt-live-chat-app');
  3696.         if (!app) return true;
  3697.  
  3698.         timeline.setTimeout(() => resolve(app), 40)
  3699.  
  3700.       }, 40, 150); //40*150 = 6000ms = 6s;
  3701.  
  3702.     })).then(app => {
  3703.  
  3704.  
  3705.       let cDoc = app.ownerDocument;
  3706.  
  3707.       if (!scriptEnable || !isChatExpand()) return;
  3708.       addStyle(`      
  3709.                 body #input-panel.yt-live-chat-renderer::after {
  3710.                     background: transparent;
  3711.                 }
  3712.                 #items.yt-live-chat-item-list-renderer{
  3713.                     contain: content;
  3714.                 }
  3715.                 yt-live-chat-text-message-renderer{
  3716.                     contain: content;
  3717.                 }
  3718.                 #item-offset.yt-live-chat-item-list-renderer{
  3719.                     contain: content;
  3720.                 }
  3721.                 #item-scroller.yt-live-chat-item-list-renderer{
  3722.                     contain: strict;
  3723.                 }
  3724.                 img[width][height]{
  3725.                     contain: strict;
  3726.                 }
  3727.                 #item-list>yt-live-chat-item-list-renderer, #item-list>yt-live-chat-item-list-renderer>#contents{
  3728.                     contain: strict;
  3729.                 }
  3730.  
  3731.  
  3732.                 #chat.style-scope.yt-live-chat-renderer,
  3733.                 yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer,
  3734.                 #item-scroller,
  3735.                 yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer .style-scope.yt-live-chat-text-message-renderer,
  3736.                 yt-live-chat-ticker-paid-message-item-renderer
  3737.                 {
  3738.                   contain: layout paint style;
  3739.                 }
  3740.                  
  3741.                 yt-img-shadow#author-photo.style-scope{
  3742.                   contain: layout paint style;
  3743.                   content-visibility: auto;
  3744.                   contain-intrinsic-size: 24px 24px;
  3745.                 }
  3746.                  
  3747.                 #item-offset.style-scope.yt-live-chat-item-list-renderer,
  3748.                 #items.style-scope.yt-live-chat-item-list-renderer {
  3749.                   contain: layout paint;
  3750.                 }
  3751.                  
  3752.                 .style-scope.yt-live-chat-text-message-renderer {
  3753.                   cursor: default;
  3754.                 }
  3755.                  
  3756.                 #author-photo.style-scope.yt-live-chat-text-message-renderer,
  3757.                 yt-live-chat-author-chip.style-scope.yt-live-chat-text-message-renderer,
  3758.                 yt-live-chat-author-chip.style-scope.yt-live-chat-text-message-renderer ~ span#message.style-scope.yt-live-chat-text-message-renderer
  3759.                 {
  3760.                   pointer-events: none;
  3761.                 }
  3762.                  
  3763.                 span#message.style-scope.yt-live-chat-text-message-renderer > img.emoji.yt-formatted-string.style-scope.yt-live-chat-text-message-renderer{
  3764.                   contain: layout paint style;
  3765.                   cursor: default;
  3766.                   pointer-events: none;
  3767.                 }
  3768.                  
  3769.                 body yt-live-chat-app{
  3770.                   contain: size layout paint style;
  3771.                   content-visibility: auto;
  3772.                   transform: translate3d(0,0,0);
  3773.                   overflow: hidden;
  3774.                 }
  3775.                  
  3776.  
  3777.             `, cDoc.documentElement)
  3778.  
  3779.       if (cDoc.querySelector('yt-live-chat-renderer #continuations')) {
  3780.         timeline.setTimeout(() => mtf_ChatExist(), 40);
  3781.         $(document.querySelector('ytd-live-chat-frame#chat')).attr('yt-userscript-iframe-loaded', '')
  3782.       }
  3783.  
  3784.       forceDisplayChatReplay();
  3785.  
  3786.  
  3787.  
  3788.  
  3789.     })
  3790.  
  3791.   }
  3792.  
  3793.   function flexyAttr_toggleFlag(mFlag, b, flag) {
  3794.     if (b) mFlag = mFlag | flag;
  3795.     else mFlag = mFlag & ~flag;
  3796.     return mFlag;
  3797.   }
  3798.  
  3799.   function flexAttr_toLayoutStatus(nls, attributeName) {
  3800.  
  3801.     let attrElm, b, v;
  3802.     switch (attributeName) {
  3803.       case 'theater':
  3804.         nls = flexyAttr_toggleFlag(nls, isTheater(), LAYOUT_THEATER);
  3805.         break;
  3806.       case 'userscript-chat-collapsed':
  3807.       case 'userscript-chatblock':
  3808.         attrElm = kRef(ytdFlexy);
  3809.         if (hasAttribute(attrElm, 'userscript-chat-collapsed')) {
  3810.           nls = flexyAttr_toggleFlag(nls, true, LAYOUT_CHATROOM | LAYOUT_CHATROOM_COLLASPED);
  3811.         } else {
  3812.           nls = flexyAttr_toggleFlag(nls, hasAttribute(attrElm, 'userscript-chatblock'), LAYOUT_CHATROOM);
  3813.           nls = flexyAttr_toggleFlag(nls, false, LAYOUT_CHATROOM_COLLASPED);
  3814.         }
  3815.         break;
  3816.       case 'is-two-columns_':
  3817.         nls = flexyAttr_toggleFlag(nls, isWideScreenWithTwoColumns(), LAYOUT_TWO_COLUMNS);
  3818.         break;
  3819.  
  3820.       case 'tabview-selection':
  3821.         b = isNonEmptyString(kRef(ytdFlexy).getAttribute('tabview-selection'));
  3822.         nls = flexyAttr_toggleFlag(nls, b, LAYOUT_TAB_EXPANDED);
  3823.         break;
  3824.  
  3825.       case 'fullscreen':
  3826.         b = isNonEmptyString(kRef(ytdFlexy).getAttribute('fullscreen'));
  3827.         nls = flexyAttr_toggleFlag(nls, b, LAYOUT_FULLSCREEN);
  3828.         break;
  3829.  
  3830.       case 'userscript-engagement-panel':
  3831.         v = kRef(ytdFlexy).getAttribute('userscript-engagement-panel');
  3832.         b = (+v > 0)
  3833.         nls = flexyAttr_toggleFlag(nls, b, LAYOUT_ENGAGEMENT_PANEL_EXPAND);
  3834.         break;
  3835.  
  3836.     }
  3837.  
  3838.     return nls;
  3839.  
  3840.  
  3841.   }
  3842.  
  3843.   let mtf_attrFlexy = (mutations, observer) => {
  3844.  
  3845.     //attr mutation checker - $$ytdFlexyElm$$ {ytd-watch-flexy} \single
  3846.     //::attr    
  3847.     // ~ 'userscript-chat-collapsed', 'userscript-chatblock', 'theater', 'is-two-columns_', 
  3848.     // ~ 'tabview-selection', 'fullscreen', 'userscript-engagement-panel', 
  3849.     // ~ 'hidden'
  3850.  
  3851.     //console.log(15330, scriptEnable, kRef(ytdFlexy), mutations)
  3852.  
  3853.     if (!scriptEnable) return;
  3854.  
  3855.     const cssElm = kRef(ytdFlexy)
  3856.     if (!cssElm) return;
  3857.  
  3858.     if (!mutations) return;
  3859.  
  3860.     //console.log(15340)
  3861.     ytdFlexyHiddenCheck(mutations);
  3862.  
  3863.     const old_layoutStatus = wls.layoutStatus
  3864.     if (old_layoutStatus === null) return;
  3865.     let new_layoutStatus = old_layoutStatus;
  3866.  
  3867.     let checkedChat = false;
  3868.  
  3869.     for (const mutation of mutations) {
  3870.       new_layoutStatus = flexAttr_toLayoutStatus(new_layoutStatus, mutation.attributeName);
  3871.       if (mutation.attributeName == 'userscript-chat-collapsed' || mutation.attributeName == 'userscript-chatblock') {
  3872.  
  3873.         if(!checkedChat){
  3874.           checkedChat = true; // avoid double call
  3875.  
  3876.           if (cssElm.getAttribute('userscript-chatblock') === 'chat-live') {
  3877.             // assigned new attribute - "chat-live" => disable comments section
  3878.             _disableComments();
  3879.           }
  3880.  
  3881.           if (!cssElm.hasAttribute('userscript-chatblock')) {
  3882.             // might or might not collapsed before
  3883.             timeline.setTimeout(() => {
  3884.               if (!scriptEnable) return;
  3885.               //delayed call => check with the "no active focus" condition with chatroom status
  3886.               if (!isAnyActiveTab() && !isChatExpand() && !isTheater() && isWideScreenWithTwoColumns() && !isFullScreen()) {
  3887.                 setToActiveTab();
  3888.               }
  3889.             }, 240);
  3890.           }
  3891.         }
  3892.  
  3893.       }else if(mutation.attributeName == 'userscript-engagement-panel'){
  3894.         // assume any other active component such as tab content and chatroom
  3895.         
  3896.         if (+(cssElm.getAttribute('userscript-engagement-panel')||0)===0 && +mutation.oldValue>0) {
  3897.           timeline.setTimeout(() => {
  3898.             if (!scriptEnable) return;
  3899.             //delayed call => check with the "no active focus" condition with engagement panel status
  3900.             if (!isAnyActiveTab() && !isEngagementPanelExpanded() && !isTheater() && isWideScreenWithTwoColumns() && !isFullScreen()) {
  3901.               setToActiveTab();
  3902.             }
  3903.           }, 240);
  3904.         }
  3905.       }
  3906.     }
  3907.  
  3908.     if (new_layoutStatus !== old_layoutStatus) wls.layoutStatus = new_layoutStatus
  3909.  
  3910.   }
  3911.  
  3912.   const mtf_checkFlexy = () => {
  3913.     // once per $$native-ytd-watch-flexy$$ {ytd-watch-flexy} detection
  3914.  
  3915.     let ytdFlexyElm = kRef(ytdFlexy);
  3916.     if (!scriptEnable || !ytdFlexyElm) return true;
  3917.  
  3918.  
  3919.     wls.layoutStatus = null;
  3920.  
  3921.     let isFlexyHidden = (deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden'));
  3922.  
  3923.     if (!isFlexyHidden) {
  3924.       let rChatExist = base_ChatExist();
  3925.       if (rChatExist) {
  3926.         let { attr_chatblock, attr_chatcollapsed } = rChatExist;
  3927.         if (attr_chatblock === null) {
  3928.           //remove attribute if it is unknown
  3929.           attr_chatblock = false;
  3930.           attr_chatcollapsed = false;
  3931.         }
  3932.         wAttr(ytdFlexyElm, 'userscript-chatblock', attr_chatblock)
  3933.         wAttr(ytdFlexyElm, 'userscript-chat-collapsed', attr_chatcollapsed)
  3934.       }
  3935.     }
  3936.  
  3937.     let rTabSelection = [...ytdFlexyElm.querySelectorAll('.tab-btn[userscript-tab-content]')]
  3938.       .map(elm => ({ elm, hidden: elm.classList.contains('tab-btn-hidden') }));
  3939.  
  3940.     if(rTabSelection.length === 0){
  3941.       wAttr(ytdFlexyElm, 'tabview-selection', false);
  3942.     }else{
  3943.       rTabSelection=rTabSelection.filter(entry => entry.hidden !== true); // all available tabs
  3944.       if (rTabSelection.length === 0) wAttr(ytdFlexyElm, 'tabview-selection', '');
  3945.     }
  3946.     rTabSelection = null;
  3947.       
  3948.     let rEP = engagement_panels_();
  3949.     if (rEP && rEP.count > 0) wAttr(ytdFlexyElm, 'userscript-engagement-panel', false);
  3950.     //else wAttr(ytdFlexyElm, 'userscript-engagement-panel', rEP.value + ""); // can be 0
  3951.     else if(rEP.value>0) wAttr(ytdFlexyElm, 'userscript-engagement-panel', rEP.value + ""); // can be 0
  3952.  
  3953.     let ls = 0;
  3954.     ls = flexAttr_toLayoutStatus(ls, 'theater')
  3955.     ls = flexAttr_toLayoutStatus(ls, 'userscript-chat-collapsed')
  3956.     ls = flexAttr_toLayoutStatus(ls, 'userscript-chatblock')
  3957.     ls = flexAttr_toLayoutStatus(ls, 'is-two-columns_')
  3958.     ls = flexAttr_toLayoutStatus(ls, 'tabview-selection')
  3959.     ls = flexAttr_toLayoutStatus(ls, 'fullscreen')
  3960.     ls = flexAttr_toLayoutStatus(ls, 'userscript-engagement-panel')
  3961.  
  3962.     wls.layoutStatus = ls
  3963.  
  3964.     mtoFlexyAttr.bindElement(ytdFlexyElm,{
  3965.       attributes: true,
  3966.       attributeFilter: ['userscript-chat-collapsed', 'userscript-chatblock', 'theater', 'is-two-columns_', 'tabview-selection', 'fullscreen', 'userscript-engagement-panel', 'hidden'],
  3967.       attributeOldValue: true
  3968.     })
  3969.  
  3970.     ytdFlexyHiddenCheckBasic(ytdFlexyElm);
  3971.  
  3972.  
  3973.     let columns = document.querySelector('ytd-page-manager#page-manager #columns')
  3974.     if (columns) {
  3975.       wAttr(columns, 'userscript-scrollbar-render', true);
  3976.     }
  3977.  
  3978.     return false;
  3979.   }
  3980.   
  3981.  
  3982.   function ytdFlexyHiddenCheckBasic(ytdFlexyElm){
  3983.     // for both hidden and non-hidden ytd-watch-flexy
  3984.  
  3985.     deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden');
  3986.  
  3987.    // console.log(15403)
  3988.     document.documentElement.classList.toggle('tabview-normal-player',!deferredVarYTDHidden)
  3989.  
  3990.   }
  3991.  
  3992.   function checkVisibleEngagementPanel(){
  3993.     
  3994.     if(storeLastPanel){
  3995.  
  3996.       let elm_storeLastPanel = kRef(storeLastPanel);
  3997.  
  3998.       if(elm_storeLastPanel && !isDOMVisible(elm_storeLastPanel) ){
  3999.         storeLastPanel=null;
  4000.         ytBtnCloseEngagementPanels();
  4001.       }
  4002.  
  4003.     }
  4004.  
  4005.   }
  4006.  
  4007.   function ytdFlexyHiddenCheck(mutations) {
  4008.  
  4009.     //console.log(15350)
  4010.  
  4011.     const ytdFlexyElm = kRef(ytdFlexy)
  4012.     if (!ytdFlexyElm) return;
  4013.     let muHidden = false
  4014.  
  4015.     for (const mutation of mutations) {
  4016.       if (mutation.attributeName === 'hidden') {
  4017.         //console.log(343)
  4018.         muHidden = true;
  4019.         break;
  4020.       }
  4021.     }
  4022.  
  4023.     if (!muHidden) return;
  4024.     
  4025.  
  4026.     
  4027.     mtc_store= Date.now()+2870
  4028.     //console.log(7004)
  4029.     deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden');
  4030.  
  4031.     
  4032.     if(deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0){
  4033.       scheduledCommentRefresh=false;
  4034.     } 
  4035.  
  4036.     //console.log(15400)
  4037.     if(!deferredVarYTDHidden){
  4038.       mtf_forceCheckLiveVideo_disable = 0  
  4039.       timeline.setTimeout(function() {
  4040.         mtf_ChatExist();  
  4041.         layoutStatusMutex.lockWith(unlock=>{
  4042.           atChange(); // in case no mutation occurance
  4043.           ytdFlexyHiddenCheckBasic(ytdFlexyElm);
  4044.           dispatchWindowResize(); // player control positioning
  4045.           timeline.setTimeout(unlock, 40);          
  4046.         })        
  4047.       }, 40);
  4048.     }else{
  4049.       //console.log(15401)
  4050.       timeline.setTimeout(function() {
  4051.         //console.log(15402)
  4052.         ytdFlexyHiddenCheckBasic(ytdFlexyElm);
  4053.       }, 40);
  4054.     }
  4055.  
  4056.   }
  4057.  
  4058.  
  4059.  
  4060.  
  4061.   let switchTabActivity_lastTab = null
  4062.  
  4063.   function setDisplayedPlaylist() {
  4064.     //override the default youtube coding event prevention
  4065.     let cssElm = kRef(ytdFlexy);
  4066.     if (!scriptEnable || !cssElm) return;
  4067.     displayedPlaylist = mWeakRef(document.querySelector('ytd-watch-flexy #tab-list:not(.tab-content-hidden) ytd-playlist-panel-renderer') || null);
  4068.   }
  4069.  
  4070.   function fixLineClampFn1() {
  4071.     // use IntersectionObserver for new browser
  4072.     
  4073.     if(!isIntersectionObserverAvailable)
  4074.     timeline.setTimeout(() => requestAnimationFrame(() => new Promise(fixLineClampFn2)), 1)
  4075.   }
  4076.  
  4077.   //let lastFixLineClamp = 0
  4078.   //let mConstructor = null
  4079.   const isIntersectionObserverAvailable= !!window.IntersectionObserver;
  4080.   function fixLineClampFn2() {
  4081.     //let currentTime= Date.now();
  4082.     //if(currentTime)
  4083.     let contentElements = document.querySelectorAll('ytd-comments#comments ytd-expander[max-number-of-lines] > #content.ytd-expander:not(.tabview-fix-line-clamp)'); 
  4084.           // backward compatible with Waterfox Classic 
  4085.       // let contentElements = document.querySelectorAll('ytd-comments#comments ytd-expander[should-use-number-of-lines] > #content') 
  4086.     for (const elm of contentElements){
  4087.       //nativeValue(elm.parentNode,'recomputeOnResize',true)
  4088.  
  4089.       // loading -> fetched -> loaded in non-visual mode
  4090.       // require to trigger the update using mutation observer for line clamp
  4091.       elm.classList.toggle('tabview-fix-line-clamp'); // this is to trigger mutation observer in dekstop_polymer.js
  4092.   
  4093.     }
  4094.     nativeFuncStacked('ytd-comments#comments ytd-expander[max-number-of-lines]', 'calculateCanCollapse'); 
  4095.     
  4096.     //nativeConstStacked('ytd-comments#comments ytd-expander[max-number-of-lines]', 'recomputeOnResize',true); 
  4097.     contentElements = null;
  4098.   }
  4099.   
  4100.  
  4101.   function switchTabActivity(activeLink) {
  4102.     if (!scriptEnable) return;
  4103.  
  4104.     const ytdFlexyElm = kRef(ytdFlexy);
  4105.  
  4106.     if (!ytdFlexyElm) return;
  4107.  
  4108.     if (activeLink && activeLink.classList.contains('tab-btn-hidden')) return; // not allow to switch to hide tab
  4109.  
  4110.     if (isTheater() && isWideScreenWithTwoColumns()) activeLink = null;
  4111.  
  4112.  
  4113.     function runAtEnd() {
  4114.  
  4115.       
  4116.     //console.log(12312)
  4117.  
  4118.       if (activeLink) lastShowTab = activeLink.getAttribute('userscript-tab-content')
  4119.  
  4120.       displayedPlaylist = null;
  4121.       scrollingVideosList = null;
  4122.  
  4123.       if (activeLink && lastShowTab == '#tab-list') {
  4124.         setDisplayedPlaylist();
  4125.       } else if (activeLink && lastShowTab == '#tab-videos') {
  4126.         scrollingVideosList = mWeakRef(document.querySelector('ytd-watch-flexy #tab-videos:not(.tab-content-hidden) [placeholder-videos]'));
  4127.       }
  4128.  
  4129.  
  4130.       ytdFlexyElm.setAttribute('tabview-selection', activeLink ? lastShowTab : '')
  4131.  
  4132.       if (lastShowTab == '#tab-comments' && (ytdFlexyElm.getAttribute('tabview-youtube-comments') || '').lastIndexOf('S') >= 0) {
  4133.  
  4134.         
  4135.         if(mtf_forceCheckLiveVideo_disable===2) {}
  4136.         else{
  4137.           akAttr(ytdFlexyElm, 'tabview-youtube-comments', false, 'L');
  4138.  
  4139.           requestAnimationFrame(() => {
  4140.             let comments_tab = document.querySelector('#tab-comments');
  4141.             if (comments_tab && comments_tab.scrollTop > 0) comments_tab.scrollTop = 0;
  4142.           });
  4143.         }
  4144.  
  4145.       }
  4146.  
  4147.       if (lastShowTab == '#tab-comments') {
  4148.         fixLineClampFn1();
  4149.       }
  4150.  
  4151.     }
  4152.  
  4153.     const links = document.querySelectorAll('#material-tabs a[userscript-tab-content]');
  4154.  
  4155.  
  4156.  
  4157.     for (const link of links) {
  4158.       let content = document.querySelector(link.getAttribute('userscript-tab-content'));
  4159.       if (link && content) {
  4160.         if (link !== activeLink) {
  4161.           link.classList.remove("active");
  4162.           content.classList.add("tab-content-hidden");
  4163.         } else {
  4164.           link.classList.add("active");
  4165.           content.classList.remove("tab-content-hidden");
  4166.           //timeline.setTimeout(()=>content.focus(),400);
  4167.  
  4168.         }
  4169.       }
  4170.     }
  4171.  
  4172.     runAtEnd();
  4173.  
  4174.  
  4175.   }
  4176.  
  4177.   let tabsUiScript_setclick = false;
  4178.  
  4179.   function prepareTabBtn() {
  4180.  
  4181.     const materialTab = document.querySelector("#material-tabs")
  4182.     if (!materialTab) return;
  4183.  
  4184.     let noActiveTab = !!document.querySelector('ytd-watch-flexy[userscript-chatblock]:not([userscript-chat-collapsed])')
  4185.  
  4186.     const activeLink = materialTab.querySelector('a[userscript-tab-content].active:not(.tab-btn-hidden)')
  4187.     if (activeLink) switchTabActivity(noActiveTab ? null : activeLink)
  4188.  
  4189.     if (!tabsUiScript_setclick) {
  4190.       tabsUiScript_setclick = true;
  4191.       $(materialTab).on("click", "a", function(evt) {
  4192.  
  4193.         //console.log(8510)
  4194.         let ytdFlexyElm = kRef(ytdFlexy);
  4195.         if (!scriptEnable || !ytdFlexyElm) return null;
  4196.  
  4197.         if (!this.hasAttribute('userscript-tab-content')) return;
  4198.  
  4199.  
  4200.         evt.preventDefault();
  4201.  
  4202.         //console.log(8511)
  4203.  
  4204. /*
  4205.         if (this.getAttribute('userscript-tab-content') == '#tab-comments' && parseInt(ytdFlexyElm.getAttribute('tabview-youtube-comments') || '') < 0) {
  4206.           
  4207.         console.log(8512)
  4208.           return;
  4209.         }*/
  4210.  
  4211.         //console.log(8513)
  4212.         new Promise(requestAnimationFrame).then(() => {
  4213.  
  4214.  
  4215.           //console.log(8514)
  4216.           layoutStatusMutex.lockWith(unlock => {
  4217.  
  4218.             //console.log(8515)
  4219.             switchTabActivity_lastTab = this.getAttribute('userscript-tab-content');
  4220.  
  4221.             let isActiveAndVisible = this.classList.contains('tab-btn') && this.classList.contains('active') && !this.classList.contains('tab-btn-hidden')
  4222.  
  4223.             if (isWideScreenWithTwoColumns() && !isTheater() && isActiveAndVisible) {
  4224.               //optional
  4225.               timeline.setTimeout(unlock, 80);
  4226.               switchTabActivity(null);
  4227.               ytBtnSetTheater();
  4228.             } else if (isActiveAndVisible) {
  4229.               timeline.setTimeout(unlock, 80);
  4230.               switchTabActivity(null);
  4231.             } else {
  4232.               let pInterval = 60;
  4233.               if (isChatExpand() && isWideScreenWithTwoColumns()) {
  4234.                 ytBtnCollapseChat();
  4235.               } else if (isEngagementPanelExpanded() && isWideScreenWithTwoColumns()) {
  4236.                 ytBtnCloseEngagementPanels();
  4237.               } else if (isWideScreenWithTwoColumns() && isTheater() && !isFullScreen()) {
  4238.                 ytBtnCancelTheater();
  4239.               } else {
  4240.                 pInterval = 20;
  4241.               }
  4242.               //console.log(8518)
  4243.               timeline.setTimeout(() => {
  4244.                 timeline.setTimeout(makeBodyScroll, 20); // this is to make the image render
  4245.  
  4246.                 timeline.setTimeout(() => {
  4247.                   let rightTabs = document.querySelector('#right-tabs');
  4248.                   if (!isWideScreenWithTwoColumns() && rightTabs && rightTabs.offsetTop > 0 && this.classList.contains('active')) {
  4249.                     let tabButtonBar = document.querySelector('#material-tabs');
  4250.                     let tabButtonBarHeight = tabButtonBar ? tabButtonBar.offsetHeight : 0;
  4251.                     window.scrollTo(0, rightTabs.offsetTop - tabButtonBarHeight);
  4252.                   }
  4253.                 }, 60)
  4254.                // console.log(8519)
  4255.  
  4256.                 timeline.setTimeout(unlock, 80)
  4257.                 switchTabActivity(this)
  4258.  
  4259.               }, pInterval);
  4260.             }
  4261.  
  4262.  
  4263.           })
  4264.  
  4265.         })
  4266.  
  4267.  
  4268.  
  4269.  
  4270.       });
  4271.  
  4272.     }
  4273.  
  4274.   }
  4275.  
  4276.  
  4277.   // ---------------------------------------------------------------------------------------------
  4278.   window.addEventListener("yt-navigate-finish", onNavigationEnd)
  4279.  
  4280.   document.addEventListener("loadstart", (evt) => {
  4281.     if (!evt || !evt.target || evt.target.nodeName !== "VIDEO") return;
  4282.     let elm = evt.target;
  4283.     if (!elm.matches('#player video, #movie_player video, video[tabview-mainvideo]')) return;
  4284.  
  4285.     
  4286.     mtc_store= Date.now()+2870
  4287.  
  4288.     let src = elm.src;
  4289.     if (src !== lastVideoURL) {
  4290.       lastVideoURL = elm.src;
  4291.       elm.setAttribute('tabview-mainvideo', ''); // mainly for mini playing
  4292.     }
  4293.  
  4294.   }, true)
  4295.  
  4296.   // ---------------------------------------------------------------------------------------------
  4297.  
  4298.   let scrolling_lastD = 0;
  4299.  
  4300.   const singleColumnScrolling = function(scrolling_lastF) {
  4301.     
  4302.     if (!scriptEnable || deferredVarYTDHidden) return;
  4303.  
  4304.     let pageY = scrollY;
  4305.     if (pageY < 10 && scrolling_lastD === 0 && !scrolling_lastF) return;
  4306.  
  4307.     let targetElm, header, navElm;
  4308.  
  4309.     Promise.resolve().then(() => {
  4310.  
  4311.       targetElm = document.querySelector("#right-tabs");
  4312.       if (!targetElm) return;
  4313.       header = targetElm.querySelector("header");
  4314.       if (!header) return;
  4315.       navElm = document.querySelector('#masthead-container, #masthead')
  4316.       if (!navElm) return;
  4317.       let navHeight = navElm ? navElm.offsetHeight : 0
  4318.  
  4319.       let elmY = targetElm.offsetTop
  4320.  
  4321.       let xyz = [elmY + navHeight, pageY, elmY - navHeight]
  4322.  
  4323.       let xyStatus = 0
  4324.       if (xyz[1] < xyz[2] && xyz[2] < xyz[0]) {
  4325.         // 1
  4326.         xyStatus = 1
  4327.       }
  4328.  
  4329.       if (xyz[0] > xyz[1] && xyz[1] > xyz[2]) {
  4330.  
  4331.         //2
  4332.         xyStatus = 2
  4333.  
  4334.       }
  4335.  
  4336.       if (xyz[2] < xyz[0] && xyz[0] < xyz[1]) {
  4337.         // 3
  4338.  
  4339.         xyStatus = 3
  4340.  
  4341.  
  4342.       }
  4343.  
  4344.       return xyStatus;
  4345.  
  4346.     }).then((xyStatus) => {
  4347.  
  4348.       if ((xyStatus == 2 || xyStatus == 3) && (scrolling_lastD === 0 || scrolling_lastF)) {
  4349.         scrolling_lastD = 1;
  4350.         let {
  4351.           offsetHeight
  4352.         } = header
  4353.         let {
  4354.           offsetWidth
  4355.         } = targetElm
  4356.  
  4357.         targetElm.style.setProperty("--userscript-sticky-width", offsetWidth + 'px')
  4358.         targetElm.style.setProperty("--userscript-sticky", offsetHeight + 'px')
  4359.  
  4360.         wAttr(targetElm, 'userscript-sticky', true);
  4361.  
  4362.       } else if ((xyStatus == 1) && (scrolling_lastD === 1 || scrolling_lastF)) {
  4363.         scrolling_lastD = 0;
  4364.  
  4365.         wAttr(targetElm, 'userscript-sticky', false);
  4366.       }
  4367.  
  4368.  
  4369.       targetElm = null;
  4370.       header = null;
  4371.       navElm = null;
  4372.  
  4373.     });
  4374.  
  4375.   };
  4376.  
  4377.   window.addEventListener("scroll", function() {
  4378.     singleColumnScrolling(false)
  4379.   }, {
  4380.     capture: false,
  4381.     passive: true
  4382.   })
  4383.  
  4384.   let lastResizeAt = 0;
  4385.   window.addEventListener('resize', function() {
  4386.  
  4387.     if (!scriptEnable) return;
  4388.     if (deferredVarYTDHidden) return;
  4389.     lastResizeAt = Date.now();
  4390.  
  4391.     requestAnimationFrame(() => {
  4392.       singleColumnScrolling(true)
  4393.     })
  4394.  
  4395.     if(lastShowTab == '#tab-comments') fixLineClampFn1() // in case window resized leading the change of number of lines.
  4396.  
  4397.   }, {
  4398.     capture: false,
  4399.     passive: true
  4400.   })
  4401.  
  4402.  
  4403.  
  4404.   
  4405.   let hist = null
  4406.   const getHistState = (history)=>`${history.length}|${history.state?history.state.entryTime:null}`;
  4407.   function newVideoPageCheck(){
  4408.     let hState = getHistState(history)
  4409.     if(hist!==hState) {
  4410.       hist=hState;
  4411.       if(scriptEnable){
  4412.         //scriptEnable = false;
  4413.         let callTimeout = !newVideoPage.entryTime
  4414.         newVideoPage.entryTime = 1
  4415.         if(callTimeout) setTimeout(newVideoPage,0)
  4416.         
  4417.       }
  4418.       return true;
  4419.     }
  4420.   }
  4421.   function newVideoPage(){
  4422.     newVideoPage.entryTime = 0;
  4423.  
  4424.     console.log('newVideoPage')
  4425.     
  4426.     //console.log('newVideoPage-', 150, location.href)
  4427.  
  4428.     let ytdFlexyElm = kRef(ytdFlexy);
  4429.     if(!ytdFlexyElm) return;
  4430.  
  4431.     timeline.reset();
  4432.     layoutStatusMutex = new Mutex();
  4433.  
  4434.     //console.log('newVideoPage-', 350, location.href)
  4435.     
  4436.     let flag1= /^https?\:\/\/(\w+\.)*youtube\.com\/watch\?(\w+\=[^\/\?\&]+\&|\w+\=?\&)*v=[\w\-\_]+/.test(location.href)
  4437.     let tf = ()=>{
  4438.  
  4439.       let isFlexyHidden = (deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden'));
  4440.  
  4441.       let flag2 = !isFlexyHidden;
  4442.  
  4443.       if(flag1^flag2) return timeline.setTimeout(tf,7); else funcVisibleWatch();
  4444.  
  4445.       tf= null;
  4446.       funcVisibleWatch = null;
  4447.       ytdFlexyElm=null
  4448.  
  4449.     }
  4450.  
  4451.     let funcVisibleWatch = ()=>{
  4452.       
  4453.       //scriptEnable = true;
  4454.  
  4455.       let isFlexyHidden = (deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden'));
  4456.       ytdFlexyHiddenCheckBasic(ytdFlexyElm)
  4457.  
  4458.       if(!isFlexyHidden) {
  4459.  
  4460.         mtf_forceCheckLiveVideo_disable = 0;
  4461.         mtc_store= Date.now()+2870
  4462.  
  4463.         sect_lastUpdate = 0;
  4464.         if(pendingOne){
  4465.           // reset pendingOne = false if the element is already removed.
  4466.           pendingOne = document.querySelectorAll(`ytd-watch-flexy ytd-comments#comments [tabview-cache-time]`).length>1;
  4467.         }
  4468.  
  4469.         timeline.setTimeout(()=>{
  4470.           Q.mutationTarget=null;
  4471.           FP.mtf_attrComments()
  4472.         },2870)
  4473.     
  4474.         if(pageInit_attrComments) hookSection();
  4475.  
  4476.  
  4477.  
  4478.  
  4479.  
  4480.         
  4481.         let new_layoutStatus = wls.layoutStatus 
  4482.  
  4483.         const new_isExpandedChat = !(new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  4484.         const new_isCollaspedChat = (new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  4485.     
  4486.         const new_isTwoColumns = new_layoutStatus & LAYOUT_TWO_COLUMNS;
  4487.         const new_isTheater = new_layoutStatus & LAYOUT_THEATER;
  4488.         const new_isTabExpanded = new_layoutStatus & LAYOUT_TAB_EXPANDED;
  4489.         const new_isFullScreen = new_layoutStatus & LAYOUT_FULLSCREEN;
  4490.         const new_isExpandEPanel = new_layoutStatus & LAYOUT_ENGAGEMENT_PANEL_EXPAND;
  4491.  
  4492.         /*
  4493.         console.log('d67',
  4494.         
  4495.         ytdFlexyElm.getAttribute('tabview-selection')==='' ,
  4496.          new_isTwoColumns , !new_isTheater, !new_isTabExpanded, !new_isFullScreen , !new_isExpandEPanel , !new_isExpandedChat
  4497.  
  4498.         )
  4499.         */
  4500.  
  4501.         if( ytdFlexyElm.getAttribute('tabview-selection')==='' && new_isTwoColumns && !new_isTheater && !new_isTabExpanded && !new_isFullScreen && !new_isExpandEPanel && !new_isExpandedChat ){
  4502.           // e.g. engage panel removed after miniview and change video
  4503.           setToActiveTab();
  4504.         }else if(new_isExpandEPanel && ytdFlexyElm.querySelectorAll('ytd-engagement-panel-section-list-renderer[visibility="ENGAGEMENT_PANEL_VISIBILITY_EXPANDED"]').length===0){
  4505.           wls.layoutStatus = new_layoutStatus & (~LAYOUT_ENGAGEMENT_PANEL_EXPAND)
  4506.         }
  4507.  
  4508.         //mtf_attrFlexy();
  4509.  
  4510.         FP.mtf_attrEngagementPanel();
  4511.       
  4512.         FP.mtf_attrPlaylist();
  4513.       
  4514.         FP.mtf_attrComments();   
  4515.       
  4516.         FP.mtf_attrChatroom();
  4517.  
  4518.  
  4519.       }
  4520.  
  4521.       regularCheck(1,0,null); // mutation happens when the page is not ready; call again as the page is ready.
  4522.  
  4523.  
  4524.  
  4525.       
  4526.  
  4527.     }
  4528.     
  4529.  
  4530.     
  4531.     tf();
  4532.     
  4533.  
  4534.  
  4535.   }
  4536.  
  4537.  
  4538.  
  4539.   function browserHistoryState(){
  4540.     let maxCount = 5
  4541.  
  4542.     if (!scriptEnable) return;
  4543.     
  4544.     let ytdFlexyElm = kRef(ytdFlexy);
  4545.     if(!ytdFlexyElm) return;
  4546.  
  4547.     let cid = timeline.setInterval(function(){
  4548.       if(newVideoPageCheck()){
  4549.         timeline.clearInterval(cid);
  4550.       }
  4551.       if(--maxCount===0) timeline.clearInterval(cid);
  4552.     },7)
  4553.  
  4554.   }
  4555.  
  4556.  
  4557.   window.addEventListener('hashchange', function() {
  4558.     if (!scriptEnable) return;
  4559.     console.log('hashchange');
  4560.     browserHistoryState();
  4561.   }, { capture: true })
  4562.  
  4563.   window.addEventListener('popstate', function() {
  4564.     if (!scriptEnable) return;
  4565.     console.log('popstate');
  4566.     browserHistoryState();
  4567.   }, { capture: true })
  4568.  
  4569.  
  4570.   // function clearMutationObserver(o, key) {
  4571.   //   if (o[key]) {
  4572.   //     o[key].takeRecords();
  4573.   //     o[key].disconnect();
  4574.   //     o[key] = null;
  4575.   //     return true;
  4576.   //   }
  4577.   // }
  4578.  
  4579.   // function initMutationObserver(o, key, callback) {
  4580.   //   clearMutationObserver(o, key);
  4581.   //   const mto = new MutationObserver(callback);
  4582.   //   o[key] = mto;
  4583.   //   return mto;
  4584.   // }
  4585.   // function initMutationObserver2(o, key, mtoFunc) {
  4586.   //   clearMutationObserver(o, key);
  4587.   //   const mto = mtoFunc();
  4588.   //   o[key] = mto;
  4589.   //   return mto;
  4590.   // }
  4591.  
  4592.   document.addEventListener('wheel', function(evt) {
  4593.  
  4594.     if (!scriptEnable) return;
  4595.     const displayedPlaylist_element = kRef(displayedPlaylist);
  4596.     if (displayedPlaylist_element && displayedPlaylist_element.contains(evt.target)) {
  4597.       evt.stopPropagation();
  4598.       evt.stopImmediatePropagation();
  4599.     }
  4600.   }, { capture: true, passive: true });
  4601.  
  4602.  
  4603.   function setVideosTwoColumns(flag, bool) {
  4604.  
  4605.     //two columns to one column
  4606.  
  4607.     /*
  4608.         [placeholder-videos] ytd-watch-next-secondary-results-renderer.style-scope.ytd-watch-flexy
  4609.  
  4610.         is-two-columns =""  => no is-two-columns
  4611.         
  4612.         
  4613.         
  4614.         [placeholder-videos] tp-yt-paper-spinner#spinner.style-scope.ytd-continuation-item-renderer
  4615.         
  4616.         no hidden => hidden =""
  4617.         
  4618.         
  4619.         [placeholder-videos] div#button.style-scope.ytd-continuation-item-renderer
  4620.         
  4621.         
  4622.         hidden ="" => no hidden
  4623.         
  4624.  
  4625.         */
  4626.  
  4627.     let cssSelector1 = '[placeholder-videos] ytd-watch-next-secondary-results-renderer.style-scope.ytd-watch-flexy'
  4628.  
  4629.     let cssSelector2 = '[placeholder-videos] tp-yt-paper-spinner#spinner.style-scope.ytd-continuation-item-renderer'
  4630.  
  4631.     let cssSelector3 = '[placeholder-videos] div#button.style-scope.ytd-continuation-item-renderer'
  4632.  
  4633.     let res = {}
  4634.     if (flag & 1) {
  4635.       res.m1 = document.querySelector(cssSelector1)
  4636.       if (res.m1) wAttr(res.m1, 'is-two-columns', bool ? '' : false);
  4637.     }
  4638.  
  4639.     if (flag & 2) {
  4640.       res.m2 = document.querySelector(cssSelector2)
  4641.       if (res.m2) wAttr(res.m2, 'hidden', bool ? false : '');
  4642.     }
  4643.  
  4644.     if (flag & 4) {
  4645.       res.m3 = document.querySelector(cssSelector3)
  4646.       if (res.m3) wAttr(res.m3, 'hidden', bool ? '' : false);
  4647.     }
  4648.  
  4649.  
  4650.     return res
  4651.  
  4652.  
  4653.  
  4654.  
  4655.   }
  4656.  
  4657.   let lastScrollFetch = 0;
  4658.   // function isScrolledToEnd(){
  4659.   //     return (window.innerHeight + window.pageYOffset) >= document.scrollingElement.scrollHeight - 2;
  4660.   // }
  4661.   let lastOffsetTop = 0;
  4662.   window.addEventListener('scroll', function(evt) {
  4663.  
  4664.     //console.log(evt.target)
  4665.  
  4666.     if (!scriptEnable) return;
  4667.  
  4668.  
  4669.     if (!kRef(scrollingVideosList)) return;
  4670.     if (videoListBeforeSearch) return;
  4671.  
  4672.  
  4673.  
  4674.     let visibleHeight = document.scrollingElement.clientHeight;
  4675.     let totalHeight = document.scrollingElement.scrollHeight;
  4676.  
  4677.     if (totalHeight < visibleHeight * 1.5) return; // filter out two column view;
  4678.  
  4679.     let z = window.pageYOffset + visibleHeight;
  4680.     let h_advanced = totalHeight - (visibleHeight > 5 * 40 ? visibleHeight * 0.5 : 40);
  4681.  
  4682.  
  4683.  
  4684.     if (z > h_advanced && !isWideScreenWithTwoColumns()) {
  4685.  
  4686.       let ct = Date.now();
  4687.       if (ct - lastScrollFetch < 500) return; //prevent continuous calling
  4688.  
  4689.       lastScrollFetch = ct;
  4690.  
  4691.       let res = setVideosTwoColumns(2 | 4, true)
  4692.       if (res.m3 && res.m2) {
  4693.  
  4694.         //wait for DOM change, just in case
  4695.         requestAnimationFrame(() => {
  4696.           let { offsetTop } = res.m2 // as visibility of m2 & m3 switched.
  4697.  
  4698.           if (offsetTop - lastOffsetTop < 40) return; // in case bug, or repeating calling.  // the next button shall below the this button 
  4699.           lastOffsetTop = offsetTop
  4700.  
  4701.           res.m2.parentNode.dispatchEvent(new Event('yt-service-request-sent-button-renderer'))
  4702.  
  4703.           res = null
  4704.         })
  4705.  
  4706.       } else {
  4707.  
  4708.         res = null
  4709.       }
  4710.  
  4711.  
  4712.     }
  4713.  
  4714.  
  4715.  
  4716.  
  4717.   }, { passive: true })
  4718.  
  4719.   let sect_lastUpdate = 0;
  4720.  
  4721.   let sect_holder = null;
  4722.   let sect_hText = null;
  4723.   let sect_hTime = 0;
  4724.  
  4725.   let pendingOne = false;
  4726.   let mtf_forceCheckLiveVideo_disable = 0;
  4727.  
  4728.   let storeLastPanel = null;
  4729.  
  4730.   let deferredVarYTDHidden = null;
  4731.   let scheduledCommentRefresh = false;
  4732.  
  4733.   let pageInit_attrComments = false;
  4734.  
  4735.  
  4736.  
  4737.   let mgChatFrame = {
  4738.     setVar(elm) {
  4739.       mgChatFrame.kVar = mWeakRef(elm)
  4740.     },
  4741.     getVar() {
  4742.       return kRef(mgChatFrame.kVar)
  4743.     },
  4744.     inPage() {
  4745.       let elm = mgChatFrame.getVar();
  4746.       if (!elm) return false;
  4747.       let ytdFlexyElm = kRef(ytdFlexy);
  4748.       if(!ytdFlexyElm) return false;
  4749.       return ytdFlexyElm.contains(elm)
  4750.     }
  4751.   };
  4752.  
  4753.   const timeline = {
  4754.     // after initialized (initObserver)
  4755.     cn1:{},
  4756.     cn2:{},
  4757.     setTimeout(f,d){
  4758.       return timeline.cn1[setTimeout(f,d)]=true
  4759.     },
  4760.     clearTimeout(cid){
  4761.       timeline.cn1[cid]=false; return clearTimeout(cid)
  4762.     },
  4763.     setInterval(f,d){
  4764.       return timeline.cn2[setInterval(f,d)]=true
  4765.     },
  4766.     clearInterval(cid){
  4767.       timeline.cn2[cid]=false; return clearInterval(cid)
  4768.     },
  4769.     reset(){
  4770.       for(let cid in timeline.cn1) timeline.cn1[cid] && clearTimeout(cid)
  4771.       for(let cid in timeline.cn2) timeline.cn2[cid] && clearInterval(cid)
  4772.       timeline.cn1={}
  4773.       timeline.cn2={}
  4774.     }
  4775.   }
  4776.  
  4777.   class AttributeMutationObserver extends MutationObserver {
  4778.     constructor(flist){
  4779.       super((mutations, observer)=>{
  4780.         for(const mutation of mutations){
  4781.           if (mutation.type === 'attributes') {
  4782.             this.checker(mutation.target, mutation.attributeName)
  4783.           }
  4784.         }
  4785.       })
  4786.       this.flist=flist;
  4787.       this.res={}
  4788.     }
  4789.     
  4790.     takeRecords(){
  4791.       super.takeRecords();
  4792.     }
  4793.     disconnect(){
  4794.       this._target = null;
  4795.       super.disconnect();
  4796.     }
  4797.     observe(target){
  4798.       if(this._target) return; 
  4799.       this._target = mWeakRef(target);
  4800.       const options = {
  4801.         attributes: true,
  4802.         attributeFilter: Object.keys(this.flist),
  4803.         //attributeFilter: [ "status", "username" ],
  4804.         attributeOldValue: true
  4805.       }
  4806.       super.observe(target, options)
  4807.     }
  4808.     checker(target, attributeName){
  4809.       let nv = target.getAttribute(attributeName);
  4810.       if(this.res[attributeName]!==nv){
  4811.         this.res[attributeName] = nv
  4812.         let f = this.flist[attributeName];
  4813.         if(f) f(attributeName, nv);
  4814.  
  4815.       }
  4816.     }
  4817.     check(delay = 0){
  4818.       setTimeout(()=>{
  4819.         let target = kRef(this._target)
  4820.         for(const key of Object.keys(this.flist)){
  4821.           this.checker(target,key)
  4822.         }
  4823.         target = null;
  4824.       },delay)
  4825.     }
  4826.   } 
  4827.  
  4828.   function goYoutubeGeniusLyrics(){
  4829.  
  4830.     setTimeout(function $f(){
  4831.  
  4832.       if(!document.documentElement.hasAttribute('w-engagement-panel-genius-lyrics')) return setTimeout($f,100)
  4833.  
  4834.       document.documentElement.dispatchEvent(new CustomEvent('engagement-panel-genius-lyrics'))
  4835.  
  4836.  
  4837.     },100)
  4838.  
  4839.  
  4840.  
  4841.   }
  4842.  
  4843.  
  4844.   /*
  4845.  
  4846.   To be implement: timeline
  4847.  
  4848.   timeline.setTimeout
  4849.   timeline.clearTimeout
  4850.   timeline.setInterval
  4851.   timeline.clearInterval
  4852.  
  4853.   */
  4854.  
  4855.  
  4856.  
  4857.   //Object.keys($0).filter(key=>!(key in $0.constructor.prototype))
  4858.  
  4859.   //Object.getOwnPropertyNames(window).filter(k=>k.startsWith('HTML'))
  4860.   //Object.getOwnPropertyNames(window).filter(k=>k.startsWith('HTML')).filter(k=>$0 instanceof window[k])
  4861.  
  4862.  
  4863.   /* --------------------------- browser's bug in -webkit-box ----------------------------------------- */
  4864.  
  4865.   /*
  4866.    fix bug for comment section - version 1.8.7 
  4867.   This issue is the bug in browser's rendering
  4868.    I guess, this is due to the lines clamp with display:-webkit-box 
  4869.    use stupid coding to let it re-render when its content become visible
  4870.    
  4871.   /*
  4872.  
  4873.   ytd-expander[should-use-number-of-lines][collapsed] > #content.ytd-expander {
  4874.       color: var(--yt-spec-text-primary);
  4875.       display: -webkit-box;
  4876.       overflow: hidden;
  4877.       max-height: none;
  4878.       -webkit-box-orient: vertical;
  4879.       -webkit-line-clamp: var(--ytd-expander-max-lines, 4);
  4880.   }
  4881.  
  4882.   // v1.8.36 imposed a effective solution for fixing this bug
  4883.  
  4884.   */
  4885.  
  4886.   /* --------------------------- browser's bug in -webkit-box ----------------------------------------- */
  4887.  
  4888.  
  4889.   /**
  4890.    * 
  4891.  
  4892.  
  4893. f.initChildrenObserver=function(){var a=this;this.observer=new MutationObserver(function(){return a.childrenChanged()});
  4894. this.observer.observe(this.$.content,{subtree:!0,childList:!0,attributes:!0});this.childrenChanged()};
  4895. f.childrenChanged=function(){var a=this;this.alwaysToggleable?this.canToggle=this.alwaysToggleable:this.canToggleJobId||(this.canToggleJobId=window.requestAnimationFrame(function(){$h(function(){a.canToggleJobId=0;a.calculateCanCollapse()})}))};
  4896.  
  4897.  
  4898. f.onIronResize=function(){this.recomputeOnResize&&this.childrenChanged()};
  4899.  
  4900.  
  4901. onButtonClick_:function(){this.fire("yt-close-upsell-dialog")},
  4902. computeHasHeader_:function(a){return!!a.headerBackgroundImage}});var geb;var heb;var ieb;var jeb;var xI=function(){var a=L.apply(this,arguments)||this;a.alignAuto=!1;a.collapsed=!0;a.isToggled=!1;a.alwaysCollapsed=!1;a.canToggle=!0;a.collapsedHeight=80;a.disableToggle=!1;a.alwaysToggleable=!1;a.reversed=!1;a.shouldUseNumberOfLines=!1;a.recomputeOnResize=!1;a.canToggleJobId=0;return a};
  4903. n(xI,L);f=xI.prototype;f.alwaysToggleableChanged=function(){this.alwaysToggleable&&(this.canToggle=!0)};
  4904.  
  4905.  
  4906. f.calculateCanCollapse=function(){this.canToggle=this.shouldUseNumberOfLines?this.alwaysToggleable||this.$.content.offsetHeight<this.$.content.scrollHeight:this.alwaysToggleable||this.$.content.scrollHeight>this.collapsedHeight};
  4907. f.detachObserver=function(){this.observer&&this.observer.disconnect()};
  4908.  
  4909.    * 
  4910.    * 
  4911.    * 
  4912.    */
  4913.  
  4914.  
  4915.  
  4916.  
  4917. })();
  4918.  
  4919.  
  4920.  
  4921.  
  4922.  
  4923.  
  4924.  
  4925.  
  4926.  
  4927.  
  4928.  
  4929.  
  4930.  
  4931.  
  4932.  
  4933.  
  4934.  
  4935.  
  4936.  
  4937.  
  4938.  
  4939.  
  4940.  
  4941.  
  4942.  
  4943.  
  4944.  
  4945.  
  4946.  
  4947.  
  4948.  
  4949.  
  4950.  
  4951.  
  4952.  
  4953.  
  4954.  
  4955.  
  4956.  
  4957.  
  4958.  
  4959.  
  4960.     // https://github.com/cyfung1031/Tabview-Youtube/raw/main/js/content.js
  4961.  
  4962. }
  4963.  
  4964.  
  4965. ;!(function $$() {
  4966.     'use strict';
  4967.  
  4968.     if(document.documentElement==null) return window.requestAnimationFrame($$)
  4969.  
  4970.     const cssTxt = GM_getResourceText("contentCSS");
  4971.  
  4972.     function addStyle (styleText) {
  4973.       const styleNode = document.createElement('style');
  4974.       styleNode.type = 'text/css';
  4975.       styleNode.textContent = styleText;
  4976.       document.documentElement.appendChild(styleNode);
  4977.       return styleNode;
  4978.     }
  4979.  
  4980.     addStyle (cssTxt);
  4981.  
  4982.     main(window.$);
  4983.  
  4984.  
  4985.     // Your code here...
  4986. })();