☰

Tabview Youtube

Make comments and lists into tabs for YouTube Videos

当前为 2022-05-09 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Tabview Youtube
  3. // @name:en      Tabview Youtube
  4. // @name:jp      Tabview Youtube
  5. // @name:zh-tw   Tabview Youtube
  6. // @name:zh-cn   Tabview Youtube
  7. // @namespace    http://tampermonkey.net/
  8. // @version     2.1.3
  9. // @license     MIT https://github.com/cyfung1031/Tabview-Youtube/blob/main/LICENSE
  10. // @description     Make comments and lists into tabs for YouTube Videos
  11. // @description:en  Make comments and lists into tabs for YouTube Videos
  12. // @description:jp  YouTube動画のコメントやリストなどをタブに作成します
  13. // @description:zh-tw  把Youtube Videos中的評論及影片清單製作成Tabs
  14. // @description:zh-cn  把Youtube Videos中的评论及视频列表制作成Tabs
  15. // @author       CY Fung
  16. // @include     https://www.youtube.com/*
  17. // @icon         https://github.com/cyfung1031/Tabview-Youtube/raw/main/images/icon128p.png
  18. // @run-at      document-start
  19. // @grant       GM_getResourceText
  20. // @resource     contentCSS https://raw.githubusercontent.com/cyfung1031/Tabview-Youtube/4546739b1eb4224a62a431fe1b23a7b8201d4f17/css/style_content.css
  21. // @resource     injectionJS1 https://raw.githubusercontent.com/cyfung1031/Tabview-Youtube/4546739b1eb4224a62a431fe1b23a7b8201d4f17/js/injection_script_1.js
  22. // @resource     injectionFixAutoComplete https://raw.githubusercontent.com/cyfung1031/Tabview-Youtube/4546739b1eb4224a62a431fe1b23a7b8201d4f17/js/injectionScript_fixAutoComplete.js
  23. // @require      https://cdnjs.cloudflare.com/ajax/libs/cash/8.1.0/cash.min.js
  24. // @noframes
  25. // ==/UserScript==
  26.  
  27. /* jshint esversion:6 */
  28.  
  29. function main($){
  30.     // MIT License
  31.     // https://github.com/cyfung1031/Tabview-Youtube/raw/main/js/content.js
  32.  
  33.  
  34.  
  35.  
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  38.  
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  40.  
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  48.  
  49.  
  50.  
  51.  
  52.  
  53.  
  54. -(function() {
  55.  
  56.   function inIframe() {
  57.     try {
  58.       return window.self !== window.top;
  59.     } catch (e) {
  60.       return true;
  61.     }
  62.   }
  63.  
  64.   if (inIframe()) return;
  65.  
  66.   if (!$) return;
  67.  
  68.   /**
  69.    * SVG resources:
  70.    * <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>
  71.    */
  72.  
  73.   const scriptVersionForExternal = '2022/05/07';
  74.  
  75.   //const githubURLBase = "https://raw.githubusercontent.com/cyfung1031/Tabview-Youtube";
  76.   //const githubURLCommit = "bdf401045266e5224663f80b276bc7f56d122b8d";
  77.  
  78.   const isMyScriptInChromeRuntime = () => typeof((((window || 0).chrome || 0).runtime || 0).getURL) == 'function'
  79.  
  80.  
  81.   const svgComments = `
  82.     <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
  83.     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
  84.     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
  85.     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
  86.     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"/>
  87.     <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
  88.     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
  89.     c3.27,0,5.93-2.66,5.93-5.929V8.465C60,5.195,57.34,2.535,54.072,2.535z"/>
  90.     `.trim();
  91.  
  92.   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
  93.     z M91,39h43v34H91V39z M61,259H30v-34h31V259z M61,73H30V39h31V73z M134,259H91v-34h43V259z M123,176.708v-55.417
  94.     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
  95.     C128.84,188.011,123,184.958,123,176.708z M207,259h-43v-34h43V259z M207,73h-43V39h43V73z M268,259h-31v-34h31V259z M268,73h-31V39
  96.     h31V73z"/>`.trim();
  97.  
  98.   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
  99.     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
  100.     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
  101.     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
  102.     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
  103.     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
  104.     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
  105.     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
  106.     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
  107.     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
  108.     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
  109.     c0.353,0.331,0.53,0.731,0.53,1.196C14.667,6.703,14.49,7.101,14.137,7.429z"/>`.trim();
  110.  
  111.   const svgPlayList = `
  112.     <rect x="0" y="64" width="256" height="42.667"/>
  113.     <rect x="0" y="149.333" width="256" height="42.667"/>
  114.     <rect x="0" y="234.667" width="170.667" height="42.667"/>
  115.     <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 
  116.     298.667,277.333 298.667,362.667 341.333,362.667 341.333,277.333 426.667,277.333 426.667,234.667"/>
  117.     `.trim();
  118.  
  119.   // --- Youtube Video Testing : 
  120.   // Square Video: https://www.youtube.com/watch?v=L0RXVnRbFg8 
  121.   // Square Video: https://www.youtube.com/watch?v=bK_rKhMIotU
  122.   // ---
  123.  
  124.  
  125.   const LAYOUT_TWO_COLUMNS = 1;
  126.   const LAYOUT_THEATER = 2;
  127.   const LAYOUT_FULLSCREEN = 4;
  128.   const LAYOUT_CHATROOM = 8;
  129.   const LAYOUT_CHATROOM_COLLASPED = 16;
  130.   const LAYOUT_TAB_EXPANDED = 32;
  131.   const LAYOUT_ENGAGEMENT_PANEL_EXPAND = 64;
  132.  
  133.   const mtoInterval1 = 40;
  134.   const mtoInterval2 = 150;
  135.  
  136.   let lastVideoURL = null; // for less attribute set only
  137.  
  138.  
  139.   const WeakRef = window.WeakRef;
  140.   const mWeakRef = WeakRef ? (o => o ? new WeakRef(o) : null) : (o => o || null);
  141.   const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
  142.  
  143.  
  144.  
  145.   const nonCryptoRandStr_base = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
  146.   function nonCryptoRandStr(n){
  147.     const result = new Array(n);
  148.     const baseStr = nonCryptoRandStr_base;
  149.     const bLen = baseStr.length;
  150.     for ( let i = 0; i < n; i++ ) {
  151.       let t = null
  152.       do {
  153.         t = baseStr.charAt(Math.floor(Math.random() * bLen));
  154.       }while(i===0 && 10-t>0)
  155.       result[i]=t;
  156.    }
  157.    return result.join('');
  158.   }
  159.  
  160.   class ObserverRegister{
  161.     static uidStore = {};
  162.     
  163.     /** @type {string} */
  164.     uid;
  165.  
  166.     /** @type {Function} */
  167.     observerCreator;
  168.  
  169.     /** @type {MutationObserver | IntersectionObserver} */
  170.     observer;    
  171.     
  172.     constructor(/** @type {Function} */ observerCreator){
  173.       let uid = null;
  174.       const uidStore = ObserverRegister.uidStore;
  175.       do{
  176.         uid = nonCryptoRandStr(5);
  177.       }while(uidStore[uid])
  178.       uidStore[uid] = true;
  179.       this.uid = uid;
  180.       this.observerCreator = observerCreator
  181.       this.observer = null;
  182.     }
  183.     bindElement(/** @type {HTMLElement} */ elm, ...args){
  184.       if(elm.hasAttribute(`o3r-${this.uid}`))return false;
  185.       elm.setAttribute(`o3r-${this.uid}`,'')
  186.       if(this.observer===null){
  187.         this.observer=this.observerCreator();
  188.       }
  189.       this.observer.observe(elm, ...args)
  190.       return true
  191.     }
  192.     clear(/** @type {boolean} */ flag){
  193.       if(this.observer !== null){
  194.         //const uidStore = ObserverRegister.uidStore;
  195.         if(flag === true){
  196.           this.observer.takeRecords();
  197.           this.observer.disconnect();
  198.         }
  199.         this.observer = null;
  200.         for(const s of document.querySelectorAll(`[o3r-${this.uid}]`)) s.removeAttribute(`o3r-${this.uid}`)
  201.         //uidStore[this.uid]=false;
  202.         //this.uid = null;
  203.       }
  204.     }
  205.   }
  206.  
  207.   const mtoMutation_watchFlexy = new ObserverRegister(()=>{
  208.     return new MutationObserver(FP.mtoNavF)
  209.   });
  210.   const sa_wflexy = mtoMutation_watchFlexy.uid;
  211.  
  212.   const mtoMutation_body = new ObserverRegister(()=>{
  213.     return new MutationObserver(FP.mtoBodyF)
  214.   });
  215.   const sa_body = mtoMutation_body.uid;
  216.  
  217.   const mtoFlexyAttr = new ObserverRegister(()=>{
  218.     return new MutationObserver(mtf_attrFlexy)
  219.   });
  220.   const sa_flexyAttr = mtoFlexyAttr.uid;
  221.  
  222.   const mtoVisibility_EngagementPanel = new ObserverRegister(()=>{
  223.     return new MutationObserver(FP.mtf_attrEngagementPanel)
  224.   });
  225.   const sa_epanel = mtoVisibility_EngagementPanel.uid;
  226.  
  227.   const mtoVisibility_Playlist = new ObserverRegister(()=>{
  228.     return new AttributeMutationObserver({
  229.       "hidden": FP.mtf_attrPlaylist
  230.     })
  231.   })
  232.   const sa_playlist = mtoVisibility_Playlist.uid;
  233.  
  234.   const mtoVisibility_Comments = new ObserverRegister(()=>{
  235.     return new AttributeMutationObserver({
  236.       "hidden": FP.mtf_attrComments
  237.     })
  238.   })
  239.   const sa_comments = mtoVisibility_Comments.uid;
  240.  
  241.  
  242.   const mtoVisibility_Chatroom = new ObserverRegister(()=>{
  243.     return new AttributeMutationObserver({
  244.       "collapsed": FP.mtf_attrChatroom
  245.     })
  246.   })
  247.   const sa_chatroom = mtoVisibility_Chatroom.uid;
  248.  
  249.  
  250.  
  251.  
  252.  
  253.   function tracer(key, cmp) {
  254.     if (cmp > 0) return tracer[key] === cmp;
  255.     return (tracer[key] = Date.now());
  256.   }
  257.  
  258.   function racer(key, f) {
  259.     let now = Date.now();
  260.     const kTime = `${key}$$1`
  261.     let t = racer[kTime] || 0;
  262.  
  263.     if (now < t) {
  264.       const kCount = `${key}$$2`;
  265.       racer[kCount] = (racer[kCount] || 0) + 1;
  266.       if (racer[kCount] === 1) {
  267.         let g = f;
  268.         requestAnimationFrame(() => {
  269.           racer[kCount] = 0;
  270.           g();
  271.           g = null;
  272.         })
  273.       }
  274.     } else {
  275.       racer[kTime] = now + 16;
  276.       f();
  277.     }
  278.   }
  279.  
  280.   class ScriptEF {
  281.     constructor() {
  282.       this._id = scriptEC;
  283.     }
  284.     isValid() {
  285.       return this._id === scriptEC;
  286.     }
  287.   }
  288.  
  289.   class Timeout {
  290.  
  291.     set(f, d, repeatCount) {
  292.       if (this.cid > 0) return;
  293.       let sEF = new ScriptEF();
  294.       if (repeatCount > 0) {
  295.  
  296.         let rc = repeatCount;
  297.         const g = () => {
  298.           this.cid = 0;
  299.           if (!sEF.isValid()) return;
  300.           let res = f();
  301.           if (--rc <= 0) return;
  302.           if (res === true) this.cid = timeline.setTimeout(g, d);
  303.         }
  304.         g();
  305.  
  306.       } else {
  307.  
  308.         const g = () => {
  309.           this.cid = 0;
  310.           if (!sEF.isValid()) return;
  311.           if (f() === true) this.cid = timeline.setTimeout(g, d);
  312.         }
  313.         this.cid = timeline.setTimeout(g, d);
  314.       }
  315.     }
  316.  
  317.     clear() {
  318.       if (this.cid > 0) timeline.clearTimeout(this.cid);
  319.     }
  320.  
  321.     isEmpty() {
  322.       return !this.cid
  323.     }
  324.  
  325.  
  326.   }
  327.  
  328.   class Mutex {
  329.  
  330.     constructor() {
  331.       this.p = Promise.resolve()
  332.     }
  333.  
  334.     lockWith(f) {
  335.  
  336.       this.p = this.p.then(() => {
  337.         return new Promise(f)
  338.       }).catch(console.warn)
  339.     }
  340.  
  341.   }
  342.  
  343.  
  344.  
  345.   function prettyElm(elm) {
  346.     if (!elm || !elm.nodeName) return null;
  347.     const eId = elm.id || null;
  348.     const eClsName = elm.className || null;
  349.     return [elm.nodeName.toLowerCase(), typeof eId == 'string' ? "#" + eId : '', typeof eClsName == 'string' ? '.' + eClsName.replace(/\s+/g, '.') : ''].join('').trim();
  350.   }
  351.  
  352.   function extractTextContent(elm) {
  353.     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, '')
  354.   }
  355.  
  356.   function addScript(scriptText) {
  357.     const scriptNode = document.createElement('script');
  358.     scriptNode.type = 'text/javascript';
  359.     scriptNode.textContent = scriptText;
  360.     try {
  361.       document.documentElement.appendChild(scriptNode);
  362.     } catch (e) {
  363.       console.log('addScript Error', e)
  364.     }
  365.     return scriptNode;
  366.   }
  367.  
  368.   function addScriptByURL(scriptURL) {
  369.     const scriptNode = document.createElement('script');
  370.     scriptNode.type = 'text/javascript';
  371.     scriptNode.src = scriptURL;
  372.     try {
  373.       document.documentElement.appendChild(scriptNode);
  374.     } catch (e) {
  375.       console.log('addScriptByURL Error', e)
  376.     }
  377.     return scriptNode;
  378.   }
  379.  
  380.   function addStyle(styleText, container) {
  381.     const styleNode = document.createElement('style');
  382.     //styleNode.type = 'text/css';
  383.     styleNode.textContent = styleText;
  384.     (container || document.documentElement).appendChild(styleNode);
  385.     return styleNode;
  386.   }
  387.  
  388.  
  389.   const stopIframePropagation = function(evt){
  390.     if(scriptEnable && evt && evt.target && evt.target.nodeName=='IFRAME'){
  391.       evt.stopImmediatePropagation();
  392.       evt.stopPropagation();
  393.     }
  394.   }
  395.   document.addEventListener('mouseover', stopIframePropagation, true)
  396.   document.addEventListener('mouseout', stopIframePropagation, true)
  397.   document.addEventListener('mousedown', stopIframePropagation, true)
  398.   document.addEventListener('mouseup', stopIframePropagation, true)
  399.   document.addEventListener('keydown', stopIframePropagation, true)
  400.   document.addEventListener('keyup', stopIframePropagation, true)
  401.   document.addEventListener('mouseenter', stopIframePropagation, true)
  402.   document.addEventListener('mouseleave', stopIframePropagation, true)
  403.  
  404.  
  405.  
  406.   function isDOMVisible(elem) {
  407.     // jQuery version : https://github.com/jquery/jquery/blob/a684e6ba836f7c553968d7d026ed7941e1a612d8/src/css/hiddenVisibleSelectors.js
  408.     return !!(elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length);
  409.   }
  410.  
  411.   function isNonEmptyString(s) {
  412.     return typeof s == 'string' && s.length > 0;
  413.   }
  414.  
  415.  
  416.   async function nativeFunc(dom, property, args) {
  417.     dom.dispatchEvent(new CustomEvent("userscript-call-dom-func", { detail: { property, args } }))
  418.   }
  419.  
  420.   /*
  421.   async function nativeValue(dom, property, args) {
  422.     dom.dispatchEvent(new CustomEvent("userscript-call-dom-value", { detail: { property, args } }))
  423.   }
  424.   */
  425.   async function nativeFuncStacked(selector, property, args){
  426.     document.dispatchEvent(new CustomEvent("userscript-call-dom-func-stacked", { detail: { selector, property, args } }))
  427.   }
  428.   /*
  429.   async function nativeValueStacked(selector, property, args){
  430.     document.dispatchEvent(new CustomEvent("userscript-call-dom-value-stacked", { detail: { selector, property, args } }))
  431.   }
  432.   async function nativeConstStacked(selector, property, args){
  433.     document.dispatchEvent(new CustomEvent("userscript-call-dom-const-stacked", { detail: { selector, property, args } }))
  434.   }
  435.   */
  436.  
  437.  
  438.   function akAttr(cssElm, attrName, isNegative, flag) {
  439.     // isNegative => incomplete loading
  440.  
  441.     let u = parseInt(cssElm.getAttribute(attrName) || 0) || 0;
  442.     let ak = Math.abs(u);
  443.  
  444.     if (ak > 100 && isNegative && u < 0) {
  445.  
  446.     } else if (ak > 100 && !isNegative && u > 0) {
  447.  
  448.     } else {
  449.       if (ak <= 100) {
  450.         ak = 101;
  451.       } else {
  452.         ak++;
  453.         if (ak >= 800) ak = 101;
  454.       }
  455.       // 101, 102, ... 799, 101 
  456.     }
  457.  
  458.     cssElm.setAttribute(attrName, `${ isNegative ? -ak : ak }${ flag || '' }`)
  459.   }
  460.  
  461.  
  462.  
  463.   let timeout_resize_for_layout_change = new Timeout();
  464.  
  465.   function dispatchWindowResize(){
  466.     // for youtube to detect layout resize for adjusting Player tools
  467.     return window.dispatchEvent(new Event('resize'));
  468.   }
  469.  
  470.  
  471.  
  472.   function layoutStatusChanged(old_layoutStatus, new_layoutStatus) {
  473.  
  474.  
  475.     if (old_layoutStatus === new_layoutStatus) return;
  476.  
  477.     const cssElm = kRef(ytdFlexy);
  478.  
  479.     if (!cssElm) return;
  480.  
  481.  
  482.     const new_isExpandedChat = !(new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  483.     const new_isCollaspedChat = (new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  484.  
  485.     const new_isTwoColumns = new_layoutStatus & LAYOUT_TWO_COLUMNS;
  486.     const new_isTheater = new_layoutStatus & LAYOUT_THEATER;
  487.     const new_isTabExpanded = new_layoutStatus & LAYOUT_TAB_EXPANDED;
  488.     const new_isFullScreen = new_layoutStatus & LAYOUT_FULLSCREEN;
  489.     const new_isExpandEPanel = new_layoutStatus & LAYOUT_ENGAGEMENT_PANEL_EXPAND;
  490.  
  491.  
  492.     function showTabOrChat() {
  493.  
  494.       layoutStatusMutex.lockWith(unlock => {
  495.  
  496.         if (lastShowTab == '#chatroom') {
  497.  
  498.           if (new_isTabExpanded) switchTabActivity(null)
  499.           if (!new_isExpandedChat) ytBtnExpandChat();
  500.  
  501.         } else if (lastShowTab && lastShowTab.indexOf('#engagement-panel-') == 0) {
  502.  
  503.           if (new_isTabExpanded) switchTabActivity(null)
  504.           if (!new_isExpandEPanel) ytBtnOpenEngagementPanel(lastShowTab);
  505.  
  506.         } else {
  507.  
  508.           if (new_isExpandedChat) ytBtnCollapseChat()
  509.           if (!new_isTabExpanded) {setToActiveTab();}
  510.  
  511.         }
  512.  
  513.         timeline.setTimeout(unlock, 40);
  514.  
  515.       })
  516.     }
  517.  
  518.     function hideTabAndChat() {
  519.  
  520.       layoutStatusMutex.lockWith(unlock => {
  521.  
  522.         if (new_isTabExpanded) switchTabActivity(null)
  523.         if (new_isExpandedChat) ytBtnCollapseChat()
  524.         if (new_isExpandEPanel) ytBtnCloseEngagementPanels();
  525.  
  526.  
  527.         timeline.setTimeout(unlock, 40);
  528.  
  529.       })
  530.  
  531.     }
  532.  
  533.  
  534.     if (new_isExpandedChat || new_isTabExpanded || new_isExpandEPanel) {
  535.       if (statusCollasped !== 1) statusCollasped = 1;
  536.     } else {
  537.       if (statusCollasped === 1) statusCollasped = 2;
  538.     }
  539.  
  540.     let changes = 0;
  541.  
  542.     if (old_layoutStatus !== null) changes = old_layoutStatus ^ new_layoutStatus;
  543.  
  544.     let chat_collasped_changed = !!(changes & LAYOUT_CHATROOM_COLLASPED)
  545.     let tab_expanded_changed = !!(changes & LAYOUT_TAB_EXPANDED)
  546.     let theater_mode_changed = !!(changes & LAYOUT_THEATER)
  547.     let column_mode_changed = !!(changes & LAYOUT_TWO_COLUMNS)
  548.     let fullscreen_mode_changed = !!(changes & LAYOUT_FULLSCREEN)
  549.     let epanel_expanded_changed = !!(changes & LAYOUT_ENGAGEMENT_PANEL_EXPAND)
  550.  
  551.     let tab_change = (tab_expanded_changed ? 1 : 0) | (chat_collasped_changed ? 2 : 0) | (epanel_expanded_changed ? 4 : 0);
  552.  
  553.     let isChatOrTabExpandTriggering = tab_change == 0 ? false : (
  554.       (tab_expanded_changed && new_isTabExpanded) ||
  555.       (chat_collasped_changed && new_isExpandedChat) ||
  556.       (epanel_expanded_changed && new_isExpandEPanel)
  557.     );
  558.  
  559.     let isChatOrTabCollaspeTriggering = tab_change == 0 ? false : (
  560.       (tab_expanded_changed && !new_isTabExpanded) ||
  561.       (chat_collasped_changed && new_isCollaspedChat) ||
  562.       (epanel_expanded_changed && !new_isExpandEPanel)
  563.     );
  564.  
  565.  
  566.  
  567.     let moreThanOneShown = (new_isTabExpanded + new_isExpandedChat + new_isExpandEPanel) > 1
  568.  
  569.     let requestVideoResize = false;
  570.  
  571.     if (fullscreen_mode_changed || new_isFullScreen) {
  572.  
  573.     } else if (tab_change == 0 && column_mode_changed && new_isTwoColumns && !new_isTheater && statusCollasped === 1 && moreThanOneShown) {
  574.  
  575.       showTabOrChat();
  576.       requestVideoResize = true;
  577.  
  578.     } else if (tab_change == 2 && new_isExpandedChat && new_isTwoColumns && !new_isTheater && statusCollasped === 1 && new_isTabExpanded && !column_mode_changed) {
  579.  
  580.       switchTabActivity(null);
  581.       requestVideoResize = true;
  582.  
  583.     } else if (isChatOrTabExpandTriggering && new_isTwoColumns && new_isTheater && statusCollasped === 1 && !theater_mode_changed && !column_mode_changed) {
  584.  
  585.       ytBtnCancelTheater();
  586.       requestVideoResize = true;
  587.  
  588.     } else if (new_isTwoColumns && new_isTheater && statusCollasped === 1) {
  589.  
  590.       hideTabAndChat();
  591.       requestVideoResize = true;
  592.  
  593.     } else if (isChatOrTabCollaspeTriggering && new_isTwoColumns && !new_isTheater && statusCollasped === 2 && !column_mode_changed) {
  594.  
  595.       ytBtnSetTheater();
  596.       requestVideoResize = true;
  597.  
  598.     } else if (tab_change == 0 && (column_mode_changed || theater_mode_changed) && new_isTwoColumns && !new_isTheater && statusCollasped !== 1) {
  599.  
  600.       showTabOrChat();
  601.       requestVideoResize = true;
  602.  
  603.     } else if (!new_isFullScreen && new_isTwoColumns && !new_isTheater && !new_isTabExpanded &&
  604.       (new_isCollaspedChat || !new_isExpandedChat) &&
  605.       !new_isExpandEPanel
  606.     ) {
  607.       // bug fix for restoring from mini player
  608.  
  609.       layoutStatusMutex.lockWith(unlock => {
  610.  
  611.         if (new_isExpandedChat) ytBtnCollapseChat()
  612.         setToActiveTab();
  613.  
  614.         timeline.setTimeout(unlock, 40);
  615.  
  616.       })
  617.  
  618.       requestVideoResize = true;
  619.  
  620.     } else if (tab_expanded_changed) {
  621.  
  622.       requestVideoResize = true;
  623.  
  624.     }
  625.  
  626.  
  627.     if (column_mode_changed && !chat_collasped_changed && new_isExpandedChat) {
  628.  
  629.       runAfterExpandChat();
  630.  
  631.     }
  632.  
  633.  
  634.  
  635.     if (requestVideoResize) {
  636.  
  637.       timeout_resize_for_layout_change.clear();
  638.       timeout_resize_for_layout_change.set(() => {
  639.         dispatchWindowResize();
  640.       }, 92)
  641.  
  642.     } else if (timeout_resize_for_layout_change.isEmpty() && (Date.now()) - lastResizeAt > 600) {
  643.       timeout_resize_for_layout_change.set(() => {
  644.         if ((Date.now()) - lastResizeAt > 600) dispatchWindowResize();
  645.       }, 62)
  646.     }
  647.  
  648.  
  649.  
  650.  
  651.   }
  652.  
  653.  
  654.   const $ws = {
  655.     _layoutStatus: null,
  656.     layoutStatus_pending: false
  657.   }
  658.  
  659.   let wls = new class {
  660.     get layoutStatus() {
  661.       return this._layoutStatus;
  662.     }
  663.     set layoutStatus(nv) {
  664.  
  665.       if (nv === null) {
  666.         this._layoutStatus = null;
  667.         statusCollasped = 0;
  668.         return;
  669.       }
  670.       if (nv === this._layoutStatus) return;
  671.  
  672.       if (!this.layoutStatus_pending) {
  673.         this.layoutStatus_pending = true;
  674.         const old_layoutStatus = this._layoutStatus;
  675.  
  676.         layoutStatusMutex.lockWith(unlock => {
  677.  
  678.           this.layoutStatus_pending = false;
  679.           const new_layoutStatus = this._layoutStatus;
  680.           layoutStatusChanged(old_layoutStatus, new_layoutStatus);
  681.  
  682.           timeline.setTimeout(unlock, 40)
  683.  
  684.  
  685.         })
  686.       }
  687.  
  688.       this._layoutStatus = nv;
  689.     }
  690.   };
  691.  
  692.  
  693.  
  694.  
  695.   const svgElm = (w, h, vw, vh, p) => `<svg width="${w}" height="${h}" viewBox="0 0 ${vw} ${vh}" preserveAspectRatio="xMidYMid meet">${p}</svg>`
  696.  
  697.   let settings = {
  698.     defaultTab: "#tab-videos"
  699.   };
  700.  
  701.  
  702.   let mtoInterval = mtoInterval1;
  703.  
  704.   function isVideoPlaying(video) {
  705.     return video.currentTime > 0 && !video.paused && !video.ended && video.readyState > video.HAVE_CURRENT_DATA;
  706.   }
  707.  
  708.   function wAttr(elm, attr, kv) {
  709.     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) }
  710.   }
  711.  
  712.   function hideTabBtn(tabBtn) {
  713.     let isActiveBefore = tabBtn.classList.contains('active');
  714.     tabBtn.classList.add("tab-btn-hidden");
  715.     if (isActiveBefore) {
  716.       setToActiveTab();
  717.     }
  718.   }
  719.  
  720.   function hasAttribute(obj, key) {
  721.     return obj && obj.hasAttribute(key);
  722.   }
  723.  
  724.   function isTheater() {
  725.     const cssElm = kRef(ytdFlexy);
  726.     return (cssElm && cssElm.hasAttribute('theater'))
  727.   }
  728.  
  729.   function isFullScreen() {
  730.     const cssElm = kRef(ytdFlexy);
  731.     return (cssElm && cssElm.hasAttribute('fullscreen'))
  732.   }
  733.  
  734.   function isChatExpand() {
  735.     const cssElm = kRef(ytdFlexy);
  736.     return cssElm && cssElm.hasAttribute('userscript-chatblock') && !cssElm.hasAttribute('userscript-chat-collapsed')
  737.   }
  738.  
  739.   function isWideScreenWithTwoColumns() {
  740.     const cssElm = kRef(ytdFlexy);
  741.     return (cssElm && cssElm.hasAttribute('is-two-columns_'))
  742.   }
  743.  
  744.   function isAnyActiveTab() {
  745.     return $('#right-tabs .tab-btn.active').length > 0
  746.   }
  747.  
  748.   function isEngagementPanelExpanded() { //note: not checking the visual elements
  749.     const cssElm = kRef(ytdFlexy);
  750.     return (cssElm && +cssElm.getAttribute('userscript-engagement-panel') > 0)
  751.   }
  752.  
  753.   function engagement_panels_() {
  754.  
  755.     let res = [];
  756.     let shownRes = [];
  757.  
  758.     let v = 0,
  759.       k = 1,
  760.       count = 0;
  761.       
  762.     for (const ePanel of document.querySelectorAll(
  763.       `ytd-watch-flexy ytd-engagement-panel-section-list-renderer[o3r-${sa_epanel}]`
  764.       )) {
  765.  
  766.       let visibility = ePanel.getAttribute('visibility') //ENGAGEMENT_PANEL_VISIBILITY_EXPANDED //ENGAGEMENT_PANEL_VISIBILITY_HIDDEN
  767.  
  768.       switch (visibility) {
  769.         case 'ENGAGEMENT_PANEL_VISIBILITY_EXPANDED':
  770.           v |= k;
  771.           count++;
  772.           shownRes.push(ePanel)
  773.           res.push({ ePanel, k, visible: true });
  774.           break;
  775.         case 'ENGAGEMENT_PANEL_VISIBILITY_HIDDEN':
  776.           res.push({ ePanel, k, visible: false });
  777.           break;
  778.         default:
  779.           res.push({ ePanel, k, visible: false });
  780.       }
  781.  
  782.       k = k << 1;
  783.  
  784.     }
  785.     return { list: res, value: v, count: count, shownRes };
  786.   }
  787.  
  788.  
  789.   function ytBtnOpenEngagementPanel(panel_id) {
  790.  
  791.     if (typeof panel_id == 'string') {
  792.       panel_id = panel_id.replace('#engagement-panel-', '');
  793.       panel_id = parseInt(panel_id);
  794.     }
  795.     if (panel_id >= 0) {} else return false;
  796.  
  797.     let panels = engagement_panels_();
  798.  
  799.     for (const { ePanel, k, visible } of panels.list) {
  800.       if ((panel_id & k) === k) {
  801.         if (!visible) ePanel.setAttribute('visibility', "ENGAGEMENT_PANEL_VISIBILITY_EXPANDED");
  802.       } else {
  803.         if (visible) ytBtnCloseEngagementPanel(ePanel);
  804.       }
  805.     }
  806.  
  807.   }
  808.  
  809.   function ytBtnCloseEngagementPanel(s) {
  810.     //ePanel.setAttribute('visibility',"ENGAGEMENT_PANEL_VISIBILITY_HIDDEN");
  811.     let btn = s.querySelector('ytd-watch-flexy ytd-engagement-panel-title-header-renderer #header>#visibility-button>ytd-button-renderer');
  812.     if (btn) {
  813.       btn.click();
  814.     }
  815.   }
  816.  
  817.   function ytBtnCloseEngagementPanels() {
  818.     if (isEngagementPanelExpanded()) {
  819.       for (const s of document.querySelectorAll(
  820.         `ytd-watch-flexy ytd-engagement-panel-section-list-renderer[o3r-${sa_epanel}]`
  821.         )) {
  822.         if (s.getAttribute('visibility') == "ENGAGEMENT_PANEL_VISIBILITY_EXPANDED") ytBtnCloseEngagementPanel(s);
  823.       }
  824.     }
  825.   }
  826.  
  827.   function ytBtnSetTheater() {
  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 ytBtnCancelTheater() {
  835.     if (isTheater()) {
  836.       const sizeBtn = document.querySelector('ytd-watch-flexy #ytd-player button.ytp-size-button')
  837.       if (sizeBtn) sizeBtn.click();
  838.     }
  839.   }
  840.  
  841.   function ytBtnExpandChat() {
  842.     let button = document.querySelector('ytd-live-chat-frame#chat[collapsed]>.ytd-live-chat-frame#show-hide-button')
  843.     if (button) button.querySelector('ytd-toggle-button-renderer').click();
  844.   }
  845.  
  846.   function ytBtnCollapseChat() {
  847.     let button = document.querySelector('ytd-live-chat-frame#chat:not([collapsed])>.ytd-live-chat-frame#show-hide-button')
  848.     if (button) button.querySelector('ytd-toggle-button-renderer').click();
  849.   }
  850.  
  851. /*
  852.   function hackImgShadow(imgShadow) {
  853.     // add to #columns and add back after loaded
  854.     let img = imgShadow.querySelector('img')
  855.     if (!img) return;
  856.  
  857.     let p = imgShadow.parentNode
  858.     let z = $(imgShadow).clone()[0]; //to occupy the space
  859.     p.replaceChild(z, imgShadow)
  860.     $(imgShadow).prependTo('#columns'); // refer to css hack
  861.  
  862.     function onload(evt) {
  863.       if (evt) this.removeEventListener('load', onload, false)
  864.       p.replaceChild(imgShadow, z)
  865.       p = null;
  866.       z = null;
  867.       imgShadow = null;
  868.     }
  869.  
  870.     if (img.complete) onload();
  871.     else img.addEventListener('load', onload, false)
  872.   }
  873.   */
  874.  
  875.  
  876.   const Q = {}
  877.   const FOnce = {}
  878.  
  879.   const $callOnce = function(key) {
  880.     if (FOnce[key] && FOnce[key]() === false) FOnce[key] = null
  881.   }
  882.   const $callOnceAsync = async function(key) {
  883.     if (FOnce[key] && FOnce[key]() === false) FOnce[key] = null
  884.   }
  885.  
  886.  
  887.  
  888.   function chatFrameContentDocument() {
  889.     // non-null if iframe exist && contentDocument && readyState = complete
  890.  
  891.     let iframe = document.querySelector('ytd-live-chat-frame iframe#chatframe');
  892.     if (!iframe) return null; //iframe must be there
  893.     let cDoc = null;
  894.     try {
  895.       cDoc = iframe.contentDocument;
  896.     } catch (e) {}
  897.     if (!cDoc) return null;
  898.     if (cDoc.readyState != 'complete') return null; //we must wait for its completion
  899.  
  900.     return cDoc;
  901.  
  902.   }
  903.  
  904.   function chatFrameElement(cssSelector) {
  905.     let cDoc = chatFrameContentDocument();
  906.     if (!cDoc) return null;
  907.     let elm = null;
  908.     try {
  909.       elm = cDoc.querySelector(cssSelector)
  910.     } catch (e) {
  911.       console.log('iframe error', e)
  912.     }
  913.     return elm;
  914.   }
  915.  
  916.  
  917.  
  918.  
  919.   function fixTabs() {
  920.  
  921.  
  922.     if (!scriptEnable) return;
  923.  
  924.  
  925.     let queryElement = document.querySelector('*:not(#tab-videos)>#related:not([non-placeholder-videos]) > ytd-watch-next-secondary-results-renderer')
  926.  
  927.     let isRelocated = !!queryElement;
  928.  
  929.  
  930.  
  931.     if (isRelocated) {
  932.  
  933.       let relocatedRelated = queryElement.parentNode; // NOT NULL
  934.  
  935.       let right_tabs = document.querySelector('#right-tabs');
  936.       let tab_videos = right_tabs.querySelector("#tab-videos");
  937.  
  938.       if (!right_tabs || !tab_videos) return;
  939.  
  940.       for (const s of relocatedRelated.querySelectorAll('#related')) {
  941.         s.setAttribute('non-placeholder-videos', '')
  942.       }
  943.  
  944.       let target_container = document.querySelector('ytd-watch-flexy:not([is-two-columns_]) #primary-inner, ytd-watch-flexy[is-two-columns_] #secondary-inner')
  945.  
  946.       if (target_container) target_container.append(right_tabs) // last-child
  947.  
  948.  
  949.       let videos_related = relocatedRelated; // NOT NULL
  950.       $('[placeholder-videos]').removeAttr('placeholder-videos');
  951.       $('[placeholder-for-youtube-play-next-queue]').removeAttr('placeholder-for-youtube-play-next-queue');
  952.  
  953.       tab_videos.appendChild(videos_related);
  954.       let videos_results_renderer = relocatedRelated.querySelector("ytd-watch-next-secondary-results-renderer");
  955.       if (videos_results_renderer) videos_results_renderer.setAttribute('data-dom-changed-by-tabview-youtube', scriptVersionForExternal);
  956.       videos_related.setAttribute('placeholder-for-youtube-play-next-queue', '')
  957.       videos_related.setAttribute('placeholder-videos', '')
  958.  
  959.       $('[placeholder-videos]').on("scroll", makeBodyScrollByEvt);
  960.  
  961.  
  962.  
  963.  
  964.     }
  965.  
  966.  
  967.  
  968.  
  969.     let chatroom = null;
  970.     if (chatroom = document.querySelector('*:not([data-positioner="before|#chat"]) + ytd-live-chat-frame#chat, ytd-live-chat-frame#chat:first-child')) {
  971.  
  972.       let positioner = document.querySelector('tabview-youtube-positioner[data-positioner="before|#chat"]');
  973.       if (positioner) positioner.remove();
  974.  
  975.  
  976.       if (document.querySelector('.YouTubeLiveFilledUpView')) {
  977.         // no relocation
  978.       } else {
  979.  
  980.         $(chatroom).insertBefore('#right-tabs')
  981.  
  982.       }
  983.  
  984.  
  985.       $(positioner ? positioner : document.createElement('tabview-youtube-positioner')).attr('data-positioner', 'before|#chat').insertBefore(chatroom)
  986.  
  987.  
  988.  
  989.     }
  990.  
  991.  
  992.   }
  993.  
  994.   function handlerAutoCompleteExist() {
  995.  
  996.  
  997.     let autoComplete = this;
  998.  
  999.     autoComplete.removeEventListener('autocomplete-sc-exist', handlerAutoCompleteExist, false)
  1000.  
  1001.     let domId = autoComplete.getAttribute('data-autocomplete-input-id')
  1002.     let searchBox = autoComplete.ownerDocument.querySelector(`[data-autocomplete-results-id="${domId}"]`)
  1003.  
  1004.     if (!domId || !searchBox) return;
  1005.  
  1006.     let positioner = searchBox.nextSibling;
  1007.     if (positioner && positioner.nodeName.toLowerCase() == "autocomplete-positioner") {} else if (positioner && positioner.nodeName.toLowerCase() != "autocomplete-positioner") {
  1008.       $(positioner = document.createElement("autocomplete-positioner")).insertAfter(searchBox);
  1009.     } else {
  1010.       $(positioner = document.createElement("autocomplete-positioner")).prependTo(searchBox.parentNode);
  1011.     }
  1012.     $(autoComplete).prependTo(positioner);
  1013.  
  1014.     positioner.style.setProperty('--sb-margin-bottom', getComputedStyle(searchBox).marginBottom)
  1015.     positioner.style.setProperty('--height', searchBox.offsetHeight + 'px')
  1016.  
  1017.   }
  1018.  
  1019.   function mtf_fixAutoCompletePosition(elmAutoComplete) {
  1020.  
  1021.  
  1022.     elmAutoComplete.setAttribute('autocomplete-disable-updatesc', '')
  1023.     elmAutoComplete.addEventListener('autocomplete-sc-exist', handlerAutoCompleteExist, false)
  1024.  
  1025.     if(document.querySelector('script#userscript-tabview-injection-facp')) return;
  1026.     
  1027.     if (isMyScriptInChromeRuntime()){
  1028.       addScriptByURL(window.chrome.runtime.getURL('js/injectionScript_fixAutoComplete.js')).id = 'userscript-tabview-injection-facp';;
  1029.     } else {
  1030.       let injection_script = GM_getResourceText("injectionFixAutoComplete")
  1031.       addScript(`${injection_script}`).id = 'userscript-tabview-injection-facp';;
  1032.     }
  1033.  
  1034.   }
  1035.  
  1036.   function mtf_AfterFixTabs() {
  1037.  
  1038.  
  1039.     let ytdFlexyElm = kRef(ytdFlexy);
  1040.     if (!scriptEnable || !ytdFlexyElm) return;
  1041.  
  1042.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1043.  
  1044.  
  1045.  
  1046.     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])')
  1047.  
  1048.     if (autocomplete) {
  1049.  
  1050.       const searchBox = document.querySelector('[placeholder-for-youtube-play-next-queue] input#suggestions-search')
  1051.  
  1052.  
  1053.       if (searchBox) {
  1054.  
  1055.  
  1056.         autocomplete.parentNode.setAttribute('position-fixed-by-tabview-youtube', '');
  1057.         autocomplete.setAttribute('position-fixed-by-tabview-youtube', '');
  1058.         autocomplete.setAttribute('userscript-scrollbar-render', '')
  1059.  
  1060.         if (!searchBox.hasAttribute('is-set-click-to-toggle')) {
  1061.           searchBox.setAttribute('is-set-click-to-toggle', '')
  1062.           searchBox.addEventListener('click', function() {
  1063.  
  1064.  
  1065.             setTimeout(() => {
  1066.               const autocomplete = document.querySelector(`.autocomplete-suggestions[data-autocomplete-input-id="${ this.getAttribute('data-autocomplete-results-id') }"]`)
  1067.  
  1068.               if (!autocomplete) return;
  1069.  
  1070.               const isNotEmpty = (autocomplete.textContent || '').length > 0 && (this.value || '').length > 0;
  1071.  
  1072.               if (isNotEmpty) {
  1073.  
  1074.                 let elmVisible = isDOMVisible(autocomplete)
  1075.  
  1076.                 if (elmVisible) $(autocomplete).hide();
  1077.                 else $(autocomplete).show();
  1078.  
  1079.               }
  1080.  
  1081.             }, 20);
  1082.  
  1083.           })
  1084.  
  1085.           let timeoutOnce_searchbox_keyup = new Timeout();
  1086.           searchBox.addEventListener('keyup', function() {
  1087.  
  1088.             timeoutOnce_searchbox_keyup.set(() => {
  1089.  
  1090.               const autocomplete = document.querySelector(`.autocomplete-suggestions[data-autocomplete-input-id="${ this.getAttribute('data-autocomplete-results-id') }"]`)
  1091.  
  1092.               if (!autocomplete) return;
  1093.  
  1094.  
  1095.               const isNotEmpty = (autocomplete.textContent || '').length > 0 && (this.value || '').length > 0
  1096.  
  1097.               if (isNotEmpty) {
  1098.  
  1099.                 let elmVisible = isDOMVisible(autocomplete)
  1100.  
  1101.                 if (!elmVisible) $(autocomplete).show();
  1102.  
  1103.               }
  1104.  
  1105.             }, 20);
  1106.  
  1107.           })
  1108.  
  1109.         }
  1110.  
  1111.  
  1112.  
  1113.       }
  1114.  
  1115.     }
  1116.  
  1117.  
  1118.  
  1119.  
  1120.     let currentLastVideo = rootElement.querySelector('[placeholder-videos] #items ytd-compact-video-renderer:last-of-type')
  1121.     let prevLastVideo = kRef(_cachedLastVideo);
  1122.  
  1123.     if (prevLastVideo !== currentLastVideo && currentLastVideo) {
  1124.       _cachedLastVideo = mWeakRef(currentLastVideo);
  1125.     }
  1126.  
  1127.     if (prevLastVideo !== currentLastVideo && currentLastVideo && prevLastVideo) {
  1128.  
  1129.       let isPrevRemoved = !prevLastVideo.parentNode
  1130.  
  1131.  
  1132.       function getVideoListHash() {
  1133.  
  1134.         let res = [...document.querySelectorAll('[placeholder-videos] #items ytd-compact-video-renderer')].map(renderer => {
  1135.           return renderer.querySelector('a[href*="watch"][href*="v="]').getAttribute('href')
  1136.  
  1137.         }).join('|')
  1138.         // /watch?v=XXXXX|/watch?v=XXXXXX|/watch?v=XXXXXX
  1139.  
  1140.         // alternative - DOM.data.videoId
  1141.         // let elms = document.querySelectorAll('[placeholder-videos] #items ytd-compact-video-renderer')
  1142.         // let res = [...elms].map(elm=>elm.data.videoId||'').join('|') ;
  1143.  
  1144.         if (res.indexOf('||') >= 0) {
  1145.           res = '';
  1146.         }
  1147.  
  1148.         return res ? res : null;
  1149.       }
  1150.  
  1151.       if (isPrevRemoved) {
  1152.  
  1153.         // this is the replacement of videos instead of addition
  1154.  
  1155.         const searchBox = document.querySelector('[placeholder-for-youtube-play-next-queue] input#suggestions-search')
  1156.  
  1157.         let currentPlayListHash = getVideoListHash() || null;
  1158.  
  1159.         if (!currentPlayListHash) {
  1160.  
  1161.         } else if (!videoListBeforeSearch && searchBox) {
  1162.  
  1163.           videoListBeforeSearch = currentPlayListHash;
  1164.           if (videoListBeforeSearch) {
  1165.             //console.log('fromSearch', videoListBeforeSearch)
  1166.  
  1167.             requestAnimationFrame(function() {
  1168.  
  1169.               let renderer = document.querySelector('[placeholder-videos] ytd-watch-next-secondary-results-renderer');
  1170.               if (searchBox && searchBox.parentNode) searchBox.blur();
  1171.  
  1172.               if (renderer) {
  1173.                 let scrollParent = renderer.parentNode;
  1174.                 if (scrollParent.scrollHeight > scrollParent.offsetHeight) {
  1175.                   let targetTop = renderer.offsetTop;
  1176.                   if (searchBox && searchBox.parentNode == scrollParent) targetTop -= searchBox.offsetHeight
  1177.                   scrollParent.scrollTop = targetTop - scrollParent.firstChild.offsetTop;
  1178.                 }
  1179.               }
  1180.  
  1181.             });
  1182.  
  1183.           }
  1184.  
  1185.         } else if (videoListBeforeSearch) {
  1186.  
  1187.           if (currentPlayListHash != videoListBeforeSearch) {
  1188.  
  1189.             videoListBeforeSearch = null;
  1190.             //console.log('fromSearch', videoListBeforeSearch)
  1191.  
  1192.  
  1193.           }
  1194.  
  1195.         }
  1196.  
  1197.  
  1198.       }
  1199.  
  1200.  
  1201.     }
  1202.  
  1203.  
  1204.  
  1205.  
  1206.   }
  1207.  
  1208.   function base_ChatExist() {
  1209.  
  1210.     let ytdFlexyElm = kRef(ytdFlexy);
  1211.     if (!scriptEnable || !ytdFlexyElm) return null;
  1212.  
  1213.     // no mutation triggering if the changes are inside the iframe 
  1214.  
  1215.     // 1) Detection of #continuations inside iframe
  1216.     // iframe ownerDocument is accessible due to same origin
  1217.     // if the chatroom is collasped, no determination of live chat or replay (as no #continuations and somehow a blank iframe doc)
  1218.  
  1219.     // 2) Detection of meta tag
  1220.     // This is fastest but not reliable. It is somehow a bug that the navigation might not update the meta tag content
  1221.  
  1222.     // 3) Detection of HTMLElement inside video player for live video
  1223.  
  1224.     // (1)+(3) = solution
  1225.  
  1226.     let attr_chatblock = null
  1227.     let attr_chatcollapsed = null;
  1228.  
  1229.     const elmChat = document.querySelector('ytd-live-chat-frame#chat')
  1230.     let elmCont = null;
  1231.     if (elmChat) {
  1232.       elmCont = chatFrameElement('yt-live-chat-renderer #continuations')
  1233.  
  1234.  
  1235.       let s = 0;
  1236.       if (elmCont) {
  1237.         //not found if it is collasped.
  1238.         s |= elmCont.querySelector('yt-timed-continuation') ? 1 : 0;
  1239.         s |= elmCont.querySelector('yt-live-chat-replay-continuation, yt-player-seek-continuation') ? 2 : 0;
  1240.         //s |= elmCont.querySelector('yt-live-chat-restricted-participation-renderer')?4:0;
  1241.         if (s == 1) {
  1242.           attr_chatblock = 'chat-live';
  1243.         }else if (s == 2) attr_chatblock = 'chat-playback';
  1244.  
  1245.         if (s == 1) $("span#tab3-txt-loader").text('');
  1246.  
  1247.       } else if (!ytdFlexyElm.hasAttribute('userscript-chatblock')) {
  1248.         // live chat frame but type not known
  1249.           
  1250.         attr_chatblock = '';
  1251.  
  1252.       }
  1253.       //keep unknown as original    
  1254.       
  1255.       
  1256.       let isCollapsed = !!elmChat.hasAttribute('collapsed');
  1257.       attr_chatcollapsed = isCollapsed;
  1258.  
  1259.     } else {
  1260.       attr_chatblock = false;
  1261.       attr_chatcollapsed = false;
  1262.  
  1263.     }
  1264.  
  1265.     return { attr_chatblock, attr_chatcollapsed }
  1266.  
  1267.   }
  1268.  
  1269.  
  1270.   function mtf_ChatExist() {
  1271.  
  1272.     let ytdFlexyElm = kRef(ytdFlexy);
  1273.     if (!scriptEnable || !ytdFlexyElm) return;
  1274.  
  1275.     if (deferredVarYTDHidden) return;
  1276.  
  1277.     const elmChat = document.querySelector('ytd-live-chat-frame#chat')
  1278.     let elmCont = null;
  1279.     if (elmChat) {
  1280.       elmCont = chatFrameElement('yt-live-chat-renderer #continuations')
  1281.     }
  1282.  
  1283.     const chatBlockR = (elmChat ? 1 : 0) + (elmCont ? 2 : 0)
  1284.     if (Q.mtf_chatBlockQ !== chatBlockR) {
  1285.       Q.mtf_chatBlockQ = chatBlockR
  1286.       let rChatExist = base_ChatExist();
  1287.       //console.log(2446, rChatExist)
  1288.       if (rChatExist) {
  1289.         let { attr_chatblock, attr_chatcollapsed } = rChatExist;
  1290.         wAttr(ytdFlexyElm, 'userscript-chatblock', attr_chatblock)
  1291.         wAttr(ytdFlexyElm, 'userscript-chat-collapsed', attr_chatcollapsed)
  1292.         
  1293.         if(attr_chatblock=='chat-live') _disableComments();
  1294.       }
  1295.     }
  1296.  
  1297.   }
  1298.  
  1299.  
  1300.  
  1301.  
  1302.   let lastScrollAt1 = 0;
  1303.  
  1304.   function makeBodyScrollByEvt() {
  1305.     let ct = Date.now();
  1306.     if (ct - lastScrollAt1 < 6) return; // avoid duplicate calling
  1307.     lastScrollAt1 = ct;
  1308.     window.dispatchEvent(new Event("scroll")); // dispatch Scroll Event to Window for content display
  1309.   }
  1310.  
  1311.   let lastScrollAt2 = 0;
  1312.  
  1313.   function makeBodyScroll() {
  1314.     let ct = Date.now();
  1315.     if (ct - lastScrollAt2 < 30) return; // avoid over triggering
  1316.     lastScrollAt2 = ct;
  1317.     requestAnimationFrame(() => {
  1318.       window.dispatchEvent(new Event("scroll")); // ask youtube to display content
  1319.     })
  1320.   }
  1321.  
  1322.   //let requestingComments = null
  1323.   //let scrollForComments_lastStart = 0;
  1324.    /*
  1325.   function scrollForComments_TF() {
  1326.  
  1327.     let comments = requestingComments;
  1328.     if (!comments) return;
  1329.     if (comments.hasAttribute('hidden')) {
  1330.       window.dispatchEvent(new Event("scroll"));
  1331.     } else requestingComments = null;
  1332.  
  1333.   }
  1334.   function scrollForComments() {
  1335.     scrollForComments_TF();
  1336.     if (!requestingComments) return;
  1337.     requestAnimationFrame(scrollForComments_TF);
  1338.     let ct = Date.now();
  1339.     if (ct - scrollForComments_lastStart < 60) return;
  1340.     scrollForComments_lastStart = ct;
  1341.     timeline.setTimeout(scrollForComments_TF, 80);
  1342.     timeline.setTimeout(scrollForComments_TF, 240);
  1343.     timeline.setTimeout(scrollForComments_TF, 870);
  1344.   
  1345.   }
  1346.   */
  1347.  
  1348.  
  1349.  
  1350.   const mtoCs = { mtoNav: null, mtoBody: null };
  1351.  
  1352.  
  1353.   const mtoVs = {}
  1354.  
  1355.   const mutation_target_id_list = ['ytp-caption-window-container', 'items', 'button', 'movie_player', 'player-ads', 'hover-overlays', 'replies'];
  1356.   const mutation_target_class_list = ['ytp-panel-menu', 'ytp-endscreen-content'];
  1357.  
  1358.   function isMtoOverallSkip(dTarget) {
  1359.  
  1360.     if (!dTarget || dTarget.nodeType !== 1) return true;
  1361.  
  1362.     if (mutation_target_id_list.includes(dTarget.id)) return true;
  1363.  
  1364.     for (const c of dTarget.classList) {
  1365.       if (mutation_target_class_list.includes(c)) return true;
  1366.     }
  1367.  
  1368.     return false;
  1369.   }
  1370.  
  1371.  
  1372.   const mutation_div_id_ignorelist = [
  1373.         'metadata-line',
  1374.         'ytp-caption-window-container',
  1375.         'top-level-buttons-computed',
  1376.         'microformat',
  1377.         'visibility-button',
  1378.         'info-strings',
  1379.         'action-menu',
  1380.         'reply-button-end'
  1381.     ];
  1382.  
  1383.   const mutation_div_class_ignorelist = [
  1384.         'badge', 'tp-yt-paper-tooltip', 'ytp-autonav-endscreen-upnext-header',
  1385.         'ytp-bound-time-left', 'ytp-bound-time-right', 'ytp-share-icon',
  1386.         'ytp-tooltip-title', 'annotation', 'ytp-copylink-icon', 'ytd-thumbnail',
  1387.         'paper-ripple',
  1388.         //caption
  1389.         'captions-text', 'caption-visual-line', 'ytp-caption-segment', 'ytp-caption-window-container',
  1390.         //menu
  1391.         'ytp-playlist-menu-button-text',
  1392.  
  1393.         'ytp-bezel-icon', 'ytp-bezel-text',
  1394.         'dropdown-content',
  1395.         'tp-yt-paper-menu-button', 'tp-yt-iron-dropdown',
  1396.  
  1397.         'ytd-metadata-row-renderer', // #content.ytd-metadata-row-renderer inside each of ytd-metadata-row-renderer (ytd-expander)
  1398.         '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
  1399.  
  1400.         'autocomplete-suggestions' // autocomplete-suggestions
  1401.     ];
  1402.  
  1403.   const mutation_target_tag_ignorelist = [
  1404.         'ytd-channel-name', 'tp-yt-iron-dropdown', 'tp-yt-paper-tooltip',
  1405.         'tp-yt-paper-listbox', 'yt-img-shadow', 'ytd-thumbnail', 'ytd-video-meta-block',
  1406.  
  1407.         'yt-icon-button', 'tp-yt-paper-button', 'yt-formatted-string', 'yt-icon', 'button', 'paper-ripple',
  1408.  
  1409.         'ytd-player-microformat-renderer',
  1410.         'ytd-engagement-panel-section-list-renderer', 'ytd-engagement-panel-title-header-renderer',
  1411.         'ytd-comment-renderer', 'ytd-menu-renderer', 'ytd-badge-supported-renderer',
  1412.         'ytd-subscribe-button-renderer', 'ytd-subscription-notification-toggle-button-renderer',
  1413.         'ytd-button-renderer', 'ytd-toggle-button-renderer',
  1414.         'yt-pdg-comment-chip-renderer', 'ytd-comment-action-buttons-renderer', 'ytd-comment-thread-renderer',
  1415.         'ytd-compact-radio-renderer', 'ytd-compact-video-renderer',
  1416.         'ytd-video-owner-renderer',
  1417.         'ytd-metadata-row-renderer', //ytd-metadata-row-renderer is part of the #collapsible inside ytd-expander
  1418.  
  1419.         'ytd-moving-thumbnail-renderer',
  1420.         'ytd-thumbnail-overlay-toggle-button-renderer',
  1421.         'ytd-thumbnail-overlay-bottom-panel-renderer', 'ytd-thumbnail-overlay-equalizer',
  1422.         'ytd-thumbnail-overlay-now-playing-renderer', 'ytd-thumbnail-overlay-resume-playback-renderer',
  1423.         'ytd-thumbnail-overlay-side-panel-renderer', 'ytd-thumbnail-overlay-time-status-renderer',
  1424.         'ytd-thumbnail-overlay-hover-text-renderer',
  1425.  
  1426.         'yt-interaction',
  1427.         'tp-yt-paper-spinner-lite', 'tp-yt-paper-spinner',
  1428.  
  1429.         'h1', 'h2', 'h3', 'h4', 'h5', 'span', 'a',
  1430.  
  1431.         'meta', 'br', 'script', 'style', 'link', 'dom-module', 'template'
  1432.     ];
  1433.  
  1434.   function isMtoTargetSkip(mutation) {
  1435.     //skip not important mutation tartget
  1436.  
  1437.     if (!mutation) return true;
  1438.     let { type, target } = mutation
  1439.  
  1440.     if (!target || target.nodeType !== 1 || type != 'childList') return true;
  1441.  
  1442.     let tagName = target.nodeName.toLowerCase();
  1443.  
  1444.     if (mutation_target_tag_ignorelist.includes(tagName)) return true;
  1445.  
  1446.     switch (tagName) {
  1447.  
  1448.  
  1449.       case 'ytd-expander':
  1450.         if (target.id == 'expander' && Q.comments_section_loaded == 1 && target.classList.contains('ytd-comment-renderer')) return true; // load comments
  1451.         return false;
  1452.  
  1453.       case 'div':
  1454.  
  1455.         if (target.id == 'contents') {
  1456.           return false;
  1457.         }
  1458.         if (mutation_div_id_ignorelist.includes(target.id)) return true;
  1459.  
  1460.         for (const c of target.classList) {
  1461.           if (mutation_div_class_ignorelist.includes(c)) return true;
  1462.         }
  1463.  
  1464.         return false;
  1465.  
  1466.     }
  1467.  
  1468.     return false;
  1469.  
  1470.   }
  1471.  
  1472.  
  1473.   function mtf_forceCheckLiveVideo() {
  1474.     // once per $$player-playback-timestamp$$ {#ytd-player .ytp-time-display} &&  $$chat-frame$$ {ytd-live-chat-frame#chat} detection
  1475.     // reset after popstatechange / videochange
  1476.  
  1477.     if(mtf_forceCheckLiveVideo_disable) return ;
  1478.  
  1479.     let ytdFlexyElm = kRef(ytdFlexy);
  1480.     if (!scriptEnable || !ytdFlexyElm) return ;
  1481.  
  1482.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1483.     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')
  1484.     if (!playerLabel) return ;
  1485.     mtf_forceCheckLiveVideo_disable = 1;
  1486.     timeline.setTimeout(FP.fireOnce_forceCheckLiveVideo_tf, 170)
  1487.     return ;
  1488.   }
  1489.  
  1490.   // continuous check for element relocation
  1491.   function mtf_append_comments() {
  1492.  
  1493.     let ytdFlexyElm = kRef(ytdFlexy);
  1494.     if (!scriptEnable || !ytdFlexyElm) return;
  1495.  
  1496.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1497.  
  1498.     let comments = rootElement.querySelector('#primary ytd-watch-metadata ~ ytd-comments#comments');
  1499.     if (comments) $(comments).appendTo('#tab-comments').attr('data-dom-changed-by-tabview-youtube', scriptVersionForExternal)
  1500.   }
  1501.  
  1502.   // continuous check for element relocation
  1503.   function mtf_liveChatBtnF() {
  1504.     let ytdFlexyElm = kRef(ytdFlexy);
  1505.     if (!scriptEnable || !ytdFlexyElm) return;
  1506.  
  1507.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1508.  
  1509.     let button = rootElement.querySelector('ytd-live-chat-frame#chat>.ytd-live-chat-frame#show-hide-button:nth-child(n+2)');
  1510.     if (button) button.parentNode.insertBefore(button, button.parentNode.firstChild)
  1511.   }
  1512.  
  1513.  
  1514.  
  1515.   // continuous check for element relocation
  1516.   // fired at begining & window resize, etc
  1517.   function mtf_append_playlist() {
  1518.  
  1519.     let ytdFlexyElm = kRef(ytdFlexy);
  1520.     if (!scriptEnable || !ytdFlexyElm) return;
  1521.  
  1522.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1523.  
  1524.     let ple1 = rootElement.querySelector("*:not(#ytd-userscript-playlist)>ytd-playlist-panel-renderer#playlist");
  1525.     if (ple1) {
  1526.       let ct = Date.now();
  1527.       let truePlaylist = null;
  1528.       let truePlaylist_items = document.querySelector('ytd-playlist-panel-renderer#playlist #items:not(:empty)');
  1529.       if (truePlaylist_items) {
  1530.  
  1531.         let pElm = truePlaylist_items.parentNode;
  1532.         while (pElm && pElm.nodeType === 1) {
  1533.           if (pElm.id == 'playlist') {
  1534.             pElm.setAttribute('tabview-true-playlist', ct)
  1535.             truePlaylist = pElm;
  1536.             break;
  1537.           }
  1538.           pElm = pElm.parentNode;
  1539.         }
  1540.  
  1541.       }
  1542.  
  1543.       if (!truePlaylist) truePlaylist = ple1; // NOT NULL
  1544.  
  1545.       for (const s of document.querySelectorAll(`*:not(#ytd-userscript-playlist)>ytd-playlist-panel-renderer#playlist:not([tabview-true-playlist="${ct}"])`))
  1546.         s.parentNode.removeChild(s);
  1547.  
  1548.       let $wrapper = getWrapper('ytd-userscript-playlist')
  1549.       $wrapper.append(truePlaylist).appendTo(document.querySelector("#tab-list"));
  1550.       truePlaylist.setAttribute('data-dom-changed-by-tabview-youtube', scriptVersionForExternal)
  1551.       setDisplayedPlaylist(); // relocation after re-layout
  1552.  
  1553.       requestAnimationFrame(() => {
  1554.         let ytdFlexyElm = kRef(ytdFlexy);
  1555.         if (!scriptEnable || !ytdFlexyElm) return;
  1556.         if (!switchTabActivity_lastTab && (ytdFlexyElm.getAttribute('tabview-selection') + '').indexOf('#tab-') === 0 && /https\:\/\/www\.youtube\.com\/watch.*[\?\&]list=[\w\-\_]+/.test(location.href)) {
  1557.           if (setToActiveTab('#tab-list')) switchTabActivity_lastTab = '#tab-list';
  1558.         }
  1559.       })
  1560.  
  1561.     }
  1562.   }
  1563.  
  1564.  
  1565.   // content fix - info & playlist
  1566.   // fired at begining, and keep for in case any change
  1567.   function mtf_fix_details() {
  1568.  
  1569.     if (!scriptEnable) return;
  1570.  
  1571.     if (no_fix_contents_until < Date.now()) {
  1572.       const content = document.querySelector('#meta-contents ytd-expander>#content, #tab-info ytd-expander>#content')
  1573.       if (content) {
  1574.         no_fix_contents_until = Date.now() + 3000;
  1575.         timeline.setTimeout(function() {
  1576.           const expander = content.parentNode;
  1577.  
  1578.           if (expander.hasAttribute('collapsed')) wAttr(expander, 'collapsed', false);
  1579.           expander.style.setProperty('--ytd-expander-collapsed-height', '');
  1580.  
  1581.           let btn1 = expander.querySelector('tp-yt-paper-button#less:not([hidden])');
  1582.           let btn2 = expander.querySelector('tp-yt-paper-button#more:not([hidden])');
  1583.  
  1584.           if (btn1) wAttr(btn1, 'hidden', true);
  1585.           if (btn2) wAttr(btn2, 'hidden', true);
  1586.         }, 40);
  1587.  
  1588.       }
  1589.     }
  1590.  
  1591.     if (no_fix_playlist_until < Date.now()) {
  1592.       // just in case the playlist is collapsed
  1593.       const playlist = document.querySelector('#tab-list ytd-playlist-panel-renderer#playlist')
  1594.       if (playlist) {
  1595.         no_fix_playlist_until = Date.now() + 3000;
  1596.         timeline.setTimeout(function() {
  1597.           if (playlist.hasAttribute('collapsed')) wAttr(playlist, 'collapsed', false);
  1598.           if (playlist.hasAttribute('collapsible')) wAttr(playlist, 'collapsible', false);
  1599.         }, 40)
  1600.       }
  1601.     }
  1602.  
  1603.  
  1604.   }
  1605.  
  1606.  
  1607.  
  1608.   function isNullComments() {
  1609.  
  1610.     let comments = document.querySelector('ytd-comments#comments')
  1611.     if (!comments || comments.hasAttribute('hidden')) return true;
  1612.  
  1613.   }
  1614.  
  1615.  
  1616.   function getFMT(ytdFlexyElm) {
  1617.  
  1618.  
  1619.     let fmt = ["ytd-comments#comments #count.ytd-comments-header-renderer", 'ytd-item-section-renderer#sections #header ~ #contents>ytd-message-renderer'].map(s => {
  1620.  
  1621.       let elm = ytdFlexyElm.querySelector(s)
  1622.       if (!elm) return null;
  1623.       return elm.querySelector('yt-formatted-string') || elm.closest('yt-formatted-string') || null
  1624.  
  1625.  
  1626.     });
  1627.  
  1628.     return fmt
  1629.   }
  1630.  
  1631.   function toFST(elm) {
  1632.     if (!elm) return null;
  1633.     return elm.querySelector('yt-formatted-string') || elm.closest('yt-formatted-string') || null
  1634.   }
  1635.  
  1636.   function _innerCommentsLoader(rootElement) {
  1637.  
  1638.     let ytdFlexyElm = kRef(ytdFlexy);
  1639.     if (!scriptEnable || !ytdFlexyElm) return;
  1640.     
  1641.     if (deferredVarYTDHidden) return;
  1642.  
  1643.  
  1644.     let messageElm, messageStr, commentRenderer;
  1645.     let diffCSS = `[tabview-cache-time="${sect_hTime}"]`
  1646.  
  1647.     if (commentRenderer = rootElement.querySelector(`ytd-comments#comments #count.ytd-comments-header-renderer:not(${diffCSS})`)) {
  1648.  
  1649.       scheduledCommentRefresh=false;
  1650.       let eTime = Date.now();
  1651.  
  1652.       sect_holder = mWeakRef(commentRenderer);
  1653.       sect_hText = commentRenderer.textContent;
  1654.       sect_hTime = eTime;
  1655.       commentRenderer.setAttribute('tabview-cache-time', eTime);
  1656.  
  1657.       return {
  1658.         status: 1,
  1659.         f: () => {
  1660.  
  1661.           let span = document.querySelector("span#tab3-txt-loader")
  1662.           let r = '0';
  1663.           let txt = commentRenderer.textContent
  1664.           if (typeof txt == 'string') {
  1665.             let m = txt.match(/[\d\,\s]+/)
  1666.             if (m) {
  1667.               r = m[0].trim()
  1668.  
  1669.  
  1670.             }
  1671.           }
  1672.           
  1673.           if (span){
  1674.  
  1675.             let tab_btn = span.closest('.tab-btn[userscript-tab-content="#tab-comments"]')
  1676.             if(tab_btn)tab_btn.setAttribute('loaded-comment','normal')
  1677.             span.textContent = r;
  1678.           } 
  1679.           //console.log(754)
  1680.           mtoInterval = mtoInterval2;
  1681.           scheduledCommentRefresh=false;
  1682.           setCommentSection(1);
  1683.           comments_section_loaded_elm = mWeakRef(document.querySelector('ytd-comments#comments div#contents'))
  1684.         }
  1685.       }
  1686.  
  1687.     } else if ((messageElm = rootElement.querySelector(`ytd-item-section-renderer#sections #header ~ #contents > ytd-message-renderer:not(${diffCSS})`)) && (messageStr = (messageElm.textContent || '').trim())) { //ytd-message-renderer
  1688.       // it is possible to get the message before the header generation.
  1689.       // sample link - https://www.youtube.com/watch?v=PVUZ8Nvr1ic
  1690.       // sample link - https://www.youtube.com/watch?v=yz8AiQc1Bk8
  1691.  
  1692.       scheduledCommentRefresh=false;
  1693.       let eTime = Date.now();
  1694.  
  1695.       sect_holder = mWeakRef(messageElm);
  1696.       sect_hText = messageElm.textContent;
  1697.       sect_hTime = eTime;
  1698.       messageElm.setAttribute('tabview-cache-time', eTime);
  1699.  
  1700.       return {
  1701.         status: 2,
  1702.         f: () => {
  1703.           timeline.setTimeout(function() {
  1704.             let span = document.querySelector("span#tab3-txt-loader")
  1705.             const mainMsg = messageElm.querySelector('#message, #submessage')
  1706.             if (mainMsg && mainMsg.textContent) {
  1707.               for (const msg of mainMsg.querySelectorAll('*:not(:empty)')) {
  1708.                 if (msg.childElementCount === 0 && msg.textContent) {
  1709.                   messageStr = msg.textContent.trim()
  1710.                   break
  1711.                 }
  1712.               }
  1713.             }
  1714.             if (span){
  1715.               let tab_btn = span.closest('.tab-btn[userscript-tab-content="#tab-comments"]')
  1716.               if(tab_btn)tab_btn.setAttribute('loaded-comment','message')
  1717.               span.textContent ='\u200B';
  1718.             } 
  1719.             mtoInterval = mtoInterval2;
  1720.             scheduledCommentRefresh=false;
  1721.             setCommentSection(1);
  1722.             comments_section_loaded_elm = mWeakRef(document.querySelector('ytd-comments#comments div#contents'))
  1723.           }, 40);
  1724.         }
  1725.       }
  1726.  
  1727.     }
  1728.  
  1729.   }
  1730.  
  1731.   const atChange = async ()=>{
  1732.  
  1733.     // call when video change / popstate change / switch back from mini-view
  1734.  
  1735.     let ytdFlexyElm = kRef(ytdFlexy);
  1736.     if(!ytdFlexyElm) return;
  1737.  
  1738.     mtf_forceCheckLiveVideo_disable = 0; 
  1739.     mtf_forceCheckLiveVideo();
  1740.  
  1741.     if(Q.comments_section_loaded===0){
  1742.  
  1743.       const tabBtn = document.querySelector('[userscript-tab-content="#tab-comments"].tab-btn-hidden')
  1744.       if(tabBtn) {
  1745.         tabBtn.classList.remove("tab-btn-hidden") //if contains
  1746.       }
  1747.  
  1748.     }
  1749.   }
  1750.  
  1751.  
  1752.  
  1753.   function hookSection(){
  1754.  
  1755.  
  1756.     //console.log(3300)
  1757.  
  1758.     let ytdFlexyElm = kRef(ytdFlexy);
  1759.     if (!scriptEnable || !ytdFlexyElm) return ;
  1760.  
  1761.     const comments = ytdFlexyElm.querySelector('ytd-comments#comments')
  1762.     if (!comments) return ;
  1763.  
  1764.     if(deferredVarYTDHidden) return;
  1765.  
  1766.     //console.log(3310)
  1767.  
  1768.     //new MutationObserver(function(){console.log(comments.querySelectorAll('*').length)}).observe(comments,{ attributes: true, childList: true, subtree: true })
  1769.     
  1770.  
  1771.     function foundSection(sections){
  1772.  
  1773.       
  1774.       //console.log(3320)
  1775.  
  1776.       function ulfx() {
  1777.         //console.log(1220)
  1778.  
  1779.  
  1780.         const rootElement = comments.parentNode
  1781.  
  1782.  
  1783.         if (pendingOne && comments.querySelectorAll('[tabview-cache-time]').length > 1) return;
  1784.         pendingOne = false;
  1785.         if(!rootElement) return; //prevent unknown condition
  1786.         
  1787.  
  1788.  
  1789.         let innerCommentsLoaderRet = _innerCommentsLoader(rootElement);
  1790.  
  1791.         //console.log(1222,_innerCommentsLoader)
  1792.  
  1793.         if (!innerCommentsLoaderRet) {
  1794.  
  1795.  
  1796.           let holder = kRef(sect_holder);
  1797.           if (holder && comments.contains(holder)) {
  1798.  
  1799.             if (sect_lastUpdate) return;
  1800.             sect_lastUpdate = 1;
  1801.  
  1802.             timeline.setTimeout(function() {
  1803.               //console.log(2633)
  1804.               if (holder.textContent !== sect_hText && sect_hTime > 0) {
  1805.  
  1806.                 if (comments.querySelectorAll('[tabview-cache-time]').length === 1) {
  1807.  
  1808.                   sect_hTime--;
  1809.  
  1810.                   let innerCommentsLoaderRet = _innerCommentsLoader(rootElement);
  1811.  
  1812.                   if (innerCommentsLoaderRet) {
  1813.                     //console.log(9442)
  1814.                     innerCommentsLoaderRet.f();
  1815.                     fetchCommentsFinished();
  1816.                   }
  1817.  
  1818.                   pendingOne = false;
  1819.  
  1820.                 }
  1821.  
  1822.  
  1823.               }
  1824.               sect_lastUpdate = 0
  1825.             }, 400)
  1826.  
  1827.           } else if (sect_holder) {
  1828.             sect_holder = null
  1829.             sect_hTime = 0;
  1830.             sect_lastUpdate = 0;
  1831.             pendingOne = false;
  1832.             timeline.setTimeout(()=>{
  1833.               if(!deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0 && comments.hasAttribute('hidden')){
  1834.  
  1835.                 scheduledCommentRefresh=false; // logic tbc
  1836.                 resetCommentSection();
  1837.                 
  1838.               }
  1839.             },142);
  1840.             
  1841.             Q.mutationTarget=null;
  1842.             FP.mtf_attrComments(); // in case for popstate
  1843.           }
  1844.  
  1845.  
  1846.         } else {
  1847.  
  1848.           //console.log(9443)
  1849.           innerCommentsLoaderRet.f();
  1850.           fetchCommentsFinished();
  1851.  
  1852.           pendingOne = true;
  1853.  
  1854.         }
  1855.  
  1856.  
  1857.  
  1858.       }
  1859.  
  1860.       function observerHook(mutationsList, observer){
  1861.  
  1862.         let valid = false
  1863.         for (const mutation of mutationsList) {
  1864.  
  1865.           let target = mutation.target;
  1866.           if (!target) break;
  1867.           if (!target.id) break;
  1868.           let classList = target.classList;
  1869.  
  1870.  
  1871.           if (
  1872.             classList.contains('ytd-item-section-renderer') ||
  1873.             classList.contains('ytd-comments-header-renderer') ||
  1874.             classList.contains('ytd-message-renderer')) {
  1875.             valid = true
  1876.             break;
  1877.           }
  1878.  
  1879.           break; // only outest mutation
  1880.  
  1881.  
  1882.         }
  1883.         if (valid) ulfx();
  1884.       }
  1885.  
  1886.       
  1887.       if(sections.hasAttribute('tabview-comment-section-checked')){
  1888.  
  1889.         //console.log(3612)
  1890.         ulfx();
  1891.         
  1892.  
  1893.       }else{
  1894.  
  1895.         pendingOne = false;
  1896.         //console.log(3611)
  1897.         const observer = new MutationObserver(observerHook)
  1898.         sections.setAttribute('tabview-comment-section-checked','')
  1899.         const config = { childList: true, subtree: true }; 
  1900.         observer.observe(sections, config);
  1901.         ulfx();
  1902.  
  1903.  
  1904.       }
  1905.  
  1906.  
  1907.  
  1908.     }
  1909.     //console.log(3241, location.href)
  1910.     
  1911.     let cid_render_section = timeline.setInterval(function() {
  1912.  
  1913.      // console.log(3244, location.href)
  1914.  
  1915.  
  1916.       const rootElement = comments.parentNode
  1917.  
  1918.       let sections = rootElement.querySelector('ytd-comments#comments > ytd-item-section-renderer#sections');
  1919.  
  1920.  
  1921.       if (sections) {
  1922.  
  1923.         timeline.clearInterval(cid_render_section);
  1924.         foundSection(sections);
  1925.  
  1926.       }
  1927.  
  1928.     }, 30)
  1929.  
  1930.  
  1931.  
  1932.   }
  1933.  
  1934.  
  1935.   let mtc_store=0;
  1936.   let mtc_cid = 0;
  1937.   const cssOnceFunc = {
  1938.     [`ytd-comments#comments:not([o3r-${sa_comments}])`]:(comments)=>{
  1939.       
  1940.       // once per {ytd-comments#comments} detection
  1941.  
  1942.       let ytdFlexyElm = kRef(ytdFlexy);
  1943.       if (!scriptEnable || !ytdFlexyElm) return;
  1944.  
  1945.       if (!comments) return;
  1946.  
  1947.  
  1948.  
  1949.  
  1950.       if(mtoVisibility_Comments.bindElement(comments)){
  1951.         mtoVisibility_Comments.observer.check(9);
  1952.       }
  1953.       
  1954.       pageInit_attrComments = true
  1955.       hookSection();
  1956.  
  1957.       //let dComments = comments
  1958.       //timeline.setTimeout(() => nativeFunc(dComments, "loadComments"), 20)
  1959.       //comments = null;
  1960.  
  1961.     },
  1962.     [`ytd-playlist-panel-renderer#playlist:not([o3r-${sa_playlist}])`]:(playlist)=>{
  1963.  
  1964.         // once per {ytd-playlist-panel-renderer#playlist} detection
  1965.  
  1966.         let ytdFlexyElm = kRef(ytdFlexy);
  1967.         if (!scriptEnable || !ytdFlexyElm) return;
  1968.  
  1969.         if (!playlist) return;
  1970.  
  1971.         if(mtoVisibility_Playlist.bindElement(playlist)){
  1972.           mtoVisibility_Playlist.observer.check(9)  //delay check required for browser bug - hidden changed not triggered 
  1973.         }
  1974.         playlist = null;
  1975.  
  1976.         return;
  1977.  
  1978.     },
  1979.     '#meta-contents ytd-expander:not([tabview-info-expander])':(expander)=>{
  1980.  
  1981.         // once per $$native-info-description$$ {#meta-contents ytd-expander} detection
  1982.  
  1983.         let ytdFlexyElm = kRef(ytdFlexy);
  1984.         if (!scriptEnable || !ytdFlexyElm) return ;
  1985.  
  1986.         if (!expander) return ;
  1987.         expander.setAttribute('tabview-info-expander','')
  1988.         $(expander).appendTo("#tab-info").attr('data-dom-changed-by-tabview-youtube', scriptVersionForExternal)
  1989.   
  1990.   
  1991.  
  1992.     },
  1993.   }
  1994.   const cssOnce = Object.keys(cssOnceFunc).join(', ')
  1995.  
  1996.   const regularCheck = (addP, removeP, mutationTarget)=>{
  1997.  
  1998.  
  1999.     let isInvalidAdding = mutationTarget && !mutationTarget.parentNode
  2000.  
  2001.       
  2002.     let promisesForAddition = !scriptEnable ? [] : addP > 0 && !isInvalidAdding ? [
  2003.  
  2004.         (async () => {
  2005.  
  2006.           
  2007.           //$callOnce('mtf_checkFlexy');
  2008.  
  2009.           const rootElement = Q.mutationTarget || kRef(ytdFlexy);
  2010.  
  2011.           if(rootElement){
  2012.  
  2013.             let fElms = rootElement.querySelectorAll(cssOnce)
  2014.             if(fElms.length>0){
  2015.  
  2016.               for(const fElm of fElms){
  2017.                 for(let cssSelctor in cssOnceFunc){
  2018.                   if(fElm.matches(cssSelctor)){
  2019.                     let f= cssOnceFunc[cssSelctor]
  2020.                     if(typeof f=='function') f(fElm);
  2021.                     break;
  2022.                   }
  2023.  
  2024.                 }
  2025.               }
  2026.  
  2027.               //$callOnce('mtf_initalAttr_comments');
  2028.               //$callOnce('mtf_initalAttr_playlist');
  2029.               // $callOnce('mtf_checkDescriptionLoaded');
  2030.             }
  2031.  
  2032.           }
  2033.  
  2034.         })(),
  2035.     
  2036.         (async () => {
  2037.  
  2038.  
  2039.           FP.mtf_initalAttr_chatroom();
  2040.           FP.mtf_initalAttr_engagement_panel();
  2041.           
  2042.           //$callOnce('mtf_initalAttr_chatroom');
  2043.          // $callOnce('mtf_initalAttr_engagement_panel');
  2044.  
  2045.           mtf_forceCheckLiveVideo();
  2046.             mtf_append_comments();
  2047.             mtf_liveChatBtnF();
  2048.             fixTabs();
  2049.             mtf_AfterFixTabs();
  2050.             mtf_append_playlist();
  2051.  
  2052.         })()
  2053.  
  2054.     ] : [];
  2055.     
  2056.   
  2057.     
  2058.     let promisesForEveryMutation = !scriptEnable ? [] : [
  2059.         (async () => {
  2060.             mtf_fix_details();
  2061.             mtf_ChatExist();
  2062.         })()
  2063.     ];
  2064.  
  2065.     return [...promisesForAddition, ...promisesForEveryMutation]
  2066.  
  2067.  
  2068.   }
  2069.  
  2070.   function setOnlyOneEPanel(ePanel){
  2071.  
  2072.     layoutStatusMutex.lockWith(unlock => {
  2073.  
  2074.       let cPanels = engagement_panels_();
  2075.       for (const entry of cPanels.list) {
  2076.         if (entry.ePanel != ePanel && entry.visible) ytBtnCloseEngagementPanel(entry.ePanel);
  2077.       }
  2078.       setTimeout(unlock, 30)
  2079.  
  2080.     })
  2081.  
  2082.   }
  2083.  
  2084.   const FP = {
  2085.  
  2086.     mtoNav_delayedF: () => {
  2087.  
  2088.       let { addP, removeP, mutationTarget } = Q;
  2089.  
  2090.       Q.addP = 0;
  2091.       Q.removeP = 0;
  2092.       
  2093.       mtc_store=Date.now()+1870
  2094.  
  2095.  
  2096.       let regularChecks = regularCheck(addP, removeP, mutationTarget);
  2097.  
  2098.       Promise.all(regularChecks).then(() => {
  2099.         regularChecks = null;
  2100.         
  2101.         mtc_store= Date.now() + 3870 // pending Comments start to load
  2102.         
  2103.         Q.mutationTarget = null;
  2104.  
  2105.         Q.mtoNav_requestNo--;
  2106.         //console.log('motnav reduced to', mtoNav_requestNo)
  2107.         if (Q.mtoNav_requestNo > 0) {
  2108.           Q.mtoNav_requestNo = 1;
  2109.           setTimeout(FP.mtoNav_delayedF, mtoInterval);
  2110.         }
  2111.       })
  2112.  
  2113.  
  2114.     },
  2115.  
  2116.     mtoNavF: (mutations, observer) => {
  2117.       //subtree DOM mutation checker - {ytd-watch-flexy} \single \subtree
  2118.  
  2119.       newVideoPageCheck()
  2120.  
  2121.       if (!scriptEnable) return;
  2122.       if (deferredVarYTDHidden) return;
  2123.  
  2124.       let ch = false;
  2125.  
  2126.       let reg = [];
  2127.       let dTarget = null;
  2128.  
  2129.       let wAddP = 0,
  2130.         wRemoveP = 0;
  2131.  
  2132.       let _last_mto_target = null;
  2133.       let _last_mto_target_valid = null;
  2134.  
  2135.       for (const mutation of mutations) {
  2136.         if (!mutation || !mutation.target || !mutation.target.parentNode) continue;
  2137.  
  2138.         let elementalMutation = false;
  2139.         let tAddP = 0,
  2140.           tRemoveP = 0;
  2141.  
  2142.         for (const addedNode of mutation.addedNodes) { //theoretically faster: only reading of states
  2143.           if (addedNode.nodeType === 1) {
  2144.             tAddP++;
  2145.             elementalMutation = true;
  2146.           }
  2147.         }
  2148.  
  2149.         for (const removedNode of mutation.removedNodes) { //theoretically faster: only reading of states
  2150.           if (removedNode.nodeType === 1) {
  2151.             tRemoveP++;
  2152.             elementalMutation = true;
  2153.           }
  2154.         }
  2155.  
  2156.         if (elementalMutation) { //skip all addition and removal operations without elemental changes (e.g. textNode modification)
  2157.  
  2158.           if (_last_mto_target === mutation.target) {
  2159.             // due to addition and removal operations to the same DOM
  2160.             if (_last_mto_target_valid) {
  2161.               // AddP & RemoveP is still valid
  2162.               wAddP += tAddP;
  2163.               wRemoveP += tRemoveP;
  2164.             }
  2165.             continue;
  2166.           }
  2167.           _last_mto_target = mutation.target;
  2168.  
  2169.           if (isMtoTargetSkip(mutation)) {
  2170.             _last_mto_target_valid = false;
  2171.             continue; //theoretically slower: creation of string variables
  2172.           } else {
  2173.             _last_mto_target_valid = true;
  2174.             wAddP += tAddP;
  2175.             wRemoveP += tRemoveP;
  2176.           }
  2177.  
  2178.  
  2179.  
  2180.           ch = true;
  2181.  
  2182.           reg.push(mutation);
  2183.  
  2184.           if (dTarget === null) dTarget = mutation.target; //first
  2185.           else if (dTarget === true) {} //ytdFlexy
  2186.           else if (dTarget.contains(mutation.target)) {} //first node is the container to all subsequential targets
  2187.           else { dTarget = true; } //the target is not the child of first node
  2188.  
  2189.         }
  2190.  
  2191.       }
  2192.  
  2193.       if (!ch) return; // dTarget must be true OR HTMLElement
  2194.  
  2195.       if (dTarget === true) dTarget = kRef(ytdFlexy); // major mutation occurance
  2196.       else if (dTarget === kRef(comments_section_loaded_elm) && wAddP > wRemoveP) return true; // ignore if comments are loaded (adding comments)
  2197.       else if (isMtoOverallSkip(dTarget)) return; // allow for multiple mutations at the same time - determinated after looping
  2198.  
  2199.  
  2200.  
  2201.       // 4 ~ 16 times per full page loading
  2202.  
  2203.       Q.addP += wAddP;
  2204.       Q.removeP += wRemoveP;
  2205.  
  2206.       if (Q.mutationTarget === null) Q.mutationTarget = dTarget;
  2207.       else if (Q.mutationTarget != dTarget) Q.mutationTarget = kRef(ytdFlexy);
  2208.  
  2209.       //console.log(prettyElm(dTarget), wAddP , wRemoveP, mtoInterval)
  2210.       //console.log(prettyElm(dTarget), reg.map(m=>prettyElm(m.target)))
  2211.       //console.log(7015, performance.now())
  2212.  
  2213.  
  2214.  
  2215.       Q.mtoNav_requestNo++;
  2216.       if (Q.mtoNav_requestNo == 1) setTimeout(FP.mtoNav_delayedF, mtoInterval);
  2217.  
  2218.     },
  2219.  
  2220.  
  2221.     mtoBodyF: function(mutations, observer) {
  2222.       //subtree DOM mutation checker - {body} \single \subtree
  2223.  
  2224.       if (!scriptEnable) return;
  2225.       if (deferredVarYTDHidden) return;
  2226.  
  2227.       for (const mutation of mutations) {
  2228.         for (const addedNode of mutation.addedNodes)
  2229.           if (addedNode.nodeType === 1) {
  2230.             if (addedNode.nodeName == "DIV" && addedNode.matches('.autocomplete-suggestion:not([autocomplete-disable-updatesc])') ) {
  2231.               mtf_fixAutoCompletePosition(addedNode)
  2232.             }else if(addedNode.nodeName == "DIV" && (addedNode.id==='lyricscontainer' || addedNode.id==='showlyricsbutton')){
  2233.  
  2234.               goYoutubeGeniusLyrics();
  2235.  
  2236.             }
  2237.           }
  2238.       }
  2239.  
  2240.     },
  2241.  
  2242.     mtf_attrPlaylist: (attrName, newValue) => {
  2243.       //attr mutation checker - {ytd-playlist-panel-renderer#playlist} \single
  2244.       //::attr ~ hidden    
  2245.       //console.log(1210)
  2246.  
  2247.       if (!scriptEnable) return;
  2248.       if (deferredVarYTDHidden) return;
  2249.       let cssElm = kRef(ytdFlexy);
  2250.       if (!cssElm) return;
  2251.  
  2252.       let playlist = document.querySelector('ytd-playlist-panel-renderer#playlist')
  2253.       const tabBtn = document.querySelector('[userscript-tab-content="#tab-list"]');
  2254.       let isPlaylistHidden = playlist.hasAttribute('hidden')
  2255.       //console.log(1212.2, isPlaylistHidden, playlist.getAttribute('hidden'))
  2256.       if (tabBtn) {
  2257.         //console.log('attr playlist changed')
  2258.         if (tabBtn.classList.contains('tab-btn-hidden') && !isPlaylistHidden) {
  2259.           //console.log('attr playlist changed - no hide')
  2260.           tabBtn.classList.remove("tab-btn-hidden");
  2261.         } else if (!tabBtn.classList.contains('tab-btn-hidden') && isPlaylistHidden) {
  2262.           //console.log('attr playlist changed - add hide')
  2263.           hideTabBtn(tabBtn);
  2264.         }
  2265.       }
  2266.       /* visible layout for triggering hidden removal */
  2267.       akAttr(cssElm, 'tabview-youtube-playlist', isPlaylistHidden);
  2268.     },
  2269.     mtf_attrComments: (attrName, newValue) => {
  2270.       //attr mutation checker - {ytd-comments#comments} \single
  2271.       //::attr ~ hidden
  2272.  
  2273.       let ytdFlexyElm = kRef(ytdFlexy);
  2274.       if (!scriptEnable || !ytdFlexyElm) return;
  2275.       if (deferredVarYTDHidden) return;
  2276.  
  2277.       let comments = document.querySelector('ytd-comments#comments')
  2278.       const tabBtn = document.querySelector('[userscript-tab-content="#tab-comments"]');
  2279.       if (!comments || !tabBtn) return;
  2280.       let isCommentHidden = comments.hasAttribute('hidden')
  2281.       //console.log('attr comments changed')
  2282.  
  2283.       mtoInterval = mtoInterval1;
  2284.       
  2285.       mtc_store=Date.now()+2870
  2286.  
  2287.       if( mtf_forceCheckLiveVideo_disable === 2 ){
  2288.  
  2289.       }else if (!isCommentHidden) {
  2290.         
  2291.  
  2292.         akAttr(ytdFlexyElm, 'tabview-youtube-comments', false, 'K');
  2293.  
  2294.  
  2295.  
  2296.         //console.log('attr comments changed - no hide')
  2297.         tabBtn.classList.remove("tab-btn-hidden") //if contains
  2298.  
  2299.             
  2300.         
  2301.         //console.log(703)
  2302.  
  2303.         mtc_cid&&timeline.clearInterval(mtc_cid);
  2304.  
  2305.       } else if (isCommentHidden) {
  2306.  
  2307.         akAttr(ytdFlexyElm, 'tabview-youtube-comments', true, 'K'); 
  2308.         
  2309.         timeline.setTimeout(function(){
  2310.           if(!deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0 && comments.hasAttribute('hidden')){
  2311.             //console.log(3434)
  2312.             scheduledCommentRefresh=false;  //logic tbc
  2313.             resetCommentSection();
  2314.             //console.log(8022)
  2315.           }
  2316.         },142)
  2317.  
  2318.  
  2319.         if(!mtc_cid) mtc_cid=timeline.setInterval(()=>{
  2320.           if(mtc_store>Date.now()) return;
  2321.             timeline.clearInterval(mtc_cid)
  2322.             mtc_cid=0;
  2323.             if(mtf_forceCheckLiveVideo_disable===2)return;
  2324.             if(isNullComments()) _disableComments();
  2325.  
  2326.         },80)
  2327.  
  2328.       }
  2329.  
  2330.  
  2331.     },
  2332.  
  2333.  
  2334.     mtf_attrChatroom: (attrName, newValue) => {
  2335.       //attr mutation checker - {ytd-live-chat-frame#chat} \single
  2336.       //::attr ~ collapsed
  2337.  
  2338.       let ytdFlexyElm = kRef(ytdFlexy);
  2339.       if (!scriptEnable || !ytdFlexyElm) return;
  2340.       if (deferredVarYTDHidden) return;
  2341.  
  2342.       layoutStatusMutex.lockWith(unlock => {
  2343.  
  2344.         const chatBlock = document.querySelector('ytd-live-chat-frame#chat')
  2345.         const cssElm = kRef(ytdFlexy)
  2346.  
  2347.         if (!chatBlock || !cssElm) {
  2348.           unlock();
  2349.           return;
  2350.         }
  2351.  
  2352.         if (deferredVarYTDHidden) {
  2353.           unlock();
  2354.           return;
  2355.         }
  2356.  
  2357.         if (!cssElm.hasAttribute('userscript-chatblock')) wAttr(cssElm, 'userscript-chatblock', true);
  2358.         let isCollapsed = !!chatBlock.hasAttribute('collapsed');
  2359.         wAttr(cssElm, 'userscript-chat-collapsed', isCollapsed);
  2360.  
  2361.         if (cssElm.hasAttribute('userscript-chatblock') && !isCollapsed) lastShowTab = '#chatroom';
  2362.  
  2363.         if (!isCollapsed && document.querySelector('#right-tabs .tab-btn.active') && isWideScreenWithTwoColumns() && !isTheater()) {
  2364.           switchTabActivity(null);
  2365.           timeline.setTimeout(unlock, 40);
  2366.         } else {
  2367.           unlock();
  2368.         }
  2369.  
  2370.         if (!isCollapsed) {
  2371.           runAfterExpandChat();
  2372.         } else {
  2373.           chatBlock.removeAttribute('yt-userscript-iframe-loaded');
  2374.         }
  2375.  
  2376.       })
  2377.  
  2378.  
  2379.  
  2380.  
  2381.     },
  2382.  
  2383.     mtf_attrEngagementPanel: (mutations, observer) => {
  2384.       //attr mutation checker - {ytd-engagement-panel-section-list-renderer} \mutiple
  2385.       //::attr ~ visibility
  2386.  
  2387.       let ytdFlexyElm = kRef(ytdFlexy);
  2388.       if (!scriptEnable || !ytdFlexyElm) return;
  2389.  
  2390.       //multiple instance
  2391.       if (mutations) {
  2392.         for (const mutation of mutations) {
  2393.           let ePanel = mutation.target;
  2394.           if (ePanel.getAttribute('visibility') == 'ENGAGEMENT_PANEL_VISIBILITY_EXPANDED') {
  2395.             setOnlyOneEPanel(ePanel);
  2396.             break;
  2397.           }
  2398.         }
  2399.       }
  2400.       if (deferredVarYTDHidden) return;
  2401.  
  2402.       layoutStatusMutex.lockWith(unlock => {
  2403.  
  2404.         const ePanel = document.querySelector('ytd-watch-flexy ytd-engagement-panel-section-list-renderer')
  2405.         const cssElm = kRef(ytdFlexy)
  2406.  
  2407.         if (!ePanel || !cssElm) {
  2408.           unlock();
  2409.           return;
  2410.         }
  2411.         let previousValue = +cssElm.getAttribute('userscript-engagement-panel') || 0;
  2412.  
  2413.         let { shownRes, value, count } = engagement_panels_();
  2414.         let nextValue = value;
  2415.         let nextCount = count;
  2416.  
  2417.  
  2418.         if (nextCount == 0 && cssElm.hasAttribute('userscript-engagement-panel')) {
  2419.           storeLastPanel=null;
  2420.           wAttr(cssElm, 'userscript-engagement-panel', false);
  2421.           unlock();
  2422.         } else {
  2423.  
  2424.           if ((nextCount > 1) || (cssElm.hasAttribute('userscript-engagement-panel') && previousValue === nextValue)) {
  2425.             unlock();
  2426.             return;
  2427.           }
  2428.  
  2429.           cssElm.setAttribute('userscript-engagement-panel', nextValue);
  2430.  
  2431.           let b = false;
  2432.           if (previousValue != nextValue && nextValue > 0) {
  2433.             lastShowTab = `#engagement-panel-${nextValue}`;
  2434.             b = true;
  2435.             storeLastPanel = mWeakRef( shownRes[0])
  2436.             //console.log(9999, shownRes[0])
  2437.           }
  2438.  
  2439.           if (b && document.querySelector('#right-tabs .tab-btn.active') && isWideScreenWithTwoColumns() && !isTheater()) {
  2440.             switchTabActivity(null);
  2441.             timeline.setTimeout(unlock, 40);
  2442.           } else {
  2443.             unlock();
  2444.           }
  2445.         }
  2446.  
  2447.       })
  2448.  
  2449.  
  2450.  
  2451.  
  2452.     },
  2453.  
  2454.     mtf_initalAttr_playlist: () => {
  2455.       
  2456.     },
  2457.  
  2458.     mtf_initalAttr_comments: () => {
  2459.       
  2460.     },
  2461.  
  2462.     mtf_initalAttr_chatroom: () => {
  2463.       // every per [new] {ytd-live-chat-frame#chat} detection - reset after mini-playview
  2464.       
  2465.       let ytdFlexyElm = kRef(ytdFlexy);
  2466.       if (!scriptEnable || !ytdFlexyElm) return true;
  2467.  
  2468.       const rootElement = Q.mutationTarget || ytdFlexyElm;
  2469.  
  2470.  
  2471.       if (!mgChatFrame.inPage()) {
  2472.  
  2473.         mtoVisibility_Chatroom.clear(true);
  2474.  
  2475.         let chatroom = rootElement.querySelector(`ytd-live-chat-frame#chat:not([${sa_chatroom}]`)
  2476.         if (chatroom) {
  2477.           mgChatFrame.setVar(chatroom);
  2478.  
  2479.           if(mtoVisibility_Chatroom.bindElement(chatroom)){
  2480.             mtoVisibility_Chatroom.observer.check(9)
  2481.           }
  2482.  
  2483.           chatroom = null
  2484.         }
  2485.       }
  2486.       return true;
  2487.  
  2488.     },
  2489.  
  2490.     mtf_initalAttr_engagement_panel: () => {
  2491.       // every per $$non-checked-section-list$$ {ytd-watch-flexy ytd-engagement-panel-section-list-renderer:not([o3r-XXXXX])} detection
  2492.       
  2493.       let ytdFlexyElm = kRef(ytdFlexy);
  2494.       if (!scriptEnable || !ytdFlexyElm) return true;
  2495.  
  2496.       const rootElement = Q.mutationTarget || ytdFlexyElm;
  2497.  
  2498.       let toCheck = false;
  2499.       for (const engagement_panel of rootElement.querySelectorAll(
  2500.         `ytd-watch-flexy ytd-engagement-panel-section-list-renderer:not([o3r-${sa_epanel}])`
  2501.         )) {
  2502.  
  2503.  
  2504.  
  2505.         let bindRes = mtoVisibility_EngagementPanel.bindElement(engagement_panel, {
  2506.           attributes: true,
  2507.           attributeFilter: ['visibility'],
  2508.           attributeOldValue: true
  2509.         })
  2510.         
  2511.  
  2512.         if(bindRes) toCheck = true;
  2513.       }
  2514.  
  2515.       if (toCheck) FP.mtf_attrEngagementPanel()
  2516.  
  2517.       return true;
  2518.     },
  2519.  
  2520.  
  2521.  
  2522.     //live-chat / chat-replay
  2523.  
  2524.     fireOnce_forceCheckLiveVideo_tf: () => {
  2525.       // once per $$player-playback-timestamp$$ {#ytd-player .ytp-time-display} &&  $$chat-frame$$ {ytd-live-chat-frame#chat} detection
  2526.  
  2527.       let ytdFlexyElm = kRef(ytdFlexy);
  2528.       if (!scriptEnable || !ytdFlexyElm) return;
  2529.  
  2530.       let elm = document.querySelector('#ytd-player .ytp-time-display');
  2531.       if (elm && elm.classList.contains('ytp-live')) {
  2532.         //console.log(7006)
  2533.         ytdFlexyElm.setAttribute('userscript-chatblock', 'chat-live')
  2534.         //console.log(2441)
  2535.         mtf_forceCheckLiveVideo_disable = 2;
  2536.         
  2537.         _disableComments();
  2538.         
  2539.        //console.log(701)
  2540.         //disableComments_LiveChat();
  2541.       }
  2542.     },
  2543.  
  2544.     
  2545.  
  2546.     //comments
  2547. /*
  2548.     mtf_advancedComments: () => {
  2549.       // once per {ytd-comments#comments #continuations} detection
  2550.  
  2551.       //let ytdFlexyElm = kRef(ytdFlexy);
  2552.       //if (!scriptEnable || !ytdFlexyElm) return true;
  2553.  
  2554.       //const rootElement = Q.mutationTarget || ytdFlexyElm;
  2555.       //const continuations = document.querySelector("ytd-comments#comments #continuations");
  2556.       //if (!continuations) return true;
  2557.       //requestingComments = document.querySelector('ytd-comments#comments');
  2558.       //scrollForComments();
  2559.       return false;
  2560.     }
  2561.     */
  2562.  
  2563.  
  2564.   }
  2565.  
  2566.  
  2567.  
  2568.  
  2569.  
  2570.   let displayedPlaylist = null;
  2571.   let scrollingVideosList = null;
  2572.  
  2573.   let scriptEnable = false;
  2574.   let scriptEC = 0;
  2575.   let lastShowTab = null;
  2576.  
  2577.   let _cachedLastVideo = null;
  2578.   let videoListBeforeSearch = null;
  2579.   let no_fix_contents_until = 0;
  2580.   let no_fix_playlist_until = 0;
  2581.   let statusCollasped = 0;
  2582.  
  2583.   let ytdFlexy = null;
  2584.  
  2585.   function pluginUnhook() {
  2586.     _pluginUnhook()
  2587.  
  2588.     resetCommentSection();
  2589.  
  2590.   }
  2591.  
  2592.   function _pluginUnhook() {
  2593.  
  2594.     sect_lastUpdate = 0;
  2595.     sect_holder = null;
  2596.     sect_hTime = 0;
  2597.  
  2598.     //console.log(8001)
  2599.  
  2600.     videoListBeforeSearch = null;
  2601.     statusCollasped = 0;
  2602.     _cachedLastVideo = null;
  2603.     lastShowTab = null;
  2604.     displayedPlaylist = null;
  2605.     scrollingVideosList = null;
  2606.     scriptEnable = false;
  2607.     scriptEC++;
  2608.     if (scriptEC > 788888888) scriptEC = 188888888;
  2609.     ytdFlexy = null;
  2610.     wls.layoutStatus = null;
  2611.  
  2612.     //console.log('unc01')
  2613.  
  2614.     mtoVisibility_EngagementPanel.clear(true)
  2615.     mtoVisibility_Playlist.clear(true)
  2616.     mtoVisibility_Comments.clear(true)
  2617.  
  2618.     mgChatFrame.kVar = null;
  2619.     mtoVisibility_Chatroom.clear(true)
  2620.     mtoFlexyAttr.clear(true)
  2621.  
  2622.     
  2623.  
  2624.     for (const elem of document.querySelectorAll(
  2625.       ['ytd-expander[tabview-info-expander]'].join(', ')
  2626.       )) {
  2627.         elem.removeAttribute('tabview-info-expander');
  2628.     }
  2629.  
  2630.     
  2631.     mtoMutation_body.clear(true)
  2632.     mtoMutation_watchFlexy.clear(true)
  2633.     //FOnce.mtf_checkFlexy = null;
  2634.     //FOnce.mtf_initalAttr_comments = null;
  2635.     //FOnce.mtf_initalAttr_playlist = null;
  2636.     //FOnce.mtf_initalAttr_chatroom = null;
  2637.     //FOnce.mtf_initalAttr_engagement_panel = null;
  2638.     //FOnce.mtf_advancedComments = null;
  2639.     //FOnce.mtf_checkDescriptionLoaded = null;
  2640.     //FOnce.mtf_forceCheckLiveVideo = null;
  2641.     Q.mtf_chatBlockQ = null;
  2642.  
  2643.  
  2644.     mtoInterval = mtoInterval1;
  2645.  
  2646.   }
  2647.  
  2648.   let comments_section_loaded_elm = null;
  2649.  
  2650.  
  2651.  
  2652.   function getTabsHTML() {
  2653.  
  2654.     const sTabBtnVideos = `${svgElm(16,16,298,298,svgVideos)}<span>Videos</span>`
  2655.     const sTabBtnInfo = `${svgElm(16,16,23.625,23.625,svgInfo)}<span>Info</span>`
  2656.     const sTabBtnPlayList = `${svgElm(16,16,426.667,426.667,svgPlayList)}<span>Playlist</span>`
  2657.  
  2658.     let str1 = `
  2659.         <paper-ripple class="style-scope yt-icon-button">
  2660.             <div id="background" class="style-scope paper-ripple" style="opacity:0;"></div>
  2661.             <div id="waves" class="style-scope paper-ripple"></div>
  2662.         </paper-ripple>
  2663.         `;
  2664.  
  2665.     const str_tabs = [
  2666.             `<a id="tab-btn1" data-name="info" userscript-tab-content="#tab-info" class="tab-btn">${sTabBtnInfo}${str1}</a>`,
  2667.             `<a id="tab-btn3" userscript-tab-content="#tab-comments" data-name="comments" class="tab-btn">${svgElm(16,16,60,60,svgComments)}<span id="tab3-txt-loader"></span>${str1}</a>`,
  2668.             `<a id="tab-btn4" userscript-tab-content="#tab-videos" data-name="videos" class="tab-btn">${sTabBtnVideos}${str1}</a>`,
  2669.             `<a id="tab-btn5" userscript-tab-content="#tab-list" class="tab-btn">${sTabBtnPlayList}${str1}</a>`
  2670.         ].join('')
  2671.  
  2672.     let addHTML = `
  2673.         <div id="right-tabs">
  2674.             <header>
  2675.                 <div id="material-tabs">
  2676.                     ${str_tabs}
  2677.                 </div>
  2678.             </header>
  2679.             <div class="tab-content">
  2680.                 <div id="tab-info" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2681.                 <div id="tab-comments" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2682.                 <div id="tab-videos" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2683.                 <div id="tab-list" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2684.             </div>
  2685.         </div>
  2686.         `;
  2687.  
  2688.     return addHTML
  2689.  
  2690.   }
  2691.  
  2692.  
  2693.   function onVideoChange() {
  2694.     // for popstate & next video
  2695.  
  2696.     newVideoPageCheck();
  2697.  
  2698.     scheduledCommentRefresh=true;
  2699.     let comments = document.querySelector('ytd-comments#comments')
  2700.     
  2701.     if(!deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0 && comments.hasAttribute('hidden')){
  2702.  
  2703.       scheduledCommentRefresh=false; 
  2704.       
  2705.       // comment tab btn - hide by timer in attribute change
  2706.       resetCommentSection();
  2707.     }
  2708.  
  2709.     mtf_forceCheckLiveVideo_disable = 0
  2710.     mtc_store= Date.now()+3870
  2711.  
  2712.     if (deferredVarYTDHidden) {  // reset info when hidden
  2713.       
  2714.       resetCommentSection();
  2715.     }else{
  2716.       checkVisibleEngagementPanel();
  2717.       atChange(); // in case no mutation occurance
  2718.     }
  2719.  
  2720.  
  2721.  
  2722.   }
  2723.  
  2724.   function onNavigationEnd(evt) {
  2725.     
  2726.     newVideoPageCheck(); // required for init
  2727.  
  2728.     let mRet =
  2729.       (/^https?\:\/\/(\w+\.)*youtube\.com\/watch\?(\w+\=[^\/\?\&]+\&|\w+\=?\&)*v=[\w\-\_]+/.test(window.location.href) ? 1 : 0) +
  2730.       (document.querySelector('ytd-watch-flexy[tabview-selection]') ? 2 : 0);
  2731.  
  2732.     if (mRet === 1) {
  2733.  
  2734.       document.addEventListener('loadedmetadata', function(evt) {
  2735.         if (evt.target.matches('video[tabview-mainvideo]')) {
  2736.           setTimeout(onVideoChange, 30)
  2737.         }
  2738.       }, true)
  2739.  
  2740.       pluginUnhook(); // in case not triggered by popstate - say mini playing
  2741.  
  2742.       let timeout = 4; // max. 4 animation frames
  2743.  
  2744.       let tf = () => {
  2745.  
  2746.         if (--timeout > 0 && !document.querySelector('#player video')) return requestAnimationFrame(tf);
  2747.  
  2748.         if (!document.querySelector('script#userscript-tabview-injection-1')) {
  2749.  
  2750.           if (isMyScriptInChromeRuntime()){
  2751.  
  2752.             addScriptByURL(window.chrome.runtime.getURL('js/injection_script_1.js')).id = 'userscript-tabview-injection-1';
  2753.           }
  2754.           else{
  2755.  
  2756.             let injection_script = GM_getResourceText("injectionJS1")
  2757.             addScript(`${injection_script}`).id = 'userscript-tabview-injection-1';
  2758.           }
  2759.         }
  2760.  
  2761.         let ytdFlexyElm = document.querySelector('ytd-watch-flexy')
  2762.  
  2763.         if(!ytdFlexyElm) return;
  2764.  
  2765.  
  2766.         scriptEnable = true;
  2767.         scriptEC++;
  2768.  
  2769.         no_fix_contents_until = 0;
  2770.         no_fix_playlist_until = 0;
  2771.  
  2772.         ytdFlexy = mWeakRef(ytdFlexyElm)
  2773.  
  2774.         let timeoutR_findRelated = new Timeout();
  2775.         timeoutR_findRelated.set(function() {
  2776.           let ytdFlexyElm = kRef(ytdFlexy);
  2777.           if(!ytdFlexyElm) return true;
  2778.           let related = ytdFlexyElm.querySelector("#related");
  2779.           if (!related) return true;
  2780.           foundRelated(related);
  2781.         }, 100, 10)
  2782.  
  2783.         function foundRelated(related) {
  2784.           let promise = Promise.resolve();
  2785.           if (!document.querySelector("#right-tabs")) {
  2786.             promise = promise.then(() => {
  2787.               $(getTabsHTML()).insertBefore(related).attr('data-dom-created-by-tabview-youtube', scriptVersionForExternal);
  2788.             })
  2789.           }
  2790.           promise.then(runAfterTabAppended)
  2791.         }
  2792.  
  2793.         /*
  2794.         setTimeout(() => {
  2795.           for (const s of document.querySelectorAll('#right-tabs [userscript-scrollbar-render]')) {
  2796.             Promise.resolve(s).then(s => {
  2797.               if (s && s.scrollTop > 0) s.scrollTop = 0;
  2798.               let child = s.firstElementChild;
  2799.               if (child && child.scrollTop > 0) child.scrollTop = 0;
  2800.             });
  2801.           }
  2802.         }, 90)
  2803.         */
  2804.  
  2805.  
  2806.       }
  2807.  
  2808.       tf();
  2809.  
  2810.     } else if (mRet === 3) {
  2811.  
  2812.       if(!scriptEnable) return;
  2813.  
  2814.       let elmComments = document.querySelector('ytd-comments#comments')
  2815.  
  2816.       if (elmComments) {
  2817.         nativeFunc(elmComments, "loadComments")
  2818.       }
  2819.  
  2820.     } else if (mRet === 0) {
  2821.       
  2822.  
  2823.       pluginUnhook(); // in case not triggered by popstate - say mini playing
  2824.  
  2825.     }
  2826.  
  2827.     if(mRet & 1){
  2828.       
  2829.       setTimeout(()=>{
  2830.         
  2831.         Q.mutationTarget=null;
  2832.         atChange(); // in case no mutation occurance
  2833.         FP.mtf_attrComments()
  2834.       },160);
  2835.         
  2836.     }
  2837.  
  2838.   }
  2839.  
  2840.  
  2841.   function setToActiveTab(defaultTab) {
  2842.     if (isTheater() && isWideScreenWithTwoColumns()) return;
  2843.     const jElm = document.querySelector(`a[userscript-tab-content="${switchTabActivity_lastTab}"]:not(.tab-btn-hidden)`) ||
  2844.       document.querySelector(`a[userscript-tab-content="${(defaultTab||settings.defaultTab)}"]:not(.tab-btn-hidden)`) ||
  2845.       document.querySelector("a[userscript-tab-content]:not(.tab-btn-hidden)") ||
  2846.       null;
  2847.     switchTabActivity(jElm);
  2848.     return !!jElm;
  2849.   }
  2850.  
  2851.   function getWrapper(wrapperId) {
  2852.     let $wrapper = $(`#${wrapperId}`);
  2853.     if (!$wrapper[0]) $wrapper = $(`<div id="${wrapperId}"></div>`)
  2854.     return $wrapper.first();
  2855.   }
  2856.  
  2857.   function runAfterTabAppended() {
  2858.  
  2859.     document.documentElement.setAttribute('plugin-tabview-youtube', '')
  2860.  
  2861.     const ytdFlexyElm = kRef(ytdFlexy)
  2862.     if(!ytdFlexyElm) return;
  2863.     if (!ytdFlexyElm.hasAttribute('tabview-selection')) ytdFlexyElm.setAttribute('tabview-selection', '')
  2864.  
  2865.     
  2866.  
  2867.     
  2868.     //console.log('unc02')
  2869.  
  2870.     // append the next videos 
  2871.     // it exists as "related" is already here
  2872.     fixTabs();
  2873.  
  2874.     // just switch to the default tab
  2875.     setToActiveTab();
  2876.  
  2877.  
  2878.     prepareTabBtn();
  2879.  
  2880.  
  2881.     // append the detailed meta contents to the tab-info
  2882.     // ** FOnce.mtf_checkDescriptionLoaded = FP.mtf_checkDescriptionLoaded;
  2883.     // ** if (Q.mutationTarget === null) $callOnceAsync('mtf_checkDescriptionLoaded');
  2884.  
  2885.     // force window scroll when #continuations is first detected and #comments still [hidden]
  2886.     //FOnce.mtf_advancedComments = FP.mtf_advancedComments;
  2887.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_advancedComments');
  2888.  
  2889.     // use video player's element to detect the live-chat situation (no commenting section)
  2890.     // 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
  2891.     //FOnce.mtf_forceCheckLiveVideo = FP.mtf_forceCheckLiveVideo;
  2892.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_forceCheckLiveVideo');
  2893.     //mtf_forceCheckLiveVideo();
  2894.  
  2895.  
  2896.     // Attr Mutation Observer - #playlist - hidden
  2897.     //clearMutationObserver(mtoVs, 'mtoVisibility_Playlist')
  2898.     // Attr Mutation Observer callback - #playlist - hidden
  2899.  
  2900.     // pending for #playlist and set Attribute Observer
  2901.     // ** FOnce.mtf_initalAttr_playlist = FP.mtf_initalAttr_playlist
  2902.     // ** if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_playlist');
  2903.  
  2904.     // Attr Mutation Observer - ytd-comments#comments - hidden
  2905.     //clearMutationObserver(mtoVs, 'mtoVisibility_Comments')
  2906.     // Attr Mutation Observer callback - ytd-comments#comments - hidden
  2907.  
  2908.     // pending for #comments and set Attribute Observer
  2909.     // ** FOnce.mtf_initalAttr_comments = FP.mtf_initalAttr_comments;
  2910.     // ** if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_comments');
  2911.  
  2912.  
  2913.     //clearMutationObserver(mtoVs, 'mtoVisibility_Chatroom');
  2914.     //FOnce.mtf_initalAttr_chatroom = FP.mtf_initalAttr_chatroom
  2915.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_chatroom');
  2916.  
  2917.     // clearMutationObserver(mtoVs, 'mtoVisibility_EngagementPanel');
  2918.     // for (const engagement_panel of document.querySelectorAll('ytd-watch-flexy ytd-engagement-panel-section-list-renderer:not([tabview-attr-checked])')) {
  2919.     //   engagement_panel.removeAttribute('tabview-attr-checked');
  2920.     // }
  2921.     //FOnce.mtf_initalAttr_engagement_panel = FP.mtf_initalAttr_engagement_panel
  2922.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_engagement_panel');
  2923.  
  2924.  
  2925.     mtoFlexyAttr.clear(true)
  2926.     mtf_checkFlexy()
  2927.  
  2928.  
  2929.     document.querySelector("#right-tabs .tab-content").addEventListener('scroll', makeBodyScrollByEvt, true);
  2930.  
  2931.  
  2932.     Q.addP = 0;
  2933.     Q.removeP = 0;
  2934.     Q.mutationTarget = null;
  2935.  
  2936.     Q.mtoNav_requestNo = 0;
  2937.  
  2938.  
  2939.     mtoMutation_watchFlexy.bindElement(ytdFlexyElm, {
  2940.       childList: true,
  2941.       subtree: true,
  2942.       attributes: false
  2943.     })
  2944.  
  2945.     // for automcomplete plugin or other userscript plugins
  2946.     // document.body for Firefox >= 60
  2947.     mtoMutation_body.bindElement(document.querySelector('body'), {
  2948.       childList: true,
  2949.       subtree: false,
  2950.       attributes: false
  2951.     })
  2952.  
  2953.  
  2954.     regularCheck(1, 0, null);
  2955.  
  2956.     
  2957.  
  2958.  
  2959.  
  2960.   }
  2961.  
  2962.  
  2963.   function fetchCommentsFinished() {
  2964.     let ytdFlexyElm = kRef(ytdFlexy);
  2965.     if (!scriptEnable || !ytdFlexyElm) return;
  2966.     if(mtf_forceCheckLiveVideo_disable===2) return;
  2967.     akAttr(ytdFlexyElm, 'tabview-youtube-comments', false, 'LS')
  2968.   }
  2969.  
  2970.   function setCommentSection(value) {
  2971.  
  2972.     Q.comments_section_loaded = value;
  2973.  
  2974.     if (value === 0) {
  2975.       sect_lastUpdate = 0;
  2976.       comments_section_loaded_elm = null;
  2977.     }
  2978.  
  2979.   }
  2980.  
  2981.   function resetCommentSection(){
  2982.     
  2983.  
  2984.     let tab_btn = document.querySelector('.tab-btn[userscript-tab-content="#tab-comments"]')
  2985.  
  2986.  
  2987.     if(tab_btn){
  2988.  
  2989.       let span = tab_btn.querySelector('span#tab3-txt-loader');
  2990.  
  2991.       tab_btn.removeAttribute('loaded-comment')
  2992.       tab_btn.classList.remove('tab-btn-hidden')
  2993.         
  2994.       if(span){
  2995.         span.textContent='';
  2996.       }
  2997.     }
  2998.  
  2999.  
  3000.     setCommentSection(0);
  3001.  
  3002.  
  3003.   }
  3004.  
  3005.   function _disableComments() {
  3006.     
  3007.     //requestingComments = null;
  3008.     mtc_cid && timeline.clearInterval(mtc_cid)
  3009.     mtc_cid=0;
  3010.  
  3011.     if (!scriptEnable) return;
  3012.     let cssElm = kRef(ytdFlexy);
  3013.     if (!cssElm) return;
  3014.  
  3015.     mtoInterval = mtoInterval2;
  3016.  
  3017.     if(Q.comments_section_loaded>0) return; //already displayed / disabled
  3018.  
  3019.     scheduledCommentRefresh=false;
  3020.     setCommentSection(2);
  3021.  
  3022.     comments_section_loaded_elm = mWeakRef(document.querySelector('ytd-comments#comments div#contents') || null)
  3023.  
  3024.     let tabBtn = document.querySelector('.tab-btn[userscript-tab-content="#tab-comments"]');
  3025.     if(tabBtn) {
  3026.       tabBtn.removeAttribute('loaded-comment')
  3027.       if (!tabBtn.classList.contains('tab-btn-hidden')) {
  3028.         hideTabBtn(tabBtn)
  3029.       }
  3030.     }
  3031.  
  3032.     akAttr(cssElm, 'tabview-youtube-comments', true, 'D');
  3033.  
  3034.  
  3035.   }
  3036.  
  3037.  
  3038.  
  3039.  
  3040.   let layoutStatusMutex = new Mutex();
  3041.  
  3042.   function forceDisplayChatReplay() {
  3043.     let items = chatFrameElement('yt-live-chat-item-list-renderer #items');
  3044.     if (items && items.childElementCount !== 0) return;
  3045.  
  3046.     let ytd_player = document.querySelector('ytd-player#ytd-player');
  3047.     if (!ytd_player) return;
  3048.     let videoElm = ytd_player.querySelector('video');
  3049.     if (!videoElm) return;
  3050.  
  3051.     let video = videoElm;
  3052.     if (videoElm && video.currentTime > 0 && !video.ended && video.readyState > video.HAVE_CURRENT_DATA) {
  3053.       let chat = document.querySelector('ytd-live-chat-frame#chat');
  3054.       if (chat) {
  3055.         nativeFunc(chat, "postToContentWindow", [{ "yt-player-video-progress": videoElm.currentTime }])
  3056.       }
  3057.     }
  3058.  
  3059.   }
  3060.  
  3061.  
  3062.  
  3063.   function runAfterExpandChat() {
  3064.  
  3065.  
  3066.     new Promise(resolve => {
  3067.  
  3068.       let chatFrame_st = Date.now();
  3069.       let cid_chatFrameCheck = 0;
  3070.  
  3071.       let sEF = new ScriptEF();
  3072.       cid_chatFrameCheck = setInterval(() => {
  3073.         if (!sEF.isValid()) return cid_chatFrameCheck = clearInterval(cid_chatFrameCheck);
  3074.         let cDoc = chatFrameContentDocument();
  3075.         if (cDoc) {
  3076.           cid_chatFrameCheck = clearInterval(cid_chatFrameCheck);
  3077.           resolve();
  3078.         } else if (!scriptEnable || !isChatExpand() || Date.now() - chatFrame_st > 6750) {
  3079.           cid_chatFrameCheck = clearInterval(cid_chatFrameCheck);
  3080.         }
  3081.       }, 60);
  3082.  
  3083.  
  3084.     }).then(() => new Promise(resolve => {
  3085.  
  3086.       let timeoutR_ChatAppReady = new Timeout();
  3087.       timeoutR_ChatAppReady.set(() => {
  3088.  
  3089.         if (!scriptEnable || !isChatExpand()) return false;
  3090.         let app = chatFrameElement('yt-live-chat-app');
  3091.         if (!app) return true;
  3092.  
  3093.         timeline.setTimeout(() => resolve(app), 40)
  3094.  
  3095.       }, 40, 150); //40*150 = 6000ms = 6s;
  3096.  
  3097.     })).then(app => {
  3098.  
  3099.  
  3100.       let cDoc = app.ownerDocument;
  3101.  
  3102.       if (!scriptEnable || !isChatExpand()) return;
  3103.       addStyle(`      
  3104.                 body #input-panel.yt-live-chat-renderer::after {
  3105.                     background: transparent;
  3106.                 }
  3107.                 #items.yt-live-chat-item-list-renderer{
  3108.                     contain: content;
  3109.                 }
  3110.                 yt-live-chat-text-message-renderer{
  3111.                     contain: content;
  3112.                 }
  3113.                 #item-offset.yt-live-chat-item-list-renderer{
  3114.                     contain: content;
  3115.                 }
  3116.                 #item-scroller.yt-live-chat-item-list-renderer{
  3117.                     contain: strict;
  3118.                 }
  3119.                 img[width][height]{
  3120.                     contain: strict;
  3121.                 }
  3122.                 #item-list>yt-live-chat-item-list-renderer, #item-list>yt-live-chat-item-list-renderer>#contents{
  3123.                     contain: strict;
  3124.                 }
  3125.  
  3126.  
  3127.                 #chat.style-scope.yt-live-chat-renderer,
  3128.                 yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer,
  3129.                 #item-scroller,
  3130.                 yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer .style-scope.yt-live-chat-text-message-renderer,
  3131.                 yt-live-chat-ticker-paid-message-item-renderer
  3132.                 {
  3133.                   contain: layout paint style;
  3134.                 }
  3135.                  
  3136.                 yt-img-shadow#author-photo.style-scope{
  3137.                   contain: layout paint style;
  3138.                   content-visibility: auto;
  3139.                   contain-intrinsic-size: 24px 24px;
  3140.                 }
  3141.                  
  3142.                 #item-offset.style-scope.yt-live-chat-item-list-renderer,
  3143.                 #items.style-scope.yt-live-chat-item-list-renderer {
  3144.                   contain: layout paint;
  3145.                 }
  3146.                  
  3147.                 .style-scope.yt-live-chat-text-message-renderer {
  3148.                   cursor: default;
  3149.                 }
  3150.                  
  3151.                 #author-photo.style-scope.yt-live-chat-text-message-renderer,
  3152.                 yt-live-chat-author-chip.style-scope.yt-live-chat-text-message-renderer,
  3153.                 yt-live-chat-author-chip.style-scope.yt-live-chat-text-message-renderer ~ span#message.style-scope.yt-live-chat-text-message-renderer
  3154.                 {
  3155.                   pointer-events: none;
  3156.                 }
  3157.                  
  3158.                 span#message.style-scope.yt-live-chat-text-message-renderer > img.emoji.yt-formatted-string.style-scope.yt-live-chat-text-message-renderer{
  3159.                   contain: layout paint style;
  3160.                   cursor: default;
  3161.                   pointer-events: none;
  3162.                 }
  3163.                  
  3164.                 body yt-live-chat-app{
  3165.                   contain: size layout paint style;
  3166.                   content-visibility: auto;
  3167.                   transform: translate3d(0,0,0);
  3168.                   overflow: hidden;
  3169.                 }
  3170.                  
  3171.  
  3172.             `, cDoc.documentElement)
  3173.  
  3174.       if (cDoc.querySelector('yt-live-chat-renderer #continuations')) {
  3175.         timeline.setTimeout(() => mtf_ChatExist(), 40);
  3176.         $(document.querySelector('ytd-live-chat-frame#chat')).attr('yt-userscript-iframe-loaded', '')
  3177.       }
  3178.  
  3179.       forceDisplayChatReplay();
  3180.  
  3181.  
  3182.  
  3183.  
  3184.     })
  3185.  
  3186.   }
  3187.  
  3188.   function flexyAttr_toggleFlag(mFlag, b, flag) {
  3189.     if (b) mFlag = mFlag | flag;
  3190.     else mFlag = mFlag & ~flag;
  3191.     return mFlag;
  3192.   }
  3193.  
  3194.   function flexAttr_toLayoutStatus(nls, attributeName) {
  3195.  
  3196.     let attrElm, b, v;
  3197.     switch (attributeName) {
  3198.       case 'theater':
  3199.         nls = flexyAttr_toggleFlag(nls, isTheater(), LAYOUT_THEATER);
  3200.         break;
  3201.       case 'userscript-chat-collapsed':
  3202.       case 'userscript-chatblock':
  3203.         attrElm = kRef(ytdFlexy);
  3204.         if (hasAttribute(attrElm, 'userscript-chat-collapsed')) {
  3205.           nls = flexyAttr_toggleFlag(nls, true, LAYOUT_CHATROOM | LAYOUT_CHATROOM_COLLASPED);
  3206.         } else {
  3207.           nls = flexyAttr_toggleFlag(nls, hasAttribute(attrElm, 'userscript-chatblock'), LAYOUT_CHATROOM);
  3208.           nls = flexyAttr_toggleFlag(nls, false, LAYOUT_CHATROOM_COLLASPED);
  3209.         }
  3210.         break;
  3211.       case 'is-two-columns_':
  3212.         nls = flexyAttr_toggleFlag(nls, isWideScreenWithTwoColumns(), LAYOUT_TWO_COLUMNS);
  3213.         break;
  3214.  
  3215.       case 'tabview-selection':
  3216.         b = isNonEmptyString(kRef(ytdFlexy).getAttribute('tabview-selection'));
  3217.         nls = flexyAttr_toggleFlag(nls, b, LAYOUT_TAB_EXPANDED);
  3218.         break;
  3219.  
  3220.       case 'fullscreen':
  3221.         b = isNonEmptyString(kRef(ytdFlexy).getAttribute('fullscreen'));
  3222.         nls = flexyAttr_toggleFlag(nls, b, LAYOUT_FULLSCREEN);
  3223.         break;
  3224.  
  3225.       case 'userscript-engagement-panel':
  3226.         v = kRef(ytdFlexy).getAttribute('userscript-engagement-panel');
  3227.         b = (+v > 0)
  3228.         nls = flexyAttr_toggleFlag(nls, b, LAYOUT_ENGAGEMENT_PANEL_EXPAND);
  3229.         break;
  3230.  
  3231.     }
  3232.  
  3233.     return nls;
  3234.  
  3235.  
  3236.   }
  3237.  
  3238.   let mtf_attrFlexy = (mutations, observer) => {
  3239.  
  3240.     //attr mutation checker - $$ytdFlexyElm$$ {ytd-watch-flexy} \single
  3241.     //::attr    
  3242.     // ~ 'userscript-chat-collapsed', 'userscript-chatblock', 'theater', 'is-two-columns_', 
  3243.     // ~ 'tabview-selection', 'fullscreen', 'userscript-engagement-panel', 
  3244.     // ~ 'hidden'
  3245.  
  3246.     //console.log(15330, scriptEnable, kRef(ytdFlexy), mutations)
  3247.  
  3248.     if (!scriptEnable) return;
  3249.  
  3250.     const cssElm = kRef(ytdFlexy)
  3251.     if (!cssElm) return;
  3252.  
  3253.     if (!mutations) return;
  3254.  
  3255.     //console.log(15340)
  3256.     ytdFlexyHiddenCheck(mutations);
  3257.  
  3258.     const old_layoutStatus = wls.layoutStatus
  3259.     if (old_layoutStatus === null) return;
  3260.     let new_layoutStatus = old_layoutStatus;
  3261.  
  3262.     let checkedChat = false;
  3263.  
  3264.     for (const mutation of mutations) {
  3265.       new_layoutStatus = flexAttr_toLayoutStatus(new_layoutStatus, mutation.attributeName);
  3266.       if (mutation.attributeName == 'userscript-chat-collapsed' || mutation.attributeName == 'userscript-chatblock') {
  3267.  
  3268.         if(!checkedChat){
  3269.           checkedChat = true; // avoid double call
  3270.  
  3271.           if (cssElm.getAttribute('userscript-chatblock') === 'chat-live') {
  3272.             // assigned new attribute - "chat-live" => disable comments section
  3273.             _disableComments();
  3274.           }
  3275.  
  3276.           if (!cssElm.hasAttribute('userscript-chatblock')) {
  3277.             // might or might not collapsed before
  3278.             timeline.setTimeout(() => {
  3279.               if (!scriptEnable) return;
  3280.               //delayed call => check with the "no active focus" condition with chatroom status
  3281.               if (!isAnyActiveTab() && !isChatExpand() && !isTheater() && isWideScreenWithTwoColumns() && !isFullScreen()) {
  3282.                 setToActiveTab();
  3283.               }
  3284.             }, 240);
  3285.           }
  3286.         }
  3287.  
  3288.       }else if(mutation.attributeName == 'userscript-engagement-panel'){
  3289.         // assume any other active component such as tab content and chatroom
  3290.         
  3291.         if (+(cssElm.getAttribute('userscript-engagement-panel')||0)===0 && +mutation.oldValue>0) {
  3292.           timeline.setTimeout(() => {
  3293.             if (!scriptEnable) return;
  3294.             //delayed call => check with the "no active focus" condition with engagement panel status
  3295.             if (!isAnyActiveTab() && !isEngagementPanelExpanded() && !isTheater() && isWideScreenWithTwoColumns() && !isFullScreen()) {
  3296.               setToActiveTab();
  3297.             }
  3298.           }, 240);
  3299.         }
  3300.       }
  3301.     }
  3302.  
  3303.     if (new_layoutStatus !== old_layoutStatus) wls.layoutStatus = new_layoutStatus
  3304.  
  3305.   }
  3306.  
  3307.   const mtf_checkFlexy = () => {
  3308.     // once per $$native-ytd-watch-flexy$$ {ytd-watch-flexy} detection
  3309.  
  3310.     let ytdFlexyElm = kRef(ytdFlexy);
  3311.     if (!scriptEnable || !ytdFlexyElm) return true;
  3312.  
  3313.  
  3314.     wls.layoutStatus = null;
  3315.  
  3316.     let isFlexyHidden = (deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden'));
  3317.  
  3318.     if (!isFlexyHidden) {
  3319.       let rChatExist = base_ChatExist();
  3320.       if (rChatExist) {
  3321.         let { attr_chatblock, attr_chatcollapsed } = rChatExist;
  3322.         if (attr_chatblock === null) {
  3323.           //remove attribute if it is unknown
  3324.           attr_chatblock = false;
  3325.           attr_chatcollapsed = false;
  3326.         }
  3327.         wAttr(ytdFlexyElm, 'userscript-chatblock', attr_chatblock)
  3328.         wAttr(ytdFlexyElm, 'userscript-chat-collapsed', attr_chatcollapsed)
  3329.       }
  3330.     }
  3331.  
  3332.     let rTabSelection = [...ytdFlexyElm.querySelectorAll('.tab-btn[userscript-tab-content]')]
  3333.       .map(elm => ({ elm, hidden: elm.classList.contains('tab-btn-hidden') }));
  3334.  
  3335.     if(rTabSelection.length === 0){
  3336.       wAttr(ytdFlexyElm, 'tabview-selection', false);
  3337.     }else{
  3338.       rTabSelection=rTabSelection.filter(entry => entry.hidden !== true); // all available tabs
  3339.       if (rTabSelection.length === 0) wAttr(ytdFlexyElm, 'tabview-selection', '');
  3340.     }
  3341.     rTabSelection = null;
  3342.       
  3343.     let rEP = engagement_panels_();
  3344.     if (rEP && rEP.count > 0) wAttr(ytdFlexyElm, 'userscript-engagement-panel', false);
  3345.     //else wAttr(ytdFlexyElm, 'userscript-engagement-panel', rEP.value + ""); // can be 0
  3346.     else if(rEP.value>0) wAttr(ytdFlexyElm, 'userscript-engagement-panel', rEP.value + ""); // can be 0
  3347.  
  3348.     let ls = 0;
  3349.     ls = flexAttr_toLayoutStatus(ls, 'theater')
  3350.     ls = flexAttr_toLayoutStatus(ls, 'userscript-chat-collapsed')
  3351.     ls = flexAttr_toLayoutStatus(ls, 'userscript-chatblock')
  3352.     ls = flexAttr_toLayoutStatus(ls, 'is-two-columns_')
  3353.     ls = flexAttr_toLayoutStatus(ls, 'tabview-selection')
  3354.     ls = flexAttr_toLayoutStatus(ls, 'fullscreen')
  3355.     ls = flexAttr_toLayoutStatus(ls, 'userscript-engagement-panel')
  3356.  
  3357.     wls.layoutStatus = ls
  3358.  
  3359.     mtoFlexyAttr.bindElement(ytdFlexyElm,{
  3360.       attributes: true,
  3361.       attributeFilter: ['userscript-chat-collapsed', 'userscript-chatblock', 'theater', 'is-two-columns_', 'tabview-selection', 'fullscreen', 'userscript-engagement-panel', 'hidden'],
  3362.       attributeOldValue: true
  3363.     })
  3364.  
  3365.     ytdFlexyHiddenCheckBasic(ytdFlexyElm);
  3366.  
  3367.  
  3368.     let columns = document.querySelector('ytd-page-manager#page-manager #columns')
  3369.     if (columns) {
  3370.       wAttr(columns, 'userscript-scrollbar-render', true);
  3371.     }
  3372.  
  3373.     return false;
  3374.   }
  3375.   
  3376.  
  3377.   function ytdFlexyHiddenCheckBasic(ytdFlexyElm){
  3378.     // for both hidden and non-hidden ytd-watch-flexy
  3379.  
  3380.     deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden');
  3381.  
  3382.    // console.log(15403)
  3383.     document.documentElement.classList.toggle('tabview-normal-player',!deferredVarYTDHidden)
  3384.  
  3385.   }
  3386.  
  3387.   function checkVisibleEngagementPanel(){
  3388.     
  3389.     if(storeLastPanel){
  3390.  
  3391.       let elm_storeLastPanel = kRef(storeLastPanel);
  3392.  
  3393.       if(elm_storeLastPanel && !isDOMVisible(elm_storeLastPanel) ){
  3394.         storeLastPanel=null;
  3395.         ytBtnCloseEngagementPanels();
  3396.       }
  3397.  
  3398.     }
  3399.  
  3400.   }
  3401.  
  3402.   function ytdFlexyHiddenCheck(mutations) {
  3403.  
  3404.     //console.log(15350)
  3405.  
  3406.     const ytdFlexyElm = kRef(ytdFlexy)
  3407.     if (!ytdFlexyElm) return;
  3408.     let muHidden = false
  3409.  
  3410.     for (const mutation of mutations) {
  3411.       if (mutation.attributeName === 'hidden') {
  3412.         //console.log(343)
  3413.         muHidden = true;
  3414.         break;
  3415.       }
  3416.     }
  3417.  
  3418.     if (!muHidden) return;
  3419.     
  3420.  
  3421.     
  3422.     mtc_store= Date.now()+2870
  3423.     //console.log(7004)
  3424.     deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden');
  3425.  
  3426.     
  3427.     if(deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0){
  3428.       scheduledCommentRefresh=false;
  3429.     } 
  3430.  
  3431.     //console.log(15400)
  3432.     if(!deferredVarYTDHidden){
  3433.       mtf_forceCheckLiveVideo_disable = 0  
  3434.       timeline.setTimeout(function() {
  3435.         mtf_ChatExist();  
  3436.         layoutStatusMutex.lockWith(unlock=>{
  3437.           atChange(); // in case no mutation occurance
  3438.           ytdFlexyHiddenCheckBasic(ytdFlexyElm);
  3439.           dispatchWindowResize(); // player control positioning
  3440.           timeline.setTimeout(unlock, 40);          
  3441.         })        
  3442.       }, 40);
  3443.     }else{
  3444.       //console.log(15401)
  3445.       timeline.setTimeout(function() {
  3446.         //console.log(15402)
  3447.         ytdFlexyHiddenCheckBasic(ytdFlexyElm);
  3448.       }, 40);
  3449.     }
  3450.  
  3451.   }
  3452.  
  3453.  
  3454.  
  3455.  
  3456.   let switchTabActivity_lastTab = null
  3457.  
  3458.   function setDisplayedPlaylist() {
  3459.     //override the default youtube coding event prevention
  3460.     let cssElm = kRef(ytdFlexy);
  3461.     if (!scriptEnable || !cssElm) return;
  3462.     displayedPlaylist = mWeakRef(document.querySelector('ytd-watch-flexy #tab-list:not(.tab-content-hidden) ytd-playlist-panel-renderer') || null);
  3463.   }
  3464.  
  3465.   function fixLineClampFn1() {
  3466.     // use IntersectionObserver for new browser
  3467.     
  3468.     if(!isIntersectionObserverAvailable)
  3469.     timeline.setTimeout(() => requestAnimationFrame(() => new Promise(fixLineClampFn2)), 1)
  3470.   }
  3471.  
  3472.   //let lastFixLineClamp = 0
  3473.   //let mConstructor = null
  3474.   const isIntersectionObserverAvailable= !!window.IntersectionObserver;
  3475.   function fixLineClampFn2() {
  3476.     //let currentTime= Date.now();
  3477.     //if(currentTime)
  3478.     let contentElements = document.querySelectorAll('ytd-comments#comments ytd-expander[max-number-of-lines] > #content.ytd-expander:not(.tabview-fix-line-clamp)'); 
  3479.           // backward compatible with Waterfox Classic 
  3480.       // let contentElements = document.querySelectorAll('ytd-comments#comments ytd-expander[should-use-number-of-lines] > #content') 
  3481.     for (const elm of contentElements){
  3482.       //nativeValue(elm.parentNode,'recomputeOnResize',true)
  3483.  
  3484.       // loading -> fetched -> loaded in non-visual mode
  3485.       // require to trigger the update using mutation observer for line clamp
  3486.       elm.classList.toggle('tabview-fix-line-clamp'); // this is to trigger mutation observer in dekstop_polymer.js
  3487.   
  3488.     }
  3489.     nativeFuncStacked('ytd-comments#comments ytd-expander[max-number-of-lines]', 'calculateCanCollapse'); 
  3490.     
  3491.     //nativeConstStacked('ytd-comments#comments ytd-expander[max-number-of-lines]', 'recomputeOnResize',true); 
  3492.     contentElements = null;
  3493.   }
  3494.   
  3495.  
  3496.   function switchTabActivity(activeLink) {
  3497.     if (!scriptEnable) return;
  3498.  
  3499.     const ytdFlexyElm = kRef(ytdFlexy);
  3500.  
  3501.     if (!ytdFlexyElm) return;
  3502.  
  3503.     if (activeLink && activeLink.classList.contains('tab-btn-hidden')) return; // not allow to switch to hide tab
  3504.  
  3505.     if (isTheater() && isWideScreenWithTwoColumns()) activeLink = null;
  3506.  
  3507.  
  3508.     function runAtEnd() {
  3509.  
  3510.       
  3511.     //console.log(12312)
  3512.  
  3513.       if (activeLink) lastShowTab = activeLink.getAttribute('userscript-tab-content')
  3514.  
  3515.       displayedPlaylist = null;
  3516.       scrollingVideosList = null;
  3517.  
  3518.       if (activeLink && lastShowTab == '#tab-list') {
  3519.         setDisplayedPlaylist();
  3520.       } else if (activeLink && lastShowTab == '#tab-videos') {
  3521.         scrollingVideosList = mWeakRef(document.querySelector('ytd-watch-flexy #tab-videos:not(.tab-content-hidden) [placeholder-videos]'));
  3522.       }
  3523.  
  3524.  
  3525.       ytdFlexyElm.setAttribute('tabview-selection', activeLink ? lastShowTab : '')
  3526.  
  3527.       if (lastShowTab == '#tab-comments' && (ytdFlexyElm.getAttribute('tabview-youtube-comments') || '').lastIndexOf('S') >= 0) {
  3528.  
  3529.         
  3530.         if(mtf_forceCheckLiveVideo_disable===2) {}
  3531.         else{
  3532.           akAttr(ytdFlexyElm, 'tabview-youtube-comments', false, 'L');
  3533.  
  3534.           requestAnimationFrame(() => {
  3535.             let comments_tab = document.querySelector('#tab-comments');
  3536.             if (comments_tab && comments_tab.scrollTop > 0) comments_tab.scrollTop = 0;
  3537.           });
  3538.         }
  3539.  
  3540.       }
  3541.  
  3542.       if (lastShowTab == '#tab-comments') {
  3543.         fixLineClampFn1();
  3544.       }
  3545.  
  3546.     }
  3547.  
  3548.     const links = document.querySelectorAll('#material-tabs a[userscript-tab-content]');
  3549.  
  3550.  
  3551.  
  3552.     for (const link of links) {
  3553.       let content = document.querySelector(link.getAttribute('userscript-tab-content'));
  3554.       if (link && content) {
  3555.         if (link !== activeLink) {
  3556.           link.classList.remove("active");
  3557.           content.classList.add("tab-content-hidden");
  3558.         } else {
  3559.           link.classList.add("active");
  3560.           content.classList.remove("tab-content-hidden");
  3561.           //timeline.setTimeout(()=>content.focus(),400);
  3562.  
  3563.         }
  3564.       }
  3565.     }
  3566.  
  3567.     runAtEnd();
  3568.  
  3569.  
  3570.   }
  3571.  
  3572.   let tabsUiScript_setclick = false;
  3573.  
  3574.   function prepareTabBtn() {
  3575.  
  3576.     const materialTab = document.querySelector("#material-tabs")
  3577.     if (!materialTab) return;
  3578.  
  3579.     let noActiveTab = !!document.querySelector('ytd-watch-flexy[userscript-chatblock]:not([userscript-chat-collapsed])')
  3580.  
  3581.     const activeLink = materialTab.querySelector('a[userscript-tab-content].active:not(.tab-btn-hidden)')
  3582.     if (activeLink) switchTabActivity(noActiveTab ? null : activeLink)
  3583.  
  3584.     if (!tabsUiScript_setclick) {
  3585.       tabsUiScript_setclick = true;
  3586.       $(materialTab).on("click", "a", function(evt) {
  3587.  
  3588.         //console.log(8510)
  3589.         let ytdFlexyElm = kRef(ytdFlexy);
  3590.         if (!scriptEnable || !ytdFlexyElm) return null;
  3591.  
  3592.         if (!this.hasAttribute('userscript-tab-content')) return;
  3593.  
  3594.  
  3595.         evt.preventDefault();
  3596.  
  3597.         //console.log(8511)
  3598.  
  3599. /*
  3600.         if (this.getAttribute('userscript-tab-content') == '#tab-comments' && parseInt(ytdFlexyElm.getAttribute('tabview-youtube-comments') || '') < 0) {
  3601.           
  3602.         console.log(8512)
  3603.           return;
  3604.         }*/
  3605.  
  3606.         //console.log(8513)
  3607.         new Promise(requestAnimationFrame).then(() => {
  3608.  
  3609.  
  3610.           //console.log(8514)
  3611.           layoutStatusMutex.lockWith(unlock => {
  3612.  
  3613.             //console.log(8515)
  3614.             switchTabActivity_lastTab = this.getAttribute('userscript-tab-content');
  3615.  
  3616.             let isActiveAndVisible = this.classList.contains('tab-btn') && this.classList.contains('active') && !this.classList.contains('tab-btn-hidden')
  3617.  
  3618.             if (isWideScreenWithTwoColumns() && !isTheater() && isActiveAndVisible) {
  3619.               //optional
  3620.               timeline.setTimeout(unlock, 80);
  3621.               switchTabActivity(null);
  3622.               ytBtnSetTheater();
  3623.             } else if (isActiveAndVisible) {
  3624.               timeline.setTimeout(unlock, 80);
  3625.               switchTabActivity(null);
  3626.             } else {
  3627.               let pInterval = 60;
  3628.               if (isChatExpand() && isWideScreenWithTwoColumns()) {
  3629.                 ytBtnCollapseChat();
  3630.               } else if (isEngagementPanelExpanded() && isWideScreenWithTwoColumns()) {
  3631.                 ytBtnCloseEngagementPanels();
  3632.               } else if (isWideScreenWithTwoColumns() && isTheater() && !isFullScreen()) {
  3633.                 ytBtnCancelTheater();
  3634.               } else {
  3635.                 pInterval = 20;
  3636.               }
  3637.               //console.log(8518)
  3638.               timeline.setTimeout(() => {
  3639.                 timeline.setTimeout(makeBodyScroll, 20); // this is to make the image render
  3640.  
  3641.                 timeline.setTimeout(() => {
  3642.                   let rightTabs = document.querySelector('#right-tabs');
  3643.                   if (!isWideScreenWithTwoColumns() && rightTabs && rightTabs.offsetTop > 0 && this.classList.contains('active')) {
  3644.                     let tabButtonBar = document.querySelector('#material-tabs');
  3645.                     let tabButtonBarHeight = tabButtonBar ? tabButtonBar.offsetHeight : 0;
  3646.                     window.scrollTo(0, rightTabs.offsetTop - tabButtonBarHeight);
  3647.                   }
  3648.                 }, 60)
  3649.                // console.log(8519)
  3650.  
  3651.                 timeline.setTimeout(unlock, 80)
  3652.                 switchTabActivity(this)
  3653.  
  3654.               }, pInterval);
  3655.             }
  3656.  
  3657.  
  3658.           })
  3659.  
  3660.         })
  3661.  
  3662.  
  3663.  
  3664.  
  3665.       });
  3666.  
  3667.     }
  3668.  
  3669.   }
  3670.  
  3671.  
  3672.   // ---------------------------------------------------------------------------------------------
  3673.   window.addEventListener("yt-navigate-finish", onNavigationEnd)
  3674.  
  3675.   document.addEventListener("loadstart", (evt) => {
  3676.     if (!evt || !evt.target || evt.target.nodeName !== "VIDEO") return;
  3677.     let elm = evt.target;
  3678.     if (!elm.matches('#player video, #movie_player video, video[tabview-mainvideo]')) return;
  3679.  
  3680.     
  3681.     mtc_store= Date.now()+2870
  3682.  
  3683.     let src = elm.src;
  3684.     if (src !== lastVideoURL) {
  3685.       lastVideoURL = elm.src;
  3686.       elm.setAttribute('tabview-mainvideo', ''); // mainly for mini playing
  3687.     }
  3688.  
  3689.   }, true)
  3690.  
  3691.   // ---------------------------------------------------------------------------------------------
  3692.  
  3693.   let scrolling_lastD = 0;
  3694.  
  3695.   const singleColumnScrolling = function(scrolling_lastF) {
  3696.     
  3697.     if (!scriptEnable || deferredVarYTDHidden) return;
  3698.  
  3699.     let pageY = scrollY;
  3700.     if (pageY < 10 && scrolling_lastD === 0 && !scrolling_lastF) return;
  3701.  
  3702.     let targetElm, header, navElm;
  3703.  
  3704.     Promise.resolve().then(() => {
  3705.  
  3706.       targetElm = document.querySelector("#right-tabs");
  3707.       if (!targetElm) return;
  3708.       header = targetElm.querySelector("header");
  3709.       if (!header) return;
  3710.       navElm = document.querySelector('#masthead-container, #masthead')
  3711.       if (!navElm) return;
  3712.       let navHeight = navElm ? navElm.offsetHeight : 0
  3713.  
  3714.       let elmY = targetElm.offsetTop
  3715.  
  3716.       let xyz = [elmY + navHeight, pageY, elmY - navHeight]
  3717.  
  3718.       let xyStatus = 0
  3719.       if (xyz[1] < xyz[2] && xyz[2] < xyz[0]) {
  3720.         // 1
  3721.         xyStatus = 1
  3722.       }
  3723.  
  3724.       if (xyz[0] > xyz[1] && xyz[1] > xyz[2]) {
  3725.  
  3726.         //2
  3727.         xyStatus = 2
  3728.  
  3729.       }
  3730.  
  3731.       if (xyz[2] < xyz[0] && xyz[0] < xyz[1]) {
  3732.         // 3
  3733.  
  3734.         xyStatus = 3
  3735.  
  3736.  
  3737.       }
  3738.  
  3739.       return xyStatus;
  3740.  
  3741.     }).then((xyStatus) => {
  3742.  
  3743.       if ((xyStatus == 2 || xyStatus == 3) && (scrolling_lastD === 0 || scrolling_lastF)) {
  3744.         scrolling_lastD = 1;
  3745.         let {
  3746.           offsetHeight
  3747.         } = header
  3748.         let {
  3749.           offsetWidth
  3750.         } = targetElm
  3751.  
  3752.         targetElm.style.setProperty("--userscript-sticky-width", offsetWidth + 'px')
  3753.         targetElm.style.setProperty("--userscript-sticky", offsetHeight + 'px')
  3754.  
  3755.         wAttr(targetElm, 'userscript-sticky', true);
  3756.  
  3757.       } else if ((xyStatus == 1) && (scrolling_lastD === 1 || scrolling_lastF)) {
  3758.         scrolling_lastD = 0;
  3759.  
  3760.         wAttr(targetElm, 'userscript-sticky', false);
  3761.       }
  3762.  
  3763.  
  3764.       targetElm = null;
  3765.       header = null;
  3766.       navElm = null;
  3767.  
  3768.     });
  3769.  
  3770.   };
  3771.  
  3772.   window.addEventListener("scroll", function() {
  3773.     singleColumnScrolling(false)
  3774.   }, {
  3775.     capture: false,
  3776.     passive: true
  3777.   })
  3778.  
  3779.   let lastResizeAt = 0;
  3780.   window.addEventListener('resize', function() {
  3781.  
  3782.     if (!scriptEnable) return;
  3783.     if (deferredVarYTDHidden) return;
  3784.     lastResizeAt = Date.now();
  3785.  
  3786.     requestAnimationFrame(() => {
  3787.       singleColumnScrolling(true)
  3788.     })
  3789.  
  3790.     if(lastShowTab == '#tab-comments') fixLineClampFn1() // in case window resized leading the change of number of lines.
  3791.  
  3792.   }, {
  3793.     capture: false,
  3794.     passive: true
  3795.   })
  3796.  
  3797.  
  3798.  
  3799.   
  3800.   let hist = null
  3801.   const getHistState = (history)=>`${history.length}|${history.state?history.state.entryTime:null}`;
  3802.   function newVideoPageCheck(){
  3803.     let hState = getHistState(history)
  3804.     if(hist!==hState) {
  3805.       hist=hState;
  3806.       if(scriptEnable){
  3807.         //scriptEnable = false;
  3808.         let callTimeout = !newVideoPage.entryTime
  3809.         newVideoPage.entryTime = 1
  3810.         if(callTimeout) setTimeout(newVideoPage,0)
  3811.         
  3812.       }
  3813.       return true;
  3814.     }
  3815.   }
  3816.   function newVideoPage(){
  3817.     newVideoPage.entryTime = 0;
  3818.  
  3819.     console.log('newVideoPage')
  3820.     
  3821.     //console.log('newVideoPage-', 150, location.href)
  3822.  
  3823.     let ytdFlexyElm = kRef(ytdFlexy);
  3824.     if(!ytdFlexyElm) return;
  3825.  
  3826.     timeline.reset();
  3827.     layoutStatusMutex = new Mutex();
  3828.  
  3829.     //console.log('newVideoPage-', 350, location.href)
  3830.     
  3831.     let flag1= /^https?\:\/\/(\w+\.)*youtube\.com\/watch\?(\w+\=[^\/\?\&]+\&|\w+\=?\&)*v=[\w\-\_]+/.test(location.href)
  3832.     let tf = ()=>{
  3833.  
  3834.       let isFlexyHidden = (deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden'));
  3835.  
  3836.       let flag2 = !isFlexyHidden;
  3837.  
  3838.       if(flag1^flag2) return timeline.setTimeout(tf,7); else funcVisibleWatch();
  3839.  
  3840.       tf= null;
  3841.       funcVisibleWatch = null;
  3842.       ytdFlexyElm=null
  3843.  
  3844.     }
  3845.  
  3846.     let funcVisibleWatch = ()=>{
  3847.       
  3848.       //scriptEnable = true;
  3849.  
  3850.       let isFlexyHidden = (deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden'));
  3851.       ytdFlexyHiddenCheckBasic(ytdFlexyElm)
  3852.  
  3853.       if(!isFlexyHidden) {
  3854.  
  3855.         mtf_forceCheckLiveVideo_disable = 0;
  3856.         mtc_store= Date.now()+2870
  3857.  
  3858.         sect_lastUpdate = 0;
  3859.         if(pendingOne){
  3860.           // reset pendingOne = false if the element is already removed.
  3861.           pendingOne = document.querySelectorAll(`ytd-watch-flexy ytd-comments#comments [tabview-cache-time]`).length>1;
  3862.         }
  3863.  
  3864.         timeline.setTimeout(()=>{
  3865.           Q.mutationTarget=null;
  3866.           FP.mtf_attrComments()
  3867.         },2870)
  3868.     
  3869.         if(pageInit_attrComments) hookSection();
  3870.  
  3871.  
  3872.  
  3873.  
  3874.  
  3875.         
  3876.         let new_layoutStatus = wls.layoutStatus 
  3877.  
  3878.         const new_isExpandedChat = !(new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  3879.         const new_isCollaspedChat = (new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  3880.     
  3881.         const new_isTwoColumns = new_layoutStatus & LAYOUT_TWO_COLUMNS;
  3882.         const new_isTheater = new_layoutStatus & LAYOUT_THEATER;
  3883.         const new_isTabExpanded = new_layoutStatus & LAYOUT_TAB_EXPANDED;
  3884.         const new_isFullScreen = new_layoutStatus & LAYOUT_FULLSCREEN;
  3885.         const new_isExpandEPanel = new_layoutStatus & LAYOUT_ENGAGEMENT_PANEL_EXPAND;
  3886.  
  3887.         /*
  3888.         console.log('d67',
  3889.         
  3890.         ytdFlexyElm.getAttribute('tabview-selection')==='' ,
  3891.          new_isTwoColumns , !new_isTheater, !new_isTabExpanded, !new_isFullScreen , !new_isExpandEPanel , !new_isExpandedChat
  3892.  
  3893.         )
  3894.         */
  3895.  
  3896.         if( ytdFlexyElm.getAttribute('tabview-selection')==='' && new_isTwoColumns && !new_isTheater && !new_isTabExpanded && !new_isFullScreen && !new_isExpandEPanel && !new_isExpandedChat ){
  3897.           // e.g. engage panel removed after miniview and change video
  3898.           setToActiveTab();
  3899.         }else if(new_isExpandEPanel && ytdFlexyElm.querySelectorAll('ytd-engagement-panel-section-list-renderer[visibility="ENGAGEMENT_PANEL_VISIBILITY_EXPANDED"]').length===0){
  3900.           wls.layoutStatus = new_layoutStatus & (~LAYOUT_ENGAGEMENT_PANEL_EXPAND)
  3901.         }
  3902.  
  3903.         //mtf_attrFlexy();
  3904.  
  3905.         FP.mtf_attrEngagementPanel();
  3906.       
  3907.         FP.mtf_attrPlaylist();
  3908.       
  3909.         FP.mtf_attrComments();   
  3910.       
  3911.         FP.mtf_attrChatroom();
  3912.  
  3913.  
  3914.       }
  3915.  
  3916.       regularCheck(1,0,null); // mutation happens when the page is not ready; call again as the page is ready.
  3917.  
  3918.  
  3919.  
  3920.       
  3921.  
  3922.     }
  3923.     
  3924.  
  3925.     
  3926.     tf();
  3927.     
  3928.  
  3929.  
  3930.   }
  3931.  
  3932.  
  3933.  
  3934.   function browserHistoryState(){
  3935.     let maxCount = 5
  3936.  
  3937.     if (!scriptEnable) return;
  3938.     
  3939.     let ytdFlexyElm = kRef(ytdFlexy);
  3940.     if(!ytdFlexyElm) return;
  3941.  
  3942.     let cid = timeline.setInterval(function(){
  3943.       if(newVideoPageCheck()){
  3944.         timeline.clearInterval(cid);
  3945.       }
  3946.       if(--maxCount===0) timeline.clearInterval(cid);
  3947.     },7)
  3948.  
  3949.   }
  3950.  
  3951.  
  3952.   window.addEventListener('hashchange', function() {
  3953.     if (!scriptEnable) return;
  3954.     console.log('hashchange');
  3955.     browserHistoryState();
  3956.   }, { capture: true })
  3957.  
  3958.   window.addEventListener('popstate', function() {
  3959.     if (!scriptEnable) return;
  3960.     console.log('popstate');
  3961.     browserHistoryState();
  3962.   }, { capture: true })
  3963.  
  3964.  
  3965.   // function clearMutationObserver(o, key) {
  3966.   //   if (o[key]) {
  3967.   //     o[key].takeRecords();
  3968.   //     o[key].disconnect();
  3969.   //     o[key] = null;
  3970.   //     return true;
  3971.   //   }
  3972.   // }
  3973.  
  3974.   // function initMutationObserver(o, key, callback) {
  3975.   //   clearMutationObserver(o, key);
  3976.   //   const mto = new MutationObserver(callback);
  3977.   //   o[key] = mto;
  3978.   //   return mto;
  3979.   // }
  3980.   // function initMutationObserver2(o, key, mtoFunc) {
  3981.   //   clearMutationObserver(o, key);
  3982.   //   const mto = mtoFunc();
  3983.   //   o[key] = mto;
  3984.   //   return mto;
  3985.   // }
  3986.  
  3987.   document.addEventListener('wheel', function(evt) {
  3988.  
  3989.     if (!scriptEnable) return;
  3990.     const displayedPlaylist_element = kRef(displayedPlaylist);
  3991.     if (displayedPlaylist_element && displayedPlaylist_element.contains(evt.target)) {
  3992.       evt.stopPropagation();
  3993.       evt.stopImmediatePropagation();
  3994.     }
  3995.   }, { capture: true, passive: true });
  3996.  
  3997.  
  3998.   function setVideosTwoColumns(flag, bool) {
  3999.  
  4000.     //two columns to one column
  4001.  
  4002.     /*
  4003.         [placeholder-videos] ytd-watch-next-secondary-results-renderer.style-scope.ytd-watch-flexy
  4004.  
  4005.         is-two-columns =""  => no is-two-columns
  4006.         
  4007.         
  4008.         
  4009.         [placeholder-videos] tp-yt-paper-spinner#spinner.style-scope.ytd-continuation-item-renderer
  4010.         
  4011.         no hidden => hidden =""
  4012.         
  4013.         
  4014.         [placeholder-videos] div#button.style-scope.ytd-continuation-item-renderer
  4015.         
  4016.         
  4017.         hidden ="" => no hidden
  4018.         
  4019.  
  4020.         */
  4021.  
  4022.     let cssSelector1 = '[placeholder-videos] ytd-watch-next-secondary-results-renderer.style-scope.ytd-watch-flexy'
  4023.  
  4024.     let cssSelector2 = '[placeholder-videos] tp-yt-paper-spinner#spinner.style-scope.ytd-continuation-item-renderer'
  4025.  
  4026.     let cssSelector3 = '[placeholder-videos] div#button.style-scope.ytd-continuation-item-renderer'
  4027.  
  4028.     let res = {}
  4029.     if (flag & 1) {
  4030.       res.m1 = document.querySelector(cssSelector1)
  4031.       if (res.m1) wAttr(res.m1, 'is-two-columns', bool ? '' : false);
  4032.     }
  4033.  
  4034.     if (flag & 2) {
  4035.       res.m2 = document.querySelector(cssSelector2)
  4036.       if (res.m2) wAttr(res.m2, 'hidden', bool ? false : '');
  4037.     }
  4038.  
  4039.     if (flag & 4) {
  4040.       res.m3 = document.querySelector(cssSelector3)
  4041.       if (res.m3) wAttr(res.m3, 'hidden', bool ? '' : false);
  4042.     }
  4043.  
  4044.  
  4045.     return res
  4046.  
  4047.  
  4048.  
  4049.  
  4050.   }
  4051.  
  4052.   let lastScrollFetch = 0;
  4053.   // function isScrolledToEnd(){
  4054.   //     return (window.innerHeight + window.pageYOffset) >= document.scrollingElement.scrollHeight - 2;
  4055.   // }
  4056.   let lastOffsetTop = 0;
  4057.   window.addEventListener('scroll', function(evt) {
  4058.  
  4059.     //console.log(evt.target)
  4060.  
  4061.     if (!scriptEnable) return;
  4062.  
  4063.  
  4064.     if (!kRef(scrollingVideosList)) return;
  4065.     if (videoListBeforeSearch) return;
  4066.  
  4067.  
  4068.  
  4069.     let visibleHeight = document.scrollingElement.clientHeight;
  4070.     let totalHeight = document.scrollingElement.scrollHeight;
  4071.  
  4072.     if (totalHeight < visibleHeight * 1.5) return; // filter out two column view;
  4073.  
  4074.     let z = window.pageYOffset + visibleHeight;
  4075.     let h_advanced = totalHeight - (visibleHeight > 5 * 40 ? visibleHeight * 0.5 : 40);
  4076.  
  4077.  
  4078.  
  4079.     if (z > h_advanced && !isWideScreenWithTwoColumns()) {
  4080.  
  4081.       let ct = Date.now();
  4082.       if (ct - lastScrollFetch < 500) return; //prevent continuous calling
  4083.  
  4084.       lastScrollFetch = ct;
  4085.  
  4086.       let res = setVideosTwoColumns(2 | 4, true)
  4087.       if (res.m3 && res.m2) {
  4088.  
  4089.         //wait for DOM change, just in case
  4090.         requestAnimationFrame(() => {
  4091.           let { offsetTop } = res.m2 // as visibility of m2 & m3 switched.
  4092.  
  4093.           if (offsetTop - lastOffsetTop < 40) return; // in case bug, or repeating calling.  // the next button shall below the this button 
  4094.           lastOffsetTop = offsetTop
  4095.  
  4096.           res.m2.parentNode.dispatchEvent(new Event('yt-service-request-sent-button-renderer'))
  4097.  
  4098.           res = null
  4099.         })
  4100.  
  4101.       } else {
  4102.  
  4103.         res = null
  4104.       }
  4105.  
  4106.  
  4107.     }
  4108.  
  4109.  
  4110.  
  4111.  
  4112.   }, { passive: true })
  4113.  
  4114.   let sect_lastUpdate = 0;
  4115.  
  4116.   let sect_holder = null;
  4117.   let sect_hText = null;
  4118.   let sect_hTime = 0;
  4119.  
  4120.   let pendingOne = false;
  4121.   let mtf_forceCheckLiveVideo_disable = 0;
  4122.  
  4123.   let storeLastPanel = null;
  4124.  
  4125.   let deferredVarYTDHidden = null;
  4126.   let scheduledCommentRefresh = false;
  4127.  
  4128.   let pageInit_attrComments = false;
  4129.  
  4130.  
  4131.  
  4132.   let mgChatFrame = {
  4133.     setVar(elm) {
  4134.       mgChatFrame.kVar = mWeakRef(elm)
  4135.     },
  4136.     getVar() {
  4137.       return kRef(mgChatFrame.kVar)
  4138.     },
  4139.     inPage() {
  4140.       let elm = mgChatFrame.getVar();
  4141.       if (!elm) return false;
  4142.       let ytdFlexyElm = kRef(ytdFlexy);
  4143.       if(!ytdFlexyElm) return false;
  4144.       return ytdFlexyElm.contains(elm)
  4145.     }
  4146.   };
  4147.  
  4148.   const timeline = {
  4149.     // after initialized (initObserver)
  4150.     cn1:{},
  4151.     cn2:{},
  4152.     setTimeout(f,d){
  4153.       return timeline.cn1[setTimeout(f,d)]=true
  4154.     },
  4155.     clearTimeout(cid){
  4156.       timeline.cn1[cid]=false; return clearTimeout(cid)
  4157.     },
  4158.     setInterval(f,d){
  4159.       return timeline.cn2[setInterval(f,d)]=true
  4160.     },
  4161.     clearInterval(cid){
  4162.       timeline.cn2[cid]=false; return clearInterval(cid)
  4163.     },
  4164.     reset(){
  4165.       for(let cid in timeline.cn1) timeline.cn1[cid] && clearTimeout(cid)
  4166.       for(let cid in timeline.cn2) timeline.cn2[cid] && clearInterval(cid)
  4167.       timeline.cn1={}
  4168.       timeline.cn2={}
  4169.     }
  4170.   }
  4171.  
  4172.   class AttributeMutationObserver extends MutationObserver {
  4173.     constructor(flist){
  4174.       super((mutations, observer)=>{
  4175.         for(const mutation of mutations){
  4176.           if (mutation.type === 'attributes') {
  4177.             this.checker(mutation.target, mutation.attributeName)
  4178.           }
  4179.         }
  4180.       })
  4181.       this.flist=flist;
  4182.       this.res={}
  4183.     }
  4184.     
  4185.     takeRecords(){
  4186.       super.takeRecords();
  4187.     }
  4188.     disconnect(){
  4189.       this._target = null;
  4190.       super.disconnect();
  4191.     }
  4192.     observe(target){
  4193.       if(this._target) return; 
  4194.       this._target = mWeakRef(target);
  4195.       const options = {
  4196.         attributes: true,
  4197.         attributeFilter: Object.keys(this.flist),
  4198.         //attributeFilter: [ "status", "username" ],
  4199.         attributeOldValue: true
  4200.       }
  4201.       super.observe(target, options)
  4202.     }
  4203.     checker(target, attributeName){
  4204.       let nv = target.getAttribute(attributeName);
  4205.       if(this.res[attributeName]!==nv){
  4206.         this.res[attributeName] = nv
  4207.         let f = this.flist[attributeName];
  4208.         if(f) f(attributeName, nv);
  4209.  
  4210.       }
  4211.     }
  4212.     check(delay = 0){
  4213.       setTimeout(()=>{
  4214.         let target = kRef(this._target)
  4215.         for(const key of Object.keys(this.flist)){
  4216.           this.checker(target,key)
  4217.         }
  4218.         target = null;
  4219.       },delay)
  4220.     }
  4221.   } 
  4222.  
  4223.   function goYoutubeGeniusLyrics(){
  4224.  
  4225.     setTimeout(function $f(){
  4226.  
  4227.       if(!document.documentElement.hasAttribute('w-engagement-panel-genius-lyrics')) return setTimeout($f,100)
  4228.  
  4229.       document.documentElement.dispatchEvent(new CustomEvent('engagement-panel-genius-lyrics'))
  4230.  
  4231.  
  4232.     },100)
  4233.  
  4234.  
  4235.  
  4236.   }
  4237.  
  4238.  
  4239.   /*
  4240.  
  4241.   To be implement: timeline
  4242.  
  4243.   timeline.setTimeout
  4244.   timeline.clearTimeout
  4245.   timeline.setInterval
  4246.   timeline.clearInterval
  4247.  
  4248.   */
  4249.  
  4250.  
  4251.  
  4252.   //Object.keys($0).filter(key=>!(key in $0.constructor.prototype))
  4253.  
  4254.   //Object.getOwnPropertyNames(window).filter(k=>k.startsWith('HTML'))
  4255.   //Object.getOwnPropertyNames(window).filter(k=>k.startsWith('HTML')).filter(k=>$0 instanceof window[k])
  4256.  
  4257.  
  4258.   /* --------------------------- browser's bug in -webkit-box ----------------------------------------- */
  4259.  
  4260.   /*
  4261.    fix bug for comment section - version 1.8.7 
  4262.   This issue is the bug in browser's rendering
  4263.    I guess, this is due to the lines clamp with display:-webkit-box 
  4264.    use stupid coding to let it re-render when its content become visible
  4265.    
  4266.   /*
  4267.  
  4268.   ytd-expander[should-use-number-of-lines][collapsed] > #content.ytd-expander {
  4269.       color: var(--yt-spec-text-primary);
  4270.       display: -webkit-box;
  4271.       overflow: hidden;
  4272.       max-height: none;
  4273.       -webkit-box-orient: vertical;
  4274.       -webkit-line-clamp: var(--ytd-expander-max-lines, 4);
  4275.   }
  4276.  
  4277.   // v1.8.36 imposed a effective solution for fixing this bug
  4278.  
  4279.   */
  4280.  
  4281.   /* --------------------------- browser's bug in -webkit-box ----------------------------------------- */
  4282.  
  4283.  
  4284.   /**
  4285.    * 
  4286.  
  4287.  
  4288. f.initChildrenObserver=function(){var a=this;this.observer=new MutationObserver(function(){return a.childrenChanged()});
  4289. this.observer.observe(this.$.content,{subtree:!0,childList:!0,attributes:!0});this.childrenChanged()};
  4290. f.childrenChanged=function(){var a=this;this.alwaysToggleable?this.canToggle=this.alwaysToggleable:this.canToggleJobId||(this.canToggleJobId=window.requestAnimationFrame(function(){$h(function(){a.canToggleJobId=0;a.calculateCanCollapse()})}))};
  4291.  
  4292.  
  4293. f.onIronResize=function(){this.recomputeOnResize&&this.childrenChanged()};
  4294.  
  4295.  
  4296. onButtonClick_:function(){this.fire("yt-close-upsell-dialog")},
  4297. computeHasHeader_:function(a){return!!a.headerBackgroundImage}});var geb;var heb;var ieb;var jeb;var xI=function(){var a=L.apply(this,arguments)||this;a.alignAuto=!1;a.collapsed=!0;a.isToggled=!1;a.alwaysCollapsed=!1;a.canToggle=!0;a.collapsedHeight=80;a.disableToggle=!1;a.alwaysToggleable=!1;a.reversed=!1;a.shouldUseNumberOfLines=!1;a.recomputeOnResize=!1;a.canToggleJobId=0;return a};
  4298. n(xI,L);f=xI.prototype;f.alwaysToggleableChanged=function(){this.alwaysToggleable&&(this.canToggle=!0)};
  4299.  
  4300.  
  4301. f.calculateCanCollapse=function(){this.canToggle=this.shouldUseNumberOfLines?this.alwaysToggleable||this.$.content.offsetHeight<this.$.content.scrollHeight:this.alwaysToggleable||this.$.content.scrollHeight>this.collapsedHeight};
  4302. f.detachObserver=function(){this.observer&&this.observer.disconnect()};
  4303.  
  4304.    * 
  4305.    * 
  4306.    * 
  4307.    */
  4308.  
  4309.  
  4310.  
  4311.  
  4312. })();
  4313.  
  4314.  
  4315.  
  4316.  
  4317.  
  4318.  
  4319.  
  4320.  
  4321.  
  4322.  
  4323.  
  4324.  
  4325.  
  4326.  
  4327.  
  4328.  
  4329.  
  4330.  
  4331.  
  4332.  
  4333.  
  4334.  
  4335.  
  4336.  
  4337.  
  4338.  
  4339.  
  4340.  
  4341.  
  4342.  
  4343.  
  4344.  
  4345.  
  4346.  
  4347.  
  4348.  
  4349.  
  4350.  
  4351.  
  4352.  
  4353.  
  4354.  
  4355.     // https://github.com/cyfung1031/Tabview-Youtube/raw/main/js/content.js
  4356.  
  4357. }
  4358.  
  4359.  
  4360. ;!(function $$() {
  4361.     'use strict';
  4362.  
  4363.     if(document.documentElement==null) return window.requestAnimationFrame($$)
  4364.  
  4365.     const cssTxt = GM_getResourceText("contentCSS");
  4366.  
  4367.     function addStyle (styleText) {
  4368.       const styleNode = document.createElement('style');
  4369.       styleNode.type = 'text/css';
  4370.       styleNode.textContent = styleText;
  4371.       document.documentElement.appendChild(styleNode);
  4372.       return styleNode;
  4373.     }
  4374.  
  4375.     addStyle (cssTxt);
  4376.  
  4377.     main(window.$);
  4378.  
  4379.  
  4380.     // Your code here...
  4381. })();