☰

Tabview Youtube

Make comments and lists into tabs for YouTube Videos

当前为 2022-07-16 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     2.4.12
  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. // @match     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/facd1e8b883b9dbb7e1150bc3d8ee14165acdd93/css/style_content.css
  21. // @resource     injectionJS1 https://raw.githubusercontent.com/cyfung1031/Tabview-Youtube/5350c243f54ff10a47abea69b95ec5f767b138cb/js/injection_script_1.js
  22. // @resource     injectionFixAutoComplete https://raw.githubusercontent.com/cyfung1031/Tabview-Youtube/5350c243f54ff10a47abea69b95ec5f767b138cb/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($){
  30.     // MIT License
  31.     // https://github.com/cyfung1031/Tabview-Youtube/raw/main/js/content.js
  32.  
  33.  
  34.  
  35.  
  36.  
  37.  
  38.  
  39.  
  40.  
  41.  
  42.  
  43.  
  44.  
  45.  
  46.  
  47.  
  48.  
  49.  
  50.  
  51. -(function() {
  52.  
  53.   function inIframe() {
  54.     try {
  55.       return window.self !== window.top;
  56.     } catch (e) {
  57.       return true;
  58.     }
  59.   }
  60.  
  61.   if (inIframe()) return;
  62.  
  63.   if (!$) return;
  64.  
  65.   /**
  66.    * SVG resources:
  67.    * <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>
  68.    */
  69.  
  70.   const scriptVersionForExternal = '2022/05/07';
  71.  
  72.   const isMyScriptInChromeRuntime = () => typeof((((window || 0).chrome || 0).runtime || 0).getURL) == 'function'
  73.  
  74.   const svgComments = `<path d="M40.068 13.465l-34.138.07A5.94 5.94 0 0 0 0 19.465v21.141a5.94 5.94 0 0 0 5.93 5.929H12v10a1 
  75.   1 0 0 0 1.74.673l9.704-10.675 16.626-.068A5.94 5.94 0 0 0 46 40.536V19.395a5.94 5.94 0 0 0-5.932-5.93zM10 23.465h13a1 
  76.   1 0 1 1 0 2H10a1 1 0 1 1 0-2zm26 14H10a1 1 0 1 1 0-2h26a1 1 0 1 1 0 2zm0-6H10a1 1 0 1 1 0-2h26a1 1 0 1 1 0 
  77.   2zm18.072-28.93l-34.142-.07A5.94 5.94 0 0 0 14 8.395v3.124l26.064-.054c4.377 0 7.936 3.557 7.936 7.93v21.07.071 
  78.   2.087l3.26 3.586a1 1 0 0 0 1.74-.673v-10h1.07A5.94 5.94 0 0 0 60 29.607V8.465a5.94 5.94 0 0 0-5.928-5.93z"/>`.trim();
  79.  
  80.   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 
  81.   24h250c13.255 0 24-10.745 24-24V33zM91 39h43v34H91V39zM61 259H30v-34h31v34zm0-186H30V39h31v34zm73 
  82.   186H91v-34h43v34zm-11-82.292v-55.417c0-8.25 5.868-11.302 12.77-6.783l40.237 26.272c6.902 4.519 6.958 11.914.056 
  83.   16.434l-40.321 26.277c-6.902 4.52-12.742 1.467-12.742-6.783zM207 259h-43v-34h43v34zm0-186h-43V39h43v34zm61 
  84.   186h-31v-34h31v34zm0-186h-31V39h31v34z"/>`.trim();
  85.  
  86.   const svgInfo = `<path d="M11.812 0C5.289 0 0 5.289 0 11.812s5.289 11.813 11.812 11.813 11.813-5.29 11.813-11.813S18.335 
  87.   0 11.812 0zm2.459 18.307c-.608.24-1.092.422-1.455.548s-.783.189-1.262.189c-.736 
  88.   0-1.309-.18-1.717-.539s-.611-.814-.611-1.367c0-.215.015-.435.045-.659a8.23 8.23 0 0 1 
  89.   .147-.759l.761-2.688c.067-.258.125-.503.171-.731a3.24 3.24 0 0 0 
  90.   .068-.633c0-.342-.071-.582-.212-.717s-.412-.201-.813-.201c-.196 
  91.   0-.398.029-.605.09s-.383.12-.529.176l.201-.828c.498-.203.975-.377 1.43-.521s.885-.218 1.29-.218c.731 0 1.295.178 
  92.   1.692.53s.594.812.594 1.376c0 .117-.014.323-.041.617a4.13 4.13 0 0 1-.152.811l-.757 
  93.   2.68c-.062.215-.117.461-.167.736s-.073.485-.073.626c0 .356.079.599.239.728s.435.194.827.194a2.4 2.4 0 0 0 .626-.097 
  94.   3.56 3.56 0 0 0 .506-.17l-.203.827zm-.134-10.878c-.353.328-.778.492-1.275.492s-.924-.164-1.28-.492a1.57 1.57 0 
  95.   0 1-.533-1.193c0-.465.18-.865.533-1.196a1.81 1.81 0 0 1 1.28-.497 1.79 1.79 0 0 1 1.275.497c.353.331.53.731.53 
  96.   1.196s-.177.865-.53 1.193z"/>`.trim();
  97.  
  98.   const svgPlayList = `<path d="M0 64h256v42.667H0zm0 85.333h256V192H0zm0 85.334h170.667v42.667H0zm341.333 
  99.   0v-85.334h-42.666v85.334h-85.334v42.666h85.334v85.334h42.666v-85.334h85.334v-42.666z"/>`.trim();
  100.  
  101.   // --- Youtube Video Testing : 
  102.   // Square Video: https://www.youtube.com/watch?v=L0RXVnRbFg8 
  103.   // Square Video: https://www.youtube.com/watch?v=bK_rKhMIotU
  104.   // ---
  105.  
  106.  
  107.   const LAYOUT_TWO_COLUMNS = 1;
  108.   const LAYOUT_THEATER = 2;
  109.   const LAYOUT_FULLSCREEN = 4;
  110.   const LAYOUT_CHATROOM = 8;
  111.   const LAYOUT_CHATROOM_COLLASPED = 16;
  112.   const LAYOUT_TAB_EXPANDED = 32;
  113.   const LAYOUT_ENGAGEMENT_PANEL_EXPAND = 64;
  114.  
  115.   const mtoInterval1 = 40;
  116.   const mtoInterval2 = 150;
  117.  
  118.   let lastVideoURL = null; // for less attribute set only
  119.  
  120.  
  121.  
  122.   const querySelectorFromAnchor = HTMLElement.prototype.querySelector;  // nodeType==1
  123.   const querySelectorAllFromAnchor = HTMLElement.prototype.querySelectorAll; // nodeType==1
  124.   const closestDOM = HTMLElement.prototype.closest;
  125.  
  126.  
  127.  
  128.   function scriptInjector(script_id, url_chrome, response_id){
  129.  
  130.     let res={
  131.       script_id: script_id,
  132.       inject: function(){
  133.  
  134.         let res = this, script_id = this.script_id;
  135.  
  136.         if(!document.querySelector(`script#${script_id}`)){
  137.           if (res.runtime_url){
  138.             addScriptByURL(res.runtime_url).id = script_id;
  139.           } else {
  140.             addScript(`${res.injection_script}`).id = script_id;
  141.           }
  142.         }
  143.  
  144.       }
  145.     }
  146.     res.script_id = script_id;
  147.     
  148.     if (isMyScriptInChromeRuntime()){
  149.       res.runtime_url = window.chrome.runtime.getURL(url_chrome)
  150.     } else {
  151.       res.injection_script = GM_getResourceText(response_id);
  152.     }
  153.  
  154.     return res;
  155.  
  156.  
  157.  
  158.   }
  159.  
  160.   const script_inject_facp = scriptInjector(
  161.     'userscript-tabview-injection-facp',
  162.     'js/injectionScript_fixAutoComplete.js',
  163.     "injectionFixAutoComplete");
  164.     
  165.   const script_inject_js1 = scriptInjector(
  166.     'userscript-tabview-injection-1',
  167.     'js/injection_script_1.js',
  168.     "injectionJS1");
  169.     
  170.  
  171.  
  172.  
  173.   
  174.   /** @type {WeakRef | null} */ 
  175.   const WeakRef = window.WeakRef;
  176.   const mWeakRef = WeakRef ? (o => o ? new WeakRef(o) : null) : (o => o || null);
  177.   /** @type {(wr: Object | null) => Object | null} */
  178.   const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
  179.  
  180.  
  181.  
  182.   const nonCryptoRandStr_base = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
  183.   function nonCryptoRandStr(/** @type {number} */ n){
  184.     const result = new Array(n);
  185.     const baseStr = nonCryptoRandStr_base;
  186.     const bLen = baseStr.length;
  187.     for ( let i = 0; i < n; i++ ) {
  188.       let t = null
  189.       do {
  190.         t = baseStr.charAt(Math.floor(Math.random() * bLen));
  191.       }while(i===0 && 10-t>0)
  192.       result[i]=t;
  193.    }
  194.    return result.join('');
  195.   }
  196.  
  197. /**
  198.  * Class definition
  199.  * @property {string} propName - propriety description
  200.  * ...
  201.  */
  202.   class ObserverRegister{
  203.     
  204.     constructor(/** @type {()=>MutationObserver | IntersectionObserver} */ observerCreator){
  205.       let uid = null;
  206.       const uidStore = ObserverRegister.uidStore;
  207.       do{
  208.         uid = nonCryptoRandStr(5);
  209.       }while(uidStore[uid])
  210.       uidStore[uid] = true;
  211.       
  212.       /**
  213.        * uid is the unique string for each observer
  214.        * @type {string}
  215.        * @public
  216.        */
  217.       this.uid = uid;
  218.       
  219.       /**
  220.        * observerCreator is a function to create the observer
  221.        * @type {Function}
  222.        * @public
  223.        */
  224.       this.observerCreator = observerCreator
  225.       
  226.       /**
  227.        * observer is the actual observer object
  228.        * @type {MutationObserver | IntersectionObserver}
  229.        * @public
  230.        */
  231.       this.observer = null;
  232.     }
  233.     bindElement(/** @type {HTMLElement} */ elm, ...args){
  234.       if(elm.hasAttribute(`o3r-${this.uid}`))return false;
  235.       elm.setAttribute(`o3r-${this.uid}`,'')
  236.       if(this.observer===null){
  237.         this.observer=this.observerCreator();
  238.       }
  239.       this.observer.observe(elm, ...args)
  240.       return true
  241.     }
  242.     clear(/** @type {boolean} */ flag){
  243.       if(this.observer !== null){
  244.         //const uidStore = ObserverRegister.uidStore;
  245.         if(flag === true){
  246.           this.observer.takeRecords();
  247.           this.observer.disconnect();
  248.         }
  249.         this.observer = null;
  250.         for(const s of document.querySelectorAll(`[o3r-${this.uid}]`)) s.removeAttribute(`o3r-${this.uid}`)
  251.         //uidStore[this.uid]=false;
  252.         //this.uid = null;
  253.       }
  254.     }
  255.   }
  256.  
  257.   /**
  258.  * 'uidStore' is the static store of strings used.
  259.  * @static
  260.  */
  261.   ObserverRegister.uidStore = {}; //backward compatible with FireFox 55.
  262.  
  263.   const mtoMutation_watchFlexy = new ObserverRegister(()=>{
  264.     return new MutationObserver(FP.mtoNavF)
  265.   });
  266.   const sa_wflexy = mtoMutation_watchFlexy.uid;
  267.  
  268.   const mtoMutation_body = new ObserverRegister(()=>{
  269.     return new MutationObserver(FP.mtoBodyF)
  270.   });
  271.   const sa_body = mtoMutation_body.uid;
  272.  
  273.   const mtoFlexyAttr = new ObserverRegister(()=>{
  274.     return new MutationObserver(mtf_attrFlexy)
  275.   });
  276.   const sa_flexyAttr = mtoFlexyAttr.uid;
  277.  
  278.   const mtoVisibility_EngagementPanel = new ObserverRegister(()=>{
  279.     return new MutationObserver(FP.mtf_attrEngagementPanel)
  280.   });
  281.   const sa_epanel = mtoVisibility_EngagementPanel.uid;
  282.  
  283.   const mtoVisibility_Playlist = new ObserverRegister(()=>{
  284.     return new AttributeMutationObserver({
  285.       "hidden": FP.mtf_attrPlaylist
  286.     })
  287.   })
  288.   const sa_playlist = mtoVisibility_Playlist.uid;
  289.  
  290.   const mtoVisibility_Comments = new ObserverRegister(()=>{
  291.     return new AttributeMutationObserver({
  292.       "hidden": FP.mtf_attrComments
  293.     })
  294.   })
  295.   const sa_comments = mtoVisibility_Comments.uid;
  296.  
  297.  
  298.   const mtoVisibility_Chatroom = new ObserverRegister(()=>{
  299.     return new AttributeMutationObserver({
  300.       "collapsed": FP.mtf_attrChatroom
  301.     })
  302.   })
  303.   const sa_chatroom = mtoVisibility_Chatroom.uid;
  304.  
  305.  
  306.  
  307.  
  308.  
  309.   function tracer(key, cmp) {
  310.     if (cmp > 0) return tracer[key] === cmp;
  311.     return (tracer[key] = Date.now());
  312.   }
  313.  
  314.   function racer(key, f) {
  315.     let now = Date.now();
  316.     const kTime = `${key}$$1`
  317.     let t = racer[kTime] || 0;
  318.  
  319.     if (now < t) {
  320.       const kCount = `${key}$$2`;
  321.       racer[kCount] = (racer[kCount] || 0) + 1;
  322.       if (racer[kCount] === 1) {
  323.         let g = f;
  324.         requestAnimationFrame(() => {
  325.           racer[kCount] = 0;
  326.           g();
  327.           g = null;
  328.         })
  329.       }
  330.     } else {
  331.       racer[kTime] = now + 16;
  332.       f();
  333.     }
  334.   }
  335.  
  336.   class ScriptEF {
  337.     constructor() {
  338.       this._id = scriptEC;
  339.     }
  340.     isValid() {
  341.       return this._id === scriptEC;
  342.     }
  343.   }
  344.  
  345.   class Timeout {
  346.  
  347.     set(f, d, repeatCount) {
  348.       if (this.cid > 0) return;
  349.       let sEF = new ScriptEF();
  350.       if (repeatCount > 0) {
  351.  
  352.         let rc = repeatCount;
  353.         const g = () => {
  354.           this.cid = 0;
  355.           if (!sEF.isValid()) return;
  356.           let res = f();
  357.           if (--rc <= 0) return;
  358.           if (res === true) this.cid = timeline.setTimeout(g, d);
  359.         }
  360.         g();
  361.  
  362.       } else {
  363.  
  364.         const g = () => {
  365.           this.cid = 0;
  366.           if (!sEF.isValid()) return;
  367.           if (f() === true) this.cid = timeline.setTimeout(g, d);
  368.         }
  369.         this.cid = timeline.setTimeout(g, d);
  370.       }
  371.     }
  372.  
  373.     clear() {
  374.       if (this.cid > 0) timeline.clearTimeout(this.cid);
  375.     }
  376.  
  377.     isEmpty() {
  378.       return !this.cid
  379.     }
  380.  
  381.  
  382.   }
  383.  
  384.   class Mutex {
  385.  
  386.     constructor() {
  387.       this.p = Promise.resolve()
  388.     }
  389.  
  390.     lockWith(f) {
  391.  
  392.       this.p = this.p.then(() => {
  393.         return new Promise(f)
  394.       }).catch(console.warn)
  395.     }
  396.  
  397.   }
  398.  
  399.  
  400.  
  401.   function prettyElm(/** @type {Element} */ elm) {
  402.     if (!elm || !elm.nodeName) return null;
  403.     const eId = elm.id || null;
  404.     const eClsName = elm.className || null;
  405.     return [elm.nodeName.toLowerCase(), typeof eId == 'string' ? "#" + eId : '', typeof eClsName == 'string' ? '.' + eClsName.replace(/\s+/g, '.') : ''].join('').trim();
  406.   }
  407.  
  408.   function extractTextContent(/** @type {Node} */ elm) {
  409.     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, '')
  410.   }
  411.  
  412.   function addScript(/** @type {string} */ scriptText) {
  413.     const scriptNode = document.createElement('script');
  414.     scriptNode.type = 'text/javascript';
  415.     scriptNode.textContent = scriptText;
  416.     try {
  417.       document.documentElement.appendChild(scriptNode);
  418.     } catch (e) {
  419.       console.log('addScript Error', e)
  420.     }
  421.     return scriptNode;
  422.   }
  423.  
  424.   function addScriptByURL(/** @type {string} */ scriptURL) {
  425.     const scriptNode = document.createElement('script');
  426.     scriptNode.type = 'text/javascript';
  427.     scriptNode.src = scriptURL;
  428.     try {
  429.       document.documentElement.appendChild(scriptNode);
  430.     } catch (e) {
  431.       console.log('addScriptByURL Error', e)
  432.     }
  433.     return scriptNode;
  434.   }
  435.  
  436.   function addStyle(/** @type {string} */ styleText, /** @type {HTMLElement | Document} */ container) {
  437.     const styleNode = document.createElement('style');
  438.     //styleNode.type = 'text/css';
  439.     styleNode.textContent = styleText;
  440.     (container || document.documentElement).appendChild(styleNode);
  441.     return styleNode;
  442.   }
  443.  
  444.  
  445.   const stopIframePropagation = function(/** @type {Event} */ evt){
  446.     if(scriptEnable && evt && evt.target && evt.target.nodeName=='IFRAME'){
  447.       evt.stopImmediatePropagation();
  448.       evt.stopPropagation();
  449.     }
  450.   }
  451.   document.addEventListener('mouseover', stopIframePropagation, true)
  452.   document.addEventListener('mouseout', stopIframePropagation, true)
  453.   document.addEventListener('mousedown', stopIframePropagation, true)
  454.   document.addEventListener('mouseup', stopIframePropagation, true)
  455.   document.addEventListener('keydown', stopIframePropagation, true)
  456.   document.addEventListener('keyup', stopIframePropagation, true)
  457.   document.addEventListener('mouseenter', stopIframePropagation, true)
  458.   document.addEventListener('mouseleave', stopIframePropagation, true)
  459.  
  460.  
  461.  
  462.   function isDOMVisible(/** @type {HTMLElement} */ elem) {
  463.     // jQuery version : https://github.com/jquery/jquery/blob/a684e6ba836f7c553968d7d026ed7941e1a612d8/src/css/hiddenVisibleSelectors.js
  464.     return !!(elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length);
  465.   }
  466.  
  467.   function isNonEmptyString(s) {
  468.     return typeof s == 'string' && s.length > 0;
  469.   }
  470.  
  471.  
  472.   async function nativeCall(/** @type {EventTarget} */ dom, /** @type {any[]} */ detail) {
  473.     //console.log(1231)
  474.     dom.dispatchEvent(new CustomEvent("userscript-call-dom", { detail: detail }))
  475.     //console.log(1232)
  476.   }
  477.  
  478.   async function nativeFunc(/** @type {EventTarget} */ dom, /** @type {string} */ property, /** @type {any} */ args) {
  479.     dom.dispatchEvent(new CustomEvent("userscript-call-dom-func", { detail: { property, args } }))
  480.   }
  481.  
  482.   // async function nativeValue(dom, property, args) {
  483.   //   dom.dispatchEvent(new CustomEvent("userscript-call-dom-value", { detail: { property, args } }))
  484.   // }
  485.   // async function nativeFuncStacked(/** @type {string} */ selector, /** @type {string} */ property, /** @type {any} */ args){
  486.   //   document.dispatchEvent(new CustomEvent("userscript-call-dom-func-stacked", { detail: { selector, property, args } }))
  487.   // }
  488.   // async function nativeValueStacked(selector, property, args){
  489.   //   document.dispatchEvent(new CustomEvent("userscript-call-dom-value-stacked", { detail: { selector, property, args } }))
  490.   // }
  491.   // async function nativeConstStacked(selector, property, args){
  492.   //   document.dispatchEvent(new CustomEvent("userscript-call-dom-const-stacked", { detail: { selector, property, args } }))
  493.   // }
  494.  
  495.  
  496.   function akAttr(/** @type {HTMLElement} */ cssElm, /** @type {String} */ attrName, /** @type {boolean} */ isNegative, /** @type {string | any} */ flag) {
  497.     // isNegative => incomplete loading
  498.  
  499.     let u = parseInt(cssElm.getAttribute(attrName) || 0) || 0;
  500.     let ak = Math.abs(u);
  501.  
  502.     if (ak > 100 && isNegative && u < 0) {
  503.  
  504.     } else if (ak > 100 && !isNegative && u > 0) {
  505.  
  506.     } else {
  507.       if (ak <= 100) {
  508.         ak = 101;
  509.       } else {
  510.         ak++;
  511.         if (ak >= 800) ak = 101;
  512.       }
  513.       // 101, 102, ... 799, 101 
  514.     }
  515.  
  516.     cssElm.setAttribute(attrName, `${ isNegative ? -ak : ak }${ flag || '' }`)
  517.   }
  518.  
  519.  
  520.  
  521.   let timeout_resize_for_layout_change = new Timeout();
  522.  
  523.   function dispatchWindowResize(){
  524.     // for youtube to detect layout resize for adjusting Player tools
  525.     return window.dispatchEvent(new Event('resize'));
  526.   }
  527.  
  528.  
  529.  
  530.   function layoutStatusChanged(/** @type {number} */ old_layoutStatus, /** @type {number} */ new_layoutStatus) {
  531.  
  532.  
  533.     if (old_layoutStatus === new_layoutStatus) return;
  534.  
  535.     const cssElm = kRef(ytdFlexy);
  536.  
  537.     if (!cssElm) return;
  538.  
  539.  
  540.     const new_isExpandedChat = !(new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  541.     const new_isCollaspedChat = (new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  542.  
  543.     const new_isTwoColumns = !!(new_layoutStatus & LAYOUT_TWO_COLUMNS);
  544.     const new_isTheater = !!(new_layoutStatus & LAYOUT_THEATER);
  545.     const new_isTabExpanded = !!(new_layoutStatus & LAYOUT_TAB_EXPANDED);
  546.     const new_isFullScreen = !!(new_layoutStatus & LAYOUT_FULLSCREEN);
  547.     const new_isExpandEPanel = !!(new_layoutStatus & LAYOUT_ENGAGEMENT_PANEL_EXPAND);
  548.  
  549.     
  550.  
  551.  
  552.     function showTabOrChat() {
  553.  
  554.       layoutStatusMutex.lockWith(unlock => {
  555.  
  556.         if (lastShowTab == '#chatroom') {
  557.  
  558.           if (new_isTabExpanded) switchTabActivity(null)
  559.           if (!new_isExpandedChat) ytBtnExpandChat();
  560.  
  561.         } else if (lastShowTab && lastShowTab.indexOf('#engagement-panel-') == 0) {
  562.  
  563.           if (new_isTabExpanded) switchTabActivity(null)
  564.           if (!new_isExpandEPanel) ytBtnOpenEngagementPanel(lastShowTab);
  565.  
  566.         } else {
  567.  
  568.           if (new_isExpandedChat) ytBtnCollapseChat()
  569.           if (!new_isTabExpanded) {setToActiveTab();}
  570.  
  571.         }
  572.  
  573.         timeline.setTimeout(unlock, 40);
  574.  
  575.       })
  576.     }
  577.  
  578.     function hideTabAndChat() {
  579.  
  580.       layoutStatusMutex.lockWith(unlock => {
  581.  
  582.         if (new_isTabExpanded) switchTabActivity(null)
  583.         if (new_isExpandedChat) ytBtnCollapseChat()
  584.         if (new_isExpandEPanel) ytBtnCloseEngagementPanels();
  585.  
  586.  
  587.         timeline.setTimeout(unlock, 40);
  588.  
  589.       })
  590.  
  591.     }
  592.  
  593.  
  594.     if (new_isExpandedChat || new_isTabExpanded || new_isExpandEPanel) {
  595.       if (statusCollasped !== 1) statusCollasped = 1;
  596.     } else {
  597.       if (statusCollasped === 1) statusCollasped = 2;
  598.     }
  599.  
  600.     let changes = 0;
  601.  
  602.     if (old_layoutStatus !== null) changes = old_layoutStatus ^ new_layoutStatus;
  603.  
  604.     let chat_collasped_changed = !!(changes & LAYOUT_CHATROOM_COLLASPED)
  605.     let tab_expanded_changed = !!(changes & LAYOUT_TAB_EXPANDED)
  606.     let theater_mode_changed = !!(changes & LAYOUT_THEATER)
  607.     let column_mode_changed = !!(changes & LAYOUT_TWO_COLUMNS)
  608.     let fullscreen_mode_changed = !!(changes & LAYOUT_FULLSCREEN)
  609.     let epanel_expanded_changed = !!(changes & LAYOUT_ENGAGEMENT_PANEL_EXPAND)
  610.  
  611.     let tab_change = (tab_expanded_changed ? 1 : 0) | (chat_collasped_changed ? 2 : 0) | (epanel_expanded_changed ? 4 : 0);
  612.  
  613.     let isChatOrTabExpandTriggering = tab_change == 0 ? false : (
  614.       (tab_expanded_changed && new_isTabExpanded) ||
  615.       (chat_collasped_changed && new_isExpandedChat) ||
  616.       (epanel_expanded_changed && new_isExpandEPanel)
  617.     );
  618.  
  619.     let isChatOrTabCollaspeTriggering = tab_change == 0 ? false : (
  620.       (tab_expanded_changed && !new_isTabExpanded) ||
  621.       (chat_collasped_changed && new_isCollaspedChat) ||
  622.       (epanel_expanded_changed && !new_isExpandEPanel)
  623.     );
  624.  
  625.  
  626.  
  627.     let moreThanOneShown = (new_isTabExpanded + new_isExpandedChat + new_isExpandEPanel) > 1
  628.  
  629.     let requestVideoResize = false;
  630.  
  631.     if (fullscreen_mode_changed || new_isFullScreen) {
  632.  
  633.     } else if(new_isTwoColumns && !new_isTheater && !column_mode_changed && (tab_change==2 || tab_change==4) && !new_isTabExpanded && new_isExpandedChat && new_isExpandEPanel){
  634.  
  635.       if(epanel_expanded_changed){
  636.         layoutStatusMutex.lockWith(unlock => {
  637.           ytBtnCollapseChat();
  638.           setTimeout(unlock,13)
  639.         })
  640.       }else if(chat_collasped_changed){
  641.         layoutStatusMutex.lockWith(unlock => {
  642.           ytBtnCloseEngagementPanels();
  643.           setTimeout(unlock,13)
  644.         })
  645.  
  646.       }
  647.  
  648.     } else if (tab_change == 0 && column_mode_changed && new_isTwoColumns && !new_isTheater && statusCollasped === 1 && moreThanOneShown) {
  649.  
  650.       showTabOrChat();
  651.       requestVideoResize = true;
  652.  
  653.     } else if (tab_change == 2 && new_isExpandedChat && new_isTwoColumns && !new_isTheater && statusCollasped === 1 && new_isTabExpanded && !column_mode_changed) {
  654.  
  655.       switchTabActivity(null);
  656.       requestVideoResize = true;
  657.  
  658.     } else if (isChatOrTabExpandTriggering && new_isTwoColumns && new_isTheater && statusCollasped === 1 && !theater_mode_changed && !column_mode_changed) {
  659.  
  660.       ytBtnCancelTheater();
  661.       requestVideoResize = true;
  662.  
  663.     } else if (new_isTwoColumns && new_isTheater && statusCollasped === 1) {
  664.  
  665.       hideTabAndChat();
  666.       requestVideoResize = true;
  667.  
  668.     } else if (isChatOrTabCollaspeTriggering && new_isTwoColumns && !new_isTheater && statusCollasped === 2 && !column_mode_changed) {
  669.  
  670.       ytBtnSetTheater();
  671.       requestVideoResize = true;
  672.  
  673.     } else if (tab_change == 0 && (column_mode_changed || theater_mode_changed) && new_isTwoColumns && !new_isTheater && statusCollasped !== 1) {
  674.  
  675.       showTabOrChat();
  676.       requestVideoResize = true;
  677.  
  678.     } else if (!new_isFullScreen && new_isTwoColumns && !new_isTheater && !new_isTabExpanded &&
  679.       (new_isCollaspedChat || !new_isExpandedChat) &&
  680.       !new_isExpandEPanel
  681.     ) {
  682.       // bug fix for restoring from mini player
  683.  
  684.       layoutStatusMutex.lockWith(unlock => {
  685.         setToActiveTab();
  686.         timeline.setTimeout(unlock, 40);
  687.       })
  688.  
  689.       requestVideoResize = true;
  690.  
  691.     } else if (tab_expanded_changed) {
  692.  
  693.       requestVideoResize = true;
  694.  
  695.     }
  696.  
  697.  
  698.     if (column_mode_changed && !chat_collasped_changed && new_isExpandedChat) {
  699.  
  700.       runAfterExpandChat();
  701.  
  702.     }
  703.  
  704.  
  705.  
  706.     if (requestVideoResize) {
  707.  
  708.       timeout_resize_for_layout_change.clear();
  709.       timeout_resize_for_layout_change.set(() => {
  710.         dispatchWindowResize();
  711.       }, 92)
  712.  
  713.     } else if (timeout_resize_for_layout_change.isEmpty() && (Date.now()) - lastResizeAt > 600) {
  714.       timeout_resize_for_layout_change.set(() => {
  715.         if ((Date.now()) - lastResizeAt > 600) dispatchWindowResize();
  716.       }, 62)
  717.     }
  718.  
  719.  
  720.  
  721.  
  722.   }
  723.  
  724.  
  725.  
  726.   const wls = new Proxy({
  727.     /** @type {number | null} */
  728.     layoutStatus:undefined
  729.   }, {
  730.     get: function(target, prop) {
  731.       return target[prop];
  732.     },
  733.     set: function(target, prop, value) {
  734.       if(prop=='layoutStatus'){
  735.           
  736.         if (value === null) {
  737.           statusCollasped = 0;
  738.           target[prop] = value;
  739.           return;
  740.         }else if(target[prop]===value){
  741.           return;
  742.         }else{
  743.           if (!target.layoutStatus_pending) {
  744.             target.layoutStatus_pending = true;
  745.             const old_layoutStatus = target[prop];
  746.             target[prop] = value;
  747.             layoutStatusMutex.lockWith(unlock => {
  748.               target.layoutStatus_pending = false;
  749.               layoutStatusChanged(old_layoutStatus, target[prop]);
  750.               timeline.setTimeout(unlock, 40)
  751.             })
  752.             return;
  753.           }
  754.         }
  755.       }
  756.       target[prop] = value;
  757.     },
  758.     has: function(target, prop) {
  759.       return (prop in target);
  760.     }
  761.   });
  762.  
  763.  
  764.  
  765.  
  766.  
  767.  
  768.   const svgElm = (w, h, vw, vh, p) => `<svg width="${w}" height="${h}" viewBox="0 0 ${vw} ${vh}" preserveAspectRatio="xMidYMid meet">${p}</svg>`
  769.  
  770.   let settings = {
  771.     defaultTab: "#tab-videos"
  772.   };
  773.  
  774.  
  775.   let mtoInterval = mtoInterval1;
  776.  
  777.   function isVideoPlaying(video) {
  778.     return video.currentTime > 0 && !video.paused && !video.ended && video.readyState > video.HAVE_CURRENT_DATA;
  779.   }
  780.  
  781.   function wAttr(elm, attr, kv) {
  782.     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) }
  783.   }
  784.  
  785.   function hideTabBtn(tabBtn) {
  786.     let isActiveBefore = tabBtn.classList.contains('active');
  787.     tabBtn.classList.add("tab-btn-hidden");
  788.     if (isActiveBefore) {
  789.       setToActiveTab();
  790.     }
  791.   }
  792.  
  793.   function hasAttribute(obj, key) {
  794.     return obj && obj.hasAttribute(key);
  795.   }
  796.  
  797.   function isTheater() {
  798.     const cssElm = kRef(ytdFlexy);
  799.     return (cssElm && cssElm.hasAttribute('theater'))
  800.   }
  801.  
  802.   function isFullScreen() {
  803.     const cssElm = kRef(ytdFlexy);
  804.     return (cssElm && cssElm.hasAttribute('fullscreen'))
  805.   }
  806.  
  807.   function isChatExpand() {
  808.     const cssElm = kRef(ytdFlexy);
  809.     return cssElm && cssElm.hasAttribute('userscript-chatblock') && !cssElm.hasAttribute('userscript-chat-collapsed')
  810.   }
  811.  
  812.   function isWideScreenWithTwoColumns() {
  813.     const cssElm = kRef(ytdFlexy);
  814.     return (cssElm && cssElm.hasAttribute('is-two-columns_'))
  815.   }
  816.  
  817.   function isAnyActiveTab() {
  818.     return $('#right-tabs .tab-btn.active').length > 0
  819.   }
  820.  
  821.   function isEngagementPanelExpanded() { //note: not checking the visual elements
  822.     const cssElm = kRef(ytdFlexy);
  823.     return (cssElm && +cssElm.getAttribute('userscript-engagement-panel') > 0)
  824.   }
  825.  
  826.   function engagement_panels_() {
  827.  
  828.     let res = [];
  829.     let shownRes = [];
  830.  
  831.     let v = 0,
  832.       k = 1,
  833.       count = 0;
  834.       
  835.     for (const ePanel of document.querySelectorAll(
  836.       `ytd-watch-flexy ytd-engagement-panel-section-list-renderer[o3r-${sa_epanel}]`
  837.       )) {
  838.  
  839.       let visibility = ePanel.getAttribute('visibility') //ENGAGEMENT_PANEL_VISIBILITY_EXPANDED //ENGAGEMENT_PANEL_VISIBILITY_HIDDEN
  840.  
  841.       switch (visibility) {
  842.         case 'ENGAGEMENT_PANEL_VISIBILITY_EXPANDED':
  843.           v |= k;
  844.           count++;
  845.           shownRes.push(ePanel)
  846.           res.push({ ePanel, k, visible: true });
  847.           break;
  848.         case 'ENGAGEMENT_PANEL_VISIBILITY_HIDDEN':
  849.           res.push({ ePanel, k, visible: false });
  850.           break;
  851.         default:
  852.           res.push({ ePanel, k, visible: false });
  853.       }
  854.  
  855.       k = k << 1;
  856.  
  857.     }
  858.     return { list: res, value: v, count: count, shownRes };
  859.   }
  860.  
  861.  
  862.   function ytBtnOpenEngagementPanel(/** @type {number | string} */ panel_id) {
  863.  
  864.     if (typeof panel_id == 'string') {
  865.       panel_id = panel_id.replace('#engagement-panel-', '');
  866.       panel_id = parseInt(panel_id);
  867.     }
  868.     if (panel_id >= 0) {} else return false;
  869.  
  870.     let panels = engagement_panels_();
  871.  
  872.     for (const { ePanel, k, visible } of panels.list) {
  873.       if ((panel_id & k) === k) {
  874.         if (!visible) ePanel.setAttribute('visibility', "ENGAGEMENT_PANEL_VISIBILITY_EXPANDED");
  875.       } else {
  876.         if (visible) ytBtnCloseEngagementPanel(ePanel);
  877.       }
  878.     }
  879.  
  880.   }
  881.  
  882.   function ytBtnCloseEngagementPanel(/** @type {HTMLElement} */  s) {
  883.     //ePanel.setAttribute('visibility',"ENGAGEMENT_PANEL_VISIBILITY_HIDDEN");
  884.     let btn = querySelectorFromAnchor.call(s,'ytd-watch-flexy ytd-engagement-panel-title-header-renderer #header > #visibility-button > ytd-button-renderer');
  885.     if (btn) {
  886.       btn.click();
  887.     }
  888.   }
  889.  
  890.   function ytBtnCloseEngagementPanels() {
  891.     if (isEngagementPanelExpanded()) {
  892.       for (const s of document.querySelectorAll(
  893.         `ytd-watch-flexy ytd-engagement-panel-section-list-renderer[o3r-${sa_epanel}]`
  894.         )) {
  895.         if (s.getAttribute('visibility') == "ENGAGEMENT_PANEL_VISIBILITY_EXPANDED") ytBtnCloseEngagementPanel(s);
  896.       }
  897.     }
  898.   }
  899.  
  900.   function ytBtnSetTheater() {
  901.     if (!isTheater()) {
  902.       const sizeBtn = document.querySelector('ytd-watch-flexy #ytd-player button.ytp-size-button')
  903.       if (sizeBtn) sizeBtn.click();
  904.     }
  905.   }
  906.  
  907.   function ytBtnCancelTheater() {
  908.     if (isTheater()) {
  909.       const sizeBtn = document.querySelector('ytd-watch-flexy #ytd-player button.ytp-size-button')
  910.       if (sizeBtn) sizeBtn.click();
  911.     }
  912.   }
  913.  
  914.   function ytBtnExpandChat() {
  915.     let button = document.querySelector('ytd-live-chat-frame#chat[collapsed] > .ytd-live-chat-frame#show-hide-button')
  916.     if (button) querySelectorFromAnchor.call(button,'ytd-toggle-button-renderer').click();
  917.   }
  918.  
  919.   function ytBtnCollapseChat() {
  920.     let button = document.querySelector('ytd-live-chat-frame#chat:not([collapsed]) > .ytd-live-chat-frame#show-hide-button')
  921.     if (button) button.querySelector('ytd-toggle-button-renderer').click();
  922.   }
  923.  
  924. /*
  925.   function hackImgShadow(imgShadow) {
  926.     // add to #columns and add back after loaded
  927.     let img = imgShadow.querySelector('img')
  928.     if (!img) return;
  929.  
  930.     let p = imgShadow.parentNode
  931.     let z = $(imgShadow).clone()[0]; //to occupy the space
  932.     p.replaceChild(z, imgShadow)
  933.     $(imgShadow).prependTo('#columns'); // refer to css hack
  934.  
  935.     function onload(evt) {
  936.       if (evt) this.removeEventListener('load', onload, false)
  937.       p.replaceChild(imgShadow, z)
  938.       p = null;
  939.       z = null;
  940.       imgShadow = null;
  941.     }
  942.  
  943.     if (img.complete) onload();
  944.     else img.addEventListener('load', onload, false)
  945.   }
  946.   */
  947.  
  948.  
  949.   const Q = {}
  950.  
  951.  
  952.  
  953.   function chatFrameContentDocument() {
  954.     // non-null if iframe exist && contentDocument && readyState = complete
  955.     /** @type {HTMLIFrameElement | null} */ 
  956.     let iframe = document.querySelector('ytd-live-chat-frame iframe#chatframe');
  957.     if (!iframe) return null; //iframe must be there
  958.     /** @type {Document | null} */ 
  959.     let cDoc = null;
  960.     try {
  961.       cDoc = iframe.contentDocument;
  962.     } catch (e) {}
  963.     if (!cDoc) return null;
  964.     if (cDoc.readyState != 'complete') return null; //we must wait for its completion
  965.  
  966.     return cDoc;
  967.  
  968.   }
  969.  
  970.   function chatFrameElement(/** @type {string} */ cssSelector) {
  971.     let cDoc = chatFrameContentDocument();
  972.     if (!cDoc) return null;
  973.     /** @type {HTMLElement | null} */ 
  974.     let elm = null;
  975.     try {
  976.       elm = cDoc.querySelector(cssSelector)
  977.     } catch (e) {
  978.       console.log('iframe error', e)
  979.     }
  980.     return elm;
  981.   }
  982.  
  983.  
  984.  
  985.  
  986.   function fixTabs() {
  987.  
  988.  
  989.     if (!scriptEnable) return;
  990.  
  991.  
  992.     let queryElement = document.querySelector('*:not(#tab-videos) > #related:not([non-placeholder-videos]) > ytd-watch-next-secondary-results-renderer')
  993.  
  994.     let isRelocated = !!queryElement;
  995.  
  996.  
  997.  
  998.     if (isRelocated) {
  999.  
  1000.       let relocatedRelated = queryElement.parentNode; // NOT NULL
  1001.  
  1002.       let right_tabs = document.querySelector('#right-tabs');
  1003.       let tab_videos = querySelectorFromAnchor.call(right_tabs,"#tab-videos");
  1004.  
  1005.       if (!right_tabs || !tab_videos) return;
  1006.  
  1007.       for (const s of querySelectorAllFromAnchor.call(relocatedRelated,'#related')) {
  1008.         s.setAttribute('non-placeholder-videos', '')
  1009.       }
  1010.  
  1011.       let target_container = document.querySelector('ytd-watch-flexy:not([is-two-columns_]) #primary-inner, ytd-watch-flexy[is-two-columns_] #secondary-inner')
  1012.  
  1013.       if (target_container) target_container.append(right_tabs) // last-child
  1014.  
  1015.  
  1016.       let videos_related = relocatedRelated; // NOT NULL
  1017.       $('[placeholder-videos]').removeAttr('placeholder-videos');
  1018.       $('[placeholder-for-youtube-play-next-queue]').removeAttr('placeholder-for-youtube-play-next-queue');
  1019.  
  1020.       tab_videos.appendChild(videos_related);
  1021.       let videos_results_renderer = relocatedRelated.querySelector("ytd-watch-next-secondary-results-renderer");
  1022.       if (videos_results_renderer) videos_results_renderer.setAttribute('data-dom-changed-by-tabview-youtube', scriptVersionForExternal);
  1023.       videos_related.setAttribute('placeholder-for-youtube-play-next-queue', '')
  1024.       videos_related.setAttribute('placeholder-videos', '')
  1025.  
  1026.       $('[placeholder-videos]').on("scroll", makeBodyScrollByEvt);
  1027.  
  1028.  
  1029.  
  1030.  
  1031.     }
  1032.  
  1033.  
  1034.  
  1035.     /** @type {HTMLElement | null} */ 
  1036.     let chatroom = null;
  1037.     if (chatroom = document.querySelector('*:not([data-positioner="before|#chat"]) + ytd-live-chat-frame#chat, ytd-live-chat-frame#chat:first-child')) {
  1038.  
  1039.       let positioner = document.querySelector('tabview-youtube-positioner[data-positioner="before|#chat"]');
  1040.       if (positioner) positioner.remove();
  1041.  
  1042.  
  1043.       if (document.querySelector('.YouTubeLiveFilledUpView')) {
  1044.         // no relocation
  1045.       } else {
  1046.  
  1047.         $(chatroom).insertBefore('#right-tabs')
  1048.  
  1049.       }
  1050.  
  1051.  
  1052.       $(positioner ? positioner : document.createElement('tabview-youtube-positioner')).attr('data-positioner', 'before|#chat').insertBefore(chatroom)
  1053.  
  1054.  
  1055.  
  1056.     }
  1057.  
  1058.  
  1059.   }
  1060.  
  1061.   function handlerAutoCompleteExist() {
  1062.  
  1063.  
  1064.     /** @type {HTMLElement} */ 
  1065.     let autoComplete = this;
  1066.  
  1067.     autoComplete.removeEventListener('autocomplete-sc-exist', handlerAutoCompleteExist, false)
  1068.  
  1069.     let domId = autoComplete.getAttribute('data-autocomplete-input-id')
  1070.     let searchBox = autoComplete.ownerDocument.querySelector(`[data-autocomplete-results-id="${domId}"]`)
  1071.  
  1072.     if (!domId || !searchBox) return;
  1073.  
  1074.     let positioner = searchBox.nextSibling;
  1075.     if (positioner && positioner.nodeName.toLowerCase() == "autocomplete-positioner") {} else if (positioner && positioner.nodeName.toLowerCase() != "autocomplete-positioner") {
  1076.       $(positioner = document.createElement("autocomplete-positioner")).insertAfter(searchBox);
  1077.     } else {
  1078.       $(positioner = document.createElement("autocomplete-positioner")).prependTo(searchBox.parentNode);
  1079.     }
  1080.     $(autoComplete).prependTo(positioner);
  1081.  
  1082.     positioner.style.setProperty('--sb-margin-bottom', getComputedStyle(searchBox).marginBottom)
  1083.     positioner.style.setProperty('--height', searchBox.offsetHeight + 'px')
  1084.  
  1085.   }
  1086.  
  1087.   function mtf_fixAutoCompletePosition(/** @type {HTMLElement} */ elmAutoComplete) {
  1088.  
  1089.  
  1090.     elmAutoComplete.setAttribute('autocomplete-disable-updatesc', '')
  1091.     elmAutoComplete.addEventListener('autocomplete-sc-exist', handlerAutoCompleteExist, false)
  1092.  
  1093.     script_inject_facp.inject();
  1094.  
  1095.   }
  1096.  
  1097.   function mtf_AfterFixTabs() {
  1098.  
  1099.  
  1100.     /** @type {HTMLElement | null} */ 
  1101.     let ytdFlexyElm = kRef(ytdFlexy);
  1102.     if (!scriptEnable || !ytdFlexyElm) return;
  1103.  
  1104.     /** @type {HTMLElement | null} */
  1105.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1106.  
  1107.  
  1108.  
  1109.     const autocomplete = querySelectorFromAnchor.call(rootElement,'[placeholder-for-youtube-play-next-queue] input#suggestions-search + autocomplete-positioner > .autocomplete-suggestions[data-autocomplete-input-id]:not([position-fixed-by-tabview-youtube])')
  1110.  
  1111.     if (autocomplete) {
  1112.  
  1113.       const searchBox = document.querySelector('[placeholder-for-youtube-play-next-queue] input#suggestions-search')
  1114.  
  1115.  
  1116.       if (searchBox) {
  1117.  
  1118.  
  1119.         autocomplete.parentNode.setAttribute('position-fixed-by-tabview-youtube', '');
  1120.         autocomplete.setAttribute('position-fixed-by-tabview-youtube', '');
  1121.         autocomplete.setAttribute('userscript-scrollbar-render', '')
  1122.  
  1123.         if (!searchBox.hasAttribute('is-set-click-to-toggle')) {
  1124.           searchBox.setAttribute('is-set-click-to-toggle', '')
  1125.           searchBox.addEventListener('click', function() {
  1126.  
  1127.  
  1128.             setTimeout(() => {
  1129.               const autocomplete = document.querySelector(`.autocomplete-suggestions[data-autocomplete-input-id="${ this.getAttribute('data-autocomplete-results-id') }"]`)
  1130.  
  1131.               if (!autocomplete) return;
  1132.  
  1133.               const isNotEmpty = (autocomplete.textContent || '').length > 0 && (this.value || '').length > 0;
  1134.  
  1135.               if (isNotEmpty) {
  1136.  
  1137.                 let elmVisible = isDOMVisible(autocomplete)
  1138.  
  1139.                 if (elmVisible) $(autocomplete).hide();
  1140.                 else $(autocomplete).show();
  1141.  
  1142.               }
  1143.  
  1144.             }, 20);
  1145.  
  1146.           })
  1147.  
  1148.           let timeoutOnce_searchbox_keyup = new Timeout();
  1149.           searchBox.addEventListener('keyup', function() {
  1150.  
  1151.             timeoutOnce_searchbox_keyup.set(() => {
  1152.  
  1153.               const autocomplete = document.querySelector(`.autocomplete-suggestions[data-autocomplete-input-id="${ this.getAttribute('data-autocomplete-results-id') }"]`)
  1154.  
  1155.               if (!autocomplete) return;
  1156.  
  1157.  
  1158.               const isNotEmpty = (autocomplete.textContent || '').length > 0 && (this.value || '').length > 0
  1159.  
  1160.               if (isNotEmpty) {
  1161.  
  1162.                 let elmVisible = isDOMVisible(autocomplete)
  1163.  
  1164.                 if (!elmVisible) $(autocomplete).show();
  1165.  
  1166.               }
  1167.  
  1168.             }, 20);
  1169.  
  1170.           })
  1171.  
  1172.         }
  1173.  
  1174.  
  1175.  
  1176.       }
  1177.  
  1178.     }
  1179.  
  1180.  
  1181.  
  1182.  
  1183.     let currentLastVideo = querySelectorFromAnchor.call(rootElement,'[placeholder-videos] #items ytd-compact-video-renderer:last-of-type')
  1184.     let prevLastVideo = kRef(_cachedLastVideo);
  1185.  
  1186.     if (prevLastVideo !== currentLastVideo && currentLastVideo) {
  1187.       _cachedLastVideo = mWeakRef(currentLastVideo);
  1188.     }
  1189.  
  1190.     if (prevLastVideo !== currentLastVideo && currentLastVideo && prevLastVideo) {
  1191.  
  1192.       let isPrevRemoved = !prevLastVideo.parentNode
  1193.  
  1194.  
  1195.       function getVideoListHash() {
  1196.  
  1197.         let res = [...document.querySelectorAll('[placeholder-videos] #items ytd-compact-video-renderer')].map(renderer => {
  1198.           return renderer.querySelector('a[href*="watch"][href*="v="]').getAttribute('href')
  1199.  
  1200.         }).join('|')
  1201.         // /watch?v=XXXXX|/watch?v=XXXXXX|/watch?v=XXXXXX
  1202.  
  1203.         // alternative - DOM.data.videoId
  1204.         // let elms = document.querySelectorAll('[placeholder-videos] #items ytd-compact-video-renderer')
  1205.         // let res = [...elms].map(elm=>elm.data.videoId||'').join('|') ;
  1206.  
  1207.         if (res.indexOf('||') >= 0) {
  1208.           res = '';
  1209.         }
  1210.  
  1211.         return res ? res : null;
  1212.       }
  1213.  
  1214.       if (isPrevRemoved) {
  1215.  
  1216.         // this is the replacement of videos instead of addition
  1217.  
  1218.         const searchBox = document.querySelector('[placeholder-for-youtube-play-next-queue] input#suggestions-search')
  1219.  
  1220.         let currentPlayListHash = getVideoListHash() || null;
  1221.  
  1222.         if (!currentPlayListHash) {
  1223.  
  1224.         } else if (!videoListBeforeSearch && searchBox) {
  1225.  
  1226.           videoListBeforeSearch = currentPlayListHash;
  1227.           if (videoListBeforeSearch) {
  1228.             //console.log('fromSearch', videoListBeforeSearch)
  1229.  
  1230.             requestAnimationFrame(function() {
  1231.  
  1232.               let renderer = document.querySelector('[placeholder-videos] ytd-watch-next-secondary-results-renderer');
  1233.               if (searchBox && searchBox.parentNode) searchBox.blur();
  1234.  
  1235.               if (renderer) {
  1236.                 let scrollParent = renderer.parentNode;
  1237.                 if (scrollParent.scrollHeight > scrollParent.offsetHeight) {
  1238.                   let targetTop = renderer.offsetTop;
  1239.                   if (searchBox && searchBox.parentNode == scrollParent) targetTop -= searchBox.offsetHeight
  1240.                   scrollParent.scrollTop = targetTop - scrollParent.firstChild.offsetTop;
  1241.                 }
  1242.               }
  1243.  
  1244.             });
  1245.  
  1246.           }
  1247.  
  1248.         } else if (videoListBeforeSearch) {
  1249.  
  1250.           if (currentPlayListHash != videoListBeforeSearch) {
  1251.  
  1252.             videoListBeforeSearch = null;
  1253.             //console.log('fromSearch', videoListBeforeSearch)
  1254.  
  1255.  
  1256.           }
  1257.  
  1258.         }
  1259.  
  1260.  
  1261.       }
  1262.  
  1263.  
  1264.     }
  1265.  
  1266.  
  1267.  
  1268.  
  1269.   }
  1270.  
  1271.   function base_ChatExist() {
  1272.  
  1273.     let ytdFlexyElm = kRef(ytdFlexy);
  1274.     if (!scriptEnable || !ytdFlexyElm) return null;
  1275.  
  1276.     // no mutation triggering if the changes are inside the iframe 
  1277.  
  1278.     // 1) Detection of #continuations inside iframe
  1279.     // iframe ownerDocument is accessible due to same origin
  1280.     // if the chatroom is collasped, no determination of live chat or replay (as no #continuations and somehow a blank iframe doc)
  1281.  
  1282.     // 2) Detection of meta tag
  1283.     // This is fastest but not reliable. It is somehow a bug that the navigation might not update the meta tag content
  1284.  
  1285.     // 3) Detection of HTMLElement inside video player for live video
  1286.  
  1287.     // (1)+(3) = solution
  1288.  
  1289.     let attr_chatblock = null
  1290.     let attr_chatcollapsed = null;
  1291.  
  1292.     const elmChat = document.querySelector('ytd-live-chat-frame#chat')
  1293.     let elmCont = null;
  1294.     if (elmChat) {
  1295.       elmCont = chatFrameElement('yt-live-chat-renderer #continuations')
  1296.  
  1297.  
  1298.       let s = 0;
  1299.       if (elmCont) {
  1300.         //not found if it is collasped.
  1301.         s |= querySelectorFromAnchor.call(elmCont,'yt-timed-continuation') ? 1 : 0;
  1302.         s |= querySelectorFromAnchor.call(elmCont,'yt-live-chat-replay-continuation, yt-player-seek-continuation') ? 2 : 0;
  1303.         //s |= elmCont.querySelector('yt-live-chat-restricted-participation-renderer')?4:0;
  1304.         if (s == 1) {
  1305.           attr_chatblock = 'chat-live';
  1306.         }else if (s == 2) attr_chatblock = 'chat-playback';
  1307.  
  1308.         if (s == 1) $("span#tab3-txt-loader").text('');
  1309.  
  1310.       } else if (!ytdFlexyElm.hasAttribute('userscript-chatblock')) {
  1311.         // live chat frame but type not known
  1312.           
  1313.         attr_chatblock = '';
  1314.  
  1315.       }
  1316.       //keep unknown as original    
  1317.       
  1318.       
  1319.       let isCollapsed = !!elmChat.hasAttribute('collapsed');
  1320.       attr_chatcollapsed = isCollapsed;
  1321.  
  1322.     } else {
  1323.       attr_chatblock = false;
  1324.       attr_chatcollapsed = false;
  1325.  
  1326.     }
  1327.  
  1328.     return { attr_chatblock, attr_chatcollapsed }
  1329.  
  1330.   }
  1331.  
  1332.  
  1333.   function mtf_ChatExist() {
  1334.  
  1335.     let ytdFlexyElm = kRef(ytdFlexy);
  1336.     if (!scriptEnable || !ytdFlexyElm) return;
  1337.  
  1338.     if (deferredVarYTDHidden) return;
  1339.  
  1340.     const elmChat = document.querySelector('ytd-live-chat-frame#chat')
  1341.     let elmCont = null;
  1342.     if (elmChat) {
  1343.       elmCont = chatFrameElement('yt-live-chat-renderer #continuations')
  1344.     }
  1345.  
  1346.     const chatBlockR = (elmChat ? 1 : 0) + (elmCont ? 2 : 0)
  1347.     if (Q.mtf_chatBlockQ !== chatBlockR) {
  1348.       Q.mtf_chatBlockQ = chatBlockR
  1349.       let rChatExist = base_ChatExist();
  1350.       //console.log(2446, rChatExist)
  1351.       if (rChatExist) {
  1352.         let { attr_chatblock, attr_chatcollapsed } = rChatExist;
  1353.         wAttr(ytdFlexyElm, 'userscript-chatblock', attr_chatblock)
  1354.         wAttr(ytdFlexyElm, 'userscript-chat-collapsed', attr_chatcollapsed)
  1355.         
  1356.         if(attr_chatblock=='chat-live') _disableComments();
  1357.       }
  1358.     }
  1359.  
  1360.   }
  1361.  
  1362.  
  1363.  
  1364.  
  1365.   let lastScrollAt1 = 0;
  1366.  
  1367.   function makeBodyScrollByEvt() {
  1368.     let ct = Date.now();
  1369.     if (ct - lastScrollAt1 < 6) return; // avoid duplicate calling
  1370.     lastScrollAt1 = ct;
  1371.     window.dispatchEvent(new Event("scroll")); // dispatch Scroll Event to Window for content display
  1372.   }
  1373.  
  1374.   let lastScrollAt2 = 0;
  1375.  
  1376.   function makeBodyScroll() {
  1377.     let ct = Date.now();
  1378.     if (ct - lastScrollAt2 < 30) return; // avoid over triggering
  1379.     lastScrollAt2 = ct;
  1380.     requestAnimationFrame(() => {
  1381.       window.dispatchEvent(new Event("scroll")); // ask youtube to display content
  1382.     })
  1383.   }
  1384.  
  1385.   //let requestingComments = null
  1386.   //let scrollForComments_lastStart = 0;
  1387.    /*
  1388.   function scrollForComments_TF() {
  1389.  
  1390.     let comments = requestingComments;
  1391.     if (!comments) return;
  1392.     if (comments.hasAttribute('hidden')) {
  1393.       window.dispatchEvent(new Event("scroll"));
  1394.     } else requestingComments = null;
  1395.  
  1396.   }
  1397.   function scrollForComments() {
  1398.     scrollForComments_TF();
  1399.     if (!requestingComments) return;
  1400.     requestAnimationFrame(scrollForComments_TF);
  1401.     let ct = Date.now();
  1402.     if (ct - scrollForComments_lastStart < 60) return;
  1403.     scrollForComments_lastStart = ct;
  1404.     timeline.setTimeout(scrollForComments_TF, 80);
  1405.     timeline.setTimeout(scrollForComments_TF, 240);
  1406.     timeline.setTimeout(scrollForComments_TF, 870);
  1407.   
  1408.   }
  1409.   */
  1410.  
  1411.  
  1412.  
  1413.   const mtoCs = { mtoNav: null, mtoBody: null };
  1414.  
  1415.  
  1416.   const mtoVs = {}
  1417.  
  1418.   const mutation_target_id_list = ['ytp-caption-window-container', 'items', 'button', 'movie_player', 'player-ads', 'hover-overlays', 'replies'];
  1419.   const mutation_target_class_list = ['ytp-panel-menu', 'ytp-endscreen-content'];
  1420.  
  1421.   function isMtoOverallSkip(dTarget) {
  1422.  
  1423.     if (!dTarget || dTarget.nodeType !== 1) return true;
  1424.  
  1425.     if (mutation_target_id_list.includes(dTarget.id)) return true;
  1426.  
  1427.     for (const c of dTarget.classList) {
  1428.       if (mutation_target_class_list.includes(c)) return true;
  1429.     }
  1430.  
  1431.     return false;
  1432.   }
  1433.  
  1434.  
  1435.   const mutation_div_id_ignorelist = [
  1436.         'metadata-line',
  1437.         'ytp-caption-window-container',
  1438.         'top-level-buttons-computed',
  1439.         'microformat',
  1440.         'visibility-button',
  1441.         'info-strings',
  1442.         'action-menu',
  1443.         'reply-button-end'
  1444.     ];
  1445.  
  1446.   const mutation_div_class_ignorelist = [
  1447.         'badge', 'tp-yt-paper-tooltip', 'ytp-autonav-endscreen-upnext-header',
  1448.         'ytp-bound-time-left', 'ytp-bound-time-right', 'ytp-share-icon',
  1449.         'ytp-tooltip-title', 'annotation', 'ytp-copylink-icon', 'ytd-thumbnail',
  1450.         'paper-ripple',
  1451.         //caption
  1452.         'captions-text', 'caption-visual-line', 'ytp-caption-segment', 'ytp-caption-window-container',
  1453.         //menu
  1454.         'ytp-playlist-menu-button-text',
  1455.  
  1456.         'ytp-bezel-icon', 'ytp-bezel-text',
  1457.         'dropdown-content',
  1458.         'tp-yt-paper-menu-button', 'tp-yt-iron-dropdown',
  1459.  
  1460.         'ytd-metadata-row-renderer', // #content.ytd-metadata-row-renderer inside each of ytd-metadata-row-renderer (ytd-expander)
  1461.         '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
  1462.  
  1463.         'autocomplete-suggestions' // autocomplete-suggestions
  1464.     ];
  1465.  
  1466.   const mutation_target_tag_ignorelist = [
  1467.         'ytd-channel-name', 'tp-yt-iron-dropdown', 'tp-yt-paper-tooltip',
  1468.         'tp-yt-paper-listbox', 'yt-img-shadow', 'ytd-thumbnail', 'ytd-video-meta-block',
  1469.  
  1470.         'yt-icon-button', 'tp-yt-paper-button', 'yt-formatted-string', 'yt-icon', 'button', 'paper-ripple',
  1471.  
  1472.         'ytd-player-microformat-renderer',
  1473.         'ytd-engagement-panel-section-list-renderer', 'ytd-engagement-panel-title-header-renderer',
  1474.         'ytd-comment-renderer', 'ytd-menu-renderer', 'ytd-badge-supported-renderer',
  1475.         'ytd-subscribe-button-renderer', 'ytd-subscription-notification-toggle-button-renderer',
  1476.         'ytd-button-renderer', 'ytd-toggle-button-renderer',
  1477.         'yt-pdg-comment-chip-renderer', 'ytd-comment-action-buttons-renderer', 'ytd-comment-thread-renderer',
  1478.         'ytd-compact-radio-renderer', 'ytd-compact-video-renderer',
  1479.         'ytd-video-owner-renderer',
  1480.         'ytd-metadata-row-renderer', //ytd-metadata-row-renderer is part of the #collapsible inside ytd-expander
  1481.  
  1482.         'ytd-moving-thumbnail-renderer',
  1483.         'ytd-thumbnail-overlay-toggle-button-renderer',
  1484.         'ytd-thumbnail-overlay-bottom-panel-renderer', 'ytd-thumbnail-overlay-equalizer',
  1485.         'ytd-thumbnail-overlay-now-playing-renderer', 'ytd-thumbnail-overlay-resume-playback-renderer',
  1486.         'ytd-thumbnail-overlay-side-panel-renderer', 'ytd-thumbnail-overlay-time-status-renderer',
  1487.         'ytd-thumbnail-overlay-hover-text-renderer',
  1488.  
  1489.         'yt-interaction',
  1490.         'tp-yt-paper-spinner-lite', 'tp-yt-paper-spinner',
  1491.  
  1492.         'h1', 'h2', 'h3', 'h4', 'h5', 'span', 'a',
  1493.  
  1494.         'meta', 'br', 'script', 'style', 'link', 'dom-module', 'template'
  1495.     ];
  1496.  
  1497.   function isMtoTargetSkip(mutation) {
  1498.     //skip not important mutation tartget
  1499.  
  1500.     if (!mutation) return true;
  1501.     let { type, target } = mutation
  1502.  
  1503.     if (!target || target.nodeType !== 1 || type != 'childList') return true;
  1504.  
  1505.     let tagName = target.nodeName.toLowerCase();
  1506.  
  1507.     if (mutation_target_tag_ignorelist.includes(tagName)) return true;
  1508.  
  1509.     switch (tagName) {
  1510.  
  1511.  
  1512.       case 'ytd-expander':
  1513.         if (target.id == 'expander' && Q.comments_section_loaded == 1 && target.classList.contains('ytd-comment-renderer')) return true; // load comments
  1514.         return false;
  1515.  
  1516.       case 'div':
  1517.  
  1518.         if (target.id == 'contents') {
  1519.           return false;
  1520.         }
  1521.         if (mutation_div_id_ignorelist.includes(target.id)) return true;
  1522.  
  1523.         for (const c of target.classList) {
  1524.           if (mutation_div_class_ignorelist.includes(c)) return true;
  1525.         }
  1526.  
  1527.         return false;
  1528.  
  1529.     }
  1530.  
  1531.     return false;
  1532.  
  1533.   }
  1534.  
  1535.  
  1536.   function mtf_forceCheckLiveVideo() {
  1537.     // once per $$player-playback-timestamp$$ {#ytd-player .ytp-time-display} &&  $$chat-frame$$ {ytd-live-chat-frame#chat} detection
  1538.     // reset after popstatechange / videochange
  1539.  
  1540.     if(mtf_forceCheckLiveVideo_disable) return ;
  1541.  
  1542.     let ytdFlexyElm = kRef(ytdFlexy);
  1543.     if (!scriptEnable || !ytdFlexyElm) return ;
  1544.  
  1545.     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')
  1546.     if (!playerLabel) return ;
  1547.     mtf_forceCheckLiveVideo_disable = 1;
  1548.     timeline.setTimeout(FP.fireOnce_forceCheckLiveVideo_tf, 170)
  1549.     return ;
  1550.   }
  1551.  
  1552.   // continuous check for element relocation
  1553.   function mtf_append_comments() {
  1554.     
  1555.     /** @type {HTMLElement | null} */
  1556.     let ytdFlexyElm = kRef(ytdFlexy);
  1557.     if (!scriptEnable || !ytdFlexyElm) return;
  1558.  
  1559.     /** @type {HTMLElement | null} */
  1560.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1561.  
  1562.     let comments = querySelectorFromAnchor.call(rootElement,'#primary ytd-watch-metadata ~ ytd-comments#comments');
  1563.     if (comments) $(comments).appendTo('#tab-comments').attr('data-dom-changed-by-tabview-youtube', scriptVersionForExternal)
  1564.   }
  1565.  
  1566.   // continuous check for element relocation
  1567.   function mtf_liveChatBtnF() {
  1568.     
  1569.     /** @type {HTMLElement | null} */
  1570.     let ytdFlexyElm = kRef(ytdFlexy);
  1571.     if (!scriptEnable || !ytdFlexyElm) return;
  1572.  
  1573.     /** @type {HTMLElement | null} */
  1574.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1575.  
  1576.     let button = querySelectorFromAnchor.call(rootElement,'ytd-live-chat-frame#chat > .ytd-live-chat-frame#show-hide-button:nth-child(n+2)');
  1577.     if (button) button.parentNode.insertBefore(button, button.parentNode.firstChild)
  1578.   }
  1579.  
  1580.  
  1581.  
  1582.   // continuous check for element relocation
  1583.   // fired at begining & window resize, etc
  1584.   function mtf_append_playlist() {
  1585.  
  1586.     /** @type {HTMLElement | null} */
  1587.     let ytdFlexyElm = kRef(ytdFlexy);
  1588.     if (!scriptEnable || !ytdFlexyElm) return;
  1589.  
  1590.     /** @type {HTMLElement | null} */
  1591.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1592.  
  1593.     let ple1 = querySelectorFromAnchor.call(rootElement,"*:not(#ytd-userscript-playlist) > ytd-playlist-panel-renderer#playlist");
  1594.     if (ple1) {
  1595.       let ct = Date.now();
  1596.       let truePlaylist = null;
  1597.       let truePlaylist_items = document.querySelector('ytd-playlist-panel-renderer#playlist #items:not(:empty)');
  1598.       if (truePlaylist_items) {
  1599.  
  1600.         let pElm = truePlaylist_items.parentNode;
  1601.         while (pElm && pElm.nodeType === 1) {
  1602.           if (pElm.id == 'playlist') {
  1603.             pElm.setAttribute('tabview-true-playlist', ct)
  1604.             truePlaylist = pElm;
  1605.             break;
  1606.           }
  1607.           pElm = pElm.parentNode;
  1608.         }
  1609.  
  1610.       }
  1611.  
  1612.       if (!truePlaylist) truePlaylist = ple1; // NOT NULL
  1613.  
  1614.       for (const s of document.querySelectorAll(`*:not(#ytd-userscript-playlist) > ytd-playlist-panel-renderer#playlist:not([tabview-true-playlist="${ct}"])`))
  1615.         s.parentNode.removeChild(s);
  1616.  
  1617.       let $wrapper = getWrapper('ytd-userscript-playlist')
  1618.       $wrapper.append(truePlaylist).appendTo(document.querySelector("#tab-list"));
  1619.       truePlaylist.setAttribute('data-dom-changed-by-tabview-youtube', scriptVersionForExternal)
  1620.       setDisplayedPlaylist(); // relocation after re-layout
  1621.  
  1622.       requestAnimationFrame(() => {
  1623.         let ytdFlexyElm = kRef(ytdFlexy);
  1624.         if (!scriptEnable || !ytdFlexyElm) return;
  1625.         if (!switchTabActivity_lastTab && (ytdFlexyElm.getAttribute('tabview-selection') + '').indexOf('#tab-') === 0 && /https\:\/\/www\.youtube\.com\/watch.*[\?\&]list=[\w\-\_]+/.test(location.href)) {
  1626.           if (setToActiveTab('#tab-list')) switchTabActivity_lastTab = '#tab-list';
  1627.         }
  1628.       })
  1629.  
  1630.     }
  1631.   }
  1632.  
  1633.  
  1634.   // content fix - info & playlist
  1635.   // fired at begining, and keep for in case any change
  1636.   function mtf_fix_details() {
  1637.  
  1638.     if (!scriptEnable) return;
  1639.  
  1640.     let date_now = Date.now()
  1641.  
  1642.     if(no_fix_contents_until<date_now){
  1643.  
  1644.       let contentToggleBtn = document.querySelector('ytd-watch-flexy #tab-info ytd-expander tp-yt-paper-button#less.ytd-expander:not([hidden]), #tab-info ytd-expander tp-yt-paper-button#more.ytd-expander:not([hidden])')
  1645.  
  1646.       if(contentToggleBtn){
  1647.   
  1648.         no_fix_contents_until = date_now + 39;
  1649.         timeline.setTimeout(function() {
  1650.           const domElement = contentToggleBtn;
  1651.           contentToggleBtn = null;
  1652.           if(!domElement.parentElement) return;
  1653.           const expander = closestDOM.call(domElement, 'ytd-watch-flexy #tab-info ytd-expander')
  1654.   
  1655.           if(!expander || expander.nodeType!==1) return;
  1656.           if(expander.style.getPropertyValue('--ytd-expander-collapsed-height')){
  1657.             expander.style.setProperty('--ytd-expander-collapsed-height','')
  1658.           }
  1659.           nativeCall(expander, [
  1660.             {'property':'canToggleJobId','value':1}, // false disable calculateCanCollapse in childrenChanged
  1661.             {'property':'alwaysToggleable','value':false}, // this is checked in childrenChanged
  1662.             {'property':'recomputeOnResize','value':false}, // no need to check toggleable
  1663.             {'property':'isToggled','value':true}, // show full content
  1664.             {'property':'canToggle','value':false}, // hide show more or less btn
  1665.             {'property':'collapsedHeight','value':999999} // disable collapsed height check
  1666.           ])
  1667.   
  1668.         }, 40);
  1669.       }
  1670.  
  1671.     }
  1672.  
  1673.  
  1674.     if(no_fix_playlist_until<date_now){
  1675.  
  1676.  
  1677.       // just in case the playlist is collapsed
  1678.       let playlist = document.querySelector('#tab-list ytd-playlist-panel-renderer#playlist')
  1679.       if(playlist.matches('[collapsed], [collapsible]')) {
  1680.         no_fix_playlist_until=  date_now + 39;
  1681.         timeline.setTimeout(function() {
  1682.           const domElement = playlist;
  1683.           playlist = null;
  1684.           if(!domElement.parentElement || domElement.nodeType!==1) return;
  1685.  
  1686.           if (domElement.hasAttribute('collapsed')) wAttr(domElement, 'collapsed', false);
  1687.           if (domElement.hasAttribute('collapsible')) wAttr(domElement, 'collapsible', false);
  1688.         }, 40)
  1689.       }
  1690.  
  1691.  
  1692.     }
  1693.  
  1694.  
  1695.   }
  1696.  
  1697.  
  1698.  
  1699.   function isNullComments() {
  1700.  
  1701.     let comments = document.querySelector('ytd-comments#comments')
  1702.     if (!comments || comments.hasAttribute('hidden')) return true;
  1703.  
  1704.   }
  1705.  
  1706.   function _innerCommentsLoader( /** @type {HTMLElement} */ rootElement) {
  1707.  
  1708.     /** @type {HTMLElement | null} */
  1709.     let ytdFlexyElm = kRef(ytdFlexy);
  1710.     if (!scriptEnable || !ytdFlexyElm) return;
  1711.     
  1712.     if (deferredVarYTDHidden) return;
  1713.  
  1714.  
  1715.     let messageElm, messageStr, commentRenderer;
  1716.     let diffCSS = `[tabview-cache-time="${sect_hTime}"]`
  1717.  
  1718.     if (commentRenderer = querySelectorFromAnchor.call(rootElement,`ytd-comments#comments #count.ytd-comments-header-renderer:not(${diffCSS})`)) {
  1719.  
  1720.       scheduledCommentRefresh=false;
  1721.       let eTime = Date.now();
  1722.  
  1723.       sect_holder = mWeakRef(commentRenderer);
  1724.       sect_hText = commentRenderer.textContent;
  1725.       sect_hTime = eTime;
  1726.       commentRenderer.setAttribute('tabview-cache-time', eTime);
  1727.  
  1728.       return {
  1729.         status: 1,
  1730.         f: () => {
  1731.  
  1732.           let span = document.querySelector("span#tab3-txt-loader")
  1733.           let r = '0';
  1734.           let txt = commentRenderer.textContent
  1735.           if (typeof txt == 'string') {
  1736.             let m = txt.match(/[\d\,\s]+/)
  1737.             if (m) {
  1738.               r = m[0].trim()
  1739.  
  1740.  
  1741.             }
  1742.           }
  1743.           
  1744.           if (span){
  1745.  
  1746.             let tab_btn = closestDOM.call(span,'.tab-btn[userscript-tab-content="#tab-comments"]')
  1747.             if(tab_btn)tab_btn.setAttribute('loaded-comment','normal')
  1748.             span.textContent = r;
  1749.           } 
  1750.           //console.log(754)
  1751.           mtoInterval = mtoInterval2;
  1752.           scheduledCommentRefresh=false;
  1753.           setCommentSection(1);
  1754.           comments_section_loaded_elm = mWeakRef(document.querySelector('ytd-comments#comments div#contents'))
  1755.         }
  1756.       }
  1757.  
  1758.     } else if ((messageElm = querySelectorFromAnchor.call(rootElement,`ytd-item-section-renderer#sections #header ~ #contents > ytd-message-renderer:not(${diffCSS})`)) && (messageStr = (messageElm.textContent || '').trim())) { //ytd-message-renderer
  1759.       // it is possible to get the message before the header generation.
  1760.       // sample link - https://www.youtube.com/watch?v=PVUZ8Nvr1ic
  1761.       // sample link - https://www.youtube.com/watch?v=yz8AiQc1Bk8
  1762.  
  1763.       scheduledCommentRefresh=false;
  1764.       let eTime = Date.now();
  1765.  
  1766.       sect_holder = mWeakRef(messageElm);
  1767.       sect_hText = messageElm.textContent;
  1768.       sect_hTime = eTime;
  1769.       messageElm.setAttribute('tabview-cache-time', eTime);
  1770.  
  1771.       return {
  1772.         status: 2,
  1773.         f: () => {
  1774.           timeline.setTimeout(function() {
  1775.             let span = document.querySelector("span#tab3-txt-loader")
  1776.             const mainMsg = querySelectorFromAnchor.call(messageElm,'#message, #submessage')
  1777.             if (mainMsg && mainMsg.textContent) {
  1778.               for (const msg of querySelectorAllFromAnchor.call(mainMsg,'*:not(:empty)')) {
  1779.                 if (msg.childElementCount === 0 && msg.textContent) {
  1780.                   messageStr = msg.textContent.trim()
  1781.                   break
  1782.                 }
  1783.               }
  1784.             }
  1785.             if (span){
  1786.               let tab_btn = closestDOM.call(span,'.tab-btn[userscript-tab-content="#tab-comments"]')
  1787.               if(tab_btn)tab_btn.setAttribute('loaded-comment','message')
  1788.               span.textContent ='\u200B';
  1789.             } 
  1790.             mtoInterval = mtoInterval2;
  1791.             scheduledCommentRefresh=false;
  1792.             setCommentSection(1);
  1793.             comments_section_loaded_elm = mWeakRef(document.querySelector('ytd-comments#comments div#contents'))
  1794.           }, 40);
  1795.         }
  1796.       }
  1797.  
  1798.     }
  1799.  
  1800.   }
  1801.  
  1802.   const atChange = async ()=>{
  1803.  
  1804.     // call when video change / popstate change / switch back from mini-view
  1805.  
  1806.     let ytdFlexyElm = kRef(ytdFlexy);
  1807.     if(!ytdFlexyElm) return;
  1808.  
  1809.     mtf_forceCheckLiveVideo_disable = 0; 
  1810.     mtf_forceCheckLiveVideo();
  1811.  
  1812.     if(Q.comments_section_loaded===0){
  1813.  
  1814.       const tabBtn = document.querySelector('[userscript-tab-content="#tab-comments"].tab-btn-hidden')
  1815.       if(tabBtn) {
  1816.         tabBtn.classList.remove("tab-btn-hidden") //if contains
  1817.       }
  1818.  
  1819.     }
  1820.   }
  1821.  
  1822.  
  1823.  
  1824.   function hookSection(){
  1825.  
  1826.  
  1827.     //console.log(3300)
  1828.  
  1829.     let ytdFlexyElm = kRef(ytdFlexy);
  1830.     if (!scriptEnable || !ytdFlexyElm) return ;
  1831.  
  1832.     const comments = querySelectorFromAnchor.call(ytdFlexyElm,'ytd-comments#comments')
  1833.     if (!comments) return ;
  1834.  
  1835.     if(deferredVarYTDHidden) return;
  1836.  
  1837.     //console.log(3310)
  1838.  
  1839.     //new MutationObserver(function(){console.log(comments.querySelectorAll('*').length)}).observe(comments,{ attributes: true, childList: true, subtree: true })
  1840.     
  1841.  
  1842.     function foundSection(sections){
  1843.  
  1844.       
  1845.       //console.log(3320)
  1846.  
  1847.       function ulfx() {
  1848.         //console.log(1220)
  1849.  
  1850.  
  1851.         const rootElement = comments.parentNode
  1852.  
  1853.  
  1854.         if (pendingOne && querySelectorAllFromAnchor.call(comments,'[tabview-cache-time]').length > 1) return;
  1855.         pendingOne = false;
  1856.         if(!rootElement) return; //prevent unknown condition
  1857.         
  1858.  
  1859.  
  1860.         let innerCommentsLoaderRet = _innerCommentsLoader(rootElement);
  1861.  
  1862.         //console.log(1222,_innerCommentsLoader)
  1863.  
  1864.         if (!innerCommentsLoaderRet) {
  1865.  
  1866.  
  1867.           let holder = kRef(sect_holder);
  1868.           if (holder && comments.contains(holder)) {
  1869.  
  1870.             if (sect_lastUpdate) return;
  1871.             sect_lastUpdate = 1;
  1872.  
  1873.             timeline.setTimeout(function() {
  1874.               //console.log(2633)
  1875.               if (holder.textContent !== sect_hText && sect_hTime > 0) {
  1876.  
  1877.                 if (querySelectorAllFromAnchor.call(comments,'[tabview-cache-time]').length === 1) {
  1878.  
  1879.                   sect_hTime--;
  1880.  
  1881.                   let innerCommentsLoaderRet = _innerCommentsLoader(rootElement);
  1882.  
  1883.                   if (innerCommentsLoaderRet) {
  1884.                     //console.log(9442)
  1885.                     innerCommentsLoaderRet.f();
  1886.                     fetchCommentsFinished();
  1887.                   }
  1888.  
  1889.                   pendingOne = false;
  1890.  
  1891.                 }
  1892.  
  1893.  
  1894.               }
  1895.               sect_lastUpdate = 0
  1896.             }, 400)
  1897.  
  1898.           } else if (sect_holder) {
  1899.             sect_holder = null
  1900.             sect_hTime = 0;
  1901.             sect_lastUpdate = 0;
  1902.             pendingOne = false;
  1903.             timeline.setTimeout(()=>{
  1904.               if(!deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0 && comments.hasAttribute('hidden')){
  1905.  
  1906.                 scheduledCommentRefresh=false; // logic tbc
  1907.                 resetCommentSection();
  1908.                 
  1909.               }
  1910.             },142);
  1911.             
  1912.             Q.mutationTarget=null;
  1913.             FP.mtf_attrComments(); // in case for popstate
  1914.           }
  1915.  
  1916.  
  1917.         } else {
  1918.  
  1919.           //console.log(9443)
  1920.           innerCommentsLoaderRet.f();
  1921.           fetchCommentsFinished();
  1922.  
  1923.           pendingOne = true;
  1924.  
  1925.         }
  1926.  
  1927.  
  1928.  
  1929.       }
  1930.  
  1931.       function observerHook(mutationsList, observer){
  1932.  
  1933.         let valid = false
  1934.         for (const mutation of mutationsList) {
  1935.  
  1936.           let target = mutation.target;
  1937.           if (!target) break;
  1938.           if (!target.id) break;
  1939.           let classList = target.classList;
  1940.  
  1941.  
  1942.           if (
  1943.             classList.contains('ytd-item-section-renderer') ||
  1944.             classList.contains('ytd-comments-header-renderer') ||
  1945.             classList.contains('ytd-message-renderer')) {
  1946.             valid = true
  1947.             break;
  1948.           }
  1949.  
  1950.           break; // only outest mutation
  1951.  
  1952.  
  1953.         }
  1954.         if (valid) ulfx();
  1955.       }
  1956.  
  1957.       
  1958.       if(sections.hasAttribute('tabview-comment-section-checked')){
  1959.  
  1960.         //console.log(3612)
  1961.         ulfx();
  1962.         
  1963.  
  1964.       }else{
  1965.  
  1966.         pendingOne = false;
  1967.         //console.log(3611)
  1968.         const observer = new MutationObserver(observerHook)
  1969.         sections.setAttribute('tabview-comment-section-checked','')
  1970.         const config = { childList: true, subtree: true }; 
  1971.         observer.observe(sections, config);
  1972.         ulfx();
  1973.  
  1974.  
  1975.       }
  1976.  
  1977.  
  1978.  
  1979.     }
  1980.     //console.log(3241, location.href)
  1981.     
  1982.     let cid_render_section = timeline.setInterval(function() {
  1983.  
  1984.      // console.log(3244, location.href)
  1985.  
  1986.  
  1987.       const rootElement = comments.parentNode
  1988.  
  1989.       let sections = querySelectorFromAnchor.call(rootElement,'ytd-comments#comments > ytd-item-section-renderer#sections');
  1990.  
  1991.  
  1992.       if (sections) {
  1993.  
  1994.         timeline.clearInterval(cid_render_section);
  1995.         foundSection(sections);
  1996.  
  1997.       }
  1998.  
  1999.     }, 30)
  2000.  
  2001.  
  2002.  
  2003.   }
  2004.  
  2005.  
  2006.   let mtc_store=0;
  2007.   let mtc_cid = 0;
  2008.   const cssOnceFunc = {
  2009.     [`ytd-comments#comments:not([o3r-${sa_comments}])`]:(comments)=>{
  2010.       
  2011.       // once per {ytd-comments#comments} detection
  2012.  
  2013.       let ytdFlexyElm = kRef(ytdFlexy);
  2014.       if (!scriptEnable || !ytdFlexyElm) return;
  2015.  
  2016.       if (!comments) return;
  2017.  
  2018.  
  2019.  
  2020.  
  2021.       if(mtoVisibility_Comments.bindElement(comments)){
  2022.         mtoVisibility_Comments.observer.check(9);
  2023.       }
  2024.       
  2025.       pageInit_attrComments = true
  2026.       hookSection();
  2027.  
  2028.       //let dComments = comments
  2029.       //timeline.setTimeout(() => nativeFunc(dComments, "loadComments"), 20)
  2030.       //comments = null;
  2031.  
  2032.     },
  2033.     [`ytd-playlist-panel-renderer#playlist:not([o3r-${sa_playlist}])`]:(playlist)=>{
  2034.  
  2035.         // once per {ytd-playlist-panel-renderer#playlist} detection
  2036.  
  2037.         let ytdFlexyElm = kRef(ytdFlexy);
  2038.         if (!scriptEnable || !ytdFlexyElm) return;
  2039.  
  2040.         if (!playlist) return;
  2041.  
  2042.         if(mtoVisibility_Playlist.bindElement(playlist)){
  2043.           mtoVisibility_Playlist.observer.check(9)  //delay check required for browser bug - hidden changed not triggered 
  2044.         }
  2045.         playlist = null;
  2046.  
  2047.         return;
  2048.  
  2049.     },
  2050.     '#meta-contents ytd-expander:not([tabview-info-expander])':(expander)=>{
  2051.  
  2052.         // once per $$native-info-description$$ {#meta-contents ytd-expander} detection
  2053.  
  2054.         let ytdFlexyElm = kRef(ytdFlexy);
  2055.         if (!scriptEnable || !ytdFlexyElm) return ;
  2056.  
  2057.         if (!expander) return ;
  2058.         expander.setAttribute('tabview-info-expander','')
  2059.         $(expander).appendTo("#tab-info").attr('data-dom-changed-by-tabview-youtube', scriptVersionForExternal)
  2060.   
  2061.   
  2062.  
  2063.     },
  2064.     '#description-and-actions.style-scope.ytd-watch-metadata > #description ytd-text-inline-expander:not([tabview-removed-duplicate])': (teaserInfo)=>{
  2065.  
  2066.  
  2067.       // for Teaser UI
  2068.       // once per {#description-and-actions.style-scope.ytd-watch-metadata > #description > ytd-text-inline-expander} detection
  2069.  
  2070.       let ytdFlexyElm = kRef(ytdFlexy);
  2071.       if (!scriptEnable || !ytdFlexyElm) return ;
  2072.       let addedInfo = document.querySelector('#tab-info ytd-expander[tabview-info-expander]');
  2073.  
  2074.       if(!addedInfo) return;
  2075.  
  2076.       if(!document.documentElement.hasAttribute('tabview-injection-js-1-ready')) return;
  2077.  
  2078.       teaserInfo.setAttribute('tabview-removed-duplicate','')
  2079.  
  2080.  
  2081.       teaserInfo.dispatchEvent(new CustomEvent('tabview-no-duplicate-info'))
  2082.       //console.log(56)
  2083.  
  2084.     }
  2085.   }
  2086.   const cssOnce = Object.keys(cssOnceFunc).join(', ')
  2087.  
  2088.   const regularCheck = (addP, removeP, mutationTarget)=>{
  2089.  
  2090.  
  2091.     let isInvalidAdding = mutationTarget && !mutationTarget.parentNode
  2092.  
  2093.       
  2094.     let promisesForAddition = !scriptEnable ? [] : addP > 0 && !isInvalidAdding ? [
  2095.  
  2096.         (async () => {
  2097.  
  2098.           
  2099.           //$callOnce('mtf_checkFlexy');
  2100.  
  2101.           const rootElement = Q.mutationTarget || kRef(ytdFlexy);
  2102.  
  2103.           if(rootElement){
  2104.  
  2105.             let fElms = querySelectorAllFromAnchor.call(rootElement,cssOnce)
  2106.             if(fElms.length>0){
  2107.  
  2108.               for(const fElm of fElms){
  2109.                 for(let cssSelctor in cssOnceFunc){
  2110.                   if(fElm.matches(cssSelctor)){
  2111.                     let f= cssOnceFunc[cssSelctor]
  2112.                     if(typeof f=='function') f(fElm);
  2113.                     break;
  2114.                   }
  2115.  
  2116.                 }
  2117.               }
  2118.  
  2119.               //$callOnce('mtf_initalAttr_comments');
  2120.               //$callOnce('mtf_initalAttr_playlist');
  2121.               // $callOnce('mtf_checkDescriptionLoaded');
  2122.             }
  2123.  
  2124.           }
  2125.  
  2126.         })(),
  2127.     
  2128.         (async () => {
  2129.  
  2130.  
  2131.           FP.mtf_initalAttr_chatroom();
  2132.           FP.mtf_initalAttr_engagement_panel();
  2133.           
  2134.           //$callOnce('mtf_initalAttr_chatroom');
  2135.          // $callOnce('mtf_initalAttr_engagement_panel');
  2136.  
  2137.           mtf_forceCheckLiveVideo();
  2138.             mtf_append_comments();
  2139.             mtf_liveChatBtnF();
  2140.             fixTabs();
  2141.             mtf_AfterFixTabs();
  2142.             mtf_append_playlist();
  2143.  
  2144.         })()
  2145.  
  2146.     ] : [];
  2147.     
  2148.   
  2149.     
  2150.     let promisesForEveryMutation = !scriptEnable ? [] : [
  2151.         (async () => {
  2152.             mtf_fix_details();
  2153.             mtf_ChatExist();
  2154.         })()
  2155.     ];
  2156.  
  2157.     return [...promisesForAddition, ...promisesForEveryMutation]
  2158.  
  2159.  
  2160.   }
  2161.  
  2162.   function setOnlyOneEPanel(ePanel){
  2163.  
  2164.     layoutStatusMutex.lockWith(unlock => {
  2165.  
  2166.       let cPanels = engagement_panels_();
  2167.       for (const entry of cPanels.list) {
  2168.         if (entry.ePanel != ePanel && entry.visible) ytBtnCloseEngagementPanel(entry.ePanel);
  2169.       }
  2170.       setTimeout(unlock, 30)
  2171.  
  2172.     })
  2173.  
  2174.   }
  2175.  
  2176.   const FP = {
  2177.  
  2178.     mtoNav_delayedF: () => {
  2179.  
  2180.       let { addP, removeP, mutationTarget } = Q;
  2181.  
  2182.       Q.addP = 0;
  2183.       Q.removeP = 0;
  2184.       
  2185.       mtc_store=Date.now()+1870
  2186.  
  2187.  
  2188.       let regularChecks = regularCheck(addP, removeP, mutationTarget);
  2189.  
  2190.       Promise.all(regularChecks).then(() => {
  2191.         regularChecks = null;
  2192.         
  2193.         mtc_store= Date.now() + 3870 // pending Comments start to load
  2194.         
  2195.         Q.mutationTarget = null;
  2196.  
  2197.         Q.mtoNav_requestNo--;
  2198.         //console.log('motnav reduced to', mtoNav_requestNo)
  2199.         if (Q.mtoNav_requestNo > 0) {
  2200.           Q.mtoNav_requestNo = 1;
  2201.           setTimeout(FP.mtoNav_delayedF, mtoInterval);
  2202.         }
  2203.       })
  2204.  
  2205.  
  2206.     },
  2207.  
  2208.     mtoNavF: ( /** @type {MutationRecord[]} */ mutations,  /** @type {MutationObserver} */   observer) => {
  2209.       //subtree DOM mutation checker - {ytd-watch-flexy} \single \subtree
  2210.  
  2211.       newVideoPageCheck()
  2212.  
  2213.       if (!scriptEnable) return;
  2214.       if (deferredVarYTDHidden) return;
  2215.  
  2216.       let ch = false;
  2217.  
  2218.       let reg = [];
  2219.       let dTarget = null;
  2220.  
  2221.       let wAddP = 0,
  2222.         wRemoveP = 0;
  2223.  
  2224.       let _last_mto_target = null;
  2225.       let _last_mto_target_valid = null;
  2226.  
  2227.       for (const mutation of mutations) {
  2228.         if (!mutation || !mutation.target || !mutation.target.parentNode) continue;
  2229.  
  2230.         let elementalMutation = false;
  2231.         let tAddP = 0,
  2232.           tRemoveP = 0;
  2233.  
  2234.         for (const addedNode of mutation.addedNodes) { //theoretically faster: only reading of states
  2235.           if (addedNode.nodeType === 1) {
  2236.             tAddP++;
  2237.             elementalMutation = true;
  2238.           }
  2239.         }
  2240.  
  2241.         for (const removedNode of mutation.removedNodes) { //theoretically faster: only reading of states
  2242.           if (removedNode.nodeType === 1) {
  2243.             tRemoveP++;
  2244.             elementalMutation = true;
  2245.           }
  2246.         }
  2247.  
  2248.         if (elementalMutation) { //skip all addition and removal operations without elemental changes (e.g. textNode modification)
  2249.  
  2250.           if (_last_mto_target === mutation.target) {
  2251.             // due to addition and removal operations to the same DOM
  2252.             if (_last_mto_target_valid) {
  2253.               // AddP & RemoveP is still valid
  2254.               wAddP += tAddP;
  2255.               wRemoveP += tRemoveP;
  2256.             }
  2257.             continue;
  2258.           }
  2259.           _last_mto_target = mutation.target;
  2260.  
  2261.           if (isMtoTargetSkip(mutation)) {
  2262.             _last_mto_target_valid = false;
  2263.             continue; //theoretically slower: creation of string variables
  2264.           } else {
  2265.             _last_mto_target_valid = true;
  2266.             wAddP += tAddP;
  2267.             wRemoveP += tRemoveP;
  2268.           }
  2269.  
  2270.  
  2271.  
  2272.           ch = true;
  2273.  
  2274.           reg.push(mutation);
  2275.  
  2276.           if (dTarget === null) dTarget = mutation.target; //first
  2277.           else if (dTarget === true) {} //ytdFlexy
  2278.           else if (dTarget.contains(mutation.target)) {} //first node is the container to all subsequential targets
  2279.           else { dTarget = true; } //the target is not the child of first node
  2280.  
  2281.         }
  2282.  
  2283.       }
  2284.  
  2285.       if (!ch) return; // dTarget must be true OR HTMLElement
  2286.  
  2287.       if (dTarget === true) dTarget = kRef(ytdFlexy); // major mutation occurance
  2288.       else if (dTarget === kRef(comments_section_loaded_elm) && wAddP > wRemoveP) return true; // ignore if comments are loaded (adding comments)
  2289.       else if (isMtoOverallSkip(dTarget)) return; // allow for multiple mutations at the same time - determinated after looping
  2290.  
  2291.  
  2292.  
  2293.       // 4 ~ 16 times per full page loading
  2294.  
  2295.       Q.addP += wAddP;
  2296.       Q.removeP += wRemoveP;
  2297.  
  2298.       if (Q.mutationTarget === null) Q.mutationTarget = dTarget;
  2299.       else if (Q.mutationTarget != dTarget) Q.mutationTarget = kRef(ytdFlexy);
  2300.  
  2301.       //console.log(prettyElm(dTarget), wAddP , wRemoveP, mtoInterval)
  2302.       //console.log(prettyElm(dTarget), reg.map(m=>prettyElm(m.target)))
  2303.       //console.log(7015, performance.now())
  2304.  
  2305.  
  2306.  
  2307.       Q.mtoNav_requestNo++;
  2308.       if (Q.mtoNav_requestNo == 1) setTimeout(FP.mtoNav_delayedF, mtoInterval);
  2309.  
  2310.     },
  2311.  
  2312.  
  2313.     mtoBodyF: ( /** @type {MutationRecord[]} */ mutations,  /** @type {MutationObserver} */   observer) => {
  2314.       //subtree DOM mutation checker - {body} \single \subtree
  2315.  
  2316.       if (!scriptEnable) return;
  2317.       if (deferredVarYTDHidden) return;
  2318.  
  2319.       for (const mutation of mutations) {
  2320.         for (const addedNode of mutation.addedNodes)
  2321.           if (addedNode.nodeType === 1) {
  2322.             if (addedNode.nodeName == "DIV" && addedNode.matches('.autocomplete-suggestion:not([autocomplete-disable-updatesc])') ) {
  2323.               mtf_fixAutoCompletePosition(addedNode)
  2324.             }else if(addedNode.nodeName == "DIV" && (addedNode.id==='lyricscontainer' || addedNode.id==='showlyricsbutton')){
  2325.  
  2326.               goYoutubeGeniusLyrics();
  2327.  
  2328.             }
  2329.           }
  2330.       }
  2331.  
  2332.     },
  2333.  
  2334.     mtf_attrPlaylist: (attrName, newValue) => {
  2335.       //attr mutation checker - {ytd-playlist-panel-renderer#playlist} \single
  2336.       //::attr ~ hidden    
  2337.       //console.log(1210)
  2338.  
  2339.       if (!scriptEnable) return;
  2340.       if (deferredVarYTDHidden) return;
  2341.       let cssElm = kRef(ytdFlexy);
  2342.       if (!cssElm) return;
  2343.  
  2344.       let playlist = document.querySelector('ytd-playlist-panel-renderer#playlist')
  2345.       const tabBtn = document.querySelector('[userscript-tab-content="#tab-list"]');
  2346.       let isPlaylistHidden = playlist.hasAttribute('hidden')
  2347.       //console.log(1212.2, isPlaylistHidden, playlist.getAttribute('hidden'))
  2348.       if (tabBtn) {
  2349.         //console.log('attr playlist changed')
  2350.         if (tabBtn.classList.contains('tab-btn-hidden') && !isPlaylistHidden) {
  2351.           //console.log('attr playlist changed - no hide')
  2352.           tabBtn.classList.remove("tab-btn-hidden");
  2353.         } else if (!tabBtn.classList.contains('tab-btn-hidden') && isPlaylistHidden) {
  2354.           //console.log('attr playlist changed - add hide')
  2355.           hideTabBtn(tabBtn);
  2356.         }
  2357.       }
  2358.       /* visible layout for triggering hidden removal */
  2359.       akAttr(cssElm, 'tabview-youtube-playlist', isPlaylistHidden);
  2360.     },
  2361.     mtf_attrComments: (attrName, newValue) => {
  2362.       //attr mutation checker - {ytd-comments#comments} \single
  2363.       //::attr ~ hidden
  2364.  
  2365.       let ytdFlexyElm = kRef(ytdFlexy);
  2366.       if (!scriptEnable || !ytdFlexyElm) return;
  2367.       if (deferredVarYTDHidden) return;
  2368.  
  2369.       let comments = document.querySelector('ytd-comments#comments')
  2370.       const tabBtn = document.querySelector('[userscript-tab-content="#tab-comments"]');
  2371.       if (!comments || !tabBtn) return;
  2372.       let isCommentHidden = comments.hasAttribute('hidden')
  2373.       //console.log('attr comments changed')
  2374.  
  2375.       mtoInterval = mtoInterval1;
  2376.       
  2377.       mtc_store=Date.now()+2870
  2378.  
  2379.       if( mtf_forceCheckLiveVideo_disable === 2 ){
  2380.  
  2381.       }else if (!isCommentHidden) {
  2382.         
  2383.  
  2384.         akAttr(ytdFlexyElm, 'tabview-youtube-comments', false, 'K');
  2385.  
  2386.  
  2387.  
  2388.         //console.log('attr comments changed - no hide')
  2389.         tabBtn.classList.remove("tab-btn-hidden") //if contains
  2390.  
  2391.             
  2392.         
  2393.         //console.log(703)
  2394.  
  2395.         mtc_cid&&timeline.clearInterval(mtc_cid);
  2396.  
  2397.       } else if (isCommentHidden) {
  2398.  
  2399.         akAttr(ytdFlexyElm, 'tabview-youtube-comments', true, 'K'); 
  2400.         
  2401.         timeline.setTimeout(function(){
  2402.           if(!deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0 && comments.hasAttribute('hidden')){
  2403.             //console.log(3434)
  2404.             scheduledCommentRefresh=false;  //logic tbc
  2405.             resetCommentSection();
  2406.             //console.log(8022)
  2407.           }
  2408.         },142)
  2409.  
  2410.  
  2411.         if(!mtc_cid) mtc_cid=timeline.setInterval(()=>{
  2412.           if(mtc_store>Date.now()) return;
  2413.             timeline.clearInterval(mtc_cid)
  2414.             mtc_cid=0;
  2415.             if(mtf_forceCheckLiveVideo_disable===2)return;
  2416.             if(isNullComments()) _disableComments();
  2417.  
  2418.         },80)
  2419.  
  2420.       }
  2421.  
  2422.  
  2423.     },
  2424.  
  2425.  
  2426.     mtf_attrChatroom: (attrName, newValue) => {
  2427.       //attr mutation checker - {ytd-live-chat-frame#chat} \single
  2428.       //::attr ~ collapsed
  2429.  
  2430.       let ytdFlexyElm = kRef(ytdFlexy);
  2431.       if (!scriptEnable || !ytdFlexyElm) return;
  2432.       if (deferredVarYTDHidden) return;
  2433.  
  2434.       layoutStatusMutex.lockWith(unlock => {
  2435.  
  2436.         const chatBlock = document.querySelector('ytd-live-chat-frame#chat')
  2437.         const cssElm = kRef(ytdFlexy)
  2438.  
  2439.         if (!chatBlock || !cssElm) {
  2440.           unlock();
  2441.           return;
  2442.         }
  2443.  
  2444.         if (deferredVarYTDHidden) {
  2445.           unlock();
  2446.           return;
  2447.         }
  2448.  
  2449.         if (!cssElm.hasAttribute('userscript-chatblock')) wAttr(cssElm, 'userscript-chatblock', true);
  2450.         let isCollapsed = !!chatBlock.hasAttribute('collapsed');
  2451.         wAttr(cssElm, 'userscript-chat-collapsed', isCollapsed);
  2452.  
  2453.         if (cssElm.hasAttribute('userscript-chatblock') && !isCollapsed) lastShowTab = '#chatroom';
  2454.  
  2455.         if (!isCollapsed && document.querySelector('#right-tabs .tab-btn.active') && isWideScreenWithTwoColumns() && !isTheater()) {
  2456.           switchTabActivity(null);
  2457.           timeline.setTimeout(unlock, 40);
  2458.         } else {
  2459.           unlock();
  2460.         }
  2461.  
  2462.         if (!isCollapsed) {
  2463.           runAfterExpandChat();
  2464.         } else {
  2465.           chatBlock.removeAttribute('yt-userscript-iframe-loaded');
  2466.         }
  2467.  
  2468.       })
  2469.  
  2470.  
  2471.  
  2472.  
  2473.     },
  2474.  
  2475.     mtf_attrEngagementPanel: ( /** @type {MutationRecord[]} */ mutations,  /** @type {MutationObserver} */   observer) => {
  2476.       //attr mutation checker - {ytd-engagement-panel-section-list-renderer} \mutiple
  2477.       //::attr ~ visibility
  2478.  
  2479.       let ytdFlexyElm = kRef(ytdFlexy);
  2480.       if (!scriptEnable || !ytdFlexyElm) return;
  2481.  
  2482.       //multiple instance
  2483.       if (mutations) {
  2484.         for (const mutation of mutations) {
  2485.           let ePanel = mutation.target;
  2486.           if (ePanel.getAttribute('visibility') == 'ENGAGEMENT_PANEL_VISIBILITY_EXPANDED') {
  2487.             setOnlyOneEPanel(ePanel);
  2488.             break;
  2489.           }
  2490.         }
  2491.       }
  2492.       if (deferredVarYTDHidden) return;
  2493.  
  2494.       layoutStatusMutex.lockWith(unlock => {
  2495.  
  2496.         const ePanel = document.querySelector('ytd-watch-flexy ytd-engagement-panel-section-list-renderer')
  2497.         const cssElm = kRef(ytdFlexy)
  2498.  
  2499.         if (!ePanel || !cssElm) {
  2500.           unlock();
  2501.           return;
  2502.         }
  2503.         let previousValue = +cssElm.getAttribute('userscript-engagement-panel') || 0;
  2504.  
  2505.         let { shownRes, value, count } = engagement_panels_();
  2506.         let nextValue = value;
  2507.         let nextCount = count;
  2508.  
  2509.  
  2510.         if (nextCount == 0 && cssElm.hasAttribute('userscript-engagement-panel')) {
  2511.           storeLastPanel=null;
  2512.           wAttr(cssElm, 'userscript-engagement-panel', false);
  2513.           unlock();
  2514.         } else {
  2515.  
  2516.           if ((nextCount > 1) || (cssElm.hasAttribute('userscript-engagement-panel') && previousValue === nextValue)) {
  2517.             unlock();
  2518.             return;
  2519.           }
  2520.  
  2521.           cssElm.setAttribute('userscript-engagement-panel', nextValue);
  2522.  
  2523.           let b = false;
  2524.           if (previousValue != nextValue && nextValue > 0) {
  2525.             lastShowTab = `#engagement-panel-${nextValue}`;
  2526.             b = true;
  2527.             storeLastPanel = mWeakRef( shownRes[0])
  2528.             //console.log(9999, shownRes[0])
  2529.           }
  2530.  
  2531.           if (b && document.querySelector('#right-tabs .tab-btn.active') && isWideScreenWithTwoColumns() && !isTheater()) {
  2532.             switchTabActivity(null);
  2533.             timeline.setTimeout(unlock, 40);
  2534.           } else {
  2535.             unlock();
  2536.           }
  2537.         }
  2538.  
  2539.       })
  2540.  
  2541.  
  2542.  
  2543.  
  2544.     },
  2545.  
  2546.     mtf_initalAttr_playlist: () => {
  2547.       
  2548.     },
  2549.  
  2550.     mtf_initalAttr_comments: () => {
  2551.       
  2552.     },
  2553.  
  2554.     mtf_initalAttr_chatroom: () => {
  2555.       // every per [new] {ytd-live-chat-frame#chat} detection - reset after mini-playview
  2556.       
  2557.       let ytdFlexyElm = kRef(ytdFlexy);
  2558.       if (!scriptEnable || !ytdFlexyElm) return true;
  2559.  
  2560.       const rootElement = Q.mutationTarget || ytdFlexyElm;
  2561.  
  2562.  
  2563.       if (!mgChatFrame.inPage()) {
  2564.  
  2565.         mtoVisibility_Chatroom.clear(true);
  2566.  
  2567.         let chatroom = querySelectorFromAnchor.call(rootElement,`ytd-live-chat-frame#chat:not([${sa_chatroom}]`)
  2568.         if (chatroom) {
  2569.           mgChatFrame.setVar(chatroom);
  2570.  
  2571.           if(mtoVisibility_Chatroom.bindElement(chatroom)){
  2572.             mtoVisibility_Chatroom.observer.check(9)
  2573.           }
  2574.  
  2575.           chatroom = null
  2576.         }
  2577.       }
  2578.       return true;
  2579.  
  2580.     },
  2581.  
  2582.     mtf_initalAttr_engagement_panel: () => {
  2583.       // every per $$non-checked-section-list$$ {ytd-watch-flexy ytd-engagement-panel-section-list-renderer:not([o3r-XXXXX])} detection
  2584.       
  2585.       let ytdFlexyElm = kRef(ytdFlexy);
  2586.       if (!scriptEnable || !ytdFlexyElm) return true;
  2587.  
  2588.       const rootElement = Q.mutationTarget || ytdFlexyElm;
  2589.  
  2590.       let toCheck = false;
  2591.       for (const engagement_panel of querySelectorAllFromAnchor.call(rootElement,
  2592.         `ytd-watch-flexy ytd-engagement-panel-section-list-renderer:not([o3r-${sa_epanel}])`
  2593.         )) {
  2594.  
  2595.  
  2596.  
  2597.         let bindRes = mtoVisibility_EngagementPanel.bindElement(engagement_panel, {
  2598.           attributes: true,
  2599.           attributeFilter: ['visibility'],
  2600.           attributeOldValue: true
  2601.         })
  2602.         
  2603.  
  2604.         if(bindRes) toCheck = true;
  2605.       }
  2606.  
  2607.       if (toCheck) FP.mtf_attrEngagementPanel()
  2608.  
  2609.       return true;
  2610.     },
  2611.  
  2612.  
  2613.  
  2614.     //live-chat / chat-replay
  2615.  
  2616.     fireOnce_forceCheckLiveVideo_tf: () => {
  2617.       // once per $$player-playback-timestamp$$ {#ytd-player .ytp-time-display} &&  $$chat-frame$$ {ytd-live-chat-frame#chat} detection
  2618.  
  2619.       let ytdFlexyElm = kRef(ytdFlexy);
  2620.       if (!scriptEnable || !ytdFlexyElm) return;
  2621.  
  2622.       let elm = document.querySelector('#ytd-player .ytp-time-display');
  2623.       if (elm && elm.classList.contains('ytp-live')) {
  2624.         //console.log(7006)
  2625.         ytdFlexyElm.setAttribute('userscript-chatblock', 'chat-live')
  2626.         //console.log(2441)
  2627.         mtf_forceCheckLiveVideo_disable = 2;
  2628.         
  2629.         _disableComments();
  2630.         
  2631.        //console.log(701)
  2632.         //disableComments_LiveChat();
  2633.       }
  2634.     },
  2635.  
  2636.     
  2637.  
  2638.     //comments
  2639. /*
  2640.     mtf_advancedComments: () => {
  2641.       // once per {ytd-comments#comments #continuations} detection
  2642.  
  2643.       //let ytdFlexyElm = kRef(ytdFlexy);
  2644.       //if (!scriptEnable || !ytdFlexyElm) return true;
  2645.  
  2646.       //const rootElement = Q.mutationTarget || ytdFlexyElm;
  2647.       //const continuations = document.querySelector("ytd-comments#comments #continuations");
  2648.       //if (!continuations) return true;
  2649.       //requestingComments = document.querySelector('ytd-comments#comments');
  2650.       //scrollForComments();
  2651.       return false;
  2652.     }
  2653.     */
  2654.  
  2655.  
  2656.   }
  2657.  
  2658.  
  2659.  
  2660.  
  2661.  
  2662.   /** @type {WeakRef | null} */ 
  2663.   let displayedPlaylist = null;
  2664.   
  2665.   /** @type {WeakRef | null} */ 
  2666.   let scrollingVideosList = null;
  2667.  
  2668.   let scriptEnable = false;
  2669.   let scriptEC = 0;
  2670.   let lastShowTab = null;
  2671.  
  2672.   let _cachedLastVideo = null;
  2673.   let videoListBeforeSearch = null;
  2674.   let no_fix_contents_until = 0;
  2675.   let no_fix_playlist_until = 0;
  2676.   let statusCollasped = 0;
  2677.  
  2678.   /** @type {WeakRef | null} */ 
  2679.   let ytdFlexy = null;
  2680.  
  2681.   function pluginUnhook() {
  2682.     _pluginUnhook();
  2683.     resetCommentSection();
  2684.   }
  2685.  
  2686.   function _pluginUnhook() {
  2687.  
  2688.     sect_lastUpdate = 0;
  2689.     sect_holder = null;
  2690.     sect_hTime = 0;
  2691.  
  2692.     //console.log(8001)
  2693.  
  2694.     videoListBeforeSearch = null;
  2695.     statusCollasped = 0;
  2696.     _cachedLastVideo = null;
  2697.     lastShowTab = null;
  2698.     displayedPlaylist = null;
  2699.     scrollingVideosList = null;
  2700.     scriptEnable = false;
  2701.     scriptEC++;
  2702.     if (scriptEC > 788888888) scriptEC = 188888888;
  2703.     ytdFlexy = null;
  2704.     wls.layoutStatus = null;
  2705.  
  2706.     //console.log('unc01')
  2707.  
  2708.     mtoVisibility_EngagementPanel.clear(true)
  2709.     mtoVisibility_Playlist.clear(true)
  2710.     mtoVisibility_Comments.clear(true)
  2711.  
  2712.     mgChatFrame.kVar = null;
  2713.     mtoVisibility_Chatroom.clear(true)
  2714.     mtoFlexyAttr.clear(true)
  2715.  
  2716.     
  2717.  
  2718.     for (const elem of document.querySelectorAll(
  2719.       ['ytd-expander[tabview-info-expander]'].join(', ')
  2720.       )) {
  2721.         elem.removeAttribute('tabview-info-expander');
  2722.     }
  2723.  
  2724.     
  2725.     mtoMutation_body.clear(true)
  2726.     mtoMutation_watchFlexy.clear(true)
  2727.     //FOnce.mtf_checkFlexy = null;
  2728.     //FOnce.mtf_initalAttr_comments = null;
  2729.     //FOnce.mtf_initalAttr_playlist = null;
  2730.     //FOnce.mtf_initalAttr_chatroom = null;
  2731.     //FOnce.mtf_initalAttr_engagement_panel = null;
  2732.     //FOnce.mtf_advancedComments = null;
  2733.     //FOnce.mtf_checkDescriptionLoaded = null;
  2734.     //FOnce.mtf_forceCheckLiveVideo = null;
  2735.     Q.mtf_chatBlockQ = null;
  2736.  
  2737.  
  2738.     mtoInterval = mtoInterval1;
  2739.  
  2740.   }
  2741.  
  2742.   let comments_section_loaded_elm = null;
  2743.  
  2744.  
  2745.  
  2746.   function getTabsHTML() {
  2747.  
  2748.     const sTabBtnVideos = `${svgElm(16,16,298,298,svgVideos)}<span>Videos</span>`
  2749.     const sTabBtnInfo = `${svgElm(16,16,23.625,23.625,svgInfo)}<span>Info</span>`
  2750.     const sTabBtnPlayList = `${svgElm(16,16,426.667,426.667,svgPlayList)}<span>Playlist</span>`
  2751.  
  2752.     let str1 = `
  2753.         <paper-ripple class="style-scope yt-icon-button">
  2754.             <div id="background" class="style-scope paper-ripple" style="opacity:0;"></div>
  2755.             <div id="waves" class="style-scope paper-ripple"></div>
  2756.         </paper-ripple>
  2757.         `;
  2758.  
  2759.     let str_fbtns = `
  2760.     <div class="font-size-right">
  2761.     <div class="font-size-btn font-size-plus">
  2762.     <svg width="12" height="12" viewbox="0 0 50 50" preserveAspectRatio="xMidYMid meet" 
  2763.     stroke="currentColor" stroke-width="6" stroke-linecap="round" vector-effect="non-scaling-size">
  2764.       <path d="M12 25h26"/><path d="M25 12v26"/>
  2765.     </svg>
  2766.     </div><div class="font-size-btn font-size-minus">
  2767.     <svg width="12" height="12" viewbox="0 0 50 50" preserveAspectRatio="xMidYMid meet"
  2768.     stroke="currentColor" stroke-width="6" stroke-linecap="round" vector-effect="non-scaling-size">
  2769.       <path d="M12 25h26"/>
  2770.     </svg>
  2771.     </div>
  2772.     </div>
  2773.     `.replace(/[\r\n]+/g,'')
  2774.  
  2775.     const str_tabs = [
  2776.             `<a id="tab-btn1" data-name="info" userscript-tab-content="#tab-info" class="tab-btn">${sTabBtnInfo}${str1}${str_fbtns}</a>`,
  2777.             `<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}${str_fbtns}</a>`,
  2778.             `<a id="tab-btn4" userscript-tab-content="#tab-videos" data-name="videos" class="tab-btn">${sTabBtnVideos}${str1}${str_fbtns}</a>`,
  2779.             `<a id="tab-btn5" userscript-tab-content="#tab-list" class="tab-btn">${sTabBtnPlayList}${str1}${str_fbtns}</a>`
  2780.         ].join('')
  2781.  
  2782.     let addHTML = `
  2783.         <div id="right-tabs">
  2784.             <header>
  2785.                 <div id="material-tabs">
  2786.                     ${str_tabs}
  2787.                 </div>
  2788.             </header>
  2789.             <div class="tab-content">
  2790.                 <div id="tab-info" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2791.                 <div id="tab-comments" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2792.                 <div id="tab-videos" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2793.                 <div id="tab-list" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2794.             </div>
  2795.         </div>
  2796.         `;
  2797.  
  2798.     return addHTML
  2799.  
  2800.   }
  2801.  
  2802.  
  2803.   function onVideoChange() {
  2804.     // for popstate & next video
  2805.  
  2806.     newVideoPageCheck();
  2807.  
  2808.     scheduledCommentRefresh=true;
  2809.     let comments = document.querySelector('ytd-comments#comments')
  2810.     
  2811.     if(!deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0 && comments.hasAttribute('hidden')){
  2812.  
  2813.       scheduledCommentRefresh=false; 
  2814.       
  2815.       // comment tab btn - hide by timer in attribute change
  2816.       resetCommentSection();
  2817.     }
  2818.  
  2819.     mtf_forceCheckLiveVideo_disable = 0
  2820.     mtc_store= Date.now()+3870
  2821.  
  2822.     if (deferredVarYTDHidden) {  // reset info when hidden
  2823.       
  2824.       resetCommentSection();
  2825.     }else{
  2826.       checkVisibleEngagementPanel();
  2827.       atChange(); // in case no mutation occurance
  2828.     }
  2829.  
  2830.  
  2831.  
  2832.   }
  2833.  
  2834.   function onNavigationEnd(evt) {
  2835.     console.log('yt-navigate-finish')
  2836.     
  2837.     no_fix_contents_until = 0;
  2838.     no_fix_playlist_until = 0;
  2839.     
  2840.     document.documentElement.setAttribute('youtube-ready','')
  2841.     
  2842.     script_inject_js1.inject();
  2843.     document.documentElement.dispatchEvent(new CustomEvent('tabview-ce-hack'))
  2844.  
  2845.     forceConfig();
  2846.     /*
  2847.     console.log(window.ytcfg)
  2848.     try{
  2849.     window.ytcfg.set({
  2850.       "EXPERIMENT_FLAGS": {"kevlar_watch_metadata_refresh":false}})
  2851.     }catch(e){}
  2852.     */
  2853.  
  2854.     newVideoPageCheck(); // required for init
  2855.  
  2856.     let mRet =
  2857.       (/^https?\:\/\/(\w+\.)*youtube\.com\/watch\?(\w+\=[^\/\?\&]+\&|\w+\=?\&)*v=[\w\-\_]+/.test(window.location.href) ? 1 : 0) +
  2858.       (document.querySelector('ytd-watch-flexy[tabview-selection]') ? 2 : 0);
  2859.  
  2860.     if (mRet === 1) {
  2861.  
  2862.       document.addEventListener('loadedmetadata', function(evt) {
  2863.         if (evt.target.matches('video[tabview-mainvideo]')) {
  2864.           setTimeout(onVideoChange, 30)
  2865.         }
  2866.       }, true)
  2867.  
  2868.       pluginUnhook(); // in case not triggered by popstate - say mini playing
  2869.  
  2870.       let timeout = 4; // max. 4 animation frames
  2871.  
  2872.       let tf = () => {
  2873.  
  2874.         if (--timeout > 0 && !document.querySelector('#player video')) return requestAnimationFrame(tf);
  2875.  
  2876.         let ytdFlexyElm = document.querySelector('ytd-watch-flexy')
  2877.  
  2878.         if(!ytdFlexyElm) return;
  2879.  
  2880.  
  2881.         scriptEnable = true;
  2882.         scriptEC++;
  2883.  
  2884.         no_fix_contents_until = 0;
  2885.         no_fix_playlist_until = 0;
  2886.  
  2887.         ytdFlexy = mWeakRef(ytdFlexyElm)
  2888.  
  2889.         let timeoutR_findRelated = new Timeout();
  2890.         timeoutR_findRelated.set(function() {
  2891.           let ytdFlexyElm = kRef(ytdFlexy);
  2892.           if(!ytdFlexyElm) return true;
  2893.           let related = querySelectorFromAnchor.call(ytdFlexyElm,"#related");
  2894.           if (!related) return true;
  2895.           foundRelated(related);
  2896.         }, 100, 10)
  2897.  
  2898.         function foundRelated(related) {
  2899.           let promise = Promise.resolve();
  2900.           if (!document.querySelector("#right-tabs")) {
  2901.             promise = promise.then(() => {
  2902.               $(getTabsHTML()).insertBefore(related).attr('data-dom-created-by-tabview-youtube', scriptVersionForExternal);
  2903.             })
  2904.           }
  2905.           promise.then(runAfterTabAppended)
  2906.         }
  2907.  
  2908.         /*
  2909.         setTimeout(() => {
  2910.           for (const s of document.querySelectorAll('#right-tabs [userscript-scrollbar-render]')) {
  2911.             Promise.resolve(s).then(s => {
  2912.               if (s && s.scrollTop > 0) s.scrollTop = 0;
  2913.               let child = s.firstElementChild;
  2914.               if (child && child.scrollTop > 0) child.scrollTop = 0;
  2915.             });
  2916.           }
  2917.         }, 90)
  2918.         */
  2919.  
  2920.  
  2921.       }
  2922.  
  2923.       tf();
  2924.  
  2925.     } else if (mRet === 3) {
  2926.  
  2927.       if(!scriptEnable) return;
  2928.  
  2929.       let elmComments = document.querySelector('ytd-comments#comments')
  2930.  
  2931.       if (elmComments) {
  2932.         nativeFunc(elmComments, "loadComments")
  2933.       }
  2934.  
  2935.     } else if (mRet === 0) {
  2936.       
  2937.  
  2938.       pluginUnhook(); // in case not triggered by popstate - say mini playing
  2939.  
  2940.     }
  2941.  
  2942.     if(mRet & 1){
  2943.       
  2944.       setTimeout(()=>{
  2945.         
  2946.         Q.mutationTarget=null;
  2947.         atChange(); // in case no mutation occurance
  2948.         FP.mtf_attrComments()
  2949.       },160);
  2950.         
  2951.     }
  2952.  
  2953.   }
  2954.  
  2955.  
  2956.   function setToActiveTab(defaultTab) {
  2957.     if (isTheater() && isWideScreenWithTwoColumns()) return;
  2958.     const jElm = document.querySelector(`a[userscript-tab-content="${switchTabActivity_lastTab}"]:not(.tab-btn-hidden)`) ||
  2959.       document.querySelector(`a[userscript-tab-content="${(defaultTab||settings.defaultTab)}"]:not(.tab-btn-hidden)`) ||
  2960.       document.querySelector("a[userscript-tab-content]:not(.tab-btn-hidden)") ||
  2961.       null;
  2962.     switchTabActivity(jElm);
  2963.     return !!jElm;
  2964.   }
  2965.  
  2966.   function getWrapper(wrapperId) {
  2967.     let $wrapper = $(`#${wrapperId}`);
  2968.     if (!$wrapper[0]) $wrapper = $(`<div id="${wrapperId}"></div>`)
  2969.     return $wrapper.first();
  2970.   }
  2971.  
  2972.   function runAfterTabAppended() {
  2973.  
  2974.     document.documentElement.setAttribute('plugin-tabview-youtube', '')
  2975.  
  2976.     const ytdFlexyElm = kRef(ytdFlexy)
  2977.     if(!ytdFlexyElm) return;
  2978.     if (!ytdFlexyElm.hasAttribute('tabview-selection')) ytdFlexyElm.setAttribute('tabview-selection', '')
  2979.  
  2980.     
  2981.  
  2982.     
  2983.     //console.log('unc02')
  2984.  
  2985.     // append the next videos 
  2986.     // it exists as "related" is already here
  2987.     fixTabs();
  2988.  
  2989.     // just switch to the default tab
  2990.     setToActiveTab();
  2991.  
  2992.  
  2993.     prepareTabBtn();
  2994.  
  2995.  
  2996.     // append the detailed meta contents to the tab-info
  2997.     // ** FOnce.mtf_checkDescriptionLoaded = FP.mtf_checkDescriptionLoaded;
  2998.     // ** if (Q.mutationTarget === null) $callOnceAsync('mtf_checkDescriptionLoaded');
  2999.  
  3000.     // force window scroll when #continuations is first detected and #comments still [hidden]
  3001.     //FOnce.mtf_advancedComments = FP.mtf_advancedComments;
  3002.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_advancedComments');
  3003.  
  3004.     // use video player's element to detect the live-chat situation (no commenting section)
  3005.     // 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
  3006.     //FOnce.mtf_forceCheckLiveVideo = FP.mtf_forceCheckLiveVideo;
  3007.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_forceCheckLiveVideo');
  3008.     //mtf_forceCheckLiveVideo();
  3009.  
  3010.  
  3011.     // Attr Mutation Observer - #playlist - hidden
  3012.     //clearMutationObserver(mtoVs, 'mtoVisibility_Playlist')
  3013.     // Attr Mutation Observer callback - #playlist - hidden
  3014.  
  3015.     // pending for #playlist and set Attribute Observer
  3016.     // ** FOnce.mtf_initalAttr_playlist = FP.mtf_initalAttr_playlist
  3017.     // ** if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_playlist');
  3018.  
  3019.     // Attr Mutation Observer - ytd-comments#comments - hidden
  3020.     //clearMutationObserver(mtoVs, 'mtoVisibility_Comments')
  3021.     // Attr Mutation Observer callback - ytd-comments#comments - hidden
  3022.  
  3023.     // pending for #comments and set Attribute Observer
  3024.     // ** FOnce.mtf_initalAttr_comments = FP.mtf_initalAttr_comments;
  3025.     // ** if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_comments');
  3026.  
  3027.  
  3028.     //clearMutationObserver(mtoVs, 'mtoVisibility_Chatroom');
  3029.     //FOnce.mtf_initalAttr_chatroom = FP.mtf_initalAttr_chatroom
  3030.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_chatroom');
  3031.  
  3032.     // clearMutationObserver(mtoVs, 'mtoVisibility_EngagementPanel');
  3033.     // for (const engagement_panel of document.querySelectorAll('ytd-watch-flexy ytd-engagement-panel-section-list-renderer:not([tabview-attr-checked])')) {
  3034.     //   engagement_panel.removeAttribute('tabview-attr-checked');
  3035.     // }
  3036.     //FOnce.mtf_initalAttr_engagement_panel = FP.mtf_initalAttr_engagement_panel
  3037.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_engagement_panel');
  3038.  
  3039.  
  3040.     mtoFlexyAttr.clear(true)
  3041.     mtf_checkFlexy()
  3042.  
  3043.  
  3044.     document.querySelector("#right-tabs .tab-content").addEventListener('scroll', makeBodyScrollByEvt, true);
  3045.  
  3046.  
  3047.     Q.addP = 0;
  3048.     Q.removeP = 0;
  3049.     Q.mutationTarget = null;
  3050.  
  3051.     Q.mtoNav_requestNo = 0;
  3052.  
  3053.  
  3054.     mtoMutation_watchFlexy.bindElement(ytdFlexyElm, {
  3055.       childList: true,
  3056.       subtree: true,
  3057.       attributes: false
  3058.     })
  3059.  
  3060.     // for automcomplete plugin or other userscript plugins
  3061.     // document.body for Firefox >= 60
  3062.     mtoMutation_body.bindElement(document.querySelector('body'), {
  3063.       childList: true,
  3064.       subtree: false,
  3065.       attributes: false
  3066.     })
  3067.  
  3068.  
  3069.     no_fix_contents_until = 0;
  3070.     no_fix_playlist_until = 0;
  3071.     scriptEnable = true;
  3072.     regularCheck(1, 0, null);
  3073.     
  3074.  
  3075.     
  3076.  
  3077.  
  3078.  
  3079.   }
  3080.  
  3081.  
  3082.   function fetchCommentsFinished() {
  3083.     let ytdFlexyElm = kRef(ytdFlexy);
  3084.     if (!scriptEnable || !ytdFlexyElm) return;
  3085.     if(mtf_forceCheckLiveVideo_disable===2) return;
  3086.     akAttr(ytdFlexyElm, 'tabview-youtube-comments', false, 'LS')
  3087.   }
  3088.  
  3089.   function setCommentSection( /** @type {number} */ value) {
  3090.  
  3091.     Q.comments_section_loaded = value;
  3092.  
  3093.     if (value === 0) {
  3094.       sect_lastUpdate = 0;
  3095.       comments_section_loaded_elm = null;
  3096.     }
  3097.  
  3098.   }
  3099.  
  3100.   function resetCommentSection(){
  3101.     
  3102.  
  3103.     let tab_btn = document.querySelector('.tab-btn[userscript-tab-content="#tab-comments"]')
  3104.  
  3105.  
  3106.     if(tab_btn){
  3107.  
  3108.       let span = querySelectorFromAnchor.call(tab_btn,'span#tab3-txt-loader');
  3109.  
  3110.       tab_btn.removeAttribute('loaded-comment')
  3111.       tab_btn.classList.remove('tab-btn-hidden')
  3112.         
  3113.       if(span){
  3114.         span.textContent='';
  3115.       }
  3116.     }
  3117.  
  3118.  
  3119.     setCommentSection(0);
  3120.  
  3121.  
  3122.   }
  3123.  
  3124.   function _disableComments() {
  3125.     
  3126.     //requestingComments = null;
  3127.     mtc_cid && timeline.clearInterval(mtc_cid)
  3128.     mtc_cid=0;
  3129.  
  3130.     if (!scriptEnable) return;
  3131.     let cssElm = kRef(ytdFlexy);
  3132.     if (!cssElm) return;
  3133.  
  3134.     mtoInterval = mtoInterval2;
  3135.  
  3136.     if(Q.comments_section_loaded>0) return; //already displayed / disabled
  3137.  
  3138.     scheduledCommentRefresh=false;
  3139.     setCommentSection(2);
  3140.  
  3141.     comments_section_loaded_elm = mWeakRef(document.querySelector('ytd-comments#comments div#contents') || null)
  3142.  
  3143.     let tabBtn = document.querySelector('.tab-btn[userscript-tab-content="#tab-comments"]');
  3144.     if(tabBtn) {
  3145.       tabBtn.removeAttribute('loaded-comment')
  3146.       if (!tabBtn.classList.contains('tab-btn-hidden')) {
  3147.         hideTabBtn(tabBtn)
  3148.       }
  3149.     }
  3150.  
  3151.     akAttr(cssElm, 'tabview-youtube-comments', true, 'D');
  3152.  
  3153.  
  3154.   }
  3155.  
  3156.  
  3157.  
  3158.  
  3159.   let layoutStatusMutex = new Mutex();
  3160.  
  3161.   function forceDisplayChatReplay() {
  3162.     let items = chatFrameElement('yt-live-chat-item-list-renderer #items');
  3163.     if (items && items.childElementCount !== 0) return;
  3164.  
  3165.     let ytd_player = document.querySelector('ytd-player#ytd-player');
  3166.     if (!ytd_player) return;
  3167.     let videoElm = querySelectorFromAnchor.call(ytd_player,'video');
  3168.     if (!videoElm) return;
  3169.  
  3170.     let video = videoElm;
  3171.     if (videoElm && video.currentTime > 0 && !video.ended && video.readyState > video.HAVE_CURRENT_DATA) {
  3172.       let chat = document.querySelector('ytd-live-chat-frame#chat');
  3173.       if (chat) {
  3174.         nativeFunc(chat, "postToContentWindow", [{ "yt-player-video-progress": videoElm.currentTime }])
  3175.       }
  3176.     }
  3177.  
  3178.   }
  3179.  
  3180.  
  3181.  
  3182.   function runAfterExpandChat() {
  3183.  
  3184.  
  3185.     if(runAfterExpandChat.cid_chatFrameCheck1) timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck1);
  3186.     if(runAfterExpandChat.cid_chatFrameCheck2) timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck2);
  3187.     runAfterExpandChat.cid_chatFrameCheck1=0;
  3188.     runAfterExpandChat.cid_chatFrameCheck2=0;
  3189.  
  3190.     new Promise(resolve => {
  3191.  
  3192.       let chatFrame_st = Date.now();
  3193.       runAfterExpandChat.cid_chatFrameCheck1 = 0;
  3194.  
  3195.       let sEF = new ScriptEF();
  3196.       runAfterExpandChat.cid_chatFrameCheck1 = timeline.setInterval(() => {
  3197.         if (!sEF.isValid()) return runAfterExpandChat.cid_chatFrameCheck1 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck1);
  3198.         let cDoc = chatFrameContentDocument();
  3199.         if (cDoc) {
  3200.           runAfterExpandChat.cid_chatFrameCheck1 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck1);
  3201.           resolve();
  3202.         } else if (!scriptEnable || !isChatExpand() || Date.now() - chatFrame_st > 6750) {
  3203.           runAfterExpandChat.cid_chatFrameCheck1 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck1);
  3204.         }
  3205.       }, 60);
  3206.  
  3207.  
  3208.     }).then(() => new Promise(resolve => {
  3209.  
  3210.  
  3211.       let chatFrame_st = Date.now();
  3212.       runAfterExpandChat.cid_chatFrameCheck2 = 0;
  3213.  
  3214.       let sEF = new ScriptEF();
  3215.       runAfterExpandChat.cid_chatFrameCheck2 = timeline.setInterval(() => {
  3216.         if (!sEF.isValid()) return runAfterExpandChat.cid_chatFrameCheck2 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck2);
  3217.         let app = chatFrameElement('yt-live-chat-app');
  3218.         if (app) {
  3219.           runAfterExpandChat.cid_chatFrameCheck2 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck2);
  3220.           resolve(app);
  3221.         } else if (!scriptEnable || !isChatExpand() || Date.now() - chatFrame_st > 6750*3) {
  3222.           runAfterExpandChat.cid_chatFrameCheck2 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck2);
  3223.         }
  3224.       }, 60);
  3225.  
  3226.  
  3227.     })).then(app => {
  3228.  
  3229.  
  3230.       let cDoc = app.ownerDocument;
  3231.  
  3232.       if (!scriptEnable || !isChatExpand()) return;
  3233.       if(cDoc.querySelector('#userscript-tabview-chatroom-css')) return;
  3234.       addStyle(`      
  3235.                 body #input-panel.yt-live-chat-renderer::after {
  3236.                     background: transparent;
  3237.                 }
  3238.                 #items.yt-live-chat-item-list-renderer{
  3239.                     contain: content;
  3240.                 }
  3241.                 yt-live-chat-text-message-renderer{
  3242.                     contain: content;
  3243.                 }
  3244.                 #item-offset.yt-live-chat-item-list-renderer{
  3245.                     contain: content;
  3246.                 }
  3247.                 #item-scroller.yt-live-chat-item-list-renderer{
  3248.                     contain: strict;
  3249.                 }
  3250.                 img[width][height]{
  3251.                     contain: strict;
  3252.                 }
  3253.                 #item-list > yt-live-chat-item-list-renderer, #item-list > yt-live-chat-item-list-renderer > #contents{
  3254.                     contain: strict;
  3255.                 }
  3256.  
  3257.  
  3258.                 #chat.style-scope.yt-live-chat-renderer,
  3259.                 yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer,
  3260.                 #item-scroller,
  3261.                 yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer .style-scope.yt-live-chat-text-message-renderer,
  3262.                 yt-live-chat-ticker-paid-message-item-renderer
  3263.                 {
  3264.                   contain: layout paint style;
  3265.                 }
  3266.                  
  3267.                 yt-img-shadow#author-photo.style-scope{
  3268.                   contain: layout paint style;
  3269.                   content-visibility: auto;
  3270.                   contain-intrinsic-size: 24px 24px;
  3271.                 }
  3272.                  
  3273.                 #item-offset.style-scope.yt-live-chat-item-list-renderer,
  3274.                 #items.style-scope.yt-live-chat-item-list-renderer {
  3275.                   contain: layout paint;
  3276.                 }
  3277.                  
  3278.                 .style-scope.yt-live-chat-text-message-renderer {
  3279.                   cursor: default;
  3280.                 }
  3281.                  
  3282.                 #author-photo.style-scope.yt-live-chat-text-message-renderer,
  3283.                 yt-live-chat-author-chip.style-scope.yt-live-chat-text-message-renderer,
  3284.                 yt-live-chat-author-chip.style-scope.yt-live-chat-text-message-renderer ~ span#message.style-scope.yt-live-chat-text-message-renderer
  3285.                 {
  3286.                   pointer-events: none;
  3287.                 }
  3288.                  
  3289.                 span#message.style-scope.yt-live-chat-text-message-renderer > img.emoji.yt-formatted-string.style-scope.yt-live-chat-text-message-renderer{
  3290.                   contain: layout paint style;
  3291.                   cursor: default;
  3292.                   pointer-events: none;
  3293.                 }
  3294.                  
  3295.                 body yt-live-chat-app{
  3296.                   contain: size layout paint style;
  3297.                   content-visibility: auto;
  3298.                   transform: translate3d(0,0,0);
  3299.                   overflow: hidden;
  3300.                 }
  3301.  
  3302.  
  3303.                 /*
  3304.                 yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer:nth-last-of-type(n+20){
  3305.                   content-visibility: auto;
  3306.                 }
  3307.                 */
  3308.  
  3309.                 /*
  3310.                 @supports (contain-intrinsic-size: auto 1px){
  3311.  
  3312.                   yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer{
  3313.                     content-visibility: auto;
  3314.                     contain-intrinsic-size: auto 24px; 
  3315.                   }
  3316.  
  3317.                 }
  3318.                 */
  3319.                  
  3320.                 .style-scope.yt-live-chat-item-list-renderer{
  3321.                   box-sizing: border-box; 
  3322.                 }
  3323.  
  3324.                 /*
  3325.                 .style-scope.yt-live-chat-item-list-renderer[style*="--tabview-crm-height"]{
  3326.                   content-visibility: auto;
  3327.                   contain-intrinsic-size: 1px var(--tabview-crm-height, 24px); 
  3328.                 }
  3329.  
  3330.                 #item-offset.style-scope.yt-live-chat-item-list-renderer{
  3331.                   height: auto !important;
  3332.                 }
  3333.                 #item-offset.style-scope.yt-live-chat-item-list-renderer > #items:only-child{
  3334.                   position: relative !important;
  3335.                 }*/
  3336.  
  3337.                 #item-offset.style-scope.yt-live-chat-item-list-renderer{
  3338.                   contain: size layout paint style;
  3339.                 }
  3340.                 #item-offset.style-scope.yt-live-chat-item-list-renderer > #items:only-child{
  3341.                   contain: layout paint style;
  3342.                 }
  3343.  
  3344.  
  3345.             `, cDoc.documentElement).id='userscript-tabview-chatroom-css'
  3346.  
  3347.             let frc= 0;
  3348.       let fullReady = ()=>{
  3349.  
  3350.  
  3351.         if(!cDoc.documentElement.hasAttribute('style') && ++frc<900) return timeline.setTimeout(fullReady,10);
  3352.  
  3353.         if (cDoc.querySelector('yt-live-chat-renderer #continuations')) {
  3354.           timeline.setTimeout(() => mtf_ChatExist(), 40);
  3355.           $(document.querySelector('ytd-live-chat-frame#chat')).attr('yt-userscript-iframe-loaded', '')
  3356.         }
  3357.  
  3358.         forceDisplayChatReplay();
  3359.  
  3360.         let iframe = document.querySelector('ytd-live-chat-frame iframe#chatframe');
  3361.  
  3362.  
  3363.         iframe.dispatchEvent(new CustomEvent("tabview-chatroom-ready"))
  3364.  
  3365.  
  3366.  
  3367.       }
  3368.       fullReady();
  3369.  
  3370.  
  3371.  
  3372.     })
  3373.  
  3374.   }
  3375.  
  3376.   function flexyAttr_toggleFlag(mFlag, b, flag) {
  3377.     if (b) mFlag = mFlag | flag;
  3378.     else mFlag = mFlag & ~flag;
  3379.     return mFlag;
  3380.   }
  3381.  
  3382.   function flexAttr_toLayoutStatus(nls, attributeName) {
  3383.  
  3384.     let attrElm, b, v;
  3385.     switch (attributeName) {
  3386.       case 'theater':
  3387.         nls = flexyAttr_toggleFlag(nls, isTheater(), LAYOUT_THEATER);
  3388.         break;
  3389.       case 'userscript-chat-collapsed':
  3390.       case 'userscript-chatblock':
  3391.         attrElm = kRef(ytdFlexy);
  3392.         if (hasAttribute(attrElm, 'userscript-chat-collapsed')) {
  3393.           nls = flexyAttr_toggleFlag(nls, true, LAYOUT_CHATROOM | LAYOUT_CHATROOM_COLLASPED);
  3394.         } else {
  3395.           nls = flexyAttr_toggleFlag(nls, hasAttribute(attrElm, 'userscript-chatblock'), LAYOUT_CHATROOM);
  3396.           nls = flexyAttr_toggleFlag(nls, false, LAYOUT_CHATROOM_COLLASPED);
  3397.         }
  3398.         break;
  3399.       case 'is-two-columns_':
  3400.         nls = flexyAttr_toggleFlag(nls, isWideScreenWithTwoColumns(), LAYOUT_TWO_COLUMNS);
  3401.         break;
  3402.  
  3403.       case 'tabview-selection':
  3404.         b = isNonEmptyString(kRef(ytdFlexy).getAttribute('tabview-selection'));
  3405.         nls = flexyAttr_toggleFlag(nls, b, LAYOUT_TAB_EXPANDED);
  3406.         break;
  3407.  
  3408.       case 'fullscreen':
  3409.         b = isNonEmptyString(kRef(ytdFlexy).getAttribute('fullscreen'));
  3410.         nls = flexyAttr_toggleFlag(nls, b, LAYOUT_FULLSCREEN);
  3411.         break;
  3412.  
  3413.       case 'userscript-engagement-panel':
  3414.         v = kRef(ytdFlexy).getAttribute('userscript-engagement-panel');
  3415.         b = (+v > 0)
  3416.         nls = flexyAttr_toggleFlag(nls, b, LAYOUT_ENGAGEMENT_PANEL_EXPAND);
  3417.         break;
  3418.  
  3419.     }
  3420.  
  3421.     return nls;
  3422.  
  3423.  
  3424.   }
  3425.  
  3426.   let mtf_attrFlexy = (mutations, observer) => {
  3427.  
  3428.     //attr mutation checker - $$ytdFlexyElm$$ {ytd-watch-flexy} \single
  3429.     //::attr    
  3430.     // ~ 'userscript-chat-collapsed', 'userscript-chatblock', 'theater', 'is-two-columns_', 
  3431.     // ~ 'tabview-selection', 'fullscreen', 'userscript-engagement-panel', 
  3432.     // ~ 'hidden'
  3433.  
  3434.     //console.log(15330, scriptEnable, kRef(ytdFlexy), mutations)
  3435.  
  3436.     if (!scriptEnable) return;
  3437.  
  3438.     const cssElm = kRef(ytdFlexy)
  3439.     if (!cssElm) return;
  3440.  
  3441.     if (!mutations) return;
  3442.  
  3443.     //console.log(15340)
  3444.     ytdFlexyHiddenCheck(mutations);
  3445.  
  3446.     const old_layoutStatus = wls.layoutStatus
  3447.     if (old_layoutStatus === null) return;
  3448.     let new_layoutStatus = old_layoutStatus;
  3449.  
  3450.     let checkedChat = false;
  3451.  
  3452.     for (const mutation of mutations) {
  3453.       new_layoutStatus = flexAttr_toLayoutStatus(new_layoutStatus, mutation.attributeName);
  3454.       if (mutation.attributeName == 'userscript-chat-collapsed' || mutation.attributeName == 'userscript-chatblock') {
  3455.  
  3456.         if(!checkedChat){
  3457.           checkedChat = true; // avoid double call
  3458.  
  3459.           if (cssElm.getAttribute('userscript-chatblock') === 'chat-live') {
  3460.             // assigned new attribute - "chat-live" => disable comments section
  3461.             _disableComments();
  3462.           }
  3463.  
  3464.           if (!cssElm.hasAttribute('userscript-chatblock')) {
  3465.             // might or might not collapsed before
  3466.             timeline.setTimeout(() => {
  3467.               if (!scriptEnable) return;
  3468.               //delayed call => check with the "no active focus" condition with chatroom status
  3469.               if (!isAnyActiveTab() && !isChatExpand() && !isTheater() && isWideScreenWithTwoColumns() && !isFullScreen()) {
  3470.                 setToActiveTab();
  3471.               }
  3472.             }, 240);
  3473.           }
  3474.         }
  3475.  
  3476.       }else if(mutation.attributeName == 'userscript-engagement-panel'){
  3477.         // assume any other active component such as tab content and chatroom
  3478.         
  3479.         if (+(cssElm.getAttribute('userscript-engagement-panel')||0)===0 && +mutation.oldValue>0) {
  3480.           timeline.setTimeout(() => {
  3481.             if (!scriptEnable) return;
  3482.             //delayed call => check with the "no active focus" condition with engagement panel status
  3483.             if (!isAnyActiveTab() && !isEngagementPanelExpanded() && !isTheater() && isWideScreenWithTwoColumns() && !isFullScreen() && !isChatExpand()) {
  3484.               setToActiveTab();
  3485.             }
  3486.           }, 240);
  3487.         }
  3488.       }
  3489.     }
  3490.  
  3491.     if (new_layoutStatus !== old_layoutStatus) wls.layoutStatus = new_layoutStatus
  3492.  
  3493.   }
  3494.  
  3495.   const mtf_checkFlexy = () => {
  3496.     // once per $$native-ytd-watch-flexy$$ {ytd-watch-flexy} detection
  3497.  
  3498.     let ytdFlexyElm = kRef(ytdFlexy);
  3499.     if (!scriptEnable || !ytdFlexyElm) return true;
  3500.  
  3501.  
  3502.     wls.layoutStatus = null;
  3503.  
  3504.     let isFlexyHidden = (deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden'));
  3505.  
  3506.     if (!isFlexyHidden) {
  3507.       let rChatExist = base_ChatExist();
  3508.       if (rChatExist) {
  3509.         let { attr_chatblock, attr_chatcollapsed } = rChatExist;
  3510.         if (attr_chatblock === null) {
  3511.           //remove attribute if it is unknown
  3512.           attr_chatblock = false;
  3513.           attr_chatcollapsed = false;
  3514.         }
  3515.         wAttr(ytdFlexyElm, 'userscript-chatblock', attr_chatblock)
  3516.         wAttr(ytdFlexyElm, 'userscript-chat-collapsed', attr_chatcollapsed)
  3517.       }
  3518.     }
  3519.  
  3520.     let rTabSelection = [...querySelectorAllFromAnchor.call(ytdFlexyElm,'.tab-btn[userscript-tab-content]')]
  3521.       .map(elm => ({ elm, hidden: elm.classList.contains('tab-btn-hidden') }));
  3522.  
  3523.     if(rTabSelection.length === 0){
  3524.       wAttr(ytdFlexyElm, 'tabview-selection', false);
  3525.     }else{
  3526.       rTabSelection=rTabSelection.filter(entry => entry.hidden !== true); // all available tabs
  3527.       if (rTabSelection.length === 0) wAttr(ytdFlexyElm, 'tabview-selection', '');
  3528.     }
  3529.     rTabSelection = null;
  3530.       
  3531.     let rEP = engagement_panels_();
  3532.     if (rEP && rEP.count > 0) wAttr(ytdFlexyElm, 'userscript-engagement-panel', false);
  3533.     //else wAttr(ytdFlexyElm, 'userscript-engagement-panel', rEP.value + ""); // can be 0
  3534.     else if(rEP.value>0) wAttr(ytdFlexyElm, 'userscript-engagement-panel', rEP.value + ""); // can be 0
  3535.  
  3536.     let ls = 0;
  3537.     ls = flexAttr_toLayoutStatus(ls, 'theater')
  3538.     ls = flexAttr_toLayoutStatus(ls, 'userscript-chat-collapsed')
  3539.     ls = flexAttr_toLayoutStatus(ls, 'userscript-chatblock')
  3540.     ls = flexAttr_toLayoutStatus(ls, 'is-two-columns_')
  3541.     ls = flexAttr_toLayoutStatus(ls, 'tabview-selection')
  3542.     ls = flexAttr_toLayoutStatus(ls, 'fullscreen')
  3543.     ls = flexAttr_toLayoutStatus(ls, 'userscript-engagement-panel')
  3544.  
  3545.     wls.layoutStatus = ls
  3546.  
  3547.     mtoFlexyAttr.bindElement(ytdFlexyElm,{
  3548.       attributes: true,
  3549.       attributeFilter: ['userscript-chat-collapsed', 'userscript-chatblock', 'theater', 'is-two-columns_', 'tabview-selection', 'fullscreen', 'userscript-engagement-panel', 'hidden'],
  3550.       attributeOldValue: true
  3551.     })
  3552.  
  3553.     ytdFlexyHiddenCheckBasic(ytdFlexyElm);
  3554.  
  3555.  
  3556.     let columns = document.querySelector('ytd-page-manager#page-manager #columns')
  3557.     if (columns) {
  3558.       wAttr(columns, 'userscript-scrollbar-render', true);
  3559.     }
  3560.  
  3561.     return false;
  3562.   }
  3563.   
  3564.  
  3565.   function ytdFlexyHiddenCheckBasic(ytdFlexyElm){
  3566.     // for both hidden and non-hidden ytd-watch-flexy
  3567.  
  3568.     deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden');
  3569.  
  3570.    // console.log(15403)
  3571.     document.documentElement.classList.toggle('tabview-normal-player',!deferredVarYTDHidden)
  3572.  
  3573.   }
  3574.  
  3575.   function checkVisibleEngagementPanel(){
  3576.     
  3577.     if(storeLastPanel){
  3578.  
  3579.       let elm_storeLastPanel = kRef(storeLastPanel);
  3580.  
  3581.       if(elm_storeLastPanel && !isDOMVisible(elm_storeLastPanel) ){
  3582.         storeLastPanel=null;
  3583.         ytBtnCloseEngagementPanels();
  3584.       }
  3585.  
  3586.     }
  3587.  
  3588.   }
  3589.  
  3590.   function ytdFlexyHiddenCheck(mutations) {
  3591.  
  3592.     //console.log(15350)
  3593.  
  3594.     const ytdFlexyElm = kRef(ytdFlexy)
  3595.     if (!ytdFlexyElm) return;
  3596.     let muHidden = false
  3597.  
  3598.     for (const mutation of mutations) {
  3599.       if (mutation.attributeName === 'hidden') {
  3600.         //console.log(343)
  3601.         muHidden = true;
  3602.         break;
  3603.       }
  3604.     }
  3605.  
  3606.     if (!muHidden) return;
  3607.     
  3608.  
  3609.     
  3610.     mtc_store= Date.now()+2870
  3611.     //console.log(7004)
  3612.     deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden');
  3613.  
  3614.     
  3615.     if(deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0){
  3616.       scheduledCommentRefresh=false;
  3617.     } 
  3618.  
  3619.     //console.log(15400)
  3620.     if(!deferredVarYTDHidden){
  3621.       mtf_forceCheckLiveVideo_disable = 0  
  3622.       timeline.setTimeout(function() {
  3623.         mtf_ChatExist();  
  3624.         layoutStatusMutex.lockWith(unlock=>{
  3625.           atChange(); // in case no mutation occurance
  3626.           ytdFlexyHiddenCheckBasic(ytdFlexyElm);
  3627.           dispatchWindowResize(); // player control positioning
  3628.           timeline.setTimeout(unlock, 40);          
  3629.         })        
  3630.       }, 40);
  3631.     }else{
  3632.       //console.log(15401)
  3633.       timeline.setTimeout(function() {
  3634.         //console.log(15402)
  3635.         ytdFlexyHiddenCheckBasic(ytdFlexyElm);
  3636.       }, 40);
  3637.     }
  3638.  
  3639.   }
  3640.  
  3641.  
  3642.  
  3643.  
  3644.   let switchTabActivity_lastTab = null
  3645.  
  3646.   function setDisplayedPlaylist() {
  3647.     //override the default youtube coding event prevention
  3648.     let cssElm = kRef(ytdFlexy);
  3649.     if (!scriptEnable || !cssElm) return;
  3650.     displayedPlaylist = mWeakRef(document.querySelector('ytd-watch-flexy #tab-list:not(.tab-content-hidden) ytd-playlist-panel-renderer') || null);
  3651.   }
  3652.  
  3653.  
  3654.   
  3655.   let recordScrollTop = 0
  3656.  
  3657.   function switchTabActivity(activeLink) {
  3658.     if (!scriptEnable) return;
  3659.  
  3660.     const ytdFlexyElm = kRef(ytdFlexy);
  3661.  
  3662.     if (!ytdFlexyElm) return;
  3663.  
  3664.     if (activeLink && activeLink.classList.contains('tab-btn-hidden')) return; // not allow to switch to hide tab
  3665.  
  3666.     if (isTheater() && isWideScreenWithTwoColumns()) activeLink = null;
  3667.  
  3668.     /*
  3669.     let isPrevTabComments = document.querySelector('.tab-content-cld:not(.tab-content-hidden)');
  3670.     isPrevTabComments=isPrevTabComments&&isPrevTabComments.matches('#tab-comments')
  3671.  
  3672.     if(isPrevTabComments){
  3673.     
  3674.       let comments_tab = document.querySelector('#tab-comments');
  3675.       if(comments_tab){
  3676.         let st = comments_tab.scrollTop;
  3677.         if(st>=0) recordScrollTop = st;
  3678.       }
  3679.  
  3680.  
  3681.     }
  3682.     */
  3683.  
  3684.     function runAtEnd() {
  3685.  
  3686.       
  3687.     //console.log(12312)
  3688.  
  3689.       if (activeLink) lastShowTab = activeLink.getAttribute('userscript-tab-content')
  3690.  
  3691.       displayedPlaylist = null;
  3692.       scrollingVideosList = null;
  3693.  
  3694.       if (activeLink && lastShowTab == '#tab-list') {
  3695.         setDisplayedPlaylist();
  3696.       } else if (activeLink && lastShowTab == '#tab-videos') {
  3697.         scrollingVideosList = mWeakRef(document.querySelector('ytd-watch-flexy #tab-videos:not(.tab-content-hidden) [placeholder-videos]'));
  3698.       }
  3699.  
  3700.  
  3701.       ytdFlexyElm.setAttribute('tabview-selection', activeLink ? lastShowTab : '')
  3702.  
  3703.       if (lastShowTab == '#tab-comments' && (ytdFlexyElm.getAttribute('tabview-youtube-comments') || '').lastIndexOf('S') >= 0) {
  3704.  
  3705.         
  3706.         if(mtf_forceCheckLiveVideo_disable===2) {}
  3707.         else{
  3708.           akAttr(ytdFlexyElm, 'tabview-youtube-comments', false, 'L');
  3709.  
  3710.           /*
  3711.           requestAnimationFrame(() => {
  3712.             let comments_tab = document.querySelector('#tab-comments');
  3713.             if (comments_tab && comments_tab.scrollTop > 0) comments_tab.scrollTop = 0;
  3714.           });
  3715.           */
  3716.         }
  3717.  
  3718.       }
  3719.  
  3720.       /*
  3721.     let isNewTabComments = document.querySelector('.tab-content-cld:not(.tab-content-hidden)')
  3722.     
  3723.     isNewTabComments=isNewTabComments&&isNewTabComments.matches('#tab-comments')
  3724.  
  3725.     if(isNewTabComments){
  3726.       
  3727.       let comments_tab = document.querySelector('#tab-comments');
  3728.       if(comments_tab){
  3729.         let st = comments_tab.scrollTop;
  3730.         if(Math.abs(st-recordScrollTop)>0.9) comments_tab.scrollTop=recordScrollTop;
  3731.       }
  3732.  
  3733.       
  3734.       
  3735.     }
  3736.     */
  3737.  
  3738.  
  3739.     }
  3740.  
  3741.     const links = document.querySelectorAll('#material-tabs a[userscript-tab-content]');
  3742.  
  3743.  
  3744.  
  3745.     for (const link of links) {
  3746.       let content = document.querySelector(link.getAttribute('userscript-tab-content'));
  3747.       if (link && content) {
  3748.         if (link !== activeLink) {
  3749.           link.classList.remove("active");
  3750.           content.classList.add("tab-content-hidden");
  3751.         } else {
  3752.           link.classList.add("active");
  3753.           content.classList.remove("tab-content-hidden");
  3754.           //timeline.setTimeout(()=>content.focus(),400);
  3755.  
  3756.         }
  3757.       }
  3758.     }
  3759.  
  3760.     runAtEnd();
  3761.  
  3762.  
  3763.   }
  3764.  
  3765.  
  3766.   const STORE_VERSION = 1;
  3767.   const STORE_key = 'userscript-tabview-settings';
  3768.   function getStore(){
  3769.     let s = localStorage[STORE_key];
  3770.     function resetStore(){
  3771.       let ret = {
  3772.         version: 1,
  3773.       };
  3774.       localStorage[STORE_key]=JSON.stringify(ret);
  3775.       return ret;
  3776.     }
  3777.     if(!s) return resetStore();
  3778.     let obj = null;
  3779.     try{
  3780.       obj = JSON.parse(s);
  3781.     }catch(e){}
  3782.     return obj && obj.version === STORE_VERSION ? obj : resetStore();
  3783.   }
  3784.  
  3785.   function setStore(obj){
  3786.     if(!obj || typeof obj !=='object') return false;
  3787.     if(obj.version !== STORE_VERSION) return false;
  3788.     localStorage[STORE_key]=JSON.stringify(obj);
  3789.     return true;
  3790.   }
  3791.  
  3792.   let tabsUiScript_setclick = false;
  3793.  
  3794.   function prepareTabBtn() {
  3795.  
  3796.     const materialTab = document.querySelector("#material-tabs")
  3797.     if (!materialTab) return;
  3798.  
  3799.     let noActiveTab = !!document.querySelector('ytd-watch-flexy[userscript-chatblock]:not([userscript-chat-collapsed])')
  3800.  
  3801.     const activeLink = querySelectorFromAnchor.call(materialTab,'a[userscript-tab-content].active:not(.tab-btn-hidden)')
  3802.     if (activeLink) switchTabActivity(noActiveTab ? null : activeLink)
  3803.  
  3804.     if (!tabsUiScript_setclick) {
  3805.       tabsUiScript_setclick = true;
  3806.       $(materialTab).on("click", "a", function(evt) {
  3807.  
  3808.         //console.log(8510)
  3809.         let ytdFlexyElm = kRef(ytdFlexy);
  3810.         if (!scriptEnable || !ytdFlexyElm) return null;
  3811.  
  3812.         if (!this.hasAttribute('userscript-tab-content')) return;
  3813.  
  3814.         if (evt.target.matches('.font-size-btn')) return;
  3815.  
  3816.  
  3817.         evt.preventDefault();
  3818.  
  3819.         //console.log(8511)
  3820.  
  3821. /*
  3822.         if (this.getAttribute('userscript-tab-content') == '#tab-comments' && parseInt(ytdFlexyElm.getAttribute('tabview-youtube-comments') || '') < 0) {
  3823.           
  3824.         console.log(8512)
  3825.           return;
  3826.         }*/
  3827.  
  3828.         //console.log(8513)
  3829.         new Promise(requestAnimationFrame).then(() => {
  3830.  
  3831.  
  3832.           //console.log(8514)
  3833.           layoutStatusMutex.lockWith(unlock => {
  3834.  
  3835.             //console.log(8515)
  3836.             switchTabActivity_lastTab = this.getAttribute('userscript-tab-content');
  3837.  
  3838.             let isActiveAndVisible = this.classList.contains('tab-btn') && this.classList.contains('active') && !this.classList.contains('tab-btn-hidden')
  3839.  
  3840.             if (isWideScreenWithTwoColumns() && !isTheater() && isActiveAndVisible) {
  3841.               //optional
  3842.               timeline.setTimeout(unlock, 80);
  3843.               switchTabActivity(null);
  3844.               ytBtnSetTheater();
  3845.             } else if (isActiveAndVisible) {
  3846.               timeline.setTimeout(unlock, 80);
  3847.               switchTabActivity(null);
  3848.             } else {
  3849.               let pInterval = 60;
  3850.               if (isChatExpand() && isWideScreenWithTwoColumns()) {
  3851.                 ytBtnCollapseChat();
  3852.               } else if (isEngagementPanelExpanded() && isWideScreenWithTwoColumns()) {
  3853.                 ytBtnCloseEngagementPanels();
  3854.               } else if (isWideScreenWithTwoColumns() && isTheater() && !isFullScreen()) {
  3855.                 ytBtnCancelTheater();
  3856.               } else {
  3857.                 pInterval = 20;
  3858.               }
  3859.               //console.log(8518)
  3860.               timeline.setTimeout(() => {
  3861.                 timeline.setTimeout(makeBodyScroll, 20); // this is to make the image render
  3862.  
  3863.                 timeline.setTimeout(() => {
  3864.                   let rightTabs = document.querySelector('#right-tabs');
  3865.                   if (!isWideScreenWithTwoColumns() && rightTabs && rightTabs.offsetTop > 0 && this.classList.contains('active')) {
  3866.                     let tabButtonBar = document.querySelector('#material-tabs');
  3867.                     let tabButtonBarHeight = tabButtonBar ? tabButtonBar.offsetHeight : 0;
  3868.                     window.scrollTo(0, rightTabs.offsetTop - tabButtonBarHeight);
  3869.                   }
  3870.                 }, 60)
  3871.                // console.log(8519)
  3872.  
  3873.                 timeline.setTimeout(unlock, 80)
  3874.                 switchTabActivity(this)
  3875.  
  3876.               }, pInterval);
  3877.             }
  3878.  
  3879.  
  3880.           })
  3881.  
  3882.         })
  3883.  
  3884.  
  3885.  
  3886.  
  3887.       });
  3888.       /*
  3889.  
  3890.       $(materialTab).on("mousedown", ".font-size-btn", function(evt){
  3891.  
  3892.         evt.stopPropagation();
  3893.         evt.stopImmediatePropagation();
  3894.  
  3895.       });
  3896.  
  3897.       $(materialTab).on("pointerdown", ".font-size-btn", function(evt){
  3898.  
  3899.         evt.stopPropagation();
  3900.         evt.stopImmediatePropagation();
  3901.  
  3902.       });
  3903.       
  3904.       $(materialTab).on("mouseup", ".font-size-btn", function(evt){
  3905.  
  3906.         evt.stopPropagation();
  3907.         evt.stopImmediatePropagation();
  3908.  
  3909.       });
  3910.  
  3911.       $(materialTab).on("pointerup", ".font-size-btn", function(evt){
  3912.  
  3913.         evt.stopPropagation();
  3914.         evt.stopImmediatePropagation();
  3915.  
  3916.       });
  3917.       */
  3918.  
  3919.       function updateCSS_fontsize(){
  3920.  
  3921.         let store = getStore();
  3922.         
  3923.         let ytdFlexyElm = kRef(ytdFlexy);
  3924.         if(ytdFlexyElm){
  3925.           if(store['font-size-#tab-info'])
  3926.           ytdFlexyElm.style.setProperty('--ut2257-info', store['font-size-#tab-info'])
  3927.           if(store['font-size-#tab-comments'])
  3928.           ytdFlexyElm.style.setProperty('--ut2257-comments', store['font-size-#tab-comments'])
  3929.           if(store['font-size-#tab-videos'])
  3930.           ytdFlexyElm.style.setProperty('--ut2257-videos', store['font-size-#tab-videos'])
  3931.           if(store['font-size-#tab-list'])
  3932.           ytdFlexyElm.style.setProperty('--ut2257-list', store['font-size-#tab-list'])
  3933.         }
  3934.  
  3935.       }
  3936.  
  3937.       $(materialTab).on("click", ".font-size-btn", function(evt){
  3938.  
  3939.         evt.preventDefault();
  3940.         evt.stopPropagation();
  3941.         evt.stopImmediatePropagation();
  3942.  
  3943.         let value = evt.target.matches('.font-size-plus')?1: evt.target.matches('.font-size-minus')?-1 :0;
  3944.  
  3945.         let active_tab_content = closestDOM.call(evt.target,'[userscript-tab-content]').getAttribute('userscript-tab-content'); 
  3946.  
  3947.         let store = getStore();
  3948.         let settingKey = `font-size-${active_tab_content}`
  3949.         if(!store[settingKey]) store[settingKey] = 1.0;
  3950.         if(value<0) store[settingKey] -= 0.05;
  3951.         else if(value>0) store[settingKey] += 0.05;
  3952.         if(store[settingKey]<0.1) store[settingKey] = 0.1;
  3953.         else if(store[settingKey]>10) store[settingKey] = 10.0;
  3954.         setStore(store);
  3955.  
  3956.  
  3957.         updateCSS_fontsize();
  3958.  
  3959.  
  3960.         //console.log(this.textContent)
  3961.  
  3962.  
  3963.       });
  3964.  
  3965.       updateCSS_fontsize();
  3966.  
  3967.  
  3968.  
  3969.     }
  3970.  
  3971.   }
  3972.  
  3973.  
  3974.   // ---------------------------------------------------------------------------------------------
  3975.   document.addEventListener("yt-navigate-finish", onNavigationEnd)
  3976.   //yt-navigate-redirect
  3977.   //"yt-page-data-fetched"
  3978.   //yt-navigate-error
  3979.   //yt-navigate-start
  3980.   //yt-page-manager-navigate-start
  3981.   //"yt-navigate"
  3982.   //"yt-navigate-cache
  3983.  
  3984.   document.addEventListener("yt-navigate-cache",()=>{
  3985.     console.log('yt-navigate-cache')
  3986.   })
  3987.   document.addEventListener("yt-navigate-redirect",()=>{
  3988.     console.log('yt-navigate-redirect')
  3989.   })
  3990.  
  3991.   function onReady(){
  3992.     //might be earlier than yt-navigation-finish
  3993.     console.log('html-onReady')
  3994.     if(location.pathname=='/watch') script_inject_js1.inject();
  3995.   }
  3996.  
  3997.   if(document.readyState!=='loading'){
  3998.     onReady();
  3999.   }else{
  4000.     document.addEventListener('DOMContentLoaded', onReady)
  4001.   }
  4002.  
  4003.   function forceConfig(){
  4004.     
  4005.     let trial = false;
  4006.     
  4007. /*
  4008.     let f=()=>{
  4009.       if(trial) return;
  4010.       let b = true;
  4011.       try{
  4012.         document.dispatchEvent(new CustomEvent("me-func"))
  4013.         window.yt.config_.EXPERIMENT_FLAGS.kevlar_watch_metadata_refresh=true
  4014.       }catch(e){
  4015.         b=false;
  4016.       }
  4017.       if(b) trial = true;
  4018.     }
  4019.     f();
  4020.     requestAnimationFrame(f)
  4021.     setTimeout(f,30)
  4022.     setTimeout(f,300)
  4023. */
  4024.     
  4025.     
  4026.   }
  4027.  
  4028.   document.addEventListener("yt-navigate-start",()=>{
  4029.     console.log('yt-navigate-start') // not always trigger before navigate-end
  4030.     
  4031.     no_fix_contents_until = 0;
  4032.     no_fix_playlist_until = 0;
  4033.  
  4034.     script_inject_js1.inject();
  4035.     forceConfig();
  4036.   })
  4037.  
  4038.   document.addEventListener("yt-page-manager-navigate-start",()=>{
  4039.     console.log('yt-page-manager-navigate-start')
  4040.     forceConfig();
  4041.   })
  4042.  
  4043.  
  4044.   document.addEventListener("loadstart", (evt) => {
  4045.     if (!evt || !evt.target || evt.target.nodeName !== "VIDEO") return;
  4046.     let elm = evt.target;
  4047.     if (!elm.matches('#player video, #movie_player video, video[tabview-mainvideo]')) return;
  4048.  
  4049.     
  4050.     mtc_store= Date.now()+2870
  4051.  
  4052.     let src = elm.src;
  4053.     if (src !== lastVideoURL) {
  4054.       lastVideoURL = elm.src;
  4055.       elm.setAttribute('tabview-mainvideo', ''); // mainly for mini playing
  4056.       
  4057.       no_fix_contents_until = 0;
  4058.       no_fix_playlist_until = 0;
  4059.       regularCheck(1,0,null); // mutation happens when the page is not ready; call again as the page is ready.
  4060.  
  4061.     }
  4062.  
  4063.   }, true)
  4064.  
  4065.   // ---------------------------------------------------------------------------------------------
  4066.  
  4067.   let scrolling_lastD = 0;
  4068.  
  4069.   const singleColumnScrolling = function(/** @type {boolean} */  scrolling_lastF) {
  4070.     
  4071.     if (!scriptEnable || deferredVarYTDHidden) return;
  4072.  
  4073.     let pageY = scrollY;
  4074.     if (pageY < 10 && scrolling_lastD === 0 && !scrolling_lastF) return;
  4075.  
  4076.     let targetElm, header, navElm;
  4077.  
  4078.     Promise.resolve().then(() => {
  4079.  
  4080.       targetElm = document.querySelector("#right-tabs");
  4081.       if (!targetElm) return;
  4082.       header = querySelectorFromAnchor.call(targetElm,"header");
  4083.       if (!header) return;
  4084.       navElm = document.querySelector('#masthead-container, #masthead')
  4085.       if (!navElm) return;
  4086.       let navHeight = navElm ? navElm.offsetHeight : 0
  4087.  
  4088.       let elmY = targetElm.offsetTop
  4089.  
  4090.       let xyz = [elmY + navHeight, pageY, elmY - navHeight]
  4091.  
  4092.       let xyStatus = 0
  4093.       if (xyz[1] < xyz[2] && xyz[2] < xyz[0]) {
  4094.         // 1
  4095.         xyStatus = 1
  4096.       }
  4097.  
  4098.       if (xyz[0] > xyz[1] && xyz[1] > xyz[2]) {
  4099.  
  4100.         //2
  4101.         xyStatus = 2
  4102.  
  4103.       }
  4104.  
  4105.       if (xyz[2] < xyz[0] && xyz[0] < xyz[1]) {
  4106.         // 3
  4107.  
  4108.         xyStatus = 3
  4109.  
  4110.  
  4111.       }
  4112.  
  4113.       return xyStatus;
  4114.  
  4115.     }).then((xyStatus) => {
  4116.  
  4117.       if ((xyStatus == 2 || xyStatus == 3) && (scrolling_lastD === 0 || scrolling_lastF)) {
  4118.         scrolling_lastD = 1;
  4119.         let {
  4120.           offsetHeight
  4121.         } = header
  4122.         let {
  4123.           offsetWidth
  4124.         } = targetElm
  4125.  
  4126.         targetElm.style.setProperty("--userscript-sticky-width", offsetWidth + 'px')
  4127.         targetElm.style.setProperty("--userscript-sticky", offsetHeight + 'px')
  4128.  
  4129.         wAttr(targetElm, 'userscript-sticky', true);
  4130.  
  4131.       } else if ((xyStatus == 1) && (scrolling_lastD === 1 || scrolling_lastF)) {
  4132.         scrolling_lastD = 0;
  4133.  
  4134.         wAttr(targetElm, 'userscript-sticky', false);
  4135.       }
  4136.  
  4137.  
  4138.       targetElm = null;
  4139.       header = null;
  4140.       navElm = null;
  4141.  
  4142.     });
  4143.  
  4144.   };
  4145.  
  4146.   window.addEventListener("scroll", function() {
  4147.     singleColumnScrolling(false)
  4148.   }, {
  4149.     capture: false,
  4150.     passive: true
  4151.   })
  4152.  
  4153.   let lastResizeAt = 0;
  4154.   window.addEventListener('resize', function() {
  4155.  
  4156.     if (!scriptEnable) return;
  4157.     if (deferredVarYTDHidden) return;
  4158.     lastResizeAt = Date.now();
  4159.  
  4160.     requestAnimationFrame(() => {
  4161.       singleColumnScrolling(true)
  4162.     })
  4163.  
  4164.   }, {
  4165.     capture: false,
  4166.     passive: true
  4167.   })
  4168.  
  4169.  
  4170.  
  4171.   
  4172.   let hist = null
  4173.   const getHistState = (history)=>`${history.length}|${history.state?history.state.entryTime:null}`;
  4174.   function newVideoPageCheck(){
  4175.     let hState = getHistState(history)
  4176.     if(hist!==hState) {
  4177.       hist=hState;
  4178.       if(scriptEnable){
  4179.         //scriptEnable = false;
  4180.         let callTimeout = !newVideoPage.entryTime
  4181.         newVideoPage.entryTime = 1
  4182.         if(callTimeout) setTimeout(newVideoPage,0)
  4183.         
  4184.       }
  4185.       return true;
  4186.     }
  4187.   }
  4188.   function newVideoPage(){
  4189.     newVideoPage.entryTime = 0;
  4190.  
  4191.     console.log('newVideoPage')
  4192.     
  4193.     
  4194.     //console.log('newVideoPage-', 150, location.href)
  4195.  
  4196.     let ytdFlexyElm = kRef(ytdFlexy);
  4197.     if(!ytdFlexyElm) return;
  4198.  
  4199.     timeline.reset();
  4200.     layoutStatusMutex = new Mutex();
  4201.  
  4202.     //console.log('newVideoPage-', 350, location.href)
  4203.     
  4204.     let flag1= /^https?\:\/\/(\w+\.)*youtube\.com\/watch\?(\w+\=[^\/\?\&]+\&|\w+\=?\&)*v=[\w\-\_]+/.test(location.href)
  4205.     let tf = ()=>{
  4206.  
  4207.       let isFlexyHidden = (deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden'));
  4208.  
  4209.       let flag2 = !isFlexyHidden;
  4210.  
  4211.       if(flag1^flag2) return timeline.setTimeout(tf,7); else funcVisibleWatch();
  4212.  
  4213.       tf= null;
  4214.       funcVisibleWatch = null;
  4215.       ytdFlexyElm=null
  4216.  
  4217.     }
  4218.  
  4219.     let funcVisibleWatch = ()=>{
  4220.       
  4221.       //scriptEnable = true;
  4222.  
  4223.       let isFlexyHidden = (deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden'));
  4224.       ytdFlexyHiddenCheckBasic(ytdFlexyElm)
  4225.  
  4226.       if(!isFlexyHidden) {
  4227.  
  4228.         mtf_forceCheckLiveVideo_disable = 0;
  4229.         mtc_store= Date.now()+2870
  4230.  
  4231.         sect_lastUpdate = 0;
  4232.         if(pendingOne){
  4233.           // reset pendingOne = false if the element is already removed.
  4234.           pendingOne = document.querySelectorAll(`ytd-watch-flexy ytd-comments#comments [tabview-cache-time]`).length>1;
  4235.         }
  4236.  
  4237.         timeline.setTimeout(()=>{
  4238.           Q.mutationTarget=null;
  4239.           FP.mtf_attrComments()
  4240.         },2870)
  4241.     
  4242.         if(pageInit_attrComments) hookSection();
  4243.  
  4244.  
  4245.  
  4246.  
  4247.  
  4248.         
  4249.         let new_layoutStatus = wls.layoutStatus 
  4250.  
  4251.         const new_isExpandedChat = !(new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  4252.         const new_isCollaspedChat = (new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  4253.     
  4254.         const new_isTwoColumns = new_layoutStatus & LAYOUT_TWO_COLUMNS;
  4255.         const new_isTheater = new_layoutStatus & LAYOUT_THEATER;
  4256.         const new_isTabExpanded = new_layoutStatus & LAYOUT_TAB_EXPANDED;
  4257.         const new_isFullScreen = new_layoutStatus & LAYOUT_FULLSCREEN;
  4258.         const new_isExpandEPanel = new_layoutStatus & LAYOUT_ENGAGEMENT_PANEL_EXPAND;
  4259.  
  4260.         if( ytdFlexyElm.getAttribute('tabview-selection')==='' && new_isTwoColumns && !new_isTheater && !new_isTabExpanded && !new_isFullScreen && !new_isExpandEPanel && !new_isExpandedChat ){
  4261.           // e.g. engage panel removed after miniview and change video
  4262.           setToActiveTab();
  4263.         }else if(new_isExpandEPanel && querySelectorAllFromAnchor.call(ytdFlexyElm,'ytd-engagement-panel-section-list-renderer[visibility="ENGAGEMENT_PANEL_VISIBILITY_EXPANDED"]').length===0){
  4264.           wls.layoutStatus = new_layoutStatus & (~LAYOUT_ENGAGEMENT_PANEL_EXPAND)
  4265.         }
  4266.  
  4267.         //mtf_attrFlexy();
  4268.  
  4269.         FP.mtf_attrEngagementPanel();
  4270.       
  4271.         FP.mtf_attrPlaylist();
  4272.       
  4273.         FP.mtf_attrComments();   
  4274.       
  4275.         FP.mtf_attrChatroom();
  4276.  
  4277.  
  4278.       }
  4279.  
  4280.       no_fix_contents_until = 0;
  4281.       no_fix_playlist_until = 0;
  4282.       scriptEnable = true;
  4283.       regularCheck(1,0,null); // mutation happens when the page is not ready; call again as the page is ready.
  4284.  
  4285.  
  4286.  
  4287.       
  4288.  
  4289.     }
  4290.     
  4291.  
  4292.     
  4293.     tf();
  4294.     
  4295.  
  4296.  
  4297.   }
  4298.  
  4299.  
  4300.  
  4301.   function browserHistoryState(){
  4302.     let maxCount = 5
  4303.  
  4304.     if (!scriptEnable) return;
  4305.     
  4306.     let ytdFlexyElm = kRef(ytdFlexy);
  4307.     if(!ytdFlexyElm) return;
  4308.  
  4309.     let cid = timeline.setInterval(function(){
  4310.       if(newVideoPageCheck()){
  4311.         timeline.clearInterval(cid);
  4312.       }
  4313.       if(--maxCount===0) timeline.clearInterval(cid);
  4314.     },7)
  4315.  
  4316.   }
  4317.  
  4318.  
  4319.   window.addEventListener('hashchange', function() {
  4320.     if (!scriptEnable) return;
  4321.     console.log('hashchange');
  4322.     browserHistoryState();
  4323.   }, { capture: true })
  4324.  
  4325.   window.addEventListener('popstate', function() {
  4326.     if (!scriptEnable) return;
  4327.     console.log('popstate');
  4328.     browserHistoryState();
  4329.   }, { capture: true })
  4330.  
  4331.  
  4332.   // function clearMutationObserver(o, key) {
  4333.   //   if (o[key]) {
  4334.   //     o[key].takeRecords();
  4335.   //     o[key].disconnect();
  4336.   //     o[key] = null;
  4337.   //     return true;
  4338.   //   }
  4339.   // }
  4340.  
  4341.   // function initMutationObserver(o, key, callback) {
  4342.   //   clearMutationObserver(o, key);
  4343.   //   const mto = new MutationObserver(callback);
  4344.   //   o[key] = mto;
  4345.   //   return mto;
  4346.   // }
  4347.   // function initMutationObserver2(o, key, mtoFunc) {
  4348.   //   clearMutationObserver(o, key);
  4349.   //   const mto = mtoFunc();
  4350.   //   o[key] = mto;
  4351.   //   return mto;
  4352.   // }
  4353.  
  4354.   document.addEventListener('wheel', function(evt) {
  4355.  
  4356.     if (!scriptEnable) return;
  4357.     const displayedPlaylist_element = kRef(displayedPlaylist);
  4358.     if (displayedPlaylist_element && displayedPlaylist_element.contains(evt.target)) {
  4359.       evt.stopPropagation();
  4360.       evt.stopImmediatePropagation();
  4361.     }
  4362.   }, { capture: true, passive: true });
  4363.  
  4364.  
  4365.   function setVideosTwoColumns(/** @type {number} */ flag, /** @type {boolean} */ bool) {
  4366.  
  4367.     //two columns to one column
  4368.  
  4369.     /*
  4370.         [placeholder-videos] ytd-watch-next-secondary-results-renderer.style-scope.ytd-watch-flexy
  4371.  
  4372.         is-two-columns =""  => no is-two-columns
  4373.         
  4374.         
  4375.         
  4376.         [placeholder-videos] tp-yt-paper-spinner#spinner.style-scope.ytd-continuation-item-renderer
  4377.         
  4378.         no hidden => hidden =""
  4379.         
  4380.         
  4381.         [placeholder-videos] div#button.style-scope.ytd-continuation-item-renderer
  4382.         
  4383.         
  4384.         hidden ="" => no hidden
  4385.         
  4386.  
  4387.         */
  4388.  
  4389.     let cssSelector1 = '[placeholder-videos] ytd-watch-next-secondary-results-renderer.style-scope.ytd-watch-flexy'
  4390.  
  4391.     let cssSelector2 = '[placeholder-videos] tp-yt-paper-spinner#spinner.style-scope.ytd-continuation-item-renderer'
  4392.  
  4393.     let cssSelector3 = '[placeholder-videos] div#button.style-scope.ytd-continuation-item-renderer'
  4394.  
  4395.     let res = {}
  4396.     if (flag & 1) {
  4397.       res.m1 = document.querySelector(cssSelector1)
  4398.       if (res.m1) wAttr(res.m1, 'is-two-columns', bool ? '' : false);
  4399.     }
  4400.  
  4401.     if (flag & 2) {
  4402.       res.m2 = document.querySelector(cssSelector2)
  4403.       if (res.m2) wAttr(res.m2, 'hidden', bool ? false : '');
  4404.     }
  4405.  
  4406.     if (flag & 4) {
  4407.       res.m3 = document.querySelector(cssSelector3)
  4408.       if (res.m3) wAttr(res.m3, 'hidden', bool ? '' : false);
  4409.     }
  4410.  
  4411.  
  4412.     return res
  4413.  
  4414.  
  4415.  
  4416.  
  4417.   }
  4418.  
  4419.   let lastScrollFetch = 0;
  4420.   // function isScrolledToEnd(){
  4421.   //     return (window.innerHeight + window.pageYOffset) >= document.scrollingElement.scrollHeight - 2;
  4422.   // }
  4423.   let lastOffsetTop = 0;
  4424.   window.addEventListener('scroll', function(evt) {
  4425.  
  4426.     //console.log(evt.target)
  4427.  
  4428.     if (!scriptEnable) return;
  4429.  
  4430.  
  4431.     if (!kRef(scrollingVideosList)) return;
  4432.     if (videoListBeforeSearch) return;
  4433.  
  4434.  
  4435.  
  4436.     let visibleHeight = document.scrollingElement.clientHeight;
  4437.     let totalHeight = document.scrollingElement.scrollHeight;
  4438.  
  4439.     if (totalHeight < visibleHeight * 1.5) return; // filter out two column view;
  4440.  
  4441.     let z = window.pageYOffset + visibleHeight;
  4442.     let h_advanced = totalHeight - (visibleHeight > 5 * 40 ? visibleHeight * 0.5 : 40);
  4443.  
  4444.  
  4445.  
  4446.     if (z > h_advanced && !isWideScreenWithTwoColumns()) {
  4447.  
  4448.       let ct = Date.now();
  4449.       if (ct - lastScrollFetch < 500) return; //prevent continuous calling
  4450.  
  4451.       lastScrollFetch = ct;
  4452.  
  4453.       let res = setVideosTwoColumns(2 | 4, true)
  4454.       if (res.m3 && res.m2) {
  4455.  
  4456.         //wait for DOM change, just in case
  4457.         requestAnimationFrame(() => {
  4458.           let { offsetTop } = res.m2 // as visibility of m2 & m3 switched.
  4459.  
  4460.           if (offsetTop - lastOffsetTop < 40) return; // in case bug, or repeating calling.  // the next button shall below the this button 
  4461.           lastOffsetTop = offsetTop
  4462.  
  4463.           res.m2.parentNode.dispatchEvent(new Event('yt-service-request-sent-button-renderer'))
  4464.  
  4465.           res = null
  4466.         })
  4467.  
  4468.       } else {
  4469.  
  4470.         res = null
  4471.       }
  4472.  
  4473.  
  4474.     }
  4475.  
  4476.  
  4477.  
  4478.  
  4479.   }, { passive: true })
  4480.  
  4481.   let sect_lastUpdate = 0;
  4482.  
  4483.   let sect_holder = null;
  4484.   let sect_hText = null;
  4485.   let sect_hTime = 0;
  4486.  
  4487.   let pendingOne = false;
  4488.   let mtf_forceCheckLiveVideo_disable = 0;
  4489.  
  4490.   let storeLastPanel = null;
  4491.  
  4492.   /** @type {boolean | null} */
  4493.   let deferredVarYTDHidden = null;
  4494.   let scheduledCommentRefresh = false;
  4495.  
  4496.   let pageInit_attrComments = false;
  4497.  
  4498.  
  4499.  
  4500.   let mgChatFrame = {
  4501.     setVar(elm) {
  4502.       mgChatFrame.kVar = mWeakRef(elm)
  4503.     },
  4504.     getVar() {
  4505.       return kRef(mgChatFrame.kVar)
  4506.     },
  4507.     inPage() {
  4508.       let elm = mgChatFrame.getVar();
  4509.       if (!elm) return false;
  4510.       let ytdFlexyElm = kRef(ytdFlexy);
  4511.       if(!ytdFlexyElm) return false;
  4512.       return ytdFlexyElm.contains(elm)
  4513.     }
  4514.   };
  4515.  
  4516.   const timeline = {
  4517.     // after initialized (initObserver)
  4518.     cn1:{},
  4519.     cn2:{},
  4520.     setTimeout( /** @type {TimerHandler} */ f,/** @type {number} */ d){
  4521.       return timeline.cn1[setTimeout(f,d)]=true
  4522.     },
  4523.     clearTimeout(/** @type {number} */ cid){
  4524.       timeline.cn1[cid]=false; return clearTimeout(cid)
  4525.     },
  4526.     setInterval(/** @type {TimerHandler} */ f,/** @type {number} */ d){
  4527.       return timeline.cn2[setInterval(f,d)]=true
  4528.     },
  4529.     clearInterval(/** @type {number} */ cid){
  4530.       timeline.cn2[cid]=false; return clearInterval(cid)
  4531.     },
  4532.     reset(){
  4533.       for(let cid in timeline.cn1) timeline.cn1[cid] && clearTimeout(cid)
  4534.       for(let cid in timeline.cn2) timeline.cn2[cid] && clearInterval(cid)
  4535.       timeline.cn1={}
  4536.       timeline.cn2={}
  4537.     }
  4538.   }
  4539.  
  4540.   class AttributeMutationObserver extends MutationObserver {
  4541.     constructor(flist){
  4542.       super((mutations, observer)=>{
  4543.         for(const mutation of mutations){
  4544.           if (mutation.type === 'attributes') {
  4545.             this.checker(mutation.target, mutation.attributeName)
  4546.           }
  4547.         }
  4548.       })
  4549.       this.flist=flist;
  4550.       this.res={}
  4551.     }
  4552.     
  4553.     takeRecords(){
  4554.       super.takeRecords();
  4555.     }
  4556.     disconnect(){
  4557.       this._target = null;
  4558.       super.disconnect();
  4559.     }
  4560.     observe(/** @type {Node} */ target){
  4561.       if(this._target) return; 
  4562.       this._target = mWeakRef(target);
  4563.       const options = {
  4564.         attributes: true,
  4565.         attributeFilter: Object.keys(this.flist),
  4566.         //attributeFilter: [ "status", "username" ],
  4567.         attributeOldValue: true
  4568.       }
  4569.       super.observe(target, options)
  4570.     }
  4571.     checker(/** @type {Node} */ target,/** @type {string} */ attributeName){
  4572.       let nv = target.getAttribute(attributeName);
  4573.       if(this.res[attributeName]!==nv){
  4574.         this.res[attributeName] = nv
  4575.         let f = this.flist[attributeName];
  4576.         if(f) f(attributeName, nv);
  4577.  
  4578.       }
  4579.     }
  4580.     check(delay = 0){
  4581.       setTimeout(()=>{
  4582.         let target = kRef(this._target)
  4583.         for(const key of Object.keys(this.flist)){
  4584.           this.checker(target,key)
  4585.         }
  4586.         target = null;
  4587.       },delay)
  4588.     }
  4589.   } 
  4590.  
  4591.   function goYoutubeGeniusLyrics(){
  4592.  
  4593.     setTimeout(function $f(){
  4594.  
  4595.       if(!document.documentElement.hasAttribute('w-engagement-panel-genius-lyrics')) return setTimeout($f,100)
  4596.  
  4597.       document.documentElement.dispatchEvent(new CustomEvent('engagement-panel-genius-lyrics'))
  4598.  
  4599.  
  4600.     },100)
  4601.  
  4602.  
  4603.  
  4604.   }
  4605.  
  4606.  
  4607.   /*
  4608.  
  4609.   To be implement: timeline
  4610.  
  4611.   timeline.setTimeout
  4612.   timeline.clearTimeout
  4613.   timeline.setInterval
  4614.   timeline.clearInterval
  4615.  
  4616.   */
  4617.  
  4618.  
  4619.  
  4620.   //Object.keys($0).filter(key=>!(key in $0.constructor.prototype))
  4621.  
  4622.   //Object.getOwnPropertyNames(window).filter(k=>k.startsWith('HTML'))
  4623.   //Object.getOwnPropertyNames(window).filter(k=>k.startsWith('HTML')).filter(k=>$0 instanceof window[k])
  4624.  
  4625.  
  4626.   /* --------------------------- browser's bug in -webkit-box ----------------------------------------- */
  4627.  
  4628.   /*
  4629.    fix bug for comment section - version 1.8.7 
  4630.   This issue is the bug in browser's rendering
  4631.    I guess, this is due to the lines clamp with display:-webkit-box 
  4632.    use stupid coding to let it re-render when its content become visible
  4633.    
  4634.   /*
  4635.  
  4636.   ytd-expander[should-use-number-of-lines][collapsed] > #content.ytd-expander {
  4637.       color: var(--yt-spec-text-primary);
  4638.       display: -webkit-box;
  4639.       overflow: hidden;
  4640.       max-height: none;
  4641.       -webkit-box-orient: vertical;
  4642.       -webkit-line-clamp: var(--ytd-expander-max-lines, 4);
  4643.   }
  4644.  
  4645.   // v1.8.36 imposed a effective solution for fixing this bug
  4646.  
  4647.   */
  4648.  
  4649.   /* --------------------------- browser's bug in -webkit-box ----------------------------------------- */
  4650.  
  4651.  
  4652.   /**
  4653.    * 
  4654.  
  4655.  
  4656. f.initChildrenObserver=function(){var a=this;this.observer=new MutationObserver(function(){return a.childrenChanged()});
  4657. this.observer.observe(this.$.content,{subtree:!0,childList:!0,attributes:!0});this.childrenChanged()};
  4658. f.childrenChanged=function(){var a=this;this.alwaysToggleable?this.canToggle=this.alwaysToggleable:this.canToggleJobId||(this.canToggleJobId=window.requestAnimationFrame(function(){$h(function(){a.canToggleJobId=0;a.calculateCanCollapse()})}))};
  4659.  
  4660.  
  4661. f.onIronResize=function(){this.recomputeOnResize&&this.childrenChanged()};
  4662.  
  4663.  
  4664. onButtonClick_:function(){this.fire("yt-close-upsell-dialog")},
  4665. computeHasHeader_:function(a){return!!a.headerBackgroundImage}});var geb;var heb;var ieb;var jeb;var xI=function(){var a=L.apply(this,arguments)||this;a.alignAuto=!1;a.collapsed=!0;a.isToggled=!1;a.alwaysCollapsed=!1;a.canToggle=!0;a.collapsedHeight=80;a.disableToggle=!1;a.alwaysToggleable=!1;a.reversed=!1;a.shouldUseNumberOfLines=!1;a.recomputeOnResize=!1;a.canToggleJobId=0;return a};
  4666. n(xI,L);f=xI.prototype;f.alwaysToggleableChanged=function(){this.alwaysToggleable&&(this.canToggle=!0)};
  4667.  
  4668.  
  4669. f.calculateCanCollapse=function(){this.canToggle=this.shouldUseNumberOfLines?this.alwaysToggleable||this.$.content.offsetHeight<this.$.content.scrollHeight:this.alwaysToggleable||this.$.content.scrollHeight>this.collapsedHeight};
  4670. f.detachObserver=function(){this.observer&&this.observer.disconnect()};
  4671.  
  4672.    * 
  4673.    * 
  4674.    * 
  4675.    */
  4676.  
  4677.  
  4678.  
  4679.  
  4680. })();
  4681.  
  4682.  
  4683.  
  4684.  
  4685.  
  4686.  
  4687.  
  4688.  
  4689.  
  4690.  
  4691.  
  4692.  
  4693.  
  4694.  
  4695.  
  4696.  
  4697.  
  4698.  
  4699.  
  4700.  
  4701.  
  4702.  
  4703.  
  4704.  
  4705.  
  4706.  
  4707.  
  4708.  
  4709.  
  4710.  
  4711.  
  4712.  
  4713.  
  4714.  
  4715.  
  4716.  
  4717.  
  4718.  
  4719.  
  4720.  
  4721.  
  4722.  
  4723.     // https://github.com/cyfung1031/Tabview-Youtube/raw/main/js/content.js
  4724.  
  4725. }
  4726.  
  4727.  
  4728. ;!(function $$() {
  4729.     'use strict';
  4730.  
  4731.     if(document.documentElement==null) return window.requestAnimationFrame($$)
  4732.  
  4733.     const cssTxt = GM_getResourceText("contentCSS");
  4734.  
  4735.     function addStyle (styleText) {
  4736.       const styleNode = document.createElement('style');
  4737.       styleNode.type = 'text/css';
  4738.       styleNode.textContent = styleText;
  4739.       document.documentElement.appendChild(styleNode);
  4740.       return styleNode;
  4741.     }
  4742.  
  4743.     addStyle (cssTxt);
  4744.  
  4745.     main(window.$);
  4746.  
  4747.  
  4748.     // Your code here...
  4749. })();