☰

Tabview Youtube

Make comments and lists into tabs for YouTube Videos

当前为 2022-05-22 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     2.3.1
  9. // @license     MIT https://github.com/cyfung1031/Tabview-Youtube/blob/main/LICENSE
  10. // @description     Make comments and lists into tabs for YouTube Videos
  11. // @description:en  Make comments and lists into tabs for YouTube Videos
  12. // @description:jp  YouTube動画のコメントやリストなどをタブに作成します
  13. // @description:zh-tw  把Youtube Videos中的評論及影片清單製作成Tabs
  14. // @description:zh-cn  把Youtube Videos中的评论及视频列表制作成Tabs
  15. // @author       CY Fung
  16. // @include     https://www.youtube.com/*
  17. // @icon         https://github.com/cyfung1031/Tabview-Youtube/raw/main/images/icon128p.png
  18. // @run-at      document-start
  19. // @grant       GM_getResourceText
  20. // @resource     contentCSS https://raw.githubusercontent.com/cyfung1031/Tabview-Youtube/fe4e6d90673d5524207b77c1bde073aa80f2c041/css/style_content.css
  21. // @resource     injectionJS1 https://raw.githubusercontent.com/cyfung1031/Tabview-Youtube/fe4e6d90673d5524207b77c1bde073aa80f2c041/js/injection_script_1.js
  22. // @resource     injectionFixAutoComplete https://raw.githubusercontent.com/cyfung1031/Tabview-Youtube/fe4e6d90673d5524207b77c1bde073aa80f2c041/js/injectionScript_fixAutoComplete.js
  23. // @require      https://cdnjs.cloudflare.com/ajax/libs/cash/8.1.0/cash.min.js
  24. // @noframes
  25. // ==/UserScript==
  26.  
  27. /* jshint esversion:6 */
  28.  
  29. function main($){
  30.     // MIT License
  31.     // https://github.com/cyfung1031/Tabview-Youtube/raw/main/js/content.js
  32.  
  33.  
  34.  
  35.  
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  38.  
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  45.  
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  48.  
  49.  
  50.  
  51.  
  52. -(function() {
  53.  
  54.   function inIframe() {
  55.     try {
  56.       return window.self !== window.top;
  57.     } catch (e) {
  58.       return true;
  59.     }
  60.   }
  61.  
  62.   if (inIframe()) return;
  63.  
  64.   if (!$) return;
  65.  
  66.   /**
  67.    * SVG resources:
  68.    * <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>
  69.    */
  70.  
  71.   const scriptVersionForExternal = '2022/05/07';
  72.  
  73.   //const githubURLBase = "https://raw.githubusercontent.com/cyfung1031/Tabview-Youtube";
  74.   //const githubURLCommit = "bdf401045266e5224663f80b276bc7f56d122b8d";
  75.  
  76.   const isMyScriptInChromeRuntime = () => typeof((((window || 0).chrome || 0).runtime || 0).getURL) == 'function'
  77.  
  78.  
  79.   const svgComments = `
  80.     <path d="M40.068,13.465L5.93,13.535c-3.27,0-5.93,2.66-5.93,5.93v21.141c0,3.27,2.66,5.929,5.93,5.929H12v10
  81.     c0,0.413,0.254,0.784,0.64,0.933c0.117,0.045,0.239,0.067,0.36,0.067c0.276,0,0.547-0.115,0.74-0.327l9.704-10.675l16.626-0.068
  82.     c3.27,0,5.93-2.66,5.93-5.929V19.395C46,16.125,43.34,13.465,40.068,13.465z M10,23.465h13c0.553,0,1,0.448,1,1s-0.447,1-1,1H10
  83.     c-0.553,0-1-0.448-1-1S9.447,23.465,10,23.465z M36,37.465H10c-0.553,0-1-0.448-1-1s0.447-1,1-1h26c0.553,0,1,0.448,1,1
  84.     S36.553,37.465,36,37.465z M36,31.465H10c-0.553,0-1-0.448-1-1s0.447-1,1-1h26c0.553,0,1,0.448,1,1S36.553,31.465,36,31.465z"/>
  85.     <path d="M54.072,2.535L19.93,2.465c-3.27,0-5.93,2.66-5.93,5.93v3.124l26.064-0.054c4.377,0,7.936,3.557,7.936,7.93v21.07v0.071
  86.     v2.087l3.26,3.586c0.193,0.212,0.464,0.327,0.74,0.327c0.121,0,0.243-0.022,0.36-0.067c0.386-0.149,0.64-0.52,0.64-0.933v-10h1.07
  87.     c3.27,0,5.93-2.66,5.93-5.929V8.465C60,5.195,57.34,2.535,54.072,2.535z"/>
  88.     `.trim();
  89.  
  90.   const svgVideos = `<path d="M298,33c0-13.255-10.745-24-24-24H24C10.745,9,0,19.745,0,33v232c0,13.255,10.745,24,24,24h250c13.255,0,24-10.745,24-24V33
  91.     z M91,39h43v34H91V39z M61,259H30v-34h31V259z M61,73H30V39h31V73z M134,259H91v-34h43V259z M123,176.708v-55.417
  92.     c0-8.25,5.868-11.302,12.77-6.783l40.237,26.272c6.902,4.519,6.958,11.914,0.056,16.434l-40.321,26.277
  93.     C128.84,188.011,123,184.958,123,176.708z M207,259h-43v-34h43V259z M207,73h-43V39h43V73z M268,259h-31v-34h31V259z M268,73h-31V39
  94.     h31V73z"/>`.trim();
  95.  
  96.   const svgInfo = `<path d="M11.812,0C5.289,0,0,5.289,0,11.812s5.289,11.813,11.812,11.813s11.813-5.29,11.813-11.813
  97.     S18.335,0,11.812,0z M14.271,18.307c-0.608,0.24-1.092,0.422-1.455,0.548c-0.362,0.126-0.783,0.189-1.262,0.189
  98.     c-0.736,0-1.309-0.18-1.717-0.539s-0.611-0.814-0.611-1.367c0-0.215,0.015-0.435,0.045-0.659c0.031-0.224,0.08-0.476,0.147-0.759
  99.     l0.761-2.688c0.067-0.258,0.125-0.503,0.171-0.731c0.046-0.23,0.068-0.441,0.068-0.633c0-0.342-0.071-0.582-0.212-0.717
  100.     c-0.143-0.135-0.412-0.201-0.813-0.201c-0.196,0-0.398,0.029-0.605,0.09c-0.205,0.063-0.383,0.12-0.529,0.176l0.201-0.828
  101.     c0.498-0.203,0.975-0.377,1.43-0.521c0.455-0.146,0.885-0.218,1.29-0.218c0.731,0,1.295,0.178,1.692,0.53
  102.     c0.395,0.353,0.594,0.812,0.594,1.376c0,0.117-0.014,0.323-0.041,0.617c-0.027,0.295-0.078,0.564-0.152,0.811l-0.757,2.68
  103.     c-0.062,0.215-0.117,0.461-0.167,0.736c-0.049,0.275-0.073,0.485-0.073,0.626c0,0.356,0.079,0.599,0.239,0.728
  104.     c0.158,0.129,0.435,0.194,0.827,0.194c0.185,0,0.392-0.033,0.626-0.097c0.232-0.064,0.4-0.121,0.506-0.17L14.271,18.307z
  105.     M14.137,7.429c-0.353,0.328-0.778,0.492-1.275,0.492c-0.496,0-0.924-0.164-1.28-0.492c-0.354-0.328-0.533-0.727-0.533-1.193
  106.     c0-0.465,0.18-0.865,0.533-1.196c0.356-0.332,0.784-0.497,1.28-0.497c0.497,0,0.923,0.165,1.275,0.497
  107.     c0.353,0.331,0.53,0.731,0.53,1.196C14.667,6.703,14.49,7.101,14.137,7.429z"/>`.trim();
  108.  
  109.   const svgPlayList = `
  110.     <rect x="0" y="64" width="256" height="42.667"/>
  111.     <rect x="0" y="149.333" width="256" height="42.667"/>
  112.     <rect x="0" y="234.667" width="170.667" height="42.667"/>
  113.     <polygon points="341.333,234.667 341.333,149.333 298.667,149.333 298.667,234.667 213.333,234.667 213.333,277.333 
  114.     298.667,277.333 298.667,362.667 341.333,362.667 341.333,277.333 426.667,277.333 426.667,234.667"/>
  115.     `.trim();
  116.  
  117.   // --- Youtube Video Testing : 
  118.   // Square Video: https://www.youtube.com/watch?v=L0RXVnRbFg8 
  119.   // Square Video: https://www.youtube.com/watch?v=bK_rKhMIotU
  120.   // ---
  121.  
  122.  
  123.   const LAYOUT_TWO_COLUMNS = 1;
  124.   const LAYOUT_THEATER = 2;
  125.   const LAYOUT_FULLSCREEN = 4;
  126.   const LAYOUT_CHATROOM = 8;
  127.   const LAYOUT_CHATROOM_COLLASPED = 16;
  128.   const LAYOUT_TAB_EXPANDED = 32;
  129.   const LAYOUT_ENGAGEMENT_PANEL_EXPAND = 64;
  130.  
  131.   const mtoInterval1 = 40;
  132.   const mtoInterval2 = 150;
  133.  
  134.   let lastVideoURL = null; // for less attribute set only
  135.   
  136.   /** @type {WeakRef | null} */ 
  137.   const WeakRef = window.WeakRef;
  138.   const mWeakRef = WeakRef ? (o => o ? new WeakRef(o) : null) : (o => o || null);
  139.   /** @type {(wr: Object | null) => Object | null} */
  140.   const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
  141.  
  142.  
  143.  
  144.   const nonCryptoRandStr_base = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
  145.   function nonCryptoRandStr(/** @type {number} */ n){
  146.     const result = new Array(n);
  147.     const baseStr = nonCryptoRandStr_base;
  148.     const bLen = baseStr.length;
  149.     for ( let i = 0; i < n; i++ ) {
  150.       let t = null
  151.       do {
  152.         t = baseStr.charAt(Math.floor(Math.random() * bLen));
  153.       }while(i===0 && 10-t>0)
  154.       result[i]=t;
  155.    }
  156.    return result.join('');
  157.   }
  158.  
  159. /**
  160.  * Class definition
  161.  * @property {string} propName - propriety description
  162.  * ...
  163.  */
  164.   class ObserverRegister{
  165.     
  166.     constructor(/** @type {()=>MutationObserver | IntersectionObserver} */ observerCreator){
  167.       let uid = null;
  168.       const uidStore = ObserverRegister.uidStore;
  169.       do{
  170.         uid = nonCryptoRandStr(5);
  171.       }while(uidStore[uid])
  172.       uidStore[uid] = true;
  173.       
  174.       /**
  175.        * uid is the unique string for each observer
  176.        * @type {string}
  177.        * @public
  178.        */
  179.       this.uid = uid;
  180.       
  181.       /**
  182.        * observerCreator is a function to create the observer
  183.        * @type {Function}
  184.        * @public
  185.        */
  186.       this.observerCreator = observerCreator
  187.       
  188.       /**
  189.        * observer is the actual observer object
  190.        * @type {MutationObserver | IntersectionObserver}
  191.        * @public
  192.        */
  193.       this.observer = null;
  194.     }
  195.     bindElement(/** @type {HTMLElement} */ elm, ...args){
  196.       if(elm.hasAttribute(`o3r-${this.uid}`))return false;
  197.       elm.setAttribute(`o3r-${this.uid}`,'')
  198.       if(this.observer===null){
  199.         this.observer=this.observerCreator();
  200.       }
  201.       this.observer.observe(elm, ...args)
  202.       return true
  203.     }
  204.     clear(/** @type {boolean} */ flag){
  205.       if(this.observer !== null){
  206.         //const uidStore = ObserverRegister.uidStore;
  207.         if(flag === true){
  208.           this.observer.takeRecords();
  209.           this.observer.disconnect();
  210.         }
  211.         this.observer = null;
  212.         for(const s of document.querySelectorAll(`[o3r-${this.uid}]`)) s.removeAttribute(`o3r-${this.uid}`)
  213.         //uidStore[this.uid]=false;
  214.         //this.uid = null;
  215.       }
  216.     }
  217.   }
  218.  
  219.   /**
  220.  * 'uidStore' is the static store of strings used.
  221.  * @static
  222.  */
  223.   ObserverRegister.uidStore = {}; //backward compatible with FireFox 55.
  224.  
  225.   const mtoMutation_watchFlexy = new ObserverRegister(()=>{
  226.     return new MutationObserver(FP.mtoNavF)
  227.   });
  228.   const sa_wflexy = mtoMutation_watchFlexy.uid;
  229.  
  230.   const mtoMutation_body = new ObserverRegister(()=>{
  231.     return new MutationObserver(FP.mtoBodyF)
  232.   });
  233.   const sa_body = mtoMutation_body.uid;
  234.  
  235.   const mtoFlexyAttr = new ObserverRegister(()=>{
  236.     return new MutationObserver(mtf_attrFlexy)
  237.   });
  238.   const sa_flexyAttr = mtoFlexyAttr.uid;
  239.  
  240.   const mtoVisibility_EngagementPanel = new ObserverRegister(()=>{
  241.     return new MutationObserver(FP.mtf_attrEngagementPanel)
  242.   });
  243.   const sa_epanel = mtoVisibility_EngagementPanel.uid;
  244.  
  245.   const mtoVisibility_Playlist = new ObserverRegister(()=>{
  246.     return new AttributeMutationObserver({
  247.       "hidden": FP.mtf_attrPlaylist
  248.     })
  249.   })
  250.   const sa_playlist = mtoVisibility_Playlist.uid;
  251.  
  252.   const mtoVisibility_Comments = new ObserverRegister(()=>{
  253.     return new AttributeMutationObserver({
  254.       "hidden": FP.mtf_attrComments
  255.     })
  256.   })
  257.   const sa_comments = mtoVisibility_Comments.uid;
  258.  
  259.  
  260.   const mtoVisibility_Chatroom = new ObserverRegister(()=>{
  261.     return new AttributeMutationObserver({
  262.       "collapsed": FP.mtf_attrChatroom
  263.     })
  264.   })
  265.   const sa_chatroom = mtoVisibility_Chatroom.uid;
  266.  
  267.  
  268.  
  269.  
  270.  
  271.   function tracer(key, cmp) {
  272.     if (cmp > 0) return tracer[key] === cmp;
  273.     return (tracer[key] = Date.now());
  274.   }
  275.  
  276.   function racer(key, f) {
  277.     let now = Date.now();
  278.     const kTime = `${key}$$1`
  279.     let t = racer[kTime] || 0;
  280.  
  281.     if (now < t) {
  282.       const kCount = `${key}$$2`;
  283.       racer[kCount] = (racer[kCount] || 0) + 1;
  284.       if (racer[kCount] === 1) {
  285.         let g = f;
  286.         requestAnimationFrame(() => {
  287.           racer[kCount] = 0;
  288.           g();
  289.           g = null;
  290.         })
  291.       }
  292.     } else {
  293.       racer[kTime] = now + 16;
  294.       f();
  295.     }
  296.   }
  297.  
  298.   class ScriptEF {
  299.     constructor() {
  300.       this._id = scriptEC;
  301.     }
  302.     isValid() {
  303.       return this._id === scriptEC;
  304.     }
  305.   }
  306.  
  307.   class Timeout {
  308.  
  309.     set(f, d, repeatCount) {
  310.       if (this.cid > 0) return;
  311.       let sEF = new ScriptEF();
  312.       if (repeatCount > 0) {
  313.  
  314.         let rc = repeatCount;
  315.         const g = () => {
  316.           this.cid = 0;
  317.           if (!sEF.isValid()) return;
  318.           let res = f();
  319.           if (--rc <= 0) return;
  320.           if (res === true) this.cid = timeline.setTimeout(g, d);
  321.         }
  322.         g();
  323.  
  324.       } else {
  325.  
  326.         const g = () => {
  327.           this.cid = 0;
  328.           if (!sEF.isValid()) return;
  329.           if (f() === true) this.cid = timeline.setTimeout(g, d);
  330.         }
  331.         this.cid = timeline.setTimeout(g, d);
  332.       }
  333.     }
  334.  
  335.     clear() {
  336.       if (this.cid > 0) timeline.clearTimeout(this.cid);
  337.     }
  338.  
  339.     isEmpty() {
  340.       return !this.cid
  341.     }
  342.  
  343.  
  344.   }
  345.  
  346.   class Mutex {
  347.  
  348.     constructor() {
  349.       this.p = Promise.resolve()
  350.     }
  351.  
  352.     lockWith(f) {
  353.  
  354.       this.p = this.p.then(() => {
  355.         return new Promise(f)
  356.       }).catch(console.warn)
  357.     }
  358.  
  359.   }
  360.  
  361.  
  362.  
  363.   function prettyElm(/** @type {Element} */ elm) {
  364.     if (!elm || !elm.nodeName) return null;
  365.     const eId = elm.id || null;
  366.     const eClsName = elm.className || null;
  367.     return [elm.nodeName.toLowerCase(), typeof eId == 'string' ? "#" + eId : '', typeof eClsName == 'string' ? '.' + eClsName.replace(/\s+/g, '.') : ''].join('').trim();
  368.   }
  369.  
  370.   function extractTextContent(/** @type {Node} */ elm) {
  371.     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, '')
  372.   }
  373.  
  374.   function addScript(/** @type {string} */ scriptText) {
  375.     const scriptNode = document.createElement('script');
  376.     scriptNode.type = 'text/javascript';
  377.     scriptNode.textContent = scriptText;
  378.     try {
  379.       document.documentElement.appendChild(scriptNode);
  380.     } catch (e) {
  381.       console.log('addScript Error', e)
  382.     }
  383.     return scriptNode;
  384.   }
  385.  
  386.   function addScriptByURL(/** @type {string} */ scriptURL) {
  387.     const scriptNode = document.createElement('script');
  388.     scriptNode.type = 'text/javascript';
  389.     scriptNode.src = scriptURL;
  390.     try {
  391.       document.documentElement.appendChild(scriptNode);
  392.     } catch (e) {
  393.       console.log('addScriptByURL Error', e)
  394.     }
  395.     return scriptNode;
  396.   }
  397.  
  398.   function addStyle(/** @type {string} */ styleText, /** @type {HTMLElement | Document} */ container) {
  399.     const styleNode = document.createElement('style');
  400.     //styleNode.type = 'text/css';
  401.     styleNode.textContent = styleText;
  402.     (container || document.documentElement).appendChild(styleNode);
  403.     return styleNode;
  404.   }
  405.  
  406.  
  407.   const stopIframePropagation = function(/** @type {Event} */ evt){
  408.     if(scriptEnable && evt && evt.target && evt.target.nodeName=='IFRAME'){
  409.       evt.stopImmediatePropagation();
  410.       evt.stopPropagation();
  411.     }
  412.   }
  413.   document.addEventListener('mouseover', stopIframePropagation, true)
  414.   document.addEventListener('mouseout', stopIframePropagation, true)
  415.   document.addEventListener('mousedown', stopIframePropagation, true)
  416.   document.addEventListener('mouseup', stopIframePropagation, true)
  417.   document.addEventListener('keydown', stopIframePropagation, true)
  418.   document.addEventListener('keyup', stopIframePropagation, true)
  419.   document.addEventListener('mouseenter', stopIframePropagation, true)
  420.   document.addEventListener('mouseleave', stopIframePropagation, true)
  421.  
  422.  
  423.  
  424.   function isDOMVisible(/** @type {HTMLElement} */ elem) {
  425.     // jQuery version : https://github.com/jquery/jquery/blob/a684e6ba836f7c553968d7d026ed7941e1a612d8/src/css/hiddenVisibleSelectors.js
  426.     return !!(elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length);
  427.   }
  428.  
  429.   function isNonEmptyString(s) {
  430.     return typeof s == 'string' && s.length > 0;
  431.   }
  432.  
  433.  
  434.   async function nativeFunc(/** @type {EventTarget} */ dom, /** @type {string} */ property, /** @type {any} */ args) {
  435.     dom.dispatchEvent(new CustomEvent("userscript-call-dom-func", { detail: { property, args } }))
  436.   }
  437.  
  438.   // async function nativeValue(dom, property, args) {
  439.   //   dom.dispatchEvent(new CustomEvent("userscript-call-dom-value", { detail: { property, args } }))
  440.   // }
  441.   // async function nativeFuncStacked(/** @type {string} */ selector, /** @type {string} */ property, /** @type {any} */ args){
  442.   //   document.dispatchEvent(new CustomEvent("userscript-call-dom-func-stacked", { detail: { selector, property, args } }))
  443.   // }
  444.   // async function nativeValueStacked(selector, property, args){
  445.   //   document.dispatchEvent(new CustomEvent("userscript-call-dom-value-stacked", { detail: { selector, property, args } }))
  446.   // }
  447.   // async function nativeConstStacked(selector, property, args){
  448.   //   document.dispatchEvent(new CustomEvent("userscript-call-dom-const-stacked", { detail: { selector, property, args } }))
  449.   // }
  450.  
  451.  
  452.   function akAttr(/** @type {HTMLElement} */ cssElm, /** @type {String} */ attrName, /** @type {boolean} */ isNegative, /** @type {string | any} */ flag) {
  453.     // isNegative => incomplete loading
  454.  
  455.     let u = parseInt(cssElm.getAttribute(attrName) || 0) || 0;
  456.     let ak = Math.abs(u);
  457.  
  458.     if (ak > 100 && isNegative && u < 0) {
  459.  
  460.     } else if (ak > 100 && !isNegative && u > 0) {
  461.  
  462.     } else {
  463.       if (ak <= 100) {
  464.         ak = 101;
  465.       } else {
  466.         ak++;
  467.         if (ak >= 800) ak = 101;
  468.       }
  469.       // 101, 102, ... 799, 101 
  470.     }
  471.  
  472.     cssElm.setAttribute(attrName, `${ isNegative ? -ak : ak }${ flag || '' }`)
  473.   }
  474.  
  475.  
  476.  
  477.   let timeout_resize_for_layout_change = new Timeout();
  478.  
  479.   function dispatchWindowResize(){
  480.     // for youtube to detect layout resize for adjusting Player tools
  481.     return window.dispatchEvent(new Event('resize'));
  482.   }
  483.  
  484.  
  485.  
  486.   function layoutStatusChanged(/** @type {number} */ old_layoutStatus, /** @type {number} */ new_layoutStatus) {
  487.  
  488.  
  489.     if (old_layoutStatus === new_layoutStatus) return;
  490.  
  491.     const cssElm = kRef(ytdFlexy);
  492.  
  493.     if (!cssElm) return;
  494.  
  495.  
  496.     const new_isExpandedChat = !(new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  497.     const new_isCollaspedChat = (new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  498.  
  499.     const new_isTwoColumns = !!(new_layoutStatus & LAYOUT_TWO_COLUMNS);
  500.     const new_isTheater = !!(new_layoutStatus & LAYOUT_THEATER);
  501.     const new_isTabExpanded = !!(new_layoutStatus & LAYOUT_TAB_EXPANDED);
  502.     const new_isFullScreen = !!(new_layoutStatus & LAYOUT_FULLSCREEN);
  503.     const new_isExpandEPanel = !!(new_layoutStatus & LAYOUT_ENGAGEMENT_PANEL_EXPAND);
  504.  
  505.     
  506.  
  507.  
  508.     function showTabOrChat() {
  509.  
  510.       layoutStatusMutex.lockWith(unlock => {
  511.  
  512.         if (lastShowTab == '#chatroom') {
  513.  
  514.           if (new_isTabExpanded) switchTabActivity(null)
  515.           if (!new_isExpandedChat) ytBtnExpandChat();
  516.  
  517.         } else if (lastShowTab && lastShowTab.indexOf('#engagement-panel-') == 0) {
  518.  
  519.           if (new_isTabExpanded) switchTabActivity(null)
  520.           if (!new_isExpandEPanel) ytBtnOpenEngagementPanel(lastShowTab);
  521.  
  522.         } else {
  523.  
  524.           if (new_isExpandedChat) ytBtnCollapseChat()
  525.           if (!new_isTabExpanded) {setToActiveTab();}
  526.  
  527.         }
  528.  
  529.         timeline.setTimeout(unlock, 40);
  530.  
  531.       })
  532.     }
  533.  
  534.     function hideTabAndChat() {
  535.  
  536.       layoutStatusMutex.lockWith(unlock => {
  537.  
  538.         if (new_isTabExpanded) switchTabActivity(null)
  539.         if (new_isExpandedChat) ytBtnCollapseChat()
  540.         if (new_isExpandEPanel) ytBtnCloseEngagementPanels();
  541.  
  542.  
  543.         timeline.setTimeout(unlock, 40);
  544.  
  545.       })
  546.  
  547.     }
  548.  
  549.  
  550.     if (new_isExpandedChat || new_isTabExpanded || new_isExpandEPanel) {
  551.       if (statusCollasped !== 1) statusCollasped = 1;
  552.     } else {
  553.       if (statusCollasped === 1) statusCollasped = 2;
  554.     }
  555.  
  556.     let changes = 0;
  557.  
  558.     if (old_layoutStatus !== null) changes = old_layoutStatus ^ new_layoutStatus;
  559.  
  560.     let chat_collasped_changed = !!(changes & LAYOUT_CHATROOM_COLLASPED)
  561.     let tab_expanded_changed = !!(changes & LAYOUT_TAB_EXPANDED)
  562.     let theater_mode_changed = !!(changes & LAYOUT_THEATER)
  563.     let column_mode_changed = !!(changes & LAYOUT_TWO_COLUMNS)
  564.     let fullscreen_mode_changed = !!(changes & LAYOUT_FULLSCREEN)
  565.     let epanel_expanded_changed = !!(changes & LAYOUT_ENGAGEMENT_PANEL_EXPAND)
  566.  
  567.     let tab_change = (tab_expanded_changed ? 1 : 0) | (chat_collasped_changed ? 2 : 0) | (epanel_expanded_changed ? 4 : 0);
  568.  
  569.     let isChatOrTabExpandTriggering = tab_change == 0 ? false : (
  570.       (tab_expanded_changed && new_isTabExpanded) ||
  571.       (chat_collasped_changed && new_isExpandedChat) ||
  572.       (epanel_expanded_changed && new_isExpandEPanel)
  573.     );
  574.  
  575.     let isChatOrTabCollaspeTriggering = tab_change == 0 ? false : (
  576.       (tab_expanded_changed && !new_isTabExpanded) ||
  577.       (chat_collasped_changed && new_isCollaspedChat) ||
  578.       (epanel_expanded_changed && !new_isExpandEPanel)
  579.     );
  580.  
  581.  
  582.  
  583.     let moreThanOneShown = (new_isTabExpanded + new_isExpandedChat + new_isExpandEPanel) > 1
  584.  
  585.     let requestVideoResize = false;
  586.  
  587.     if (fullscreen_mode_changed || new_isFullScreen) {
  588.  
  589.     } else if(new_isTwoColumns && !new_isTheater && !column_mode_changed && (tab_change==2 || tab_change==4) && !new_isTabExpanded && new_isExpandedChat && new_isExpandEPanel){
  590.  
  591.       if(epanel_expanded_changed){
  592.         layoutStatusMutex.lockWith(unlock => {
  593.           ytBtnCollapseChat();
  594.           setTimeout(unlock,13)
  595.         })
  596.       }else if(chat_collasped_changed){
  597.         layoutStatusMutex.lockWith(unlock => {
  598.           ytBtnCloseEngagementPanels();
  599.           setTimeout(unlock,13)
  600.         })
  601.  
  602.       }
  603.  
  604.     } else if (tab_change == 0 && column_mode_changed && new_isTwoColumns && !new_isTheater && statusCollasped === 1 && moreThanOneShown) {
  605.  
  606.       showTabOrChat();
  607.       requestVideoResize = true;
  608.  
  609.     } else if (tab_change == 2 && new_isExpandedChat && new_isTwoColumns && !new_isTheater && statusCollasped === 1 && new_isTabExpanded && !column_mode_changed) {
  610.  
  611.       switchTabActivity(null);
  612.       requestVideoResize = true;
  613.  
  614.     } else if (isChatOrTabExpandTriggering && new_isTwoColumns && new_isTheater && statusCollasped === 1 && !theater_mode_changed && !column_mode_changed) {
  615.  
  616.       ytBtnCancelTheater();
  617.       requestVideoResize = true;
  618.  
  619.     } else if (new_isTwoColumns && new_isTheater && statusCollasped === 1) {
  620.  
  621.       hideTabAndChat();
  622.       requestVideoResize = true;
  623.  
  624.     } else if (isChatOrTabCollaspeTriggering && new_isTwoColumns && !new_isTheater && statusCollasped === 2 && !column_mode_changed) {
  625.  
  626.       ytBtnSetTheater();
  627.       requestVideoResize = true;
  628.  
  629.     } else if (tab_change == 0 && (column_mode_changed || theater_mode_changed) && new_isTwoColumns && !new_isTheater && statusCollasped !== 1) {
  630.  
  631.       showTabOrChat();
  632.       requestVideoResize = true;
  633.  
  634.     } else if (!new_isFullScreen && new_isTwoColumns && !new_isTheater && !new_isTabExpanded &&
  635.       (new_isCollaspedChat || !new_isExpandedChat) &&
  636.       !new_isExpandEPanel
  637.     ) {
  638.       // bug fix for restoring from mini player
  639.  
  640.       layoutStatusMutex.lockWith(unlock => {
  641.         setToActiveTab();
  642.         timeline.setTimeout(unlock, 40);
  643.       })
  644.  
  645.       requestVideoResize = true;
  646.  
  647.     } else if (tab_expanded_changed) {
  648.  
  649.       requestVideoResize = true;
  650.  
  651.     }
  652.  
  653.  
  654.     if (column_mode_changed && !chat_collasped_changed && new_isExpandedChat) {
  655.  
  656.       runAfterExpandChat();
  657.  
  658.     }
  659.  
  660.  
  661.  
  662.     if (requestVideoResize) {
  663.  
  664.       timeout_resize_for_layout_change.clear();
  665.       timeout_resize_for_layout_change.set(() => {
  666.         dispatchWindowResize();
  667.       }, 92)
  668.  
  669.     } else if (timeout_resize_for_layout_change.isEmpty() && (Date.now()) - lastResizeAt > 600) {
  670.       timeout_resize_for_layout_change.set(() => {
  671.         if ((Date.now()) - lastResizeAt > 600) dispatchWindowResize();
  672.       }, 62)
  673.     }
  674.  
  675.  
  676.  
  677.  
  678.   }
  679.  
  680.  
  681.  
  682.   const wls = new Proxy({
  683.     /** @type {number | null} */
  684.     layoutStatus:undefined
  685.   }, {
  686.     get: function(target, prop) {
  687.       return target[prop];
  688.     },
  689.     set: function(target, prop, value) {
  690.       if(prop=='layoutStatus'){
  691.           
  692.         if (value === null) {
  693.           statusCollasped = 0;
  694.           target[prop] = value;
  695.           return;
  696.         }else if(target[prop]===value){
  697.           return;
  698.         }else{
  699.           if (!target.layoutStatus_pending) {
  700.             target.layoutStatus_pending = true;
  701.             const old_layoutStatus = target[prop];
  702.             target[prop] = value;
  703.             layoutStatusMutex.lockWith(unlock => {
  704.               target.layoutStatus_pending = false;
  705.               layoutStatusChanged(old_layoutStatus, target[prop]);
  706.               timeline.setTimeout(unlock, 40)
  707.             })
  708.             return;
  709.           }
  710.         }
  711.       }
  712.       target[prop] = value;
  713.     },
  714.     has: function(target, prop) {
  715.       return (prop in target);
  716.     }
  717.   });
  718.  
  719.  
  720.  
  721.  
  722.  
  723.  
  724.   const svgElm = (w, h, vw, vh, p) => `<svg width="${w}" height="${h}" viewBox="0 0 ${vw} ${vh}" preserveAspectRatio="xMidYMid meet">${p}</svg>`
  725.  
  726.   let settings = {
  727.     defaultTab: "#tab-videos"
  728.   };
  729.  
  730.  
  731.   let mtoInterval = mtoInterval1;
  732.  
  733.   function isVideoPlaying(video) {
  734.     return video.currentTime > 0 && !video.paused && !video.ended && video.readyState > video.HAVE_CURRENT_DATA;
  735.   }
  736.  
  737.   function wAttr(elm, attr, kv) {
  738.     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) }
  739.   }
  740.  
  741.   function hideTabBtn(tabBtn) {
  742.     let isActiveBefore = tabBtn.classList.contains('active');
  743.     tabBtn.classList.add("tab-btn-hidden");
  744.     if (isActiveBefore) {
  745.       setToActiveTab();
  746.     }
  747.   }
  748.  
  749.   function hasAttribute(obj, key) {
  750.     return obj && obj.hasAttribute(key);
  751.   }
  752.  
  753.   function isTheater() {
  754.     const cssElm = kRef(ytdFlexy);
  755.     return (cssElm && cssElm.hasAttribute('theater'))
  756.   }
  757.  
  758.   function isFullScreen() {
  759.     const cssElm = kRef(ytdFlexy);
  760.     return (cssElm && cssElm.hasAttribute('fullscreen'))
  761.   }
  762.  
  763.   function isChatExpand() {
  764.     const cssElm = kRef(ytdFlexy);
  765.     return cssElm && cssElm.hasAttribute('userscript-chatblock') && !cssElm.hasAttribute('userscript-chat-collapsed')
  766.   }
  767.  
  768.   function isWideScreenWithTwoColumns() {
  769.     const cssElm = kRef(ytdFlexy);
  770.     return (cssElm && cssElm.hasAttribute('is-two-columns_'))
  771.   }
  772.  
  773.   function isAnyActiveTab() {
  774.     return $('#right-tabs .tab-btn.active').length > 0
  775.   }
  776.  
  777.   function isEngagementPanelExpanded() { //note: not checking the visual elements
  778.     const cssElm = kRef(ytdFlexy);
  779.     return (cssElm && +cssElm.getAttribute('userscript-engagement-panel') > 0)
  780.   }
  781.  
  782.   function engagement_panels_() {
  783.  
  784.     let res = [];
  785.     let shownRes = [];
  786.  
  787.     let v = 0,
  788.       k = 1,
  789.       count = 0;
  790.       
  791.     for (const ePanel of document.querySelectorAll(
  792.       `ytd-watch-flexy ytd-engagement-panel-section-list-renderer[o3r-${sa_epanel}]`
  793.       )) {
  794.  
  795.       let visibility = ePanel.getAttribute('visibility') //ENGAGEMENT_PANEL_VISIBILITY_EXPANDED //ENGAGEMENT_PANEL_VISIBILITY_HIDDEN
  796.  
  797.       switch (visibility) {
  798.         case 'ENGAGEMENT_PANEL_VISIBILITY_EXPANDED':
  799.           v |= k;
  800.           count++;
  801.           shownRes.push(ePanel)
  802.           res.push({ ePanel, k, visible: true });
  803.           break;
  804.         case 'ENGAGEMENT_PANEL_VISIBILITY_HIDDEN':
  805.           res.push({ ePanel, k, visible: false });
  806.           break;
  807.         default:
  808.           res.push({ ePanel, k, visible: false });
  809.       }
  810.  
  811.       k = k << 1;
  812.  
  813.     }
  814.     return { list: res, value: v, count: count, shownRes };
  815.   }
  816.  
  817.  
  818.   function ytBtnOpenEngagementPanel(/** @type {number | string} */ panel_id) {
  819.  
  820.     if (typeof panel_id == 'string') {
  821.       panel_id = panel_id.replace('#engagement-panel-', '');
  822.       panel_id = parseInt(panel_id);
  823.     }
  824.     if (panel_id >= 0) {} else return false;
  825.  
  826.     let panels = engagement_panels_();
  827.  
  828.     for (const { ePanel, k, visible } of panels.list) {
  829.       if ((panel_id & k) === k) {
  830.         if (!visible) ePanel.setAttribute('visibility', "ENGAGEMENT_PANEL_VISIBILITY_EXPANDED");
  831.       } else {
  832.         if (visible) ytBtnCloseEngagementPanel(ePanel);
  833.       }
  834.     }
  835.  
  836.   }
  837.  
  838.   function ytBtnCloseEngagementPanel(/** @type {HTMLElement} */  s) {
  839.     //ePanel.setAttribute('visibility',"ENGAGEMENT_PANEL_VISIBILITY_HIDDEN");
  840.     let btn = s.querySelector('ytd-watch-flexy ytd-engagement-panel-title-header-renderer #header > #visibility-button > ytd-button-renderer');
  841.     if (btn) {
  842.       btn.click();
  843.     }
  844.   }
  845.  
  846.   function ytBtnCloseEngagementPanels() {
  847.     if (isEngagementPanelExpanded()) {
  848.       for (const s of document.querySelectorAll(
  849.         `ytd-watch-flexy ytd-engagement-panel-section-list-renderer[o3r-${sa_epanel}]`
  850.         )) {
  851.         if (s.getAttribute('visibility') == "ENGAGEMENT_PANEL_VISIBILITY_EXPANDED") ytBtnCloseEngagementPanel(s);
  852.       }
  853.     }
  854.   }
  855.  
  856.   function ytBtnSetTheater() {
  857.     if (!isTheater()) {
  858.       const sizeBtn = document.querySelector('ytd-watch-flexy #ytd-player button.ytp-size-button')
  859.       if (sizeBtn) sizeBtn.click();
  860.     }
  861.   }
  862.  
  863.   function ytBtnCancelTheater() {
  864.     if (isTheater()) {
  865.       const sizeBtn = document.querySelector('ytd-watch-flexy #ytd-player button.ytp-size-button')
  866.       if (sizeBtn) sizeBtn.click();
  867.     }
  868.   }
  869.  
  870.   function ytBtnExpandChat() {
  871.     let button = document.querySelector('ytd-live-chat-frame#chat[collapsed] > .ytd-live-chat-frame#show-hide-button')
  872.     if (button) button.querySelector('ytd-toggle-button-renderer').click();
  873.   }
  874.  
  875.   function ytBtnCollapseChat() {
  876.     let button = document.querySelector('ytd-live-chat-frame#chat:not([collapsed]) > .ytd-live-chat-frame#show-hide-button')
  877.     if (button) button.querySelector('ytd-toggle-button-renderer').click();
  878.   }
  879.  
  880. /*
  881.   function hackImgShadow(imgShadow) {
  882.     // add to #columns and add back after loaded
  883.     let img = imgShadow.querySelector('img')
  884.     if (!img) return;
  885.  
  886.     let p = imgShadow.parentNode
  887.     let z = $(imgShadow).clone()[0]; //to occupy the space
  888.     p.replaceChild(z, imgShadow)
  889.     $(imgShadow).prependTo('#columns'); // refer to css hack
  890.  
  891.     function onload(evt) {
  892.       if (evt) this.removeEventListener('load', onload, false)
  893.       p.replaceChild(imgShadow, z)
  894.       p = null;
  895.       z = null;
  896.       imgShadow = null;
  897.     }
  898.  
  899.     if (img.complete) onload();
  900.     else img.addEventListener('load', onload, false)
  901.   }
  902.   */
  903.  
  904.  
  905.   const Q = {}
  906.  
  907.  
  908.  
  909.   function chatFrameContentDocument() {
  910.     // non-null if iframe exist && contentDocument && readyState = complete
  911.     /** @type {HTMLIFrameElement | null} */ 
  912.     let iframe = document.querySelector('ytd-live-chat-frame iframe#chatframe');
  913.     if (!iframe) return null; //iframe must be there
  914.     /** @type {Document | null} */ 
  915.     let cDoc = null;
  916.     try {
  917.       cDoc = iframe.contentDocument;
  918.     } catch (e) {}
  919.     if (!cDoc) return null;
  920.     if (cDoc.readyState != 'complete') return null; //we must wait for its completion
  921.  
  922.     return cDoc;
  923.  
  924.   }
  925.  
  926.   function chatFrameElement(/** @type {string} */ cssSelector) {
  927.     let cDoc = chatFrameContentDocument();
  928.     if (!cDoc) return null;
  929.     /** @type {HTMLElement | null} */ 
  930.     let elm = null;
  931.     try {
  932.       elm = cDoc.querySelector(cssSelector)
  933.     } catch (e) {
  934.       console.log('iframe error', e)
  935.     }
  936.     return elm;
  937.   }
  938.  
  939.  
  940.  
  941.  
  942.   function fixTabs() {
  943.  
  944.  
  945.     if (!scriptEnable) return;
  946.  
  947.  
  948.     let queryElement = document.querySelector('*:not(#tab-videos) > #related:not([non-placeholder-videos]) > ytd-watch-next-secondary-results-renderer')
  949.  
  950.     let isRelocated = !!queryElement;
  951.  
  952.  
  953.  
  954.     if (isRelocated) {
  955.  
  956.       let relocatedRelated = queryElement.parentNode; // NOT NULL
  957.  
  958.       let right_tabs = document.querySelector('#right-tabs');
  959.       let tab_videos = right_tabs.querySelector("#tab-videos");
  960.  
  961.       if (!right_tabs || !tab_videos) return;
  962.  
  963.       for (const s of relocatedRelated.querySelectorAll('#related')) {
  964.         s.setAttribute('non-placeholder-videos', '')
  965.       }
  966.  
  967.       let target_container = document.querySelector('ytd-watch-flexy:not([is-two-columns_]) #primary-inner, ytd-watch-flexy[is-two-columns_] #secondary-inner')
  968.  
  969.       if (target_container) target_container.append(right_tabs) // last-child
  970.  
  971.  
  972.       let videos_related = relocatedRelated; // NOT NULL
  973.       $('[placeholder-videos]').removeAttr('placeholder-videos');
  974.       $('[placeholder-for-youtube-play-next-queue]').removeAttr('placeholder-for-youtube-play-next-queue');
  975.  
  976.       tab_videos.appendChild(videos_related);
  977.       let videos_results_renderer = relocatedRelated.querySelector("ytd-watch-next-secondary-results-renderer");
  978.       if (videos_results_renderer) videos_results_renderer.setAttribute('data-dom-changed-by-tabview-youtube', scriptVersionForExternal);
  979.       videos_related.setAttribute('placeholder-for-youtube-play-next-queue', '')
  980.       videos_related.setAttribute('placeholder-videos', '')
  981.  
  982.       $('[placeholder-videos]').on("scroll", makeBodyScrollByEvt);
  983.  
  984.  
  985.  
  986.  
  987.     }
  988.  
  989.  
  990.  
  991.     /** @type {HTMLElement | null} */ 
  992.     let chatroom = null;
  993.     if (chatroom = document.querySelector('*:not([data-positioner="before|#chat"]) + ytd-live-chat-frame#chat, ytd-live-chat-frame#chat:first-child')) {
  994.  
  995.       let positioner = document.querySelector('tabview-youtube-positioner[data-positioner="before|#chat"]');
  996.       if (positioner) positioner.remove();
  997.  
  998.  
  999.       if (document.querySelector('.YouTubeLiveFilledUpView')) {
  1000.         // no relocation
  1001.       } else {
  1002.  
  1003.         $(chatroom).insertBefore('#right-tabs')
  1004.  
  1005.       }
  1006.  
  1007.  
  1008.       $(positioner ? positioner : document.createElement('tabview-youtube-positioner')).attr('data-positioner', 'before|#chat').insertBefore(chatroom)
  1009.  
  1010.  
  1011.  
  1012.     }
  1013.  
  1014.  
  1015.   }
  1016.  
  1017.   function handlerAutoCompleteExist() {
  1018.  
  1019.  
  1020.     /** @type {HTMLElement} */ 
  1021.     let autoComplete = this;
  1022.  
  1023.     autoComplete.removeEventListener('autocomplete-sc-exist', handlerAutoCompleteExist, false)
  1024.  
  1025.     let domId = autoComplete.getAttribute('data-autocomplete-input-id')
  1026.     let searchBox = autoComplete.ownerDocument.querySelector(`[data-autocomplete-results-id="${domId}"]`)
  1027.  
  1028.     if (!domId || !searchBox) return;
  1029.  
  1030.     let positioner = searchBox.nextSibling;
  1031.     if (positioner && positioner.nodeName.toLowerCase() == "autocomplete-positioner") {} else if (positioner && positioner.nodeName.toLowerCase() != "autocomplete-positioner") {
  1032.       $(positioner = document.createElement("autocomplete-positioner")).insertAfter(searchBox);
  1033.     } else {
  1034.       $(positioner = document.createElement("autocomplete-positioner")).prependTo(searchBox.parentNode);
  1035.     }
  1036.     $(autoComplete).prependTo(positioner);
  1037.  
  1038.     positioner.style.setProperty('--sb-margin-bottom', getComputedStyle(searchBox).marginBottom)
  1039.     positioner.style.setProperty('--height', searchBox.offsetHeight + 'px')
  1040.  
  1041.   }
  1042.  
  1043.   function mtf_fixAutoCompletePosition(/** @type {HTMLElement} */ elmAutoComplete) {
  1044.  
  1045.  
  1046.     elmAutoComplete.setAttribute('autocomplete-disable-updatesc', '')
  1047.     elmAutoComplete.addEventListener('autocomplete-sc-exist', handlerAutoCompleteExist, false)
  1048.  
  1049.     if(document.querySelector('script#userscript-tabview-injection-facp')) return;
  1050.  
  1051.     if (isMyScriptInChromeRuntime()){
  1052.       addScriptByURL(window.chrome.runtime.getURL('js/injectionScript_fixAutoComplete.js')).id = 'userscript-tabview-injection-facp';;
  1053.     } else {
  1054.       let injection_script = GM_getResourceText("injectionFixAutoComplete")
  1055.       addScript(`${injection_script}`).id = 'userscript-tabview-injection-facp';;
  1056.     }
  1057.  
  1058.   }
  1059.  
  1060.   function mtf_AfterFixTabs() {
  1061.  
  1062.  
  1063.     /** @type {HTMLElement | null} */ 
  1064.     let ytdFlexyElm = kRef(ytdFlexy);
  1065.     if (!scriptEnable || !ytdFlexyElm) return;
  1066.  
  1067.     /** @type {HTMLElement | null} */
  1068.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1069.  
  1070.  
  1071.  
  1072.     const autocomplete = rootElement.querySelector('[placeholder-for-youtube-play-next-queue] input#suggestions-search + autocomplete-positioner > .autocomplete-suggestions[data-autocomplete-input-id]:not([position-fixed-by-tabview-youtube])')
  1073.  
  1074.     if (autocomplete) {
  1075.  
  1076.       const searchBox = document.querySelector('[placeholder-for-youtube-play-next-queue] input#suggestions-search')
  1077.  
  1078.  
  1079.       if (searchBox) {
  1080.  
  1081.  
  1082.         autocomplete.parentNode.setAttribute('position-fixed-by-tabview-youtube', '');
  1083.         autocomplete.setAttribute('position-fixed-by-tabview-youtube', '');
  1084.         autocomplete.setAttribute('userscript-scrollbar-render', '')
  1085.  
  1086.         if (!searchBox.hasAttribute('is-set-click-to-toggle')) {
  1087.           searchBox.setAttribute('is-set-click-to-toggle', '')
  1088.           searchBox.addEventListener('click', function() {
  1089.  
  1090.  
  1091.             setTimeout(() => {
  1092.               const autocomplete = document.querySelector(`.autocomplete-suggestions[data-autocomplete-input-id="${ this.getAttribute('data-autocomplete-results-id') }"]`)
  1093.  
  1094.               if (!autocomplete) return;
  1095.  
  1096.               const isNotEmpty = (autocomplete.textContent || '').length > 0 && (this.value || '').length > 0;
  1097.  
  1098.               if (isNotEmpty) {
  1099.  
  1100.                 let elmVisible = isDOMVisible(autocomplete)
  1101.  
  1102.                 if (elmVisible) $(autocomplete).hide();
  1103.                 else $(autocomplete).show();
  1104.  
  1105.               }
  1106.  
  1107.             }, 20);
  1108.  
  1109.           })
  1110.  
  1111.           let timeoutOnce_searchbox_keyup = new Timeout();
  1112.           searchBox.addEventListener('keyup', function() {
  1113.  
  1114.             timeoutOnce_searchbox_keyup.set(() => {
  1115.  
  1116.               const autocomplete = document.querySelector(`.autocomplete-suggestions[data-autocomplete-input-id="${ this.getAttribute('data-autocomplete-results-id') }"]`)
  1117.  
  1118.               if (!autocomplete) return;
  1119.  
  1120.  
  1121.               const isNotEmpty = (autocomplete.textContent || '').length > 0 && (this.value || '').length > 0
  1122.  
  1123.               if (isNotEmpty) {
  1124.  
  1125.                 let elmVisible = isDOMVisible(autocomplete)
  1126.  
  1127.                 if (!elmVisible) $(autocomplete).show();
  1128.  
  1129.               }
  1130.  
  1131.             }, 20);
  1132.  
  1133.           })
  1134.  
  1135.         }
  1136.  
  1137.  
  1138.  
  1139.       }
  1140.  
  1141.     }
  1142.  
  1143.  
  1144.  
  1145.  
  1146.     let currentLastVideo = rootElement.querySelector('[placeholder-videos] #items ytd-compact-video-renderer:last-of-type')
  1147.     let prevLastVideo = kRef(_cachedLastVideo);
  1148.  
  1149.     if (prevLastVideo !== currentLastVideo && currentLastVideo) {
  1150.       _cachedLastVideo = mWeakRef(currentLastVideo);
  1151.     }
  1152.  
  1153.     if (prevLastVideo !== currentLastVideo && currentLastVideo && prevLastVideo) {
  1154.  
  1155.       let isPrevRemoved = !prevLastVideo.parentNode
  1156.  
  1157.  
  1158.       function getVideoListHash() {
  1159.  
  1160.         let res = [...document.querySelectorAll('[placeholder-videos] #items ytd-compact-video-renderer')].map(renderer => {
  1161.           return renderer.querySelector('a[href*="watch"][href*="v="]').getAttribute('href')
  1162.  
  1163.         }).join('|')
  1164.         // /watch?v=XXXXX|/watch?v=XXXXXX|/watch?v=XXXXXX
  1165.  
  1166.         // alternative - DOM.data.videoId
  1167.         // let elms = document.querySelectorAll('[placeholder-videos] #items ytd-compact-video-renderer')
  1168.         // let res = [...elms].map(elm=>elm.data.videoId||'').join('|') ;
  1169.  
  1170.         if (res.indexOf('||') >= 0) {
  1171.           res = '';
  1172.         }
  1173.  
  1174.         return res ? res : null;
  1175.       }
  1176.  
  1177.       if (isPrevRemoved) {
  1178.  
  1179.         // this is the replacement of videos instead of addition
  1180.  
  1181.         const searchBox = document.querySelector('[placeholder-for-youtube-play-next-queue] input#suggestions-search')
  1182.  
  1183.         let currentPlayListHash = getVideoListHash() || null;
  1184.  
  1185.         if (!currentPlayListHash) {
  1186.  
  1187.         } else if (!videoListBeforeSearch && searchBox) {
  1188.  
  1189.           videoListBeforeSearch = currentPlayListHash;
  1190.           if (videoListBeforeSearch) {
  1191.             //console.log('fromSearch', videoListBeforeSearch)
  1192.  
  1193.             requestAnimationFrame(function() {
  1194.  
  1195.               let renderer = document.querySelector('[placeholder-videos] ytd-watch-next-secondary-results-renderer');
  1196.               if (searchBox && searchBox.parentNode) searchBox.blur();
  1197.  
  1198.               if (renderer) {
  1199.                 let scrollParent = renderer.parentNode;
  1200.                 if (scrollParent.scrollHeight > scrollParent.offsetHeight) {
  1201.                   let targetTop = renderer.offsetTop;
  1202.                   if (searchBox && searchBox.parentNode == scrollParent) targetTop -= searchBox.offsetHeight
  1203.                   scrollParent.scrollTop = targetTop - scrollParent.firstChild.offsetTop;
  1204.                 }
  1205.               }
  1206.  
  1207.             });
  1208.  
  1209.           }
  1210.  
  1211.         } else if (videoListBeforeSearch) {
  1212.  
  1213.           if (currentPlayListHash != videoListBeforeSearch) {
  1214.  
  1215.             videoListBeforeSearch = null;
  1216.             //console.log('fromSearch', videoListBeforeSearch)
  1217.  
  1218.  
  1219.           }
  1220.  
  1221.         }
  1222.  
  1223.  
  1224.       }
  1225.  
  1226.  
  1227.     }
  1228.  
  1229.  
  1230.  
  1231.  
  1232.   }
  1233.  
  1234.   function base_ChatExist() {
  1235.  
  1236.     let ytdFlexyElm = kRef(ytdFlexy);
  1237.     if (!scriptEnable || !ytdFlexyElm) return null;
  1238.  
  1239.     // no mutation triggering if the changes are inside the iframe 
  1240.  
  1241.     // 1) Detection of #continuations inside iframe
  1242.     // iframe ownerDocument is accessible due to same origin
  1243.     // if the chatroom is collasped, no determination of live chat or replay (as no #continuations and somehow a blank iframe doc)
  1244.  
  1245.     // 2) Detection of meta tag
  1246.     // This is fastest but not reliable. It is somehow a bug that the navigation might not update the meta tag content
  1247.  
  1248.     // 3) Detection of HTMLElement inside video player for live video
  1249.  
  1250.     // (1)+(3) = solution
  1251.  
  1252.     let attr_chatblock = null
  1253.     let attr_chatcollapsed = null;
  1254.  
  1255.     const elmChat = document.querySelector('ytd-live-chat-frame#chat')
  1256.     let elmCont = null;
  1257.     if (elmChat) {
  1258.       elmCont = chatFrameElement('yt-live-chat-renderer #continuations')
  1259.  
  1260.  
  1261.       let s = 0;
  1262.       if (elmCont) {
  1263.         //not found if it is collasped.
  1264.         s |= elmCont.querySelector('yt-timed-continuation') ? 1 : 0;
  1265.         s |= elmCont.querySelector('yt-live-chat-replay-continuation, yt-player-seek-continuation') ? 2 : 0;
  1266.         //s |= elmCont.querySelector('yt-live-chat-restricted-participation-renderer')?4:0;
  1267.         if (s == 1) {
  1268.           attr_chatblock = 'chat-live';
  1269.         }else if (s == 2) attr_chatblock = 'chat-playback';
  1270.  
  1271.         if (s == 1) $("span#tab3-txt-loader").text('');
  1272.  
  1273.       } else if (!ytdFlexyElm.hasAttribute('userscript-chatblock')) {
  1274.         // live chat frame but type not known
  1275.           
  1276.         attr_chatblock = '';
  1277.  
  1278.       }
  1279.       //keep unknown as original    
  1280.       
  1281.       
  1282.       let isCollapsed = !!elmChat.hasAttribute('collapsed');
  1283.       attr_chatcollapsed = isCollapsed;
  1284.  
  1285.     } else {
  1286.       attr_chatblock = false;
  1287.       attr_chatcollapsed = false;
  1288.  
  1289.     }
  1290.  
  1291.     return { attr_chatblock, attr_chatcollapsed }
  1292.  
  1293.   }
  1294.  
  1295.  
  1296.   function mtf_ChatExist() {
  1297.  
  1298.     let ytdFlexyElm = kRef(ytdFlexy);
  1299.     if (!scriptEnable || !ytdFlexyElm) return;
  1300.  
  1301.     if (deferredVarYTDHidden) return;
  1302.  
  1303.     const elmChat = document.querySelector('ytd-live-chat-frame#chat')
  1304.     let elmCont = null;
  1305.     if (elmChat) {
  1306.       elmCont = chatFrameElement('yt-live-chat-renderer #continuations')
  1307.     }
  1308.  
  1309.     const chatBlockR = (elmChat ? 1 : 0) + (elmCont ? 2 : 0)
  1310.     if (Q.mtf_chatBlockQ !== chatBlockR) {
  1311.       Q.mtf_chatBlockQ = chatBlockR
  1312.       let rChatExist = base_ChatExist();
  1313.       //console.log(2446, rChatExist)
  1314.       if (rChatExist) {
  1315.         let { attr_chatblock, attr_chatcollapsed } = rChatExist;
  1316.         wAttr(ytdFlexyElm, 'userscript-chatblock', attr_chatblock)
  1317.         wAttr(ytdFlexyElm, 'userscript-chat-collapsed', attr_chatcollapsed)
  1318.         
  1319.         if(attr_chatblock=='chat-live') _disableComments();
  1320.       }
  1321.     }
  1322.  
  1323.   }
  1324.  
  1325.  
  1326.  
  1327.  
  1328.   let lastScrollAt1 = 0;
  1329.  
  1330.   function makeBodyScrollByEvt() {
  1331.     let ct = Date.now();
  1332.     if (ct - lastScrollAt1 < 6) return; // avoid duplicate calling
  1333.     lastScrollAt1 = ct;
  1334.     window.dispatchEvent(new Event("scroll")); // dispatch Scroll Event to Window for content display
  1335.   }
  1336.  
  1337.   let lastScrollAt2 = 0;
  1338.  
  1339.   function makeBodyScroll() {
  1340.     let ct = Date.now();
  1341.     if (ct - lastScrollAt2 < 30) return; // avoid over triggering
  1342.     lastScrollAt2 = ct;
  1343.     requestAnimationFrame(() => {
  1344.       window.dispatchEvent(new Event("scroll")); // ask youtube to display content
  1345.     })
  1346.   }
  1347.  
  1348.   //let requestingComments = null
  1349.   //let scrollForComments_lastStart = 0;
  1350.    /*
  1351.   function scrollForComments_TF() {
  1352.  
  1353.     let comments = requestingComments;
  1354.     if (!comments) return;
  1355.     if (comments.hasAttribute('hidden')) {
  1356.       window.dispatchEvent(new Event("scroll"));
  1357.     } else requestingComments = null;
  1358.  
  1359.   }
  1360.   function scrollForComments() {
  1361.     scrollForComments_TF();
  1362.     if (!requestingComments) return;
  1363.     requestAnimationFrame(scrollForComments_TF);
  1364.     let ct = Date.now();
  1365.     if (ct - scrollForComments_lastStart < 60) return;
  1366.     scrollForComments_lastStart = ct;
  1367.     timeline.setTimeout(scrollForComments_TF, 80);
  1368.     timeline.setTimeout(scrollForComments_TF, 240);
  1369.     timeline.setTimeout(scrollForComments_TF, 870);
  1370.   
  1371.   }
  1372.   */
  1373.  
  1374.  
  1375.  
  1376.   const mtoCs = { mtoNav: null, mtoBody: null };
  1377.  
  1378.  
  1379.   const mtoVs = {}
  1380.  
  1381.   const mutation_target_id_list = ['ytp-caption-window-container', 'items', 'button', 'movie_player', 'player-ads', 'hover-overlays', 'replies'];
  1382.   const mutation_target_class_list = ['ytp-panel-menu', 'ytp-endscreen-content'];
  1383.  
  1384.   function isMtoOverallSkip(dTarget) {
  1385.  
  1386.     if (!dTarget || dTarget.nodeType !== 1) return true;
  1387.  
  1388.     if (mutation_target_id_list.includes(dTarget.id)) return true;
  1389.  
  1390.     for (const c of dTarget.classList) {
  1391.       if (mutation_target_class_list.includes(c)) return true;
  1392.     }
  1393.  
  1394.     return false;
  1395.   }
  1396.  
  1397.  
  1398.   const mutation_div_id_ignorelist = [
  1399.         'metadata-line',
  1400.         'ytp-caption-window-container',
  1401.         'top-level-buttons-computed',
  1402.         'microformat',
  1403.         'visibility-button',
  1404.         'info-strings',
  1405.         'action-menu',
  1406.         'reply-button-end'
  1407.     ];
  1408.  
  1409.   const mutation_div_class_ignorelist = [
  1410.         'badge', 'tp-yt-paper-tooltip', 'ytp-autonav-endscreen-upnext-header',
  1411.         'ytp-bound-time-left', 'ytp-bound-time-right', 'ytp-share-icon',
  1412.         'ytp-tooltip-title', 'annotation', 'ytp-copylink-icon', 'ytd-thumbnail',
  1413.         'paper-ripple',
  1414.         //caption
  1415.         'captions-text', 'caption-visual-line', 'ytp-caption-segment', 'ytp-caption-window-container',
  1416.         //menu
  1417.         'ytp-playlist-menu-button-text',
  1418.  
  1419.         'ytp-bezel-icon', 'ytp-bezel-text',
  1420.         'dropdown-content',
  1421.         'tp-yt-paper-menu-button', 'tp-yt-iron-dropdown',
  1422.  
  1423.         'ytd-metadata-row-renderer', // #content.ytd-metadata-row-renderer inside each of ytd-metadata-row-renderer (ytd-expander)
  1424.         '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
  1425.  
  1426.         'autocomplete-suggestions' // autocomplete-suggestions
  1427.     ];
  1428.  
  1429.   const mutation_target_tag_ignorelist = [
  1430.         'ytd-channel-name', 'tp-yt-iron-dropdown', 'tp-yt-paper-tooltip',
  1431.         'tp-yt-paper-listbox', 'yt-img-shadow', 'ytd-thumbnail', 'ytd-video-meta-block',
  1432.  
  1433.         'yt-icon-button', 'tp-yt-paper-button', 'yt-formatted-string', 'yt-icon', 'button', 'paper-ripple',
  1434.  
  1435.         'ytd-player-microformat-renderer',
  1436.         'ytd-engagement-panel-section-list-renderer', 'ytd-engagement-panel-title-header-renderer',
  1437.         'ytd-comment-renderer', 'ytd-menu-renderer', 'ytd-badge-supported-renderer',
  1438.         'ytd-subscribe-button-renderer', 'ytd-subscription-notification-toggle-button-renderer',
  1439.         'ytd-button-renderer', 'ytd-toggle-button-renderer',
  1440.         'yt-pdg-comment-chip-renderer', 'ytd-comment-action-buttons-renderer', 'ytd-comment-thread-renderer',
  1441.         'ytd-compact-radio-renderer', 'ytd-compact-video-renderer',
  1442.         'ytd-video-owner-renderer',
  1443.         'ytd-metadata-row-renderer', //ytd-metadata-row-renderer is part of the #collapsible inside ytd-expander
  1444.  
  1445.         'ytd-moving-thumbnail-renderer',
  1446.         'ytd-thumbnail-overlay-toggle-button-renderer',
  1447.         'ytd-thumbnail-overlay-bottom-panel-renderer', 'ytd-thumbnail-overlay-equalizer',
  1448.         'ytd-thumbnail-overlay-now-playing-renderer', 'ytd-thumbnail-overlay-resume-playback-renderer',
  1449.         'ytd-thumbnail-overlay-side-panel-renderer', 'ytd-thumbnail-overlay-time-status-renderer',
  1450.         'ytd-thumbnail-overlay-hover-text-renderer',
  1451.  
  1452.         'yt-interaction',
  1453.         'tp-yt-paper-spinner-lite', 'tp-yt-paper-spinner',
  1454.  
  1455.         'h1', 'h2', 'h3', 'h4', 'h5', 'span', 'a',
  1456.  
  1457.         'meta', 'br', 'script', 'style', 'link', 'dom-module', 'template'
  1458.     ];
  1459.  
  1460.   function isMtoTargetSkip(mutation) {
  1461.     //skip not important mutation tartget
  1462.  
  1463.     if (!mutation) return true;
  1464.     let { type, target } = mutation
  1465.  
  1466.     if (!target || target.nodeType !== 1 || type != 'childList') return true;
  1467.  
  1468.     let tagName = target.nodeName.toLowerCase();
  1469.  
  1470.     if (mutation_target_tag_ignorelist.includes(tagName)) return true;
  1471.  
  1472.     switch (tagName) {
  1473.  
  1474.  
  1475.       case 'ytd-expander':
  1476.         if (target.id == 'expander' && Q.comments_section_loaded == 1 && target.classList.contains('ytd-comment-renderer')) return true; // load comments
  1477.         return false;
  1478.  
  1479.       case 'div':
  1480.  
  1481.         if (target.id == 'contents') {
  1482.           return false;
  1483.         }
  1484.         if (mutation_div_id_ignorelist.includes(target.id)) return true;
  1485.  
  1486.         for (const c of target.classList) {
  1487.           if (mutation_div_class_ignorelist.includes(c)) return true;
  1488.         }
  1489.  
  1490.         return false;
  1491.  
  1492.     }
  1493.  
  1494.     return false;
  1495.  
  1496.   }
  1497.  
  1498.  
  1499.   function mtf_forceCheckLiveVideo() {
  1500.     // once per $$player-playback-timestamp$$ {#ytd-player .ytp-time-display} &&  $$chat-frame$$ {ytd-live-chat-frame#chat} detection
  1501.     // reset after popstatechange / videochange
  1502.  
  1503.     if(mtf_forceCheckLiveVideo_disable) return ;
  1504.  
  1505.     let ytdFlexyElm = kRef(ytdFlexy);
  1506.     if (!scriptEnable || !ytdFlexyElm) return ;
  1507.  
  1508.     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')
  1509.     if (!playerLabel) return ;
  1510.     mtf_forceCheckLiveVideo_disable = 1;
  1511.     timeline.setTimeout(FP.fireOnce_forceCheckLiveVideo_tf, 170)
  1512.     return ;
  1513.   }
  1514.  
  1515.   // continuous check for element relocation
  1516.   function mtf_append_comments() {
  1517.     
  1518.     /** @type {HTMLElement | null} */
  1519.     let ytdFlexyElm = kRef(ytdFlexy);
  1520.     if (!scriptEnable || !ytdFlexyElm) return;
  1521.  
  1522.     /** @type {HTMLElement | null} */
  1523.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1524.  
  1525.     let comments = rootElement.querySelector('#primary ytd-watch-metadata ~ ytd-comments#comments');
  1526.     if (comments) $(comments).appendTo('#tab-comments').attr('data-dom-changed-by-tabview-youtube', scriptVersionForExternal)
  1527.   }
  1528.  
  1529.   // continuous check for element relocation
  1530.   function mtf_liveChatBtnF() {
  1531.     
  1532.     /** @type {HTMLElement | null} */
  1533.     let ytdFlexyElm = kRef(ytdFlexy);
  1534.     if (!scriptEnable || !ytdFlexyElm) return;
  1535.  
  1536.     /** @type {HTMLElement | null} */
  1537.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1538.  
  1539.     let button = rootElement.querySelector('ytd-live-chat-frame#chat > .ytd-live-chat-frame#show-hide-button:nth-child(n+2)');
  1540.     if (button) button.parentNode.insertBefore(button, button.parentNode.firstChild)
  1541.   }
  1542.  
  1543.  
  1544.  
  1545.   // continuous check for element relocation
  1546.   // fired at begining & window resize, etc
  1547.   function mtf_append_playlist() {
  1548.  
  1549.     /** @type {HTMLElement | null} */
  1550.     let ytdFlexyElm = kRef(ytdFlexy);
  1551.     if (!scriptEnable || !ytdFlexyElm) return;
  1552.  
  1553.     /** @type {HTMLElement | null} */
  1554.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1555.  
  1556.     let ple1 = rootElement.querySelector("*:not(#ytd-userscript-playlist) > ytd-playlist-panel-renderer#playlist");
  1557.     if (ple1) {
  1558.       let ct = Date.now();
  1559.       let truePlaylist = null;
  1560.       let truePlaylist_items = document.querySelector('ytd-playlist-panel-renderer#playlist #items:not(:empty)');
  1561.       if (truePlaylist_items) {
  1562.  
  1563.         let pElm = truePlaylist_items.parentNode;
  1564.         while (pElm && pElm.nodeType === 1) {
  1565.           if (pElm.id == 'playlist') {
  1566.             pElm.setAttribute('tabview-true-playlist', ct)
  1567.             truePlaylist = pElm;
  1568.             break;
  1569.           }
  1570.           pElm = pElm.parentNode;
  1571.         }
  1572.  
  1573.       }
  1574.  
  1575.       if (!truePlaylist) truePlaylist = ple1; // NOT NULL
  1576.  
  1577.       for (const s of document.querySelectorAll(`*:not(#ytd-userscript-playlist) > ytd-playlist-panel-renderer#playlist:not([tabview-true-playlist="${ct}"])`))
  1578.         s.parentNode.removeChild(s);
  1579.  
  1580.       let $wrapper = getWrapper('ytd-userscript-playlist')
  1581.       $wrapper.append(truePlaylist).appendTo(document.querySelector("#tab-list"));
  1582.       truePlaylist.setAttribute('data-dom-changed-by-tabview-youtube', scriptVersionForExternal)
  1583.       setDisplayedPlaylist(); // relocation after re-layout
  1584.  
  1585.       requestAnimationFrame(() => {
  1586.         let ytdFlexyElm = kRef(ytdFlexy);
  1587.         if (!scriptEnable || !ytdFlexyElm) return;
  1588.         if (!switchTabActivity_lastTab && (ytdFlexyElm.getAttribute('tabview-selection') + '').indexOf('#tab-') === 0 && /https\:\/\/www\.youtube\.com\/watch.*[\?\&]list=[\w\-\_]+/.test(location.href)) {
  1589.           if (setToActiveTab('#tab-list')) switchTabActivity_lastTab = '#tab-list';
  1590.         }
  1591.       })
  1592.  
  1593.     }
  1594.   }
  1595.  
  1596.  
  1597.   // content fix - info & playlist
  1598.   // fired at begining, and keep for in case any change
  1599.   function mtf_fix_details() {
  1600.  
  1601.     if (!scriptEnable) return;
  1602.  
  1603.     if (no_fix_contents_until < Date.now()) {
  1604.       const content = document.querySelector('#meta-contents ytd-expander > #content, #tab-info ytd-expander > #content')
  1605.       if (content) {
  1606.         no_fix_contents_until = Date.now() + 3000;
  1607.         timeline.setTimeout(function() {
  1608.           const expander = content.parentNode;
  1609.  
  1610.           if (expander.hasAttribute('collapsed')) wAttr(expander, 'collapsed', false);
  1611.           expander.style.setProperty('--ytd-expander-collapsed-height', '');
  1612.  
  1613.           let btn1 = expander.querySelector('tp-yt-paper-button#less:not([hidden])');
  1614.           let btn2 = expander.querySelector('tp-yt-paper-button#more:not([hidden])');
  1615.  
  1616.           if (btn1) wAttr(btn1, 'hidden', true);
  1617.           if (btn2) wAttr(btn2, 'hidden', true);
  1618.         }, 40);
  1619.  
  1620.       }
  1621.     }
  1622.  
  1623.     if (no_fix_playlist_until < Date.now()) {
  1624.       // just in case the playlist is collapsed
  1625.       const playlist = document.querySelector('#tab-list ytd-playlist-panel-renderer#playlist')
  1626.       if (playlist) {
  1627.         no_fix_playlist_until = Date.now() + 3000;
  1628.         timeline.setTimeout(function() {
  1629.           if (playlist.hasAttribute('collapsed')) wAttr(playlist, 'collapsed', false);
  1630.           if (playlist.hasAttribute('collapsible')) wAttr(playlist, 'collapsible', false);
  1631.         }, 40)
  1632.       }
  1633.     }
  1634.  
  1635.  
  1636.   }
  1637.  
  1638.  
  1639.  
  1640.   function isNullComments() {
  1641.  
  1642.     let comments = document.querySelector('ytd-comments#comments')
  1643.     if (!comments || comments.hasAttribute('hidden')) return true;
  1644.  
  1645.   }
  1646.  
  1647.   function _innerCommentsLoader( /** @type {HTMLElement} */ rootElement) {
  1648.  
  1649.     /** @type {HTMLElement | null} */
  1650.     let ytdFlexyElm = kRef(ytdFlexy);
  1651.     if (!scriptEnable || !ytdFlexyElm) return;
  1652.     
  1653.     if (deferredVarYTDHidden) return;
  1654.  
  1655.  
  1656.     let messageElm, messageStr, commentRenderer;
  1657.     let diffCSS = `[tabview-cache-time="${sect_hTime}"]`
  1658.  
  1659.     if (commentRenderer = rootElement.querySelector(`ytd-comments#comments #count.ytd-comments-header-renderer:not(${diffCSS})`)) {
  1660.  
  1661.       scheduledCommentRefresh=false;
  1662.       let eTime = Date.now();
  1663.  
  1664.       sect_holder = mWeakRef(commentRenderer);
  1665.       sect_hText = commentRenderer.textContent;
  1666.       sect_hTime = eTime;
  1667.       commentRenderer.setAttribute('tabview-cache-time', eTime);
  1668.  
  1669.       return {
  1670.         status: 1,
  1671.         f: () => {
  1672.  
  1673.           let span = document.querySelector("span#tab3-txt-loader")
  1674.           let r = '0';
  1675.           let txt = commentRenderer.textContent
  1676.           if (typeof txt == 'string') {
  1677.             let m = txt.match(/[\d\,\s]+/)
  1678.             if (m) {
  1679.               r = m[0].trim()
  1680.  
  1681.  
  1682.             }
  1683.           }
  1684.           
  1685.           if (span){
  1686.  
  1687.             let tab_btn = span.closest('.tab-btn[userscript-tab-content="#tab-comments"]')
  1688.             if(tab_btn)tab_btn.setAttribute('loaded-comment','normal')
  1689.             span.textContent = r;
  1690.           } 
  1691.           //console.log(754)
  1692.           mtoInterval = mtoInterval2;
  1693.           scheduledCommentRefresh=false;
  1694.           setCommentSection(1);
  1695.           comments_section_loaded_elm = mWeakRef(document.querySelector('ytd-comments#comments div#contents'))
  1696.         }
  1697.       }
  1698.  
  1699.     } else if ((messageElm = rootElement.querySelector(`ytd-item-section-renderer#sections #header ~ #contents > ytd-message-renderer:not(${diffCSS})`)) && (messageStr = (messageElm.textContent || '').trim())) { //ytd-message-renderer
  1700.       // it is possible to get the message before the header generation.
  1701.       // sample link - https://www.youtube.com/watch?v=PVUZ8Nvr1ic
  1702.       // sample link - https://www.youtube.com/watch?v=yz8AiQc1Bk8
  1703.  
  1704.       scheduledCommentRefresh=false;
  1705.       let eTime = Date.now();
  1706.  
  1707.       sect_holder = mWeakRef(messageElm);
  1708.       sect_hText = messageElm.textContent;
  1709.       sect_hTime = eTime;
  1710.       messageElm.setAttribute('tabview-cache-time', eTime);
  1711.  
  1712.       return {
  1713.         status: 2,
  1714.         f: () => {
  1715.           timeline.setTimeout(function() {
  1716.             let span = document.querySelector("span#tab3-txt-loader")
  1717.             const mainMsg = messageElm.querySelector('#message, #submessage')
  1718.             if (mainMsg && mainMsg.textContent) {
  1719.               for (const msg of mainMsg.querySelectorAll('*:not(:empty)')) {
  1720.                 if (msg.childElementCount === 0 && msg.textContent) {
  1721.                   messageStr = msg.textContent.trim()
  1722.                   break
  1723.                 }
  1724.               }
  1725.             }
  1726.             if (span){
  1727.               let tab_btn = span.closest('.tab-btn[userscript-tab-content="#tab-comments"]')
  1728.               if(tab_btn)tab_btn.setAttribute('loaded-comment','message')
  1729.               span.textContent ='\u200B';
  1730.             } 
  1731.             mtoInterval = mtoInterval2;
  1732.             scheduledCommentRefresh=false;
  1733.             setCommentSection(1);
  1734.             comments_section_loaded_elm = mWeakRef(document.querySelector('ytd-comments#comments div#contents'))
  1735.           }, 40);
  1736.         }
  1737.       }
  1738.  
  1739.     }
  1740.  
  1741.   }
  1742.  
  1743.   const atChange = async ()=>{
  1744.  
  1745.     // call when video change / popstate change / switch back from mini-view
  1746.  
  1747.     let ytdFlexyElm = kRef(ytdFlexy);
  1748.     if(!ytdFlexyElm) return;
  1749.  
  1750.     mtf_forceCheckLiveVideo_disable = 0; 
  1751.     mtf_forceCheckLiveVideo();
  1752.  
  1753.     if(Q.comments_section_loaded===0){
  1754.  
  1755.       const tabBtn = document.querySelector('[userscript-tab-content="#tab-comments"].tab-btn-hidden')
  1756.       if(tabBtn) {
  1757.         tabBtn.classList.remove("tab-btn-hidden") //if contains
  1758.       }
  1759.  
  1760.     }
  1761.   }
  1762.  
  1763.  
  1764.  
  1765.   function hookSection(){
  1766.  
  1767.  
  1768.     //console.log(3300)
  1769.  
  1770.     let ytdFlexyElm = kRef(ytdFlexy);
  1771.     if (!scriptEnable || !ytdFlexyElm) return ;
  1772.  
  1773.     const comments = ytdFlexyElm.querySelector('ytd-comments#comments')
  1774.     if (!comments) return ;
  1775.  
  1776.     if(deferredVarYTDHidden) return;
  1777.  
  1778.     //console.log(3310)
  1779.  
  1780.     //new MutationObserver(function(){console.log(comments.querySelectorAll('*').length)}).observe(comments,{ attributes: true, childList: true, subtree: true })
  1781.     
  1782.  
  1783.     function foundSection(sections){
  1784.  
  1785.       
  1786.       //console.log(3320)
  1787.  
  1788.       function ulfx() {
  1789.         //console.log(1220)
  1790.  
  1791.  
  1792.         const rootElement = comments.parentNode
  1793.  
  1794.  
  1795.         if (pendingOne && comments.querySelectorAll('[tabview-cache-time]').length > 1) return;
  1796.         pendingOne = false;
  1797.         if(!rootElement) return; //prevent unknown condition
  1798.         
  1799.  
  1800.  
  1801.         let innerCommentsLoaderRet = _innerCommentsLoader(rootElement);
  1802.  
  1803.         //console.log(1222,_innerCommentsLoader)
  1804.  
  1805.         if (!innerCommentsLoaderRet) {
  1806.  
  1807.  
  1808.           let holder = kRef(sect_holder);
  1809.           if (holder && comments.contains(holder)) {
  1810.  
  1811.             if (sect_lastUpdate) return;
  1812.             sect_lastUpdate = 1;
  1813.  
  1814.             timeline.setTimeout(function() {
  1815.               //console.log(2633)
  1816.               if (holder.textContent !== sect_hText && sect_hTime > 0) {
  1817.  
  1818.                 if (comments.querySelectorAll('[tabview-cache-time]').length === 1) {
  1819.  
  1820.                   sect_hTime--;
  1821.  
  1822.                   let innerCommentsLoaderRet = _innerCommentsLoader(rootElement);
  1823.  
  1824.                   if (innerCommentsLoaderRet) {
  1825.                     //console.log(9442)
  1826.                     innerCommentsLoaderRet.f();
  1827.                     fetchCommentsFinished();
  1828.                   }
  1829.  
  1830.                   pendingOne = false;
  1831.  
  1832.                 }
  1833.  
  1834.  
  1835.               }
  1836.               sect_lastUpdate = 0
  1837.             }, 400)
  1838.  
  1839.           } else if (sect_holder) {
  1840.             sect_holder = null
  1841.             sect_hTime = 0;
  1842.             sect_lastUpdate = 0;
  1843.             pendingOne = false;
  1844.             timeline.setTimeout(()=>{
  1845.               if(!deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0 && comments.hasAttribute('hidden')){
  1846.  
  1847.                 scheduledCommentRefresh=false; // logic tbc
  1848.                 resetCommentSection();
  1849.                 
  1850.               }
  1851.             },142);
  1852.             
  1853.             Q.mutationTarget=null;
  1854.             FP.mtf_attrComments(); // in case for popstate
  1855.           }
  1856.  
  1857.  
  1858.         } else {
  1859.  
  1860.           //console.log(9443)
  1861.           innerCommentsLoaderRet.f();
  1862.           fetchCommentsFinished();
  1863.  
  1864.           pendingOne = true;
  1865.  
  1866.         }
  1867.  
  1868.  
  1869.  
  1870.       }
  1871.  
  1872.       function observerHook(mutationsList, observer){
  1873.  
  1874.         let valid = false
  1875.         for (const mutation of mutationsList) {
  1876.  
  1877.           let target = mutation.target;
  1878.           if (!target) break;
  1879.           if (!target.id) break;
  1880.           let classList = target.classList;
  1881.  
  1882.  
  1883.           if (
  1884.             classList.contains('ytd-item-section-renderer') ||
  1885.             classList.contains('ytd-comments-header-renderer') ||
  1886.             classList.contains('ytd-message-renderer')) {
  1887.             valid = true
  1888.             break;
  1889.           }
  1890.  
  1891.           break; // only outest mutation
  1892.  
  1893.  
  1894.         }
  1895.         if (valid) ulfx();
  1896.       }
  1897.  
  1898.       
  1899.       if(sections.hasAttribute('tabview-comment-section-checked')){
  1900.  
  1901.         //console.log(3612)
  1902.         ulfx();
  1903.         
  1904.  
  1905.       }else{
  1906.  
  1907.         pendingOne = false;
  1908.         //console.log(3611)
  1909.         const observer = new MutationObserver(observerHook)
  1910.         sections.setAttribute('tabview-comment-section-checked','')
  1911.         const config = { childList: true, subtree: true }; 
  1912.         observer.observe(sections, config);
  1913.         ulfx();
  1914.  
  1915.  
  1916.       }
  1917.  
  1918.  
  1919.  
  1920.     }
  1921.     //console.log(3241, location.href)
  1922.     
  1923.     let cid_render_section = timeline.setInterval(function() {
  1924.  
  1925.      // console.log(3244, location.href)
  1926.  
  1927.  
  1928.       const rootElement = comments.parentNode
  1929.  
  1930.       let sections = rootElement.querySelector('ytd-comments#comments > ytd-item-section-renderer#sections');
  1931.  
  1932.  
  1933.       if (sections) {
  1934.  
  1935.         timeline.clearInterval(cid_render_section);
  1936.         foundSection(sections);
  1937.  
  1938.       }
  1939.  
  1940.     }, 30)
  1941.  
  1942.  
  1943.  
  1944.   }
  1945.  
  1946.  
  1947.   let mtc_store=0;
  1948.   let mtc_cid = 0;
  1949.   const cssOnceFunc = {
  1950.     [`ytd-comments#comments:not([o3r-${sa_comments}])`]:(comments)=>{
  1951.       
  1952.       // once per {ytd-comments#comments} detection
  1953.  
  1954.       let ytdFlexyElm = kRef(ytdFlexy);
  1955.       if (!scriptEnable || !ytdFlexyElm) return;
  1956.  
  1957.       if (!comments) return;
  1958.  
  1959.  
  1960.  
  1961.  
  1962.       if(mtoVisibility_Comments.bindElement(comments)){
  1963.         mtoVisibility_Comments.observer.check(9);
  1964.       }
  1965.       
  1966.       pageInit_attrComments = true
  1967.       hookSection();
  1968.  
  1969.       //let dComments = comments
  1970.       //timeline.setTimeout(() => nativeFunc(dComments, "loadComments"), 20)
  1971.       //comments = null;
  1972.  
  1973.     },
  1974.     [`ytd-playlist-panel-renderer#playlist:not([o3r-${sa_playlist}])`]:(playlist)=>{
  1975.  
  1976.         // once per {ytd-playlist-panel-renderer#playlist} detection
  1977.  
  1978.         let ytdFlexyElm = kRef(ytdFlexy);
  1979.         if (!scriptEnable || !ytdFlexyElm) return;
  1980.  
  1981.         if (!playlist) return;
  1982.  
  1983.         if(mtoVisibility_Playlist.bindElement(playlist)){
  1984.           mtoVisibility_Playlist.observer.check(9)  //delay check required for browser bug - hidden changed not triggered 
  1985.         }
  1986.         playlist = null;
  1987.  
  1988.         return;
  1989.  
  1990.     },
  1991.     '#meta-contents ytd-expander:not([tabview-info-expander])':(expander)=>{
  1992.  
  1993.         // once per $$native-info-description$$ {#meta-contents ytd-expander} detection
  1994.  
  1995.         let ytdFlexyElm = kRef(ytdFlexy);
  1996.         if (!scriptEnable || !ytdFlexyElm) return ;
  1997.  
  1998.         if (!expander) return ;
  1999.         expander.setAttribute('tabview-info-expander','')
  2000.         $(expander).appendTo("#tab-info").attr('data-dom-changed-by-tabview-youtube', scriptVersionForExternal)
  2001.   
  2002.   
  2003.  
  2004.     },
  2005.     '#description-and-actions.style-scope.ytd-watch-metadata > #description ytd-text-inline-expander:not([tabview-removed-duplicate])': (teaserInfo)=>{
  2006.  
  2007.  
  2008.       // for Teaser UI
  2009.       // once per {#description-and-actions.style-scope.ytd-watch-metadata > #description > ytd-text-inline-expander} detection
  2010.  
  2011.       let ytdFlexyElm = kRef(ytdFlexy);
  2012.       if (!scriptEnable || !ytdFlexyElm) return ;
  2013.       let addedInfo = document.querySelector('#tab-info ytd-expander[tabview-info-expander]');
  2014.  
  2015.       if(!addedInfo) return;
  2016.  
  2017.       if(!document.documentElement.hasAttribute('tabview-injection-js-1-ready')) return;
  2018.  
  2019.       teaserInfo.setAttribute('tabview-removed-duplicate','')
  2020.  
  2021.  
  2022.       teaserInfo.dispatchEvent(new CustomEvent('tabview-no-duplicate-info'))
  2023.       //console.log(56)
  2024.  
  2025.     }
  2026.   }
  2027.   const cssOnce = Object.keys(cssOnceFunc).join(', ')
  2028.  
  2029.   const regularCheck = (addP, removeP, mutationTarget)=>{
  2030.  
  2031.  
  2032.     let isInvalidAdding = mutationTarget && !mutationTarget.parentNode
  2033.  
  2034.       
  2035.     let promisesForAddition = !scriptEnable ? [] : addP > 0 && !isInvalidAdding ? [
  2036.  
  2037.         (async () => {
  2038.  
  2039.           
  2040.           //$callOnce('mtf_checkFlexy');
  2041.  
  2042.           const rootElement = Q.mutationTarget || kRef(ytdFlexy);
  2043.  
  2044.           if(rootElement){
  2045.  
  2046.             let fElms = rootElement.querySelectorAll(cssOnce)
  2047.             if(fElms.length>0){
  2048.  
  2049.               for(const fElm of fElms){
  2050.                 for(let cssSelctor in cssOnceFunc){
  2051.                   if(fElm.matches(cssSelctor)){
  2052.                     let f= cssOnceFunc[cssSelctor]
  2053.                     if(typeof f=='function') f(fElm);
  2054.                     break;
  2055.                   }
  2056.  
  2057.                 }
  2058.               }
  2059.  
  2060.               //$callOnce('mtf_initalAttr_comments');
  2061.               //$callOnce('mtf_initalAttr_playlist');
  2062.               // $callOnce('mtf_checkDescriptionLoaded');
  2063.             }
  2064.  
  2065.           }
  2066.  
  2067.         })(),
  2068.     
  2069.         (async () => {
  2070.  
  2071.  
  2072.           FP.mtf_initalAttr_chatroom();
  2073.           FP.mtf_initalAttr_engagement_panel();
  2074.           
  2075.           //$callOnce('mtf_initalAttr_chatroom');
  2076.          // $callOnce('mtf_initalAttr_engagement_panel');
  2077.  
  2078.           mtf_forceCheckLiveVideo();
  2079.             mtf_append_comments();
  2080.             mtf_liveChatBtnF();
  2081.             fixTabs();
  2082.             mtf_AfterFixTabs();
  2083.             mtf_append_playlist();
  2084.  
  2085.         })()
  2086.  
  2087.     ] : [];
  2088.     
  2089.   
  2090.     
  2091.     let promisesForEveryMutation = !scriptEnable ? [] : [
  2092.         (async () => {
  2093.             mtf_fix_details();
  2094.             mtf_ChatExist();
  2095.         })()
  2096.     ];
  2097.  
  2098.     return [...promisesForAddition, ...promisesForEveryMutation]
  2099.  
  2100.  
  2101.   }
  2102.  
  2103.   function setOnlyOneEPanel(ePanel){
  2104.  
  2105.     layoutStatusMutex.lockWith(unlock => {
  2106.  
  2107.       let cPanels = engagement_panels_();
  2108.       for (const entry of cPanels.list) {
  2109.         if (entry.ePanel != ePanel && entry.visible) ytBtnCloseEngagementPanel(entry.ePanel);
  2110.       }
  2111.       setTimeout(unlock, 30)
  2112.  
  2113.     })
  2114.  
  2115.   }
  2116.  
  2117.   const FP = {
  2118.  
  2119.     mtoNav_delayedF: () => {
  2120.  
  2121.       let { addP, removeP, mutationTarget } = Q;
  2122.  
  2123.       Q.addP = 0;
  2124.       Q.removeP = 0;
  2125.       
  2126.       mtc_store=Date.now()+1870
  2127.  
  2128.  
  2129.       let regularChecks = regularCheck(addP, removeP, mutationTarget);
  2130.  
  2131.       Promise.all(regularChecks).then(() => {
  2132.         regularChecks = null;
  2133.         
  2134.         mtc_store= Date.now() + 3870 // pending Comments start to load
  2135.         
  2136.         Q.mutationTarget = null;
  2137.  
  2138.         Q.mtoNav_requestNo--;
  2139.         //console.log('motnav reduced to', mtoNav_requestNo)
  2140.         if (Q.mtoNav_requestNo > 0) {
  2141.           Q.mtoNav_requestNo = 1;
  2142.           setTimeout(FP.mtoNav_delayedF, mtoInterval);
  2143.         }
  2144.       })
  2145.  
  2146.  
  2147.     },
  2148.  
  2149.     mtoNavF: ( /** @type {MutationRecord[]} */ mutations,  /** @type {MutationObserver} */   observer) => {
  2150.       //subtree DOM mutation checker - {ytd-watch-flexy} \single \subtree
  2151.  
  2152.       newVideoPageCheck()
  2153.  
  2154.       if (!scriptEnable) return;
  2155.       if (deferredVarYTDHidden) return;
  2156.  
  2157.       let ch = false;
  2158.  
  2159.       let reg = [];
  2160.       let dTarget = null;
  2161.  
  2162.       let wAddP = 0,
  2163.         wRemoveP = 0;
  2164.  
  2165.       let _last_mto_target = null;
  2166.       let _last_mto_target_valid = null;
  2167.  
  2168.       for (const mutation of mutations) {
  2169.         if (!mutation || !mutation.target || !mutation.target.parentNode) continue;
  2170.  
  2171.         let elementalMutation = false;
  2172.         let tAddP = 0,
  2173.           tRemoveP = 0;
  2174.  
  2175.         for (const addedNode of mutation.addedNodes) { //theoretically faster: only reading of states
  2176.           if (addedNode.nodeType === 1) {
  2177.             tAddP++;
  2178.             elementalMutation = true;
  2179.           }
  2180.         }
  2181.  
  2182.         for (const removedNode of mutation.removedNodes) { //theoretically faster: only reading of states
  2183.           if (removedNode.nodeType === 1) {
  2184.             tRemoveP++;
  2185.             elementalMutation = true;
  2186.           }
  2187.         }
  2188.  
  2189.         if (elementalMutation) { //skip all addition and removal operations without elemental changes (e.g. textNode modification)
  2190.  
  2191.           if (_last_mto_target === mutation.target) {
  2192.             // due to addition and removal operations to the same DOM
  2193.             if (_last_mto_target_valid) {
  2194.               // AddP & RemoveP is still valid
  2195.               wAddP += tAddP;
  2196.               wRemoveP += tRemoveP;
  2197.             }
  2198.             continue;
  2199.           }
  2200.           _last_mto_target = mutation.target;
  2201.  
  2202.           if (isMtoTargetSkip(mutation)) {
  2203.             _last_mto_target_valid = false;
  2204.             continue; //theoretically slower: creation of string variables
  2205.           } else {
  2206.             _last_mto_target_valid = true;
  2207.             wAddP += tAddP;
  2208.             wRemoveP += tRemoveP;
  2209.           }
  2210.  
  2211.  
  2212.  
  2213.           ch = true;
  2214.  
  2215.           reg.push(mutation);
  2216.  
  2217.           if (dTarget === null) dTarget = mutation.target; //first
  2218.           else if (dTarget === true) {} //ytdFlexy
  2219.           else if (dTarget.contains(mutation.target)) {} //first node is the container to all subsequential targets
  2220.           else { dTarget = true; } //the target is not the child of first node
  2221.  
  2222.         }
  2223.  
  2224.       }
  2225.  
  2226.       if (!ch) return; // dTarget must be true OR HTMLElement
  2227.  
  2228.       if (dTarget === true) dTarget = kRef(ytdFlexy); // major mutation occurance
  2229.       else if (dTarget === kRef(comments_section_loaded_elm) && wAddP > wRemoveP) return true; // ignore if comments are loaded (adding comments)
  2230.       else if (isMtoOverallSkip(dTarget)) return; // allow for multiple mutations at the same time - determinated after looping
  2231.  
  2232.  
  2233.  
  2234.       // 4 ~ 16 times per full page loading
  2235.  
  2236.       Q.addP += wAddP;
  2237.       Q.removeP += wRemoveP;
  2238.  
  2239.       if (Q.mutationTarget === null) Q.mutationTarget = dTarget;
  2240.       else if (Q.mutationTarget != dTarget) Q.mutationTarget = kRef(ytdFlexy);
  2241.  
  2242.       //console.log(prettyElm(dTarget), wAddP , wRemoveP, mtoInterval)
  2243.       //console.log(prettyElm(dTarget), reg.map(m=>prettyElm(m.target)))
  2244.       //console.log(7015, performance.now())
  2245.  
  2246.  
  2247.  
  2248.       Q.mtoNav_requestNo++;
  2249.       if (Q.mtoNav_requestNo == 1) setTimeout(FP.mtoNav_delayedF, mtoInterval);
  2250.  
  2251.     },
  2252.  
  2253.  
  2254.     mtoBodyF: ( /** @type {MutationRecord[]} */ mutations,  /** @type {MutationObserver} */   observer) => {
  2255.       //subtree DOM mutation checker - {body} \single \subtree
  2256.  
  2257.       if (!scriptEnable) return;
  2258.       if (deferredVarYTDHidden) return;
  2259.  
  2260.       for (const mutation of mutations) {
  2261.         for (const addedNode of mutation.addedNodes)
  2262.           if (addedNode.nodeType === 1) {
  2263.             if (addedNode.nodeName == "DIV" && addedNode.matches('.autocomplete-suggestion:not([autocomplete-disable-updatesc])') ) {
  2264.               mtf_fixAutoCompletePosition(addedNode)
  2265.             }else if(addedNode.nodeName == "DIV" && (addedNode.id==='lyricscontainer' || addedNode.id==='showlyricsbutton')){
  2266.  
  2267.               goYoutubeGeniusLyrics();
  2268.  
  2269.             }
  2270.           }
  2271.       }
  2272.  
  2273.     },
  2274.  
  2275.     mtf_attrPlaylist: (attrName, newValue) => {
  2276.       //attr mutation checker - {ytd-playlist-panel-renderer#playlist} \single
  2277.       //::attr ~ hidden    
  2278.       //console.log(1210)
  2279.  
  2280.       if (!scriptEnable) return;
  2281.       if (deferredVarYTDHidden) return;
  2282.       let cssElm = kRef(ytdFlexy);
  2283.       if (!cssElm) return;
  2284.  
  2285.       let playlist = document.querySelector('ytd-playlist-panel-renderer#playlist')
  2286.       const tabBtn = document.querySelector('[userscript-tab-content="#tab-list"]');
  2287.       let isPlaylistHidden = playlist.hasAttribute('hidden')
  2288.       //console.log(1212.2, isPlaylistHidden, playlist.getAttribute('hidden'))
  2289.       if (tabBtn) {
  2290.         //console.log('attr playlist changed')
  2291.         if (tabBtn.classList.contains('tab-btn-hidden') && !isPlaylistHidden) {
  2292.           //console.log('attr playlist changed - no hide')
  2293.           tabBtn.classList.remove("tab-btn-hidden");
  2294.         } else if (!tabBtn.classList.contains('tab-btn-hidden') && isPlaylistHidden) {
  2295.           //console.log('attr playlist changed - add hide')
  2296.           hideTabBtn(tabBtn);
  2297.         }
  2298.       }
  2299.       /* visible layout for triggering hidden removal */
  2300.       akAttr(cssElm, 'tabview-youtube-playlist', isPlaylistHidden);
  2301.     },
  2302.     mtf_attrComments: (attrName, newValue) => {
  2303.       //attr mutation checker - {ytd-comments#comments} \single
  2304.       //::attr ~ hidden
  2305.  
  2306.       let ytdFlexyElm = kRef(ytdFlexy);
  2307.       if (!scriptEnable || !ytdFlexyElm) return;
  2308.       if (deferredVarYTDHidden) return;
  2309.  
  2310.       let comments = document.querySelector('ytd-comments#comments')
  2311.       const tabBtn = document.querySelector('[userscript-tab-content="#tab-comments"]');
  2312.       if (!comments || !tabBtn) return;
  2313.       let isCommentHidden = comments.hasAttribute('hidden')
  2314.       //console.log('attr comments changed')
  2315.  
  2316.       mtoInterval = mtoInterval1;
  2317.       
  2318.       mtc_store=Date.now()+2870
  2319.  
  2320.       if( mtf_forceCheckLiveVideo_disable === 2 ){
  2321.  
  2322.       }else if (!isCommentHidden) {
  2323.         
  2324.  
  2325.         akAttr(ytdFlexyElm, 'tabview-youtube-comments', false, 'K');
  2326.  
  2327.  
  2328.  
  2329.         //console.log('attr comments changed - no hide')
  2330.         tabBtn.classList.remove("tab-btn-hidden") //if contains
  2331.  
  2332.             
  2333.         
  2334.         //console.log(703)
  2335.  
  2336.         mtc_cid&&timeline.clearInterval(mtc_cid);
  2337.  
  2338.       } else if (isCommentHidden) {
  2339.  
  2340.         akAttr(ytdFlexyElm, 'tabview-youtube-comments', true, 'K'); 
  2341.         
  2342.         timeline.setTimeout(function(){
  2343.           if(!deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0 && comments.hasAttribute('hidden')){
  2344.             //console.log(3434)
  2345.             scheduledCommentRefresh=false;  //logic tbc
  2346.             resetCommentSection();
  2347.             //console.log(8022)
  2348.           }
  2349.         },142)
  2350.  
  2351.  
  2352.         if(!mtc_cid) mtc_cid=timeline.setInterval(()=>{
  2353.           if(mtc_store>Date.now()) return;
  2354.             timeline.clearInterval(mtc_cid)
  2355.             mtc_cid=0;
  2356.             if(mtf_forceCheckLiveVideo_disable===2)return;
  2357.             if(isNullComments()) _disableComments();
  2358.  
  2359.         },80)
  2360.  
  2361.       }
  2362.  
  2363.  
  2364.     },
  2365.  
  2366.  
  2367.     mtf_attrChatroom: (attrName, newValue) => {
  2368.       //attr mutation checker - {ytd-live-chat-frame#chat} \single
  2369.       //::attr ~ collapsed
  2370.  
  2371.       let ytdFlexyElm = kRef(ytdFlexy);
  2372.       if (!scriptEnable || !ytdFlexyElm) return;
  2373.       if (deferredVarYTDHidden) return;
  2374.  
  2375.       layoutStatusMutex.lockWith(unlock => {
  2376.  
  2377.         const chatBlock = document.querySelector('ytd-live-chat-frame#chat')
  2378.         const cssElm = kRef(ytdFlexy)
  2379.  
  2380.         if (!chatBlock || !cssElm) {
  2381.           unlock();
  2382.           return;
  2383.         }
  2384.  
  2385.         if (deferredVarYTDHidden) {
  2386.           unlock();
  2387.           return;
  2388.         }
  2389.  
  2390.         if (!cssElm.hasAttribute('userscript-chatblock')) wAttr(cssElm, 'userscript-chatblock', true);
  2391.         let isCollapsed = !!chatBlock.hasAttribute('collapsed');
  2392.         wAttr(cssElm, 'userscript-chat-collapsed', isCollapsed);
  2393.  
  2394.         if (cssElm.hasAttribute('userscript-chatblock') && !isCollapsed) lastShowTab = '#chatroom';
  2395.  
  2396.         if (!isCollapsed && document.querySelector('#right-tabs .tab-btn.active') && isWideScreenWithTwoColumns() && !isTheater()) {
  2397.           switchTabActivity(null);
  2398.           timeline.setTimeout(unlock, 40);
  2399.         } else {
  2400.           unlock();
  2401.         }
  2402.  
  2403.         if (!isCollapsed) {
  2404.           runAfterExpandChat();
  2405.         } else {
  2406.           chatBlock.removeAttribute('yt-userscript-iframe-loaded');
  2407.         }
  2408.  
  2409.       })
  2410.  
  2411.  
  2412.  
  2413.  
  2414.     },
  2415.  
  2416.     mtf_attrEngagementPanel: ( /** @type {MutationRecord[]} */ mutations,  /** @type {MutationObserver} */   observer) => {
  2417.       //attr mutation checker - {ytd-engagement-panel-section-list-renderer} \mutiple
  2418.       //::attr ~ visibility
  2419.  
  2420.       let ytdFlexyElm = kRef(ytdFlexy);
  2421.       if (!scriptEnable || !ytdFlexyElm) return;
  2422.  
  2423.       //multiple instance
  2424.       if (mutations) {
  2425.         for (const mutation of mutations) {
  2426.           let ePanel = mutation.target;
  2427.           if (ePanel.getAttribute('visibility') == 'ENGAGEMENT_PANEL_VISIBILITY_EXPANDED') {
  2428.             setOnlyOneEPanel(ePanel);
  2429.             break;
  2430.           }
  2431.         }
  2432.       }
  2433.       if (deferredVarYTDHidden) return;
  2434.  
  2435.       layoutStatusMutex.lockWith(unlock => {
  2436.  
  2437.         const ePanel = document.querySelector('ytd-watch-flexy ytd-engagement-panel-section-list-renderer')
  2438.         const cssElm = kRef(ytdFlexy)
  2439.  
  2440.         if (!ePanel || !cssElm) {
  2441.           unlock();
  2442.           return;
  2443.         }
  2444.         let previousValue = +cssElm.getAttribute('userscript-engagement-panel') || 0;
  2445.  
  2446.         let { shownRes, value, count } = engagement_panels_();
  2447.         let nextValue = value;
  2448.         let nextCount = count;
  2449.  
  2450.  
  2451.         if (nextCount == 0 && cssElm.hasAttribute('userscript-engagement-panel')) {
  2452.           storeLastPanel=null;
  2453.           wAttr(cssElm, 'userscript-engagement-panel', false);
  2454.           unlock();
  2455.         } else {
  2456.  
  2457.           if ((nextCount > 1) || (cssElm.hasAttribute('userscript-engagement-panel') && previousValue === nextValue)) {
  2458.             unlock();
  2459.             return;
  2460.           }
  2461.  
  2462.           cssElm.setAttribute('userscript-engagement-panel', nextValue);
  2463.  
  2464.           let b = false;
  2465.           if (previousValue != nextValue && nextValue > 0) {
  2466.             lastShowTab = `#engagement-panel-${nextValue}`;
  2467.             b = true;
  2468.             storeLastPanel = mWeakRef( shownRes[0])
  2469.             //console.log(9999, shownRes[0])
  2470.           }
  2471.  
  2472.           if (b && document.querySelector('#right-tabs .tab-btn.active') && isWideScreenWithTwoColumns() && !isTheater()) {
  2473.             switchTabActivity(null);
  2474.             timeline.setTimeout(unlock, 40);
  2475.           } else {
  2476.             unlock();
  2477.           }
  2478.         }
  2479.  
  2480.       })
  2481.  
  2482.  
  2483.  
  2484.  
  2485.     },
  2486.  
  2487.     mtf_initalAttr_playlist: () => {
  2488.       
  2489.     },
  2490.  
  2491.     mtf_initalAttr_comments: () => {
  2492.       
  2493.     },
  2494.  
  2495.     mtf_initalAttr_chatroom: () => {
  2496.       // every per [new] {ytd-live-chat-frame#chat} detection - reset after mini-playview
  2497.       
  2498.       let ytdFlexyElm = kRef(ytdFlexy);
  2499.       if (!scriptEnable || !ytdFlexyElm) return true;
  2500.  
  2501.       const rootElement = Q.mutationTarget || ytdFlexyElm;
  2502.  
  2503.  
  2504.       if (!mgChatFrame.inPage()) {
  2505.  
  2506.         mtoVisibility_Chatroom.clear(true);
  2507.  
  2508.         let chatroom = rootElement.querySelector(`ytd-live-chat-frame#chat:not([${sa_chatroom}]`)
  2509.         if (chatroom) {
  2510.           mgChatFrame.setVar(chatroom);
  2511.  
  2512.           if(mtoVisibility_Chatroom.bindElement(chatroom)){
  2513.             mtoVisibility_Chatroom.observer.check(9)
  2514.           }
  2515.  
  2516.           chatroom = null
  2517.         }
  2518.       }
  2519.       return true;
  2520.  
  2521.     },
  2522.  
  2523.     mtf_initalAttr_engagement_panel: () => {
  2524.       // every per $$non-checked-section-list$$ {ytd-watch-flexy ytd-engagement-panel-section-list-renderer:not([o3r-XXXXX])} detection
  2525.       
  2526.       let ytdFlexyElm = kRef(ytdFlexy);
  2527.       if (!scriptEnable || !ytdFlexyElm) return true;
  2528.  
  2529.       const rootElement = Q.mutationTarget || ytdFlexyElm;
  2530.  
  2531.       let toCheck = false;
  2532.       for (const engagement_panel of rootElement.querySelectorAll(
  2533.         `ytd-watch-flexy ytd-engagement-panel-section-list-renderer:not([o3r-${sa_epanel}])`
  2534.         )) {
  2535.  
  2536.  
  2537.  
  2538.         let bindRes = mtoVisibility_EngagementPanel.bindElement(engagement_panel, {
  2539.           attributes: true,
  2540.           attributeFilter: ['visibility'],
  2541.           attributeOldValue: true
  2542.         })
  2543.         
  2544.  
  2545.         if(bindRes) toCheck = true;
  2546.       }
  2547.  
  2548.       if (toCheck) FP.mtf_attrEngagementPanel()
  2549.  
  2550.       return true;
  2551.     },
  2552.  
  2553.  
  2554.  
  2555.     //live-chat / chat-replay
  2556.  
  2557.     fireOnce_forceCheckLiveVideo_tf: () => {
  2558.       // once per $$player-playback-timestamp$$ {#ytd-player .ytp-time-display} &&  $$chat-frame$$ {ytd-live-chat-frame#chat} detection
  2559.  
  2560.       let ytdFlexyElm = kRef(ytdFlexy);
  2561.       if (!scriptEnable || !ytdFlexyElm) return;
  2562.  
  2563.       let elm = document.querySelector('#ytd-player .ytp-time-display');
  2564.       if (elm && elm.classList.contains('ytp-live')) {
  2565.         //console.log(7006)
  2566.         ytdFlexyElm.setAttribute('userscript-chatblock', 'chat-live')
  2567.         //console.log(2441)
  2568.         mtf_forceCheckLiveVideo_disable = 2;
  2569.         
  2570.         _disableComments();
  2571.         
  2572.        //console.log(701)
  2573.         //disableComments_LiveChat();
  2574.       }
  2575.     },
  2576.  
  2577.     
  2578.  
  2579.     //comments
  2580. /*
  2581.     mtf_advancedComments: () => {
  2582.       // once per {ytd-comments#comments #continuations} detection
  2583.  
  2584.       //let ytdFlexyElm = kRef(ytdFlexy);
  2585.       //if (!scriptEnable || !ytdFlexyElm) return true;
  2586.  
  2587.       //const rootElement = Q.mutationTarget || ytdFlexyElm;
  2588.       //const continuations = document.querySelector("ytd-comments#comments #continuations");
  2589.       //if (!continuations) return true;
  2590.       //requestingComments = document.querySelector('ytd-comments#comments');
  2591.       //scrollForComments();
  2592.       return false;
  2593.     }
  2594.     */
  2595.  
  2596.  
  2597.   }
  2598.  
  2599.  
  2600.  
  2601.  
  2602.  
  2603.   /** @type {WeakRef | null} */ 
  2604.   let displayedPlaylist = null;
  2605.   
  2606.   /** @type {WeakRef | null} */ 
  2607.   let scrollingVideosList = null;
  2608.  
  2609.   let scriptEnable = false;
  2610.   let scriptEC = 0;
  2611.   let lastShowTab = null;
  2612.  
  2613.   let _cachedLastVideo = null;
  2614.   let videoListBeforeSearch = null;
  2615.   let no_fix_contents_until = 0;
  2616.   let no_fix_playlist_until = 0;
  2617.   let statusCollasped = 0;
  2618.  
  2619.   /** @type {WeakRef | null} */ 
  2620.   let ytdFlexy = null;
  2621.  
  2622.   function pluginUnhook() {
  2623.     _pluginUnhook();
  2624.     resetCommentSection();
  2625.   }
  2626.  
  2627.   function _pluginUnhook() {
  2628.  
  2629.     sect_lastUpdate = 0;
  2630.     sect_holder = null;
  2631.     sect_hTime = 0;
  2632.  
  2633.     //console.log(8001)
  2634.  
  2635.     videoListBeforeSearch = null;
  2636.     statusCollasped = 0;
  2637.     _cachedLastVideo = null;
  2638.     lastShowTab = null;
  2639.     displayedPlaylist = null;
  2640.     scrollingVideosList = null;
  2641.     scriptEnable = false;
  2642.     scriptEC++;
  2643.     if (scriptEC > 788888888) scriptEC = 188888888;
  2644.     ytdFlexy = null;
  2645.     wls.layoutStatus = null;
  2646.  
  2647.     //console.log('unc01')
  2648.  
  2649.     mtoVisibility_EngagementPanel.clear(true)
  2650.     mtoVisibility_Playlist.clear(true)
  2651.     mtoVisibility_Comments.clear(true)
  2652.  
  2653.     mgChatFrame.kVar = null;
  2654.     mtoVisibility_Chatroom.clear(true)
  2655.     mtoFlexyAttr.clear(true)
  2656.  
  2657.     
  2658.  
  2659.     for (const elem of document.querySelectorAll(
  2660.       ['ytd-expander[tabview-info-expander]'].join(', ')
  2661.       )) {
  2662.         elem.removeAttribute('tabview-info-expander');
  2663.     }
  2664.  
  2665.     
  2666.     mtoMutation_body.clear(true)
  2667.     mtoMutation_watchFlexy.clear(true)
  2668.     //FOnce.mtf_checkFlexy = null;
  2669.     //FOnce.mtf_initalAttr_comments = null;
  2670.     //FOnce.mtf_initalAttr_playlist = null;
  2671.     //FOnce.mtf_initalAttr_chatroom = null;
  2672.     //FOnce.mtf_initalAttr_engagement_panel = null;
  2673.     //FOnce.mtf_advancedComments = null;
  2674.     //FOnce.mtf_checkDescriptionLoaded = null;
  2675.     //FOnce.mtf_forceCheckLiveVideo = null;
  2676.     Q.mtf_chatBlockQ = null;
  2677.  
  2678.  
  2679.     mtoInterval = mtoInterval1;
  2680.  
  2681.   }
  2682.  
  2683.   let comments_section_loaded_elm = null;
  2684.  
  2685.  
  2686.  
  2687.   function getTabsHTML() {
  2688.  
  2689.     const sTabBtnVideos = `${svgElm(16,16,298,298,svgVideos)}<span>Videos</span>`
  2690.     const sTabBtnInfo = `${svgElm(16,16,23.625,23.625,svgInfo)}<span>Info</span>`
  2691.     const sTabBtnPlayList = `${svgElm(16,16,426.667,426.667,svgPlayList)}<span>Playlist</span>`
  2692.  
  2693.     let str1 = `
  2694.         <paper-ripple class="style-scope yt-icon-button">
  2695.             <div id="background" class="style-scope paper-ripple" style="opacity:0;"></div>
  2696.             <div id="waves" class="style-scope paper-ripple"></div>
  2697.         </paper-ripple>
  2698.         `;
  2699.  
  2700.     const str_tabs = [
  2701.             `<a id="tab-btn1" data-name="info" userscript-tab-content="#tab-info" class="tab-btn">${sTabBtnInfo}${str1}</a>`,
  2702.             `<a id="tab-btn3" userscript-tab-content="#tab-comments" data-name="comments" class="tab-btn">${svgElm(16,16,60,60,svgComments)}<span id="tab3-txt-loader"></span>${str1}</a>`,
  2703.             `<a id="tab-btn4" userscript-tab-content="#tab-videos" data-name="videos" class="tab-btn">${sTabBtnVideos}${str1}</a>`,
  2704.             `<a id="tab-btn5" userscript-tab-content="#tab-list" class="tab-btn">${sTabBtnPlayList}${str1}</a>`
  2705.         ].join('')
  2706.  
  2707.     let addHTML = `
  2708.         <div id="right-tabs">
  2709.             <header>
  2710.                 <div id="material-tabs">
  2711.                     ${str_tabs}
  2712.                 </div>
  2713.             </header>
  2714.             <div class="tab-content">
  2715.                 <div id="tab-info" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2716.                 <div id="tab-comments" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2717.                 <div id="tab-videos" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2718.                 <div id="tab-list" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2719.             </div>
  2720.         </div>
  2721.         `;
  2722.  
  2723.     return addHTML
  2724.  
  2725.   }
  2726.  
  2727.  
  2728.   function onVideoChange() {
  2729.     // for popstate & next video
  2730.  
  2731.     newVideoPageCheck();
  2732.  
  2733.     scheduledCommentRefresh=true;
  2734.     let comments = document.querySelector('ytd-comments#comments')
  2735.     
  2736.     if(!deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0 && comments.hasAttribute('hidden')){
  2737.  
  2738.       scheduledCommentRefresh=false; 
  2739.       
  2740.       // comment tab btn - hide by timer in attribute change
  2741.       resetCommentSection();
  2742.     }
  2743.  
  2744.     mtf_forceCheckLiveVideo_disable = 0
  2745.     mtc_store= Date.now()+3870
  2746.  
  2747.     if (deferredVarYTDHidden) {  // reset info when hidden
  2748.       
  2749.       resetCommentSection();
  2750.     }else{
  2751.       checkVisibleEngagementPanel();
  2752.       atChange(); // in case no mutation occurance
  2753.     }
  2754.  
  2755.  
  2756.  
  2757.   }
  2758.  
  2759.   function onNavigationEnd(evt) {
  2760.     forceConfig();
  2761.     /*
  2762.     console.log(window.ytcfg)
  2763.     try{
  2764.     window.ytcfg.set({
  2765.       "EXPERIMENT_FLAGS": {"kevlar_watch_metadata_refresh":false}})
  2766.     }catch(e){}
  2767.     */
  2768.  
  2769.     newVideoPageCheck(); // required for init
  2770.  
  2771.     let mRet =
  2772.       (/^https?\:\/\/(\w+\.)*youtube\.com\/watch\?(\w+\=[^\/\?\&]+\&|\w+\=?\&)*v=[\w\-\_]+/.test(window.location.href) ? 1 : 0) +
  2773.       (document.querySelector('ytd-watch-flexy[tabview-selection]') ? 2 : 0);
  2774.  
  2775.     if (mRet === 1) {
  2776.  
  2777.       document.addEventListener('loadedmetadata', function(evt) {
  2778.         if (evt.target.matches('video[tabview-mainvideo]')) {
  2779.           setTimeout(onVideoChange, 30)
  2780.         }
  2781.       }, true)
  2782.  
  2783.       pluginUnhook(); // in case not triggered by popstate - say mini playing
  2784.  
  2785.       let timeout = 4; // max. 4 animation frames
  2786.  
  2787.       let tf = () => {
  2788.  
  2789.         if (--timeout > 0 && !document.querySelector('#player video')) return requestAnimationFrame(tf);
  2790.  
  2791.         if (!document.querySelector('script#userscript-tabview-injection-1')) {
  2792.  
  2793.           if (isMyScriptInChromeRuntime()){
  2794.  
  2795.             addScriptByURL(window.chrome.runtime.getURL('js/injection_script_1.js')).id = 'userscript-tabview-injection-1';
  2796.           }
  2797.           else{
  2798.  
  2799.             let injection_script = GM_getResourceText("injectionJS1")
  2800.             addScript(`${injection_script}`).id = 'userscript-tabview-injection-1';
  2801.           }
  2802.         }
  2803.  
  2804.         let ytdFlexyElm = document.querySelector('ytd-watch-flexy')
  2805.  
  2806.         if(!ytdFlexyElm) return;
  2807.  
  2808.  
  2809.         scriptEnable = true;
  2810.         scriptEC++;
  2811.  
  2812.         no_fix_contents_until = 0;
  2813.         no_fix_playlist_until = 0;
  2814.  
  2815.         ytdFlexy = mWeakRef(ytdFlexyElm)
  2816.  
  2817.         let timeoutR_findRelated = new Timeout();
  2818.         timeoutR_findRelated.set(function() {
  2819.           let ytdFlexyElm = kRef(ytdFlexy);
  2820.           if(!ytdFlexyElm) return true;
  2821.           let related = ytdFlexyElm.querySelector("#related");
  2822.           if (!related) return true;
  2823.           foundRelated(related);
  2824.         }, 100, 10)
  2825.  
  2826.         function foundRelated(related) {
  2827.           let promise = Promise.resolve();
  2828.           if (!document.querySelector("#right-tabs")) {
  2829.             promise = promise.then(() => {
  2830.               $(getTabsHTML()).insertBefore(related).attr('data-dom-created-by-tabview-youtube', scriptVersionForExternal);
  2831.             })
  2832.           }
  2833.           promise.then(runAfterTabAppended)
  2834.         }
  2835.  
  2836.         /*
  2837.         setTimeout(() => {
  2838.           for (const s of document.querySelectorAll('#right-tabs [userscript-scrollbar-render]')) {
  2839.             Promise.resolve(s).then(s => {
  2840.               if (s && s.scrollTop > 0) s.scrollTop = 0;
  2841.               let child = s.firstElementChild;
  2842.               if (child && child.scrollTop > 0) child.scrollTop = 0;
  2843.             });
  2844.           }
  2845.         }, 90)
  2846.         */
  2847.  
  2848.  
  2849.       }
  2850.  
  2851.       tf();
  2852.  
  2853.     } else if (mRet === 3) {
  2854.  
  2855.       if(!scriptEnable) return;
  2856.  
  2857.       let elmComments = document.querySelector('ytd-comments#comments')
  2858.  
  2859.       if (elmComments) {
  2860.         nativeFunc(elmComments, "loadComments")
  2861.       }
  2862.  
  2863.     } else if (mRet === 0) {
  2864.       
  2865.  
  2866.       pluginUnhook(); // in case not triggered by popstate - say mini playing
  2867.  
  2868.     }
  2869.  
  2870.     if(mRet & 1){
  2871.       
  2872.       setTimeout(()=>{
  2873.         
  2874.         Q.mutationTarget=null;
  2875.         atChange(); // in case no mutation occurance
  2876.         FP.mtf_attrComments()
  2877.       },160);
  2878.         
  2879.     }
  2880.  
  2881.   }
  2882.  
  2883.  
  2884.   function setToActiveTab(defaultTab) {
  2885.     if (isTheater() && isWideScreenWithTwoColumns()) return;
  2886.     const jElm = document.querySelector(`a[userscript-tab-content="${switchTabActivity_lastTab}"]:not(.tab-btn-hidden)`) ||
  2887.       document.querySelector(`a[userscript-tab-content="${(defaultTab||settings.defaultTab)}"]:not(.tab-btn-hidden)`) ||
  2888.       document.querySelector("a[userscript-tab-content]:not(.tab-btn-hidden)") ||
  2889.       null;
  2890.     switchTabActivity(jElm);
  2891.     return !!jElm;
  2892.   }
  2893.  
  2894.   function getWrapper(wrapperId) {
  2895.     let $wrapper = $(`#${wrapperId}`);
  2896.     if (!$wrapper[0]) $wrapper = $(`<div id="${wrapperId}"></div>`)
  2897.     return $wrapper.first();
  2898.   }
  2899.  
  2900.   function runAfterTabAppended() {
  2901.  
  2902.     document.documentElement.setAttribute('plugin-tabview-youtube', '')
  2903.  
  2904.     const ytdFlexyElm = kRef(ytdFlexy)
  2905.     if(!ytdFlexyElm) return;
  2906.     if (!ytdFlexyElm.hasAttribute('tabview-selection')) ytdFlexyElm.setAttribute('tabview-selection', '')
  2907.  
  2908.     
  2909.  
  2910.     
  2911.     //console.log('unc02')
  2912.  
  2913.     // append the next videos 
  2914.     // it exists as "related" is already here
  2915.     fixTabs();
  2916.  
  2917.     // just switch to the default tab
  2918.     setToActiveTab();
  2919.  
  2920.  
  2921.     prepareTabBtn();
  2922.  
  2923.  
  2924.     // append the detailed meta contents to the tab-info
  2925.     // ** FOnce.mtf_checkDescriptionLoaded = FP.mtf_checkDescriptionLoaded;
  2926.     // ** if (Q.mutationTarget === null) $callOnceAsync('mtf_checkDescriptionLoaded');
  2927.  
  2928.     // force window scroll when #continuations is first detected and #comments still [hidden]
  2929.     //FOnce.mtf_advancedComments = FP.mtf_advancedComments;
  2930.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_advancedComments');
  2931.  
  2932.     // use video player's element to detect the live-chat situation (no commenting section)
  2933.     // 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
  2934.     //FOnce.mtf_forceCheckLiveVideo = FP.mtf_forceCheckLiveVideo;
  2935.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_forceCheckLiveVideo');
  2936.     //mtf_forceCheckLiveVideo();
  2937.  
  2938.  
  2939.     // Attr Mutation Observer - #playlist - hidden
  2940.     //clearMutationObserver(mtoVs, 'mtoVisibility_Playlist')
  2941.     // Attr Mutation Observer callback - #playlist - hidden
  2942.  
  2943.     // pending for #playlist and set Attribute Observer
  2944.     // ** FOnce.mtf_initalAttr_playlist = FP.mtf_initalAttr_playlist
  2945.     // ** if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_playlist');
  2946.  
  2947.     // Attr Mutation Observer - ytd-comments#comments - hidden
  2948.     //clearMutationObserver(mtoVs, 'mtoVisibility_Comments')
  2949.     // Attr Mutation Observer callback - ytd-comments#comments - hidden
  2950.  
  2951.     // pending for #comments and set Attribute Observer
  2952.     // ** FOnce.mtf_initalAttr_comments = FP.mtf_initalAttr_comments;
  2953.     // ** if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_comments');
  2954.  
  2955.  
  2956.     //clearMutationObserver(mtoVs, 'mtoVisibility_Chatroom');
  2957.     //FOnce.mtf_initalAttr_chatroom = FP.mtf_initalAttr_chatroom
  2958.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_chatroom');
  2959.  
  2960.     // clearMutationObserver(mtoVs, 'mtoVisibility_EngagementPanel');
  2961.     // for (const engagement_panel of document.querySelectorAll('ytd-watch-flexy ytd-engagement-panel-section-list-renderer:not([tabview-attr-checked])')) {
  2962.     //   engagement_panel.removeAttribute('tabview-attr-checked');
  2963.     // }
  2964.     //FOnce.mtf_initalAttr_engagement_panel = FP.mtf_initalAttr_engagement_panel
  2965.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_engagement_panel');
  2966.  
  2967.  
  2968.     mtoFlexyAttr.clear(true)
  2969.     mtf_checkFlexy()
  2970.  
  2971.  
  2972.     document.querySelector("#right-tabs .tab-content").addEventListener('scroll', makeBodyScrollByEvt, true);
  2973.  
  2974.  
  2975.     Q.addP = 0;
  2976.     Q.removeP = 0;
  2977.     Q.mutationTarget = null;
  2978.  
  2979.     Q.mtoNav_requestNo = 0;
  2980.  
  2981.  
  2982.     mtoMutation_watchFlexy.bindElement(ytdFlexyElm, {
  2983.       childList: true,
  2984.       subtree: true,
  2985.       attributes: false
  2986.     })
  2987.  
  2988.     // for automcomplete plugin or other userscript plugins
  2989.     // document.body for Firefox >= 60
  2990.     mtoMutation_body.bindElement(document.querySelector('body'), {
  2991.       childList: true,
  2992.       subtree: false,
  2993.       attributes: false
  2994.     })
  2995.  
  2996.  
  2997.     regularCheck(1, 0, null);
  2998.  
  2999.     
  3000.  
  3001.  
  3002.  
  3003.   }
  3004.  
  3005.  
  3006.   function fetchCommentsFinished() {
  3007.     let ytdFlexyElm = kRef(ytdFlexy);
  3008.     if (!scriptEnable || !ytdFlexyElm) return;
  3009.     if(mtf_forceCheckLiveVideo_disable===2) return;
  3010.     akAttr(ytdFlexyElm, 'tabview-youtube-comments', false, 'LS')
  3011.   }
  3012.  
  3013.   function setCommentSection( /** @type {number} */ value) {
  3014.  
  3015.     Q.comments_section_loaded = value;
  3016.  
  3017.     if (value === 0) {
  3018.       sect_lastUpdate = 0;
  3019.       comments_section_loaded_elm = null;
  3020.     }
  3021.  
  3022.   }
  3023.  
  3024.   function resetCommentSection(){
  3025.     
  3026.  
  3027.     let tab_btn = document.querySelector('.tab-btn[userscript-tab-content="#tab-comments"]')
  3028.  
  3029.  
  3030.     if(tab_btn){
  3031.  
  3032.       let span = tab_btn.querySelector('span#tab3-txt-loader');
  3033.  
  3034.       tab_btn.removeAttribute('loaded-comment')
  3035.       tab_btn.classList.remove('tab-btn-hidden')
  3036.         
  3037.       if(span){
  3038.         span.textContent='';
  3039.       }
  3040.     }
  3041.  
  3042.  
  3043.     setCommentSection(0);
  3044.  
  3045.  
  3046.   }
  3047.  
  3048.   function _disableComments() {
  3049.     
  3050.     //requestingComments = null;
  3051.     mtc_cid && timeline.clearInterval(mtc_cid)
  3052.     mtc_cid=0;
  3053.  
  3054.     if (!scriptEnable) return;
  3055.     let cssElm = kRef(ytdFlexy);
  3056.     if (!cssElm) return;
  3057.  
  3058.     mtoInterval = mtoInterval2;
  3059.  
  3060.     if(Q.comments_section_loaded>0) return; //already displayed / disabled
  3061.  
  3062.     scheduledCommentRefresh=false;
  3063.     setCommentSection(2);
  3064.  
  3065.     comments_section_loaded_elm = mWeakRef(document.querySelector('ytd-comments#comments div#contents') || null)
  3066.  
  3067.     let tabBtn = document.querySelector('.tab-btn[userscript-tab-content="#tab-comments"]');
  3068.     if(tabBtn) {
  3069.       tabBtn.removeAttribute('loaded-comment')
  3070.       if (!tabBtn.classList.contains('tab-btn-hidden')) {
  3071.         hideTabBtn(tabBtn)
  3072.       }
  3073.     }
  3074.  
  3075.     akAttr(cssElm, 'tabview-youtube-comments', true, 'D');
  3076.  
  3077.  
  3078.   }
  3079.  
  3080.  
  3081.  
  3082.  
  3083.   let layoutStatusMutex = new Mutex();
  3084.  
  3085.   function forceDisplayChatReplay() {
  3086.     let items = chatFrameElement('yt-live-chat-item-list-renderer #items');
  3087.     if (items && items.childElementCount !== 0) return;
  3088.  
  3089.     let ytd_player = document.querySelector('ytd-player#ytd-player');
  3090.     if (!ytd_player) return;
  3091.     let videoElm = ytd_player.querySelector('video');
  3092.     if (!videoElm) return;
  3093.  
  3094.     let video = videoElm;
  3095.     if (videoElm && video.currentTime > 0 && !video.ended && video.readyState > video.HAVE_CURRENT_DATA) {
  3096.       let chat = document.querySelector('ytd-live-chat-frame#chat');
  3097.       if (chat) {
  3098.         nativeFunc(chat, "postToContentWindow", [{ "yt-player-video-progress": videoElm.currentTime }])
  3099.       }
  3100.     }
  3101.  
  3102.   }
  3103.  
  3104.  
  3105.  
  3106.   function runAfterExpandChat() {
  3107.  
  3108.  
  3109.     if(runAfterExpandChat.cid_chatFrameCheck1) timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck1);
  3110.     if(runAfterExpandChat.cid_chatFrameCheck2) timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck2);
  3111.     runAfterExpandChat.cid_chatFrameCheck1=0;
  3112.     runAfterExpandChat.cid_chatFrameCheck2=0;
  3113.  
  3114.     new Promise(resolve => {
  3115.  
  3116.       let chatFrame_st = Date.now();
  3117.       runAfterExpandChat.cid_chatFrameCheck1 = 0;
  3118.  
  3119.       let sEF = new ScriptEF();
  3120.       runAfterExpandChat.cid_chatFrameCheck1 = timeline.setInterval(() => {
  3121.         if (!sEF.isValid()) return runAfterExpandChat.cid_chatFrameCheck1 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck1);
  3122.         let cDoc = chatFrameContentDocument();
  3123.         if (cDoc) {
  3124.           runAfterExpandChat.cid_chatFrameCheck1 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck1);
  3125.           resolve();
  3126.         } else if (!scriptEnable || !isChatExpand() || Date.now() - chatFrame_st > 6750) {
  3127.           runAfterExpandChat.cid_chatFrameCheck1 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck1);
  3128.         }
  3129.       }, 60);
  3130.  
  3131.  
  3132.     }).then(() => new Promise(resolve => {
  3133.  
  3134.  
  3135.       let chatFrame_st = Date.now();
  3136.       runAfterExpandChat.cid_chatFrameCheck2 = 0;
  3137.  
  3138.       let sEF = new ScriptEF();
  3139.       runAfterExpandChat.cid_chatFrameCheck2 = timeline.setInterval(() => {
  3140.         if (!sEF.isValid()) return runAfterExpandChat.cid_chatFrameCheck2 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck2);
  3141.         let app = chatFrameElement('yt-live-chat-app');
  3142.         if (app) {
  3143.           runAfterExpandChat.cid_chatFrameCheck2 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck2);
  3144.           resolve(app);
  3145.         } else if (!scriptEnable || !isChatExpand() || Date.now() - chatFrame_st > 6750*3) {
  3146.           runAfterExpandChat.cid_chatFrameCheck2 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck2);
  3147.         }
  3148.       }, 60);
  3149.  
  3150.  
  3151.     })).then(app => {
  3152.  
  3153.  
  3154.       let cDoc = app.ownerDocument;
  3155.  
  3156.       if (!scriptEnable || !isChatExpand()) return;
  3157.       if(cDoc.querySelector('#userscript-tabview-chatroom-css')) return;
  3158.       addStyle(`      
  3159.                 body #input-panel.yt-live-chat-renderer::after {
  3160.                     background: transparent;
  3161.                 }
  3162.                 #items.yt-live-chat-item-list-renderer{
  3163.                     contain: content;
  3164.                 }
  3165.                 yt-live-chat-text-message-renderer{
  3166.                     contain: content;
  3167.                 }
  3168.                 #item-offset.yt-live-chat-item-list-renderer{
  3169.                     contain: content;
  3170.                 }
  3171.                 #item-scroller.yt-live-chat-item-list-renderer{
  3172.                     contain: strict;
  3173.                 }
  3174.                 img[width][height]{
  3175.                     contain: strict;
  3176.                 }
  3177.                 #item-list > yt-live-chat-item-list-renderer, #item-list > yt-live-chat-item-list-renderer > #contents{
  3178.                     contain: strict;
  3179.                 }
  3180.  
  3181.  
  3182.                 #chat.style-scope.yt-live-chat-renderer,
  3183.                 yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer,
  3184.                 #item-scroller,
  3185.                 yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer .style-scope.yt-live-chat-text-message-renderer,
  3186.                 yt-live-chat-ticker-paid-message-item-renderer
  3187.                 {
  3188.                   contain: layout paint style;
  3189.                 }
  3190.                  
  3191.                 yt-img-shadow#author-photo.style-scope{
  3192.                   contain: layout paint style;
  3193.                   content-visibility: auto;
  3194.                   contain-intrinsic-size: 24px 24px;
  3195.                 }
  3196.                  
  3197.                 #item-offset.style-scope.yt-live-chat-item-list-renderer,
  3198.                 #items.style-scope.yt-live-chat-item-list-renderer {
  3199.                   contain: layout paint;
  3200.                 }
  3201.                  
  3202.                 .style-scope.yt-live-chat-text-message-renderer {
  3203.                   cursor: default;
  3204.                 }
  3205.                  
  3206.                 #author-photo.style-scope.yt-live-chat-text-message-renderer,
  3207.                 yt-live-chat-author-chip.style-scope.yt-live-chat-text-message-renderer,
  3208.                 yt-live-chat-author-chip.style-scope.yt-live-chat-text-message-renderer ~ span#message.style-scope.yt-live-chat-text-message-renderer
  3209.                 {
  3210.                   pointer-events: none;
  3211.                 }
  3212.                  
  3213.                 span#message.style-scope.yt-live-chat-text-message-renderer > img.emoji.yt-formatted-string.style-scope.yt-live-chat-text-message-renderer{
  3214.                   contain: layout paint style;
  3215.                   cursor: default;
  3216.                   pointer-events: none;
  3217.                 }
  3218.                  
  3219.                 body yt-live-chat-app{
  3220.                   contain: size layout paint style;
  3221.                   content-visibility: auto;
  3222.                   transform: translate3d(0,0,0);
  3223.                   overflow: hidden;
  3224.                 }
  3225.  
  3226.  
  3227.                 /*
  3228.                 yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer:nth-last-of-type(n+20){
  3229.                   content-visibility: auto;
  3230.                 }
  3231.                 */
  3232.  
  3233.                 /*
  3234.                 @supports (contain-intrinsic-size: auto 1px){
  3235.  
  3236.                   yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer{
  3237.                     content-visibility: auto;
  3238.                     contain-intrinsic-size: auto 24px; 
  3239.                   }
  3240.  
  3241.                 }
  3242.                 */
  3243.                  
  3244.                 .style-scope.yt-live-chat-item-list-renderer{
  3245.                   box-sizing: border-box; 
  3246.                 }
  3247.  
  3248.                 /*
  3249.                 .style-scope.yt-live-chat-item-list-renderer[style*="--tabview-crm-height"]{
  3250.                   content-visibility: auto;
  3251.                   contain-intrinsic-size: 1px var(--tabview-crm-height, 24px); 
  3252.                 }
  3253.  
  3254.                 #item-offset.style-scope.yt-live-chat-item-list-renderer{
  3255.                   height: auto !important;
  3256.                 }
  3257.                 #item-offset.style-scope.yt-live-chat-item-list-renderer > #items:only-child{
  3258.                   position: relative !important;
  3259.                 }*/
  3260.  
  3261.                 #item-offset.style-scope.yt-live-chat-item-list-renderer{
  3262.                   contain: size layout paint style;
  3263.                 }
  3264.                 #item-offset.style-scope.yt-live-chat-item-list-renderer > #items:only-child{
  3265.                   contain: layout paint style;
  3266.                 }
  3267.  
  3268.  
  3269.             `, cDoc.documentElement).id='userscript-tabview-chatroom-css'
  3270.  
  3271.             let frc= 0;
  3272.       let fullReady = ()=>{
  3273.  
  3274.  
  3275.         if(!cDoc.documentElement.hasAttribute('style') && ++frc<900) return timeline.setTimeout(fullReady,10);
  3276.  
  3277.         if (cDoc.querySelector('yt-live-chat-renderer #continuations')) {
  3278.           timeline.setTimeout(() => mtf_ChatExist(), 40);
  3279.           $(document.querySelector('ytd-live-chat-frame#chat')).attr('yt-userscript-iframe-loaded', '')
  3280.         }
  3281.  
  3282.         forceDisplayChatReplay();
  3283.  
  3284.         let iframe = document.querySelector('ytd-live-chat-frame iframe#chatframe');
  3285.  
  3286.  
  3287.         iframe.dispatchEvent(new CustomEvent("tabview-chatroom-ready"))
  3288.  
  3289.  
  3290.  
  3291.       }
  3292.       fullReady();
  3293.  
  3294.  
  3295.  
  3296.     })
  3297.  
  3298.   }
  3299.  
  3300.   function flexyAttr_toggleFlag(mFlag, b, flag) {
  3301.     if (b) mFlag = mFlag | flag;
  3302.     else mFlag = mFlag & ~flag;
  3303.     return mFlag;
  3304.   }
  3305.  
  3306.   function flexAttr_toLayoutStatus(nls, attributeName) {
  3307.  
  3308.     let attrElm, b, v;
  3309.     switch (attributeName) {
  3310.       case 'theater':
  3311.         nls = flexyAttr_toggleFlag(nls, isTheater(), LAYOUT_THEATER);
  3312.         break;
  3313.       case 'userscript-chat-collapsed':
  3314.       case 'userscript-chatblock':
  3315.         attrElm = kRef(ytdFlexy);
  3316.         if (hasAttribute(attrElm, 'userscript-chat-collapsed')) {
  3317.           nls = flexyAttr_toggleFlag(nls, true, LAYOUT_CHATROOM | LAYOUT_CHATROOM_COLLASPED);
  3318.         } else {
  3319.           nls = flexyAttr_toggleFlag(nls, hasAttribute(attrElm, 'userscript-chatblock'), LAYOUT_CHATROOM);
  3320.           nls = flexyAttr_toggleFlag(nls, false, LAYOUT_CHATROOM_COLLASPED);
  3321.         }
  3322.         break;
  3323.       case 'is-two-columns_':
  3324.         nls = flexyAttr_toggleFlag(nls, isWideScreenWithTwoColumns(), LAYOUT_TWO_COLUMNS);
  3325.         break;
  3326.  
  3327.       case 'tabview-selection':
  3328.         b = isNonEmptyString(kRef(ytdFlexy).getAttribute('tabview-selection'));
  3329.         nls = flexyAttr_toggleFlag(nls, b, LAYOUT_TAB_EXPANDED);
  3330.         break;
  3331.  
  3332.       case 'fullscreen':
  3333.         b = isNonEmptyString(kRef(ytdFlexy).getAttribute('fullscreen'));
  3334.         nls = flexyAttr_toggleFlag(nls, b, LAYOUT_FULLSCREEN);
  3335.         break;
  3336.  
  3337.       case 'userscript-engagement-panel':
  3338.         v = kRef(ytdFlexy).getAttribute('userscript-engagement-panel');
  3339.         b = (+v > 0)
  3340.         nls = flexyAttr_toggleFlag(nls, b, LAYOUT_ENGAGEMENT_PANEL_EXPAND);
  3341.         break;
  3342.  
  3343.     }
  3344.  
  3345.     return nls;
  3346.  
  3347.  
  3348.   }
  3349.  
  3350.   let mtf_attrFlexy = (mutations, observer) => {
  3351.  
  3352.     //attr mutation checker - $$ytdFlexyElm$$ {ytd-watch-flexy} \single
  3353.     //::attr    
  3354.     // ~ 'userscript-chat-collapsed', 'userscript-chatblock', 'theater', 'is-two-columns_', 
  3355.     // ~ 'tabview-selection', 'fullscreen', 'userscript-engagement-panel', 
  3356.     // ~ 'hidden'
  3357.  
  3358.     //console.log(15330, scriptEnable, kRef(ytdFlexy), mutations)
  3359.  
  3360.     if (!scriptEnable) return;
  3361.  
  3362.     const cssElm = kRef(ytdFlexy)
  3363.     if (!cssElm) return;
  3364.  
  3365.     if (!mutations) return;
  3366.  
  3367.     //console.log(15340)
  3368.     ytdFlexyHiddenCheck(mutations);
  3369.  
  3370.     const old_layoutStatus = wls.layoutStatus
  3371.     if (old_layoutStatus === null) return;
  3372.     let new_layoutStatus = old_layoutStatus;
  3373.  
  3374.     let checkedChat = false;
  3375.  
  3376.     for (const mutation of mutations) {
  3377.       new_layoutStatus = flexAttr_toLayoutStatus(new_layoutStatus, mutation.attributeName);
  3378.       if (mutation.attributeName == 'userscript-chat-collapsed' || mutation.attributeName == 'userscript-chatblock') {
  3379.  
  3380.         if(!checkedChat){
  3381.           checkedChat = true; // avoid double call
  3382.  
  3383.           if (cssElm.getAttribute('userscript-chatblock') === 'chat-live') {
  3384.             // assigned new attribute - "chat-live" => disable comments section
  3385.             _disableComments();
  3386.           }
  3387.  
  3388.           if (!cssElm.hasAttribute('userscript-chatblock')) {
  3389.             // might or might not collapsed before
  3390.             timeline.setTimeout(() => {
  3391.               if (!scriptEnable) return;
  3392.               //delayed call => check with the "no active focus" condition with chatroom status
  3393.               if (!isAnyActiveTab() && !isChatExpand() && !isTheater() && isWideScreenWithTwoColumns() && !isFullScreen()) {
  3394.                 setToActiveTab();
  3395.               }
  3396.             }, 240);
  3397.           }
  3398.         }
  3399.  
  3400.       }else if(mutation.attributeName == 'userscript-engagement-panel'){
  3401.         // assume any other active component such as tab content and chatroom
  3402.         
  3403.         if (+(cssElm.getAttribute('userscript-engagement-panel')||0)===0 && +mutation.oldValue>0) {
  3404.           timeline.setTimeout(() => {
  3405.             if (!scriptEnable) return;
  3406.             //delayed call => check with the "no active focus" condition with engagement panel status
  3407.             if (!isAnyActiveTab() && !isEngagementPanelExpanded() && !isTheater() && isWideScreenWithTwoColumns() && !isFullScreen() && !isChatExpand()) {
  3408.               setToActiveTab();
  3409.             }
  3410.           }, 240);
  3411.         }
  3412.       }
  3413.     }
  3414.  
  3415.     if (new_layoutStatus !== old_layoutStatus) wls.layoutStatus = new_layoutStatus
  3416.  
  3417.   }
  3418.  
  3419.   const mtf_checkFlexy = () => {
  3420.     // once per $$native-ytd-watch-flexy$$ {ytd-watch-flexy} detection
  3421.  
  3422.     let ytdFlexyElm = kRef(ytdFlexy);
  3423.     if (!scriptEnable || !ytdFlexyElm) return true;
  3424.  
  3425.  
  3426.     wls.layoutStatus = null;
  3427.  
  3428.     let isFlexyHidden = (deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden'));
  3429.  
  3430.     if (!isFlexyHidden) {
  3431.       let rChatExist = base_ChatExist();
  3432.       if (rChatExist) {
  3433.         let { attr_chatblock, attr_chatcollapsed } = rChatExist;
  3434.         if (attr_chatblock === null) {
  3435.           //remove attribute if it is unknown
  3436.           attr_chatblock = false;
  3437.           attr_chatcollapsed = false;
  3438.         }
  3439.         wAttr(ytdFlexyElm, 'userscript-chatblock', attr_chatblock)
  3440.         wAttr(ytdFlexyElm, 'userscript-chat-collapsed', attr_chatcollapsed)
  3441.       }
  3442.     }
  3443.  
  3444.     let rTabSelection = [...ytdFlexyElm.querySelectorAll('.tab-btn[userscript-tab-content]')]
  3445.       .map(elm => ({ elm, hidden: elm.classList.contains('tab-btn-hidden') }));
  3446.  
  3447.     if(rTabSelection.length === 0){
  3448.       wAttr(ytdFlexyElm, 'tabview-selection', false);
  3449.     }else{
  3450.       rTabSelection=rTabSelection.filter(entry => entry.hidden !== true); // all available tabs
  3451.       if (rTabSelection.length === 0) wAttr(ytdFlexyElm, 'tabview-selection', '');
  3452.     }
  3453.     rTabSelection = null;
  3454.       
  3455.     let rEP = engagement_panels_();
  3456.     if (rEP && rEP.count > 0) wAttr(ytdFlexyElm, 'userscript-engagement-panel', false);
  3457.     //else wAttr(ytdFlexyElm, 'userscript-engagement-panel', rEP.value + ""); // can be 0
  3458.     else if(rEP.value>0) wAttr(ytdFlexyElm, 'userscript-engagement-panel', rEP.value + ""); // can be 0
  3459.  
  3460.     let ls = 0;
  3461.     ls = flexAttr_toLayoutStatus(ls, 'theater')
  3462.     ls = flexAttr_toLayoutStatus(ls, 'userscript-chat-collapsed')
  3463.     ls = flexAttr_toLayoutStatus(ls, 'userscript-chatblock')
  3464.     ls = flexAttr_toLayoutStatus(ls, 'is-two-columns_')
  3465.     ls = flexAttr_toLayoutStatus(ls, 'tabview-selection')
  3466.     ls = flexAttr_toLayoutStatus(ls, 'fullscreen')
  3467.     ls = flexAttr_toLayoutStatus(ls, 'userscript-engagement-panel')
  3468.  
  3469.     wls.layoutStatus = ls
  3470.  
  3471.     mtoFlexyAttr.bindElement(ytdFlexyElm,{
  3472.       attributes: true,
  3473.       attributeFilter: ['userscript-chat-collapsed', 'userscript-chatblock', 'theater', 'is-two-columns_', 'tabview-selection', 'fullscreen', 'userscript-engagement-panel', 'hidden'],
  3474.       attributeOldValue: true
  3475.     })
  3476.  
  3477.     ytdFlexyHiddenCheckBasic(ytdFlexyElm);
  3478.  
  3479.  
  3480.     let columns = document.querySelector('ytd-page-manager#page-manager #columns')
  3481.     if (columns) {
  3482.       wAttr(columns, 'userscript-scrollbar-render', true);
  3483.     }
  3484.  
  3485.     return false;
  3486.   }
  3487.   
  3488.  
  3489.   function ytdFlexyHiddenCheckBasic(ytdFlexyElm){
  3490.     // for both hidden and non-hidden ytd-watch-flexy
  3491.  
  3492.     deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden');
  3493.  
  3494.    // console.log(15403)
  3495.     document.documentElement.classList.toggle('tabview-normal-player',!deferredVarYTDHidden)
  3496.  
  3497.   }
  3498.  
  3499.   function checkVisibleEngagementPanel(){
  3500.     
  3501.     if(storeLastPanel){
  3502.  
  3503.       let elm_storeLastPanel = kRef(storeLastPanel);
  3504.  
  3505.       if(elm_storeLastPanel && !isDOMVisible(elm_storeLastPanel) ){
  3506.         storeLastPanel=null;
  3507.         ytBtnCloseEngagementPanels();
  3508.       }
  3509.  
  3510.     }
  3511.  
  3512.   }
  3513.  
  3514.   function ytdFlexyHiddenCheck(mutations) {
  3515.  
  3516.     //console.log(15350)
  3517.  
  3518.     const ytdFlexyElm = kRef(ytdFlexy)
  3519.     if (!ytdFlexyElm) return;
  3520.     let muHidden = false
  3521.  
  3522.     for (const mutation of mutations) {
  3523.       if (mutation.attributeName === 'hidden') {
  3524.         //console.log(343)
  3525.         muHidden = true;
  3526.         break;
  3527.       }
  3528.     }
  3529.  
  3530.     if (!muHidden) return;
  3531.     
  3532.  
  3533.     
  3534.     mtc_store= Date.now()+2870
  3535.     //console.log(7004)
  3536.     deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden');
  3537.  
  3538.     
  3539.     if(deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0){
  3540.       scheduledCommentRefresh=false;
  3541.     } 
  3542.  
  3543.     //console.log(15400)
  3544.     if(!deferredVarYTDHidden){
  3545.       mtf_forceCheckLiveVideo_disable = 0  
  3546.       timeline.setTimeout(function() {
  3547.         mtf_ChatExist();  
  3548.         layoutStatusMutex.lockWith(unlock=>{
  3549.           atChange(); // in case no mutation occurance
  3550.           ytdFlexyHiddenCheckBasic(ytdFlexyElm);
  3551.           dispatchWindowResize(); // player control positioning
  3552.           timeline.setTimeout(unlock, 40);          
  3553.         })        
  3554.       }, 40);
  3555.     }else{
  3556.       //console.log(15401)
  3557.       timeline.setTimeout(function() {
  3558.         //console.log(15402)
  3559.         ytdFlexyHiddenCheckBasic(ytdFlexyElm);
  3560.       }, 40);
  3561.     }
  3562.  
  3563.   }
  3564.  
  3565.  
  3566.  
  3567.  
  3568.   let switchTabActivity_lastTab = null
  3569.  
  3570.   function setDisplayedPlaylist() {
  3571.     //override the default youtube coding event prevention
  3572.     let cssElm = kRef(ytdFlexy);
  3573.     if (!scriptEnable || !cssElm) return;
  3574.     displayedPlaylist = mWeakRef(document.querySelector('ytd-watch-flexy #tab-list:not(.tab-content-hidden) ytd-playlist-panel-renderer') || null);
  3575.   }
  3576.  
  3577.  
  3578.   
  3579.   let recordScrollTop = 0
  3580.  
  3581.   function switchTabActivity(activeLink) {
  3582.     if (!scriptEnable) return;
  3583.  
  3584.     const ytdFlexyElm = kRef(ytdFlexy);
  3585.  
  3586.     if (!ytdFlexyElm) return;
  3587.  
  3588.     if (activeLink && activeLink.classList.contains('tab-btn-hidden')) return; // not allow to switch to hide tab
  3589.  
  3590.     if (isTheater() && isWideScreenWithTwoColumns()) activeLink = null;
  3591.  
  3592.     /*
  3593.     let isPrevTabComments = document.querySelector('.tab-content-cld:not(.tab-content-hidden)');
  3594.     isPrevTabComments=isPrevTabComments&&isPrevTabComments.matches('#tab-comments')
  3595.  
  3596.     if(isPrevTabComments){
  3597.     
  3598.       let comments_tab = document.querySelector('#tab-comments');
  3599.       if(comments_tab){
  3600.         let st = comments_tab.scrollTop;
  3601.         if(st>=0) recordScrollTop = st;
  3602.       }
  3603.  
  3604.  
  3605.     }
  3606.     */
  3607.  
  3608.     function runAtEnd() {
  3609.  
  3610.       
  3611.     //console.log(12312)
  3612.  
  3613.       if (activeLink) lastShowTab = activeLink.getAttribute('userscript-tab-content')
  3614.  
  3615.       displayedPlaylist = null;
  3616.       scrollingVideosList = null;
  3617.  
  3618.       if (activeLink && lastShowTab == '#tab-list') {
  3619.         setDisplayedPlaylist();
  3620.       } else if (activeLink && lastShowTab == '#tab-videos') {
  3621.         scrollingVideosList = mWeakRef(document.querySelector('ytd-watch-flexy #tab-videos:not(.tab-content-hidden) [placeholder-videos]'));
  3622.       }
  3623.  
  3624.  
  3625.       ytdFlexyElm.setAttribute('tabview-selection', activeLink ? lastShowTab : '')
  3626.  
  3627.       if (lastShowTab == '#tab-comments' && (ytdFlexyElm.getAttribute('tabview-youtube-comments') || '').lastIndexOf('S') >= 0) {
  3628.  
  3629.         
  3630.         if(mtf_forceCheckLiveVideo_disable===2) {}
  3631.         else{
  3632.           akAttr(ytdFlexyElm, 'tabview-youtube-comments', false, 'L');
  3633.  
  3634.           /*
  3635.           requestAnimationFrame(() => {
  3636.             let comments_tab = document.querySelector('#tab-comments');
  3637.             if (comments_tab && comments_tab.scrollTop > 0) comments_tab.scrollTop = 0;
  3638.           });
  3639.           */
  3640.         }
  3641.  
  3642.       }
  3643.  
  3644.       /*
  3645.     let isNewTabComments = document.querySelector('.tab-content-cld:not(.tab-content-hidden)')
  3646.     
  3647.     isNewTabComments=isNewTabComments&&isNewTabComments.matches('#tab-comments')
  3648.  
  3649.     if(isNewTabComments){
  3650.       
  3651.       let comments_tab = document.querySelector('#tab-comments');
  3652.       if(comments_tab){
  3653.         let st = comments_tab.scrollTop;
  3654.         if(Math.abs(st-recordScrollTop)>0.9) comments_tab.scrollTop=recordScrollTop;
  3655.       }
  3656.  
  3657.       
  3658.       
  3659.     }
  3660.     */
  3661.  
  3662.  
  3663.     }
  3664.  
  3665.     const links = document.querySelectorAll('#material-tabs a[userscript-tab-content]');
  3666.  
  3667.  
  3668.  
  3669.     for (const link of links) {
  3670.       let content = document.querySelector(link.getAttribute('userscript-tab-content'));
  3671.       if (link && content) {
  3672.         if (link !== activeLink) {
  3673.           link.classList.remove("active");
  3674.           content.classList.add("tab-content-hidden");
  3675.         } else {
  3676.           link.classList.add("active");
  3677.           content.classList.remove("tab-content-hidden");
  3678.           //timeline.setTimeout(()=>content.focus(),400);
  3679.  
  3680.         }
  3681.       }
  3682.     }
  3683.  
  3684.     runAtEnd();
  3685.  
  3686.  
  3687.   }
  3688.  
  3689.   let tabsUiScript_setclick = false;
  3690.  
  3691.   function prepareTabBtn() {
  3692.  
  3693.     const materialTab = document.querySelector("#material-tabs")
  3694.     if (!materialTab) return;
  3695.  
  3696.     let noActiveTab = !!document.querySelector('ytd-watch-flexy[userscript-chatblock]:not([userscript-chat-collapsed])')
  3697.  
  3698.     const activeLink = materialTab.querySelector('a[userscript-tab-content].active:not(.tab-btn-hidden)')
  3699.     if (activeLink) switchTabActivity(noActiveTab ? null : activeLink)
  3700.  
  3701.     if (!tabsUiScript_setclick) {
  3702.       tabsUiScript_setclick = true;
  3703.       $(materialTab).on("click", "a", function(evt) {
  3704.  
  3705.         //console.log(8510)
  3706.         let ytdFlexyElm = kRef(ytdFlexy);
  3707.         if (!scriptEnable || !ytdFlexyElm) return null;
  3708.  
  3709.         if (!this.hasAttribute('userscript-tab-content')) return;
  3710.  
  3711.  
  3712.         evt.preventDefault();
  3713.  
  3714.         //console.log(8511)
  3715.  
  3716. /*
  3717.         if (this.getAttribute('userscript-tab-content') == '#tab-comments' && parseInt(ytdFlexyElm.getAttribute('tabview-youtube-comments') || '') < 0) {
  3718.           
  3719.         console.log(8512)
  3720.           return;
  3721.         }*/
  3722.  
  3723.         //console.log(8513)
  3724.         new Promise(requestAnimationFrame).then(() => {
  3725.  
  3726.  
  3727.           //console.log(8514)
  3728.           layoutStatusMutex.lockWith(unlock => {
  3729.  
  3730.             //console.log(8515)
  3731.             switchTabActivity_lastTab = this.getAttribute('userscript-tab-content');
  3732.  
  3733.             let isActiveAndVisible = this.classList.contains('tab-btn') && this.classList.contains('active') && !this.classList.contains('tab-btn-hidden')
  3734.  
  3735.             if (isWideScreenWithTwoColumns() && !isTheater() && isActiveAndVisible) {
  3736.               //optional
  3737.               timeline.setTimeout(unlock, 80);
  3738.               switchTabActivity(null);
  3739.               ytBtnSetTheater();
  3740.             } else if (isActiveAndVisible) {
  3741.               timeline.setTimeout(unlock, 80);
  3742.               switchTabActivity(null);
  3743.             } else {
  3744.               let pInterval = 60;
  3745.               if (isChatExpand() && isWideScreenWithTwoColumns()) {
  3746.                 ytBtnCollapseChat();
  3747.               } else if (isEngagementPanelExpanded() && isWideScreenWithTwoColumns()) {
  3748.                 ytBtnCloseEngagementPanels();
  3749.               } else if (isWideScreenWithTwoColumns() && isTheater() && !isFullScreen()) {
  3750.                 ytBtnCancelTheater();
  3751.               } else {
  3752.                 pInterval = 20;
  3753.               }
  3754.               //console.log(8518)
  3755.               timeline.setTimeout(() => {
  3756.                 timeline.setTimeout(makeBodyScroll, 20); // this is to make the image render
  3757.  
  3758.                 timeline.setTimeout(() => {
  3759.                   let rightTabs = document.querySelector('#right-tabs');
  3760.                   if (!isWideScreenWithTwoColumns() && rightTabs && rightTabs.offsetTop > 0 && this.classList.contains('active')) {
  3761.                     let tabButtonBar = document.querySelector('#material-tabs');
  3762.                     let tabButtonBarHeight = tabButtonBar ? tabButtonBar.offsetHeight : 0;
  3763.                     window.scrollTo(0, rightTabs.offsetTop - tabButtonBarHeight);
  3764.                   }
  3765.                 }, 60)
  3766.                // console.log(8519)
  3767.  
  3768.                 timeline.setTimeout(unlock, 80)
  3769.                 switchTabActivity(this)
  3770.  
  3771.               }, pInterval);
  3772.             }
  3773.  
  3774.  
  3775.           })
  3776.  
  3777.         })
  3778.  
  3779.  
  3780.  
  3781.  
  3782.       });
  3783.  
  3784.     }
  3785.  
  3786.   }
  3787.  
  3788.  
  3789.   // ---------------------------------------------------------------------------------------------
  3790.   document.addEventListener("yt-navigate-finish", onNavigationEnd)
  3791.   //yt-navigate-redirect
  3792.   //"yt-page-data-fetched"
  3793.   //yt-navigate-error
  3794.   //yt-navigate-start
  3795.   //yt-page-manager-navigate-start
  3796.   //"yt-navigate"
  3797.   //"yt-navigate-cache
  3798.  
  3799.   document.addEventListener("yt-navigate-cache",()=>{
  3800.     console.log('yt-navigate-cache')
  3801.   })
  3802.   document.addEventListener("yt-navigate-redirect",()=>{
  3803.     console.log('yt-navigate-redirect')
  3804.   })
  3805.  
  3806.   function forceConfig(){
  3807.     
  3808.     let trial = false;
  3809.     let f=()=>{
  3810.       if(trial) return;
  3811.       let b = true;
  3812.       try{
  3813.         document.dispatchEvent(new CustomEvent("me-func"))
  3814.         window.yt.config_.EXPERIMENT_FLAGS.kevlar_watch_metadata_refresh=true
  3815.       }catch(e){
  3816.         b=false;
  3817.       }
  3818.       if(b) trial = true;
  3819.  
  3820.     }
  3821.     f();
  3822.     requestAnimationFrame(f)
  3823.     setTimeout(f,30)
  3824.     setTimeout(f,300)
  3825.     
  3826.   }
  3827.  
  3828.   document.addEventListener("yt-navigate-start",()=>{
  3829.     console.log('yt-navigate-start')
  3830.     forceConfig();
  3831.   })
  3832.  
  3833.   document.addEventListener("yt-page-manager-navigate-start",()=>{
  3834.     console.log('yt-page-manager-navigate-start')
  3835.     forceConfig();
  3836.   })
  3837.  
  3838.  
  3839.   document.addEventListener("loadstart", (evt) => {
  3840.     if (!evt || !evt.target || evt.target.nodeName !== "VIDEO") return;
  3841.     let elm = evt.target;
  3842.     if (!elm.matches('#player video, #movie_player video, video[tabview-mainvideo]')) return;
  3843.  
  3844.     
  3845.     mtc_store= Date.now()+2870
  3846.  
  3847.     let src = elm.src;
  3848.     if (src !== lastVideoURL) {
  3849.       lastVideoURL = elm.src;
  3850.       elm.setAttribute('tabview-mainvideo', ''); // mainly for mini playing
  3851.     }
  3852.  
  3853.   }, true)
  3854.  
  3855.   // ---------------------------------------------------------------------------------------------
  3856.  
  3857.   let scrolling_lastD = 0;
  3858.  
  3859.   const singleColumnScrolling = function(/** @type {boolean} */  scrolling_lastF) {
  3860.     
  3861.     if (!scriptEnable || deferredVarYTDHidden) return;
  3862.  
  3863.     let pageY = scrollY;
  3864.     if (pageY < 10 && scrolling_lastD === 0 && !scrolling_lastF) return;
  3865.  
  3866.     let targetElm, header, navElm;
  3867.  
  3868.     Promise.resolve().then(() => {
  3869.  
  3870.       targetElm = document.querySelector("#right-tabs");
  3871.       if (!targetElm) return;
  3872.       header = targetElm.querySelector("header");
  3873.       if (!header) return;
  3874.       navElm = document.querySelector('#masthead-container, #masthead')
  3875.       if (!navElm) return;
  3876.       let navHeight = navElm ? navElm.offsetHeight : 0
  3877.  
  3878.       let elmY = targetElm.offsetTop
  3879.  
  3880.       let xyz = [elmY + navHeight, pageY, elmY - navHeight]
  3881.  
  3882.       let xyStatus = 0
  3883.       if (xyz[1] < xyz[2] && xyz[2] < xyz[0]) {
  3884.         // 1
  3885.         xyStatus = 1
  3886.       }
  3887.  
  3888.       if (xyz[0] > xyz[1] && xyz[1] > xyz[2]) {
  3889.  
  3890.         //2
  3891.         xyStatus = 2
  3892.  
  3893.       }
  3894.  
  3895.       if (xyz[2] < xyz[0] && xyz[0] < xyz[1]) {
  3896.         // 3
  3897.  
  3898.         xyStatus = 3
  3899.  
  3900.  
  3901.       }
  3902.  
  3903.       return xyStatus;
  3904.  
  3905.     }).then((xyStatus) => {
  3906.  
  3907.       if ((xyStatus == 2 || xyStatus == 3) && (scrolling_lastD === 0 || scrolling_lastF)) {
  3908.         scrolling_lastD = 1;
  3909.         let {
  3910.           offsetHeight
  3911.         } = header
  3912.         let {
  3913.           offsetWidth
  3914.         } = targetElm
  3915.  
  3916.         targetElm.style.setProperty("--userscript-sticky-width", offsetWidth + 'px')
  3917.         targetElm.style.setProperty("--userscript-sticky", offsetHeight + 'px')
  3918.  
  3919.         wAttr(targetElm, 'userscript-sticky', true);
  3920.  
  3921.       } else if ((xyStatus == 1) && (scrolling_lastD === 1 || scrolling_lastF)) {
  3922.         scrolling_lastD = 0;
  3923.  
  3924.         wAttr(targetElm, 'userscript-sticky', false);
  3925.       }
  3926.  
  3927.  
  3928.       targetElm = null;
  3929.       header = null;
  3930.       navElm = null;
  3931.  
  3932.     });
  3933.  
  3934.   };
  3935.  
  3936.   window.addEventListener("scroll", function() {
  3937.     singleColumnScrolling(false)
  3938.   }, {
  3939.     capture: false,
  3940.     passive: true
  3941.   })
  3942.  
  3943.   let lastResizeAt = 0;
  3944.   window.addEventListener('resize', function() {
  3945.  
  3946.     if (!scriptEnable) return;
  3947.     if (deferredVarYTDHidden) return;
  3948.     lastResizeAt = Date.now();
  3949.  
  3950.     requestAnimationFrame(() => {
  3951.       singleColumnScrolling(true)
  3952.     })
  3953.  
  3954.   }, {
  3955.     capture: false,
  3956.     passive: true
  3957.   })
  3958.  
  3959.  
  3960.  
  3961.   
  3962.   let hist = null
  3963.   const getHistState = (history)=>`${history.length}|${history.state?history.state.entryTime:null}`;
  3964.   function newVideoPageCheck(){
  3965.     let hState = getHistState(history)
  3966.     if(hist!==hState) {
  3967.       hist=hState;
  3968.       if(scriptEnable){
  3969.         //scriptEnable = false;
  3970.         let callTimeout = !newVideoPage.entryTime
  3971.         newVideoPage.entryTime = 1
  3972.         if(callTimeout) setTimeout(newVideoPage,0)
  3973.         
  3974.       }
  3975.       return true;
  3976.     }
  3977.   }
  3978.   function newVideoPage(){
  3979.     newVideoPage.entryTime = 0;
  3980.  
  3981.     console.log('newVideoPage')
  3982.     
  3983.     //console.log('newVideoPage-', 150, location.href)
  3984.  
  3985.     let ytdFlexyElm = kRef(ytdFlexy);
  3986.     if(!ytdFlexyElm) return;
  3987.  
  3988.     timeline.reset();
  3989.     layoutStatusMutex = new Mutex();
  3990.  
  3991.     //console.log('newVideoPage-', 350, location.href)
  3992.     
  3993.     let flag1= /^https?\:\/\/(\w+\.)*youtube\.com\/watch\?(\w+\=[^\/\?\&]+\&|\w+\=?\&)*v=[\w\-\_]+/.test(location.href)
  3994.     let tf = ()=>{
  3995.  
  3996.       let isFlexyHidden = (deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden'));
  3997.  
  3998.       let flag2 = !isFlexyHidden;
  3999.  
  4000.       if(flag1^flag2) return timeline.setTimeout(tf,7); else funcVisibleWatch();
  4001.  
  4002.       tf= null;
  4003.       funcVisibleWatch = null;
  4004.       ytdFlexyElm=null
  4005.  
  4006.     }
  4007.  
  4008.     let funcVisibleWatch = ()=>{
  4009.       
  4010.       //scriptEnable = true;
  4011.  
  4012.       let isFlexyHidden = (deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden'));
  4013.       ytdFlexyHiddenCheckBasic(ytdFlexyElm)
  4014.  
  4015.       if(!isFlexyHidden) {
  4016.  
  4017.         mtf_forceCheckLiveVideo_disable = 0;
  4018.         mtc_store= Date.now()+2870
  4019.  
  4020.         sect_lastUpdate = 0;
  4021.         if(pendingOne){
  4022.           // reset pendingOne = false if the element is already removed.
  4023.           pendingOne = document.querySelectorAll(`ytd-watch-flexy ytd-comments#comments [tabview-cache-time]`).length>1;
  4024.         }
  4025.  
  4026.         timeline.setTimeout(()=>{
  4027.           Q.mutationTarget=null;
  4028.           FP.mtf_attrComments()
  4029.         },2870)
  4030.     
  4031.         if(pageInit_attrComments) hookSection();
  4032.  
  4033.  
  4034.  
  4035.  
  4036.  
  4037.         
  4038.         let new_layoutStatus = wls.layoutStatus 
  4039.  
  4040.         const new_isExpandedChat = !(new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  4041.         const new_isCollaspedChat = (new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  4042.     
  4043.         const new_isTwoColumns = new_layoutStatus & LAYOUT_TWO_COLUMNS;
  4044.         const new_isTheater = new_layoutStatus & LAYOUT_THEATER;
  4045.         const new_isTabExpanded = new_layoutStatus & LAYOUT_TAB_EXPANDED;
  4046.         const new_isFullScreen = new_layoutStatus & LAYOUT_FULLSCREEN;
  4047.         const new_isExpandEPanel = new_layoutStatus & LAYOUT_ENGAGEMENT_PANEL_EXPAND;
  4048.  
  4049.         if( ytdFlexyElm.getAttribute('tabview-selection')==='' && new_isTwoColumns && !new_isTheater && !new_isTabExpanded && !new_isFullScreen && !new_isExpandEPanel && !new_isExpandedChat ){
  4050.           // e.g. engage panel removed after miniview and change video
  4051.           setToActiveTab();
  4052.         }else if(new_isExpandEPanel && ytdFlexyElm.querySelectorAll('ytd-engagement-panel-section-list-renderer[visibility="ENGAGEMENT_PANEL_VISIBILITY_EXPANDED"]').length===0){
  4053.           wls.layoutStatus = new_layoutStatus & (~LAYOUT_ENGAGEMENT_PANEL_EXPAND)
  4054.         }
  4055.  
  4056.         //mtf_attrFlexy();
  4057.  
  4058.         FP.mtf_attrEngagementPanel();
  4059.       
  4060.         FP.mtf_attrPlaylist();
  4061.       
  4062.         FP.mtf_attrComments();   
  4063.       
  4064.         FP.mtf_attrChatroom();
  4065.  
  4066.  
  4067.       }
  4068.  
  4069.       regularCheck(1,0,null); // mutation happens when the page is not ready; call again as the page is ready.
  4070.  
  4071.  
  4072.  
  4073.       
  4074.  
  4075.     }
  4076.     
  4077.  
  4078.     
  4079.     tf();
  4080.     
  4081.  
  4082.  
  4083.   }
  4084.  
  4085.  
  4086.  
  4087.   function browserHistoryState(){
  4088.     let maxCount = 5
  4089.  
  4090.     if (!scriptEnable) return;
  4091.     
  4092.     let ytdFlexyElm = kRef(ytdFlexy);
  4093.     if(!ytdFlexyElm) return;
  4094.  
  4095.     let cid = timeline.setInterval(function(){
  4096.       if(newVideoPageCheck()){
  4097.         timeline.clearInterval(cid);
  4098.       }
  4099.       if(--maxCount===0) timeline.clearInterval(cid);
  4100.     },7)
  4101.  
  4102.   }
  4103.  
  4104.  
  4105.   window.addEventListener('hashchange', function() {
  4106.     if (!scriptEnable) return;
  4107.     console.log('hashchange');
  4108.     browserHistoryState();
  4109.   }, { capture: true })
  4110.  
  4111.   window.addEventListener('popstate', function() {
  4112.     if (!scriptEnable) return;
  4113.     console.log('popstate');
  4114.     browserHistoryState();
  4115.   }, { capture: true })
  4116.  
  4117.  
  4118.   // function clearMutationObserver(o, key) {
  4119.   //   if (o[key]) {
  4120.   //     o[key].takeRecords();
  4121.   //     o[key].disconnect();
  4122.   //     o[key] = null;
  4123.   //     return true;
  4124.   //   }
  4125.   // }
  4126.  
  4127.   // function initMutationObserver(o, key, callback) {
  4128.   //   clearMutationObserver(o, key);
  4129.   //   const mto = new MutationObserver(callback);
  4130.   //   o[key] = mto;
  4131.   //   return mto;
  4132.   // }
  4133.   // function initMutationObserver2(o, key, mtoFunc) {
  4134.   //   clearMutationObserver(o, key);
  4135.   //   const mto = mtoFunc();
  4136.   //   o[key] = mto;
  4137.   //   return mto;
  4138.   // }
  4139.  
  4140.   document.addEventListener('wheel', function(evt) {
  4141.  
  4142.     if (!scriptEnable) return;
  4143.     const displayedPlaylist_element = kRef(displayedPlaylist);
  4144.     if (displayedPlaylist_element && displayedPlaylist_element.contains(evt.target)) {
  4145.       evt.stopPropagation();
  4146.       evt.stopImmediatePropagation();
  4147.     }
  4148.   }, { capture: true, passive: true });
  4149.  
  4150.  
  4151.   function setVideosTwoColumns(/** @type {number} */ flag, /** @type {boolean} */ bool) {
  4152.  
  4153.     //two columns to one column
  4154.  
  4155.     /*
  4156.         [placeholder-videos] ytd-watch-next-secondary-results-renderer.style-scope.ytd-watch-flexy
  4157.  
  4158.         is-two-columns =""  => no is-two-columns
  4159.         
  4160.         
  4161.         
  4162.         [placeholder-videos] tp-yt-paper-spinner#spinner.style-scope.ytd-continuation-item-renderer
  4163.         
  4164.         no hidden => hidden =""
  4165.         
  4166.         
  4167.         [placeholder-videos] div#button.style-scope.ytd-continuation-item-renderer
  4168.         
  4169.         
  4170.         hidden ="" => no hidden
  4171.         
  4172.  
  4173.         */
  4174.  
  4175.     let cssSelector1 = '[placeholder-videos] ytd-watch-next-secondary-results-renderer.style-scope.ytd-watch-flexy'
  4176.  
  4177.     let cssSelector2 = '[placeholder-videos] tp-yt-paper-spinner#spinner.style-scope.ytd-continuation-item-renderer'
  4178.  
  4179.     let cssSelector3 = '[placeholder-videos] div#button.style-scope.ytd-continuation-item-renderer'
  4180.  
  4181.     let res = {}
  4182.     if (flag & 1) {
  4183.       res.m1 = document.querySelector(cssSelector1)
  4184.       if (res.m1) wAttr(res.m1, 'is-two-columns', bool ? '' : false);
  4185.     }
  4186.  
  4187.     if (flag & 2) {
  4188.       res.m2 = document.querySelector(cssSelector2)
  4189.       if (res.m2) wAttr(res.m2, 'hidden', bool ? false : '');
  4190.     }
  4191.  
  4192.     if (flag & 4) {
  4193.       res.m3 = document.querySelector(cssSelector3)
  4194.       if (res.m3) wAttr(res.m3, 'hidden', bool ? '' : false);
  4195.     }
  4196.  
  4197.  
  4198.     return res
  4199.  
  4200.  
  4201.  
  4202.  
  4203.   }
  4204.  
  4205.   let lastScrollFetch = 0;
  4206.   // function isScrolledToEnd(){
  4207.   //     return (window.innerHeight + window.pageYOffset) >= document.scrollingElement.scrollHeight - 2;
  4208.   // }
  4209.   let lastOffsetTop = 0;
  4210.   window.addEventListener('scroll', function(evt) {
  4211.  
  4212.     //console.log(evt.target)
  4213.  
  4214.     if (!scriptEnable) return;
  4215.  
  4216.  
  4217.     if (!kRef(scrollingVideosList)) return;
  4218.     if (videoListBeforeSearch) return;
  4219.  
  4220.  
  4221.  
  4222.     let visibleHeight = document.scrollingElement.clientHeight;
  4223.     let totalHeight = document.scrollingElement.scrollHeight;
  4224.  
  4225.     if (totalHeight < visibleHeight * 1.5) return; // filter out two column view;
  4226.  
  4227.     let z = window.pageYOffset + visibleHeight;
  4228.     let h_advanced = totalHeight - (visibleHeight > 5 * 40 ? visibleHeight * 0.5 : 40);
  4229.  
  4230.  
  4231.  
  4232.     if (z > h_advanced && !isWideScreenWithTwoColumns()) {
  4233.  
  4234.       let ct = Date.now();
  4235.       if (ct - lastScrollFetch < 500) return; //prevent continuous calling
  4236.  
  4237.       lastScrollFetch = ct;
  4238.  
  4239.       let res = setVideosTwoColumns(2 | 4, true)
  4240.       if (res.m3 && res.m2) {
  4241.  
  4242.         //wait for DOM change, just in case
  4243.         requestAnimationFrame(() => {
  4244.           let { offsetTop } = res.m2 // as visibility of m2 & m3 switched.
  4245.  
  4246.           if (offsetTop - lastOffsetTop < 40) return; // in case bug, or repeating calling.  // the next button shall below the this button 
  4247.           lastOffsetTop = offsetTop
  4248.  
  4249.           res.m2.parentNode.dispatchEvent(new Event('yt-service-request-sent-button-renderer'))
  4250.  
  4251.           res = null
  4252.         })
  4253.  
  4254.       } else {
  4255.  
  4256.         res = null
  4257.       }
  4258.  
  4259.  
  4260.     }
  4261.  
  4262.  
  4263.  
  4264.  
  4265.   }, { passive: true })
  4266.  
  4267.   let sect_lastUpdate = 0;
  4268.  
  4269.   let sect_holder = null;
  4270.   let sect_hText = null;
  4271.   let sect_hTime = 0;
  4272.  
  4273.   let pendingOne = false;
  4274.   let mtf_forceCheckLiveVideo_disable = 0;
  4275.  
  4276.   let storeLastPanel = null;
  4277.  
  4278.   /** @type {boolean | null} */
  4279.   let deferredVarYTDHidden = null;
  4280.   let scheduledCommentRefresh = false;
  4281.  
  4282.   let pageInit_attrComments = false;
  4283.  
  4284.  
  4285.  
  4286.   let mgChatFrame = {
  4287.     setVar(elm) {
  4288.       mgChatFrame.kVar = mWeakRef(elm)
  4289.     },
  4290.     getVar() {
  4291.       return kRef(mgChatFrame.kVar)
  4292.     },
  4293.     inPage() {
  4294.       let elm = mgChatFrame.getVar();
  4295.       if (!elm) return false;
  4296.       let ytdFlexyElm = kRef(ytdFlexy);
  4297.       if(!ytdFlexyElm) return false;
  4298.       return ytdFlexyElm.contains(elm)
  4299.     }
  4300.   };
  4301.  
  4302.   const timeline = {
  4303.     // after initialized (initObserver)
  4304.     cn1:{},
  4305.     cn2:{},
  4306.     setTimeout( /** @type {TimerHandler} */ f,/** @type {number} */ d){
  4307.       return timeline.cn1[setTimeout(f,d)]=true
  4308.     },
  4309.     clearTimeout(/** @type {number} */ cid){
  4310.       timeline.cn1[cid]=false; return clearTimeout(cid)
  4311.     },
  4312.     setInterval(/** @type {TimerHandler} */ f,/** @type {number} */ d){
  4313.       return timeline.cn2[setInterval(f,d)]=true
  4314.     },
  4315.     clearInterval(/** @type {number} */ cid){
  4316.       timeline.cn2[cid]=false; return clearInterval(cid)
  4317.     },
  4318.     reset(){
  4319.       for(let cid in timeline.cn1) timeline.cn1[cid] && clearTimeout(cid)
  4320.       for(let cid in timeline.cn2) timeline.cn2[cid] && clearInterval(cid)
  4321.       timeline.cn1={}
  4322.       timeline.cn2={}
  4323.     }
  4324.   }
  4325.  
  4326.   class AttributeMutationObserver extends MutationObserver {
  4327.     constructor(flist){
  4328.       super((mutations, observer)=>{
  4329.         for(const mutation of mutations){
  4330.           if (mutation.type === 'attributes') {
  4331.             this.checker(mutation.target, mutation.attributeName)
  4332.           }
  4333.         }
  4334.       })
  4335.       this.flist=flist;
  4336.       this.res={}
  4337.     }
  4338.     
  4339.     takeRecords(){
  4340.       super.takeRecords();
  4341.     }
  4342.     disconnect(){
  4343.       this._target = null;
  4344.       super.disconnect();
  4345.     }
  4346.     observe(/** @type {Node} */ target){
  4347.       if(this._target) return; 
  4348.       this._target = mWeakRef(target);
  4349.       const options = {
  4350.         attributes: true,
  4351.         attributeFilter: Object.keys(this.flist),
  4352.         //attributeFilter: [ "status", "username" ],
  4353.         attributeOldValue: true
  4354.       }
  4355.       super.observe(target, options)
  4356.     }
  4357.     checker(/** @type {Node} */ target,/** @type {string} */ attributeName){
  4358.       let nv = target.getAttribute(attributeName);
  4359.       if(this.res[attributeName]!==nv){
  4360.         this.res[attributeName] = nv
  4361.         let f = this.flist[attributeName];
  4362.         if(f) f(attributeName, nv);
  4363.  
  4364.       }
  4365.     }
  4366.     check(delay = 0){
  4367.       setTimeout(()=>{
  4368.         let target = kRef(this._target)
  4369.         for(const key of Object.keys(this.flist)){
  4370.           this.checker(target,key)
  4371.         }
  4372.         target = null;
  4373.       },delay)
  4374.     }
  4375.   } 
  4376.  
  4377.   function goYoutubeGeniusLyrics(){
  4378.  
  4379.     setTimeout(function $f(){
  4380.  
  4381.       if(!document.documentElement.hasAttribute('w-engagement-panel-genius-lyrics')) return setTimeout($f,100)
  4382.  
  4383.       document.documentElement.dispatchEvent(new CustomEvent('engagement-panel-genius-lyrics'))
  4384.  
  4385.  
  4386.     },100)
  4387.  
  4388.  
  4389.  
  4390.   }
  4391.  
  4392.  
  4393.   /*
  4394.  
  4395.   To be implement: timeline
  4396.  
  4397.   timeline.setTimeout
  4398.   timeline.clearTimeout
  4399.   timeline.setInterval
  4400.   timeline.clearInterval
  4401.  
  4402.   */
  4403.  
  4404.  
  4405.  
  4406.   //Object.keys($0).filter(key=>!(key in $0.constructor.prototype))
  4407.  
  4408.   //Object.getOwnPropertyNames(window).filter(k=>k.startsWith('HTML'))
  4409.   //Object.getOwnPropertyNames(window).filter(k=>k.startsWith('HTML')).filter(k=>$0 instanceof window[k])
  4410.  
  4411.  
  4412.   /* --------------------------- browser's bug in -webkit-box ----------------------------------------- */
  4413.  
  4414.   /*
  4415.    fix bug for comment section - version 1.8.7 
  4416.   This issue is the bug in browser's rendering
  4417.    I guess, this is due to the lines clamp with display:-webkit-box 
  4418.    use stupid coding to let it re-render when its content become visible
  4419.    
  4420.   /*
  4421.  
  4422.   ytd-expander[should-use-number-of-lines][collapsed] > #content.ytd-expander {
  4423.       color: var(--yt-spec-text-primary);
  4424.       display: -webkit-box;
  4425.       overflow: hidden;
  4426.       max-height: none;
  4427.       -webkit-box-orient: vertical;
  4428.       -webkit-line-clamp: var(--ytd-expander-max-lines, 4);
  4429.   }
  4430.  
  4431.   // v1.8.36 imposed a effective solution for fixing this bug
  4432.  
  4433.   */
  4434.  
  4435.   /* --------------------------- browser's bug in -webkit-box ----------------------------------------- */
  4436.  
  4437.  
  4438.   /**
  4439.    * 
  4440.  
  4441.  
  4442. f.initChildrenObserver=function(){var a=this;this.observer=new MutationObserver(function(){return a.childrenChanged()});
  4443. this.observer.observe(this.$.content,{subtree:!0,childList:!0,attributes:!0});this.childrenChanged()};
  4444. f.childrenChanged=function(){var a=this;this.alwaysToggleable?this.canToggle=this.alwaysToggleable:this.canToggleJobId||(this.canToggleJobId=window.requestAnimationFrame(function(){$h(function(){a.canToggleJobId=0;a.calculateCanCollapse()})}))};
  4445.  
  4446.  
  4447. f.onIronResize=function(){this.recomputeOnResize&&this.childrenChanged()};
  4448.  
  4449.  
  4450. onButtonClick_:function(){this.fire("yt-close-upsell-dialog")},
  4451. computeHasHeader_:function(a){return!!a.headerBackgroundImage}});var geb;var heb;var ieb;var jeb;var xI=function(){var a=L.apply(this,arguments)||this;a.alignAuto=!1;a.collapsed=!0;a.isToggled=!1;a.alwaysCollapsed=!1;a.canToggle=!0;a.collapsedHeight=80;a.disableToggle=!1;a.alwaysToggleable=!1;a.reversed=!1;a.shouldUseNumberOfLines=!1;a.recomputeOnResize=!1;a.canToggleJobId=0;return a};
  4452. n(xI,L);f=xI.prototype;f.alwaysToggleableChanged=function(){this.alwaysToggleable&&(this.canToggle=!0)};
  4453.  
  4454.  
  4455. f.calculateCanCollapse=function(){this.canToggle=this.shouldUseNumberOfLines?this.alwaysToggleable||this.$.content.offsetHeight<this.$.content.scrollHeight:this.alwaysToggleable||this.$.content.scrollHeight>this.collapsedHeight};
  4456. f.detachObserver=function(){this.observer&&this.observer.disconnect()};
  4457.  
  4458.    * 
  4459.    * 
  4460.    * 
  4461.    */
  4462.  
  4463.  
  4464.  
  4465.  
  4466. })();
  4467.  
  4468.  
  4469.  
  4470.  
  4471.  
  4472.  
  4473.  
  4474.  
  4475.  
  4476.  
  4477.  
  4478.  
  4479.  
  4480.  
  4481.  
  4482.  
  4483.  
  4484.  
  4485.  
  4486.  
  4487.  
  4488.  
  4489.  
  4490.  
  4491.  
  4492.  
  4493.  
  4494.  
  4495.  
  4496.  
  4497.  
  4498.  
  4499.  
  4500.  
  4501.  
  4502.  
  4503.  
  4504.  
  4505.  
  4506.  
  4507.  
  4508.  
  4509.     // https://github.com/cyfung1031/Tabview-Youtube/raw/main/js/content.js
  4510.  
  4511. }
  4512.  
  4513.  
  4514. ;!(function $$() {
  4515.     'use strict';
  4516.  
  4517.     if(document.documentElement==null) return window.requestAnimationFrame($$)
  4518.  
  4519.     const cssTxt = GM_getResourceText("contentCSS");
  4520.  
  4521.     function addStyle (styleText) {
  4522.       const styleNode = document.createElement('style');
  4523.       styleNode.type = 'text/css';
  4524.       styleNode.textContent = styleText;
  4525.       document.documentElement.appendChild(styleNode);
  4526.       return styleNode;
  4527.     }
  4528.  
  4529.     addStyle (cssTxt);
  4530.  
  4531.     main(window.$);
  4532.  
  4533.  
  4534.     // Your code here...
  4535. })();