☰

Tabview Youtube

Make comments and lists into tabs for YouTube Videos

当前为 2022-07-16 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Tabview Youtube
  3. // @name:en      Tabview Youtube
  4. // @name:jp      Tabview Youtube
  5. // @name:zh-tw   Tabview Youtube
  6. // @name:zh-cn   Tabview Youtube
  7. // @namespace    http://tampermonkey.net/
  8. // @version     2.4.7
  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/06a843f4f5d4d3ab76227cbd35a8adf59615e77d/css/style_content.css
  21. // @resource     injectionJS1 https://raw.githubusercontent.com/cyfung1031/Tabview-Youtube/7282343d6a6535d4dc79535e39c28b76ab2f33cf/js/injection_script_1.js
  22. // @resource     injectionFixAutoComplete https://raw.githubusercontent.com/cyfung1031/Tabview-Youtube/06a843f4f5d4d3ab76227cbd35a8adf59615e77d/js/injectionScript_fixAutoComplete.js
  23. // @require      https://cdnjs.cloudflare.com/ajax/libs/cash/8.1.0/cash.min.js
  24. // @noframes
  25. // ==/UserScript==
  26.  
  27. /* jshint esversion:6 */
  28.  
  29. function main($){
  30.     // MIT License
  31.     // https://github.com/cyfung1031/Tabview-Youtube/raw/main/js/content.js
  32.  
  33.  
  34.  
  35.  
  36.  
  37.  
  38.  
  39.  
  40.  
  41.  
  42.  
  43.  
  44.  
  45.  
  46.  
  47.  
  48.  
  49.  
  50.  
  51. -(function() {
  52.  
  53.   function inIframe() {
  54.     try {
  55.       return window.self !== window.top;
  56.     } catch (e) {
  57.       return true;
  58.     }
  59.   }
  60.  
  61.   if (inIframe()) return;
  62.  
  63.   if (!$) return;
  64.  
  65.   /**
  66.    * SVG resources:
  67.    * <div>Icons made by <a href="https://www.flaticon.com/authors/smashicons" title="Smashicons">Smashicons</a> from <a href="https://www.flaticon.com/" title="Flaticon">www.flaticon.com</a></div>
  68.    */
  69.  
  70.   const scriptVersionForExternal = '2022/05/07';
  71.  
  72.   const isMyScriptInChromeRuntime = () => typeof((((window || 0).chrome || 0).runtime || 0).getURL) == 'function'
  73.  
  74.   const svgComments = `<path d="M40.068 13.465l-34.138.07A5.94 5.94 0 0 0 0 19.465v21.141a5.94 5.94 0 0 0 5.93 5.929H12v10a1 
  75.   1 0 0 0 1.74.673l9.704-10.675 16.626-.068A5.94 5.94 0 0 0 46 40.536V19.395a5.94 5.94 0 0 0-5.932-5.93zM10 23.465h13a1 
  76.   1 0 1 1 0 2H10a1 1 0 1 1 0-2zm26 14H10a1 1 0 1 1 0-2h26a1 1 0 1 1 0 2zm0-6H10a1 1 0 1 1 0-2h26a1 1 0 1 1 0 
  77.   2zm18.072-28.93l-34.142-.07A5.94 5.94 0 0 0 14 8.395v3.124l26.064-.054c4.377 0 7.936 3.557 7.936 7.93v21.07.071 
  78.   2.087l3.26 3.586a1 1 0 0 0 1.74-.673v-10h1.07A5.94 5.94 0 0 0 60 29.607V8.465a5.94 5.94 0 0 0-5.928-5.93z"/>`.trim();
  79.  
  80.   const svgVideos = `<path d="M298 33c0-13.255-10.745-24-24-24H24C10.745 9 0 19.745 0 33v232c0 13.255 10.745 24 24 
  81.   24h250c13.255 0 24-10.745 24-24V33zM91 39h43v34H91V39zM61 259H30v-34h31v34zm0-186H30V39h31v34zm73 
  82.   186H91v-34h43v34zm-11-82.292v-55.417c0-8.25 5.868-11.302 12.77-6.783l40.237 26.272c6.902 4.519 6.958 11.914.056 
  83.   16.434l-40.321 26.277c-6.902 4.52-12.742 1.467-12.742-6.783zM207 259h-43v-34h43v34zm0-186h-43V39h43v34zm61 
  84.   186h-31v-34h31v34zm0-186h-31V39h31v34z"/>`.trim();
  85.  
  86.   const svgInfo = `<path d="M11.812 0C5.289 0 0 5.289 0 11.812s5.289 11.813 11.812 11.813 11.813-5.29 11.813-11.813S18.335 
  87.   0 11.812 0zm2.459 18.307c-.608.24-1.092.422-1.455.548s-.783.189-1.262.189c-.736 
  88.   0-1.309-.18-1.717-.539s-.611-.814-.611-1.367c0-.215.015-.435.045-.659a8.23 8.23 0 0 1 
  89.   .147-.759l.761-2.688c.067-.258.125-.503.171-.731a3.24 3.24 0 0 0 
  90.   .068-.633c0-.342-.071-.582-.212-.717s-.412-.201-.813-.201c-.196 
  91.   0-.398.029-.605.09s-.383.12-.529.176l.201-.828c.498-.203.975-.377 1.43-.521s.885-.218 1.29-.218c.731 0 1.295.178 
  92.   1.692.53s.594.812.594 1.376c0 .117-.014.323-.041.617a4.13 4.13 0 0 1-.152.811l-.757 
  93.   2.68c-.062.215-.117.461-.167.736s-.073.485-.073.626c0 .356.079.599.239.728s.435.194.827.194a2.4 2.4 0 0 0 .626-.097 
  94.   3.56 3.56 0 0 0 .506-.17l-.203.827zm-.134-10.878c-.353.328-.778.492-1.275.492s-.924-.164-1.28-.492a1.57 1.57 0 
  95.   0 1-.533-1.193c0-.465.18-.865.533-1.196a1.81 1.81 0 0 1 1.28-.497 1.79 1.79 0 0 1 1.275.497c.353.331.53.731.53 
  96.   1.196s-.177.865-.53 1.193z"/>`.trim();
  97.  
  98.   const svgPlayList = `<path d="M0 64h256v42.667H0zm0 85.333h256V192H0zm0 85.334h170.667v42.667H0zm341.333 
  99.   0v-85.334h-42.666v85.334h-85.334v42.666h85.334v85.334h42.666v-85.334h85.334v-42.666z"/>`.trim();
  100.  
  101.   // --- Youtube Video Testing : 
  102.   // Square Video: https://www.youtube.com/watch?v=L0RXVnRbFg8 
  103.   // Square Video: https://www.youtube.com/watch?v=bK_rKhMIotU
  104.   // ---
  105.  
  106.  
  107.   const LAYOUT_TWO_COLUMNS = 1;
  108.   const LAYOUT_THEATER = 2;
  109.   const LAYOUT_FULLSCREEN = 4;
  110.   const LAYOUT_CHATROOM = 8;
  111.   const LAYOUT_CHATROOM_COLLASPED = 16;
  112.   const LAYOUT_TAB_EXPANDED = 32;
  113.   const LAYOUT_ENGAGEMENT_PANEL_EXPAND = 64;
  114.  
  115.   const mtoInterval1 = 40;
  116.   const mtoInterval2 = 150;
  117.  
  118.   let lastVideoURL = null; // for less attribute set only
  119.  
  120.  
  121.  
  122.   const querySelectorFromAnchor = HTMLElement.prototype.querySelector;
  123.   const querySelectorAllFromAnchor = HTMLElement.prototype.querySelectorAll;
  124.  
  125.  
  126.  
  127.   function scriptInjector(script_id, url_chrome, response_id){
  128.  
  129.     let res={
  130.       script_id: script_id,
  131.       inject: function(){
  132.  
  133.         let res = this, script_id = this.script_id;
  134.  
  135.         if(!document.querySelector(`script#${script_id}`)){
  136.           if (res.runtime_url){
  137.             addScriptByURL(res.runtime_url).id = script_id;
  138.           } else {
  139.             addScript(`${res.injection_script}`).id = script_id;
  140.           }
  141.         }
  142.  
  143.       }
  144.     }
  145.     res.script_id = script_id;
  146.     
  147.     if (isMyScriptInChromeRuntime()){
  148.       res.runtime_url = window.chrome.runtime.getURL(url_chrome)
  149.     } else {
  150.       res.injection_script = GM_getResourceText(response_id);
  151.     }
  152.  
  153.     return res;
  154.  
  155.  
  156.  
  157.   }
  158.  
  159.   const script_inject_facp = scriptInjector(
  160.     'userscript-tabview-injection-facp',
  161.     'js/injectionScript_fixAutoComplete.js',
  162.     "injectionFixAutoComplete");
  163.     
  164.   const script_inject_js1 = scriptInjector(
  165.     'userscript-tabview-injection-1',
  166.     'js/injection_script_1.js',
  167.     "injectionJS1");
  168.     
  169.  
  170.  
  171.  
  172.   
  173.   /** @type {WeakRef | null} */ 
  174.   const WeakRef = window.WeakRef;
  175.   const mWeakRef = WeakRef ? (o => o ? new WeakRef(o) : null) : (o => o || null);
  176.   /** @type {(wr: Object | null) => Object | null} */
  177.   const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr);
  178.  
  179.  
  180.  
  181.   const nonCryptoRandStr_base = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
  182.   function nonCryptoRandStr(/** @type {number} */ n){
  183.     const result = new Array(n);
  184.     const baseStr = nonCryptoRandStr_base;
  185.     const bLen = baseStr.length;
  186.     for ( let i = 0; i < n; i++ ) {
  187.       let t = null
  188.       do {
  189.         t = baseStr.charAt(Math.floor(Math.random() * bLen));
  190.       }while(i===0 && 10-t>0)
  191.       result[i]=t;
  192.    }
  193.    return result.join('');
  194.   }
  195.  
  196. /**
  197.  * Class definition
  198.  * @property {string} propName - propriety description
  199.  * ...
  200.  */
  201.   class ObserverRegister{
  202.     
  203.     constructor(/** @type {()=>MutationObserver | IntersectionObserver} */ observerCreator){
  204.       let uid = null;
  205.       const uidStore = ObserverRegister.uidStore;
  206.       do{
  207.         uid = nonCryptoRandStr(5);
  208.       }while(uidStore[uid])
  209.       uidStore[uid] = true;
  210.       
  211.       /**
  212.        * uid is the unique string for each observer
  213.        * @type {string}
  214.        * @public
  215.        */
  216.       this.uid = uid;
  217.       
  218.       /**
  219.        * observerCreator is a function to create the observer
  220.        * @type {Function}
  221.        * @public
  222.        */
  223.       this.observerCreator = observerCreator
  224.       
  225.       /**
  226.        * observer is the actual observer object
  227.        * @type {MutationObserver | IntersectionObserver}
  228.        * @public
  229.        */
  230.       this.observer = null;
  231.     }
  232.     bindElement(/** @type {HTMLElement} */ elm, ...args){
  233.       if(elm.hasAttribute(`o3r-${this.uid}`))return false;
  234.       elm.setAttribute(`o3r-${this.uid}`,'')
  235.       if(this.observer===null){
  236.         this.observer=this.observerCreator();
  237.       }
  238.       this.observer.observe(elm, ...args)
  239.       return true
  240.     }
  241.     clear(/** @type {boolean} */ flag){
  242.       if(this.observer !== null){
  243.         //const uidStore = ObserverRegister.uidStore;
  244.         if(flag === true){
  245.           this.observer.takeRecords();
  246.           this.observer.disconnect();
  247.         }
  248.         this.observer = null;
  249.         for(const s of document.querySelectorAll(`[o3r-${this.uid}]`)) s.removeAttribute(`o3r-${this.uid}`)
  250.         //uidStore[this.uid]=false;
  251.         //this.uid = null;
  252.       }
  253.     }
  254.   }
  255.  
  256.   /**
  257.  * 'uidStore' is the static store of strings used.
  258.  * @static
  259.  */
  260.   ObserverRegister.uidStore = {}; //backward compatible with FireFox 55.
  261.  
  262.   const mtoMutation_watchFlexy = new ObserverRegister(()=>{
  263.     return new MutationObserver(FP.mtoNavF)
  264.   });
  265.   const sa_wflexy = mtoMutation_watchFlexy.uid;
  266.  
  267.   const mtoMutation_body = new ObserverRegister(()=>{
  268.     return new MutationObserver(FP.mtoBodyF)
  269.   });
  270.   const sa_body = mtoMutation_body.uid;
  271.  
  272.   const mtoFlexyAttr = new ObserverRegister(()=>{
  273.     return new MutationObserver(mtf_attrFlexy)
  274.   });
  275.   const sa_flexyAttr = mtoFlexyAttr.uid;
  276.  
  277.   const mtoVisibility_EngagementPanel = new ObserverRegister(()=>{
  278.     return new MutationObserver(FP.mtf_attrEngagementPanel)
  279.   });
  280.   const sa_epanel = mtoVisibility_EngagementPanel.uid;
  281.  
  282.   const mtoVisibility_Playlist = new ObserverRegister(()=>{
  283.     return new AttributeMutationObserver({
  284.       "hidden": FP.mtf_attrPlaylist
  285.     })
  286.   })
  287.   const sa_playlist = mtoVisibility_Playlist.uid;
  288.  
  289.   const mtoVisibility_Comments = new ObserverRegister(()=>{
  290.     return new AttributeMutationObserver({
  291.       "hidden": FP.mtf_attrComments
  292.     })
  293.   })
  294.   const sa_comments = mtoVisibility_Comments.uid;
  295.  
  296.  
  297.   const mtoVisibility_Chatroom = new ObserverRegister(()=>{
  298.     return new AttributeMutationObserver({
  299.       "collapsed": FP.mtf_attrChatroom
  300.     })
  301.   })
  302.   const sa_chatroom = mtoVisibility_Chatroom.uid;
  303.  
  304.  
  305.  
  306.  
  307.  
  308.   function tracer(key, cmp) {
  309.     if (cmp > 0) return tracer[key] === cmp;
  310.     return (tracer[key] = Date.now());
  311.   }
  312.  
  313.   function racer(key, f) {
  314.     let now = Date.now();
  315.     const kTime = `${key}$$1`
  316.     let t = racer[kTime] || 0;
  317.  
  318.     if (now < t) {
  319.       const kCount = `${key}$$2`;
  320.       racer[kCount] = (racer[kCount] || 0) + 1;
  321.       if (racer[kCount] === 1) {
  322.         let g = f;
  323.         requestAnimationFrame(() => {
  324.           racer[kCount] = 0;
  325.           g();
  326.           g = null;
  327.         })
  328.       }
  329.     } else {
  330.       racer[kTime] = now + 16;
  331.       f();
  332.     }
  333.   }
  334.  
  335.   class ScriptEF {
  336.     constructor() {
  337.       this._id = scriptEC;
  338.     }
  339.     isValid() {
  340.       return this._id === scriptEC;
  341.     }
  342.   }
  343.  
  344.   class Timeout {
  345.  
  346.     set(f, d, repeatCount) {
  347.       if (this.cid > 0) return;
  348.       let sEF = new ScriptEF();
  349.       if (repeatCount > 0) {
  350.  
  351.         let rc = repeatCount;
  352.         const g = () => {
  353.           this.cid = 0;
  354.           if (!sEF.isValid()) return;
  355.           let res = f();
  356.           if (--rc <= 0) return;
  357.           if (res === true) this.cid = timeline.setTimeout(g, d);
  358.         }
  359.         g();
  360.  
  361.       } else {
  362.  
  363.         const g = () => {
  364.           this.cid = 0;
  365.           if (!sEF.isValid()) return;
  366.           if (f() === true) this.cid = timeline.setTimeout(g, d);
  367.         }
  368.         this.cid = timeline.setTimeout(g, d);
  369.       }
  370.     }
  371.  
  372.     clear() {
  373.       if (this.cid > 0) timeline.clearTimeout(this.cid);
  374.     }
  375.  
  376.     isEmpty() {
  377.       return !this.cid
  378.     }
  379.  
  380.  
  381.   }
  382.  
  383.   class Mutex {
  384.  
  385.     constructor() {
  386.       this.p = Promise.resolve()
  387.     }
  388.  
  389.     lockWith(f) {
  390.  
  391.       this.p = this.p.then(() => {
  392.         return new Promise(f)
  393.       }).catch(console.warn)
  394.     }
  395.  
  396.   }
  397.  
  398.  
  399.  
  400.   function prettyElm(/** @type {Element} */ elm) {
  401.     if (!elm || !elm.nodeName) return null;
  402.     const eId = elm.id || null;
  403.     const eClsName = elm.className || null;
  404.     return [elm.nodeName.toLowerCase(), typeof eId == 'string' ? "#" + eId : '', typeof eClsName == 'string' ? '.' + eClsName.replace(/\s+/g, '.') : ''].join('').trim();
  405.   }
  406.  
  407.   function extractTextContent(/** @type {Node} */ elm) {
  408.     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, '')
  409.   }
  410.  
  411.   function addScript(/** @type {string} */ scriptText) {
  412.     const scriptNode = document.createElement('script');
  413.     scriptNode.type = 'text/javascript';
  414.     scriptNode.textContent = scriptText;
  415.     try {
  416.       document.documentElement.appendChild(scriptNode);
  417.     } catch (e) {
  418.       console.log('addScript Error', e)
  419.     }
  420.     return scriptNode;
  421.   }
  422.  
  423.   function addScriptByURL(/** @type {string} */ scriptURL) {
  424.     const scriptNode = document.createElement('script');
  425.     scriptNode.type = 'text/javascript';
  426.     scriptNode.src = scriptURL;
  427.     try {
  428.       document.documentElement.appendChild(scriptNode);
  429.     } catch (e) {
  430.       console.log('addScriptByURL Error', e)
  431.     }
  432.     return scriptNode;
  433.   }
  434.  
  435.   function addStyle(/** @type {string} */ styleText, /** @type {HTMLElement | Document} */ container) {
  436.     const styleNode = document.createElement('style');
  437.     //styleNode.type = 'text/css';
  438.     styleNode.textContent = styleText;
  439.     (container || document.documentElement).appendChild(styleNode);
  440.     return styleNode;
  441.   }
  442.  
  443.  
  444.   const stopIframePropagation = function(/** @type {Event} */ evt){
  445.     if(scriptEnable && evt && evt.target && evt.target.nodeName=='IFRAME'){
  446.       evt.stopImmediatePropagation();
  447.       evt.stopPropagation();
  448.     }
  449.   }
  450.   document.addEventListener('mouseover', stopIframePropagation, true)
  451.   document.addEventListener('mouseout', stopIframePropagation, true)
  452.   document.addEventListener('mousedown', stopIframePropagation, true)
  453.   document.addEventListener('mouseup', stopIframePropagation, true)
  454.   document.addEventListener('keydown', stopIframePropagation, true)
  455.   document.addEventListener('keyup', stopIframePropagation, true)
  456.   document.addEventListener('mouseenter', stopIframePropagation, true)
  457.   document.addEventListener('mouseleave', stopIframePropagation, true)
  458.  
  459.  
  460.  
  461.   function isDOMVisible(/** @type {HTMLElement} */ elem) {
  462.     // jQuery version : https://github.com/jquery/jquery/blob/a684e6ba836f7c553968d7d026ed7941e1a612d8/src/css/hiddenVisibleSelectors.js
  463.     return !!(elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length);
  464.   }
  465.  
  466.   function isNonEmptyString(s) {
  467.     return typeof s == 'string' && s.length > 0;
  468.   }
  469.  
  470.  
  471.   async function nativeFunc(/** @type {EventTarget} */ dom, /** @type {string} */ property, /** @type {any} */ args) {
  472.     dom.dispatchEvent(new CustomEvent("userscript-call-dom-func", { detail: { property, args } }))
  473.   }
  474.  
  475.   // async function nativeValue(dom, property, args) {
  476.   //   dom.dispatchEvent(new CustomEvent("userscript-call-dom-value", { detail: { property, args } }))
  477.   // }
  478.   // async function nativeFuncStacked(/** @type {string} */ selector, /** @type {string} */ property, /** @type {any} */ args){
  479.   //   document.dispatchEvent(new CustomEvent("userscript-call-dom-func-stacked", { detail: { selector, property, args } }))
  480.   // }
  481.   // async function nativeValueStacked(selector, property, args){
  482.   //   document.dispatchEvent(new CustomEvent("userscript-call-dom-value-stacked", { detail: { selector, property, args } }))
  483.   // }
  484.   // async function nativeConstStacked(selector, property, args){
  485.   //   document.dispatchEvent(new CustomEvent("userscript-call-dom-const-stacked", { detail: { selector, property, args } }))
  486.   // }
  487.  
  488.  
  489.   function akAttr(/** @type {HTMLElement} */ cssElm, /** @type {String} */ attrName, /** @type {boolean} */ isNegative, /** @type {string | any} */ flag) {
  490.     // isNegative => incomplete loading
  491.  
  492.     let u = parseInt(cssElm.getAttribute(attrName) || 0) || 0;
  493.     let ak = Math.abs(u);
  494.  
  495.     if (ak > 100 && isNegative && u < 0) {
  496.  
  497.     } else if (ak > 100 && !isNegative && u > 0) {
  498.  
  499.     } else {
  500.       if (ak <= 100) {
  501.         ak = 101;
  502.       } else {
  503.         ak++;
  504.         if (ak >= 800) ak = 101;
  505.       }
  506.       // 101, 102, ... 799, 101 
  507.     }
  508.  
  509.     cssElm.setAttribute(attrName, `${ isNegative ? -ak : ak }${ flag || '' }`)
  510.   }
  511.  
  512.  
  513.  
  514.   let timeout_resize_for_layout_change = new Timeout();
  515.  
  516.   function dispatchWindowResize(){
  517.     // for youtube to detect layout resize for adjusting Player tools
  518.     return window.dispatchEvent(new Event('resize'));
  519.   }
  520.  
  521.  
  522.  
  523.   function layoutStatusChanged(/** @type {number} */ old_layoutStatus, /** @type {number} */ new_layoutStatus) {
  524.  
  525.  
  526.     if (old_layoutStatus === new_layoutStatus) return;
  527.  
  528.     const cssElm = kRef(ytdFlexy);
  529.  
  530.     if (!cssElm) return;
  531.  
  532.  
  533.     const new_isExpandedChat = !(new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  534.     const new_isCollaspedChat = (new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  535.  
  536.     const new_isTwoColumns = !!(new_layoutStatus & LAYOUT_TWO_COLUMNS);
  537.     const new_isTheater = !!(new_layoutStatus & LAYOUT_THEATER);
  538.     const new_isTabExpanded = !!(new_layoutStatus & LAYOUT_TAB_EXPANDED);
  539.     const new_isFullScreen = !!(new_layoutStatus & LAYOUT_FULLSCREEN);
  540.     const new_isExpandEPanel = !!(new_layoutStatus & LAYOUT_ENGAGEMENT_PANEL_EXPAND);
  541.  
  542.     
  543.  
  544.  
  545.     function showTabOrChat() {
  546.  
  547.       layoutStatusMutex.lockWith(unlock => {
  548.  
  549.         if (lastShowTab == '#chatroom') {
  550.  
  551.           if (new_isTabExpanded) switchTabActivity(null)
  552.           if (!new_isExpandedChat) ytBtnExpandChat();
  553.  
  554.         } else if (lastShowTab && lastShowTab.indexOf('#engagement-panel-') == 0) {
  555.  
  556.           if (new_isTabExpanded) switchTabActivity(null)
  557.           if (!new_isExpandEPanel) ytBtnOpenEngagementPanel(lastShowTab);
  558.  
  559.         } else {
  560.  
  561.           if (new_isExpandedChat) ytBtnCollapseChat()
  562.           if (!new_isTabExpanded) {setToActiveTab();}
  563.  
  564.         }
  565.  
  566.         timeline.setTimeout(unlock, 40);
  567.  
  568.       })
  569.     }
  570.  
  571.     function hideTabAndChat() {
  572.  
  573.       layoutStatusMutex.lockWith(unlock => {
  574.  
  575.         if (new_isTabExpanded) switchTabActivity(null)
  576.         if (new_isExpandedChat) ytBtnCollapseChat()
  577.         if (new_isExpandEPanel) ytBtnCloseEngagementPanels();
  578.  
  579.  
  580.         timeline.setTimeout(unlock, 40);
  581.  
  582.       })
  583.  
  584.     }
  585.  
  586.  
  587.     if (new_isExpandedChat || new_isTabExpanded || new_isExpandEPanel) {
  588.       if (statusCollasped !== 1) statusCollasped = 1;
  589.     } else {
  590.       if (statusCollasped === 1) statusCollasped = 2;
  591.     }
  592.  
  593.     let changes = 0;
  594.  
  595.     if (old_layoutStatus !== null) changes = old_layoutStatus ^ new_layoutStatus;
  596.  
  597.     let chat_collasped_changed = !!(changes & LAYOUT_CHATROOM_COLLASPED)
  598.     let tab_expanded_changed = !!(changes & LAYOUT_TAB_EXPANDED)
  599.     let theater_mode_changed = !!(changes & LAYOUT_THEATER)
  600.     let column_mode_changed = !!(changes & LAYOUT_TWO_COLUMNS)
  601.     let fullscreen_mode_changed = !!(changes & LAYOUT_FULLSCREEN)
  602.     let epanel_expanded_changed = !!(changes & LAYOUT_ENGAGEMENT_PANEL_EXPAND)
  603.  
  604.     let tab_change = (tab_expanded_changed ? 1 : 0) | (chat_collasped_changed ? 2 : 0) | (epanel_expanded_changed ? 4 : 0);
  605.  
  606.     let isChatOrTabExpandTriggering = tab_change == 0 ? false : (
  607.       (tab_expanded_changed && new_isTabExpanded) ||
  608.       (chat_collasped_changed && new_isExpandedChat) ||
  609.       (epanel_expanded_changed && new_isExpandEPanel)
  610.     );
  611.  
  612.     let isChatOrTabCollaspeTriggering = tab_change == 0 ? false : (
  613.       (tab_expanded_changed && !new_isTabExpanded) ||
  614.       (chat_collasped_changed && new_isCollaspedChat) ||
  615.       (epanel_expanded_changed && !new_isExpandEPanel)
  616.     );
  617.  
  618.  
  619.  
  620.     let moreThanOneShown = (new_isTabExpanded + new_isExpandedChat + new_isExpandEPanel) > 1
  621.  
  622.     let requestVideoResize = false;
  623.  
  624.     if (fullscreen_mode_changed || new_isFullScreen) {
  625.  
  626.     } else if(new_isTwoColumns && !new_isTheater && !column_mode_changed && (tab_change==2 || tab_change==4) && !new_isTabExpanded && new_isExpandedChat && new_isExpandEPanel){
  627.  
  628.       if(epanel_expanded_changed){
  629.         layoutStatusMutex.lockWith(unlock => {
  630.           ytBtnCollapseChat();
  631.           setTimeout(unlock,13)
  632.         })
  633.       }else if(chat_collasped_changed){
  634.         layoutStatusMutex.lockWith(unlock => {
  635.           ytBtnCloseEngagementPanels();
  636.           setTimeout(unlock,13)
  637.         })
  638.  
  639.       }
  640.  
  641.     } else if (tab_change == 0 && column_mode_changed && new_isTwoColumns && !new_isTheater && statusCollasped === 1 && moreThanOneShown) {
  642.  
  643.       showTabOrChat();
  644.       requestVideoResize = true;
  645.  
  646.     } else if (tab_change == 2 && new_isExpandedChat && new_isTwoColumns && !new_isTheater && statusCollasped === 1 && new_isTabExpanded && !column_mode_changed) {
  647.  
  648.       switchTabActivity(null);
  649.       requestVideoResize = true;
  650.  
  651.     } else if (isChatOrTabExpandTriggering && new_isTwoColumns && new_isTheater && statusCollasped === 1 && !theater_mode_changed && !column_mode_changed) {
  652.  
  653.       ytBtnCancelTheater();
  654.       requestVideoResize = true;
  655.  
  656.     } else if (new_isTwoColumns && new_isTheater && statusCollasped === 1) {
  657.  
  658.       hideTabAndChat();
  659.       requestVideoResize = true;
  660.  
  661.     } else if (isChatOrTabCollaspeTriggering && new_isTwoColumns && !new_isTheater && statusCollasped === 2 && !column_mode_changed) {
  662.  
  663.       ytBtnSetTheater();
  664.       requestVideoResize = true;
  665.  
  666.     } else if (tab_change == 0 && (column_mode_changed || theater_mode_changed) && new_isTwoColumns && !new_isTheater && statusCollasped !== 1) {
  667.  
  668.       showTabOrChat();
  669.       requestVideoResize = true;
  670.  
  671.     } else if (!new_isFullScreen && new_isTwoColumns && !new_isTheater && !new_isTabExpanded &&
  672.       (new_isCollaspedChat || !new_isExpandedChat) &&
  673.       !new_isExpandEPanel
  674.     ) {
  675.       // bug fix for restoring from mini player
  676.  
  677.       layoutStatusMutex.lockWith(unlock => {
  678.         setToActiveTab();
  679.         timeline.setTimeout(unlock, 40);
  680.       })
  681.  
  682.       requestVideoResize = true;
  683.  
  684.     } else if (tab_expanded_changed) {
  685.  
  686.       requestVideoResize = true;
  687.  
  688.     }
  689.  
  690.  
  691.     if (column_mode_changed && !chat_collasped_changed && new_isExpandedChat) {
  692.  
  693.       runAfterExpandChat();
  694.  
  695.     }
  696.  
  697.  
  698.  
  699.     if (requestVideoResize) {
  700.  
  701.       timeout_resize_for_layout_change.clear();
  702.       timeout_resize_for_layout_change.set(() => {
  703.         dispatchWindowResize();
  704.       }, 92)
  705.  
  706.     } else if (timeout_resize_for_layout_change.isEmpty() && (Date.now()) - lastResizeAt > 600) {
  707.       timeout_resize_for_layout_change.set(() => {
  708.         if ((Date.now()) - lastResizeAt > 600) dispatchWindowResize();
  709.       }, 62)
  710.     }
  711.  
  712.  
  713.  
  714.  
  715.   }
  716.  
  717.  
  718.  
  719.   const wls = new Proxy({
  720.     /** @type {number | null} */
  721.     layoutStatus:undefined
  722.   }, {
  723.     get: function(target, prop) {
  724.       return target[prop];
  725.     },
  726.     set: function(target, prop, value) {
  727.       if(prop=='layoutStatus'){
  728.           
  729.         if (value === null) {
  730.           statusCollasped = 0;
  731.           target[prop] = value;
  732.           return;
  733.         }else if(target[prop]===value){
  734.           return;
  735.         }else{
  736.           if (!target.layoutStatus_pending) {
  737.             target.layoutStatus_pending = true;
  738.             const old_layoutStatus = target[prop];
  739.             target[prop] = value;
  740.             layoutStatusMutex.lockWith(unlock => {
  741.               target.layoutStatus_pending = false;
  742.               layoutStatusChanged(old_layoutStatus, target[prop]);
  743.               timeline.setTimeout(unlock, 40)
  744.             })
  745.             return;
  746.           }
  747.         }
  748.       }
  749.       target[prop] = value;
  750.     },
  751.     has: function(target, prop) {
  752.       return (prop in target);
  753.     }
  754.   });
  755.  
  756.  
  757.  
  758.  
  759.  
  760.  
  761.   const svgElm = (w, h, vw, vh, p) => `<svg width="${w}" height="${h}" viewBox="0 0 ${vw} ${vh}" preserveAspectRatio="xMidYMid meet">${p}</svg>`
  762.  
  763.   let settings = {
  764.     defaultTab: "#tab-videos"
  765.   };
  766.  
  767.  
  768.   let mtoInterval = mtoInterval1;
  769.  
  770.   function isVideoPlaying(video) {
  771.     return video.currentTime > 0 && !video.paused && !video.ended && video.readyState > video.HAVE_CURRENT_DATA;
  772.   }
  773.  
  774.   function wAttr(elm, attr, kv) {
  775.     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) }
  776.   }
  777.  
  778.   function hideTabBtn(tabBtn) {
  779.     let isActiveBefore = tabBtn.classList.contains('active');
  780.     tabBtn.classList.add("tab-btn-hidden");
  781.     if (isActiveBefore) {
  782.       setToActiveTab();
  783.     }
  784.   }
  785.  
  786.   function hasAttribute(obj, key) {
  787.     return obj && obj.hasAttribute(key);
  788.   }
  789.  
  790.   function isTheater() {
  791.     const cssElm = kRef(ytdFlexy);
  792.     return (cssElm && cssElm.hasAttribute('theater'))
  793.   }
  794.  
  795.   function isFullScreen() {
  796.     const cssElm = kRef(ytdFlexy);
  797.     return (cssElm && cssElm.hasAttribute('fullscreen'))
  798.   }
  799.  
  800.   function isChatExpand() {
  801.     const cssElm = kRef(ytdFlexy);
  802.     return cssElm && cssElm.hasAttribute('userscript-chatblock') && !cssElm.hasAttribute('userscript-chat-collapsed')
  803.   }
  804.  
  805.   function isWideScreenWithTwoColumns() {
  806.     const cssElm = kRef(ytdFlexy);
  807.     return (cssElm && cssElm.hasAttribute('is-two-columns_'))
  808.   }
  809.  
  810.   function isAnyActiveTab() {
  811.     return $('#right-tabs .tab-btn.active').length > 0
  812.   }
  813.  
  814.   function isEngagementPanelExpanded() { //note: not checking the visual elements
  815.     const cssElm = kRef(ytdFlexy);
  816.     return (cssElm && +cssElm.getAttribute('userscript-engagement-panel') > 0)
  817.   }
  818.  
  819.   function engagement_panels_() {
  820.  
  821.     let res = [];
  822.     let shownRes = [];
  823.  
  824.     let v = 0,
  825.       k = 1,
  826.       count = 0;
  827.       
  828.     for (const ePanel of document.querySelectorAll(
  829.       `ytd-watch-flexy ytd-engagement-panel-section-list-renderer[o3r-${sa_epanel}]`
  830.       )) {
  831.  
  832.       let visibility = ePanel.getAttribute('visibility') //ENGAGEMENT_PANEL_VISIBILITY_EXPANDED //ENGAGEMENT_PANEL_VISIBILITY_HIDDEN
  833.  
  834.       switch (visibility) {
  835.         case 'ENGAGEMENT_PANEL_VISIBILITY_EXPANDED':
  836.           v |= k;
  837.           count++;
  838.           shownRes.push(ePanel)
  839.           res.push({ ePanel, k, visible: true });
  840.           break;
  841.         case 'ENGAGEMENT_PANEL_VISIBILITY_HIDDEN':
  842.           res.push({ ePanel, k, visible: false });
  843.           break;
  844.         default:
  845.           res.push({ ePanel, k, visible: false });
  846.       }
  847.  
  848.       k = k << 1;
  849.  
  850.     }
  851.     return { list: res, value: v, count: count, shownRes };
  852.   }
  853.  
  854.  
  855.   function ytBtnOpenEngagementPanel(/** @type {number | string} */ panel_id) {
  856.  
  857.     if (typeof panel_id == 'string') {
  858.       panel_id = panel_id.replace('#engagement-panel-', '');
  859.       panel_id = parseInt(panel_id);
  860.     }
  861.     if (panel_id >= 0) {} else return false;
  862.  
  863.     let panels = engagement_panels_();
  864.  
  865.     for (const { ePanel, k, visible } of panels.list) {
  866.       if ((panel_id & k) === k) {
  867.         if (!visible) ePanel.setAttribute('visibility', "ENGAGEMENT_PANEL_VISIBILITY_EXPANDED");
  868.       } else {
  869.         if (visible) ytBtnCloseEngagementPanel(ePanel);
  870.       }
  871.     }
  872.  
  873.   }
  874.  
  875.   function ytBtnCloseEngagementPanel(/** @type {HTMLElement} */  s) {
  876.     //ePanel.setAttribute('visibility',"ENGAGEMENT_PANEL_VISIBILITY_HIDDEN");
  877.     let btn = querySelectorFromAnchor.call(s,'ytd-watch-flexy ytd-engagement-panel-title-header-renderer #header > #visibility-button > ytd-button-renderer');
  878.     if (btn) {
  879.       btn.click();
  880.     }
  881.   }
  882.  
  883.   function ytBtnCloseEngagementPanels() {
  884.     if (isEngagementPanelExpanded()) {
  885.       for (const s of document.querySelectorAll(
  886.         `ytd-watch-flexy ytd-engagement-panel-section-list-renderer[o3r-${sa_epanel}]`
  887.         )) {
  888.         if (s.getAttribute('visibility') == "ENGAGEMENT_PANEL_VISIBILITY_EXPANDED") ytBtnCloseEngagementPanel(s);
  889.       }
  890.     }
  891.   }
  892.  
  893.   function ytBtnSetTheater() {
  894.     if (!isTheater()) {
  895.       const sizeBtn = document.querySelector('ytd-watch-flexy #ytd-player button.ytp-size-button')
  896.       if (sizeBtn) sizeBtn.click();
  897.     }
  898.   }
  899.  
  900.   function ytBtnCancelTheater() {
  901.     if (isTheater()) {
  902.       const sizeBtn = document.querySelector('ytd-watch-flexy #ytd-player button.ytp-size-button')
  903.       if (sizeBtn) sizeBtn.click();
  904.     }
  905.   }
  906.  
  907.   function ytBtnExpandChat() {
  908.     let button = document.querySelector('ytd-live-chat-frame#chat[collapsed] > .ytd-live-chat-frame#show-hide-button')
  909.     if (button) querySelectorFromAnchor.call(button,'ytd-toggle-button-renderer').click();
  910.   }
  911.  
  912.   function ytBtnCollapseChat() {
  913.     let button = document.querySelector('ytd-live-chat-frame#chat:not([collapsed]) > .ytd-live-chat-frame#show-hide-button')
  914.     if (button) button.querySelector('ytd-toggle-button-renderer').click();
  915.   }
  916.  
  917. /*
  918.   function hackImgShadow(imgShadow) {
  919.     // add to #columns and add back after loaded
  920.     let img = imgShadow.querySelector('img')
  921.     if (!img) return;
  922.  
  923.     let p = imgShadow.parentNode
  924.     let z = $(imgShadow).clone()[0]; //to occupy the space
  925.     p.replaceChild(z, imgShadow)
  926.     $(imgShadow).prependTo('#columns'); // refer to css hack
  927.  
  928.     function onload(evt) {
  929.       if (evt) this.removeEventListener('load', onload, false)
  930.       p.replaceChild(imgShadow, z)
  931.       p = null;
  932.       z = null;
  933.       imgShadow = null;
  934.     }
  935.  
  936.     if (img.complete) onload();
  937.     else img.addEventListener('load', onload, false)
  938.   }
  939.   */
  940.  
  941.  
  942.   const Q = {}
  943.  
  944.  
  945.  
  946.   function chatFrameContentDocument() {
  947.     // non-null if iframe exist && contentDocument && readyState = complete
  948.     /** @type {HTMLIFrameElement | null} */ 
  949.     let iframe = document.querySelector('ytd-live-chat-frame iframe#chatframe');
  950.     if (!iframe) return null; //iframe must be there
  951.     /** @type {Document | null} */ 
  952.     let cDoc = null;
  953.     try {
  954.       cDoc = iframe.contentDocument;
  955.     } catch (e) {}
  956.     if (!cDoc) return null;
  957.     if (cDoc.readyState != 'complete') return null; //we must wait for its completion
  958.  
  959.     return cDoc;
  960.  
  961.   }
  962.  
  963.   function chatFrameElement(/** @type {string} */ cssSelector) {
  964.     let cDoc = chatFrameContentDocument();
  965.     if (!cDoc) return null;
  966.     /** @type {HTMLElement | null} */ 
  967.     let elm = null;
  968.     try {
  969.       elm = cDoc.querySelector(cssSelector)
  970.     } catch (e) {
  971.       console.log('iframe error', e)
  972.     }
  973.     return elm;
  974.   }
  975.  
  976.  
  977.  
  978.  
  979.   function fixTabs() {
  980.  
  981.  
  982.     if (!scriptEnable) return;
  983.  
  984.  
  985.     let queryElement = document.querySelector('*:not(#tab-videos) > #related:not([non-placeholder-videos]) > ytd-watch-next-secondary-results-renderer')
  986.  
  987.     let isRelocated = !!queryElement;
  988.  
  989.  
  990.  
  991.     if (isRelocated) {
  992.  
  993.       let relocatedRelated = queryElement.parentNode; // NOT NULL
  994.  
  995.       let right_tabs = document.querySelector('#right-tabs');
  996.       let tab_videos = querySelectorFromAnchor.call(right_tabs,"#tab-videos");
  997.  
  998.       if (!right_tabs || !tab_videos) return;
  999.  
  1000.       for (const s of querySelectorAllFromAnchor.call(relocatedRelated,'#related')) {
  1001.         s.setAttribute('non-placeholder-videos', '')
  1002.       }
  1003.  
  1004.       let target_container = document.querySelector('ytd-watch-flexy:not([is-two-columns_]) #primary-inner, ytd-watch-flexy[is-two-columns_] #secondary-inner')
  1005.  
  1006.       if (target_container) target_container.append(right_tabs) // last-child
  1007.  
  1008.  
  1009.       let videos_related = relocatedRelated; // NOT NULL
  1010.       $('[placeholder-videos]').removeAttr('placeholder-videos');
  1011.       $('[placeholder-for-youtube-play-next-queue]').removeAttr('placeholder-for-youtube-play-next-queue');
  1012.  
  1013.       tab_videos.appendChild(videos_related);
  1014.       let videos_results_renderer = relocatedRelated.querySelector("ytd-watch-next-secondary-results-renderer");
  1015.       if (videos_results_renderer) videos_results_renderer.setAttribute('data-dom-changed-by-tabview-youtube', scriptVersionForExternal);
  1016.       videos_related.setAttribute('placeholder-for-youtube-play-next-queue', '')
  1017.       videos_related.setAttribute('placeholder-videos', '')
  1018.  
  1019.       $('[placeholder-videos]').on("scroll", makeBodyScrollByEvt);
  1020.  
  1021.  
  1022.  
  1023.  
  1024.     }
  1025.  
  1026.  
  1027.  
  1028.     /** @type {HTMLElement | null} */ 
  1029.     let chatroom = null;
  1030.     if (chatroom = document.querySelector('*:not([data-positioner="before|#chat"]) + ytd-live-chat-frame#chat, ytd-live-chat-frame#chat:first-child')) {
  1031.  
  1032.       let positioner = document.querySelector('tabview-youtube-positioner[data-positioner="before|#chat"]');
  1033.       if (positioner) positioner.remove();
  1034.  
  1035.  
  1036.       if (document.querySelector('.YouTubeLiveFilledUpView')) {
  1037.         // no relocation
  1038.       } else {
  1039.  
  1040.         $(chatroom).insertBefore('#right-tabs')
  1041.  
  1042.       }
  1043.  
  1044.  
  1045.       $(positioner ? positioner : document.createElement('tabview-youtube-positioner')).attr('data-positioner', 'before|#chat').insertBefore(chatroom)
  1046.  
  1047.  
  1048.  
  1049.     }
  1050.  
  1051.  
  1052.   }
  1053.  
  1054.   function handlerAutoCompleteExist() {
  1055.  
  1056.  
  1057.     /** @type {HTMLElement} */ 
  1058.     let autoComplete = this;
  1059.  
  1060.     autoComplete.removeEventListener('autocomplete-sc-exist', handlerAutoCompleteExist, false)
  1061.  
  1062.     let domId = autoComplete.getAttribute('data-autocomplete-input-id')
  1063.     let searchBox = autoComplete.ownerDocument.querySelector(`[data-autocomplete-results-id="${domId}"]`)
  1064.  
  1065.     if (!domId || !searchBox) return;
  1066.  
  1067.     let positioner = searchBox.nextSibling;
  1068.     if (positioner && positioner.nodeName.toLowerCase() == "autocomplete-positioner") {} else if (positioner && positioner.nodeName.toLowerCase() != "autocomplete-positioner") {
  1069.       $(positioner = document.createElement("autocomplete-positioner")).insertAfter(searchBox);
  1070.     } else {
  1071.       $(positioner = document.createElement("autocomplete-positioner")).prependTo(searchBox.parentNode);
  1072.     }
  1073.     $(autoComplete).prependTo(positioner);
  1074.  
  1075.     positioner.style.setProperty('--sb-margin-bottom', getComputedStyle(searchBox).marginBottom)
  1076.     positioner.style.setProperty('--height', searchBox.offsetHeight + 'px')
  1077.  
  1078.   }
  1079.  
  1080.   function mtf_fixAutoCompletePosition(/** @type {HTMLElement} */ elmAutoComplete) {
  1081.  
  1082.  
  1083.     elmAutoComplete.setAttribute('autocomplete-disable-updatesc', '')
  1084.     elmAutoComplete.addEventListener('autocomplete-sc-exist', handlerAutoCompleteExist, false)
  1085.  
  1086.     script_inject_facp.inject();
  1087.  
  1088.   }
  1089.  
  1090.   function mtf_AfterFixTabs() {
  1091.  
  1092.  
  1093.     /** @type {HTMLElement | null} */ 
  1094.     let ytdFlexyElm = kRef(ytdFlexy);
  1095.     if (!scriptEnable || !ytdFlexyElm) return;
  1096.  
  1097.     /** @type {HTMLElement | null} */
  1098.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1099.  
  1100.  
  1101.  
  1102.     const autocomplete = querySelectorFromAnchor.call(rootElement,'[placeholder-for-youtube-play-next-queue] input#suggestions-search + autocomplete-positioner > .autocomplete-suggestions[data-autocomplete-input-id]:not([position-fixed-by-tabview-youtube])')
  1103.  
  1104.     if (autocomplete) {
  1105.  
  1106.       const searchBox = document.querySelector('[placeholder-for-youtube-play-next-queue] input#suggestions-search')
  1107.  
  1108.  
  1109.       if (searchBox) {
  1110.  
  1111.  
  1112.         autocomplete.parentNode.setAttribute('position-fixed-by-tabview-youtube', '');
  1113.         autocomplete.setAttribute('position-fixed-by-tabview-youtube', '');
  1114.         autocomplete.setAttribute('userscript-scrollbar-render', '')
  1115.  
  1116.         if (!searchBox.hasAttribute('is-set-click-to-toggle')) {
  1117.           searchBox.setAttribute('is-set-click-to-toggle', '')
  1118.           searchBox.addEventListener('click', function() {
  1119.  
  1120.  
  1121.             setTimeout(() => {
  1122.               const autocomplete = document.querySelector(`.autocomplete-suggestions[data-autocomplete-input-id="${ this.getAttribute('data-autocomplete-results-id') }"]`)
  1123.  
  1124.               if (!autocomplete) return;
  1125.  
  1126.               const isNotEmpty = (autocomplete.textContent || '').length > 0 && (this.value || '').length > 0;
  1127.  
  1128.               if (isNotEmpty) {
  1129.  
  1130.                 let elmVisible = isDOMVisible(autocomplete)
  1131.  
  1132.                 if (elmVisible) $(autocomplete).hide();
  1133.                 else $(autocomplete).show();
  1134.  
  1135.               }
  1136.  
  1137.             }, 20);
  1138.  
  1139.           })
  1140.  
  1141.           let timeoutOnce_searchbox_keyup = new Timeout();
  1142.           searchBox.addEventListener('keyup', function() {
  1143.  
  1144.             timeoutOnce_searchbox_keyup.set(() => {
  1145.  
  1146.               const autocomplete = document.querySelector(`.autocomplete-suggestions[data-autocomplete-input-id="${ this.getAttribute('data-autocomplete-results-id') }"]`)
  1147.  
  1148.               if (!autocomplete) return;
  1149.  
  1150.  
  1151.               const isNotEmpty = (autocomplete.textContent || '').length > 0 && (this.value || '').length > 0
  1152.  
  1153.               if (isNotEmpty) {
  1154.  
  1155.                 let elmVisible = isDOMVisible(autocomplete)
  1156.  
  1157.                 if (!elmVisible) $(autocomplete).show();
  1158.  
  1159.               }
  1160.  
  1161.             }, 20);
  1162.  
  1163.           })
  1164.  
  1165.         }
  1166.  
  1167.  
  1168.  
  1169.       }
  1170.  
  1171.     }
  1172.  
  1173.  
  1174.  
  1175.  
  1176.     let currentLastVideo = querySelectorFromAnchor.call(rootElement,'[placeholder-videos] #items ytd-compact-video-renderer:last-of-type')
  1177.     let prevLastVideo = kRef(_cachedLastVideo);
  1178.  
  1179.     if (prevLastVideo !== currentLastVideo && currentLastVideo) {
  1180.       _cachedLastVideo = mWeakRef(currentLastVideo);
  1181.     }
  1182.  
  1183.     if (prevLastVideo !== currentLastVideo && currentLastVideo && prevLastVideo) {
  1184.  
  1185.       let isPrevRemoved = !prevLastVideo.parentNode
  1186.  
  1187.  
  1188.       function getVideoListHash() {
  1189.  
  1190.         let res = [...document.querySelectorAll('[placeholder-videos] #items ytd-compact-video-renderer')].map(renderer => {
  1191.           return renderer.querySelector('a[href*="watch"][href*="v="]').getAttribute('href')
  1192.  
  1193.         }).join('|')
  1194.         // /watch?v=XXXXX|/watch?v=XXXXXX|/watch?v=XXXXXX
  1195.  
  1196.         // alternative - DOM.data.videoId
  1197.         // let elms = document.querySelectorAll('[placeholder-videos] #items ytd-compact-video-renderer')
  1198.         // let res = [...elms].map(elm=>elm.data.videoId||'').join('|') ;
  1199.  
  1200.         if (res.indexOf('||') >= 0) {
  1201.           res = '';
  1202.         }
  1203.  
  1204.         return res ? res : null;
  1205.       }
  1206.  
  1207.       if (isPrevRemoved) {
  1208.  
  1209.         // this is the replacement of videos instead of addition
  1210.  
  1211.         const searchBox = document.querySelector('[placeholder-for-youtube-play-next-queue] input#suggestions-search')
  1212.  
  1213.         let currentPlayListHash = getVideoListHash() || null;
  1214.  
  1215.         if (!currentPlayListHash) {
  1216.  
  1217.         } else if (!videoListBeforeSearch && searchBox) {
  1218.  
  1219.           videoListBeforeSearch = currentPlayListHash;
  1220.           if (videoListBeforeSearch) {
  1221.             //console.log('fromSearch', videoListBeforeSearch)
  1222.  
  1223.             requestAnimationFrame(function() {
  1224.  
  1225.               let renderer = document.querySelector('[placeholder-videos] ytd-watch-next-secondary-results-renderer');
  1226.               if (searchBox && searchBox.parentNode) searchBox.blur();
  1227.  
  1228.               if (renderer) {
  1229.                 let scrollParent = renderer.parentNode;
  1230.                 if (scrollParent.scrollHeight > scrollParent.offsetHeight) {
  1231.                   let targetTop = renderer.offsetTop;
  1232.                   if (searchBox && searchBox.parentNode == scrollParent) targetTop -= searchBox.offsetHeight
  1233.                   scrollParent.scrollTop = targetTop - scrollParent.firstChild.offsetTop;
  1234.                 }
  1235.               }
  1236.  
  1237.             });
  1238.  
  1239.           }
  1240.  
  1241.         } else if (videoListBeforeSearch) {
  1242.  
  1243.           if (currentPlayListHash != videoListBeforeSearch) {
  1244.  
  1245.             videoListBeforeSearch = null;
  1246.             //console.log('fromSearch', videoListBeforeSearch)
  1247.  
  1248.  
  1249.           }
  1250.  
  1251.         }
  1252.  
  1253.  
  1254.       }
  1255.  
  1256.  
  1257.     }
  1258.  
  1259.  
  1260.  
  1261.  
  1262.   }
  1263.  
  1264.   function base_ChatExist() {
  1265.  
  1266.     let ytdFlexyElm = kRef(ytdFlexy);
  1267.     if (!scriptEnable || !ytdFlexyElm) return null;
  1268.  
  1269.     // no mutation triggering if the changes are inside the iframe 
  1270.  
  1271.     // 1) Detection of #continuations inside iframe
  1272.     // iframe ownerDocument is accessible due to same origin
  1273.     // if the chatroom is collasped, no determination of live chat or replay (as no #continuations and somehow a blank iframe doc)
  1274.  
  1275.     // 2) Detection of meta tag
  1276.     // This is fastest but not reliable. It is somehow a bug that the navigation might not update the meta tag content
  1277.  
  1278.     // 3) Detection of HTMLElement inside video player for live video
  1279.  
  1280.     // (1)+(3) = solution
  1281.  
  1282.     let attr_chatblock = null
  1283.     let attr_chatcollapsed = null;
  1284.  
  1285.     const elmChat = document.querySelector('ytd-live-chat-frame#chat')
  1286.     let elmCont = null;
  1287.     if (elmChat) {
  1288.       elmCont = chatFrameElement('yt-live-chat-renderer #continuations')
  1289.  
  1290.  
  1291.       let s = 0;
  1292.       if (elmCont) {
  1293.         //not found if it is collasped.
  1294.         s |= querySelectorFromAnchor.call(elmCont,'yt-timed-continuation') ? 1 : 0;
  1295.         s |= querySelectorFromAnchor.call(elmCont,'yt-live-chat-replay-continuation, yt-player-seek-continuation') ? 2 : 0;
  1296.         //s |= elmCont.querySelector('yt-live-chat-restricted-participation-renderer')?4:0;
  1297.         if (s == 1) {
  1298.           attr_chatblock = 'chat-live';
  1299.         }else if (s == 2) attr_chatblock = 'chat-playback';
  1300.  
  1301.         if (s == 1) $("span#tab3-txt-loader").text('');
  1302.  
  1303.       } else if (!ytdFlexyElm.hasAttribute('userscript-chatblock')) {
  1304.         // live chat frame but type not known
  1305.           
  1306.         attr_chatblock = '';
  1307.  
  1308.       }
  1309.       //keep unknown as original    
  1310.       
  1311.       
  1312.       let isCollapsed = !!elmChat.hasAttribute('collapsed');
  1313.       attr_chatcollapsed = isCollapsed;
  1314.  
  1315.     } else {
  1316.       attr_chatblock = false;
  1317.       attr_chatcollapsed = false;
  1318.  
  1319.     }
  1320.  
  1321.     return { attr_chatblock, attr_chatcollapsed }
  1322.  
  1323.   }
  1324.  
  1325.  
  1326.   function mtf_ChatExist() {
  1327.  
  1328.     let ytdFlexyElm = kRef(ytdFlexy);
  1329.     if (!scriptEnable || !ytdFlexyElm) return;
  1330.  
  1331.     if (deferredVarYTDHidden) return;
  1332.  
  1333.     const elmChat = document.querySelector('ytd-live-chat-frame#chat')
  1334.     let elmCont = null;
  1335.     if (elmChat) {
  1336.       elmCont = chatFrameElement('yt-live-chat-renderer #continuations')
  1337.     }
  1338.  
  1339.     const chatBlockR = (elmChat ? 1 : 0) + (elmCont ? 2 : 0)
  1340.     if (Q.mtf_chatBlockQ !== chatBlockR) {
  1341.       Q.mtf_chatBlockQ = chatBlockR
  1342.       let rChatExist = base_ChatExist();
  1343.       //console.log(2446, rChatExist)
  1344.       if (rChatExist) {
  1345.         let { attr_chatblock, attr_chatcollapsed } = rChatExist;
  1346.         wAttr(ytdFlexyElm, 'userscript-chatblock', attr_chatblock)
  1347.         wAttr(ytdFlexyElm, 'userscript-chat-collapsed', attr_chatcollapsed)
  1348.         
  1349.         if(attr_chatblock=='chat-live') _disableComments();
  1350.       }
  1351.     }
  1352.  
  1353.   }
  1354.  
  1355.  
  1356.  
  1357.  
  1358.   let lastScrollAt1 = 0;
  1359.  
  1360.   function makeBodyScrollByEvt() {
  1361.     let ct = Date.now();
  1362.     if (ct - lastScrollAt1 < 6) return; // avoid duplicate calling
  1363.     lastScrollAt1 = ct;
  1364.     window.dispatchEvent(new Event("scroll")); // dispatch Scroll Event to Window for content display
  1365.   }
  1366.  
  1367.   let lastScrollAt2 = 0;
  1368.  
  1369.   function makeBodyScroll() {
  1370.     let ct = Date.now();
  1371.     if (ct - lastScrollAt2 < 30) return; // avoid over triggering
  1372.     lastScrollAt2 = ct;
  1373.     requestAnimationFrame(() => {
  1374.       window.dispatchEvent(new Event("scroll")); // ask youtube to display content
  1375.     })
  1376.   }
  1377.  
  1378.   //let requestingComments = null
  1379.   //let scrollForComments_lastStart = 0;
  1380.    /*
  1381.   function scrollForComments_TF() {
  1382.  
  1383.     let comments = requestingComments;
  1384.     if (!comments) return;
  1385.     if (comments.hasAttribute('hidden')) {
  1386.       window.dispatchEvent(new Event("scroll"));
  1387.     } else requestingComments = null;
  1388.  
  1389.   }
  1390.   function scrollForComments() {
  1391.     scrollForComments_TF();
  1392.     if (!requestingComments) return;
  1393.     requestAnimationFrame(scrollForComments_TF);
  1394.     let ct = Date.now();
  1395.     if (ct - scrollForComments_lastStart < 60) return;
  1396.     scrollForComments_lastStart = ct;
  1397.     timeline.setTimeout(scrollForComments_TF, 80);
  1398.     timeline.setTimeout(scrollForComments_TF, 240);
  1399.     timeline.setTimeout(scrollForComments_TF, 870);
  1400.   
  1401.   }
  1402.   */
  1403.  
  1404.  
  1405.  
  1406.   const mtoCs = { mtoNav: null, mtoBody: null };
  1407.  
  1408.  
  1409.   const mtoVs = {}
  1410.  
  1411.   const mutation_target_id_list = ['ytp-caption-window-container', 'items', 'button', 'movie_player', 'player-ads', 'hover-overlays', 'replies'];
  1412.   const mutation_target_class_list = ['ytp-panel-menu', 'ytp-endscreen-content'];
  1413.  
  1414.   function isMtoOverallSkip(dTarget) {
  1415.  
  1416.     if (!dTarget || dTarget.nodeType !== 1) return true;
  1417.  
  1418.     if (mutation_target_id_list.includes(dTarget.id)) return true;
  1419.  
  1420.     for (const c of dTarget.classList) {
  1421.       if (mutation_target_class_list.includes(c)) return true;
  1422.     }
  1423.  
  1424.     return false;
  1425.   }
  1426.  
  1427.  
  1428.   const mutation_div_id_ignorelist = [
  1429.         'metadata-line',
  1430.         'ytp-caption-window-container',
  1431.         'top-level-buttons-computed',
  1432.         'microformat',
  1433.         'visibility-button',
  1434.         'info-strings',
  1435.         'action-menu',
  1436.         'reply-button-end'
  1437.     ];
  1438.  
  1439.   const mutation_div_class_ignorelist = [
  1440.         'badge', 'tp-yt-paper-tooltip', 'ytp-autonav-endscreen-upnext-header',
  1441.         'ytp-bound-time-left', 'ytp-bound-time-right', 'ytp-share-icon',
  1442.         'ytp-tooltip-title', 'annotation', 'ytp-copylink-icon', 'ytd-thumbnail',
  1443.         'paper-ripple',
  1444.         //caption
  1445.         'captions-text', 'caption-visual-line', 'ytp-caption-segment', 'ytp-caption-window-container',
  1446.         //menu
  1447.         'ytp-playlist-menu-button-text',
  1448.  
  1449.         'ytp-bezel-icon', 'ytp-bezel-text',
  1450.         'dropdown-content',
  1451.         'tp-yt-paper-menu-button', 'tp-yt-iron-dropdown',
  1452.  
  1453.         'ytd-metadata-row-renderer', // #content.ytd-metadata-row-renderer inside each of ytd-metadata-row-renderer (ytd-expander)
  1454.         '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
  1455.  
  1456.         'autocomplete-suggestions' // autocomplete-suggestions
  1457.     ];
  1458.  
  1459.   const mutation_target_tag_ignorelist = [
  1460.         'ytd-channel-name', 'tp-yt-iron-dropdown', 'tp-yt-paper-tooltip',
  1461.         'tp-yt-paper-listbox', 'yt-img-shadow', 'ytd-thumbnail', 'ytd-video-meta-block',
  1462.  
  1463.         'yt-icon-button', 'tp-yt-paper-button', 'yt-formatted-string', 'yt-icon', 'button', 'paper-ripple',
  1464.  
  1465.         'ytd-player-microformat-renderer',
  1466.         'ytd-engagement-panel-section-list-renderer', 'ytd-engagement-panel-title-header-renderer',
  1467.         'ytd-comment-renderer', 'ytd-menu-renderer', 'ytd-badge-supported-renderer',
  1468.         'ytd-subscribe-button-renderer', 'ytd-subscription-notification-toggle-button-renderer',
  1469.         'ytd-button-renderer', 'ytd-toggle-button-renderer',
  1470.         'yt-pdg-comment-chip-renderer', 'ytd-comment-action-buttons-renderer', 'ytd-comment-thread-renderer',
  1471.         'ytd-compact-radio-renderer', 'ytd-compact-video-renderer',
  1472.         'ytd-video-owner-renderer',
  1473.         'ytd-metadata-row-renderer', //ytd-metadata-row-renderer is part of the #collapsible inside ytd-expander
  1474.  
  1475.         'ytd-moving-thumbnail-renderer',
  1476.         'ytd-thumbnail-overlay-toggle-button-renderer',
  1477.         'ytd-thumbnail-overlay-bottom-panel-renderer', 'ytd-thumbnail-overlay-equalizer',
  1478.         'ytd-thumbnail-overlay-now-playing-renderer', 'ytd-thumbnail-overlay-resume-playback-renderer',
  1479.         'ytd-thumbnail-overlay-side-panel-renderer', 'ytd-thumbnail-overlay-time-status-renderer',
  1480.         'ytd-thumbnail-overlay-hover-text-renderer',
  1481.  
  1482.         'yt-interaction',
  1483.         'tp-yt-paper-spinner-lite', 'tp-yt-paper-spinner',
  1484.  
  1485.         'h1', 'h2', 'h3', 'h4', 'h5', 'span', 'a',
  1486.  
  1487.         'meta', 'br', 'script', 'style', 'link', 'dom-module', 'template'
  1488.     ];
  1489.  
  1490.   function isMtoTargetSkip(mutation) {
  1491.     //skip not important mutation tartget
  1492.  
  1493.     if (!mutation) return true;
  1494.     let { type, target } = mutation
  1495.  
  1496.     if (!target || target.nodeType !== 1 || type != 'childList') return true;
  1497.  
  1498.     let tagName = target.nodeName.toLowerCase();
  1499.  
  1500.     if (mutation_target_tag_ignorelist.includes(tagName)) return true;
  1501.  
  1502.     switch (tagName) {
  1503.  
  1504.  
  1505.       case 'ytd-expander':
  1506.         if (target.id == 'expander' && Q.comments_section_loaded == 1 && target.classList.contains('ytd-comment-renderer')) return true; // load comments
  1507.         return false;
  1508.  
  1509.       case 'div':
  1510.  
  1511.         if (target.id == 'contents') {
  1512.           return false;
  1513.         }
  1514.         if (mutation_div_id_ignorelist.includes(target.id)) return true;
  1515.  
  1516.         for (const c of target.classList) {
  1517.           if (mutation_div_class_ignorelist.includes(c)) return true;
  1518.         }
  1519.  
  1520.         return false;
  1521.  
  1522.     }
  1523.  
  1524.     return false;
  1525.  
  1526.   }
  1527.  
  1528.  
  1529.   function mtf_forceCheckLiveVideo() {
  1530.     // once per $$player-playback-timestamp$$ {#ytd-player .ytp-time-display} &&  $$chat-frame$$ {ytd-live-chat-frame#chat} detection
  1531.     // reset after popstatechange / videochange
  1532.  
  1533.     if(mtf_forceCheckLiveVideo_disable) return ;
  1534.  
  1535.     let ytdFlexyElm = kRef(ytdFlexy);
  1536.     if (!scriptEnable || !ytdFlexyElm) return ;
  1537.  
  1538.     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')
  1539.     if (!playerLabel) return ;
  1540.     mtf_forceCheckLiveVideo_disable = 1;
  1541.     timeline.setTimeout(FP.fireOnce_forceCheckLiveVideo_tf, 170)
  1542.     return ;
  1543.   }
  1544.  
  1545.   // continuous check for element relocation
  1546.   function mtf_append_comments() {
  1547.     
  1548.     /** @type {HTMLElement | null} */
  1549.     let ytdFlexyElm = kRef(ytdFlexy);
  1550.     if (!scriptEnable || !ytdFlexyElm) return;
  1551.  
  1552.     /** @type {HTMLElement | null} */
  1553.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1554.  
  1555.     let comments = querySelectorFromAnchor.call(rootElement,'#primary ytd-watch-metadata ~ ytd-comments#comments');
  1556.     if (comments) $(comments).appendTo('#tab-comments').attr('data-dom-changed-by-tabview-youtube', scriptVersionForExternal)
  1557.   }
  1558.  
  1559.   // continuous check for element relocation
  1560.   function mtf_liveChatBtnF() {
  1561.     
  1562.     /** @type {HTMLElement | null} */
  1563.     let ytdFlexyElm = kRef(ytdFlexy);
  1564.     if (!scriptEnable || !ytdFlexyElm) return;
  1565.  
  1566.     /** @type {HTMLElement | null} */
  1567.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1568.  
  1569.     let button = querySelectorFromAnchor.call(rootElement,'ytd-live-chat-frame#chat > .ytd-live-chat-frame#show-hide-button:nth-child(n+2)');
  1570.     if (button) button.parentNode.insertBefore(button, button.parentNode.firstChild)
  1571.   }
  1572.  
  1573.  
  1574.  
  1575.   // continuous check for element relocation
  1576.   // fired at begining & window resize, etc
  1577.   function mtf_append_playlist() {
  1578.  
  1579.     /** @type {HTMLElement | null} */
  1580.     let ytdFlexyElm = kRef(ytdFlexy);
  1581.     if (!scriptEnable || !ytdFlexyElm) return;
  1582.  
  1583.     /** @type {HTMLElement | null} */
  1584.     const rootElement = Q.mutationTarget || ytdFlexyElm;
  1585.  
  1586.     let ple1 = querySelectorFromAnchor.call(rootElement,"*:not(#ytd-userscript-playlist) > ytd-playlist-panel-renderer#playlist");
  1587.     if (ple1) {
  1588.       let ct = Date.now();
  1589.       let truePlaylist = null;
  1590.       let truePlaylist_items = document.querySelector('ytd-playlist-panel-renderer#playlist #items:not(:empty)');
  1591.       if (truePlaylist_items) {
  1592.  
  1593.         let pElm = truePlaylist_items.parentNode;
  1594.         while (pElm && pElm.nodeType === 1) {
  1595.           if (pElm.id == 'playlist') {
  1596.             pElm.setAttribute('tabview-true-playlist', ct)
  1597.             truePlaylist = pElm;
  1598.             break;
  1599.           }
  1600.           pElm = pElm.parentNode;
  1601.         }
  1602.  
  1603.       }
  1604.  
  1605.       if (!truePlaylist) truePlaylist = ple1; // NOT NULL
  1606.  
  1607.       for (const s of document.querySelectorAll(`*:not(#ytd-userscript-playlist) > ytd-playlist-panel-renderer#playlist:not([tabview-true-playlist="${ct}"])`))
  1608.         s.parentNode.removeChild(s);
  1609.  
  1610.       let $wrapper = getWrapper('ytd-userscript-playlist')
  1611.       $wrapper.append(truePlaylist).appendTo(document.querySelector("#tab-list"));
  1612.       truePlaylist.setAttribute('data-dom-changed-by-tabview-youtube', scriptVersionForExternal)
  1613.       setDisplayedPlaylist(); // relocation after re-layout
  1614.  
  1615.       requestAnimationFrame(() => {
  1616.         let ytdFlexyElm = kRef(ytdFlexy);
  1617.         if (!scriptEnable || !ytdFlexyElm) return;
  1618.         if (!switchTabActivity_lastTab && (ytdFlexyElm.getAttribute('tabview-selection') + '').indexOf('#tab-') === 0 && /https\:\/\/www\.youtube\.com\/watch.*[\?\&]list=[\w\-\_]+/.test(location.href)) {
  1619.           if (setToActiveTab('#tab-list')) switchTabActivity_lastTab = '#tab-list';
  1620.         }
  1621.       })
  1622.  
  1623.     }
  1624.   }
  1625.  
  1626.  
  1627.   // content fix - info & playlist
  1628.   // fired at begining, and keep for in case any change
  1629.   function mtf_fix_details() {
  1630.  
  1631.     if (!scriptEnable) return;
  1632.  
  1633.     if (no_fix_contents_until < Date.now()) {
  1634.       if (document.querySelector('#tab-info ytd-expander > #content')) {
  1635.         no_fix_contents_until = Date.now() + 3000;
  1636.         timeline.setTimeout(function() {
  1637.           const expander = document.querySelector('ytd-watch-flexy #tab-info ytd-expander');
  1638.           if(!expander || expander.nodeType!==1) return;
  1639.           if(expander.style.getPropertyValue('--ytd-expander-collapsed-height')){
  1640.               expander.style.setProperty('--ytd-expander-collapsed-height','')
  1641.           }else{
  1642.  
  1643.               if (expander.hasAttribute('collapsed')) wAttr(expander, 'collapsed', false);
  1644.               expander.style.setProperty('--ytd-expander-collapsed-height', '');
  1645.  
  1646.               let btn1 = querySelectorFromAnchor.call(expander,'tp-yt-paper-button#less:not([hidden])');
  1647.               let btn2 = querySelectorFromAnchor.call(expander,'tp-yt-paper-button#more:not([hidden])');
  1648.  
  1649.               if (btn1) wAttr(btn1, 'hidden', true);
  1650.               if (btn2) wAttr(btn2, 'hidden', true);
  1651.           }
  1652.         }, 40);
  1653.  
  1654.       }
  1655.     }
  1656.  
  1657.     if (no_fix_playlist_until < Date.now()) {
  1658.       // just in case the playlist is collapsed
  1659.       const playlist = document.querySelector('#tab-list ytd-playlist-panel-renderer#playlist')
  1660.       if (playlist) {
  1661.         no_fix_playlist_until = Date.now() + 3000;
  1662.         timeline.setTimeout(function() {
  1663.           if (playlist.hasAttribute('collapsed')) wAttr(playlist, 'collapsed', false);
  1664.           if (playlist.hasAttribute('collapsible')) wAttr(playlist, 'collapsible', false);
  1665.         }, 40)
  1666.       }
  1667.     }
  1668.  
  1669.  
  1670.   }
  1671.  
  1672.  
  1673.  
  1674.   function isNullComments() {
  1675.  
  1676.     let comments = document.querySelector('ytd-comments#comments')
  1677.     if (!comments || comments.hasAttribute('hidden')) return true;
  1678.  
  1679.   }
  1680.  
  1681.   function _innerCommentsLoader( /** @type {HTMLElement} */ rootElement) {
  1682.  
  1683.     /** @type {HTMLElement | null} */
  1684.     let ytdFlexyElm = kRef(ytdFlexy);
  1685.     if (!scriptEnable || !ytdFlexyElm) return;
  1686.     
  1687.     if (deferredVarYTDHidden) return;
  1688.  
  1689.  
  1690.     let messageElm, messageStr, commentRenderer;
  1691.     let diffCSS = `[tabview-cache-time="${sect_hTime}"]`
  1692.  
  1693.     if (commentRenderer = querySelectorFromAnchor.call(rootElement,`ytd-comments#comments #count.ytd-comments-header-renderer:not(${diffCSS})`)) {
  1694.  
  1695.       scheduledCommentRefresh=false;
  1696.       let eTime = Date.now();
  1697.  
  1698.       sect_holder = mWeakRef(commentRenderer);
  1699.       sect_hText = commentRenderer.textContent;
  1700.       sect_hTime = eTime;
  1701.       commentRenderer.setAttribute('tabview-cache-time', eTime);
  1702.  
  1703.       return {
  1704.         status: 1,
  1705.         f: () => {
  1706.  
  1707.           let span = document.querySelector("span#tab3-txt-loader")
  1708.           let r = '0';
  1709.           let txt = commentRenderer.textContent
  1710.           if (typeof txt == 'string') {
  1711.             let m = txt.match(/[\d\,\s]+/)
  1712.             if (m) {
  1713.               r = m[0].trim()
  1714.  
  1715.  
  1716.             }
  1717.           }
  1718.           
  1719.           if (span){
  1720.  
  1721.             let tab_btn = span.closest('.tab-btn[userscript-tab-content="#tab-comments"]')
  1722.             if(tab_btn)tab_btn.setAttribute('loaded-comment','normal')
  1723.             span.textContent = r;
  1724.           } 
  1725.           //console.log(754)
  1726.           mtoInterval = mtoInterval2;
  1727.           scheduledCommentRefresh=false;
  1728.           setCommentSection(1);
  1729.           comments_section_loaded_elm = mWeakRef(document.querySelector('ytd-comments#comments div#contents'))
  1730.         }
  1731.       }
  1732.  
  1733.     } else if ((messageElm = querySelectorFromAnchor.call(rootElement,`ytd-item-section-renderer#sections #header ~ #contents > ytd-message-renderer:not(${diffCSS})`)) && (messageStr = (messageElm.textContent || '').trim())) { //ytd-message-renderer
  1734.       // it is possible to get the message before the header generation.
  1735.       // sample link - https://www.youtube.com/watch?v=PVUZ8Nvr1ic
  1736.       // sample link - https://www.youtube.com/watch?v=yz8AiQc1Bk8
  1737.  
  1738.       scheduledCommentRefresh=false;
  1739.       let eTime = Date.now();
  1740.  
  1741.       sect_holder = mWeakRef(messageElm);
  1742.       sect_hText = messageElm.textContent;
  1743.       sect_hTime = eTime;
  1744.       messageElm.setAttribute('tabview-cache-time', eTime);
  1745.  
  1746.       return {
  1747.         status: 2,
  1748.         f: () => {
  1749.           timeline.setTimeout(function() {
  1750.             let span = document.querySelector("span#tab3-txt-loader")
  1751.             const mainMsg = querySelectorFromAnchor.call(messageElm,'#message, #submessage')
  1752.             if (mainMsg && mainMsg.textContent) {
  1753.               for (const msg of querySelectorAllFromAnchor.call(mainMsg,'*:not(:empty)')) {
  1754.                 if (msg.childElementCount === 0 && msg.textContent) {
  1755.                   messageStr = msg.textContent.trim()
  1756.                   break
  1757.                 }
  1758.               }
  1759.             }
  1760.             if (span){
  1761.               let tab_btn = span.closest('.tab-btn[userscript-tab-content="#tab-comments"]')
  1762.               if(tab_btn)tab_btn.setAttribute('loaded-comment','message')
  1763.               span.textContent ='\u200B';
  1764.             } 
  1765.             mtoInterval = mtoInterval2;
  1766.             scheduledCommentRefresh=false;
  1767.             setCommentSection(1);
  1768.             comments_section_loaded_elm = mWeakRef(document.querySelector('ytd-comments#comments div#contents'))
  1769.           }, 40);
  1770.         }
  1771.       }
  1772.  
  1773.     }
  1774.  
  1775.   }
  1776.  
  1777.   const atChange = async ()=>{
  1778.  
  1779.     // call when video change / popstate change / switch back from mini-view
  1780.  
  1781.     let ytdFlexyElm = kRef(ytdFlexy);
  1782.     if(!ytdFlexyElm) return;
  1783.  
  1784.     mtf_forceCheckLiveVideo_disable = 0; 
  1785.     mtf_forceCheckLiveVideo();
  1786.  
  1787.     if(Q.comments_section_loaded===0){
  1788.  
  1789.       const tabBtn = document.querySelector('[userscript-tab-content="#tab-comments"].tab-btn-hidden')
  1790.       if(tabBtn) {
  1791.         tabBtn.classList.remove("tab-btn-hidden") //if contains
  1792.       }
  1793.  
  1794.     }
  1795.   }
  1796.  
  1797.  
  1798.  
  1799.   function hookSection(){
  1800.  
  1801.  
  1802.     //console.log(3300)
  1803.  
  1804.     let ytdFlexyElm = kRef(ytdFlexy);
  1805.     if (!scriptEnable || !ytdFlexyElm) return ;
  1806.  
  1807.     const comments = querySelectorFromAnchor.call(ytdFlexyElm,'ytd-comments#comments')
  1808.     if (!comments) return ;
  1809.  
  1810.     if(deferredVarYTDHidden) return;
  1811.  
  1812.     //console.log(3310)
  1813.  
  1814.     //new MutationObserver(function(){console.log(comments.querySelectorAll('*').length)}).observe(comments,{ attributes: true, childList: true, subtree: true })
  1815.     
  1816.  
  1817.     function foundSection(sections){
  1818.  
  1819.       
  1820.       //console.log(3320)
  1821.  
  1822.       function ulfx() {
  1823.         //console.log(1220)
  1824.  
  1825.  
  1826.         const rootElement = comments.parentNode
  1827.  
  1828.  
  1829.         if (pendingOne && querySelectorAllFromAnchor.call(comments,'[tabview-cache-time]').length > 1) return;
  1830.         pendingOne = false;
  1831.         if(!rootElement) return; //prevent unknown condition
  1832.         
  1833.  
  1834.  
  1835.         let innerCommentsLoaderRet = _innerCommentsLoader(rootElement);
  1836.  
  1837.         //console.log(1222,_innerCommentsLoader)
  1838.  
  1839.         if (!innerCommentsLoaderRet) {
  1840.  
  1841.  
  1842.           let holder = kRef(sect_holder);
  1843.           if (holder && comments.contains(holder)) {
  1844.  
  1845.             if (sect_lastUpdate) return;
  1846.             sect_lastUpdate = 1;
  1847.  
  1848.             timeline.setTimeout(function() {
  1849.               //console.log(2633)
  1850.               if (holder.textContent !== sect_hText && sect_hTime > 0) {
  1851.  
  1852.                 if (querySelectorAllFromAnchor.call(comments,'[tabview-cache-time]').length === 1) {
  1853.  
  1854.                   sect_hTime--;
  1855.  
  1856.                   let innerCommentsLoaderRet = _innerCommentsLoader(rootElement);
  1857.  
  1858.                   if (innerCommentsLoaderRet) {
  1859.                     //console.log(9442)
  1860.                     innerCommentsLoaderRet.f();
  1861.                     fetchCommentsFinished();
  1862.                   }
  1863.  
  1864.                   pendingOne = false;
  1865.  
  1866.                 }
  1867.  
  1868.  
  1869.               }
  1870.               sect_lastUpdate = 0
  1871.             }, 400)
  1872.  
  1873.           } else if (sect_holder) {
  1874.             sect_holder = null
  1875.             sect_hTime = 0;
  1876.             sect_lastUpdate = 0;
  1877.             pendingOne = false;
  1878.             timeline.setTimeout(()=>{
  1879.               if(!deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0 && comments.hasAttribute('hidden')){
  1880.  
  1881.                 scheduledCommentRefresh=false; // logic tbc
  1882.                 resetCommentSection();
  1883.                 
  1884.               }
  1885.             },142);
  1886.             
  1887.             Q.mutationTarget=null;
  1888.             FP.mtf_attrComments(); // in case for popstate
  1889.           }
  1890.  
  1891.  
  1892.         } else {
  1893.  
  1894.           //console.log(9443)
  1895.           innerCommentsLoaderRet.f();
  1896.           fetchCommentsFinished();
  1897.  
  1898.           pendingOne = true;
  1899.  
  1900.         }
  1901.  
  1902.  
  1903.  
  1904.       }
  1905.  
  1906.       function observerHook(mutationsList, observer){
  1907.  
  1908.         let valid = false
  1909.         for (const mutation of mutationsList) {
  1910.  
  1911.           let target = mutation.target;
  1912.           if (!target) break;
  1913.           if (!target.id) break;
  1914.           let classList = target.classList;
  1915.  
  1916.  
  1917.           if (
  1918.             classList.contains('ytd-item-section-renderer') ||
  1919.             classList.contains('ytd-comments-header-renderer') ||
  1920.             classList.contains('ytd-message-renderer')) {
  1921.             valid = true
  1922.             break;
  1923.           }
  1924.  
  1925.           break; // only outest mutation
  1926.  
  1927.  
  1928.         }
  1929.         if (valid) ulfx();
  1930.       }
  1931.  
  1932.       
  1933.       if(sections.hasAttribute('tabview-comment-section-checked')){
  1934.  
  1935.         //console.log(3612)
  1936.         ulfx();
  1937.         
  1938.  
  1939.       }else{
  1940.  
  1941.         pendingOne = false;
  1942.         //console.log(3611)
  1943.         const observer = new MutationObserver(observerHook)
  1944.         sections.setAttribute('tabview-comment-section-checked','')
  1945.         const config = { childList: true, subtree: true }; 
  1946.         observer.observe(sections, config);
  1947.         ulfx();
  1948.  
  1949.  
  1950.       }
  1951.  
  1952.  
  1953.  
  1954.     }
  1955.     //console.log(3241, location.href)
  1956.     
  1957.     let cid_render_section = timeline.setInterval(function() {
  1958.  
  1959.      // console.log(3244, location.href)
  1960.  
  1961.  
  1962.       const rootElement = comments.parentNode
  1963.  
  1964.       let sections = querySelectorFromAnchor.call(rootElement,'ytd-comments#comments > ytd-item-section-renderer#sections');
  1965.  
  1966.  
  1967.       if (sections) {
  1968.  
  1969.         timeline.clearInterval(cid_render_section);
  1970.         foundSection(sections);
  1971.  
  1972.       }
  1973.  
  1974.     }, 30)
  1975.  
  1976.  
  1977.  
  1978.   }
  1979.  
  1980.  
  1981.   let mtc_store=0;
  1982.   let mtc_cid = 0;
  1983.   const cssOnceFunc = {
  1984.     [`ytd-comments#comments:not([o3r-${sa_comments}])`]:(comments)=>{
  1985.       
  1986.       // once per {ytd-comments#comments} detection
  1987.  
  1988.       let ytdFlexyElm = kRef(ytdFlexy);
  1989.       if (!scriptEnable || !ytdFlexyElm) return;
  1990.  
  1991.       if (!comments) return;
  1992.  
  1993.  
  1994.  
  1995.  
  1996.       if(mtoVisibility_Comments.bindElement(comments)){
  1997.         mtoVisibility_Comments.observer.check(9);
  1998.       }
  1999.       
  2000.       pageInit_attrComments = true
  2001.       hookSection();
  2002.  
  2003.       //let dComments = comments
  2004.       //timeline.setTimeout(() => nativeFunc(dComments, "loadComments"), 20)
  2005.       //comments = null;
  2006.  
  2007.     },
  2008.     [`ytd-playlist-panel-renderer#playlist:not([o3r-${sa_playlist}])`]:(playlist)=>{
  2009.  
  2010.         // once per {ytd-playlist-panel-renderer#playlist} detection
  2011.  
  2012.         let ytdFlexyElm = kRef(ytdFlexy);
  2013.         if (!scriptEnable || !ytdFlexyElm) return;
  2014.  
  2015.         if (!playlist) return;
  2016.  
  2017.         if(mtoVisibility_Playlist.bindElement(playlist)){
  2018.           mtoVisibility_Playlist.observer.check(9)  //delay check required for browser bug - hidden changed not triggered 
  2019.         }
  2020.         playlist = null;
  2021.  
  2022.         return;
  2023.  
  2024.     },
  2025.     '#meta-contents ytd-expander:not([tabview-info-expander])':(expander)=>{
  2026.  
  2027.         // once per $$native-info-description$$ {#meta-contents ytd-expander} detection
  2028.  
  2029.         let ytdFlexyElm = kRef(ytdFlexy);
  2030.         if (!scriptEnable || !ytdFlexyElm) return ;
  2031.  
  2032.         if (!expander) return ;
  2033.         expander.setAttribute('tabview-info-expander','')
  2034.         $(expander).appendTo("#tab-info").attr('data-dom-changed-by-tabview-youtube', scriptVersionForExternal)
  2035.   
  2036.   
  2037.  
  2038.     },
  2039.     '#description-and-actions.style-scope.ytd-watch-metadata > #description ytd-text-inline-expander:not([tabview-removed-duplicate])': (teaserInfo)=>{
  2040.  
  2041.  
  2042.       // for Teaser UI
  2043.       // once per {#description-and-actions.style-scope.ytd-watch-metadata > #description > ytd-text-inline-expander} detection
  2044.  
  2045.       let ytdFlexyElm = kRef(ytdFlexy);
  2046.       if (!scriptEnable || !ytdFlexyElm) return ;
  2047.       let addedInfo = document.querySelector('#tab-info ytd-expander[tabview-info-expander]');
  2048.  
  2049.       if(!addedInfo) return;
  2050.  
  2051.       if(!document.documentElement.hasAttribute('tabview-injection-js-1-ready')) return;
  2052.  
  2053.       teaserInfo.setAttribute('tabview-removed-duplicate','')
  2054.  
  2055.  
  2056.       teaserInfo.dispatchEvent(new CustomEvent('tabview-no-duplicate-info'))
  2057.       //console.log(56)
  2058.  
  2059.     }
  2060.   }
  2061.   const cssOnce = Object.keys(cssOnceFunc).join(', ')
  2062.  
  2063.   const regularCheck = (addP, removeP, mutationTarget)=>{
  2064.  
  2065.  
  2066.     let isInvalidAdding = mutationTarget && !mutationTarget.parentNode
  2067.  
  2068.       
  2069.     let promisesForAddition = !scriptEnable ? [] : addP > 0 && !isInvalidAdding ? [
  2070.  
  2071.         (async () => {
  2072.  
  2073.           
  2074.           //$callOnce('mtf_checkFlexy');
  2075.  
  2076.           const rootElement = Q.mutationTarget || kRef(ytdFlexy);
  2077.  
  2078.           if(rootElement){
  2079.  
  2080.             let fElms = querySelectorAllFromAnchor.call(rootElement,cssOnce)
  2081.             if(fElms.length>0){
  2082.  
  2083.               for(const fElm of fElms){
  2084.                 for(let cssSelctor in cssOnceFunc){
  2085.                   if(fElm.matches(cssSelctor)){
  2086.                     let f= cssOnceFunc[cssSelctor]
  2087.                     if(typeof f=='function') f(fElm);
  2088.                     break;
  2089.                   }
  2090.  
  2091.                 }
  2092.               }
  2093.  
  2094.               //$callOnce('mtf_initalAttr_comments');
  2095.               //$callOnce('mtf_initalAttr_playlist');
  2096.               // $callOnce('mtf_checkDescriptionLoaded');
  2097.             }
  2098.  
  2099.           }
  2100.  
  2101.         })(),
  2102.     
  2103.         (async () => {
  2104.  
  2105.  
  2106.           FP.mtf_initalAttr_chatroom();
  2107.           FP.mtf_initalAttr_engagement_panel();
  2108.           
  2109.           //$callOnce('mtf_initalAttr_chatroom');
  2110.          // $callOnce('mtf_initalAttr_engagement_panel');
  2111.  
  2112.           mtf_forceCheckLiveVideo();
  2113.             mtf_append_comments();
  2114.             mtf_liveChatBtnF();
  2115.             fixTabs();
  2116.             mtf_AfterFixTabs();
  2117.             mtf_append_playlist();
  2118.  
  2119.         })()
  2120.  
  2121.     ] : [];
  2122.     
  2123.   
  2124.     
  2125.     let promisesForEveryMutation = !scriptEnable ? [] : [
  2126.         (async () => {
  2127.             mtf_fix_details();
  2128.             mtf_ChatExist();
  2129.         })()
  2130.     ];
  2131.  
  2132.     return [...promisesForAddition, ...promisesForEveryMutation]
  2133.  
  2134.  
  2135.   }
  2136.  
  2137.   function setOnlyOneEPanel(ePanel){
  2138.  
  2139.     layoutStatusMutex.lockWith(unlock => {
  2140.  
  2141.       let cPanels = engagement_panels_();
  2142.       for (const entry of cPanels.list) {
  2143.         if (entry.ePanel != ePanel && entry.visible) ytBtnCloseEngagementPanel(entry.ePanel);
  2144.       }
  2145.       setTimeout(unlock, 30)
  2146.  
  2147.     })
  2148.  
  2149.   }
  2150.  
  2151.   const FP = {
  2152.  
  2153.     mtoNav_delayedF: () => {
  2154.  
  2155.       let { addP, removeP, mutationTarget } = Q;
  2156.  
  2157.       Q.addP = 0;
  2158.       Q.removeP = 0;
  2159.       
  2160.       mtc_store=Date.now()+1870
  2161.  
  2162.  
  2163.       let regularChecks = regularCheck(addP, removeP, mutationTarget);
  2164.  
  2165.       Promise.all(regularChecks).then(() => {
  2166.         regularChecks = null;
  2167.         
  2168.         mtc_store= Date.now() + 3870 // pending Comments start to load
  2169.         
  2170.         Q.mutationTarget = null;
  2171.  
  2172.         Q.mtoNav_requestNo--;
  2173.         //console.log('motnav reduced to', mtoNav_requestNo)
  2174.         if (Q.mtoNav_requestNo > 0) {
  2175.           Q.mtoNav_requestNo = 1;
  2176.           setTimeout(FP.mtoNav_delayedF, mtoInterval);
  2177.         }
  2178.       })
  2179.  
  2180.  
  2181.     },
  2182.  
  2183.     mtoNavF: ( /** @type {MutationRecord[]} */ mutations,  /** @type {MutationObserver} */   observer) => {
  2184.       //subtree DOM mutation checker - {ytd-watch-flexy} \single \subtree
  2185.  
  2186.       newVideoPageCheck()
  2187.  
  2188.       if (!scriptEnable) return;
  2189.       if (deferredVarYTDHidden) return;
  2190.  
  2191.       let ch = false;
  2192.  
  2193.       let reg = [];
  2194.       let dTarget = null;
  2195.  
  2196.       let wAddP = 0,
  2197.         wRemoveP = 0;
  2198.  
  2199.       let _last_mto_target = null;
  2200.       let _last_mto_target_valid = null;
  2201.  
  2202.       for (const mutation of mutations) {
  2203.         if (!mutation || !mutation.target || !mutation.target.parentNode) continue;
  2204.  
  2205.         let elementalMutation = false;
  2206.         let tAddP = 0,
  2207.           tRemoveP = 0;
  2208.  
  2209.         for (const addedNode of mutation.addedNodes) { //theoretically faster: only reading of states
  2210.           if (addedNode.nodeType === 1) {
  2211.             tAddP++;
  2212.             elementalMutation = true;
  2213.           }
  2214.         }
  2215.  
  2216.         for (const removedNode of mutation.removedNodes) { //theoretically faster: only reading of states
  2217.           if (removedNode.nodeType === 1) {
  2218.             tRemoveP++;
  2219.             elementalMutation = true;
  2220.           }
  2221.         }
  2222.  
  2223.         if (elementalMutation) { //skip all addition and removal operations without elemental changes (e.g. textNode modification)
  2224.  
  2225.           if (_last_mto_target === mutation.target) {
  2226.             // due to addition and removal operations to the same DOM
  2227.             if (_last_mto_target_valid) {
  2228.               // AddP & RemoveP is still valid
  2229.               wAddP += tAddP;
  2230.               wRemoveP += tRemoveP;
  2231.             }
  2232.             continue;
  2233.           }
  2234.           _last_mto_target = mutation.target;
  2235.  
  2236.           if (isMtoTargetSkip(mutation)) {
  2237.             _last_mto_target_valid = false;
  2238.             continue; //theoretically slower: creation of string variables
  2239.           } else {
  2240.             _last_mto_target_valid = true;
  2241.             wAddP += tAddP;
  2242.             wRemoveP += tRemoveP;
  2243.           }
  2244.  
  2245.  
  2246.  
  2247.           ch = true;
  2248.  
  2249.           reg.push(mutation);
  2250.  
  2251.           if (dTarget === null) dTarget = mutation.target; //first
  2252.           else if (dTarget === true) {} //ytdFlexy
  2253.           else if (dTarget.contains(mutation.target)) {} //first node is the container to all subsequential targets
  2254.           else { dTarget = true; } //the target is not the child of first node
  2255.  
  2256.         }
  2257.  
  2258.       }
  2259.  
  2260.       if (!ch) return; // dTarget must be true OR HTMLElement
  2261.  
  2262.       if (dTarget === true) dTarget = kRef(ytdFlexy); // major mutation occurance
  2263.       else if (dTarget === kRef(comments_section_loaded_elm) && wAddP > wRemoveP) return true; // ignore if comments are loaded (adding comments)
  2264.       else if (isMtoOverallSkip(dTarget)) return; // allow for multiple mutations at the same time - determinated after looping
  2265.  
  2266.  
  2267.  
  2268.       // 4 ~ 16 times per full page loading
  2269.  
  2270.       Q.addP += wAddP;
  2271.       Q.removeP += wRemoveP;
  2272.  
  2273.       if (Q.mutationTarget === null) Q.mutationTarget = dTarget;
  2274.       else if (Q.mutationTarget != dTarget) Q.mutationTarget = kRef(ytdFlexy);
  2275.  
  2276.       //console.log(prettyElm(dTarget), wAddP , wRemoveP, mtoInterval)
  2277.       //console.log(prettyElm(dTarget), reg.map(m=>prettyElm(m.target)))
  2278.       //console.log(7015, performance.now())
  2279.  
  2280.  
  2281.  
  2282.       Q.mtoNav_requestNo++;
  2283.       if (Q.mtoNav_requestNo == 1) setTimeout(FP.mtoNav_delayedF, mtoInterval);
  2284.  
  2285.     },
  2286.  
  2287.  
  2288.     mtoBodyF: ( /** @type {MutationRecord[]} */ mutations,  /** @type {MutationObserver} */   observer) => {
  2289.       //subtree DOM mutation checker - {body} \single \subtree
  2290.  
  2291.       if (!scriptEnable) return;
  2292.       if (deferredVarYTDHidden) return;
  2293.  
  2294.       for (const mutation of mutations) {
  2295.         for (const addedNode of mutation.addedNodes)
  2296.           if (addedNode.nodeType === 1) {
  2297.             if (addedNode.nodeName == "DIV" && addedNode.matches('.autocomplete-suggestion:not([autocomplete-disable-updatesc])') ) {
  2298.               mtf_fixAutoCompletePosition(addedNode)
  2299.             }else if(addedNode.nodeName == "DIV" && (addedNode.id==='lyricscontainer' || addedNode.id==='showlyricsbutton')){
  2300.  
  2301.               goYoutubeGeniusLyrics();
  2302.  
  2303.             }
  2304.           }
  2305.       }
  2306.  
  2307.     },
  2308.  
  2309.     mtf_attrPlaylist: (attrName, newValue) => {
  2310.       //attr mutation checker - {ytd-playlist-panel-renderer#playlist} \single
  2311.       //::attr ~ hidden    
  2312.       //console.log(1210)
  2313.  
  2314.       if (!scriptEnable) return;
  2315.       if (deferredVarYTDHidden) return;
  2316.       let cssElm = kRef(ytdFlexy);
  2317.       if (!cssElm) return;
  2318.  
  2319.       let playlist = document.querySelector('ytd-playlist-panel-renderer#playlist')
  2320.       const tabBtn = document.querySelector('[userscript-tab-content="#tab-list"]');
  2321.       let isPlaylistHidden = playlist.hasAttribute('hidden')
  2322.       //console.log(1212.2, isPlaylistHidden, playlist.getAttribute('hidden'))
  2323.       if (tabBtn) {
  2324.         //console.log('attr playlist changed')
  2325.         if (tabBtn.classList.contains('tab-btn-hidden') && !isPlaylistHidden) {
  2326.           //console.log('attr playlist changed - no hide')
  2327.           tabBtn.classList.remove("tab-btn-hidden");
  2328.         } else if (!tabBtn.classList.contains('tab-btn-hidden') && isPlaylistHidden) {
  2329.           //console.log('attr playlist changed - add hide')
  2330.           hideTabBtn(tabBtn);
  2331.         }
  2332.       }
  2333.       /* visible layout for triggering hidden removal */
  2334.       akAttr(cssElm, 'tabview-youtube-playlist', isPlaylistHidden);
  2335.     },
  2336.     mtf_attrComments: (attrName, newValue) => {
  2337.       //attr mutation checker - {ytd-comments#comments} \single
  2338.       //::attr ~ hidden
  2339.  
  2340.       let ytdFlexyElm = kRef(ytdFlexy);
  2341.       if (!scriptEnable || !ytdFlexyElm) return;
  2342.       if (deferredVarYTDHidden) return;
  2343.  
  2344.       let comments = document.querySelector('ytd-comments#comments')
  2345.       const tabBtn = document.querySelector('[userscript-tab-content="#tab-comments"]');
  2346.       if (!comments || !tabBtn) return;
  2347.       let isCommentHidden = comments.hasAttribute('hidden')
  2348.       //console.log('attr comments changed')
  2349.  
  2350.       mtoInterval = mtoInterval1;
  2351.       
  2352.       mtc_store=Date.now()+2870
  2353.  
  2354.       if( mtf_forceCheckLiveVideo_disable === 2 ){
  2355.  
  2356.       }else if (!isCommentHidden) {
  2357.         
  2358.  
  2359.         akAttr(ytdFlexyElm, 'tabview-youtube-comments', false, 'K');
  2360.  
  2361.  
  2362.  
  2363.         //console.log('attr comments changed - no hide')
  2364.         tabBtn.classList.remove("tab-btn-hidden") //if contains
  2365.  
  2366.             
  2367.         
  2368.         //console.log(703)
  2369.  
  2370.         mtc_cid&&timeline.clearInterval(mtc_cid);
  2371.  
  2372.       } else if (isCommentHidden) {
  2373.  
  2374.         akAttr(ytdFlexyElm, 'tabview-youtube-comments', true, 'K'); 
  2375.         
  2376.         timeline.setTimeout(function(){
  2377.           if(!deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0 && comments.hasAttribute('hidden')){
  2378.             //console.log(3434)
  2379.             scheduledCommentRefresh=false;  //logic tbc
  2380.             resetCommentSection();
  2381.             //console.log(8022)
  2382.           }
  2383.         },142)
  2384.  
  2385.  
  2386.         if(!mtc_cid) mtc_cid=timeline.setInterval(()=>{
  2387.           if(mtc_store>Date.now()) return;
  2388.             timeline.clearInterval(mtc_cid)
  2389.             mtc_cid=0;
  2390.             if(mtf_forceCheckLiveVideo_disable===2)return;
  2391.             if(isNullComments()) _disableComments();
  2392.  
  2393.         },80)
  2394.  
  2395.       }
  2396.  
  2397.  
  2398.     },
  2399.  
  2400.  
  2401.     mtf_attrChatroom: (attrName, newValue) => {
  2402.       //attr mutation checker - {ytd-live-chat-frame#chat} \single
  2403.       //::attr ~ collapsed
  2404.  
  2405.       let ytdFlexyElm = kRef(ytdFlexy);
  2406.       if (!scriptEnable || !ytdFlexyElm) return;
  2407.       if (deferredVarYTDHidden) return;
  2408.  
  2409.       layoutStatusMutex.lockWith(unlock => {
  2410.  
  2411.         const chatBlock = document.querySelector('ytd-live-chat-frame#chat')
  2412.         const cssElm = kRef(ytdFlexy)
  2413.  
  2414.         if (!chatBlock || !cssElm) {
  2415.           unlock();
  2416.           return;
  2417.         }
  2418.  
  2419.         if (deferredVarYTDHidden) {
  2420.           unlock();
  2421.           return;
  2422.         }
  2423.  
  2424.         if (!cssElm.hasAttribute('userscript-chatblock')) wAttr(cssElm, 'userscript-chatblock', true);
  2425.         let isCollapsed = !!chatBlock.hasAttribute('collapsed');
  2426.         wAttr(cssElm, 'userscript-chat-collapsed', isCollapsed);
  2427.  
  2428.         if (cssElm.hasAttribute('userscript-chatblock') && !isCollapsed) lastShowTab = '#chatroom';
  2429.  
  2430.         if (!isCollapsed && document.querySelector('#right-tabs .tab-btn.active') && isWideScreenWithTwoColumns() && !isTheater()) {
  2431.           switchTabActivity(null);
  2432.           timeline.setTimeout(unlock, 40);
  2433.         } else {
  2434.           unlock();
  2435.         }
  2436.  
  2437.         if (!isCollapsed) {
  2438.           runAfterExpandChat();
  2439.         } else {
  2440.           chatBlock.removeAttribute('yt-userscript-iframe-loaded');
  2441.         }
  2442.  
  2443.       })
  2444.  
  2445.  
  2446.  
  2447.  
  2448.     },
  2449.  
  2450.     mtf_attrEngagementPanel: ( /** @type {MutationRecord[]} */ mutations,  /** @type {MutationObserver} */   observer) => {
  2451.       //attr mutation checker - {ytd-engagement-panel-section-list-renderer} \mutiple
  2452.       //::attr ~ visibility
  2453.  
  2454.       let ytdFlexyElm = kRef(ytdFlexy);
  2455.       if (!scriptEnable || !ytdFlexyElm) return;
  2456.  
  2457.       //multiple instance
  2458.       if (mutations) {
  2459.         for (const mutation of mutations) {
  2460.           let ePanel = mutation.target;
  2461.           if (ePanel.getAttribute('visibility') == 'ENGAGEMENT_PANEL_VISIBILITY_EXPANDED') {
  2462.             setOnlyOneEPanel(ePanel);
  2463.             break;
  2464.           }
  2465.         }
  2466.       }
  2467.       if (deferredVarYTDHidden) return;
  2468.  
  2469.       layoutStatusMutex.lockWith(unlock => {
  2470.  
  2471.         const ePanel = document.querySelector('ytd-watch-flexy ytd-engagement-panel-section-list-renderer')
  2472.         const cssElm = kRef(ytdFlexy)
  2473.  
  2474.         if (!ePanel || !cssElm) {
  2475.           unlock();
  2476.           return;
  2477.         }
  2478.         let previousValue = +cssElm.getAttribute('userscript-engagement-panel') || 0;
  2479.  
  2480.         let { shownRes, value, count } = engagement_panels_();
  2481.         let nextValue = value;
  2482.         let nextCount = count;
  2483.  
  2484.  
  2485.         if (nextCount == 0 && cssElm.hasAttribute('userscript-engagement-panel')) {
  2486.           storeLastPanel=null;
  2487.           wAttr(cssElm, 'userscript-engagement-panel', false);
  2488.           unlock();
  2489.         } else {
  2490.  
  2491.           if ((nextCount > 1) || (cssElm.hasAttribute('userscript-engagement-panel') && previousValue === nextValue)) {
  2492.             unlock();
  2493.             return;
  2494.           }
  2495.  
  2496.           cssElm.setAttribute('userscript-engagement-panel', nextValue);
  2497.  
  2498.           let b = false;
  2499.           if (previousValue != nextValue && nextValue > 0) {
  2500.             lastShowTab = `#engagement-panel-${nextValue}`;
  2501.             b = true;
  2502.             storeLastPanel = mWeakRef( shownRes[0])
  2503.             //console.log(9999, shownRes[0])
  2504.           }
  2505.  
  2506.           if (b && document.querySelector('#right-tabs .tab-btn.active') && isWideScreenWithTwoColumns() && !isTheater()) {
  2507.             switchTabActivity(null);
  2508.             timeline.setTimeout(unlock, 40);
  2509.           } else {
  2510.             unlock();
  2511.           }
  2512.         }
  2513.  
  2514.       })
  2515.  
  2516.  
  2517.  
  2518.  
  2519.     },
  2520.  
  2521.     mtf_initalAttr_playlist: () => {
  2522.       
  2523.     },
  2524.  
  2525.     mtf_initalAttr_comments: () => {
  2526.       
  2527.     },
  2528.  
  2529.     mtf_initalAttr_chatroom: () => {
  2530.       // every per [new] {ytd-live-chat-frame#chat} detection - reset after mini-playview
  2531.       
  2532.       let ytdFlexyElm = kRef(ytdFlexy);
  2533.       if (!scriptEnable || !ytdFlexyElm) return true;
  2534.  
  2535.       const rootElement = Q.mutationTarget || ytdFlexyElm;
  2536.  
  2537.  
  2538.       if (!mgChatFrame.inPage()) {
  2539.  
  2540.         mtoVisibility_Chatroom.clear(true);
  2541.  
  2542.         let chatroom = querySelectorFromAnchor.call(rootElement,`ytd-live-chat-frame#chat:not([${sa_chatroom}]`)
  2543.         if (chatroom) {
  2544.           mgChatFrame.setVar(chatroom);
  2545.  
  2546.           if(mtoVisibility_Chatroom.bindElement(chatroom)){
  2547.             mtoVisibility_Chatroom.observer.check(9)
  2548.           }
  2549.  
  2550.           chatroom = null
  2551.         }
  2552.       }
  2553.       return true;
  2554.  
  2555.     },
  2556.  
  2557.     mtf_initalAttr_engagement_panel: () => {
  2558.       // every per $$non-checked-section-list$$ {ytd-watch-flexy ytd-engagement-panel-section-list-renderer:not([o3r-XXXXX])} detection
  2559.       
  2560.       let ytdFlexyElm = kRef(ytdFlexy);
  2561.       if (!scriptEnable || !ytdFlexyElm) return true;
  2562.  
  2563.       const rootElement = Q.mutationTarget || ytdFlexyElm;
  2564.  
  2565.       let toCheck = false;
  2566.       for (const engagement_panel of querySelectorAllFromAnchor.call(rootElement,
  2567.         `ytd-watch-flexy ytd-engagement-panel-section-list-renderer:not([o3r-${sa_epanel}])`
  2568.         )) {
  2569.  
  2570.  
  2571.  
  2572.         let bindRes = mtoVisibility_EngagementPanel.bindElement(engagement_panel, {
  2573.           attributes: true,
  2574.           attributeFilter: ['visibility'],
  2575.           attributeOldValue: true
  2576.         })
  2577.         
  2578.  
  2579.         if(bindRes) toCheck = true;
  2580.       }
  2581.  
  2582.       if (toCheck) FP.mtf_attrEngagementPanel()
  2583.  
  2584.       return true;
  2585.     },
  2586.  
  2587.  
  2588.  
  2589.     //live-chat / chat-replay
  2590.  
  2591.     fireOnce_forceCheckLiveVideo_tf: () => {
  2592.       // once per $$player-playback-timestamp$$ {#ytd-player .ytp-time-display} &&  $$chat-frame$$ {ytd-live-chat-frame#chat} detection
  2593.  
  2594.       let ytdFlexyElm = kRef(ytdFlexy);
  2595.       if (!scriptEnable || !ytdFlexyElm) return;
  2596.  
  2597.       let elm = document.querySelector('#ytd-player .ytp-time-display');
  2598.       if (elm && elm.classList.contains('ytp-live')) {
  2599.         //console.log(7006)
  2600.         ytdFlexyElm.setAttribute('userscript-chatblock', 'chat-live')
  2601.         //console.log(2441)
  2602.         mtf_forceCheckLiveVideo_disable = 2;
  2603.         
  2604.         _disableComments();
  2605.         
  2606.        //console.log(701)
  2607.         //disableComments_LiveChat();
  2608.       }
  2609.     },
  2610.  
  2611.     
  2612.  
  2613.     //comments
  2614. /*
  2615.     mtf_advancedComments: () => {
  2616.       // once per {ytd-comments#comments #continuations} detection
  2617.  
  2618.       //let ytdFlexyElm = kRef(ytdFlexy);
  2619.       //if (!scriptEnable || !ytdFlexyElm) return true;
  2620.  
  2621.       //const rootElement = Q.mutationTarget || ytdFlexyElm;
  2622.       //const continuations = document.querySelector("ytd-comments#comments #continuations");
  2623.       //if (!continuations) return true;
  2624.       //requestingComments = document.querySelector('ytd-comments#comments');
  2625.       //scrollForComments();
  2626.       return false;
  2627.     }
  2628.     */
  2629.  
  2630.  
  2631.   }
  2632.  
  2633.  
  2634.  
  2635.  
  2636.  
  2637.   /** @type {WeakRef | null} */ 
  2638.   let displayedPlaylist = null;
  2639.   
  2640.   /** @type {WeakRef | null} */ 
  2641.   let scrollingVideosList = null;
  2642.  
  2643.   let scriptEnable = false;
  2644.   let scriptEC = 0;
  2645.   let lastShowTab = null;
  2646.  
  2647.   let _cachedLastVideo = null;
  2648.   let videoListBeforeSearch = null;
  2649.   let no_fix_contents_until = 0;
  2650.   let no_fix_playlist_until = 0;
  2651.   let statusCollasped = 0;
  2652.  
  2653.   /** @type {WeakRef | null} */ 
  2654.   let ytdFlexy = null;
  2655.  
  2656.   function pluginUnhook() {
  2657.     _pluginUnhook();
  2658.     resetCommentSection();
  2659.   }
  2660.  
  2661.   function _pluginUnhook() {
  2662.  
  2663.     sect_lastUpdate = 0;
  2664.     sect_holder = null;
  2665.     sect_hTime = 0;
  2666.  
  2667.     //console.log(8001)
  2668.  
  2669.     videoListBeforeSearch = null;
  2670.     statusCollasped = 0;
  2671.     _cachedLastVideo = null;
  2672.     lastShowTab = null;
  2673.     displayedPlaylist = null;
  2674.     scrollingVideosList = null;
  2675.     scriptEnable = false;
  2676.     scriptEC++;
  2677.     if (scriptEC > 788888888) scriptEC = 188888888;
  2678.     ytdFlexy = null;
  2679.     wls.layoutStatus = null;
  2680.  
  2681.     //console.log('unc01')
  2682.  
  2683.     mtoVisibility_EngagementPanel.clear(true)
  2684.     mtoVisibility_Playlist.clear(true)
  2685.     mtoVisibility_Comments.clear(true)
  2686.  
  2687.     mgChatFrame.kVar = null;
  2688.     mtoVisibility_Chatroom.clear(true)
  2689.     mtoFlexyAttr.clear(true)
  2690.  
  2691.     
  2692.  
  2693.     for (const elem of document.querySelectorAll(
  2694.       ['ytd-expander[tabview-info-expander]'].join(', ')
  2695.       )) {
  2696.         elem.removeAttribute('tabview-info-expander');
  2697.     }
  2698.  
  2699.     
  2700.     mtoMutation_body.clear(true)
  2701.     mtoMutation_watchFlexy.clear(true)
  2702.     //FOnce.mtf_checkFlexy = null;
  2703.     //FOnce.mtf_initalAttr_comments = null;
  2704.     //FOnce.mtf_initalAttr_playlist = null;
  2705.     //FOnce.mtf_initalAttr_chatroom = null;
  2706.     //FOnce.mtf_initalAttr_engagement_panel = null;
  2707.     //FOnce.mtf_advancedComments = null;
  2708.     //FOnce.mtf_checkDescriptionLoaded = null;
  2709.     //FOnce.mtf_forceCheckLiveVideo = null;
  2710.     Q.mtf_chatBlockQ = null;
  2711.  
  2712.  
  2713.     mtoInterval = mtoInterval1;
  2714.  
  2715.   }
  2716.  
  2717.   let comments_section_loaded_elm = null;
  2718.  
  2719.  
  2720.  
  2721.   function getTabsHTML() {
  2722.  
  2723.     const sTabBtnVideos = `${svgElm(16,16,298,298,svgVideos)}<span>Videos</span>`
  2724.     const sTabBtnInfo = `${svgElm(16,16,23.625,23.625,svgInfo)}<span>Info</span>`
  2725.     const sTabBtnPlayList = `${svgElm(16,16,426.667,426.667,svgPlayList)}<span>Playlist</span>`
  2726.  
  2727.     let str1 = `
  2728.         <paper-ripple class="style-scope yt-icon-button">
  2729.             <div id="background" class="style-scope paper-ripple" style="opacity:0;"></div>
  2730.             <div id="waves" class="style-scope paper-ripple"></div>
  2731.         </paper-ripple>
  2732.         `;
  2733.  
  2734.     let str_fbtns = `
  2735.     <div class="font-size-right">
  2736.     <div class="font-size-btn font-size-plus">
  2737.     <svg width="12" height="12" viewbox="0 0 50 50" preserveAspectRatio="xMidYMid meet" 
  2738.     stroke="currentColor" stroke-width="6" stroke-linecap="round" vector-effect="non-scaling-size">
  2739.       <path d="M12 25h26"/><path d="M25 12v26"/>
  2740.     </svg>
  2741.     </div><div class="font-size-btn font-size-minus">
  2742.     <svg width="12" height="12" viewbox="0 0 50 50" preserveAspectRatio="xMidYMid meet"
  2743.     stroke="currentColor" stroke-width="6" stroke-linecap="round" vector-effect="non-scaling-size">
  2744.       <path d="M12 25h26"/>
  2745.     </svg>
  2746.     </div>
  2747.     </div>
  2748.     `.replace(/[\r\n]+/g,'')
  2749.  
  2750.     const str_tabs = [
  2751.             `<a id="tab-btn1" data-name="info" userscript-tab-content="#tab-info" class="tab-btn">${sTabBtnInfo}${str1}${str_fbtns}</a>`,
  2752.             `<a id="tab-btn3" userscript-tab-content="#tab-comments" data-name="comments" class="tab-btn">${svgElm(16,16,60,60,svgComments)}<span id="tab3-txt-loader"></span>${str1}${str_fbtns}</a>`,
  2753.             `<a id="tab-btn4" userscript-tab-content="#tab-videos" data-name="videos" class="tab-btn">${sTabBtnVideos}${str1}${str_fbtns}</a>`,
  2754.             `<a id="tab-btn5" userscript-tab-content="#tab-list" class="tab-btn">${sTabBtnPlayList}${str1}${str_fbtns}</a>`
  2755.         ].join('')
  2756.  
  2757.     let addHTML = `
  2758.         <div id="right-tabs">
  2759.             <header>
  2760.                 <div id="material-tabs">
  2761.                     ${str_tabs}
  2762.                 </div>
  2763.             </header>
  2764.             <div class="tab-content">
  2765.                 <div id="tab-info" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2766.                 <div id="tab-comments" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2767.                 <div id="tab-videos" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2768.                 <div id="tab-list" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
  2769.             </div>
  2770.         </div>
  2771.         `;
  2772.  
  2773.     return addHTML
  2774.  
  2775.   }
  2776.  
  2777.  
  2778.   function onVideoChange() {
  2779.     // for popstate & next video
  2780.  
  2781.     newVideoPageCheck();
  2782.  
  2783.     scheduledCommentRefresh=true;
  2784.     let comments = document.querySelector('ytd-comments#comments')
  2785.     
  2786.     if(!deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0 && comments.hasAttribute('hidden')){
  2787.  
  2788.       scheduledCommentRefresh=false; 
  2789.       
  2790.       // comment tab btn - hide by timer in attribute change
  2791.       resetCommentSection();
  2792.     }
  2793.  
  2794.     mtf_forceCheckLiveVideo_disable = 0
  2795.     mtc_store= Date.now()+3870
  2796.  
  2797.     if (deferredVarYTDHidden) {  // reset info when hidden
  2798.       
  2799.       resetCommentSection();
  2800.     }else{
  2801.       checkVisibleEngagementPanel();
  2802.       atChange(); // in case no mutation occurance
  2803.     }
  2804.  
  2805.  
  2806.  
  2807.   }
  2808.  
  2809.   function onNavigationEnd(evt) {
  2810.     console.log('yt-navigate-finish')
  2811.     
  2812.     document.documentElement.setAttribute('youtube-ready','')
  2813.     
  2814.     script_inject_js1.inject();
  2815.     document.documentElement.dispatchEvent(new CustomEvent('tabview-ce-hack'))
  2816.  
  2817.     forceConfig();
  2818.     /*
  2819.     console.log(window.ytcfg)
  2820.     try{
  2821.     window.ytcfg.set({
  2822.       "EXPERIMENT_FLAGS": {"kevlar_watch_metadata_refresh":false}})
  2823.     }catch(e){}
  2824.     */
  2825.  
  2826.     newVideoPageCheck(); // required for init
  2827.  
  2828.     let mRet =
  2829.       (/^https?\:\/\/(\w+\.)*youtube\.com\/watch\?(\w+\=[^\/\?\&]+\&|\w+\=?\&)*v=[\w\-\_]+/.test(window.location.href) ? 1 : 0) +
  2830.       (document.querySelector('ytd-watch-flexy[tabview-selection]') ? 2 : 0);
  2831.  
  2832.     if (mRet === 1) {
  2833.  
  2834.       document.addEventListener('loadedmetadata', function(evt) {
  2835.         if (evt.target.matches('video[tabview-mainvideo]')) {
  2836.           setTimeout(onVideoChange, 30)
  2837.         }
  2838.       }, true)
  2839.  
  2840.       pluginUnhook(); // in case not triggered by popstate - say mini playing
  2841.  
  2842.       let timeout = 4; // max. 4 animation frames
  2843.  
  2844.       let tf = () => {
  2845.  
  2846.         if (--timeout > 0 && !document.querySelector('#player video')) return requestAnimationFrame(tf);
  2847.  
  2848.         let ytdFlexyElm = document.querySelector('ytd-watch-flexy')
  2849.  
  2850.         if(!ytdFlexyElm) return;
  2851.  
  2852.  
  2853.         scriptEnable = true;
  2854.         scriptEC++;
  2855.  
  2856.         no_fix_contents_until = 0;
  2857.         no_fix_playlist_until = 0;
  2858.  
  2859.         ytdFlexy = mWeakRef(ytdFlexyElm)
  2860.  
  2861.         let timeoutR_findRelated = new Timeout();
  2862.         timeoutR_findRelated.set(function() {
  2863.           let ytdFlexyElm = kRef(ytdFlexy);
  2864.           if(!ytdFlexyElm) return true;
  2865.           let related = querySelectorFromAnchor.call(ytdFlexyElm,"#related");
  2866.           if (!related) return true;
  2867.           foundRelated(related);
  2868.         }, 100, 10)
  2869.  
  2870.         function foundRelated(related) {
  2871.           let promise = Promise.resolve();
  2872.           if (!document.querySelector("#right-tabs")) {
  2873.             promise = promise.then(() => {
  2874.               $(getTabsHTML()).insertBefore(related).attr('data-dom-created-by-tabview-youtube', scriptVersionForExternal);
  2875.             })
  2876.           }
  2877.           promise.then(runAfterTabAppended)
  2878.         }
  2879.  
  2880.         /*
  2881.         setTimeout(() => {
  2882.           for (const s of document.querySelectorAll('#right-tabs [userscript-scrollbar-render]')) {
  2883.             Promise.resolve(s).then(s => {
  2884.               if (s && s.scrollTop > 0) s.scrollTop = 0;
  2885.               let child = s.firstElementChild;
  2886.               if (child && child.scrollTop > 0) child.scrollTop = 0;
  2887.             });
  2888.           }
  2889.         }, 90)
  2890.         */
  2891.  
  2892.  
  2893.       }
  2894.  
  2895.       tf();
  2896.  
  2897.     } else if (mRet === 3) {
  2898.  
  2899.       if(!scriptEnable) return;
  2900.  
  2901.       let elmComments = document.querySelector('ytd-comments#comments')
  2902.  
  2903.       if (elmComments) {
  2904.         nativeFunc(elmComments, "loadComments")
  2905.       }
  2906.  
  2907.     } else if (mRet === 0) {
  2908.       
  2909.  
  2910.       pluginUnhook(); // in case not triggered by popstate - say mini playing
  2911.  
  2912.     }
  2913.  
  2914.     if(mRet & 1){
  2915.       
  2916.       setTimeout(()=>{
  2917.         
  2918.         Q.mutationTarget=null;
  2919.         atChange(); // in case no mutation occurance
  2920.         FP.mtf_attrComments()
  2921.       },160);
  2922.         
  2923.     }
  2924.  
  2925.   }
  2926.  
  2927.  
  2928.   function setToActiveTab(defaultTab) {
  2929.     if (isTheater() && isWideScreenWithTwoColumns()) return;
  2930.     const jElm = document.querySelector(`a[userscript-tab-content="${switchTabActivity_lastTab}"]:not(.tab-btn-hidden)`) ||
  2931.       document.querySelector(`a[userscript-tab-content="${(defaultTab||settings.defaultTab)}"]:not(.tab-btn-hidden)`) ||
  2932.       document.querySelector("a[userscript-tab-content]:not(.tab-btn-hidden)") ||
  2933.       null;
  2934.     switchTabActivity(jElm);
  2935.     return !!jElm;
  2936.   }
  2937.  
  2938.   function getWrapper(wrapperId) {
  2939.     let $wrapper = $(`#${wrapperId}`);
  2940.     if (!$wrapper[0]) $wrapper = $(`<div id="${wrapperId}"></div>`)
  2941.     return $wrapper.first();
  2942.   }
  2943.  
  2944.   function runAfterTabAppended() {
  2945.  
  2946.     document.documentElement.setAttribute('plugin-tabview-youtube', '')
  2947.  
  2948.     const ytdFlexyElm = kRef(ytdFlexy)
  2949.     if(!ytdFlexyElm) return;
  2950.     if (!ytdFlexyElm.hasAttribute('tabview-selection')) ytdFlexyElm.setAttribute('tabview-selection', '')
  2951.  
  2952.     
  2953.  
  2954.     
  2955.     //console.log('unc02')
  2956.  
  2957.     // append the next videos 
  2958.     // it exists as "related" is already here
  2959.     fixTabs();
  2960.  
  2961.     // just switch to the default tab
  2962.     setToActiveTab();
  2963.  
  2964.  
  2965.     prepareTabBtn();
  2966.  
  2967.  
  2968.     // append the detailed meta contents to the tab-info
  2969.     // ** FOnce.mtf_checkDescriptionLoaded = FP.mtf_checkDescriptionLoaded;
  2970.     // ** if (Q.mutationTarget === null) $callOnceAsync('mtf_checkDescriptionLoaded');
  2971.  
  2972.     // force window scroll when #continuations is first detected and #comments still [hidden]
  2973.     //FOnce.mtf_advancedComments = FP.mtf_advancedComments;
  2974.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_advancedComments');
  2975.  
  2976.     // use video player's element to detect the live-chat situation (no commenting section)
  2977.     // 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
  2978.     //FOnce.mtf_forceCheckLiveVideo = FP.mtf_forceCheckLiveVideo;
  2979.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_forceCheckLiveVideo');
  2980.     //mtf_forceCheckLiveVideo();
  2981.  
  2982.  
  2983.     // Attr Mutation Observer - #playlist - hidden
  2984.     //clearMutationObserver(mtoVs, 'mtoVisibility_Playlist')
  2985.     // Attr Mutation Observer callback - #playlist - hidden
  2986.  
  2987.     // pending for #playlist and set Attribute Observer
  2988.     // ** FOnce.mtf_initalAttr_playlist = FP.mtf_initalAttr_playlist
  2989.     // ** if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_playlist');
  2990.  
  2991.     // Attr Mutation Observer - ytd-comments#comments - hidden
  2992.     //clearMutationObserver(mtoVs, 'mtoVisibility_Comments')
  2993.     // Attr Mutation Observer callback - ytd-comments#comments - hidden
  2994.  
  2995.     // pending for #comments and set Attribute Observer
  2996.     // ** FOnce.mtf_initalAttr_comments = FP.mtf_initalAttr_comments;
  2997.     // ** if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_comments');
  2998.  
  2999.  
  3000.     //clearMutationObserver(mtoVs, 'mtoVisibility_Chatroom');
  3001.     //FOnce.mtf_initalAttr_chatroom = FP.mtf_initalAttr_chatroom
  3002.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_chatroom');
  3003.  
  3004.     // clearMutationObserver(mtoVs, 'mtoVisibility_EngagementPanel');
  3005.     // for (const engagement_panel of document.querySelectorAll('ytd-watch-flexy ytd-engagement-panel-section-list-renderer:not([tabview-attr-checked])')) {
  3006.     //   engagement_panel.removeAttribute('tabview-attr-checked');
  3007.     // }
  3008.     //FOnce.mtf_initalAttr_engagement_panel = FP.mtf_initalAttr_engagement_panel
  3009.     //if (Q.mutationTarget === null) $callOnceAsync('mtf_initalAttr_engagement_panel');
  3010.  
  3011.  
  3012.     mtoFlexyAttr.clear(true)
  3013.     mtf_checkFlexy()
  3014.  
  3015.  
  3016.     document.querySelector("#right-tabs .tab-content").addEventListener('scroll', makeBodyScrollByEvt, true);
  3017.  
  3018.  
  3019.     Q.addP = 0;
  3020.     Q.removeP = 0;
  3021.     Q.mutationTarget = null;
  3022.  
  3023.     Q.mtoNav_requestNo = 0;
  3024.  
  3025.  
  3026.     mtoMutation_watchFlexy.bindElement(ytdFlexyElm, {
  3027.       childList: true,
  3028.       subtree: true,
  3029.       attributes: false
  3030.     })
  3031.  
  3032.     // for automcomplete plugin or other userscript plugins
  3033.     // document.body for Firefox >= 60
  3034.     mtoMutation_body.bindElement(document.querySelector('body'), {
  3035.       childList: true,
  3036.       subtree: false,
  3037.       attributes: false
  3038.     })
  3039.  
  3040.  
  3041.     regularCheck(1, 0, null);
  3042.  
  3043.     
  3044.  
  3045.  
  3046.  
  3047.   }
  3048.  
  3049.  
  3050.   function fetchCommentsFinished() {
  3051.     let ytdFlexyElm = kRef(ytdFlexy);
  3052.     if (!scriptEnable || !ytdFlexyElm) return;
  3053.     if(mtf_forceCheckLiveVideo_disable===2) return;
  3054.     akAttr(ytdFlexyElm, 'tabview-youtube-comments', false, 'LS')
  3055.   }
  3056.  
  3057.   function setCommentSection( /** @type {number} */ value) {
  3058.  
  3059.     Q.comments_section_loaded = value;
  3060.  
  3061.     if (value === 0) {
  3062.       sect_lastUpdate = 0;
  3063.       comments_section_loaded_elm = null;
  3064.     }
  3065.  
  3066.   }
  3067.  
  3068.   function resetCommentSection(){
  3069.     
  3070.  
  3071.     let tab_btn = document.querySelector('.tab-btn[userscript-tab-content="#tab-comments"]')
  3072.  
  3073.  
  3074.     if(tab_btn){
  3075.  
  3076.       let span = querySelectorFromAnchor.call(tab_btn,'span#tab3-txt-loader');
  3077.  
  3078.       tab_btn.removeAttribute('loaded-comment')
  3079.       tab_btn.classList.remove('tab-btn-hidden')
  3080.         
  3081.       if(span){
  3082.         span.textContent='';
  3083.       }
  3084.     }
  3085.  
  3086.  
  3087.     setCommentSection(0);
  3088.  
  3089.  
  3090.   }
  3091.  
  3092.   function _disableComments() {
  3093.     
  3094.     //requestingComments = null;
  3095.     mtc_cid && timeline.clearInterval(mtc_cid)
  3096.     mtc_cid=0;
  3097.  
  3098.     if (!scriptEnable) return;
  3099.     let cssElm = kRef(ytdFlexy);
  3100.     if (!cssElm) return;
  3101.  
  3102.     mtoInterval = mtoInterval2;
  3103.  
  3104.     if(Q.comments_section_loaded>0) return; //already displayed / disabled
  3105.  
  3106.     scheduledCommentRefresh=false;
  3107.     setCommentSection(2);
  3108.  
  3109.     comments_section_loaded_elm = mWeakRef(document.querySelector('ytd-comments#comments div#contents') || null)
  3110.  
  3111.     let tabBtn = document.querySelector('.tab-btn[userscript-tab-content="#tab-comments"]');
  3112.     if(tabBtn) {
  3113.       tabBtn.removeAttribute('loaded-comment')
  3114.       if (!tabBtn.classList.contains('tab-btn-hidden')) {
  3115.         hideTabBtn(tabBtn)
  3116.       }
  3117.     }
  3118.  
  3119.     akAttr(cssElm, 'tabview-youtube-comments', true, 'D');
  3120.  
  3121.  
  3122.   }
  3123.  
  3124.  
  3125.  
  3126.  
  3127.   let layoutStatusMutex = new Mutex();
  3128.  
  3129.   function forceDisplayChatReplay() {
  3130.     let items = chatFrameElement('yt-live-chat-item-list-renderer #items');
  3131.     if (items && items.childElementCount !== 0) return;
  3132.  
  3133.     let ytd_player = document.querySelector('ytd-player#ytd-player');
  3134.     if (!ytd_player) return;
  3135.     let videoElm = querySelectorFromAnchor.call(ytd_player,'video');
  3136.     if (!videoElm) return;
  3137.  
  3138.     let video = videoElm;
  3139.     if (videoElm && video.currentTime > 0 && !video.ended && video.readyState > video.HAVE_CURRENT_DATA) {
  3140.       let chat = document.querySelector('ytd-live-chat-frame#chat');
  3141.       if (chat) {
  3142.         nativeFunc(chat, "postToContentWindow", [{ "yt-player-video-progress": videoElm.currentTime }])
  3143.       }
  3144.     }
  3145.  
  3146.   }
  3147.  
  3148.  
  3149.  
  3150.   function runAfterExpandChat() {
  3151.  
  3152.  
  3153.     if(runAfterExpandChat.cid_chatFrameCheck1) timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck1);
  3154.     if(runAfterExpandChat.cid_chatFrameCheck2) timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck2);
  3155.     runAfterExpandChat.cid_chatFrameCheck1=0;
  3156.     runAfterExpandChat.cid_chatFrameCheck2=0;
  3157.  
  3158.     new Promise(resolve => {
  3159.  
  3160.       let chatFrame_st = Date.now();
  3161.       runAfterExpandChat.cid_chatFrameCheck1 = 0;
  3162.  
  3163.       let sEF = new ScriptEF();
  3164.       runAfterExpandChat.cid_chatFrameCheck1 = timeline.setInterval(() => {
  3165.         if (!sEF.isValid()) return runAfterExpandChat.cid_chatFrameCheck1 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck1);
  3166.         let cDoc = chatFrameContentDocument();
  3167.         if (cDoc) {
  3168.           runAfterExpandChat.cid_chatFrameCheck1 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck1);
  3169.           resolve();
  3170.         } else if (!scriptEnable || !isChatExpand() || Date.now() - chatFrame_st > 6750) {
  3171.           runAfterExpandChat.cid_chatFrameCheck1 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck1);
  3172.         }
  3173.       }, 60);
  3174.  
  3175.  
  3176.     }).then(() => new Promise(resolve => {
  3177.  
  3178.  
  3179.       let chatFrame_st = Date.now();
  3180.       runAfterExpandChat.cid_chatFrameCheck2 = 0;
  3181.  
  3182.       let sEF = new ScriptEF();
  3183.       runAfterExpandChat.cid_chatFrameCheck2 = timeline.setInterval(() => {
  3184.         if (!sEF.isValid()) return runAfterExpandChat.cid_chatFrameCheck2 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck2);
  3185.         let app = chatFrameElement('yt-live-chat-app');
  3186.         if (app) {
  3187.           runAfterExpandChat.cid_chatFrameCheck2 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck2);
  3188.           resolve(app);
  3189.         } else if (!scriptEnable || !isChatExpand() || Date.now() - chatFrame_st > 6750*3) {
  3190.           runAfterExpandChat.cid_chatFrameCheck2 = timeline.clearInterval(runAfterExpandChat.cid_chatFrameCheck2);
  3191.         }
  3192.       }, 60);
  3193.  
  3194.  
  3195.     })).then(app => {
  3196.  
  3197.  
  3198.       let cDoc = app.ownerDocument;
  3199.  
  3200.       if (!scriptEnable || !isChatExpand()) return;
  3201.       if(cDoc.querySelector('#userscript-tabview-chatroom-css')) return;
  3202.       addStyle(`      
  3203.                 body #input-panel.yt-live-chat-renderer::after {
  3204.                     background: transparent;
  3205.                 }
  3206.                 #items.yt-live-chat-item-list-renderer{
  3207.                     contain: content;
  3208.                 }
  3209.                 yt-live-chat-text-message-renderer{
  3210.                     contain: content;
  3211.                 }
  3212.                 #item-offset.yt-live-chat-item-list-renderer{
  3213.                     contain: content;
  3214.                 }
  3215.                 #item-scroller.yt-live-chat-item-list-renderer{
  3216.                     contain: strict;
  3217.                 }
  3218.                 img[width][height]{
  3219.                     contain: strict;
  3220.                 }
  3221.                 #item-list > yt-live-chat-item-list-renderer, #item-list > yt-live-chat-item-list-renderer > #contents{
  3222.                     contain: strict;
  3223.                 }
  3224.  
  3225.  
  3226.                 #chat.style-scope.yt-live-chat-renderer,
  3227.                 yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer,
  3228.                 #item-scroller,
  3229.                 yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer .style-scope.yt-live-chat-text-message-renderer,
  3230.                 yt-live-chat-ticker-paid-message-item-renderer
  3231.                 {
  3232.                   contain: layout paint style;
  3233.                 }
  3234.                  
  3235.                 yt-img-shadow#author-photo.style-scope{
  3236.                   contain: layout paint style;
  3237.                   content-visibility: auto;
  3238.                   contain-intrinsic-size: 24px 24px;
  3239.                 }
  3240.                  
  3241.                 #item-offset.style-scope.yt-live-chat-item-list-renderer,
  3242.                 #items.style-scope.yt-live-chat-item-list-renderer {
  3243.                   contain: layout paint;
  3244.                 }
  3245.                  
  3246.                 .style-scope.yt-live-chat-text-message-renderer {
  3247.                   cursor: default;
  3248.                 }
  3249.                  
  3250.                 #author-photo.style-scope.yt-live-chat-text-message-renderer,
  3251.                 yt-live-chat-author-chip.style-scope.yt-live-chat-text-message-renderer,
  3252.                 yt-live-chat-author-chip.style-scope.yt-live-chat-text-message-renderer ~ span#message.style-scope.yt-live-chat-text-message-renderer
  3253.                 {
  3254.                   pointer-events: none;
  3255.                 }
  3256.                  
  3257.                 span#message.style-scope.yt-live-chat-text-message-renderer > img.emoji.yt-formatted-string.style-scope.yt-live-chat-text-message-renderer{
  3258.                   contain: layout paint style;
  3259.                   cursor: default;
  3260.                   pointer-events: none;
  3261.                 }
  3262.                  
  3263.                 body yt-live-chat-app{
  3264.                   contain: size layout paint style;
  3265.                   content-visibility: auto;
  3266.                   transform: translate3d(0,0,0);
  3267.                   overflow: hidden;
  3268.                 }
  3269.  
  3270.  
  3271.                 /*
  3272.                 yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer:nth-last-of-type(n+20){
  3273.                   content-visibility: auto;
  3274.                 }
  3275.                 */
  3276.  
  3277.                 /*
  3278.                 @supports (contain-intrinsic-size: auto 1px){
  3279.  
  3280.                   yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer{
  3281.                     content-visibility: auto;
  3282.                     contain-intrinsic-size: auto 24px; 
  3283.                   }
  3284.  
  3285.                 }
  3286.                 */
  3287.                  
  3288.                 .style-scope.yt-live-chat-item-list-renderer{
  3289.                   box-sizing: border-box; 
  3290.                 }
  3291.  
  3292.                 /*
  3293.                 .style-scope.yt-live-chat-item-list-renderer[style*="--tabview-crm-height"]{
  3294.                   content-visibility: auto;
  3295.                   contain-intrinsic-size: 1px var(--tabview-crm-height, 24px); 
  3296.                 }
  3297.  
  3298.                 #item-offset.style-scope.yt-live-chat-item-list-renderer{
  3299.                   height: auto !important;
  3300.                 }
  3301.                 #item-offset.style-scope.yt-live-chat-item-list-renderer > #items:only-child{
  3302.                   position: relative !important;
  3303.                 }*/
  3304.  
  3305.                 #item-offset.style-scope.yt-live-chat-item-list-renderer{
  3306.                   contain: size layout paint style;
  3307.                 }
  3308.                 #item-offset.style-scope.yt-live-chat-item-list-renderer > #items:only-child{
  3309.                   contain: layout paint style;
  3310.                 }
  3311.  
  3312.  
  3313.             `, cDoc.documentElement).id='userscript-tabview-chatroom-css'
  3314.  
  3315.             let frc= 0;
  3316.       let fullReady = ()=>{
  3317.  
  3318.  
  3319.         if(!cDoc.documentElement.hasAttribute('style') && ++frc<900) return timeline.setTimeout(fullReady,10);
  3320.  
  3321.         if (cDoc.querySelector('yt-live-chat-renderer #continuations')) {
  3322.           timeline.setTimeout(() => mtf_ChatExist(), 40);
  3323.           $(document.querySelector('ytd-live-chat-frame#chat')).attr('yt-userscript-iframe-loaded', '')
  3324.         }
  3325.  
  3326.         forceDisplayChatReplay();
  3327.  
  3328.         let iframe = document.querySelector('ytd-live-chat-frame iframe#chatframe');
  3329.  
  3330.  
  3331.         iframe.dispatchEvent(new CustomEvent("tabview-chatroom-ready"))
  3332.  
  3333.  
  3334.  
  3335.       }
  3336.       fullReady();
  3337.  
  3338.  
  3339.  
  3340.     })
  3341.  
  3342.   }
  3343.  
  3344.   function flexyAttr_toggleFlag(mFlag, b, flag) {
  3345.     if (b) mFlag = mFlag | flag;
  3346.     else mFlag = mFlag & ~flag;
  3347.     return mFlag;
  3348.   }
  3349.  
  3350.   function flexAttr_toLayoutStatus(nls, attributeName) {
  3351.  
  3352.     let attrElm, b, v;
  3353.     switch (attributeName) {
  3354.       case 'theater':
  3355.         nls = flexyAttr_toggleFlag(nls, isTheater(), LAYOUT_THEATER);
  3356.         break;
  3357.       case 'userscript-chat-collapsed':
  3358.       case 'userscript-chatblock':
  3359.         attrElm = kRef(ytdFlexy);
  3360.         if (hasAttribute(attrElm, 'userscript-chat-collapsed')) {
  3361.           nls = flexyAttr_toggleFlag(nls, true, LAYOUT_CHATROOM | LAYOUT_CHATROOM_COLLASPED);
  3362.         } else {
  3363.           nls = flexyAttr_toggleFlag(nls, hasAttribute(attrElm, 'userscript-chatblock'), LAYOUT_CHATROOM);
  3364.           nls = flexyAttr_toggleFlag(nls, false, LAYOUT_CHATROOM_COLLASPED);
  3365.         }
  3366.         break;
  3367.       case 'is-two-columns_':
  3368.         nls = flexyAttr_toggleFlag(nls, isWideScreenWithTwoColumns(), LAYOUT_TWO_COLUMNS);
  3369.         break;
  3370.  
  3371.       case 'tabview-selection':
  3372.         b = isNonEmptyString(kRef(ytdFlexy).getAttribute('tabview-selection'));
  3373.         nls = flexyAttr_toggleFlag(nls, b, LAYOUT_TAB_EXPANDED);
  3374.         break;
  3375.  
  3376.       case 'fullscreen':
  3377.         b = isNonEmptyString(kRef(ytdFlexy).getAttribute('fullscreen'));
  3378.         nls = flexyAttr_toggleFlag(nls, b, LAYOUT_FULLSCREEN);
  3379.         break;
  3380.  
  3381.       case 'userscript-engagement-panel':
  3382.         v = kRef(ytdFlexy).getAttribute('userscript-engagement-panel');
  3383.         b = (+v > 0)
  3384.         nls = flexyAttr_toggleFlag(nls, b, LAYOUT_ENGAGEMENT_PANEL_EXPAND);
  3385.         break;
  3386.  
  3387.     }
  3388.  
  3389.     return nls;
  3390.  
  3391.  
  3392.   }
  3393.  
  3394.   let mtf_attrFlexy = (mutations, observer) => {
  3395.  
  3396.     //attr mutation checker - $$ytdFlexyElm$$ {ytd-watch-flexy} \single
  3397.     //::attr    
  3398.     // ~ 'userscript-chat-collapsed', 'userscript-chatblock', 'theater', 'is-two-columns_', 
  3399.     // ~ 'tabview-selection', 'fullscreen', 'userscript-engagement-panel', 
  3400.     // ~ 'hidden'
  3401.  
  3402.     //console.log(15330, scriptEnable, kRef(ytdFlexy), mutations)
  3403.  
  3404.     if (!scriptEnable) return;
  3405.  
  3406.     const cssElm = kRef(ytdFlexy)
  3407.     if (!cssElm) return;
  3408.  
  3409.     if (!mutations) return;
  3410.  
  3411.     //console.log(15340)
  3412.     ytdFlexyHiddenCheck(mutations);
  3413.  
  3414.     const old_layoutStatus = wls.layoutStatus
  3415.     if (old_layoutStatus === null) return;
  3416.     let new_layoutStatus = old_layoutStatus;
  3417.  
  3418.     let checkedChat = false;
  3419.  
  3420.     for (const mutation of mutations) {
  3421.       new_layoutStatus = flexAttr_toLayoutStatus(new_layoutStatus, mutation.attributeName);
  3422.       if (mutation.attributeName == 'userscript-chat-collapsed' || mutation.attributeName == 'userscript-chatblock') {
  3423.  
  3424.         if(!checkedChat){
  3425.           checkedChat = true; // avoid double call
  3426.  
  3427.           if (cssElm.getAttribute('userscript-chatblock') === 'chat-live') {
  3428.             // assigned new attribute - "chat-live" => disable comments section
  3429.             _disableComments();
  3430.           }
  3431.  
  3432.           if (!cssElm.hasAttribute('userscript-chatblock')) {
  3433.             // might or might not collapsed before
  3434.             timeline.setTimeout(() => {
  3435.               if (!scriptEnable) return;
  3436.               //delayed call => check with the "no active focus" condition with chatroom status
  3437.               if (!isAnyActiveTab() && !isChatExpand() && !isTheater() && isWideScreenWithTwoColumns() && !isFullScreen()) {
  3438.                 setToActiveTab();
  3439.               }
  3440.             }, 240);
  3441.           }
  3442.         }
  3443.  
  3444.       }else if(mutation.attributeName == 'userscript-engagement-panel'){
  3445.         // assume any other active component such as tab content and chatroom
  3446.         
  3447.         if (+(cssElm.getAttribute('userscript-engagement-panel')||0)===0 && +mutation.oldValue>0) {
  3448.           timeline.setTimeout(() => {
  3449.             if (!scriptEnable) return;
  3450.             //delayed call => check with the "no active focus" condition with engagement panel status
  3451.             if (!isAnyActiveTab() && !isEngagementPanelExpanded() && !isTheater() && isWideScreenWithTwoColumns() && !isFullScreen() && !isChatExpand()) {
  3452.               setToActiveTab();
  3453.             }
  3454.           }, 240);
  3455.         }
  3456.       }
  3457.     }
  3458.  
  3459.     if (new_layoutStatus !== old_layoutStatus) wls.layoutStatus = new_layoutStatus
  3460.  
  3461.   }
  3462.  
  3463.   const mtf_checkFlexy = () => {
  3464.     // once per $$native-ytd-watch-flexy$$ {ytd-watch-flexy} detection
  3465.  
  3466.     let ytdFlexyElm = kRef(ytdFlexy);
  3467.     if (!scriptEnable || !ytdFlexyElm) return true;
  3468.  
  3469.  
  3470.     wls.layoutStatus = null;
  3471.  
  3472.     let isFlexyHidden = (deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden'));
  3473.  
  3474.     if (!isFlexyHidden) {
  3475.       let rChatExist = base_ChatExist();
  3476.       if (rChatExist) {
  3477.         let { attr_chatblock, attr_chatcollapsed } = rChatExist;
  3478.         if (attr_chatblock === null) {
  3479.           //remove attribute if it is unknown
  3480.           attr_chatblock = false;
  3481.           attr_chatcollapsed = false;
  3482.         }
  3483.         wAttr(ytdFlexyElm, 'userscript-chatblock', attr_chatblock)
  3484.         wAttr(ytdFlexyElm, 'userscript-chat-collapsed', attr_chatcollapsed)
  3485.       }
  3486.     }
  3487.  
  3488.     let rTabSelection = [...querySelectorAllFromAnchor.call(ytdFlexyElm,'.tab-btn[userscript-tab-content]')]
  3489.       .map(elm => ({ elm, hidden: elm.classList.contains('tab-btn-hidden') }));
  3490.  
  3491.     if(rTabSelection.length === 0){
  3492.       wAttr(ytdFlexyElm, 'tabview-selection', false);
  3493.     }else{
  3494.       rTabSelection=rTabSelection.filter(entry => entry.hidden !== true); // all available tabs
  3495.       if (rTabSelection.length === 0) wAttr(ytdFlexyElm, 'tabview-selection', '');
  3496.     }
  3497.     rTabSelection = null;
  3498.       
  3499.     let rEP = engagement_panels_();
  3500.     if (rEP && rEP.count > 0) wAttr(ytdFlexyElm, 'userscript-engagement-panel', false);
  3501.     //else wAttr(ytdFlexyElm, 'userscript-engagement-panel', rEP.value + ""); // can be 0
  3502.     else if(rEP.value>0) wAttr(ytdFlexyElm, 'userscript-engagement-panel', rEP.value + ""); // can be 0
  3503.  
  3504.     let ls = 0;
  3505.     ls = flexAttr_toLayoutStatus(ls, 'theater')
  3506.     ls = flexAttr_toLayoutStatus(ls, 'userscript-chat-collapsed')
  3507.     ls = flexAttr_toLayoutStatus(ls, 'userscript-chatblock')
  3508.     ls = flexAttr_toLayoutStatus(ls, 'is-two-columns_')
  3509.     ls = flexAttr_toLayoutStatus(ls, 'tabview-selection')
  3510.     ls = flexAttr_toLayoutStatus(ls, 'fullscreen')
  3511.     ls = flexAttr_toLayoutStatus(ls, 'userscript-engagement-panel')
  3512.  
  3513.     wls.layoutStatus = ls
  3514.  
  3515.     mtoFlexyAttr.bindElement(ytdFlexyElm,{
  3516.       attributes: true,
  3517.       attributeFilter: ['userscript-chat-collapsed', 'userscript-chatblock', 'theater', 'is-two-columns_', 'tabview-selection', 'fullscreen', 'userscript-engagement-panel', 'hidden'],
  3518.       attributeOldValue: true
  3519.     })
  3520.  
  3521.     ytdFlexyHiddenCheckBasic(ytdFlexyElm);
  3522.  
  3523.  
  3524.     let columns = document.querySelector('ytd-page-manager#page-manager #columns')
  3525.     if (columns) {
  3526.       wAttr(columns, 'userscript-scrollbar-render', true);
  3527.     }
  3528.  
  3529.     return false;
  3530.   }
  3531.   
  3532.  
  3533.   function ytdFlexyHiddenCheckBasic(ytdFlexyElm){
  3534.     // for both hidden and non-hidden ytd-watch-flexy
  3535.  
  3536.     deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden');
  3537.  
  3538.    // console.log(15403)
  3539.     document.documentElement.classList.toggle('tabview-normal-player',!deferredVarYTDHidden)
  3540.  
  3541.   }
  3542.  
  3543.   function checkVisibleEngagementPanel(){
  3544.     
  3545.     if(storeLastPanel){
  3546.  
  3547.       let elm_storeLastPanel = kRef(storeLastPanel);
  3548.  
  3549.       if(elm_storeLastPanel && !isDOMVisible(elm_storeLastPanel) ){
  3550.         storeLastPanel=null;
  3551.         ytBtnCloseEngagementPanels();
  3552.       }
  3553.  
  3554.     }
  3555.  
  3556.   }
  3557.  
  3558.   function ytdFlexyHiddenCheck(mutations) {
  3559.  
  3560.     //console.log(15350)
  3561.  
  3562.     const ytdFlexyElm = kRef(ytdFlexy)
  3563.     if (!ytdFlexyElm) return;
  3564.     let muHidden = false
  3565.  
  3566.     for (const mutation of mutations) {
  3567.       if (mutation.attributeName === 'hidden') {
  3568.         //console.log(343)
  3569.         muHidden = true;
  3570.         break;
  3571.       }
  3572.     }
  3573.  
  3574.     if (!muHidden) return;
  3575.     
  3576.  
  3577.     
  3578.     mtc_store= Date.now()+2870
  3579.     //console.log(7004)
  3580.     deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden');
  3581.  
  3582.     
  3583.     if(deferredVarYTDHidden && scheduledCommentRefresh && Q.comments_section_loaded>0){
  3584.       scheduledCommentRefresh=false;
  3585.     } 
  3586.  
  3587.     //console.log(15400)
  3588.     if(!deferredVarYTDHidden){
  3589.       mtf_forceCheckLiveVideo_disable = 0  
  3590.       timeline.setTimeout(function() {
  3591.         mtf_ChatExist();  
  3592.         layoutStatusMutex.lockWith(unlock=>{
  3593.           atChange(); // in case no mutation occurance
  3594.           ytdFlexyHiddenCheckBasic(ytdFlexyElm);
  3595.           dispatchWindowResize(); // player control positioning
  3596.           timeline.setTimeout(unlock, 40);          
  3597.         })        
  3598.       }, 40);
  3599.     }else{
  3600.       //console.log(15401)
  3601.       timeline.setTimeout(function() {
  3602.         //console.log(15402)
  3603.         ytdFlexyHiddenCheckBasic(ytdFlexyElm);
  3604.       }, 40);
  3605.     }
  3606.  
  3607.   }
  3608.  
  3609.  
  3610.  
  3611.  
  3612.   let switchTabActivity_lastTab = null
  3613.  
  3614.   function setDisplayedPlaylist() {
  3615.     //override the default youtube coding event prevention
  3616.     let cssElm = kRef(ytdFlexy);
  3617.     if (!scriptEnable || !cssElm) return;
  3618.     displayedPlaylist = mWeakRef(document.querySelector('ytd-watch-flexy #tab-list:not(.tab-content-hidden) ytd-playlist-panel-renderer') || null);
  3619.   }
  3620.  
  3621.  
  3622.   
  3623.   let recordScrollTop = 0
  3624.  
  3625.   function switchTabActivity(activeLink) {
  3626.     if (!scriptEnable) return;
  3627.  
  3628.     const ytdFlexyElm = kRef(ytdFlexy);
  3629.  
  3630.     if (!ytdFlexyElm) return;
  3631.  
  3632.     if (activeLink && activeLink.classList.contains('tab-btn-hidden')) return; // not allow to switch to hide tab
  3633.  
  3634.     if (isTheater() && isWideScreenWithTwoColumns()) activeLink = null;
  3635.  
  3636.     /*
  3637.     let isPrevTabComments = document.querySelector('.tab-content-cld:not(.tab-content-hidden)');
  3638.     isPrevTabComments=isPrevTabComments&&isPrevTabComments.matches('#tab-comments')
  3639.  
  3640.     if(isPrevTabComments){
  3641.     
  3642.       let comments_tab = document.querySelector('#tab-comments');
  3643.       if(comments_tab){
  3644.         let st = comments_tab.scrollTop;
  3645.         if(st>=0) recordScrollTop = st;
  3646.       }
  3647.  
  3648.  
  3649.     }
  3650.     */
  3651.  
  3652.     function runAtEnd() {
  3653.  
  3654.       
  3655.     //console.log(12312)
  3656.  
  3657.       if (activeLink) lastShowTab = activeLink.getAttribute('userscript-tab-content')
  3658.  
  3659.       displayedPlaylist = null;
  3660.       scrollingVideosList = null;
  3661.  
  3662.       if (activeLink && lastShowTab == '#tab-list') {
  3663.         setDisplayedPlaylist();
  3664.       } else if (activeLink && lastShowTab == '#tab-videos') {
  3665.         scrollingVideosList = mWeakRef(document.querySelector('ytd-watch-flexy #tab-videos:not(.tab-content-hidden) [placeholder-videos]'));
  3666.       }
  3667.  
  3668.  
  3669.       ytdFlexyElm.setAttribute('tabview-selection', activeLink ? lastShowTab : '')
  3670.  
  3671.       if (lastShowTab == '#tab-comments' && (ytdFlexyElm.getAttribute('tabview-youtube-comments') || '').lastIndexOf('S') >= 0) {
  3672.  
  3673.         
  3674.         if(mtf_forceCheckLiveVideo_disable===2) {}
  3675.         else{
  3676.           akAttr(ytdFlexyElm, 'tabview-youtube-comments', false, 'L');
  3677.  
  3678.           /*
  3679.           requestAnimationFrame(() => {
  3680.             let comments_tab = document.querySelector('#tab-comments');
  3681.             if (comments_tab && comments_tab.scrollTop > 0) comments_tab.scrollTop = 0;
  3682.           });
  3683.           */
  3684.         }
  3685.  
  3686.       }
  3687.  
  3688.       /*
  3689.     let isNewTabComments = document.querySelector('.tab-content-cld:not(.tab-content-hidden)')
  3690.     
  3691.     isNewTabComments=isNewTabComments&&isNewTabComments.matches('#tab-comments')
  3692.  
  3693.     if(isNewTabComments){
  3694.       
  3695.       let comments_tab = document.querySelector('#tab-comments');
  3696.       if(comments_tab){
  3697.         let st = comments_tab.scrollTop;
  3698.         if(Math.abs(st-recordScrollTop)>0.9) comments_tab.scrollTop=recordScrollTop;
  3699.       }
  3700.  
  3701.       
  3702.       
  3703.     }
  3704.     */
  3705.  
  3706.  
  3707.     }
  3708.  
  3709.     const links = document.querySelectorAll('#material-tabs a[userscript-tab-content]');
  3710.  
  3711.  
  3712.  
  3713.     for (const link of links) {
  3714.       let content = document.querySelector(link.getAttribute('userscript-tab-content'));
  3715.       if (link && content) {
  3716.         if (link !== activeLink) {
  3717.           link.classList.remove("active");
  3718.           content.classList.add("tab-content-hidden");
  3719.         } else {
  3720.           link.classList.add("active");
  3721.           content.classList.remove("tab-content-hidden");
  3722.           //timeline.setTimeout(()=>content.focus(),400);
  3723.  
  3724.         }
  3725.       }
  3726.     }
  3727.  
  3728.     runAtEnd();
  3729.  
  3730.  
  3731.   }
  3732.  
  3733.  
  3734.   const STORE_VERSION = 1;
  3735.   const STORE_key = 'userscript-tabview-settings';
  3736.   function getStore(){
  3737.     let s = localStorage[STORE_key];
  3738.     function resetStore(){
  3739.       let ret = {
  3740.         version: 1,
  3741.       };
  3742.       localStorage[STORE_key]=JSON.stringify(ret);
  3743.       return ret;
  3744.     }
  3745.     if(!s) return resetStore();
  3746.     let obj = null;
  3747.     try{
  3748.       obj = JSON.parse(s);
  3749.     }catch(e){}
  3750.     return obj && obj.version === STORE_VERSION ? obj : resetStore();
  3751.   }
  3752.  
  3753.   function setStore(obj){
  3754.     if(!obj || typeof obj !=='object') return false;
  3755.     if(obj.version !== STORE_VERSION) return false;
  3756.     localStorage[STORE_key]=JSON.stringify(obj);
  3757.     return true;
  3758.   }
  3759.  
  3760.   let tabsUiScript_setclick = false;
  3761.  
  3762.   function prepareTabBtn() {
  3763.  
  3764.     const materialTab = document.querySelector("#material-tabs")
  3765.     if (!materialTab) return;
  3766.  
  3767.     let noActiveTab = !!document.querySelector('ytd-watch-flexy[userscript-chatblock]:not([userscript-chat-collapsed])')
  3768.  
  3769.     const activeLink = querySelectorFromAnchor.call(materialTab,'a[userscript-tab-content].active:not(.tab-btn-hidden)')
  3770.     if (activeLink) switchTabActivity(noActiveTab ? null : activeLink)
  3771.  
  3772.     if (!tabsUiScript_setclick) {
  3773.       tabsUiScript_setclick = true;
  3774.       $(materialTab).on("click", "a", function(evt) {
  3775.  
  3776.         //console.log(8510)
  3777.         let ytdFlexyElm = kRef(ytdFlexy);
  3778.         if (!scriptEnable || !ytdFlexyElm) return null;
  3779.  
  3780.         if (!this.hasAttribute('userscript-tab-content')) return;
  3781.  
  3782.         if (evt.target.matches('.font-size-btn')) return;
  3783.  
  3784.  
  3785.         evt.preventDefault();
  3786.  
  3787.         //console.log(8511)
  3788.  
  3789. /*
  3790.         if (this.getAttribute('userscript-tab-content') == '#tab-comments' && parseInt(ytdFlexyElm.getAttribute('tabview-youtube-comments') || '') < 0) {
  3791.           
  3792.         console.log(8512)
  3793.           return;
  3794.         }*/
  3795.  
  3796.         //console.log(8513)
  3797.         new Promise(requestAnimationFrame).then(() => {
  3798.  
  3799.  
  3800.           //console.log(8514)
  3801.           layoutStatusMutex.lockWith(unlock => {
  3802.  
  3803.             //console.log(8515)
  3804.             switchTabActivity_lastTab = this.getAttribute('userscript-tab-content');
  3805.  
  3806.             let isActiveAndVisible = this.classList.contains('tab-btn') && this.classList.contains('active') && !this.classList.contains('tab-btn-hidden')
  3807.  
  3808.             if (isWideScreenWithTwoColumns() && !isTheater() && isActiveAndVisible) {
  3809.               //optional
  3810.               timeline.setTimeout(unlock, 80);
  3811.               switchTabActivity(null);
  3812.               ytBtnSetTheater();
  3813.             } else if (isActiveAndVisible) {
  3814.               timeline.setTimeout(unlock, 80);
  3815.               switchTabActivity(null);
  3816.             } else {
  3817.               let pInterval = 60;
  3818.               if (isChatExpand() && isWideScreenWithTwoColumns()) {
  3819.                 ytBtnCollapseChat();
  3820.               } else if (isEngagementPanelExpanded() && isWideScreenWithTwoColumns()) {
  3821.                 ytBtnCloseEngagementPanels();
  3822.               } else if (isWideScreenWithTwoColumns() && isTheater() && !isFullScreen()) {
  3823.                 ytBtnCancelTheater();
  3824.               } else {
  3825.                 pInterval = 20;
  3826.               }
  3827.               //console.log(8518)
  3828.               timeline.setTimeout(() => {
  3829.                 timeline.setTimeout(makeBodyScroll, 20); // this is to make the image render
  3830.  
  3831.                 timeline.setTimeout(() => {
  3832.                   let rightTabs = document.querySelector('#right-tabs');
  3833.                   if (!isWideScreenWithTwoColumns() && rightTabs && rightTabs.offsetTop > 0 && this.classList.contains('active')) {
  3834.                     let tabButtonBar = document.querySelector('#material-tabs');
  3835.                     let tabButtonBarHeight = tabButtonBar ? tabButtonBar.offsetHeight : 0;
  3836.                     window.scrollTo(0, rightTabs.offsetTop - tabButtonBarHeight);
  3837.                   }
  3838.                 }, 60)
  3839.                // console.log(8519)
  3840.  
  3841.                 timeline.setTimeout(unlock, 80)
  3842.                 switchTabActivity(this)
  3843.  
  3844.               }, pInterval);
  3845.             }
  3846.  
  3847.  
  3848.           })
  3849.  
  3850.         })
  3851.  
  3852.  
  3853.  
  3854.  
  3855.       });
  3856.       /*
  3857.  
  3858.       $(materialTab).on("mousedown", ".font-size-btn", function(evt){
  3859.  
  3860.         evt.stopPropagation();
  3861.         evt.stopImmediatePropagation();
  3862.  
  3863.       });
  3864.  
  3865.       $(materialTab).on("pointerdown", ".font-size-btn", function(evt){
  3866.  
  3867.         evt.stopPropagation();
  3868.         evt.stopImmediatePropagation();
  3869.  
  3870.       });
  3871.       
  3872.       $(materialTab).on("mouseup", ".font-size-btn", function(evt){
  3873.  
  3874.         evt.stopPropagation();
  3875.         evt.stopImmediatePropagation();
  3876.  
  3877.       });
  3878.  
  3879.       $(materialTab).on("pointerup", ".font-size-btn", function(evt){
  3880.  
  3881.         evt.stopPropagation();
  3882.         evt.stopImmediatePropagation();
  3883.  
  3884.       });
  3885.       */
  3886.  
  3887.       function updateCSS_fontsize(){
  3888.  
  3889.         let store = getStore();
  3890.         
  3891.         let ytdFlexyElm = kRef(ytdFlexy);
  3892.         if(ytdFlexyElm){
  3893.           if(store['font-size-#tab-info'])
  3894.           ytdFlexyElm.style.setProperty('--ut2257-info', store['font-size-#tab-info'])
  3895.           if(store['font-size-#tab-comments'])
  3896.           ytdFlexyElm.style.setProperty('--ut2257-comments', store['font-size-#tab-comments'])
  3897.           if(store['font-size-#tab-videos'])
  3898.           ytdFlexyElm.style.setProperty('--ut2257-videos', store['font-size-#tab-videos'])
  3899.           if(store['font-size-#tab-list'])
  3900.           ytdFlexyElm.style.setProperty('--ut2257-list', store['font-size-#tab-list'])
  3901.         }
  3902.  
  3903.       }
  3904.  
  3905.       $(materialTab).on("click", ".font-size-btn", function(evt){
  3906.  
  3907.         evt.preventDefault();
  3908.         evt.stopPropagation();
  3909.         evt.stopImmediatePropagation();
  3910.  
  3911.         let value = evt.target.matches('.font-size-plus')?1: evt.target.matches('.font-size-minus')?-1 :0;
  3912.  
  3913.         let active_tab_content = evt.target.closest('[userscript-tab-content]').getAttribute('userscript-tab-content'); 
  3914.  
  3915.         let store = getStore();
  3916.         let settingKey = `font-size-${active_tab_content}`
  3917.         if(!store[settingKey]) store[settingKey] = 1.0;
  3918.         if(value<0) store[settingKey] -= 0.05;
  3919.         if(value>0) store[settingKey] += 0.05;
  3920.         setStore(store);
  3921.  
  3922.  
  3923.         updateCSS_fontsize();
  3924.  
  3925.  
  3926.         //console.log(this.textContent)
  3927.  
  3928.  
  3929.       });
  3930.  
  3931.       updateCSS_fontsize();
  3932.  
  3933.  
  3934.  
  3935.     }
  3936.  
  3937.   }
  3938.  
  3939.  
  3940.   // ---------------------------------------------------------------------------------------------
  3941.   document.addEventListener("yt-navigate-finish", onNavigationEnd)
  3942.   //yt-navigate-redirect
  3943.   //"yt-page-data-fetched"
  3944.   //yt-navigate-error
  3945.   //yt-navigate-start
  3946.   //yt-page-manager-navigate-start
  3947.   //"yt-navigate"
  3948.   //"yt-navigate-cache
  3949.  
  3950.   document.addEventListener("yt-navigate-cache",()=>{
  3951.     console.log('yt-navigate-cache')
  3952.   })
  3953.   document.addEventListener("yt-navigate-redirect",()=>{
  3954.     console.log('yt-navigate-redirect')
  3955.   })
  3956.  
  3957.   function onReady(){
  3958.     //might be earlier than yt-navigation-finish
  3959.     console.log('html-onReady')
  3960.     if(location.pathname=='/watch') script_inject_js1.inject();
  3961.   }
  3962.  
  3963.   if(document.readyState!=='loading'){
  3964.     onReady();
  3965.   }else{
  3966.     document.addEventListener('DOMContentLoaded', onReady)
  3967.   }
  3968.  
  3969.   function forceConfig(){
  3970.     
  3971.     let trial = false;
  3972.     
  3973. /*
  3974.     let f=()=>{
  3975.       if(trial) return;
  3976.       let b = true;
  3977.       try{
  3978.         document.dispatchEvent(new CustomEvent("me-func"))
  3979.         window.yt.config_.EXPERIMENT_FLAGS.kevlar_watch_metadata_refresh=true
  3980.       }catch(e){
  3981.         b=false;
  3982.       }
  3983.       if(b) trial = true;
  3984.     }
  3985.     f();
  3986.     requestAnimationFrame(f)
  3987.     setTimeout(f,30)
  3988.     setTimeout(f,300)
  3989. */
  3990.     
  3991.     
  3992.   }
  3993.  
  3994.   document.addEventListener("yt-navigate-start",()=>{
  3995.     console.log('yt-navigate-start') // not always trigger before navigate-end
  3996.     script_inject_js1.inject();
  3997.     forceConfig();
  3998.   })
  3999.  
  4000.   document.addEventListener("yt-page-manager-navigate-start",()=>{
  4001.     console.log('yt-page-manager-navigate-start')
  4002.     forceConfig();
  4003.   })
  4004.  
  4005.  
  4006.   document.addEventListener("loadstart", (evt) => {
  4007.     if (!evt || !evt.target || evt.target.nodeName !== "VIDEO") return;
  4008.     let elm = evt.target;
  4009.     if (!elm.matches('#player video, #movie_player video, video[tabview-mainvideo]')) return;
  4010.  
  4011.     
  4012.     mtc_store= Date.now()+2870
  4013.  
  4014.     let src = elm.src;
  4015.     if (src !== lastVideoURL) {
  4016.       lastVideoURL = elm.src;
  4017.       elm.setAttribute('tabview-mainvideo', ''); // mainly for mini playing
  4018.     }
  4019.  
  4020.   }, true)
  4021.  
  4022.   // ---------------------------------------------------------------------------------------------
  4023.  
  4024.   let scrolling_lastD = 0;
  4025.  
  4026.   const singleColumnScrolling = function(/** @type {boolean} */  scrolling_lastF) {
  4027.     
  4028.     if (!scriptEnable || deferredVarYTDHidden) return;
  4029.  
  4030.     let pageY = scrollY;
  4031.     if (pageY < 10 && scrolling_lastD === 0 && !scrolling_lastF) return;
  4032.  
  4033.     let targetElm, header, navElm;
  4034.  
  4035.     Promise.resolve().then(() => {
  4036.  
  4037.       targetElm = document.querySelector("#right-tabs");
  4038.       if (!targetElm) return;
  4039.       header = querySelectorFromAnchor.call(targetElm,"header");
  4040.       if (!header) return;
  4041.       navElm = document.querySelector('#masthead-container, #masthead')
  4042.       if (!navElm) return;
  4043.       let navHeight = navElm ? navElm.offsetHeight : 0
  4044.  
  4045.       let elmY = targetElm.offsetTop
  4046.  
  4047.       let xyz = [elmY + navHeight, pageY, elmY - navHeight]
  4048.  
  4049.       let xyStatus = 0
  4050.       if (xyz[1] < xyz[2] && xyz[2] < xyz[0]) {
  4051.         // 1
  4052.         xyStatus = 1
  4053.       }
  4054.  
  4055.       if (xyz[0] > xyz[1] && xyz[1] > xyz[2]) {
  4056.  
  4057.         //2
  4058.         xyStatus = 2
  4059.  
  4060.       }
  4061.  
  4062.       if (xyz[2] < xyz[0] && xyz[0] < xyz[1]) {
  4063.         // 3
  4064.  
  4065.         xyStatus = 3
  4066.  
  4067.  
  4068.       }
  4069.  
  4070.       return xyStatus;
  4071.  
  4072.     }).then((xyStatus) => {
  4073.  
  4074.       if ((xyStatus == 2 || xyStatus == 3) && (scrolling_lastD === 0 || scrolling_lastF)) {
  4075.         scrolling_lastD = 1;
  4076.         let {
  4077.           offsetHeight
  4078.         } = header
  4079.         let {
  4080.           offsetWidth
  4081.         } = targetElm
  4082.  
  4083.         targetElm.style.setProperty("--userscript-sticky-width", offsetWidth + 'px')
  4084.         targetElm.style.setProperty("--userscript-sticky", offsetHeight + 'px')
  4085.  
  4086.         wAttr(targetElm, 'userscript-sticky', true);
  4087.  
  4088.       } else if ((xyStatus == 1) && (scrolling_lastD === 1 || scrolling_lastF)) {
  4089.         scrolling_lastD = 0;
  4090.  
  4091.         wAttr(targetElm, 'userscript-sticky', false);
  4092.       }
  4093.  
  4094.  
  4095.       targetElm = null;
  4096.       header = null;
  4097.       navElm = null;
  4098.  
  4099.     });
  4100.  
  4101.   };
  4102.  
  4103.   window.addEventListener("scroll", function() {
  4104.     singleColumnScrolling(false)
  4105.   }, {
  4106.     capture: false,
  4107.     passive: true
  4108.   })
  4109.  
  4110.   let lastResizeAt = 0;
  4111.   window.addEventListener('resize', function() {
  4112.  
  4113.     if (!scriptEnable) return;
  4114.     if (deferredVarYTDHidden) return;
  4115.     lastResizeAt = Date.now();
  4116.  
  4117.     requestAnimationFrame(() => {
  4118.       singleColumnScrolling(true)
  4119.     })
  4120.  
  4121.   }, {
  4122.     capture: false,
  4123.     passive: true
  4124.   })
  4125.  
  4126.  
  4127.  
  4128.   
  4129.   let hist = null
  4130.   const getHistState = (history)=>`${history.length}|${history.state?history.state.entryTime:null}`;
  4131.   function newVideoPageCheck(){
  4132.     let hState = getHistState(history)
  4133.     if(hist!==hState) {
  4134.       hist=hState;
  4135.       if(scriptEnable){
  4136.         //scriptEnable = false;
  4137.         let callTimeout = !newVideoPage.entryTime
  4138.         newVideoPage.entryTime = 1
  4139.         if(callTimeout) setTimeout(newVideoPage,0)
  4140.         
  4141.       }
  4142.       return true;
  4143.     }
  4144.   }
  4145.   function newVideoPage(){
  4146.     newVideoPage.entryTime = 0;
  4147.  
  4148.     console.log('newVideoPage')
  4149.     
  4150.     //console.log('newVideoPage-', 150, location.href)
  4151.  
  4152.     let ytdFlexyElm = kRef(ytdFlexy);
  4153.     if(!ytdFlexyElm) return;
  4154.  
  4155.     timeline.reset();
  4156.     layoutStatusMutex = new Mutex();
  4157.  
  4158.     //console.log('newVideoPage-', 350, location.href)
  4159.     
  4160.     let flag1= /^https?\:\/\/(\w+\.)*youtube\.com\/watch\?(\w+\=[^\/\?\&]+\&|\w+\=?\&)*v=[\w\-\_]+/.test(location.href)
  4161.     let tf = ()=>{
  4162.  
  4163.       let isFlexyHidden = (deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden'));
  4164.  
  4165.       let flag2 = !isFlexyHidden;
  4166.  
  4167.       if(flag1^flag2) return timeline.setTimeout(tf,7); else funcVisibleWatch();
  4168.  
  4169.       tf= null;
  4170.       funcVisibleWatch = null;
  4171.       ytdFlexyElm=null
  4172.  
  4173.     }
  4174.  
  4175.     let funcVisibleWatch = ()=>{
  4176.       
  4177.       //scriptEnable = true;
  4178.  
  4179.       let isFlexyHidden = (deferredVarYTDHidden = ytdFlexyElm.hasAttribute('hidden'));
  4180.       ytdFlexyHiddenCheckBasic(ytdFlexyElm)
  4181.  
  4182.       if(!isFlexyHidden) {
  4183.  
  4184.         mtf_forceCheckLiveVideo_disable = 0;
  4185.         mtc_store= Date.now()+2870
  4186.  
  4187.         sect_lastUpdate = 0;
  4188.         if(pendingOne){
  4189.           // reset pendingOne = false if the element is already removed.
  4190.           pendingOne = document.querySelectorAll(`ytd-watch-flexy ytd-comments#comments [tabview-cache-time]`).length>1;
  4191.         }
  4192.  
  4193.         timeline.setTimeout(()=>{
  4194.           Q.mutationTarget=null;
  4195.           FP.mtf_attrComments()
  4196.         },2870)
  4197.     
  4198.         if(pageInit_attrComments) hookSection();
  4199.  
  4200.  
  4201.  
  4202.  
  4203.  
  4204.         
  4205.         let new_layoutStatus = wls.layoutStatus 
  4206.  
  4207.         const new_isExpandedChat = !(new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  4208.         const new_isCollaspedChat = (new_layoutStatus & LAYOUT_CHATROOM_COLLASPED) && (new_layoutStatus & LAYOUT_CHATROOM)
  4209.     
  4210.         const new_isTwoColumns = new_layoutStatus & LAYOUT_TWO_COLUMNS;
  4211.         const new_isTheater = new_layoutStatus & LAYOUT_THEATER;
  4212.         const new_isTabExpanded = new_layoutStatus & LAYOUT_TAB_EXPANDED;
  4213.         const new_isFullScreen = new_layoutStatus & LAYOUT_FULLSCREEN;
  4214.         const new_isExpandEPanel = new_layoutStatus & LAYOUT_ENGAGEMENT_PANEL_EXPAND;
  4215.  
  4216.         if( ytdFlexyElm.getAttribute('tabview-selection')==='' && new_isTwoColumns && !new_isTheater && !new_isTabExpanded && !new_isFullScreen && !new_isExpandEPanel && !new_isExpandedChat ){
  4217.           // e.g. engage panel removed after miniview and change video
  4218.           setToActiveTab();
  4219.         }else if(new_isExpandEPanel && querySelectorAllFromAnchor.call(ytdFlexyElm,'ytd-engagement-panel-section-list-renderer[visibility="ENGAGEMENT_PANEL_VISIBILITY_EXPANDED"]').length===0){
  4220.           wls.layoutStatus = new_layoutStatus & (~LAYOUT_ENGAGEMENT_PANEL_EXPAND)
  4221.         }
  4222.  
  4223.         //mtf_attrFlexy();
  4224.  
  4225.         FP.mtf_attrEngagementPanel();
  4226.       
  4227.         FP.mtf_attrPlaylist();
  4228.       
  4229.         FP.mtf_attrComments();   
  4230.       
  4231.         FP.mtf_attrChatroom();
  4232.  
  4233.  
  4234.       }
  4235.  
  4236.       regularCheck(1,0,null); // mutation happens when the page is not ready; call again as the page is ready.
  4237.  
  4238.  
  4239.  
  4240.       
  4241.  
  4242.     }
  4243.     
  4244.  
  4245.     
  4246.     tf();
  4247.     
  4248.  
  4249.  
  4250.   }
  4251.  
  4252.  
  4253.  
  4254.   function browserHistoryState(){
  4255.     let maxCount = 5
  4256.  
  4257.     if (!scriptEnable) return;
  4258.     
  4259.     let ytdFlexyElm = kRef(ytdFlexy);
  4260.     if(!ytdFlexyElm) return;
  4261.  
  4262.     let cid = timeline.setInterval(function(){
  4263.       if(newVideoPageCheck()){
  4264.         timeline.clearInterval(cid);
  4265.       }
  4266.       if(--maxCount===0) timeline.clearInterval(cid);
  4267.     },7)
  4268.  
  4269.   }
  4270.  
  4271.  
  4272.   window.addEventListener('hashchange', function() {
  4273.     if (!scriptEnable) return;
  4274.     console.log('hashchange');
  4275.     browserHistoryState();
  4276.   }, { capture: true })
  4277.  
  4278.   window.addEventListener('popstate', function() {
  4279.     if (!scriptEnable) return;
  4280.     console.log('popstate');
  4281.     browserHistoryState();
  4282.   }, { capture: true })
  4283.  
  4284.  
  4285.   // function clearMutationObserver(o, key) {
  4286.   //   if (o[key]) {
  4287.   //     o[key].takeRecords();
  4288.   //     o[key].disconnect();
  4289.   //     o[key] = null;
  4290.   //     return true;
  4291.   //   }
  4292.   // }
  4293.  
  4294.   // function initMutationObserver(o, key, callback) {
  4295.   //   clearMutationObserver(o, key);
  4296.   //   const mto = new MutationObserver(callback);
  4297.   //   o[key] = mto;
  4298.   //   return mto;
  4299.   // }
  4300.   // function initMutationObserver2(o, key, mtoFunc) {
  4301.   //   clearMutationObserver(o, key);
  4302.   //   const mto = mtoFunc();
  4303.   //   o[key] = mto;
  4304.   //   return mto;
  4305.   // }
  4306.  
  4307.   document.addEventListener('wheel', function(evt) {
  4308.  
  4309.     if (!scriptEnable) return;
  4310.     const displayedPlaylist_element = kRef(displayedPlaylist);
  4311.     if (displayedPlaylist_element && displayedPlaylist_element.contains(evt.target)) {
  4312.       evt.stopPropagation();
  4313.       evt.stopImmediatePropagation();
  4314.     }
  4315.   }, { capture: true, passive: true });
  4316.  
  4317.  
  4318.   function setVideosTwoColumns(/** @type {number} */ flag, /** @type {boolean} */ bool) {
  4319.  
  4320.     //two columns to one column
  4321.  
  4322.     /*
  4323.         [placeholder-videos] ytd-watch-next-secondary-results-renderer.style-scope.ytd-watch-flexy
  4324.  
  4325.         is-two-columns =""  => no is-two-columns
  4326.         
  4327.         
  4328.         
  4329.         [placeholder-videos] tp-yt-paper-spinner#spinner.style-scope.ytd-continuation-item-renderer
  4330.         
  4331.         no hidden => hidden =""
  4332.         
  4333.         
  4334.         [placeholder-videos] div#button.style-scope.ytd-continuation-item-renderer
  4335.         
  4336.         
  4337.         hidden ="" => no hidden
  4338.         
  4339.  
  4340.         */
  4341.  
  4342.     let cssSelector1 = '[placeholder-videos] ytd-watch-next-secondary-results-renderer.style-scope.ytd-watch-flexy'
  4343.  
  4344.     let cssSelector2 = '[placeholder-videos] tp-yt-paper-spinner#spinner.style-scope.ytd-continuation-item-renderer'
  4345.  
  4346.     let cssSelector3 = '[placeholder-videos] div#button.style-scope.ytd-continuation-item-renderer'
  4347.  
  4348.     let res = {}
  4349.     if (flag & 1) {
  4350.       res.m1 = document.querySelector(cssSelector1)
  4351.       if (res.m1) wAttr(res.m1, 'is-two-columns', bool ? '' : false);
  4352.     }
  4353.  
  4354.     if (flag & 2) {
  4355.       res.m2 = document.querySelector(cssSelector2)
  4356.       if (res.m2) wAttr(res.m2, 'hidden', bool ? false : '');
  4357.     }
  4358.  
  4359.     if (flag & 4) {
  4360.       res.m3 = document.querySelector(cssSelector3)
  4361.       if (res.m3) wAttr(res.m3, 'hidden', bool ? '' : false);
  4362.     }
  4363.  
  4364.  
  4365.     return res
  4366.  
  4367.  
  4368.  
  4369.  
  4370.   }
  4371.  
  4372.   let lastScrollFetch = 0;
  4373.   // function isScrolledToEnd(){
  4374.   //     return (window.innerHeight + window.pageYOffset) >= document.scrollingElement.scrollHeight - 2;
  4375.   // }
  4376.   let lastOffsetTop = 0;
  4377.   window.addEventListener('scroll', function(evt) {
  4378.  
  4379.     //console.log(evt.target)
  4380.  
  4381.     if (!scriptEnable) return;
  4382.  
  4383.  
  4384.     if (!kRef(scrollingVideosList)) return;
  4385.     if (videoListBeforeSearch) return;
  4386.  
  4387.  
  4388.  
  4389.     let visibleHeight = document.scrollingElement.clientHeight;
  4390.     let totalHeight = document.scrollingElement.scrollHeight;
  4391.  
  4392.     if (totalHeight < visibleHeight * 1.5) return; // filter out two column view;
  4393.  
  4394.     let z = window.pageYOffset + visibleHeight;
  4395.     let h_advanced = totalHeight - (visibleHeight > 5 * 40 ? visibleHeight * 0.5 : 40);
  4396.  
  4397.  
  4398.  
  4399.     if (z > h_advanced && !isWideScreenWithTwoColumns()) {
  4400.  
  4401.       let ct = Date.now();
  4402.       if (ct - lastScrollFetch < 500) return; //prevent continuous calling
  4403.  
  4404.       lastScrollFetch = ct;
  4405.  
  4406.       let res = setVideosTwoColumns(2 | 4, true)
  4407.       if (res.m3 && res.m2) {
  4408.  
  4409.         //wait for DOM change, just in case
  4410.         requestAnimationFrame(() => {
  4411.           let { offsetTop } = res.m2 // as visibility of m2 & m3 switched.
  4412.  
  4413.           if (offsetTop - lastOffsetTop < 40) return; // in case bug, or repeating calling.  // the next button shall below the this button 
  4414.           lastOffsetTop = offsetTop
  4415.  
  4416.           res.m2.parentNode.dispatchEvent(new Event('yt-service-request-sent-button-renderer'))
  4417.  
  4418.           res = null
  4419.         })
  4420.  
  4421.       } else {
  4422.  
  4423.         res = null
  4424.       }
  4425.  
  4426.  
  4427.     }
  4428.  
  4429.  
  4430.  
  4431.  
  4432.   }, { passive: true })
  4433.  
  4434.   let sect_lastUpdate = 0;
  4435.  
  4436.   let sect_holder = null;
  4437.   let sect_hText = null;
  4438.   let sect_hTime = 0;
  4439.  
  4440.   let pendingOne = false;
  4441.   let mtf_forceCheckLiveVideo_disable = 0;
  4442.  
  4443.   let storeLastPanel = null;
  4444.  
  4445.   /** @type {boolean | null} */
  4446.   let deferredVarYTDHidden = null;
  4447.   let scheduledCommentRefresh = false;
  4448.  
  4449.   let pageInit_attrComments = false;
  4450.  
  4451.  
  4452.  
  4453.   let mgChatFrame = {
  4454.     setVar(elm) {
  4455.       mgChatFrame.kVar = mWeakRef(elm)
  4456.     },
  4457.     getVar() {
  4458.       return kRef(mgChatFrame.kVar)
  4459.     },
  4460.     inPage() {
  4461.       let elm = mgChatFrame.getVar();
  4462.       if (!elm) return false;
  4463.       let ytdFlexyElm = kRef(ytdFlexy);
  4464.       if(!ytdFlexyElm) return false;
  4465.       return ytdFlexyElm.contains(elm)
  4466.     }
  4467.   };
  4468.  
  4469.   const timeline = {
  4470.     // after initialized (initObserver)
  4471.     cn1:{},
  4472.     cn2:{},
  4473.     setTimeout( /** @type {TimerHandler} */ f,/** @type {number} */ d){
  4474.       return timeline.cn1[setTimeout(f,d)]=true
  4475.     },
  4476.     clearTimeout(/** @type {number} */ cid){
  4477.       timeline.cn1[cid]=false; return clearTimeout(cid)
  4478.     },
  4479.     setInterval(/** @type {TimerHandler} */ f,/** @type {number} */ d){
  4480.       return timeline.cn2[setInterval(f,d)]=true
  4481.     },
  4482.     clearInterval(/** @type {number} */ cid){
  4483.       timeline.cn2[cid]=false; return clearInterval(cid)
  4484.     },
  4485.     reset(){
  4486.       for(let cid in timeline.cn1) timeline.cn1[cid] && clearTimeout(cid)
  4487.       for(let cid in timeline.cn2) timeline.cn2[cid] && clearInterval(cid)
  4488.       timeline.cn1={}
  4489.       timeline.cn2={}
  4490.     }
  4491.   }
  4492.  
  4493.   class AttributeMutationObserver extends MutationObserver {
  4494.     constructor(flist){
  4495.       super((mutations, observer)=>{
  4496.         for(const mutation of mutations){
  4497.           if (mutation.type === 'attributes') {
  4498.             this.checker(mutation.target, mutation.attributeName)
  4499.           }
  4500.         }
  4501.       })
  4502.       this.flist=flist;
  4503.       this.res={}
  4504.     }
  4505.     
  4506.     takeRecords(){
  4507.       super.takeRecords();
  4508.     }
  4509.     disconnect(){
  4510.       this._target = null;
  4511.       super.disconnect();
  4512.     }
  4513.     observe(/** @type {Node} */ target){
  4514.       if(this._target) return; 
  4515.       this._target = mWeakRef(target);
  4516.       const options = {
  4517.         attributes: true,
  4518.         attributeFilter: Object.keys(this.flist),
  4519.         //attributeFilter: [ "status", "username" ],
  4520.         attributeOldValue: true
  4521.       }
  4522.       super.observe(target, options)
  4523.     }
  4524.     checker(/** @type {Node} */ target,/** @type {string} */ attributeName){
  4525.       let nv = target.getAttribute(attributeName);
  4526.       if(this.res[attributeName]!==nv){
  4527.         this.res[attributeName] = nv
  4528.         let f = this.flist[attributeName];
  4529.         if(f) f(attributeName, nv);
  4530.  
  4531.       }
  4532.     }
  4533.     check(delay = 0){
  4534.       setTimeout(()=>{
  4535.         let target = kRef(this._target)
  4536.         for(const key of Object.keys(this.flist)){
  4537.           this.checker(target,key)
  4538.         }
  4539.         target = null;
  4540.       },delay)
  4541.     }
  4542.   } 
  4543.  
  4544.   function goYoutubeGeniusLyrics(){
  4545.  
  4546.     setTimeout(function $f(){
  4547.  
  4548.       if(!document.documentElement.hasAttribute('w-engagement-panel-genius-lyrics')) return setTimeout($f,100)
  4549.  
  4550.       document.documentElement.dispatchEvent(new CustomEvent('engagement-panel-genius-lyrics'))
  4551.  
  4552.  
  4553.     },100)
  4554.  
  4555.  
  4556.  
  4557.   }
  4558.  
  4559.  
  4560.   /*
  4561.  
  4562.   To be implement: timeline
  4563.  
  4564.   timeline.setTimeout
  4565.   timeline.clearTimeout
  4566.   timeline.setInterval
  4567.   timeline.clearInterval
  4568.  
  4569.   */
  4570.  
  4571.  
  4572.  
  4573.   //Object.keys($0).filter(key=>!(key in $0.constructor.prototype))
  4574.  
  4575.   //Object.getOwnPropertyNames(window).filter(k=>k.startsWith('HTML'))
  4576.   //Object.getOwnPropertyNames(window).filter(k=>k.startsWith('HTML')).filter(k=>$0 instanceof window[k])
  4577.  
  4578.  
  4579.   /* --------------------------- browser's bug in -webkit-box ----------------------------------------- */
  4580.  
  4581.   /*
  4582.    fix bug for comment section - version 1.8.7 
  4583.   This issue is the bug in browser's rendering
  4584.    I guess, this is due to the lines clamp with display:-webkit-box 
  4585.    use stupid coding to let it re-render when its content become visible
  4586.    
  4587.   /*
  4588.  
  4589.   ytd-expander[should-use-number-of-lines][collapsed] > #content.ytd-expander {
  4590.       color: var(--yt-spec-text-primary);
  4591.       display: -webkit-box;
  4592.       overflow: hidden;
  4593.       max-height: none;
  4594.       -webkit-box-orient: vertical;
  4595.       -webkit-line-clamp: var(--ytd-expander-max-lines, 4);
  4596.   }
  4597.  
  4598.   // v1.8.36 imposed a effective solution for fixing this bug
  4599.  
  4600.   */
  4601.  
  4602.   /* --------------------------- browser's bug in -webkit-box ----------------------------------------- */
  4603.  
  4604.  
  4605.   /**
  4606.    * 
  4607.  
  4608.  
  4609. f.initChildrenObserver=function(){var a=this;this.observer=new MutationObserver(function(){return a.childrenChanged()});
  4610. this.observer.observe(this.$.content,{subtree:!0,childList:!0,attributes:!0});this.childrenChanged()};
  4611. f.childrenChanged=function(){var a=this;this.alwaysToggleable?this.canToggle=this.alwaysToggleable:this.canToggleJobId||(this.canToggleJobId=window.requestAnimationFrame(function(){$h(function(){a.canToggleJobId=0;a.calculateCanCollapse()})}))};
  4612.  
  4613.  
  4614. f.onIronResize=function(){this.recomputeOnResize&&this.childrenChanged()};
  4615.  
  4616.  
  4617. onButtonClick_:function(){this.fire("yt-close-upsell-dialog")},
  4618. computeHasHeader_:function(a){return!!a.headerBackgroundImage}});var geb;var heb;var ieb;var jeb;var xI=function(){var a=L.apply(this,arguments)||this;a.alignAuto=!1;a.collapsed=!0;a.isToggled=!1;a.alwaysCollapsed=!1;a.canToggle=!0;a.collapsedHeight=80;a.disableToggle=!1;a.alwaysToggleable=!1;a.reversed=!1;a.shouldUseNumberOfLines=!1;a.recomputeOnResize=!1;a.canToggleJobId=0;return a};
  4619. n(xI,L);f=xI.prototype;f.alwaysToggleableChanged=function(){this.alwaysToggleable&&(this.canToggle=!0)};
  4620.  
  4621.  
  4622. f.calculateCanCollapse=function(){this.canToggle=this.shouldUseNumberOfLines?this.alwaysToggleable||this.$.content.offsetHeight<this.$.content.scrollHeight:this.alwaysToggleable||this.$.content.scrollHeight>this.collapsedHeight};
  4623. f.detachObserver=function(){this.observer&&this.observer.disconnect()};
  4624.  
  4625.    * 
  4626.    * 
  4627.    * 
  4628.    */
  4629.  
  4630.  
  4631.  
  4632.  
  4633. })();
  4634.  
  4635.  
  4636.  
  4637.  
  4638.  
  4639.  
  4640.  
  4641.  
  4642.  
  4643.  
  4644.  
  4645.  
  4646.  
  4647.  
  4648.  
  4649.  
  4650.  
  4651.  
  4652.  
  4653.  
  4654.  
  4655.  
  4656.  
  4657.  
  4658.  
  4659.  
  4660.  
  4661.  
  4662.  
  4663.  
  4664.  
  4665.  
  4666.  
  4667.  
  4668.  
  4669.  
  4670.  
  4671.  
  4672.  
  4673.  
  4674.  
  4675.  
  4676.     // https://github.com/cyfung1031/Tabview-Youtube/raw/main/js/content.js
  4677.  
  4678. }
  4679.  
  4680.  
  4681. ;!(function $$() {
  4682.     'use strict';
  4683.  
  4684.     if(document.documentElement==null) return window.requestAnimationFrame($$)
  4685.  
  4686.     const cssTxt = GM_getResourceText("contentCSS");
  4687.  
  4688.     function addStyle (styleText) {
  4689.       const styleNode = document.createElement('style');
  4690.       styleNode.type = 'text/css';
  4691.       styleNode.textContent = styleText;
  4692.       document.documentElement.appendChild(styleNode);
  4693.       return styleNode;
  4694.     }
  4695.  
  4696.     addStyle (cssTxt);
  4697.  
  4698.     main(window.$);
  4699.  
  4700.  
  4701.     // Your code here...
  4702. })();