// ==UserScript== // @name YouTube Super Fast Chat // @version 0.10.2 // @license MIT // @name:ja YouTube スーパーファーストチャット // @name:zh-TW YouTube 超快聊天 // @name:zh-CN YouTube 超快聊天 // @namespace UserScript // @match https://www.youtube.com/live_chat* // @author CY Fung // @require https://greasyfork.org/scripts/465819-api-for-customelements-in-youtube/code/API%20for%20CustomElements%20in%20YouTube.js?version=1215280 // @run-at document-start // @grant none // @unwrap // @allFrames true // @inject-into page // // @description Ultimate Performance Boost for YouTube Live Chats // @description:ja YouTubeのライブチャットの究極のパフォーマンスブースト // @description:zh-TW YouTube直播聊天的終極性能提升 // @description:zh-CN YouTube直播聊天的终极性能提升 // // @downloadURL none // ==/UserScript== ((__CONTEXT__) => { 'use strict'; const ENABLE_REDUCED_MAXITEMS_FOR_FLUSH = true; const MAX_ITEMS_FOR_TOTAL_DISPLAY = 90; const MAX_ITEMS_FOR_FULL_FLUSH = 25; const ENABLE_NO_SMOOTH_TRANSFORM = true; const USE_OPTIMIZED_ON_SCROLL_ITEMS = true; const USE_WILL_CHANGE_CONTROLLER = false; let cssText1 = ''; let cssText2 = ''; let cssText3 = ''; let cssText4 = ''; let cssText5 = ''; let cssText6 = ''; let cssText7 = ''; function dr(s) { // reserved for future use return s; // return window.deWeakJS ? window.deWeakJS(s) : s; } if (ENABLE_NO_SMOOTH_TRANSFORM) { cssText3 = ` #item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer { position: static !important; } ` cssText4 = ` /* optional */ #item-offset.style-scope.yt-live-chat-item-list-renderer { height: auto !important; min-height: unset !important; } #items.style-scope.yt-live-chat-item-list-renderer { transform: translateY(0px) !important; } /* optional */ ` } if (1) { cssText5 = ` /* ------------------------------------------------------------------------------------------------------------- */ yt-live-chat-author-chip #chat-badges.yt-live-chat-author-chip, yt-live-chat-author-chip #chat-badges.yt-live-chat-author-chip yt-live-chat-author-badge-renderer, yt-live-chat-author-chip #chat-badges.yt-live-chat-author-chip yt-live-chat-author-badge-renderer #image, yt-live-chat-author-chip #chat-badges.yt-live-chat-author-chip yt-live-chat-author-badge-renderer #image img { contain: layout style; } #items.style-scope.yt-live-chat-item-list-renderer { contain: layout paint style; } #item-offset.style-scope.yt-live-chat-item-list-renderer { contain: style; } #item-scroller.style-scope.yt-live-chat-item-list-renderer { contain: size style; } #contents.style-scope.yt-live-chat-item-list-renderer, #chat.style-scope.yt-live-chat-renderer, img.style-scope.yt-img-shadow[width][height] { contain: size layout paint style; } .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label], .style-scope.yt-live-chat-ticker-renderer[role="button"][aria-label] > #container { contain: layout paint style; } yt-live-chat-text-message-renderer.style-scope.yt-live-chat-item-list-renderer, yt-live-chat-membership-item-renderer.style-scope.yt-live-chat-item-list-renderer, yt-live-chat-paid-message-renderer.style-scope.yt-live-chat-item-list-renderer, yt-live-chat-banner-manager.style-scope.yt-live-chat-item-list-renderer { contain: layout style; } tp-yt-paper-tooltip[style*="inset"][role="tooltip"] { contain: layout paint style; } /* ------------------------------------------------------------------------------------------------------------- */ ` } if (1) { cssText6 = ` yt-icon[icon="down_arrow"] > *, yt-icon-button#show-more > * { pointer-events: none !important; } #continuations, #continuations * { contain: strict; position: fixed; top: 2px; height: 1px; width: 2px; height: 1px; visibility: collapse; } yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer{ top: 4px; transition-property: top; bottom: unset; } yt-live-chat-renderer[has-action-panel-renderer] #show-more.yt-live-chat-item-list-renderer[disabled]{ top: -42px; } html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer:not(:empty) { --yt-live-chat-action-panel-top-border: none; } html #panel-pages.yt-live-chat-renderer > #input-panel.yt-live-chat-renderer.iron-selected > *:first-child { border-top: 1px solid var(--yt-live-chat-panel-pages-border-color); } html #panel-pages.yt-live-chat-renderer { border-top: 0; border-bottom: 0; } #input-panel #picker-buttons yt-live-chat-icon-toggle-button-renderer#product-picker { /* overflow: hidden; contain: layout paint style; */ contain: layout style; } #chat.yt-live-chat-renderer ~ #panel-pages.yt-live-chat-renderer { overflow: visible; } ` } if (1) { cssText7 = ` .ytp-contextmenu[class], .toggle-button.tp-yt-paper-toggle-button[class], .yt-spec-touch-feedback-shape__fill[class], .fill.yt-interaction[class], .ytp-videowall-still-info-content[class], .ytp-suggestion-image[class] { will-change: unset !important; } img { content-visibility: visible !important; } yt-img-shadow[height][width], yt-img-shadow { content-visibility: visible !important; } yt-live-chat-item-list-renderer:not([allow-scroll]) #item-scroller.yt-live-chat-item-list-renderer { overflow-y: scroll; padding-right: 0; } ` } function addCssElement() { let s = document.createElement('style') s.id = 'ewRvC'; return s; } const addCss = () => document.head.appendChild(dr(addCssElement())).textContent = ` @supports (contain:layout paint style) and (content-visibility:auto) and (contain-intrinsic-size:auto var(--wsr94)) { ${cssText1} } @supports (contain:layout paint style) { ${cssText2} ${cssText5} } @supports (color: var(--general)) { ${cssText3} ${cssText7} ${cssText4} ${cssText6} .no-anchor * { overflow-anchor: none; } .no-anchor > item-anchor { overflow-anchor: auto; } item-anchor { height:1px; width: 100%; transform: scaleY(0.00001); transform-origin:0 0; contain: strict; opacity:0; display:flex; position:relative; flex-shrink:0; flex-grow:0; margin-bottom:0; overflow:hidden; box-sizing:border-box; visibility: visible; content-visibility: visible; contain-intrinsic-size: auto 1px; pointer-events:none !important; } #item-scroller.style-scope.yt-live-chat-item-list-renderer[class] { overflow-anchor: initial !important; } html item-anchor { height: 1px; width: 1px; top:auto; left:auto; right:auto; bottom:auto; transform: translateY(-1px); position: absolute; z-index:-1; } @keyframes dontRenderAnimation { 0% { background-position-x: 3px; } 100% { background-position-x: 4px; } } /*html[dont-render-enabled] */ .dont-render{ visibility: collapse !important; transform: scale(0.01) !important; transform: scale(0.00001) !important; transform: scale(0.0000001) !important; transform-origin:0 0 !important; z-index:-1 !important; contain: strict !important; box-sizing: border-box !important; height:1px !important; height:0.1px !important; height:0.01px !important; height:0.0001px !important; height:0.000001px !important; animation: dontRenderAnimation 1ms linear 80ms 1 normal forwards !important; } } `; const { IntersectionObserver } = __CONTEXT__; /** @type {globalThis.PromiseConstructor} */ const Promise = (async () => { })().constructor; // YouTube hacks Promise in WaterFox Classic and "Promise.resolve(0)" nevers resolve. if (!IntersectionObserver) return console.error("Your browser does not support IntersectionObserver.\nPlease upgrade to the latest version.") let ENABLE_FULL_RENDER_REQUIRED_ = false; const isContainSupport = CSS.supports('contain', 'layout paint style'); if (!isContainSupport) { console.warn("Your browser does not support css property 'contain'.\nPlease upgrade to the latest version.".trim()); } else { ENABLE_FULL_RENDER_REQUIRED_ = true; // mainly for Chromium-based browsers } const ENABLE_FULL_RENDER_REQUIRED = ENABLE_FULL_RENDER_REQUIRED_; const win = this || window; // Create a unique key for the script and check if it is already running const hkey_script = 'mchbwnoasqph'; if (win[hkey_script]) throw new Error('Duplicated Userscript Calling'); // avoid duplicated scripting win[hkey_script] = true; const cleanContext = async (win) => { const waitFn = requestAnimationFrame; // shall have been binded to window try { const mx = 16; // MAX TRIAL const frame = document.createElement('iframe'); frame.sandbox = 'allow-same-origin'; const n = document.createElement('noscript'); // wrap into NOSCRPIT to avoid reflow (layouting) n.appendChild(frame); while (!document.documentElement && mx-- > 0) await new Promise(waitFn); // requestAnimationFrame here could get modified by YouTube engine const root = document.documentElement; root.appendChild(n); // throw error if root is null due to exceeding MAX TRIAL while (!frame.contentWindow && mx-- > 0) await new Promise(waitFn); const fc = frame.contentWindow; if (!fc) throw "window is not found."; // throw error if root is null due to exceeding MAX TRIAL const { requestAnimationFrame } = fc; const res = { requestAnimationFrame }; for (let k in res) res[k] = res[k].bind(win); // necessary n.remove(); return res; } catch (e) { console.warn(e); return null; } }; cleanContext(win).then(__CONTEXT__ => { if (!__CONTEXT__) return null; const { requestAnimationFrame } = __CONTEXT__; ENABLE_FULL_RENDER_REQUIRED && document.addEventListener('animationstart', (evt) => { if (evt.animationName === 'dontRenderAnimation') { evt.target.classList.remove('dont-render'); if (scrollChatFn) scrollChatFn(); } }, true); ENABLE_FULL_RENDER_REQUIRED && (() => { const f = (elm) => { if (elm && elm.nodeType === 1) { elm.classList.add('dont-render'); } } Node.prototype.__appendChild931__ = function (a) { a = dr(a); if (this.id === 'items' && this.classList.contains('yt-live-chat-item-list-renderer')) { if (a && a.nodeType === 1) f(a); else if (a instanceof DocumentFragment) { for (let n = a.firstChild; n; n = n.nextSibling) { f(n); } } } } Node.prototype.__appendChild932__ = function () { this.__appendChild931__.apply(this, arguments); return Node.prototype.appendChild.apply(this, arguments) } })(); // let delayedAppendParentWS = new WeakSet(); // let delayedAppendOperations = []; // let commonAppendParentStackSet = new Set(); // let firstVisibleItemDetected = false; // deprecated const sp7 = Symbol(); let dt0 = Date.now() - 2000; const dateNow = () => Date.now() - dt0; // let lastScroll = 0; // let lastLShow = 0; let lastWheel = 0; let scrollChatFn = null; const proxyHelperFn = (dummy) => ({ get(target, prop) { return (prop in dummy) ? dummy[prop] : prop === sp7 ? target : target[prop]; }, set(target, prop, value) { if (!(prop in dummy)) { target[prop] = value; } return true; }, has(target, prop) { return (prop in target) }, deleteProperty(target, prop) { return true; }, ownKeys(target) { return Object.keys(target); }, defineProperty(target, key, descriptor) { return Object.defineProperty(target, key, descriptor); }, getOwnPropertyDescriptor(target, key) { return Object.getOwnPropertyDescriptor(target, key); }, }); const tickerContainerSetAttribute = function (attrName, attrValue) { // ensure '14.30000001%'.toFixed(1) let yd = (this.__dataHost || (this.inst || 0).__dataHost).__data; if (arguments.length === 2 && attrName === 'style' && yd && attrValue) { // let v = yd.containerStyle.privateDoNotAccessOrElseSafeStyleWrappedValue_; let v = `${attrValue}`; // conside a ticker is 101px width // 1% = 1.01px // 0.2% = 0.202px const ratio1 = (yd.ratio * 100); if (ratio1 > -1) { // avoid NaN // countdownDurationMs // 600000 - 0.2% <1% = 6s> <0.2% = 1.2s> // 300000 - 0.5% <1% = 3s> <0.5% = 1.5s> // 150000 - 1% <1% = 1.5s> // 75000 - 2% <1% =0.75s > <2% = 1.5s> // 30000 - 5% <1% =0.3s > <5% = 1.5s> // 99px * 5% = 4.95px // 15000 - 10% <1% =0.15s > <10% = 1.5s> // 1% Duration let ratio2 = ratio1; const ydd = yd.data; const d1 = ydd.durationSec; const d2 = ydd.fullDurationSec; if (d1 === d2 && d1 > 1) { if (d1 > 400) ratio2 = Math.round(ratio2 * 5) / 5; // 0.2% else if (d1 > 200) ratio2 = Math.round(ratio2 * 2) / 2; // 0.5% else if (d1 > 100) ratio2 = Math.round(ratio2 * 1) / 1; // 1% else if (d1 > 50) ratio2 = Math.round(ratio2 * 0.5) / 0.5; // 2% else if (d1 > 25) ratio2 = Math.round(ratio2 * 0.2) / 0.2; // 5% (max => 99px * 5% = 4.95px) else ratio2 = Math.round(ratio2 * 0.2) / 0.2; } else { ratio2 = Math.round(ratio2 * 5) / 5; // 0.2% (min) } // ratio2 = Math.round(ratio2 * 5) / 5; ratio2 = ratio2.toFixed(1) v = v.replace(`${ratio1}%`, `${ratio2}%`).replace(`${ratio1}%`, `${ratio2}%`) if (yd.__style_last__ === v) return; yd.__style_last__ = v; // do not consider any delay here. // it shall be inside the looping for all properties changes. all the css background ops are in the same microtask. } HTMLElement.prototype.setAttribute.call(dr(this), attrName, v); } else { HTMLElement.prototype.setAttribute.apply(dr(this), arguments); } }; const fxOperator = (proto, propertyName) => { let propertyDescriptorGetter = null; try { propertyDescriptorGetter = Object.getOwnPropertyDescriptor(proto, propertyName).get; } catch (e) { } return typeof propertyDescriptorGetter === 'function' ? (e) => { try { return propertyDescriptorGetter.call(dr(e)) } catch (e) { } return e[propertyName]; } : (e) => e[propertyName]; }; const nodeParent = fxOperator(Node.prototype, 'parentNode'); // const nFirstElem = fxOperator(HTMLElement.prototype, 'firstElementChild'); const nPrevElem = fxOperator(HTMLElement.prototype, 'previousElementSibling'); const nNextElem = fxOperator(HTMLElement.prototype, 'nextElementSibling'); const nLastElem = fxOperator(HTMLElement.prototype, 'lastElementChild'); /* globals WeakRef:false */ /** @type {(o: Object | null) => WeakRef | null} */ const mWeakRef = typeof WeakRef === 'function' ? (o => o ? new WeakRef(o) : null) : (o => o || null); // typeof InvalidVar == 'undefined' /** @type {(wr: Object | null) => Object | null} */ const kRef = (wr => (wr && wr.deref) ? wr.deref() : wr); const watchUserCSS = () => { // if (!CSS.supports('contain-intrinsic-size', 'auto var(--wsr94)')) return; const getElemFromWR = (nr) => { const n = kRef(nr); if (n && n.isConnected) return n; return null; } const clearContentVisibilitySizing = () => { Promise.resolve().then(() => { let btnShowMoreWR = mWeakRef(document.querySelector('#show-more[disabled]')); let lastVisibleItemWR = null; for (const elm of document.querySelectorAll('[wSr93]')) { if (elm.getAttribute('wSr93') === 'visible') lastVisibleItemWR = mWeakRef(elm); elm.setAttribute('wSr93', ''); // custom CSS property --wsr94 not working when attribute wSr93 removed } requestAnimationFrame(() => { const btnShowMore = getElemFromWR(btnShowMoreWR); btnShowMoreWR = null; if (btnShowMore) btnShowMore.click(); else { // would not work if switch it frequently const lastVisibleItem = getElemFromWR(lastVisibleItemWR); lastVisibleItemWR = null; if (lastVisibleItem) { Promise.resolve() .then(() => lastVisibleItem.scrollIntoView()) .then(() => lastVisibleItem.scrollIntoView(false)) .then(() => lastVisibleItem.scrollIntoView({ behavior: "instant", block: "end", inline: "nearest" })) .catch(e => { }) // break the chain when method not callable } } }) }) } const mutObserver = new MutationObserver((mutations) => { for (const mutation of mutations) { if ((mutation.addedNodes || 0).length >= 1) { for (const addedNode of mutation.addedNodes) { if (addedNode.nodeName === 'STYLE') { clearContentVisibilitySizing(); return; } } } if ((mutation.removedNodes || 0).length >= 1) { for (const removedNode of mutation.removedNodes) { if (removedNode.nodeName === 'STYLE') { clearContentVisibilitySizing(); return; } } } } }); mutObserver.observe(document.documentElement, { childList: true, subtree: false }) mutObserver.observe(document.head, { childList: true, subtree: false }) mutObserver.observe(document.body, { childList: true, subtree: false }); } const setupStyle = (m1, m2) => { if (!ENABLE_NO_SMOOTH_TRANSFORM) return; const dummy1v = { transform: '', height: '', minHeight: '', paddingBottom: '', paddingTop: '' }; for (const k of ['toString', 'getPropertyPriority', 'getPropertyValue', 'item', 'removeProperty', 'setProperty']) { dummy1v[k] = ((k) => (function () { const style = this[sp7]; return style[k](...arguments); }))(k) } const dummy1p = proxyHelperFn(dummy1v); const sp1v = new Proxy(m1.style, dummy1p); const sp2v = new Proxy(m2.style, dummy1p); Object.defineProperty(m1, 'style', { get() { return sp1v }, set() { }, enumerable: true, configurable: true }); Object.defineProperty(m2, 'style', { get() { return sp2v }, set() { }, enumerable: true, configurable: true }); m1.removeAttribute("style"); m2.removeAttribute("style"); } class WillChangeController { constructor(itemScroller, willChangeValue) { this.element = itemScroller; this.counter = 0; this.active = false; this.willChangeValue = willChangeValue; } beforeOper() { if (!this.active) { this.active = true; this.element.style.willChange = this.willChangeValue; } this.counter++; } afterOper() { const c = this.counter; requestAnimationFrame(() => { if (c === this.counter) { this.active = false; this.element.style.willChange = ''; } }) } release() { const element = this.element; this.element = null; this.counter = 1e16; this.active = false; try { element.style.willChange = ''; } catch (e) { } } } customYtElements.onRegistryReady(() => { let scrollWillChangeController = null; let contensWillChangeController = null; // as it links to event handling, it has to be injected using immediateCallback customYtElements.whenRegistered('yt-live-chat-item-list-renderer', (cProto) => { const mclp = cProto; console.assert(typeof mclp.scrollToBottom_ === 'function') console.assert(typeof mclp.scrollToBottom66_ !== 'function') console.assert(typeof mclp.flushActiveItems_ === 'function') console.assert(typeof mclp.flushActiveItems66_ !== 'function') console.assert(typeof mclp.async === 'function') mclp.__intermediate_delay__ = null; let mzk = 0; let myk = 0; let mlf = 0; let myw = 0; let mzt = 0; let zarr = null; if ((mclp.clearList || 0).length === 0) { mclp.clearList66 = mclp.clearList; mclp.clearList = function () { mzk++; myk++; mlf++; myw++; mzt++; zarr = null; this.__intermediate_delay__ = null; this.clearList66(); }; } if ((mclp.showNewItems_ || 0).length === 0 && ENABLE_NO_SMOOTH_TRANSFORM) { mclp.showNewItems66_ = mclp.showNewItems_; mclp.showNewItems77_ = async function () { if (myk > 1e9) myk = 9; let tid = ++myk; await new Promise(requestAnimationFrame); if (tid !== myk) { return; } const cnt = this; await Promise.resolve(); cnt.showNewItems66_(); await Promise.resolve(); } mclp.showNewItems_ = function () { const cnt = this; cnt.__intermediate_delay__ = new Promise(resolve => { cnt.showNewItems77_().then(() => { resolve(); }); }); } } if ((mclp.flushActiveItems_ || 0).length === 0) { mclp.flushActiveItems66_ = mclp.flushActiveItems_; mclp.flushActiveItems77_ = async function () { try { const cnt = this; if (mlf > 1e9) mlf = 9; let tid = ++mlf; if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return; if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return; // 4 times to maxItems to avoid frequent trimming. // 1 ... 10 ... 20 ... 30 ... 40 ... 50 ... 60 => 16 ... 20 ... 30 ..... 60 ... => 16 this.activeItems_.length > this.data.maxItemsToDisplay * 4 && this.data.maxItemsToDisplay > 4 && this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay - 1); if (cnt.canScrollToBottom_()) { let immd = cnt.__intermediate_delay__; await new Promise(requestAnimationFrame); if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return; if (!cnt.activeItems_ || cnt.activeItems_.length === 0) return; const oMaxItemsToDisplay = this.data.maxItemsToDisplay; const reducedMaxItemsToDisplay = MAX_ITEMS_FOR_FULL_FLUSH; let changeMaxItemsToDisplay = false; if (ENABLE_REDUCED_MAXITEMS_FOR_FLUSH && this.activeItems_.length > this.data.maxItemsToDisplay) { if (this.data.maxItemsToDisplay > reducedMaxItemsToDisplay) { // as all the rendered chats are already "outdated" // all old chats shall remove and reduced number of few chats will be rendered // then restore to the original number changeMaxItemsToDisplay = true; this.data.maxItemsToDisplay = reducedMaxItemsToDisplay; } this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay); // console.log('changeMaxItemsToDisplay 01', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay) } // it is found that it will render all stacked chats after switching back from background // to avoid lagging in popular livestream with massive chats, trim first before rendering. // this.activeItems_.length > this.data.maxItemsToDisplay && this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay); const items = (cnt.$ || 0).items; if (USE_WILL_CHANGE_CONTROLLER) { if (contensWillChangeController && contensWillChangeController.element !== items) { contensWillChangeController.release(); contensWillChangeController = null; } if (!contensWillChangeController) contensWillChangeController = new WillChangeController(items, 'contents'); } const wcController = contensWillChangeController; cnt.__intermediate_delay__ = Promise.all([cnt.__intermediate_delay__ || null, immd || null]); wcController && wcController.beforeOper(); await Promise.resolve(); const len1 = cnt.activeItems_.length; cnt.flushActiveItems66_(); const len2 = cnt.activeItems_.length; let bAsync = len1 !== len2; await Promise.resolve(); if (wcController) { if (bAsync) { cnt.async(() => { wcController.afterOper(); }); } else { wcController.afterOper(); } } if (changeMaxItemsToDisplay) { if (this.data.maxItemsToDisplay === reducedMaxItemsToDisplay) { this.data.maxItemsToDisplay = oMaxItemsToDisplay; // console.log('changeMaxItemsToDisplay 02', this.data.maxItemsToDisplay, oMaxItemsToDisplay, reducedMaxItemsToDisplay) } } if (!ENABLE_NO_SMOOTH_TRANSFORM) { const ff = () => { if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return; // if (tid !== mlf || cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return; if (!cnt.atBottom && cnt.allowScroll && cnt.canScrollToBottomDLW_ && cnt.canScrollToBottomDLW_()) { cnt.scrollToBottom_(); Promise.resolve().then(() => { if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return; if (!cnt.canScrollToBottom_()) cnt.scrollToBottom_(); }) } } ff(); Promise.resolve().then(ff) // requestAnimationFrame(ff); } else if (true) { // it might not be sticky to bottom when there is a full refresh. const knt = cnt; if (!scrollChatFn) scrollChatFn = () => { const cnt = knt; Promise.resolve().then(() => { if (!cnt.atBottom) { if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return; cnt.scrollToBottom_(); } }).then(() => { // do twice if (!cnt.atBottom) { if (cnt.isAttached === false || (cnt.hostElement || cnt).isConnected === false) return; cnt.scrollToBottom_(); } }); } if (!ENABLE_FULL_RENDER_REQUIRED) scrollChatFn(); } return 1; } else { // cnt.flushActiveItems66_(); // this.activeItems_.length > this.data.maxItemsToDisplay && this.activeItems_.splice(0, this.activeItems_.length - this.data.maxItemsToDisplay); return 2; } } catch (e) { console.warn(e); } } mclp.flushActiveItems_ = function () { const cnt = this; if (arguments.length !== 0 || !cnt.activeItems_ || !cnt.canScrollToBottom_) return cnt.flushActiveItems66_.apply(this, arguments); if (cnt.activeItems_.length === 0) { cnt.__intermediate_delay__ = null; return; } const cntData = ((cnt || 0).data || 0); if (cntData.maxItemsToDisplay > MAX_ITEMS_FOR_TOTAL_DISPLAY) cntData.maxItemsToDisplay = MAX_ITEMS_FOR_TOTAL_DISPLAY; // ignore previous __intermediate_delay__ and create a new one cnt.__intermediate_delay__ = new Promise(resolve => { cnt.flushActiveItems77_().then(rt => { if (rt === 1) resolve(1); // success, scroll to bottom else if (rt === 2) resolve(2); // success, trim else resolve(-1); // skip }); }); } } if ((mclp.async || 0).length === 2) { mclp.async66 = mclp.async; mclp.async = function () { // ensure the previous operation is done // .async is usually after the time consuming functions like flushActiveItems_ and scrollToBottom_ const stack = new Error().stack; const isFlushAsync = stack.indexOf('flushActiveItems_') >= 0; (this.__intermediate_delay__ || Promise.resolve()).then(rk => { if (isFlushAsync) { if (rk < 0) return; if (rk === 2 && arguments[0] === this.maybeScrollToBottom_) return; } this.async66.apply(this, arguments); }); } } if ((mclp.onScrollItems_ || 0).length === 1) { mclp.onScrollItems66_ = mclp.onScrollItems_; mclp.onScrollItems77_ = async function (evt) { if (myw > 1e9) myw = 9; let tid = ++myw; await new Promise(requestAnimationFrame); if (tid !== myw) { return; } const cnt = this; await Promise.resolve(); if (USE_OPTIMIZED_ON_SCROLL_ITEMS) { await Promise.resolve().then(() => { this.ytRendererBehavior.onScroll(evt); }).then(() => { if (dateNow() - lastWheel < 80) { this.setAtBottom(); } }).then(() => { this.flushActiveItems_(); }); } else { cnt.onScrollItems66_(evt); } await Promise.resolve(); } mclp.onScrollItems_ = function (evt) { const cnt = this; cnt.__intermediate_delay__ = new Promise(resolve => { cnt.onScrollItems77_(evt).then(() => { resolve(); }); }); } } if ((mclp.handleLiveChatActions_ || 0).length === 1) { mclp.handleLiveChatActions66_ = mclp.handleLiveChatActions_; mclp.handleLiveChatActions77_ = async function (arr) { if (typeof (arr || 0).length !== 'number') { this.handleLiveChatActions66_(arr); return; } if (mzt > 1e9) mzt = 9; let tid = ++mzt; if (zarr === null) zarr = arr; else Array.prototype.push.apply(zarr, arr); arr = null; await new Promise(requestAnimationFrame); if (tid !== mzt || zarr === null) { return; } const carr = zarr; zarr = null; await Promise.resolve(); this.handleLiveChatActions66_(carr); await Promise.resolve(); } mclp.handleLiveChatActions_ = function (arr) { const cnt = this; cnt.__intermediate_delay__ = new Promise(resolve => { cnt.handleLiveChatActions77_(arr).then(() => { resolve(); }); }); } } }) }); const getProto = (element) => { let proto = null; if (element) { if (element.inst) proto = element.inst.constructor.prototype; else proto = element.constructor.prototype; } return proto || null; } let done = 0; let main = async (q) => { if (done) return; if (!q) return; let m1 = nodeParent(q); let m2 = q; if (!(m1 && m1.id === 'item-offset' && m2 && m2.id === 'items')) return; done = 1; // setTimeout(()=>{ // document.documentElement.setAttribute('dont-render-enabled','') // },80) Promise.resolve().then(watchUserCSS); addCss(); setupStyle(m1, m2); let lcRendererWR = null; const lcRendererElm = () => { let lcRenderer = kRef(lcRendererWR); if (!lcRenderer || !lcRenderer.isConnected) { lcRenderer = document.querySelector('yt-live-chat-item-list-renderer.yt-live-chat-renderer'); lcRendererWR = lcRenderer ? mWeakRef(lcRenderer) : null; } return lcRenderer }; let hasFirstShowMore = false; const visObserverFn = (entry) => { const target = entry.target; if (!target) return; // if(target.classList.contains('dont-render')) return; let isVisible = entry.isIntersecting === true && entry.intersectionRatio > 0.5; // const h = entry.boundingClientRect.height; /* if (h < 16) { // wrong: 8 (padding/margin); standard: 32; test: 16 or 20 // e.g. under fullscreen. the element created but not rendered. target.setAttribute('wSr93', ''); return; } */ if (isVisible) { // target.style.setProperty('--wsr94', h + 'px'); target.setAttribute('wSr93', 'visible'); if (nNextElem(target) === null) { // firstVisibleItemDetected = true; /* if (dateNow() - lastScroll < 80) { lastLShow = 0; lastScroll = 0; Promise.resolve().then(clickShowMore); } else { lastLShow = dateNow(); } */ // lastLShow = dateNow(); } else if (!hasFirstShowMore) { // should more than one item being visible // implement inside visObserver to ensure there is sufficient delay hasFirstShowMore = true; requestAnimationFrame(() => { // foreground page // page visibly ready -> load the latest comments at initial loading const lcRenderer = lcRendererElm(); if (lcRenderer) { (lcRenderer.inst || lcRenderer).scrollToBottom_(); } }); } } else if (target.getAttribute('wSr93') === 'visible') { // ignore target.getAttribute('wSr93') === '' to avoid wrong sizing // target.style.setProperty('--wsr94', h + 'px'); target.setAttribute('wSr93', 'hidden'); } // note: might consider 0 < entry.intersectionRatio < 0.5 and target.getAttribute('wSr93') === '' } const visObserver = new IntersectionObserver((entries) => { for (const entry of entries) { Promise.resolve(entry).then(visObserverFn); } }, { // root: HTMLElement.prototype.closest.call(m2, '#item-scroller.yt-live-chat-item-list-renderer'), // nullable rootMargin: "0px", threshold: [0.05, 0.95], }); //m2.style.visibility=''; const mutFn = (items) => { for (let node = nLastElem(items); node !== null; node = nPrevElem(node)) { if (node.hasAttribute('wSr93')) break; node.setAttribute('wSr93', ''); visObserver.observe(node); } } const mutObserver = new MutationObserver((mutations) => { const items = (mutations[0] || 0).target; if (!items) return; mutFn(items); }); const setupMutObserver = (m2) => { scrollChatFn = null; mutObserver.disconnect(); mutObserver.takeRecords(); if (m2) { if (typeof m2.__appendChild932__ === 'function') { if (typeof m2.appendChild === 'function') m2.appendChild = m2.__appendChild932__; if (typeof m2.__shady_native_appendChild === 'function') m2.__shady_native_appendChild = m2.__appendChild932__; } mutObserver.observe(m2, { childList: true, subtree: false }); mutFn(m2); if (ENABLE_NO_SMOOTH_TRANSFORM) { let items = m2; let addedAnchor = false; if (items) { if (items.nextElementSibling === null) { items.classList.add('no-anchor'); addedAnchor = true; items.parentNode.appendChild(dr(document.createElement('item-anchor'))); } } if (addedAnchor) { nodeParent(m2).classList.add('no-anchor'); // required } } // let div = document.createElement('div'); // div.id = 'qwcc'; // HTMLElement.prototype.appendChild.call(document.querySelector('yt-live-chat-item-list-renderer'), div ) // bufferRegion =div; // buffObserver.takeRecords(); // buffObserver.disconnect(); // buffObserver.observe(div, { // childList: true, // subtree: false // }) } } setupMutObserver(m2); const mclp = getProto(document.querySelector('yt-live-chat-item-list-renderer')); if (mclp && mclp.attached) { mclp.attached66 = mclp.attached; mclp.attached = function () { let m2 = document.querySelector('#item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer'); let m1 = nodeParent(m2); setupStyle(m1, m2); setupMutObserver(m2); return this.attached66(); } mclp.detached66 = mclp.detached; mclp.detached = function () { setupMutObserver(); return this.detached66(); } mclp.canScrollToBottomDLW_ = () => !(dateNow() - lastWheel < 80); mclp.canScrollToBottom_ = function () { return this.atBottom && this.allowScroll && this.canScrollToBottomDLW_(); } if (ENABLE_NO_SMOOTH_TRANSFORM) { mclp.isSmoothScrollEnabled_ = function () { return false; } mclp.maybeResizeScrollContainer_ = function () { // } mclp.refreshOffsetContainerHeight_ = function () { // } mclp.smoothScroll_ = function () { // } mclp.resetSmoothScroll_ = function () { // } } } else { console.warn(`proto.attached for yt-live-chat-item-list-renderer is unavailable.`) } let scrollCount = 0; document.addEventListener('scroll', (evt) => { if (!evt || !evt.isTrusted) return; // lastScroll = dateNow(); if (++scrollCount > 1e9) scrollCount = 9; }, { passive: true, capture: true }); // support contain => support passive let lastScrollCount = -1; document.addEventListener('wheel', (evt) => { if (!evt || !evt.isTrusted) return; if (lastScrollCount === scrollCount) return; lastScrollCount = scrollCount; lastWheel = dateNow(); }, { passive: true, capture: true }); // support contain => support passive const fp = (renderer) => { const cnt = renderer.inst || renderer; const container = (cnt.$ || 0).container; if (container) { container.setAttribute = tickerContainerSetAttribute; } }; const tags = ["yt-live-chat-ticker-paid-message-item-renderer", "yt-live-chat-ticker-paid-sticker-item-renderer", "yt-live-chat-ticker-renderer", "yt-live-chat-ticker-sponsor-item-renderer"]; for (const tag of tags) { const dummy = document.createElement(tag); const cProto = getProto(dummy); if (!cProto || !cProto.attached) { console.warn(`proto.attached for ${tag} is unavailable.`) continue; } const __updateTimeout__ = cProto.updateTimeout; const canDoUpdateTimeoutReplacement = (() => { if (dummy.countdownMs < 1 && dummy.lastCountdownTimeMs < 1 && dummy.countdownMs < 1 && dummy.countdownDurationMs < 1) { return typeof dummy.setContainerWidth === 'function' && typeof dummy.slideDown === 'function'; } return false; })(dummy.inst || dummy) && ((__updateTimeout__ + "").indexOf("window.requestAnimationFrame(this.updateTimeout.bind(this))") > 0); if (canDoUpdateTimeoutReplacement) { const killTicker = (cnt) => { if ("auto" === cnt.hostElement.style.width) cnt.setContainerWidth(); cnt.slideDown() }; cProto.__ratio__ = null; cProto._updateTimeout21_ = function (a) { this.countdownMs -= (a - (this.lastCountdownTimeMs || 0)); let currentRatio = this.__ratio__; let tdv = this.countdownMs / this.countdownDurationMs; let nextRatio = Math.round(tdv * 500) / 500; // might generate 0.143000000001 const validCountDown = nextRatio > 0; const isAttached = this.isAttached; if (!validCountDown) { this.lastCountdownTimeMs = null; this.countdownMs = 0; this.__ratio__ = null; this.ratio = 0; if (isAttached) Promise.resolve(this).then(killTicker); } else if (!isAttached) { this.lastCountdownTimeMs = null; } else { this.lastCountdownTimeMs = a; const ratioDiff = currentRatio - nextRatio; // 0.144 - 0.142 = 0.002 if (ratioDiff < 0.001 && ratioDiff > -1e-6) { // ratioDiff = 0 } else { // ratioDiff = 0.002 / 0.004 .... // OR ratioDiff < 0 this.__ratio__ = nextRatio; this.ratio = nextRatio; } return true; } }; cProto._updateTimeout21_ = function (a) { this.countdownMs = Math.max(0, this.countdownMs - (a - (this.lastCountdownTimeMs || 0))); this.ratio = this.countdownMs / this.countdownDurationMs; if (this.isAttached && this.countdownMs) { this.lastCountdownTimeMs = a; return true; } else { this.lastCountdownTimeMs = null; if (this.isAttached) { ("auto" === this.hostElement.style.width && this.setContainerWidth(), this.slideDown()) } } } } cProto.attached77 = cProto.attached cProto.attached = function () { fp(this.hostElement || this); return this.attached77(); } for (const elm of document.getElementsByTagName(tag)) { fp(elm); } } }; function onReady() { let tmObserver = new MutationObserver(() => { let p = document.getElementById('items'); // fast if (!p) return; let q = document.querySelector('#item-offset.style-scope.yt-live-chat-item-list-renderer > #items.style-scope.yt-live-chat-item-list-renderer'); // check if (q) { tmObserver.disconnect(); tmObserver.takeRecords(); tmObserver = null; Promise.resolve(q).then((q) => { // confirm Promis.resolve() is resolveable // execute main without direct blocking main(q); }) } }); tmObserver.observe(document.body || document.documentElement, { childList: true, subtree: true }); } Promise.resolve().then(() => { if (document.readyState !== 'loading') { onReady(); } else { window.addEventListener("DOMContentLoaded", onReady, false); } }); }); })({ IntersectionObserver });