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静音、倍速、续播、复制全部题目，并自动拼接逐题解析提示词（这部分没用）。
// ==UserScript==
// @name 学堂在线视频增强助手
// @namespace https://tampermonkey.net/
// @version 1.0.0
// @description 静音、倍速、续播、复制全部题目，并自动拼接逐题解析提示词（这部分没用）。
// @author ChenYY-Official
// @match https://www.xuetangx.com/*
// @grant GM_setClipboard
// @run-at document-start
// @license MIT
// ==/UserScript==
(function () {
'use strict';
const GLOBAL_KEY = '__XTX_VIDEO_HELPER_PRO__';
const MEDIA_PATCH_KEY = '__xtx_media_patch_v3__';
if (window[GLOBAL_KEY] && window[GLOBAL_KEY].destroy) {
try { window[GLOBAL_KEY].destroy(); } catch (e) {}
}
if (!window[MEDIA_PATCH_KEY]) {
window[MEDIA_PATCH_KEY] = true;
window.__xtxForceMuteGlobal__ = true;
const rawPlay = HTMLMediaElement.prototype.play;
HTMLMediaElement.prototype.play = function (...args) {
try {
if (window.__xtxForceMuteGlobal__) {
this.defaultMuted = true;
this.muted = true;
this.volume = 0;
}
} catch (e) {}
return rawPlay.apply(this, args);
};
const volumeDesc = Object.getOwnPropertyDescriptor(HTMLMediaElement.prototype, 'volume');
const mutedDesc = Object.getOwnPropertyDescriptor(HTMLMediaElement.prototype, 'muted');
if (volumeDesc && volumeDesc.configurable) {
Object.defineProperty(HTMLMediaElement.prototype, 'volume', {
get() {
return volumeDesc.get.call(this);
},
set(v) {
if (window.__xtxForceMuteGlobal__) {
return volumeDesc.set.call(this, 0);
}
return volumeDesc.set.call(this, v);
},
configurable: true
});
}
if (mutedDesc && mutedDesc.configurable) {
Object.defineProperty(HTMLMediaElement.prototype, 'muted', {
get() {
return mutedDesc.get.call(this);
},
set(v) {
if (window.__xtxForceMuteGlobal__) {
return mutedDesc.set.call(this, true);
}
return mutedDesc.set.call(this, v);
},
configurable: true
});
}
}
const app = {
panel: null,
styleEl: null,
observer: null,
currentVideo: null,
videoBindMark: new WeakSet(),
keepAliveTimer: null,
routeTimer: null,
lastUrl: location.href,
wakeLock: null,
destroyed: false
};
window[GLOBAL_KEY] = app;
const STORAGE_KEY = 'xtx_video_helper_pro_config_v33';
const defaultConfig = {
rate: 2.0,
volume: 0,
muted: true,
autoMute: true,
autoPlay: true,
autoResume: true,
autoHandleDialogs: true,
keepAwake: false,
seekStep: 10,
panelPos: {
right: 18,
bottom: 18
}
};
let config = loadConfig();
syncGlobalMuteFlag();
function loadConfig() {
try {
return { ...defaultConfig, ...(JSON.parse(localStorage.getItem(STORAGE_KEY)) || {}) };
} catch (e) {
return { ...defaultConfig };
}
}
function saveConfig() {
localStorage.setItem(STORAGE_KEY, JSON.stringify(config));
}
function syncGlobalMuteFlag() {
window.__xtxForceMuteGlobal__ = !!config.autoMute;
}
function qs(sel, root = document) {
return root.querySelector(sel);
}
function qsa(sel, root = document) {
return Array.from(root.querySelectorAll(sel));
}
function textOf(el) {
return (el?.innerText || el?.textContent || '').replace(/\s+/g, ' ').trim();
}
function isVisible(el) {
if (!el || !el.isConnected) return false;
const rect = el.getBoundingClientRect();
const style = getComputedStyle(el);
return rect.width > 0 &&
rect.height > 0 &&
style.display !== 'none' &&
style.visibility !== 'hidden' &&
style.opacity !== '0';
}
function clamp(n, min, max) {
return Math.max(min, Math.min(max, n));
}
function debounce(fn, delay = 250) {
let timer = null;
return function (...args) {
clearTimeout(timer);
timer = setTimeout(() => fn.apply(this, args), delay);
};
}
function findBestVideo() {
const videos = qsa('video').filter(isVisible);
if (!videos.length) return null;
let best = null;
let maxArea = -1;
for (const v of videos) {
const rect = v.getBoundingClientRect();
const area = rect.width * rect.height;
if (area > maxArea) {
maxArea = area;
best = v;
}
}
return best;
}
function safePlay(video) {
if (!video) return;
video.play().catch(() => {
tryClickPlay();
});
}
function tryClickPlay() {
const selectors = [
'.vjs-big-play-button',
'.vjs-play-control',
'.prism-play-btn',
'.xt_video_bit_play_btn',
'.xt_video_player_big_play_layer .xt_video_bit_play_btn',
'button[aria-label*="播放"]',
'button[title*="播放"]',
'.play-btn',
'.playButton'
];
for (const sel of selectors) {
for (const el of qsa(sel)) {
if (!isVisible(el)) continue;
el.click();
return true;
}
}
const candidates = qsa('button, span, div');
for (const el of candidates) {
if (!isVisible(el)) continue;
const txt = textOf(el);
if (/^(播放|开始|继续播放|继续学习|重播)$/.test(txt)) {
el.click();
return true;
}
}
return false;
}
function tryClickNext() {
const candidates = qsa('button, a, li, div, span');
for (const el of candidates) {
if (!isVisible(el)) continue;
const txt = textOf(el);
if (/下一节|下一讲|下一个|继续学习|继续/.test(txt)) {
el.click();
return true;
}
}
return false;
}
function tryHandleDialogs() {
if (!config.autoHandleDialogs) return false;
const texts = ['继续学习', '继续播放', '我知道了', '知道了', '确定', '继续', '关闭'];
const nodes = qsa('button, .ant-btn, span, div');
for (const el of nodes) {
if (!isVisible(el)) continue;
const txt = textOf(el);
if (texts.includes(txt)) {
el.click();
return true;
}
}
return false;
}
function forceMute(video) {
if (!video || !config.autoMute) return;
try { video.defaultMuted = true; } catch (e) {}
try { if (!video.muted) video.muted = true; } catch (e) {}
try { if (video.volume !== 0) video.volume = 0; } catch (e) {}
config.muted = true;
config.volume = 0;
}
function applyVideoPrefs(video) {
if (!video) return;
try { video.playbackRate = config.rate; } catch (e) {}
if (config.autoMute) {
forceMute(video);
} else {
try { video.muted = !!config.muted; } catch (e) {}
try { video.volume = clamp(config.volume, 0, 1); } catch (e) {}
}
}
function setVideoRate(rate) {
const video = app.currentVideo || findBestVideo();
config.rate = clamp(Math.round(rate * 10) / 10, 0.5, 4);
saveConfig();
if (video) {
try { video.playbackRate = config.rate; } catch (e) {}
}
updatePanel();
}
function stepRate(delta) {
const now = app.currentVideo?.playbackRate || config.rate || 1;
setVideoRate(now + delta);
}
function seek(delta) {
const video = app.currentVideo || findBestVideo();
if (!video) return;
try {
video.currentTime = clamp(video.currentTime + delta, 0, isFinite(video.duration) ? video.duration : Infinity);
} catch (e) {}
}
function togglePlay() {
const video = app.currentVideo || findBestVideo();
if (!video) return;
if (video.paused) safePlay(video);
else video.pause();
}
function toggleMute(force) {
const video = app.currentVideo || findBestVideo();
const nextMuted = typeof force === 'boolean' ? force : !config.autoMute;
if (nextMuted) {
config.autoMute = true;
config.muted = true;
config.volume = 0;
saveConfig();
syncGlobalMuteFlag();
if (video) forceMute(video);
} else {
config.autoMute = false;
config.muted = false;
config.volume = Math.max(config.volume || 0.5, 0.5);
saveConfig();
syncGlobalMuteFlag();
if (video) {
try { video.muted = false; } catch (e) {}
try { video.volume = clamp(config.volume, 0, 1); } catch (e) {}
}
}
updatePanel();
}
function bindVideo(video) {
if (!video) return;
app.currentVideo = video;
try { video.defaultMuted = true; } catch (e) {}
applyVideoPrefs(video);
if (config.autoPlay && video.paused) {
safePlay(video);
}
if (app.videoBindMark.has(video)) {
updatePanel();
return;
}
app.videoBindMark.add(video);
video.addEventListener('loadedmetadata', () => {
if (app.destroyed) return;
applyVideoPrefs(video);
if (config.autoMute) {
setTimeout(() => forceMute(video), 0);
setTimeout(() => forceMute(video), 80);
setTimeout(() => forceMute(video), 250);
}
updatePanel();
});
video.addEventListener('canplay', () => {
if (app.destroyed) return;
applyVideoPrefs(video);
if (config.autoPlay && video.paused) safePlay(video);
if (config.autoMute) {
setTimeout(() => forceMute(video), 0);
setTimeout(() => forceMute(video), 100);
setTimeout(() => forceMute(video), 300);
}
updatePanel();
});
video.addEventListener('play', () => {
if (app.destroyed) return;
applyVideoPrefs(video);
if (config.autoMute) {
setTimeout(() => forceMute(video), 0);
setTimeout(() => forceMute(video), 120);
setTimeout(() => forceMute(video), 500);
}
updatePanel();
});
video.addEventListener('ratechange', () => {
if (app.destroyed) return;
if (video === app.currentVideo) {
config.rate = video.playbackRate;
saveConfig();
updatePanel();
}
});
video.addEventListener('volumechange', () => {
if (app.destroyed) return;
if (video !== app.currentVideo) return;
if (config.autoMute) {
setTimeout(() => {
if (app.destroyed) return;
if (video === app.currentVideo) {
forceMute(video);
updatePanel();
}
}, 0);
return;
}
config.volume = video.volume;
config.muted = video.muted;
saveConfig();
updatePanel();
});
video.addEventListener('pause', () => {
if (app.destroyed) return;
if (!config.autoResume) return;
if (video !== app.currentVideo) return;
if (video.ended) return;
setTimeout(() => {
if (app.destroyed) return;
if (video === app.currentVideo && video.paused && !video.ended) {
safePlay(video);
}
}, 1000);
});
video.addEventListener('ended', () => {
if (app.destroyed) return;
if (video !== app.currentVideo) return;
setTimeout(() => {
if (app.destroyed) return;
tryClickNext();
}, 1200);
});
updatePanel();
}
function removePanel() {
if (app.panel) {
try { app.panel.remove(); } catch (e) {}
app.panel = null;
}
if (app.styleEl) {
try { app.styleEl.remove(); } catch (e) {}
app.styleEl = null;
}
}
function applyPanelPosition() {
if (!app.panel) return;
app.panel.style.right = `${config.panelPos.right}px`;
app.panel.style.bottom = `${config.panelPos.bottom}px`;
app.panel.style.left = 'auto';
app.panel.style.top = 'auto';
}
function makePanelDraggable(panel, handle) {
let dragging = false;
let startX = 0;
let startY = 0;
let startRight = 0;
let startBottom = 0;
function onMouseDown(e) {
if (e.target.closest('button') || e.target.closest('input')) return;
dragging = true;
startX = e.clientX;
startY = e.clientY;
startRight = parseFloat(panel.style.right) || 18;
startBottom = parseFloat(panel.style.bottom) || 18;
document.addEventListener('mousemove', onMouseMove);
document.addEventListener('mouseup', onMouseUp);
e.preventDefault();
}
function onMouseMove(e) {
if (!dragging) return;
const dx = e.clientX - startX;
const dy = e.clientY - startY;
const nextRight = clamp(startRight - dx, 0, window.innerWidth - 80);
const nextBottom = clamp(startBottom - dy, 0, window.innerHeight - 40);
panel.style.right = `${nextRight}px`;
panel.style.bottom = `${nextBottom}px`;
panel.style.left = 'auto';
panel.style.top = 'auto';
}
function onMouseUp() {
if (!dragging) return;
dragging = false;
document.removeEventListener('mousemove', onMouseMove);
document.removeEventListener('mouseup', onMouseUp);
config.panelPos = {
right: parseFloat(panel.style.right) || 18,
bottom: parseFloat(panel.style.bottom) || 18
};
saveConfig();
}
handle.addEventListener('mousedown', onMouseDown);
}
function copyText(text) {
try {
if (typeof GM_setClipboard === 'function') {
GM_setClipboard(text);
return true;
}
} catch (e) {}
try {
navigator.clipboard.writeText(text);
return true;
} catch (e) {}
try {
const ta = document.createElement('textarea');
ta.value = text;
document.body.appendChild(ta);
ta.select();
document.execCommand('copy');
ta.remove();
return true;
} catch (e) {}
return false;
}
function normalizeText(s) {
return (s || '').replace(/\n+/g, '\n').replace(/[ \t]+\n/g, '\n').replace(/\n{3,}/g, '\n\n').trim();
}
function getQuestionTypeFromBlock(block) {
const titleEl = qs('.title', block);
const t = textOf(titleEl) || '';
return t || '未知题型';
}
function collectOptionsFromBlock(block) {
const rows = qsa('.leftradio.showUntil, .leftradio', block).filter(isVisible);
return rows.map((row, idx) => {
const label = textOf(qs('.radio_xtb', row)) || String.fromCharCode(65 + idx);
let content = textOf(row).trim();
if (content.startsWith(label)) {
content = content.slice(label.length).trim();
}
return { label, content };
});
}
function collectQuestionTextFromBlock(block, index) {
const type = getQuestionTypeFromBlock(block);
const questionText =
textOf(qs('.leftQuestion .fuwenben', block)) ||
textOf(qs('.fuwenben', block)) ||
'未识别到题干';
const options = collectOptionsFromBlock(block);
let out = `【第${index}题】\n`;
out += `题型：${type}\n`;
out += `题目：${questionText}\n`;
if (options.length) {
out += `选项：\n`;
for (const opt of options) {
out += `${opt.label}. ${opt.content}\n`;
}
}
return normalizeText(out);
}
function collectAllQuestionsText() {
const paperTitle =
textOf(qs('.unit-title')) ||
textOf(qs('.control-left .unit-title')) ||
textOf(qs('.classNameTitle')) ||
'未命名测试';
const blocks = qsa('.question').filter(isVisible);
let parts = [];
if (blocks.length > 0) {
parts = blocks.map((block, idx) => collectQuestionTextFromBlock(block, idx + 1));
} else {
// 当前页面只有一题的兜底
const questionRoot = qs('.question');
if (questionRoot) {
parts.push(collectQuestionTextFromBlock(questionRoot, 1));
}
}
const questionsText = parts.join('\n\n').trim();
return {
paperTitle,
questionsText
};
}
// ===== 改提示词，就改这个函数（目前很多题目没法使用，由于大部分题干是gif，png得图片形式，所以暂时不可用，敬请大神优化 =====
function buildAnalysisPrompt(questionsText, paperTitle) {
const prompt = `
请按题目顺序逐题给出下面这份测试题得答案，不要跳题。
要求：
1，按题目顺序逐题作答，绝不跳题
2，完全套用你给的模板格式
3，只给答案、不加解析、不加废话
测试名称：${paperTitle}
题目如下：
${questionsText}
`;
return normalizeText(prompt);
}
function copyAllQuestionsWithAnalysisPrompt() {
const { paperTitle, questionsText } = collectAllQuestionsText();
if (!questionsText) {
alert('当前没有识别到可复制的题目内容。');
return;
}
const finalText = buildAnalysisPrompt(questionsText, paperTitle);
const ok = copyText(finalText);
if (ok) {
alert('已复制全部题目和解析提示词。');
} else {
alert('复制失败，请检查浏览器剪贴板权限。');
}
}
function isExercisePage() {
return !!qs('.courseActionExamineLearnSpace') || !!qs('.question') || !!qs('.answerCon');
}
function ensureExerciseCopyButton() {
ensureExerciseButtonStyle();
if (qs('#xtx-copy-all-questions-btn')) return;
const btn = document.createElement('button');
btn.id = 'xtx-copy-all-questions-btn';
btn.textContent = '复制题目无法正常使用，不要点击';
btn.addEventListener('click', copyAllQuestionsWithAnalysisPrompt);
document.body.appendChild(btn);
}
function removeExerciseCopyButton() {
const btn = qs('#xtx-copy-all-questions-btn');
if (btn) btn.remove();
}
function ensureExerciseButtonStyle() {
if (document.getElementById('xtx-copy-all-questions-style')) return;
const style = document.createElement('style');
style.id = 'xtx-copy-all-questions-style';
style.textContent = `
#xtx-copy-all-questions-btn{
position: fixed;
right: 18px;
top: 120px;
z-index: 999999;
border: none;
border-radius: 12px;
padding: 10px 14px;
background: rgba(28,28,28,.92);
color: #fff;
box-shadow: 0 10px 26px rgba(0,0,0,.24);
cursor: pointer;
}
#xtx-copy-all-questions-btn:hover{
opacity: .95;
}
`;
document.documentElement.appendChild(style);
}
function createPanel() {
removePanel();
const style = document.createElement('style');
style.textContent = `
#xtx-helper-panel-pro{
position: fixed;
z-index: 999999;
width: 280px;
padding: 14px;
border-radius: 18px;
background: rgba(18,18,18,.92);
color: #fff;
box-shadow: 0 12px 32px rgba(0,0,0,.35);
backdrop-filter: blur(12px);
font-size: 13px;
user-select: none;
}
#xtx-helper-panel-pro *{ box-sizing: border-box; }
#xtx-helper-panel-pro .xtx-head{
display:flex; align-items:center; justify-content:space-between;
margin-bottom:10px; cursor:move;
}
#xtx-helper-panel-pro .xtx-title{ font-size:14px; font-weight:700; }
#xtx-helper-panel-pro .xtx-mini-btn{
border:none; background:rgba(255,255,255,.12); color:#fff;
border-radius:8px; padding:4px 8px; cursor:pointer;
}
#xtx-helper-panel-pro .xtx-row{
display:flex; gap:8px; flex-wrap:wrap; margin:8px 0; align-items:center; justify-content:center;
}
#xtx-helper-panel-pro .xtx-btn{
border:none; background:#3478f6; color:#fff;
border-radius:10px; padding:8px 12px; cursor:pointer; min-width:58px;
}
#xtx-helper-panel-pro .xtx-rate{
min-width:50px; text-align:center; font-weight:700; font-size:15px;
}
#xtx-helper-panel-pro .xtx-check{
display:flex; align-items:center; margin:7px 0; font-size:13px;
}
#xtx-helper-panel-pro .xtx-check input{ margin-right:8px; }
#xtx-helper-panel-pro .xtx-foot{
margin-top:10px; opacity:.82; line-height:1.45;
}
#xtx-helper-panel-pro.xtx-collapsed .xtx-body{ display:none; }
`;
document.documentElement.appendChild(style);
app.styleEl = style;
const panel = document.createElement('div');
panel.id = 'xtx-helper-panel-pro';
panel.innerHTML = `
<div class="xtx-head">
<div class="xtx-title">视频增强</div>
<button class="xtx-mini-btn" id="xtx-collapse-btn">收起</button>
</div>
<div class="xtx-body">
<div class="xtx-row">
<button class="xtx-btn" data-act="slower">-0.1</button>
<div class="xtx-rate" id="xtx-rate-label">1x</div>
<button class="xtx-btn" data-act="faster">+0.1</button>
</div>
<div class="xtx-row">
<button class="xtx-btn" data-rate="1.25">1.25x</button>
<button class="xtx-btn" data-rate="1.5">1.5x</button>
<button class="xtx-btn" data-rate="2">2x</button>
<button class="xtx-btn" data-rate="2.5">2.5x</button>
</div>
<div class="xtx-row">
<button class="xtx-btn" data-act="back">-10s</button>
<button class="xtx-btn" data-act="toggle">播放/暂停</button>
<button class="xtx-btn" data-act="forward">+10s</button>
</div>
<div class="xtx-row">
<button class="xtx-btn" data-act="mute" id="xtx-mute-btn">静音</button>
</div>
<label class="xtx-check"><input id="xtx-autoMute" type="checkbox">超强自动静音</label>
<label class="xtx-check"><input id="xtx-autoPlay" type="checkbox">自动播放</label>
<label class="xtx-check"><input id="xtx-autoResume" type="checkbox">自动续播</label>
<label class="xtx-check"><input id="xtx-autoDialogs" type="checkbox">自动处理常见提示</label>
<label class="xtx-check"><input id="xtx-keepAwake" type="checkbox">防休眠</label>
<div class="xtx-foot">Z/X 调速，←/→ 快退快进，空格 播放/暂停，M 静音</div>
</div>
`;
document.body.appendChild(panel);
app.panel = panel;
applyPanelPosition();
panel.addEventListener('click', (e) => {
const btn = e.target.closest('button');
if (!btn) return;
if (btn.id === 'xtx-collapse-btn') {
panel.classList.toggle('xtx-collapsed');
btn.textContent = panel.classList.contains('xtx-collapsed') ? '展开' : '收起';
return;
}
const rate = btn.dataset.rate;
const act = btn.dataset.act;
if (rate) {
setVideoRate(Number(rate));
return;
}
if (act === 'slower') stepRate(-0.1);
if (act === 'faster') stepRate(0.1);
if (act === 'back') seek(-config.seekStep);
if (act === 'forward') seek(config.seekStep);
if (act === 'toggle') togglePlay();
if (act === 'mute') toggleMute();
});
qs('#xtx-autoMute', panel).checked = config.autoMute;
qs('#xtx-autoPlay', panel).checked = config.autoPlay;
qs('#xtx-autoResume', panel).checked = config.autoResume;
qs('#xtx-autoDialogs', panel).checked = config.autoHandleDialogs;
qs('#xtx-keepAwake', panel).checked = config.keepAwake;
qs('#xtx-autoMute', panel).addEventListener('change', e => {
config.autoMute = e.target.checked;
if (config.autoMute) {
config.muted = true;
config.volume = 0;
}
saveConfig();
syncGlobalMuteFlag();
if (config.autoMute && app.currentVideo) forceMute(app.currentVideo);
updatePanel();
});
qs('#xtx-autoPlay', panel).addEventListener('change', e => {
config.autoPlay = e.target.checked;
saveConfig();
});
qs('#xtx-autoResume', panel).addEventListener('change', e => {
config.autoResume = e.target.checked;
saveConfig();
});
qs('#xtx-autoDialogs', panel).addEventListener('change', e => {
config.autoHandleDialogs = e.target.checked;
saveConfig();
});
qs('#xtx-keepAwake', panel).addEventListener('change', async e => {
config.keepAwake = e.target.checked;
saveConfig();
if (config.keepAwake) await requestWakeLock();
else if (app.wakeLock) {
try { await app.wakeLock.release(); } catch (err) {}
app.wakeLock = null;
}
});
makePanelDraggable(panel, qs('.xtx-head', panel));
updatePanel();
}
function updatePanel() {
if (app.panel) {
const rateLabel = qs('#xtx-rate-label', app.panel);
const muteBtn = qs('#xtx-mute-btn', app.panel);
const r = app.currentVideo?.playbackRate || config.rate || 1;
if (rateLabel) rateLabel.textContent = `${Number(r).toFixed(2).replace(/\.00$/, '').replace(/0$/, '')}x`;
if (muteBtn) muteBtn.textContent = config.autoMute ? '已锁静音' : '开启静音';
}
if (isExercisePage()) ensureExerciseCopyButton();
else removeExerciseCopyButton();
}
async function requestWakeLock() {
if (!config.keepAwake) return;
try {
if ('wakeLock' in navigator && !app.wakeLock) {
app.wakeLock = await navigator.wakeLock.request('screen');
app.wakeLock.addEventListener('release', () => {
app.wakeLock = null;
});
}
} catch (e) {}
}
function scan() {
if (app.destroyed) return;
tryHandleDialogs();
updatePanel();
// 先处理测试页按钮，不能被“没有视频”提前截断
if (isExercisePage()) {
ensureExerciseCopyButton();
} else {
removeExerciseCopyButton();
}
const video = findBestVideo();
// 没有视频时，不再直接中断整个页面增强逻辑
if (!video) {
removePanel();
app.currentVideo = null;
return;
}
if (!app.panel) createPanel();
if (video !== app.currentVideo) {
bindVideo(video);
} else {
applyVideoPrefs(video);
updatePanel();
}
}
function setupObserver() {
if (app.observer) {
try { app.observer.disconnect(); } catch (e) {}
}
app.observer = new MutationObserver(() => {
scheduleScan();
});
app.observer.observe(document.documentElement, {
childList: true,
subtree: true
});
}
function setupRouteHooks() {
const rawPushState = history.pushState;
const rawReplaceState = history.replaceState;
function routeChanged() {
if (app.destroyed) return;
if (location.href === app.lastUrl) return;
app.lastUrl = location.href;
clearTimeout(app.routeTimer);
app.routeTimer = setTimeout(() => scan(), 250);
}
history.pushState = function (...args) {
const ret = rawPushState.apply(this, args);
routeChanged();
return ret;
};
history.replaceState = function (...args) {
const ret = rawReplaceState.apply(this, args);
routeChanged();
return ret;
};
window.addEventListener('popstate', routeChanged, { passive: true });
window.addEventListener('hashchange', routeChanged, { passive: true });
}
function startKeepAlive() {
if (app.keepAliveTimer) clearInterval(app.keepAliveTimer);
app.keepAliveTimer = setInterval(() => {
if (app.destroyed) return;
updatePanel();
tryHandleDialogs();
const video = findBestVideo();
if (!video) {
removePanel();
app.currentVideo = null;
return;
}
if (!app.panel) createPanel();
if (video !== app.currentVideo) {
bindVideo(video);
return;
}
applyVideoPrefs(video);
if (config.autoMute) forceMute(video);
updatePanel();
}, 200);
}
function bindKeys() {
document.addEventListener('keydown', (e) => {
if (app.destroyed) return;
const ae = document.activeElement;
const tag = (ae?.tagName || '').toLowerCase();
if (tag === 'input' || tag === 'textarea' || ae?.isContentEditable) return;
if (e.code === 'Space') {
if (findBestVideo()) {
e.preventDefault();
togglePlay();
}
} else if (e.key === 'ArrowLeft') {
if (findBestVideo()) {
e.preventDefault();
seek(-config.seekStep);
}
} else if (e.key === 'ArrowRight') {
if (findBestVideo()) {
e.preventDefault();
seek(config.seekStep);
}
} else if (e.key.toLowerCase() === 'z') {
if (findBestVideo()) {
e.preventDefault();
stepRate(-0.1);
}
} else if (e.key.toLowerCase() === 'x') {
if (findBestVideo()) {
e.preventDefault();
stepRate(0.1);
}
} else if (e.key.toLowerCase() === 'm') {
if (findBestVideo()) {
e.preventDefault();
toggleMute();
}
}
}, true);
}
app.destroy = function destroy() {
app.destroyed = true;
try { if (app.observer) app.observer.disconnect(); } catch (e) {}
removePanel();
removeExerciseCopyButton();
clearInterval(app.keepAliveTimer);
clearTimeout(app.routeTimer);
if (window[GLOBAL_KEY] === app) {
delete window[GLOBAL_KEY];
}
};
function init() {
bindKeys();
setupObserver();
setupRouteHooks();
scan();
startKeepAlive();
window.addEventListener('focus', () => {
scan();
requestWakeLock();
}, { passive: true });
document.addEventListener('visibilitychange', () => {
if (!document.hidden) {
scan();
requestWakeLock();
}
}, { passive: true });
requestWakeLock();
}
init();
})();