YouTube双语字幕
// ==UserScript==
// @name YouTube bilingual subtitles
// @namespace http://tampermonkey.net/
// @version 1.0.0
// @description YouTube双语字幕
// @author hex0x13h
// @match https://www.youtube.com/watch*
// @match https://youtube.com/watch*
// @match https://m.youtube.com/watch*
// @grant GM_xmlhttpRequest
// @grant GM_setValue
// @grant GM_getValue
// @run-at document-idle
// @connect translate.googleapis.com
// @license MIT
// ==/UserScript==
(function () {
'use strict';
// ---------------- 配置 ----------------
const config = {
targetLang: GM_getValue('targetLang', 'zh-cn'),
originalLang: 'auto',
showOriginal: GM_getValue('showOriginal', true),
fontSize: GM_getValue('fontSize', 16),
position: GM_getValue('subtitlePosition', 'bottom'),
hideNativeCC: GM_getValue('hideNativeCC', false), // 仅视觉隐藏原生字幕
};
const languages = {
'zh-cn': '中文（简体）',
'zh-tw': '中文（繁体）',
en: 'English',
ja: '日本語',
ko: '한국어',
fr: 'Français',
de: 'Deutsch',
es: 'Español',
ru: 'Русский',
pt: 'Português',
it: 'Italiano',
ar: 'العربية',
hi: 'हिन्दी',
th: 'ไทย',
vi: 'Tiếng Việt',
};
// ---------------- 状态 ----------------
let subtitleContainer = null;
let controlPanel = null;
let statusElement = null;
let playerObserver = null;
let captionObserver = null;
let pollIntervalId = null;
let resizeObs = null;
let currentSubtitle = '';
let isInitialized = false;
let currentUrl = location.href;
let playerRoot = null;
// ---------------- 时间工具 ----------------
const now = () => (performance && performance.now ? performance.now() : Date.now());
function debounce(fn, delay) {
let t;
return function (...args) {
clearTimeout(t);
t = setTimeout(() => fn.apply(this, args), delay);
};
}
function throttle(fn, minInterval) {
let last = 0;
let pending = null;
return function (...args) {
const ts = now();
if (ts - last >= minInterval) {
last = ts;
fn.apply(this, args);
} else {
pending && clearTimeout(pending);
pending = setTimeout(() => {
last = now();
fn.apply(this, args);
}, minInterval - (ts - last));
}
};
}
// ==================== 高效翻译子系统（核心升级） ====================
// 句子切分（尽量以标点断开，保留顺序）
const SENTENCE_SPLIT_RE = /([。．｡\.!?！？；;]+)/g;
function splitSentences(text) {
if (!text) return [];
const parts = [];
let buf = '';
text.split(SENTENCE_SPLIT_RE).forEach((chunk, i, arr) => {
buf += chunk;
if (SENTENCE_SPLIT_RE.test(chunk) || i === arr.length - 1) {
const s = buf.trim();
if (s) parts.push(s);
buf = '';
}
});
return parts.length ? parts : [text.trim()];
}
// 文本清洗与归一化
function clean(s) {
return (s || '')
.replace(/\s+/g, ' ')
.replace(/\s+([,.;:!?，。；：！？])/g, '$1')
.replace(/([\u4e00-\u9fa5])\s+([\u4e00-\u9fa5])/g, '$1$2')
.trim();
}
function normalize(s) {
return (s || '')
.replace(/\s+/g, ' ')
.replace(/[。．｡]/g, '.')
.replace(/\s+([,.;:!?])/g, '$1')
.trim()
.toLowerCase();
}
// 句子级 LRU 缓存
class LRU {
constructor(limit = 500) { this.limit = limit; this.map = new Map(); }
get(k) {
if (!this.map.has(k)) return undefined;
const v = this.map.get(k);
this.map.delete(k); this.map.set(k, v);
return v;
}
set(k, v) {
if (this.map.has(k)) this.map.delete(k);
this.map.set(k, v);
if (this.map.size > this.limit) {
const first = this.map.keys().next().value;
this.map.delete(first);
}
}
clear(){ this.map.clear(); }
}
const sentenceCache = new LRU(500);
// 并发队列（外发请求限流）
const MAX_CONCURRENCY = 2; // 可按网络稳定度调成 1~3
let active = 0;
const queue = [];
function enqueue(task) {
return new Promise((resolve, reject) => {
queue.push({ task, resolve, reject });
pump();
});
}
function pump() {
while (active < MAX_CONCURRENCY && queue.length) {
const { task, resolve, reject } = queue.shift();
active++;
task().then(resolve, reject).finally(() => { active--; pump(); });
}
}
// 单次请求：多行文本合并为一条，返回按行切分
function requestTranslate(lines, targetLang) {
const text = lines.join('\n');
const url = `https://translate.googleapis.com/translate_a/single?client=gtx&sl=auto&tl=${targetLang}&dt=t&q=${encodeURIComponent(text)}`;
return enqueue(() => new Promise((resolve) => {
GM_xmlhttpRequest({
method: 'GET',
url,
timeout: 6000,
onload: (resp) => {
try {
const data = JSON.parse(resp.responseText);
const full = (data && data[0]) ? data[0].map(v => v[0]).join('') : text;
resolve(full.split('\n').map(clean));
} catch (e) {
console.error('翻译解析失败:', e);
resolve(lines);
}
},
onerror: () => resolve(lines),
ontimeout: () => resolve(lines),
});
}));
}
// 主翻译：句子缓存 + 批量请求
async function translateText(text, targetLang = config.targetLang) {
if (!text || !text.trim()) return '';
const sentences = splitSentences(text);
const need = [];
const indexOfNeed = [];
const result = new Array(sentences.length);
sentences.forEach((s, i) => {
const key = `${s}__${targetLang}`;
const hit = sentenceCache.get(key);
if (hit !== undefined) {
result[i] = hit;
} else {
need.push(s);
indexOfNeed.push(i);
}
});
// 分批：控制每批长度，减少 414/限流
const batches = [];
if (need.length) {
const MAX_BATCH_CHARS = 1500;
let batch = [];
let len = 0;
for (const s of need) {
if (len + s.length + 1 > MAX_BATCH_CHARS && batch.length) {
batches.push(batch);
batch = [s]; len = s.length + 1;
} else { batch.push(s); len += s.length + 1; }
}
if (batch.length) batches.push(batch);
}
const translatedBatches = await Promise.all(batches.map(b => requestTranslate(b, targetLang)));
// 写回
let cursor = 0;
translatedBatches.forEach(arr => {
arr.forEach(t => {
const idx = indexOfNeed[cursor++];
const origin = sentences[idx];
const key = `${origin}__${targetLang}`;
sentenceCache.set(key, t);
result[idx] = t;
});
});
const merged = clean(result.join(' '));
return merged || text;
}
// ==================== 0 延迟显示（先原文，后替换） ====================
const LOW_LATENCY_MODE = true; // 需要关闭可改为 false
let lastInstantText = '';
function showOriginalInstant(text) {
if (!LOW_LATENCY_MODE) return;
if (!subtitleContainer) return;
const t = (text || '').trim();
if (!t || t === lastInstantText) return;
// 若已显示双语字幕，且内容不变，则跳过
if (currentSubtitle && t === currentSubtitle) return;
subtitleContainer.textContent = '';
const originalDiv = document.createElement('div');
originalDiv.style.color = '#e0e0e0';
originalDiv.style.fontSize = '0.9em';
originalDiv.style.opacity = '0.85';
originalDiv.textContent = t;
subtitleContainer.appendChild(originalDiv);
subtitleContainer.style.display = 'block';
lastInstantText = t;
}
// ---------------- DOM 创建（保持不变） ----------------
function createElement(tag, styles = {}, textContent = '') {
const el = document.createElement(tag);
Object.assign(el.style, styles);
if (textContent) el.textContent = textContent;
return el;
}
// 播放器根节点
function getPlayerRoot() {
return document.querySelector('#movie_player') ||
document.querySelector('.html5-video-player') ||
document.body; // 兜底
}
// 控制面板（样式/结构不变）
function createControlPanel() {
const old = document.getElementById('bilingual-subtitle-panel');
if (old) old.remove();
const oldTab = document.getElementById('bilingual-reopen-tab');
if (oldTab) oldTab.remove();
controlPanel = createElement('div', {
position: 'fixed',
top: '70px',
right: '20px',
background: 'rgba(0,0,0,0.95)',
color: '#fff',
padding: '20px',
borderRadius: '12px',
zIndex: '2147483647',
minWidth: '300px',
maxWidth: '350px',
boxShadow: '0 8px 32px rgba(0,0,0,0.5)',
border: '2px solid #ff0000',
fontFamily: 'Segoe UI, Arial, sans-serif',
fontSize: '14px',
transform: GM_getValue('panelHidden', false) ? 'translateX(280px)' : 'translateX(0px)',
transition: 'transform .25s ease',
});
controlPanel.id = 'bilingual-subtitle-panel';
const header = createElement('div', { display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: '15px' });
const title = createElement('h3', { margin: '0', fontSize: '16px', fontWeight: 'bold' }, '🎬 双语字幕');
const toggleBtn = createElement('button', {
background: '#ff4757', border: 'none', color: '#fff', fontSize: '16px',
cursor: 'pointer', padding: '5px 10px', borderRadius: '4px', fontWeight: 'bold'
}, GM_getValue('panelHidden', false) ? '+' : '−');
toggleBtn.id = 'toggle-panel';
header.appendChild(title);
header.appendChild(toggleBtn);
const content = createElement('div', { display: GM_getValue('panelHidden', false) ? 'none' : 'block' });
content.id = 'panel-content';
// 语言
const langGroup = createElement('div', { marginBottom: '15px' });
langGroup.appendChild(createElement('label', { display: 'block', marginBottom: '5px', fontSize: '12px', color: '#ccc' }, '翻译语言:'));
const langSelect = createElement('select', {
width: '100%',
padding: '8px',
border: '1px solid #444',
borderRadius: '6px',
background: '#222',
color: 'white',
fontSize: '12px',
});
langSelect.id = 'target-lang';
Object.entries(languages).forEach(([code, name]) => {
const opt = createElement('option', {}, name);
opt.value = code;
if (code === config.targetLang) opt.selected = true;
langSelect.appendChild(opt);
});
langGroup.appendChild(langSelect);
// 显示原文
const originalGroup = createElement('div', { marginBottom: '15px' });
const originalLabel = createElement('label', { display: 'flex', alignItems: 'center', fontSize: '12px', color: '#ccc', cursor: 'pointer' });
const originalCheckbox = createElement('input');
originalCheckbox.type = 'checkbox';
originalCheckbox.id = 'show-original';
originalCheckbox.checked = config.showOriginal;
originalCheckbox.style.marginRight = '8px';
originalLabel.appendChild(originalCheckbox);
originalLabel.appendChild(createElement('span', {}, '显示原始字幕'));
originalGroup.appendChild(originalLabel);
// 隐藏原生字幕（仅视觉）
const hideNativeGroup = createElement('div', { marginBottom: '15px' });
const hideNativeLabel = createElement('label', { display: 'flex', alignItems: 'center', fontSize: '12px', color: '#ccc', cursor: 'pointer' });
const hideNativeCb = createElement('input');
hideNativeCb.type = 'checkbox';
hideNativeCb.id = 'hide-native-cc';
hideNativeCb.checked = config.hideNativeCC;
hideNativeCb.style.marginRight = '8px';
hideNativeLabel.appendChild(hideNativeCb);
hideNativeLabel.appendChild(createElement('span', {}, '隐藏原生字幕（仅视觉隐藏）'));
hideNativeGroup.appendChild(hideNativeLabel);
// 字体
const fontGroup = createElement('div', { marginBottom: '15px' });
fontGroup.appendChild(createElement('label', { display: 'block', marginBottom: '5px', fontSize: '12px', color: '#ccc' }, '字体大小:'));
const fontSlider = createElement('input');
fontSlider.type = 'range';
fontSlider.id = 'font-size';
fontSlider.min = '12';
fontSlider.max = '24';
fontSlider.value = config.fontSize;
fontSlider.style.width = '100%';
const fontValue = createElement('span', { fontSize: '11px', color: '#999' }, config.fontSize + 'px');
fontValue.id = 'font-size-value';
fontGroup.appendChild(fontSlider);
fontGroup.appendChild(fontValue);
// 位置
const posGroup = createElement('div', { marginBottom: '15px' });
posGroup.appendChild(createElement('label', { display: 'block', marginBottom: '5px', fontSize: '12px', color: '#ccc' }, '字幕位置:'));
const posSelect = createElement('select', {
width: '100%',
padding: '8px',
border: '1px solid #444',
borderRadius: '6px',
background: '#222',
color: 'white',
fontSize: '12px',
});
posSelect.id = 'subtitle-position';
[
{ value: 'bottom', text: '底部' },
{ value: 'top', text: '顶部' },
].forEach((p) => {
const o = createElement('option', {}, p.text);
o.value = p.value;
if (p.value === config.position) o.selected = true;
posSelect.appendChild(o);
});
// 状态
const statusGroup = createElement('div', { marginBottom: '15px' });
const statusText = createElement('div', { fontSize: '11px', color: '#999', textAlign: 'center' }, '状态: ');
statusElement = createElement('span', { color: '#4fc3f7' }, '等待字幕...');
statusElement.id = 'status-text';
statusText.appendChild(statusElement);
statusGroup.appendChild(statusText);
// 按钮
const clearBtn = createElement(
'button',
{ width: '100%', padding: '8px', background: '#ff4757', color: 'white', border: 'none', borderRadius: '6px', cursor: 'pointer', fontSize: '12px', marginBottom: '10px' },
'清除翻译缓存'
);
clearBtn.id = 'clear-cache';
const testBtn = createElement(
'button',
{ width: '100%', padding: '8px', background: '#2ed573', color: 'white', border: 'none', borderRadius: '6px', cursor: 'pointer', fontSize: '12px' },
'测试翻译'
);
testBtn.id = 'test-translation';
// 组装
content.appendChild(langGroup);
content.appendChild(originalGroup);
content.appendChild(hideNativeGroup);
content.appendChild(fontGroup);
content.appendChild(posGroup);
content.appendChild(statusGroup);
content.appendChild(clearBtn);
content.appendChild(testBtn);
controlPanel.appendChild(header);
controlPanel.appendChild(content);
document.body.appendChild(controlPanel);
// 抽拉手（保持）
const reopenTab = createElement('div', {
position: 'fixed',
top: '120px',
right: '0px',
width: '28px',
height: '96px',
background: '#ff4757',
color: '#fff',
borderTopLeftRadius: '8px',
borderBottomLeftRadius: '8px',
display: GM_getValue('panelHidden', false) ? 'flex' : 'none',
alignItems: 'center',
justifyContent: 'center',
cursor: 'pointer',
zIndex: '2147483647',
boxShadow: '0 4px 12px rgba(0,0,0,.4)',
userSelect: 'none',
fontWeight: 'bold'
}, '≡');
reopenTab.title = '点击展开双语字幕面板（Alt+Shift+B 也可切换）';
reopenTab.id = 'bilingual-reopen-tab';
document.body.appendChild(reopenTab);
const showPanel = () => {
const c = document.getElementById('panel-content');
if (!c) return;
c.style.display = 'block';
controlPanel.style.transform = 'translateX(0px)';
toggleBtn.textContent = '−';
GM_setValue('panelHidden', false);
const tab = document.getElementById('bilingual-reopen-tab');
if (tab) tab.style.display = 'none';
};
const hidePanel = () => {
const c = document.getElementById('panel-content');
if (!c) return;
c.style.display = 'none';
controlPanel.style.transform = 'translateX(280px)';
toggleBtn.textContent = '+';
GM_setValue('panelHidden', true);
const tab = document.getElementById('bilingual-reopen-tab');
if (tab) tab.style.display = 'flex';
};
toggleBtn.addEventListener('click', (e) => {
e.preventDefault();
const isHidden = content.style.display === 'none';
isHidden ? showPanel() : hidePanel();
});
reopenTab.addEventListener('click', (e) => {
e.preventDefault();
showPanel();
});
function ensurePanelOnScreen() {
const rect = controlPanel.getBoundingClientRect();
const vw = Math.max(document.documentElement.clientWidth, window.innerWidth || 0);
const vh = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);
if (rect.left >= vw || rect.right <= 0 || rect.top >= vh || rect.bottom <= 0) {
showPanel();
controlPanel.style.right = '20px';
controlPanel.style.top = '70px';
}
}
ensurePanelOnScreen();
window.addEventListener('resize', ensurePanelOnScreen);
// 其它控件事件（保持）
langSelect.addEventListener('change', (e) => {
config.targetLang = e.target.value;
GM_setValue('targetLang', config.targetLang);
sentenceCache.clear();
updateStatus('语言已更改');
});
originalCheckbox.addEventListener('change', (e) => {
config.showOriginal = e.target.checked;
GM_setValue('showOriginal', config.showOriginal);
updateSubtitleDisplay();
});
hideNativeCb.addEventListener('change', (e) => {
config.hideNativeCC = e.target.checked;
GM_setValue('hideNativeCC', config.hideNativeCC);
applyHideNativeCC(config.hideNativeCC);
});
fontSlider.addEventListener('input', (e) => {
config.fontSize = parseInt(e.target.value, 10);
fontValue.textContent = config.fontSize + 'px';
GM_setValue('fontSize', config.fontSize);
updateSubtitleDisplay();
});
posSelect.addEventListener('change', (e) => {
config.position = e.target.value;
GM_setValue('subtitlePosition', config.position);
updateSubtitleDisplay();
});
clearBtn.addEventListener('click', (e) => {
e.preventDefault();
sentenceCache.clear();
updateStatus('缓存已清除');
});
testBtn.addEventListener('click', async (e) => {
e.preventDefault();
updateStatus('测试中...');
const result = await translateText('Hello World', config.targetLang);
updateStatus(`测试成功: ${result}`);
showBilingualSubtitle('This is a test subtitle for the bilingual subtitle tool.');
setTimeout(hideSubtitle, 2500);
});
}
function updateStatus(message) {
if (statusElement) {
statusElement.textContent = message;
statusElement.style.color = '#4fc3f7';
}
}
// 字幕容器（样式保持）
function createSubtitleContainer() {
const old = document.getElementById('bilingual-subtitles');
if (old) old.remove();
playerRoot = getPlayerRoot();
subtitleContainer = createElement('div', {
position: 'absolute',
left: '50%',
transform: 'translateX(-50%)',
background: 'rgba(0, 0, 0, 0.9)',
color: 'white',
padding: '10px 16px',
borderRadius: '8px',
fontFamily: 'Arial, sans-serif',
textAlign: 'center',
zIndex: '2147483646',
maxWidth: '86%',
lineHeight: '1.35',
boxShadow: '0 4px 12px rgba(0, 0, 0, 0.5)',
display: 'none',
border: '1px solid rgba(255, 255, 255, 0.2)',
});
subtitleContainer.id = 'bilingual-subtitles';
(playerRoot || document.body).appendChild(subtitleContainer);
if (resizeObs) resizeObs.disconnect();
resizeObs = new ResizeObserver(() => updateSubtitleDisplay());
resizeObs.observe(playerRoot || document.body);
updateSubtitleDisplay();
}
function updateSubtitleDisplay() {
if (!subtitleContainer) return;
subtitleContainer.style.fontSize = config.fontSize + 'px';
const SAFE_OFFSET = 14; // 与原生字幕的安全间距
if (config.position === 'top') {
subtitleContainer.style.top = '8%';
subtitleContainer.style.bottom = 'auto';
} else {
subtitleContainer.style.bottom = `calc(12% + ${SAFE_OFFSET}px)`;
subtitleContainer.style.top = 'auto';
}
}
// 视觉隐藏/恢复原生字幕（不影响抓取）
function applyHideNativeCC(hide) {
const cc = document.querySelector('.ytp-caption-window-container');
if (!cc) return;
cc.style.opacity = hide ? '0' : '';
cc.style.pointerEvents = hide ? 'none' : '';
}
// 从原生字幕容器抓取文本（不依赖 opacity，隐藏时也能抓到）
function getSubtitleText() {
const container = document.querySelector('.ytp-caption-window-container');
if (!container || container.offsetParent === null) return null;
const segments = container.querySelectorAll('.ytp-caption-segment');
let text = '';
segments.forEach((seg) => {
const style = window.getComputedStyle(seg);
if (style && style.display !== 'none' && style.visibility !== 'hidden') {
const t = seg.textContent || '';
if (t.trim()) text += (text ? ' ' : '') + t.trim();
}
});
return text || null;
}
// 显示双语字幕：整体替换字幕容器内容，保持同步出现
async function showBilingualSubtitle(originalText) {
if (!subtitleContainer || !originalText) return;
originalText = originalText.trim();
if (originalText === currentSubtitle) return;
currentSubtitle = originalText;
updateStatus('翻译中...');
try {
const translatedTextRaw = await translateText(currentSubtitle, config.targetLang);
const translatedText = (translatedTextRaw || '').trim();
const same = normalize(translatedText) === normalize(currentSubtitle);
subtitleContainer.textContent = '';
if (!same) {
const translatedDiv = createElement('div', { color: '#4fc3f7', marginBottom: config.showOriginal ? '5px' : '0', fontWeight: 'bold' }, translatedText);
subtitleContainer.appendChild(translatedDiv);
if (config.showOriginal) {
const originalDiv = createElement('div', { color: '#e0e0e0', fontSize: '0.9em', opacity: '0.85' }, currentSubtitle);
subtitleContainer.appendChild(originalDiv);
}
updateStatus('字幕已显示');
} else {
const onlyDiv = createElement('div', { color: '#e0e0e0', fontWeight: 'bold' }, currentSubtitle);
subtitleContainer.appendChild(onlyDiv);
updateStatus('同文无需翻译');
}
subtitleContainer.style.display = 'block';
lastInstantText = same ? currentSubtitle : translatedText;
} catch (e) {
console.error('显示字幕失败:', e);
updateStatus('翻译失败（已保留原文）');
// 保留即时原文，不清空容器避免闪烁
}
}
// 隐藏字幕，整体隐藏并清空
function hideSubtitle() {
if (subtitleContainer) {
subtitleContainer.style.display = 'none';
subtitleContainer.textContent = '';
currentSubtitle = '';
lastInstantText = '';
updateStatus('等待字幕...');
}
}
// =============== 监听逻辑（修复同步问题） ===============
const debouncedCheck = debounce(() => {
const t = getSubtitleText();
if (t && t !== currentSubtitle) {
throttledApply(t);
} else if (!t && currentSubtitle) {
hideSubtitle();
}
}, 220);
const throttledApply = throttle((t) => showBilingualSubtitle(t), 200);
function observeCaptions() {
disconnectCaptionObserver();
const container = document.querySelector('.ytp-caption-window-container');
if (!container) return;
captionObserver = new MutationObserver(() => {
const raw = getSubtitleText();
if (raw) showOriginalInstant(raw);
debouncedCheck();
});
captionObserver.observe(container, {
childList: true,
subtree: true,
characterData: true,
attributes: true,
attributeFilter: ['class', 'style'],
});
if (pollIntervalId) clearInterval(pollIntervalId);
pollIntervalId = setInterval(() => {
const raw = getSubtitleText();
if (raw) showOriginalInstant(raw);
debouncedCheck();
}, 800);
}
function observePlayer() {
disconnectPlayerObserver();
const player = getPlayerRoot();
playerObserver = new MutationObserver(() => {
if (document.querySelector('.ytp-caption-window-container')) {
observeCaptions();
}
});
playerObserver.observe(player || document.body, { childList: true, subtree: true });
}
function disconnectCaptionObserver() {
if (captionObserver) {
captionObserver.disconnect();
captionObserver = null;
}
if (pollIntervalId) {
clearInterval(pollIntervalId);
pollIntervalId = null;
}
}
function disconnectPlayerObserver() {
if (playerObserver) {
playerObserver.disconnect();
playerObserver = null;
}
}
// ---------------- 初始化 & 清理 ----------------
function cleanup() {
disconnectCaptionObserver();
disconnectPlayerObserver();
if (resizeObs) { resizeObs.disconnect(); resizeObs = null; }
const oldPanel = document.getElementById('bilingual-subtitle-panel'); if (oldPanel) oldPanel.remove();
const oldTab = document.getElementById('bilingual-reopen-tab'); if (oldTab) oldTab.remove();
const oldSubs = document.getElementById('bilingual-subtitles'); if (oldSubs) oldSubs.remove();
currentSubtitle = '';
lastInstantText = '';
}
function forceInit() {
if (isInitialized) return;
try {
cleanup();
createControlPanel();
createSubtitleContainer();
observePlayer();
observeCaptions();
applyHideNativeCC(config.hideNativeCC);
isInitialized = true;
updateStatus('工具已就绪');
console.log('双语字幕工具初始化完成！');
} catch (e) {
console.error('初始化失败:', e);
setTimeout(() => { isInitialized = false; forceInit(); }, 2000);
}
}
// 页面加载
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', forceInit);
} else {
forceInit();
}
// URL 变化（单页应用）
setInterval(() => {
if (location.href !== currentUrl) {
currentUrl = location.href;
console.log('页面URL变化，重新初始化...');
isInitialized = false;
forceInit();
}
}, 800);
// 全局快捷键：Alt + Shift + B 切换显示/隐藏面板
window.addEventListener('keydown', (e) => {
if (e.altKey && e.shiftKey && (e.key.toLowerCase && e.key.toLowerCase() === 'b')) {
const panel = document.getElementById('bilingual-subtitle-panel');
const content = document.getElementById('panel-content');
const tab = document.getElementById('bilingual-reopen-tab');
if (!panel || !content) return;
const hidden = content.style.display === 'none';
if (hidden) {
content.style.display = 'block';
panel.style.transform = 'translateX(0px)';
GM_setValue('panelHidden', false);
if (tab) tab.style.display = 'none';
} else {
content.style.display = 'none';
panel.style.transform = 'translateX(280px)';
GM_setValue('panelHidden', true);
if (tab) tab.style.display = 'flex';
}
}
});
})();