融合 GitHub 增强功能：新窗口打开链接、MD 文件目录化、固定页面头部
// ==UserScript==
// @name GitHub 增强套件
// @namespace http://tampermonkey.net/
// @version 0.8
// @description 融合 GitHub 增强功能：新窗口打开链接、MD 文件目录化、固定页面头部
// @author lecoler & contributors
// @match *://github.com/*
// @match *://gitee.com/*/*
// @match *://npmjs.com/*/*
// @include *.md
// @icon https://github.com/favicon.ico
// @license GPL-3.0
// @run-at document-start
// ==/UserScript==
(function() {
'use strict';
// === 通用工具和配置 ===
const githubRegex = /^https?:\/\/(www\.)?github\.com\//i; // GitHub 链接正则
const processedLinks = new WeakSet(); // 缓存已处理的链接
const log = (...args) => console.log('[GitHub 增强套件]', ...args); // 简化的日志函数
// ===========================================================================
// === 功能1：强制在新窗口打开 GitHub 链接 ===
// ===========================================================================
function handleNewWindowClick(e) {
const link = e.target.closest('a');
if (!link || processedLinks.has(link)) return;
const href = link.href;
if (!href || !githubRegex.test(href) || href.includes('mailto:') || href.includes('#') || link.target === '_blank') return;
e.preventDefault();
e.stopPropagation();
window.open(href, '_blank');
processedLinks.add(link);
}
document.addEventListener('click', handleNewWindowClick, { capture: true, passive: false });
// ===========================================================================
// === 功能2：MD 文件目录化 ===
// ===========================================================================
let $main, $menu, $button, lastPathName = '', moveStatus = false, titleHeight = 0;
function createMdDom() {
const css = document.createElement('style');
css.innerHTML = `
.le-md { position: fixed; top: 16%; left: 90%; z-index: 999; }
.le-md-btn { width: 60px; height: 60px; border-radius: 50%; color: #fff; background: hsla(230,50%,50%,0.6); text-align: center; line-height: 60px; cursor: move; }
.le-md-btn:hover { background: hsla(220,50%,47%,1); }
.le-md-btn-hidden { display: none; }
.hidden { height: 0 !important; min-height: 0 !important; border: 0 !important; }
.le-md-left { right: 0; margin-right: 100px; } .le-md-right { left: 0; margin-left: 100px; }
.le-md-top { bottom: 0; } .le-md-bottom { top: 0; }
.le-md > ul { width: 200px; max-height: 700px; list-style: none; position: absolute; overflow: auto; padding-right: 10px; }
.le-md > ul a { text-decoration: none; color: #909399; display: block; padding: 5px 10px; background: #f4f4f5; }
.le-md li.le-md-title-active a { background: linear-gradient(-135deg, #ffcccc 0.6em, #fff 0); }
.le-md li.le-md-title-active.le-md-title-active-first a { background: linear-gradient(-135deg, #ff9999 0.6em, #fff 0); color: #000; font-weight: 700; }
`;
document.head.appendChild(css);
$main = document.createElement('div');
$button = document.createElement('div');
$menu = document.createElement('ul');
$button.innerHTML = '目录';
$button.title = '右键返回顶部';
$button.addEventListener('click', toggleMenu);
$button.oncontextmenu = e => { scrollTo(0, 0); return false; };
$main.appendChild($button);
$main.appendChild($menu);
$main.className = 'le-md';
document.body.appendChild($main);
$button.onmousedown = e => {
const eleX = e.offsetX, eleY = e.offsetY;
let count = 0;
document.onmousemove = ev => {
if (count++ > 9) moveStatus = true;
const x = ev.clientX - eleX, y = ev.clientY - eleY;
const winWidth = document.documentElement.clientWidth, winHeight = document.documentElement.clientHeight;
$main.style.left = `${(x / winWidth * 100).toFixed(3)}%`;
$main.style.top = `${(y / winHeight * 100).toFixed(3)}%`;
};
$button.onmouseup = $button.onmouseout = () => document.onmousemove = null;
};
window.onresize = () => { if (!$menu.className.match(/hidden/)) $menu.className += ' hidden'; };
}
function toggleMenu(e) {
if (moveStatus) { moveStatus = false; return; }
if ($menu.className.match(/hidden/)) {
if (lastPathName !== location.pathname) generateMdMenu(true);
const winWidth = document.documentElement.clientWidth, winHeight = document.documentElement.clientHeight;
const x = e.clientX, y = e.clientY;
$menu.className = `${winWidth / 2 - x > 0 ? 'le-md-right' : 'le-md-left'} ${winHeight / 2 - y > 0 ? 'le-md-bottom' : 'le-md-top'}`;
} else {
$menu.className += ' hidden';
}
}
function generateMdMenu(flag) {
lastPathName = location.pathname;
let $content, list = [];
const host = location.host;
if (host === 'github.com') {
const $parent = document.getElementById('readme') || document.getElementById('wiki-body');
$content = $parent?.getElementsByClassName('markdown-body')[0];
titleHeight = ($parent?.parentElement?.getElementsByClassName('js-sticky')[0]?.offsetHeight || 0) + 2;
!$menu && window.addEventListener('pjax:complete', generateMdMenu);
} else if (host === 'gitee.com') {
$content = document.getElementById('tree-content-holder')?.getElementsByClassName('markdown-body')[0];
} else if (host === 'www.npmjs.com') {
$content = document.getElementById('readme');
} else {
$content = detectMdContent();
}
const $children = $content?.children || [];
for (let $dom of $children) {
const tag = $dom.tagName;
if (tag.length === 2 && tag.startsWith('H') && !isNaN(+tag[1])) {
const value = $dom.innerText.trim();
const $a = $dom.getElementsByTagName('a')[0];
if ($a) list.push({ type: +tag[1], value, href: $a.getAttribute('href'), offsetTop: getOffsetTop($a) });
}
}
if ($menu) $menu.innerHTML = '';
else createMdDom();
if (!flag) $menu.className = 'hidden';
if (list.length) {
list.forEach(i => {
const li = document.createElement('li');
li.setAttribute('data-offsetTop', i.offsetTop);
const a = document.createElement('a');
a.href = i.href;
a.title = i.value;
a.style = `font-size:${1.3 - i.type * 0.1}em;margin-left:${i.type - 1}em;border-left:0.5em groove hsla(200,80%,${45 + i.type * 10}%,0.8);`;
a.innerText = i.value;
li.appendChild(a);
$menu.appendChild(li);
});
$button.className = 'le-md-btn';
} else {
$button.className = 'le-md-btn le-md-btn-hidden';
}
initScrollHighlight();
}
function detectMdContent() {
let tmp = [];
for (let i = 1; i < 7; i++) {
const list = document.body.getElementsByTagName(`h${i}`);
for (let j of list) {
const parent = j.parentElement;
const item = tmp.find(k => k.ele.isEqualNode(parent));
if (item) item.count++; else tmp.push({ ele: parent, count: 1 });
}
}
return tmp.sort((a, b) => b.count - a.count)[0]?.ele || null;
}
function getOffsetTop($dom, val = 0) {
return $dom ? getOffsetTop($dom.offsetParent, ($dom.offsetTop || 0) + val) : val;
}
function initScrollHighlight() {
const update = debounce(() => {
const scrollTop = (document.documentElement.scrollTop || document.body.scrollTop || 0) + titleHeight;
const offsetHeight = document.documentElement.clientHeight || document.body.clientHeight || 0;
const scrollHeight = document.documentElement.scrollHeight || document.body.scrollHeight || 0;
if ($menu) {
Array.from($menu.children).forEach((li, i) => {
const val = +li.getAttribute('data-offsetTop');
const nextVal = $menu.children[i + 1] ? +$menu.children[i + 1].getAttribute('data-offsetTop') : scrollHeight;
li.className = '';
if (scrollTop <= val && val <= offsetHeight + scrollTop) li.className = 'le-md-title-active';
if (scrollTop >= val && nextVal > scrollTop) li.className = 'le-md-title-active le-md-title-active-first';
});
}
}, 500);
window.onscroll = window.onscroll ? function() { window.onscroll.call(this); update(); } : update;
}
function debounce(func, time) {
let timeId;
return function() {
clearTimeout(timeId);
timeId = setTimeout(() => func.apply(this, arguments), time);
};
}
// ===========================================================================
// === 功能3：固定页面头部 ===
// ===========================================================================
// 固定 GitHub 页面头部
function fixPageHeader() {
// 使用更健壮的选择器定位 GitHub 头部（兼容不同页面）
const header = document.querySelector('.AppHeader, header[role="banner"]');
if (!header) {
log('未找到页面头部元素');
return;
}
// 注入固定样式的 CSS
const css = document.createElement('style');
css.id = 'fixed-header-style'; // 添加 ID 以便后续更新
css.innerHTML = `
.AppHeader, header[role="banner"] {
position: fixed !important;
top: 0 !important;
left: 0 !important;
width: 100% !important;
z-index: 10000 !important; /* 高优先级，避免被覆盖 */
background-color: #24292e !important; /* GitHub 默认头部背景色 */
box-shadow: 0 2px 4px rgba(0,0,0,0.1); /* 添加阴影，提升视觉效果 */
}
body {
padding-top: ${header.offsetHeight}px !important; /* 根据头部高度调整内容偏移 */
}
`;
document.head.appendChild(css);
// 监听 PJAX 事件，确保动态加载后更新样式
window.addEventListener('pjax:complete', () => {
const newHeader = document.querySelector('.AppHeader, header[role="banner"]');
if (newHeader) {
document.body.style.paddingTop = `${newHeader.offsetHeight}px`;
}
});
// 使用 MutationObserver 监听 DOM 变化，确保头部始终固定
const observer = new MutationObserver(() => {
const currentHeader = document.querySelector('.AppHeader, header[role="banner"]');
if (currentHeader && !currentHeader.style.position) {
document.body.style.paddingTop = `${currentHeader.offsetHeight}px`;
}
});
observer.observe(document.body, { childList: true, subtree: true });
}
// ===========================================================================
// === 初始化脚本 ===
// ===========================================================================
document.onreadystatechange = () => {
if (document.readyState === 'complete') {
generateMdMenu(); // 初始化 MD 目录
fixPageHeader(); // 初始化固定页面头部
log('已加载');
}
};
})();