添加LB开头的题目的跳转功能
// ==UserScript==
//此插件由AI（DeepSeek） 编写
// @name 梦熊OJ自动跳题至洛谷
// @license MIT
// @namespace http://tampermonkey.net/
// @version 2.2
// @description 添加LB开头的题目的跳转功能
// @author DeepSeek
// @match https://www.mxoj.net/problem/*
// @match https://www.mxoj.net/training/problems*
// @grant GM_addStyle
// @grant GM_getResourceURL
// @resource luoguIcon https://www.luogu.com.cn/favicon.ico
// @icon https://www.luogu.com.cn/favicon.ico
// @run-at document-idle
// ==/UserScript==
(function() {
'use strict';
// 配置参数
const CONFIG = {
debug: true,
iconUrl: GM_getResourceURL('luoguIcon')
};
// 添加样式
GM_addStyle(`
/* 基础容器 */
.luogu-extension-wrapper {
display: inline-flex !important;
align-items: center !important;
position: relative !important;
vertical-align: middle !important;
}
/* 题目页面跳转按钮 */
.luogu-problem-jump-btn {
display: inline-flex !important;
align-items: center !important;
padding: 6px 12px !important;
margin-left: 12px !important;
background-color: #3498db !important;
color: white !important;
border-radius: 4px !important;
font-size: 14px !important;
text-decoration: none !important;
transition: all 0.2s !important;
cursor: pointer !important;
height: auto !important;
line-height: 1.5 !important;
border: 1px solid transparent !important;
white-space: nowrap !important;
vertical-align: middle !important;
}
.luogu-problem-jump-btn:hover {
background-color: #2980b9 !important;
}
.luogu-problem-jump-btn::before {
content: "" !important;
display: inline-block !important;
width: 16px !important;
height: 16px !important;
margin-right: 5px !important;
background-image: url(${CONFIG.iconUrl}) !important;
background-size: contain !important;
background-repeat: no-repeat !important;
}
/* 题单页悬停按钮 */
.luogu-list-hover-btn {
display: none !important;
width: 16px !important;
height: 16px !important;
margin-left: 8px !important;
background-image: url(${CONFIG.iconUrl}) !important;
background-size: contain !important;
background-repeat: no-repeat !important;
cursor: pointer !important;
vertical-align: middle !important;
}
.luogu-extension-wrapper:hover .luogu-list-hover-btn {
display: inline-block !important;
}
/* 隐藏原有箭头 */
.problem-title::after,
.problem-title::before,
a.problem-title::after,
a.problem-title::before,
.problem-title:hover::after,
.problem-title:hover::before,
a.problem-title:hover::after,
a.problem-title:hover::before {
display: none !important;
content: none !important;
}
`);
// 主控制器
class LuoguExtension {
constructor() {
this.init();
}
init() {
if (this.isProblemPage()) {
this.setupProblemPage();
} else if (this.isProblemSetPage()) {
this.setupProblemSetPage();
}
}
// 页面类型判断
isProblemPage() {
return window.location.pathname.includes('/problem/') &&
!window.location.pathname.includes('/problems');
}
isProblemSetPage() {
return window.location.pathname.includes('/training/problems');
}
// 题目页面设置
setupProblemPage() {
this.waitForElement('button.btn.btn-primary.answer[onclick^="goAnswer"]', (submitBtn) => {
const problemId = this.extractProblemIdFromPage();
const luoguId = this.convertToLuoguId(problemId);
if (luoguId) {
this.addProblemJumpButton(submitBtn, luoguId);
}
});
}
// 题单页面设置
setupProblemSetPage() {
const observer = new MutationObserver(() => {
this.processProblemTitles();
});
observer.observe(document.body, {
childList: true,
subtree: true
});
this.processProblemTitles();
}
// 处理题单页题目
processProblemTitles() {
document.querySelectorAll('.problem-title, a[href*="/problem/"]').forEach((title) => {
if (title.dataset.luoguProcessed) return;
title.dataset.luoguProcessed = 'true';
const wrapper = this.wrapTitle(title);
const problemId = this.extractProblemId(title);
const luoguId = this.convertToLuoguId(problemId);
if (luoguId) {
this.addListHoverButton(wrapper, luoguId);
}
});
}
// 工具方法
wrapTitle(title) {
const wrapper = document.createElement('div');
wrapper.className = 'luogu-extension-wrapper';
title.parentNode.insertBefore(wrapper, title);
wrapper.appendChild(title);
return wrapper;
}
addProblemJumpButton(submitBtn, luoguId) {
const existingBtn = submitBtn.parentNode.querySelector('.luogu-problem-jump-btn');
if (existingBtn) existingBtn.remove();
const btn = document.createElement('a');
btn.href = `https://www.luogu.com.cn/problem/${luoguId}`;
btn.className = 'luogu-problem-jump-btn';
btn.textContent = '洛谷原题';
btn.target = '_blank';
submitBtn.parentNode.insertBefore(btn, submitBtn.nextSibling);
if (CONFIG.debug) console.log('题目页面跳转按钮已添加:', luoguId);
}
addListHoverButton(wrapper, luoguId) {
const btn = document.createElement('div');
btn.className = 'luogu-list-hover-btn';
wrapper.appendChild(btn);
btn.addEventListener('click', (e) => {
e.preventDefault();
window.open(`https://www.luogu.com.cn/problem/${luoguId}`, '_blank');
});
if (CONFIG.debug) console.log('题单页面跳转按钮已添加:', luoguId);
}
waitForElement(selector, callback, attempt = 0) {
const element = document.querySelector(selector);
if (element) {
callback(element);
} else if (attempt < 5) {
setTimeout(() => this.waitForElement(selector, callback, attempt + 1), 200);
}
}
extractProblemIdFromPage() {
const submitBtn = document.querySelector('button.btn.btn-primary.answer[onclick^="goAnswer"]');
if (submitBtn) {
const match = (submitBtn.getAttribute('onclick') || '').match(/goAnswer\('([A-Za-z]+[\dA-Za-z]*)'\)/);
if (match) return match[1];
}
const urlMatch = window.location.pathname.match(/\/problem\/([A-Za-z]+[\dA-Za-z]*)/i);
return urlMatch ? urlMatch[1] : null;
}
extractProblemId(element) {
if (element.href) {
const match = element.href.match(/\/problem\/([A-Za-z]+[\dA-Za-z]*)/i);
if (match) return match[1];
}
return element.textContent.match(/([A-Za-z]+[\dA-Za-z]*)/)?.[1];
}
// 增强的题号转换逻辑
convertToLuoguId(problemId) {
if (!problemId) return null;
// LB题号处理: LB123 → B123
if (problemId.startsWith('LB') && problemId.length > 2) {
return 'B' + problemId.substring(2);
}
// L题号处理: L123 → P123
if (problemId.startsWith('L') && problemId.length > 1) {
return 'P' + problemId.substring(1);
}
// CF题号保持不变
if (problemId.startsWith('CF')) {
return problemId;
}
return null;
}
}
// 启动插件
new LuoguExtension();
})();