禁英文站跳中文站，增加中英站互跳按钮，中文站剪切板净化，删除中英站一些广告
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// ==UserScript==
// @name Leetcode 助手
// @namespace http://tampermonkey.net/
// @homepageURL https://github.com/h-hg/leetcode-optimization
// @supportURL https://github.com/h-hg/leetcode-optimization/issues
// @version 0.1.1
// @description 禁英文站跳中文站，增加中英站互跳按钮，中文站剪切板净化，删除中英站一些广告
// @author Hunter Hwang
// @license MIT
// @match https://leetcode.com/*
// @match https://leetcode.com/problems/*
// @match https://leetcode.cn/problems/*
// @icon https://assets.leetcode.com/static_assets/public/icons/favicon-192x192.png
// @run-at document-idle
// @grant GM_addStyle
// @grant GM_webRequest
// ==/UserScript==
(function() {
'use strict';
function handleCopy(e) {
e.stopPropagation();
const copytext = window.getSelection();
const clipdata = e.clipboardData || window.clipboardData;
if (clipdata) {
clipdata.setData("Text", copytext);
}
}
/**
* @link https://stackoverflow.com/questions/22125865/wait-until-flag-true
*/
function waitFor(condition, callback) {
if (!condition()) {
window.setTimeout(waitFor.bind(null, condition, callback), 1000);
} else {
callback();
}
}
function isCNSite() {
return location.hostname === 'leetcode.cn'
}
function getProblemName() {
var tmp = location.href.match(/problems\/([^\/]+)/);
return (tmp != null && tmp[1] != 'all') ? tmp[1] : null;
}
function hasProblemId() {
var tag = isCNSite() ? 'h4[data-cypress="QuestionTitle"] a' : 'div[data-cy="question-title"]';
return document.querySelector(tag) != null;
}
function getProblemId() {
var tag = isCNSite() ? 'h4[data-cypress="QuestionTitle"] a' : 'div[data-cy="question-title"]';
return document.querySelector(tag).textContent.match('([0-9]+)')[1];
}
function getOthterLangUrl() {
var matchRes = location.href.match(/problems\/([^\/]+)\/?([a-z]+)?/);
if(matchRes == null || matchRes[1] == 'all')
return null;
var problemName = matchRes[1], tab = matchRes[2];
if(tab == 'discuss') {
tab = 'comments';
} else if(tab == 'comments') {
tab = 'discuss';
} else if(tab == 'submissions' || tab == 'solution') {
} else {
tab = '';
}
return `https://leetcode${isCNSite() ? '' : '-cn'}.com/problems/${problemName}/${tab}`
}
function banAutoJump2Cn() {
GM_webRequest([
{selector: 'https://assets.leetcode.cn/*', action: 'cancel'},
], function (info, message, details) {
console.log(info, message, details);
});
}
function html2elem(html) {
let template = document.createElement('template');
html = html.trim(); // Never return a text node of whitespace as the result
template.innerHTML = html;
return template.content.firstChild;
}
function getMenuItems() {
var name = getProblemName(), id = getProblemId();
return {
[isCNSite() ? 'English' : '中文'] : getOthterLangUrl(),
'labuladong': `https://labuladong.github.io/article/?qno=${id}`,
'九章算法': `https://www.jiuzhang.com/solution/${name}`,
}
}
function createBall() {
// add css
GM_addStyle(`
.leetcode-wrapper {
position: fixed;
top: 30%;
left: 10px;
z-index: 1;
}
.leetcode-wrapper .btn {
cursor: move;
width: 48px;
height: 48px;
border-radius: 50%;
border: 2px solid black;
opacity: 0.1;
}
.leetcode-wrapper:hover .btn {
background:url(https://leetcode.com/favicon-96x96.png) no-repeat;
background-size:cover;
opacity: 0.8;
}
.leetcode-wrapper .menu {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 100px;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
}
.leetcode-wrapper:hover .menu {
display: block;
}
.leetcode-wrapper .menu a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
}
.leetcode-wrapper .menu a:hover {
background-color: #f1f1f1
}
`);
// add html
var wrapper = html2elem(`
<div class="leetcode-wrapper">
<button id="leetcode-btn" class="btn"></button>
<div class="menu">
<!-- <a href="", target="_blank"></a> -->
</div>
</div>
`);
var menu = wrapper.querySelector('.menu');
waitFor(hasProblemId, () => {
var items = getMenuItems();
for(var key in items) {
var link = document.createElement('a');
link.appendChild(document.createTextNode(key));
link.href = items[key];
link.target = '_blank';
menu.appendChild(link);
}
document.body.appendChild(wrapper);
var btn = document.getElementById('leetcode-btn');
btn.addEventListener('mouseenter', function(e){
menu.firstElementChild.href = getOthterLangUrl();
})
})
}
// prevent auto jump to leetcode.cn
if(!isCNSite()) {
banAutoJump2Cn();
}
// AD
if(isCNSite()) {
} else {
GM_addStyle(`
/* 顶部中文横幅 */
#cn-banner {
display: none!important;
}';
#region_switcher{
display: none!important;
}
/* 顶部 LeetCode is hiring! Apply Now! */
.feedback-anchor {
display: none!important;
};
`);
}
// problems navigator
let problemName = getProblemName();
if(problemName != null) {
createBall();
}
document.addEventListener("copy", handleCopy, true);
})();