Shows a navigation bar on AtCoder contest pages for jumping to problems.
Version au
// ==UserScript==
// @name atcoder-problem-navigator
// @namespace https://github.com/yoshrc
// @version 1.1
// @description Shows a navigation bar on AtCoder contest pages for jumping to problems.
// @author yoshrc
// @match https://atcoder.jp/contests/*
// @grant none
// @require http://code.jquery.com/jquery-3.3.1.min.js
// ==/UserScript==
(function() {
'use strict';
const contest = location.href.match(/^https:\/\/atcoder\.jp\/contests\/([^\/]+)/)[1];
const key = 'atcoder-problem-navigator-' + contest;
if (location.href.match(/^https:\/\/atcoder\.jp\/contests\/([^\/]+)\/tasks\/?$/)) {
const problems = [];
const $rows = $('tbody>tr');
for (let i = 0; i < $rows.length; i++) {
const $links = $rows.eq(i).find('a');
const href = $links.eq(0).attr('href');
const text = $links.eq(0).text() + ' - ' + $links.eq(1).text();
problems.push({
href: href,
text: text
});
}
localStorage[key] = JSON.stringify(problems);
}
if (key in localStorage) {
let problems = JSON.parse(localStorage[key]);
const $problemsBar = $('<ul class="nav nav-tabs"></ul>');
for (let i = 0; i < problems.length; i++) {
const $link = $('<a style="margin-left: 10px; margin-right: 10px; white-space: nowrap"></a>')
.attr('href', problems[i].href)
.text(problems[i].text);
$problemsBar.append($('<span> </span>').append($link));
}
$('#contest-nav-tabs').append($problemsBar);
}
})();