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AtCoder Listing Tasks

Click [Tasks] tab to open a drop-down list linked to each task. / [問題]タブをクリックすると、各問題のページに移動できるドロップダウンリストを表示します。

Versione datata 28/05/2023. Vedi la nuova versione l'ultima versione.

  1. // ==UserScript==
  2. // @name         AtCoder Listing Tasks
  3. // @namespace    https://github.com/luuguas/AtCoderListingTasks
  4. // @version      1.1
  5. // @description  Click [Tasks] tab to open a drop-down list linked to each task. / [問題]タブをクリックすると、各問題のページに移動できるドロップダウンリストを表示します。
  6. // @author       luuguas
  7. // @license      Apache-2.0
  8. // @match        https://atcoder.jp/contests/*
  9. // @exclude      https://atcoder.jp/contests/
  10. // @exclude      https://atcoder.jp/contests/archive
  11. // @grant        none
  12. // ==/UserScript==
  13.  
  14. (function() {
  15.     'use strict';
  16.     const CONTEST_URL = 'https://atcoder.jp/contests/';
  17.     const UNIQUE_TAG = 'user-script-listing-tasks';
  18.     const LIST_MAX_HEIGHT = '760%';
  19.  
  20.     //[問題]タブに本UserScript用のidを追加(タブがなければfalseを返す)
  21.     function AttachId(){
  22.         let tabs = document.getElementById('contest-nav-tabs');
  23.         if(tabs === null){
  24.             return false;
  25.         }
  26.         let tasks_tab = tabs.querySelector('a[href$="tasks"]');
  27.         if(tasks_tab === null){
  28.             return false;
  29.         }
  30.         else{
  31.             tasks_tab.setAttribute('id', UNIQUE_TAG);
  32.             return true;
  33.         }
  34.     }
  35.  
  36.     //[提出結果]タブと同様のドロップダウンリストに変える(中身は空)
  37.     function Togglize(){
  38.         let tasks_tab = document.getElementById(UNIQUE_TAG);
  39.  
  40.         let attr = {
  41.             'class': 'dropdown-toggle',
  42.             'data-toggle': 'dropdown',
  43.             'href': '#',
  44.             'role:': 'button',
  45.             'aria-haspopup': 'true',
  46.             'aria-expanded': 'false',
  47.         };
  48.         for(let [key, value] of Object.entries(attr)){
  49.             tasks_tab.setAttribute(key, value);
  50.         }
  51.  
  52.         let caret = document.createElement('span');
  53.         caret.className = 'caret';
  54.         tasks_tab.appendChild(caret);
  55.  
  56.         let dropdown_menu = document.createElement('ul');
  57.         dropdown_menu.setAttribute('style', 'max-height: ' + LIST_MAX_HEIGHT + '; overflow: visible auto;');
  58.         dropdown_menu.className = 'dropdown-menu';
  59.         tasks_tab.parentNode.appendChild(dropdown_menu);
  60.     }
  61.  
  62.     //リストを追加する
  63.     function AddList(){
  64.         let url = location.href;
  65.         let contest_name = url.split('/')[4];
  66.         let hash = contest_name.search(/[#\?]/);
  67.         if(hash !== -1){
  68.             //ハッシュ(#,?)を除く
  69.             contest_name = contest_name.slice(0, hash);
  70.         }
  71.  
  72.         let tasks_tab_li = document.getElementById(UNIQUE_TAG).parentNode;
  73.         let dropdown_menu = tasks_tab_li.querySelector('.dropdown-menu');
  74.  
  75.         //[問題一覧]の追加
  76.         let all_tasks = document.createElement('li');
  77.         let lang = document.querySelector('meta[http-equiv="Content-Language"]');
  78.         if(lang !== null && lang.getAttribute('content') === 'en'){
  79.             all_tasks.innerHTML = '<a href="' + CONTEST_URL + contest_name + '/tasks"><span class="glyphicon glyphicon-list" aria-hidden="true"></span> All Tasks</a>';
  80.         }
  81.         else{
  82.             all_tasks.innerHTML = '<a href="' + CONTEST_URL + contest_name + '/tasks"><span class="glyphicon glyphicon-list" aria-hidden="true"></span> 問題一覧</a>';
  83.         }
  84.         dropdown_menu.appendChild(all_tasks);
  85.  
  86.         //分割線の追加
  87.         let divider = document.createElement('li');
  88.         divider.className = 'divider';
  89.         dropdown_menu.appendChild(divider);
  90.  
  91.         //https://atcoder.jp/contests/***/tasks から問題のリストを抽出
  92.         let xhr = new XMLHttpRequest();
  93.         xhr.responseType = 'document';
  94.         xhr.onreadystatechange = function(){
  95.             let tasks_tab_li = document.getElementById(UNIQUE_TAG).parentNode;
  96.             let dropdown_menu = tasks_tab_li.querySelector('.dropdown-menu');
  97.  
  98.             if(xhr.readyState === 4){
  99.                 if(xhr.status === 200){
  100.                     let result = xhr.responseXML;
  101.                     let problem_node = result.querySelector('#contest-nav-tabs + .col-sm-12');
  102.                     let problem_list = problem_node.querySelectorAll('table.table tbody tr');
  103.  
  104.                     //問題情報を抽出
  105.                     let list = [];
  106.                     for(let li of problem_list){
  107.                         let td = li.querySelectorAll('td');
  108.                         let problem_url = td[0].firstChild.getAttribute('href');
  109.                         let problem_diff = td[0].firstChild.textContent;
  110.                         let problem_name = td[1].firstChild.textContent;
  111.                         list.push({
  112.                             url: problem_url,
  113.                             diff: problem_diff,
  114.                             name: problem_name,
  115.                         });
  116.                     }
  117.  
  118.                     //リストを追加
  119.                     for(let data of list){
  120.                         let li = document.createElement('li');
  121.                         let a = document.createElement('a');
  122.                         a.setAttribute('href', data.url);
  123.                         a.textContent = data.diff + ' - ' + data.name;
  124.                         li.appendChild(a);
  125.                         dropdown_menu.appendChild(li);
  126.                     }
  127.                     console.log('[AtCoder Listing Tasks] Succeeded!');
  128.                 }
  129.                 else{
  130.                     let li = document.createElement('li');
  131.                     let a = document.createElement('a');
  132.                     a.setAttribute('href', 'javascript:void(0)');
  133.                     a.textContent = '(読み込み失敗)';
  134.                     li.appendChild(a);
  135.                     dropdown_menu.appendChild(li);
  136.                     console.log('[AtCoder Listing Tasks] Failed...');
  137.                 }
  138.             }
  139.         };
  140.         xhr.open('GET', 'https://atcoder.jp/contests/' + contest_name + '/tasks', true);
  141.         xhr.send(null);
  142.     }
  143.  
  144.     let tab_exist = AttachId();
  145.     if(!tab_exist){
  146.         //タブがない場合は終了
  147.         console.log('[AtCoder Listing Tasks] [Tasks] Tab isn\'t exist.');
  148.         return;
  149.     }
  150.     Togglize();
  151.     AddList();
  152.  
  153. })();