You can queue the problems you want to revenge!
От
// ==UserScript==
// @name codeforces-problem-queue
// @namespace http://tampermonkey.net/
// @version 0.1
// @description You can queue the problems you want to revenge!
// @author itohdak
// @license MIT
// @match https://codeforces.com/contest/*/problem/*
// @match https://codeforces.com/profile/*
// @grant none
// ==/UserScript==
var max_problem_count = 50;
function getProblemQueue () {
return JSON.parse(localStorage.getItem('problemQueue') || '{}');
}
function setProblemQueue (problemQueue) {
localStorage.setItem('problemQueue', JSON.stringify(problemQueue));
}
function addProblem (problemTitle, problemContent) {
var problemQueue = getProblemQueue();
if(problemTitle in problemQueue) {
return "Already in queue.";
} else if(Object.keys(problemQueue).length >= max_problem_count) {
return "Reached the maximum number of problems you can queue.</br>Let\'s solve the problems!:)";
} else {
problemQueue[problemTitle] = problemContent;
setProblemQueue(problemQueue);
return "Added successfully.";
}
}
function deleteProblem (problemTitle) {
var problemQueue = getProblemQueue();
delete problemQueue[problemTitle];
setProblemQueue(problemQueue);
}
function setAddProblemButton () {
// Create a button in a container div.
var div = document.createElement('div');
div.setAttribute('style', 'margin:1em;font-size:0.8em;');
div.setAttribute('id', 'addProblemContainer');
var btn = document.createElement('input');
btn.setAttribute('type', 'submit');
btn.setAttribute('value', 'Add this problem to my problem queue');
btn.setAttribute('style', 'padding:0 0.5em;');
btn.setAttribute('id', 'addProblemButton');
div.appendChild(btn);
document.getElementsByClassName('header')[0].appendChild(div);
// Activate the newly added button.
document.getElementById('addProblemButton').addEventListener(
'click', buttonClickAction, false
);
}
function buttonClickAction (event) {
var problemTitle = document.getElementsByClassName('title')[0].innerHTML
var contestName = document.getElementsByClassName('left')[0].querySelectorAll('a')[0].text
var msg = addProblem(problemTitle, {'contestName': contestName, 'problemLink': location.href});
var p = document.createElement('p');
p.innerHTML = '<font color="red">' + msg + '</font>';
var cntr = document.getElementById('addProblemContainer');
if(cntr.children.length > 1) cntr.removeChild(cntr.childNodes[1]);
cntr.appendChild(p);
}
function createCodeforcesLikeRoundBox () {
var roundBox = document.createElement('div');
roundBox.setAttribute('class', 'roundbox sidebox top-contributed');
roundBox.setAttribute('style', 'margin-top:1em;');
var roundBoxLT = document.createElement('div');
roundBoxLT.setAttribute('class', 'roundbox-lt');
roundBoxLT.innerHTML = ' ';
var roundBoxRT = document.createElement('div');
roundBoxRT.setAttribute('class', 'roundbox-rt');
roundBoxRT.innerHTML = ' ';
var roundBoxLB = document.createElement('div');
roundBoxLB.setAttribute('class', 'roundbox-lb');
roundBoxLB.innerHTML = ' ';
var roundBoxRB = document.createElement('div');
roundBoxRB.setAttribute('class', 'roundbox-rb');
roundBoxRB.innerHTML = ' ';
roundBox.appendChild(roundBoxLT);
roundBox.appendChild(roundBoxRT);
// roundBox.appendChild(roundBoxLB);
// roundBox.appendChild(roundBoxRB);
return roundBox;
}
function createCodeforcesLikeDeleteButton (problemTitle) {
var deleteBtn = document.createElement('a');
deleteBtn.setAttribute('class', 'delete-virtual-contest');
deleteBtn.setAttribute('title', 'delete [' + problemTitle + ']');
// deleteBtn.setAttribute('href', '#');
var img = document.createElement('img');
img.setAttribute('width', '12px;');
img.setAttribute('src', '//sta.codeforces.com/s/!/images/delete.png');
deleteBtn.appendChild(img);
return deleteBtn;
}
function setProblemList () {
var roundBox = createCodeforcesLikeRoundBox();
var title = document.createElement('div');
title.setAttribute('class', 'caption titled');
title.innerHTML = '→ Problem queue';
roundBox.appendChild(title);
var table = document.createElement('table');
table.setAttribute('class', 'rtable ');
table.setAttribute('id', 'problemQueue');
roundBox.appendChild(table);
var tbody = document.createElement('tbody');
table.appendChild(tbody);
var header = document.createElement('tr');
var thIdx = document.createElement('th');
thIdx.textContent = '#';
var thPblm = document.createElement('th');
thPblm.textContent = 'Problem';
header.appendChild(thIdx);
header.appendChild(thPblm);
header.appendChild(document.createElement('th'));
tbody.appendChild(header);
var num = 1;
var problemQueue = getProblemQueue();
for (let key in problemQueue) {
var tr = document.createElement('tr');
// add index
var tdIdx = document.createElement('td');
tdIdx.innerText = num;
if(num%2) tdIdx.setAttribute('class', 'dark');
// add problem link
var tdLink = document.createElement('td');
if(num%2) tdLink.setAttribute('class', 'dark');
tdLink.innerHTML = '<a href="' + problemQueue[key].problemLink + '" title="' + problemQueue[key].contestName + '">' + key + '</a>';
// add delete button
var tdBtn = document.createElement('td');
if(num%2) tdBtn.setAttribute('class', 'dark');
tdBtn.appendChild(createCodeforcesLikeDeleteButton(key));
tr.appendChild(tdIdx);
tr.appendChild(tdLink);
tr.appendChild(tdBtn);
tbody.appendChild(tr);
num++;
}
document.getElementById('pageContent').appendChild(roundBox);
document.querySelectorAll('.delete-virtual-contest').forEach ( (btn) => btn.addEventListener (
'click', {obj: btn, handleEvent: deleteAction}, false
));
}
function deleteAction (event) {
var tr = this.obj.parentNode.parentNode;
var problemTitle = tr.querySelectorAll('a')[0].text;
deleteProblem(problemTitle);
tr.parentNode.deleteRow(tr.sectionRowIndex);
}
(function() {
var url = window.location.href;
if( url.match(new RegExp('/codeforces.com\/contest\/(.*)\/problem\/(.*)')) != null ) {
setAddProblemButton();
} else if ( url.match(new RegExp('/codeforces.com\/profile\/(.*)')) != null) {
setProblemList();
}
})();