Add controls to compare commits.
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// ==UserScript==
// @name GitHub Commit Compare
// @namespace https://github.com/jerone/UserScripts
// @description Add controls to compare commits.
// @author jerone
// @contributor darkred
// @copyright 2017+, jerone (https://github.com/jerone)
// @license CC-BY-NC-SA-4.0; https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
// @license GPL-3.0-or-later; http://www.gnu.org/licenses/gpl-3.0.txt
// @homepage https://github.com/jerone/UserScripts/tree/master/GitHub_Commit_Compare
// @homepageURL https://github.com/jerone/UserScripts/tree/master/GitHub_Commit_Compare
// @supportURL https://github.com/jerone/UserScripts/issues
// @contributionURL https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=VCYMHWQ7ZMBKW
// @icon https://github.githubassets.com/pinned-octocat.svg
// @include https://github.com/*/*/commits
// @include https://github.com/*/*/commits/*
// @exclude https://github.com/*/*.diff
// @exclude https://github.com/*/*.patch
// @version 0.0.3
// @grant none
// ==/UserScript==
(function () {
function addButton() {
var nav;
if ((nav = document.querySelector('.file-navigation'))) {
// Check if our group of buttons are already attached.
// Remove it, as the 'old' buttons don't have events anymore.
const e = document.getElementById('GitHubCommitCompareGroup');
if (e) {
e.parentElement.removeChild(e);
}
Array.from(document.querySelectorAll('.GitHubCommitCompareButtonAB')).forEach(function (b) {
b.parentElement.removeChild(b);
});
const c = document.createElement('input');
c.type = 'checkbox';
c.addEventListener('change',
function () {
const bb = document.querySelectorAll('.GitHubCommitCompareButtonAB');
if (this.checked) {
if (bb.length === 0) {
addCompareButtons();
} else {
Array.from(bb).forEach(function (b) {
b.classList.remove('d-none');
});
}
} else {
Array.from(bb).forEach(function (b) {
b.classList.add('d-none');
});
}
const bbb = document.getElementById('GitHubCommitCompareButton');
if (bbb) bbb.classList.remove('disabled');
});
const l = document.createElement('label');
l.classList.add('tooltipped', 'tooltipped-n');
l.setAttribute('aria-label', 'Show commit compare buttons');
l.style.cssText = `
float: left;
padding: 3px 10px;
font-size: 12px;
font-weight: 600;
line-height: 20px;
color: #24292e;
vertical-align: middle;
background-color: #fff;
border: 1px solid rgba(27,31,35,0.2);
border-right: 0;
border-top-left-radius: 3px;
border-bottom-left-radius: 3px;
`;
l.appendChild(c);
const p = document.createElementNS('http://www.w3.org/2000/svg', 'path');
p.setAttributeNS(null,
'd',
'M5 12H4c-.27-.02-.48-.11-.69-.31-.21-.2-.3-.42-.31-.69V4.72A1.993 1.993 0 0 0 2 1a1.993 1.993 0 0 0-1 3.72V11c.03.78.34 1.47.94 2.06.6.59 1.28.91 2.06.94h1v2l3-3-3-3v2zM2 1.8c.66 0 1.2.55 1.2 1.2 0 .65-.55 1.2-1.2 1.2C1.35 4.2.8 3.65.8 3c0-.65.55-1.2 1.2-1.2zm11 9.48V5c-.03-.78-.34-1.47-.94-2.06-.6-.59-1.28-.91-2.06-.94H9V0L6 3l3 3V4h1c.27.02.48.11.69.31.21.2.3.42.31.69v6.28A1.993 1.993 0 0 0 12 15a1.993 1.993 0 0 0 1-3.72zm-1 2.92c-.66 0-1.2-.55-1.2-1.2 0-.65.55-1.2 1.2-1.2.65 0 1.2.55 1.2 1.2 0 .65-.55 1.2-1.2 1.2z');
const s = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
s.classList.add('octicon', 'octicon-diff');
s.setAttributeNS(null, 'height', 16);
s.setAttributeNS(null, 'width', 14);
s.setAttributeNS(null, 'viewBox', '0 0 14 16');
s.appendChild(p);
const a = document.createElement('a');
a.id = 'GitHubCommitCompareButton';
a.classList.add('btn', 'btn-sm', 'tooltipped', 'tooltipped-n', 'disabled');
a.setAttribute('href', '#');
a.setAttribute('rel', 'nofollow');
a.setAttribute('aria-label', 'Compare these commits');
a.style.cssText = `
border-top-left-radius: 0;
border-bottom-left-radius: 0;
font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
`;
a.appendChild(s);
a.appendChild(document.createElement("span"));
const g = document.createElement('div');
g.id = 'GitHubCommitCompareGroup';
g.classList.add('float-right');
g.appendChild(l);
g.appendChild(a);
nav.appendChild(g);
}
}
function updateRadioButtons() {
var compareAdisabled = true;
var compareBdisabled = false;
const compares = document.querySelectorAll('.GitHubCommitCompareButtonAB');
Array.from(compares).forEach(function (compare) {
const compareA = compare.querySelector('[name="GitHubCommitCompareButtonA"]');
const compareB = compare.querySelector('[name="GitHubCommitCompareButtonB"]');
compareA.disabled = compareAdisabled;
compareA.parentNode.classList.toggle('disabled', compareAdisabled);
if (compareA.checked) {
compareBdisabled = true;
}
if (compareB.checked) {
compareAdisabled = false;
}
compareB.disabled = compareBdisabled;
compareB.parentNode.classList.toggle('disabled', compareBdisabled);
});
updateCompareButton();
}
function updateCompareButton() {
const repo = document.querySelector('meta[property="og:url"]').content;
const compareA = document.querySelector('.GitHubCommitCompareButtonAB [name="GitHubCommitCompareButtonA"]:checked');
const hashA = compareA.parentNode.parentNode.parentNode.querySelector('clipboard-copy').value;
const compareB = document.querySelector('.GitHubCommitCompareButtonAB [name="GitHubCommitCompareButtonB"]:checked');
const hashB = compareB.parentNode.parentNode.parentNode.querySelector('clipboard-copy').value;
const a = document.getElementById('GitHubCommitCompareButton');
a.setAttribute('href', `${repo}/compare/${hashA}...${hashB}`);
a.querySelector('span').textContent = ` ${hashA.substring(0, 7)}...${hashB.substring(0, 7)}`;
//localStorage.setItem('GitHubCommitCompareButtonHashA', hashA);
//localStorage.setItem('GitHubCommitCompareButtonHashB', hashB);
}
function addCompareButtons() {
const commits = document.querySelectorAll('.commits-list-item .commit-links-cell');
Array.from(commits).forEach(function (item, index) {
const c1 = document.createElement('input');
c1.name = 'GitHubCommitCompareButtonA';
c1.type = 'radio';
c1.addEventListener('change', updateRadioButtons);
if (index === 1) c1.checked = true;
const l1 = document.createElement('label');
l1.classList.add('btn', 'btn-outline', 'BtnGroup-item', 'tooltipped', 'tooltipped-s');
l1.setAttribute('aria-label', 'Choose a base commit');
l1.appendChild(c1);
const c2 = document.createElement('input');
c2.name = 'GitHubCommitCompareButtonB';
c2.type = 'radio';
c2.addEventListener('change', updateRadioButtons);
if (index === 0) c2.checked = true;
const l2 = document.createElement('label');
l2.classList.add('btn', 'btn-outline', 'BtnGroup-item', 'tooltipped', 'tooltipped-s');
l2.setAttribute('aria-label', 'Choose a head commit');
l2.appendChild(c2);
// const p3 = document.createElementNS('http://www.w3.org/2000/svg', 'path');
// p3.setAttributeNS(null,
//'d',
//'M5 12H4c-.27-.02-.48-.11-.69-.31-.21-.2-.3-.42-.31-.69V4.72A1.993 1.993 0 0 0 2 1a1.993 1.993 0 0 0-1 3.72V11c.03.78.34 1.47.94 2.06.6.59 1.28.91 2.06.94h1v2l3-3-3-3v2zM2 1.8c.66 0 1.2.55 1.2 1.2 0 .65-.55 1.2-1.2 1.2C1.35 4.2.8 3.65.8 3c0-.65.55-1.2 1.2-1.2zm11 9.48V5c-.03-.78-.34-1.47-.94-2.06-.6-.59-1.28-.91-2.06-.94H9V0L6 3l3 3V4h1c.27.02.48.11.69.31.21.2.3.42.31.69v6.28A1.993 1.993 0 0 0 12 15a1.993 1.993 0 0 0 1-3.72zm-1 2.92c-.66 0-1.2-.55-1.2-1.2 0-.65.55-1.2 1.2-1.2.65 0 1.2.55 1.2 1.2 0 .65-.55 1.2-1.2 1.2z');
// const s3 = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
// s3.classList.add('octicon', 'octicon-diff');
// s3.setAttributeNS(null, 'height', 16);
// s3.setAttributeNS(null, 'width', 14);
// s3.setAttributeNS(null, 'viewBox', '0 0 14 16');
// s3.appendChild(p3);
// const l3 = document.createElement('a');
// l3.classList.add('btn', 'btn-outline', 'BtnGroup-item', 'tooltipped', 'tooltipped-sw');
// l3.setAttribute('aria-label', 'TODO');
// l3.appendChild(s3);
const gg = document.createElement('div');
gg.classList.add('GitHubCommitCompareButtonAB', 'commit-links-group', 'BtnGroup');
gg.appendChild(l1);
gg.appendChild(l2);
//gg.appendChild(l3);
//item.style.width = '350px';
if (item.querySelector('.muted-link')) { // Insert after number of comments button.
item.insertBefore(gg, item.querySelector('.muted-link').nextSibling);
} else {
item.insertBefore(gg, item.firstChild);
}
});
updateRadioButtons(); // Update radio buttons.
}
// Init.
addButton();
// Pjax.
document.addEventListener('pjax:end', addButton);
})();