A userscript that adds a toggle to show or hide diff files
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// ==UserScript==
// @name GitHub Diff File Toggle
// @version 1.1.1
// @description A userscript that adds a toggle to show or hide diff files
// @license https://creativecommons.org/licenses/by-sa/4.0/
// @namespace https://github.com/StylishThemes
// @include https://github.com/*
// @grant GM_addStyle
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_registerMenuCommand
// @run-at document-end
// @author StylishThemes
// ==/UserScript==
/* global GM_addStyle, GM_getValue, GM_setValue, GM_registerMenuCommand */
/* jshint esnext:true, unused:true */
(function() {
"use strict";
/*
This code is also part of the GitHub-Dark Script
(https://github.com/StylishThemes/GitHub-Dark-Script)
Extracted out into a separate userscript in case users only want to add this
functionality
*/
let busy = false,
mutationTimer;
const icon =
`<svg class="octicon" xmlns="http://www.w3.org/2000/svg" width="10" height="6.5" viewBox="0 0 10 6.5">
<path d="M0 1.5L1.5 0l3.5 3.7L8.5.0 10 1.5 5 6.5 0 1.5z"/>
</svg>`;
// Add file diffs toggle
function addFileToggle() {
busy = true;
const files = $$("#files .file-actions");
let button = document.createElement("button");
button.type = "button";
button.className = "ghd-file-toggle btn btn-sm tooltipped tooltipped-n";
button.setAttribute("aria-label", "Click to Expand or Collapse file");
button.setAttribute("tabindex", "-1");
button.innerHTML = icon;
files.forEach(el => {
if (!$(".ghd-file-toggle", el)) {
el.appendChild(button.cloneNode(true));
}
});
// start with all but first entry collapsed
if (files.length) {
if (/^t/.test(GM_getValue("accordion"))) {
toggleFile({
target: $(".ghd-file-toggle")
}, true);
}
}
busy = false;
}
function toggleSibs(target, state) {
var el,
isCollapsed = state || target.classList.contains("ghd-file-collapsed"),
toggles = $$(".file"),
indx = toggles.length;
while (indx--) {
el = toggles[indx];
if (el !== target) {
el.classList.toggle("ghd-file-collapsed", isCollapsed);
}
}
}
function toggleFile(event, init) {
busy = true;
var accordion = GM_getValue("accordion"),
el = closest(event.target, ".file");
if (accordion) {
if (!init) {
el.classList.toggle("ghd-file-collapsed");
}
toggleSibs(el, true);
} else {
el.classList.toggle("ghd-file-collapsed");
// shift+click toggle all files!
if (event.shiftKey) {
toggleSibs(el);
}
}
document.activeElement.blur();
busy = false;
}
function addBindings() {
$("body").addEventListener("click", function(event) {
var target = event.target;
if (target && target.classList.contains("ghd-file-toggle")) {
toggleFile(event);
return false;
}
});
}
function $(str, el) {
return (el || document).querySelector(str);
}
function $$(str, el) {
return Array.from((el || document).querySelectorAll(str));
}
function closest(el, selector) {
while (el && el.nodeName !== "BODY" && !el.matches(selector)) {
el = el.parentNode;
}
return el && el.matches(selector) ? el : [];
}
// Don't initialize if GitHub Dark Script is active
if (!$("#ghd-menu")) {
GM_addStyle(`
.ghd-file-collapsed > :not(.file-header) { display: none !important; }
.ghd-file-collapsed .ghd-file-toggle svg {
-webkit-transform:rotate(90deg); transform:rotate(90deg);
}
.ghd-file-toggle svg.octicon {
pointer-events: none;
vertical-align: middle;
}
`);
$$(
`#js-repo-pjax-container,
#js-pjax-container,
.js-preview-body,
.js-diff-progressive-container`
).forEach(target => {
new MutationObserver(mutations => {
mutations.forEach(mutation => {
// preform checks before adding code wrap to minimize function calls
if (!busy && mutation.target === target) {
clearTimeout(mutationTimer);
mutationTimer = setTimeout(() => {
addFileToggle();
}, 400);
}
});
}).observe(target, {
childList: true,
subtree: true
});
});
addBindings();
addFileToggle();
}
// Add GM options
GM_registerMenuCommand("GitHub Diff File Toggle", () => {
var result = "" + GM_getValue("accordion"),
val = prompt("Accordion Mode? (true/false):", result);
if (val) {
result = /^t/.test(val);
GM_setValue("accordion", result);
}
});
})();