GitHub Diff File Toggle

A userscript that adds global diff file toggles

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name        GitHub Diff File Toggle
// @version     0.1.3
// @description A userscript that adds global diff file toggles
// @license     MIT
// @author      Rob Garrison
// @namespace   https://github.com/Mottie
// @match       https://github.com/*
// @run-at      document-idle
// @grant       none
// @require     https://greasyfork.org/scripts/28721-mutations/code/mutations.js?version=1108163
// @require     https://greasyfork.org/scripts/398877-utils-js/code/utilsjs.js?version=1079637
// @icon        https://github.githubassets.com/pinned-octocat.svg
// @supportURL  https://github.com/Mottie/GitHub-userscripts/issues

// ==/UserScript==

/* global $ $$ on debounce make */
(() => {
	"use strict";

	let timer;
	let busy = false;

	const setToggleStyle = state => {
		const mainToggle = $(".ghdt-toggle");
		mainToggle.classList.toggle("ghdt-selected", state);
		mainToggle.style = state
			? "background-color: var(--color-btn-selected-bg);"
			: "";
	};

	const buildButton = () => {
		if (!$(".ghdt-toggle")) {
			const button = make({
				el: "button",
				className: "btn btn-sm ghdt-toggle tooltipped tooltipped-s float-right",
				text: "Toggle viewed",
				attrs: {
					"aria-label": "Toggle all viewed files"
				}
			});
			on(button, "click", event => {
				toggle(document, !event.target.classList.contains("ghdt-selected"));
			});
			$("#files.diff-view")?.prepend(button);
		}
		// Update toggle button state after initialized; timer for progressive
		// loading
		clearTimeout(timer);
		timer = setTimeout(() => {
			if ($$(".js-reviewed-checkbox").every(el => el.checked)) {
				setToggleStyle(true);
			}
		}, 1000);
	};

	const toggle = (target, state) => {
		$$(".js-reviewed-checkbox").forEach(checkbox => {
			if (target !== checkbox && checkbox.checked !== state) {
				checkbox.click();
			}
		});
		setToggleStyle(state);
	};

	const handleChange = event => {
		const { target, altKey, shiftKey } = event;
		const anyModifier = altKey || shiftKey;
		if (!busy && anyModifier && target.matches(".js-reviewed-checkbox")) {
			busy = true;
			toggle(target, target.checked);
			setTimeout(() => {
				busy = false;
			});
		}
	};

	const init = () => {
		if ($("#files.diff-view") || $(".pr-toolbar")) {
			buildButton();
		}
	};

	on(document, "ghmo:container ghmo:diff", init);
	on(document, "click", debounce(handleChange));
	on(document, "keydown", debounce(handleChange));
	init();
})();