A userscript that adds a button to toggle the GitHub Wiki sidebar
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// ==UserScript==
// @name GitHub Toggle Wiki Sidebar
// @version 1.0.0
// @description A userscript that adds a button to toggle the GitHub Wiki sidebar
// @license https://creativecommons.org/licenses/by-sa/4.0/
// @namespace http://github.com/Mottie
// @include https://github.com/*
// @run-at document-idle
// @grant GM_getValue
// @grant GM_setValue
// @author Rob Garrison
// ==/UserScript==
/* global GM_getValue, GM_setValue */
/*jshint unused:true */
(function() {
"use strict";
var busy = false,
// sidebar state
isHidden = false,
toggleIcon = "<svg class='octicon' xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'><path fill='none' stroke='currentColor' stroke-miterlimit='10' d='M.5 3.5h10v9H.5z'/><path fill='currentColor' stroke='currentColor' stroke-miterlimit='10' d='M7 7.8l1.5-1.2V9zM10.5 3.5h5v9h-5v-9zm4.3 4.3l-4.3-3V11l4.3-3.2z'/></svg>",
addToggle = function() {
if (document.querySelector("#wiki-wrapper") && !document.querySelector(".ghtws-button")) {
busy = true;
var el = document.querySelector(".gh-header-actions") || document.querySelector(".gh-header-title"),
button = document.createElement("div");
button.className = "btn btn-sm tooltipped tooltipped-s ghtws-button";
button.innerHTML = toggleIcon;
button.setAttribute("aria-label", "Toggle Sidebar");
if (el.nodeName === "H1") {
// non-editable wiki pages
button.style.float = "right";
el = el.parentNode;
}
// editable wikis have a "header-actions" area
// prepend button
el.insertBefore(button, el.childNodes[0]);
if (isHidden) {
toggleSidebar();
}
busy = false;
}
},
toggleSidebar = function() {
busy = true;
var sidebar = document.querySelector("#wiki-rightbar"),
wrapper = sidebar && sidebar.parentNode;
if (sidebar) {
if (isHidden) {
sidebar.style.display = "none";
wrapper.classList.remove("has-rightbar");
} else {
sidebar.style.display = "";
wrapper.classList.add("has-rightbar");
}
GM_setValue("sidebar-state", isHidden);
}
busy = false;
},
regexPath = /path/i,
regexSVG = /svg/i,
toggleEvent = function(event) {
var target = event.target;
// delegated event binding may fire on stuff inside the button...
// also, the nodename may not be uppercase
if (target.nodeName && regexPath.test(target.nodeName || "")) {
target = target.parentNode;
}
if (target && regexSVG.test(target.nodeName || "")) {
target = target.parentNode;
}
if (target && target.classList.contains("ghtws-button")) {
isHidden = !isHidden;
toggleSidebar();
}
},
init = function() {
busy = true;
isHidden = GM_getValue("sidebar-state", false);
document.querySelector("body").addEventListener("click", toggleEvent);
addToggle();
// busy = false from addToggle();
},
// DOM targets - to detect GitHub dynamic ajax page loading
targets = document.querySelectorAll([
"#js-repo-pjax-container",
"#js-pjax-container"
].join(","));
// update TOC when content changes
Array.prototype.forEach.call(targets, function(target) {
new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
// preform checks before adding code wrap to minimize function calls
if (!busy && mutation.target === target) {
addToggle();
}
});
}).observe(target, {
childList: true,
subtree: true
});
});
init();
})();