A userscript that adds filters that toggle the view of repo files by extension
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// ==UserScript==
// @name GitHub Files Filter
// @version 1.0.3
// @description A userscript that adds filters that toggle the view of repo files by extension
// @license MIT
// @author Rob Garrison
// @namespace https://github.com/Mottie
// @include https://github.com/*
// @run-at document-idle
// @grant GM_getValue
// @grant GM_setValue
// @require https://greasyfork.org/scripts/28721-mutations/code/mutations.js?version=596445
// @icon https://assets-cdn.github.com/pinned-octocat.svg
// ==/UserScript==
(() => {
"use strict";
let settings,
list = {};
const types = {
// including ":" in key since it isn't allowed in a file name
":all": {
// return false to prevent adding files under this type
is: () => false,
text: "\u00ABall\u00BB"
},
":noExt": {
is: name => !/\./.test(name),
text: "\u00ABno-ext\u00BB"
},
":dot": {
// this will include ".travis.yml"... should we add to "yml" instead?
is: name => /^\./.test(name),
text: "\u00ABdot-files\u00BB"
},
":min": {
is: name => /\.min\./.test(name),
text: "\u00ABmin\u00BB"
}
},
// TODO: add toggle for submodule and dot-folders
folderIconClasses = [
".octicon-file-directory",
".octicon-file-symlink-directory",
".octicon-file-submodule"
].join(",");
// default to all file types visible; remember settings between sessions
list[":all"] = true; // list gets cleared in buildList function
settings = GM_getValue("gff-filter-settings", list);
function updateFilter(event) {
event.preventDefault();
event.stopPropagation();
const el = event.target;
toggleBlocks(
el.getAttribute("data-ext"),
el.classList.contains("selected") ? "hide" : "show"
);
}
function updateSettings(name, mode) {
settings[name] = mode === "show";
GM_setValue("gff-filter-settings", settings);
}
function updateAllButton() {
if ($(".gff-filter")) {
const buttons = $(".file-wrap .gff-filter"),
filters = $$(".btn:not(.gff-all)", buttons),
selected = $$(".btn:not(.gff-all).selected", buttons);
// set "all" button
$(".gff-all", buttons).classList.toggle(
"selected",
filters.length === selected.length
);
}
}
function toggleImagePreview(ext, mode) {
if ($(".ghip-image-previews")) {
let selector = "a",
hasType = types[ext];
if (!hasType) {
selector += `[href$="${ext}"]`;
}
$$(`.ghip-image-previews ${selector}`).forEach(el => {
if (!$(".ghip-folder", el)) {
if (hasType && ext !== ":all") {
// image preview includes the filename
let elm = $(".ghip-file-name", el);
if (elm && !hasType.is(elm.textContent)) {
return;
}
}
el.style.display = mode === "show" ? "" : "none";
}
});
}
}
function toggleRow(el, mode) {
const row = closest("tr.js-navigation-item", el);
// don't toggle folders
if (row && !$(folderIconClasses, row)) {
row.style.display = mode === "show" ? "" : "none";
}
}
function toggleAll(mode) {
const files = $(".file-wrap");
// Toggle "all" blocks
$$("td.content .js-navigation-open", files).forEach(el => {
toggleRow(el, mode);
});
// update filter buttons
$$(".gff-filter .btn", files).forEach(el => {
el.classList.toggle("selected", mode === "show");
});
updateSettings(":all", mode);
}
function toggleFilter(filter, mode) {
const files = $(".file-wrap"),
elm = $(`.gff-filter .btn[data-ext="${filter}"]`, files);
/* list[filter] contains an array of file names */
list[filter].forEach(name => {
const el = $(`a[title="${name}"]`, files);
if (el) {
toggleRow(el, mode);
}
});
if (elm) {
elm.classList.toggle("selected", mode === "show");
}
updateSettings(filter, mode);
}
function toggleBlocks(filter, mode) {
if (filter === ":all") {
toggleAll(mode);
} else if (list[filter]) {
toggleFilter(filter, mode);
}
// update view for github-image-preview.user.js
toggleImagePreview(filter, mode);
updateAllButton();
}
function buildList() {
list = {};
Object.keys(types).forEach(item => {
if (item !== ":all") {
list[item] = [];
}
});
// get all files
$$("table.files tr.js-navigation-item").forEach(file => {
if ($("td.icon .octicon-file", file)) {
let ext,
link = $("td.content .js-navigation-open", file),
txt = (link.title || link.textContent || "").trim(),
name = txt.split("/").slice(-1)[0];
// test extension types; fallback to regex extraction
ext = Object.keys(types).find(item => {
return types[item].is(name);
}) || /[^./\\]*$/.exec(name)[0];
if (ext) {
if (!list[ext]) {
list[ext] = [];
}
list[ext].push(txt);
}
}
});
}
function sortList() {
return Object.keys(list).sort((a, b) => {
// move ":" filters to the beginning, then sort the rest of the
// extensions; test on https://github.com/rbsec/sslscan, where
// the ".1" extension *was* appearing between ":" filters
if (a[0] === ":") {
return -1;
}
if (b[0] === ":") {
return 1;
}
return a > b;
});
}
function makeFilter() {
let filters = 0;
// get length, but don't count empty arrays
Object.keys(list).forEach(ext => {
filters += list[ext].length > 0 ? 1 : 0;
});
// Don't bother if only one extension is found
const files = $(".file-wrap");
if (files && filters > 1) {
filters = $(".gff-filter-wrapper");
if (!filters) {
filters = document.createElement("div");
// "commitinfo" allows GitHub-Dark styling
filters.className = "gff-filter-wrapper commitinfo";
filters.style = "padding:3px 5px 2px;border-bottom:1px solid #eaecef";
files.insertBefore(filters, files.firstChild);
filters.addEventListener("click", updateFilter);
}
fixWidth();
buildHTML();
applyInitSettings();
}
}
function buildButton(name, label, ext, text) {
return `<button type="button" ` +
`class="btn btn-sm selected BtnGroup-item tooltipped tooltipped-n` +
(name ? name : "") + `" ` +
`data-ext="${ext}" aria-label="${label}">${text}</button>`;
}
function buildHTML() {
let len,
html = `<div class="BtnGroup gff-filter">` +
// add a filter "all" button to the beginning
buildButton(" gff-all", "Toggle all files", ":all", types[":all"].text);
sortList().forEach(ext => {
len = list[ext].length;
if (len) {
html += buildButton("", len, ext, types[ext] && types[ext].text || ext);
}
});
// prepend filter buttons
$(".gff-filter-wrapper").innerHTML = html + "</div>";
}
function getWidth(el) {
return parseFloat(window.getComputedStyle(el).width);
}
// lock-in the table cell widths, or the navigation up link jumps when you
// hide all files... using percentages in case someone is using GitHub wide
function fixWidth() {
let group, width,
html = "",
table = $("table.files"),
tableWidth = getWidth(table),
cells = $$("tbody:last-child tr:last-child td", table);
if (table && cells.length > 1 && !$("colgroup", table)) {
group = document.createElement("colgroup");
table.insertBefore(group, table.childNodes[0]);
cells.forEach(el => {
// keep two decimal point accuracy
width = parseInt(getWidth(el) / tableWidth * 1e4, 10) / 100;
html += `<col style="width:${width}%">`;
});
group.innerHTML = html;
}
}
function applyInitSettings() {
// list doesn't include type.all entry
if (settings[":all"] === false) {
toggleBlocks(":all", "hide");
} else {
Object.keys(list).forEach(name => {
if (settings[name] === false) {
toggleBlocks(name, "hide");
}
});
}
}
function init() {
if ($("table.files")) {
buildList();
makeFilter();
}
}
function $(str, el) {
return (el || document).querySelector(str);
}
function $$(str, el) {
return Array.from((el || document).querySelectorAll(str));
}
function closest(selector, el) {
while (el && el.nodeType === 1) {
if (el.matches(selector)) {
return el;
}
el = el.parentNode;
}
return null;
}
document.addEventListener("ghmo:container", () => {
// init after a short delay to allow rendering of file list
setTimeout(() => {
init();
}, 200);
});
init();
})();