Adds colors to files by type, displays small images in place of file-type icons in a repository source tree
// ==UserScript==
// @name GitHub file list beautifier
// @description Adds colors to files by type, displays small images in place of file-type icons in a repository source tree
// @namespace wOxxOm.scripts
// @include https://github.com/*
// @version 3.0.0
// @run-at document-start
// @grant GM_getValue
// @grant GM_setValue
// ==/UserScript==
/* jshint lastsemic:true, multistr:true, laxbreak:true, -W030, -W041, -W084 */
// Your changes will be remembered in script database even after a forced update of the script
var config = userConfig({
iconSize: 24,
colorSeed1: 13,
colorSeed2: 1299721,
colorSeed3: 179426453,
});
(document.head || document.documentElement).insertAdjacentHTML('beforeend',
'<style id="wOxxOm-GHB">\
.wOxxOm-image-icon {\
max-width:' + config.iconSize + 'px; max-height:' + config.iconSize + 'px;\
width:auto; height:auto; margin:auto;\
position:absolute; left:0; top:0; right:0; bottom:0 }\
.wOxxOm-image-td {\
position:relative; padding:0; min-width:' + (config.iconSize+4) + 'px; line-height:inherit }\
a[file-type=":folder"] { font-weight: bold }\
</style>'
);
var filetypes = {};
var styledom = document.getElementById('wOxxOm-GHB');
var filesdom = document.getElementsByTagName('table');
var ob = new MutationObserver(GHBsentry);
lazyObserve();
beautify(filesdom[0]);
document.addEventListener('DOMContentLoaded', function() { beautify(filesdom[0]) });
function GHBsentry(mutations) {
if (!/^\/[^\/]+\/[^\/]+(\/tree\/.*)?$/.test(location.pathname)) {
ob.disconnect();
lazyObserve();
return;
}
if (mutations.length == 1 && !mutations[0].addedNodes.length || !filesdom[0])
return;
//console.log([].concat.apply([], mutations.map(m => [].slice.call(m.addedNodes))));
for (var i=0, ml=mutations.length, m; i<ml && (m=mutations[i]); i++) {
for (var j=0, added=m.addedNodes, nl=added.length, n; j<nl && (n=added[j]); j++) {
if (n.nodeType != 3) {
if (n.localName == 'a' && /\/(tree|blob)\//.test(n.href) && !n.hasAttribute('file-type')
|| n.localName == 'div' && n.matches('.file-wrap, .new-discussion-timeline, .repo-file-upload-tree-target')
) {
var table = n.closest('table') || n.querySelector('table');
if (table) {
beautify(table);
ob.disconnect();
lazyObserve();
break;
}
}
}
}
}
}
function lazyObserve() {
// postpone observing until the parser can breathe after the initial burst of activity during page load
setTimeout(function() {
beautify(filesdom[0]);
ob.observe(document, {subtree:true, childList:true});
}, 0);
}
function beautify(container, links) {
if (!container && !links)
return;
//console.log(container.innerHTML);
if (!links) {
var table = container.localName == 'table' ? container : container.querySelector('table');
if (!table)
return;
links = table.getElementsByClassName('js-navigation-open');
}
for (var a, i=0, len=links.length; i<len && (a=links[i++]); ) {
if (!a.href)
continue;
var tr = a.closest('tr');
if (tr && tr.querySelector('.octicon-file-directory')) {
a.setAttribute('file-type', ':folder');
continue;
}
var ext = a.href.match(/\.(\w+)$/);
ext = ext && ext[1] || ':empty';
a.setAttribute('file-type', ext);
if (!filetypes[ext])
addFileTypeStyle(ext);
if (/^(png|jpe?g|bmp|gif|cur|ico)$/.test(ext)) {
var m = a.href.match(/github\.com\/(.+?\/)blob\/(.*)$/);
if (!m)
continue;
var iconCell = a.closest('.js-navigation-item').querySelector('.icon');
var icon = iconCell.querySelector('.octicon-file-text');
if (icon.style.display == 'none')
continue;
icon.style.display = 'none';
icon.insertAdjacentHTML('afterend',
'<img class="wOxxOm-image-icon" src="https://raw.githubusercontent.com/' + m[1] + m[2] + '">');
iconCell.classList.add('wOxxOm-image-td');
}
}
}
function addFileTypeStyle(type) {
filetypes[type] = true;
for (var hash=0, i=0, len=type.length; i<len; i++)
hash = ((hash << 5) - hash) + type.charCodeAt(i);
hash = Math.abs(hash*config.colorSeed1 |0);
var color = 'a[file-type="' + type + '"] { color: hsl(' +
(hash%360) + ',' +
(hash*config.colorSeed2%50 + 50 |0) + '%,' +
(hash*config.colorSeed3%30 + 25 |0) + '%) }';
styledom.appendChild(document.createTextNode(color));
}
function userConfig(params) {
Object.keys(params).forEach(function(k) {
var def = params[k];
var saved = GM_getValue(k, def);
if (saved && saved != def)
params[k] = saved;
});
return params;
}