// ==UserScript==
// @name         YouTube - whitelist channels in uBlock Origin
// @namespace    https://github.com/gorhill/uBlock
// @version      1.6
// @description  To whitelist YouTube channels in uBlock Origin
// @author       Raymond Hill (gorhill)
// @match        https://*.youtube.com/*
// @grant        none
// @license      http://creativecommons.org/licenses/by-sa/4.0/
// @supportURL  https://github.com/gorhill/uBlock/issues
// ==/UserScript==
// based on https://greasyfork.org/en/scripts/13226-youtube-whitelist-channels-in-ublock-origin
// with adaption from https://greasyfork.org/en/forum/discussion/8985
// First page load
//
var exposeUserInURL = function() {
'use strict';
// To fix issue with user name, parse it from a different query, so
// the following method works currently. Variable channelId will thus
// contain the Youtube user name.
// Replace lines from "var link = document.querySelector ..." to
// "var channelId = ..." with the following code (within "// ---"):
// ---
var link = document.querySelector('[id="watch7-user-header"] a[href^="/user/"]');
if ( link === null ) {
link = document.querySelector('[id="watch7-user-header"] a[href^="/channel/"]');
if ( link === null)
return;
}
var linkHref = link.getAttribute('href');
var linkmatch = linkHref.match(/\/(user|channel)\/(.+)/);
if (linkmatch === null)
return;
var channelId = linkmatch[2];
// ---
// Code below need not be changed
var newArg = channelId !== '' ? 'user=' + encodeURIComponent(channelId) : '';
var matches = location.search.match(/(?:[?&])(user=(?:[^&]+|$))/);
var oldArg = matches !== null ? matches[1] : '';
if ( newArg === oldArg ) {
return;
}
var href = location.href;
if ( oldArg === '' ) {
location.replace(href + (location.search === '' ? '?' : '&') + newArg);
return;
}
location.replace(href.replace(oldArg, newArg));
};
setTimeout(exposeUserInURL, 25);
// DOM modifications
var mutationHandlerTimer = null;
var mutationHandlerAsync = function() {
'use strict';
mutationHandlerTimer = null;
exposeUserInURL();
};
var mutationHandler = function(mutations) {
'use strict';
if ( mutationHandlerTimer !== null ) {
return;
}
for ( var i = 0; i < mutations.length; i++ ) {
if ( mutations[i].addedNodes ) {
mutationHandlerTimer = setTimeout(mutationHandlerAsync, 25);
break;
}
}
};
var observer = new MutationObserver(mutationHandler);
observer.observe(document.body, { childList: true, subtree: true });