// ==UserScript==
// @name          YT video tab by default
// @description   Open "Video" tab of youtube channel by default
// @author        MK
// @namespace     max44
// @homepage      https://greasyfork.org/en/users/309172-max44
// @match         *://*.youtube.com/*
// @match         *://*.youtu.be/*
// @icon          https://cdn.icon-icons.com/icons2/1488/PNG/512/5295-youtube-i_102568.png
// @version       1.1.11
// @license       MIT
// @require       https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js
// @run-at        document-idle
// ==/UserScript==
(function() {
'use strict';
var urlAtLastCheck = "";
var divTabs = null;
var divPreview = null;
var divPostPreview = null;
var waitHeader;
var waitPreview;
//Check URL changes
const rootCallback = function (mutationsList, observer) {
if (urlAtLastCheck != document.location.href) {
//console.log("new href: " + document.location.href);
urlAtLastCheck = document.location.href;
clearInterval(waitHeader); //Stop waiting for tabs
clearInterval(waitPreview); //Stop waiting for preview
openVideoTab();
}
}
const rootNode = document.querySelector("body");
if (rootNode != null) {
const rootObserver = new MutationObserver(rootCallback);
rootObserver.observe(rootNode, {childList: true, subtree: true});
}
function openVideoTab() {
var pathArray = window.location.pathname.split('/');
var firstPath = pathArray[1];
var lastPath = pathArray[pathArray.length - 1];
//console.log("firstPath: " + firstPath + "   lastPath: " + lastPath);
if (firstPath === "" || firstPath === "watch" || firstPath === "playlist" || firstPath === "r###lts" || firstPath === "feed" || firstPath === "gaming" || firstPath === "live" || lastPath === "search" || lastPath === "history" || lastPath === "featured" || lastPath === "videos" || lastPath === "shorts" || lastPath === "streams" || lastPath === "playlists" || lastPath === "community" || lastPath === "channels" || lastPath === "about") { //If not a channel or any channel's tab was selected
//console.log("Not a channel or any tab is selected");
} else { //If a channel with default tab
waitPreview = setInterval(function() { //Wait untile preview video loaded
divPreview = $( "ytd-channel-video-player-renderer video" ); //Get first section, where preview video can be located
divPostPreview = $( "div#primary > ytd-section-list-renderer > div#contents > ytd-item-section-renderer:nth-child(1)" ); //Get first section after preview video
//if (divPreview != null && divPreview.length > 0 && divPostPreview != null && divPostPreview.length > 0) {
if (divPreview != null && divPreview.length > 0) {
//console.log("preview is paused");
document.querySelectorAll("ytd-channel-video-player-renderer video").forEach(videoPause); //Pause any channel preview video
}
//console.log("preview interval");
}, 100);
document.addEventListener("yt-navigate-finish", videoPause);
waitHeader = setInterval(function() { //Wait untile header loaded
divTabs = $( "div#tabsContainer > div#tabsContent yt-tab-shape" ); //Get array of tabs as HTML elements
if (divTabs == null || divTabs.length < 2) {
divTabs = $( "div#tabsContainer > div#tabsContent tp-yt-paper-tab" ); //Get array of tabs as HTML elements
}
if (divPostPreview != null && divPostPreview.length > 0 && divTabs != null && divTabs.length >= 2) {
//Count visible tabs
var countVisible = 0;
var i;
var tabIndex = -1;
for (i = 0; i < divTabs.length; i++) {
if (isVisible(divTabs[i])) countVisible++;
if (countVisible == 2) {
//document.querySelectorAll("ytd-channel-video-player-renderer video").forEach(videoPause); //Pause any channel preview video
tabIndex = i; //Video tab is 2nd visible
}
}
if (countVisible >= 2) { //Enough number of visible tabs - normal channel
divTabs[tabIndex].click();
//console.log("Video tab (" + tabIndex + ") is activated. Visible tabs: " + countVisible);
}
clearInterval(waitHeader); //Stop waiting for tabs
clearInterval(waitPreview); //Stop waiting for preview
}
//console.log("header interval");
}, 100);
}
}
const videoPause = () => { //Pause media
let paused = false;
input.addEventListener("play", () => {
if (paused === false) {
paused = true;
input.pause();
}
});
}
function isVisible(pObj) { //Check all the parents of element to find whether it is visible or not
if (pObj != null) {
var checkNext = true;
var vObj = pObj;
while (checkNext) {
checkNext = false;
//console.log("checking element " + vObj.tagName + "#" + vObj.id + ": '" + document.defaultView.getComputedStyle(vObj,null)['display'] + "'");
if (document.defaultView.getComputedStyle(vObj,null)['display'] != "none") {
if (vObj.parentElement != null) {
vObj = vObj.parentElement;
checkNext = true;
}
} else {
return false;
}
}
return true;
}
return false;
}
})();