YouTube - Proper Description

Watch page description below the video with proper open/close toggle, instead of a side bar.

Stan na 02-06-2022. Zobacz najnowsza wersja.

Aby zainstalować ten skrypt, wymagana jest instalacje jednego z następujących rozszerzeń: Tampermonkey, Greasemonkey lub Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

Aby zainstalować ten skrypt, wymagana jest instalacje jednego z następujących rozszerzeń: Tampermonkey, Violentmonkey.

Aby zainstalować ten skrypt, wymagana będzie instalacja rozszerzenia Tampermonkey lub Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

Aby zainstalować ten skrypt, musisz zainstalować rozszerzenie menedżera skryptów użytkownika.

(Mam już menedżera skryptów użytkownika, pozwól mi to zainstalować!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

Będziesz musiał zainstalować rozszerzenie menedżera stylów użytkownika, aby zainstalować ten styl.

Będziesz musiał zainstalować rozszerzenie menedżera stylów użytkownika, aby zainstalować ten styl.

Musisz zainstalować rozszerzenie menedżera stylów użytkownika, aby zainstalować ten styl.

(Mam już menedżera stylów użytkownika, pozwól mi to zainstalować!)

// ==UserScript==
// @name         YouTube - Proper Description
// @namespace    q1k
// @version      1.3.3
// @description  Watch page description below the video with proper open/close toggle, instead of a side bar.
// @author       q1k
// @match        *://www.youtube.com/*
// @grant        none
// @run-at       document-end
// ==/UserScript==

function findElement(selector) {
    return new Promise(function(resolve) {
        if (document.querySelector(selector)) {
            return resolve(document.querySelector(selector));
        }
        const observer = new MutationObserver(function(mutations) {
            if (document.querySelector(selector)) {
                resolve(document.querySelector(selector));
                observer.disconnect();
            }
        });
        observer.observe(document, {
            childList: true,
            subtree: true
        });
    });
}
function watchExistingButtonForChange(oldbutton, newbutton, newbuttontext) {
    if(newbutton.innerText.trim().length>0) {
        return;
    }
    var mo = new MutationObserver(function(mutations) {
        if(oldbutton.innerText.trim().length>0) {
            newbuttontext.innerText = oldbutton.innerText.replace("...","").trim();
            mo.disconnect();
        }
    });
    mo.observe(oldbutton, {
        childList: true,
        subtree: true,
        characterData: true
    });
}
var more, less, description;
function addButton(open, idname, button_current) {
    let button_new = document.createElement("div");
    //button.setAttribute("id", idname);
    button_new.setAttribute("class","desc_toggles "+idname);
    button_new.innerHTML = "<div class='desc_text more-button style-scope ytd-video-secondary-info-renderer'></div>";
    let button_new_text = button_new.querySelector(".desc_text");
    button_current.parentNode.appendChild(button_new);
    description = button_current.closest("ytd-expander");
    return [button_new, button_new_text];
}

var styles = document.createElement("style");
styles.innerHTML=`
ytd-watch-metadata { display: none !important; }
#meta-contents[hidden], #info-contents[hidden]{ display: block !important; }
#meta tp-yt-paper-button#more, #meta tp-yt-paper-button#less, #meta ytd-expander[collapsed] .description_close, #meta ytd-expander:not([collapsed]) .description_open, #meta ytd-expander tp-yt-paper-button.ytd-expander[hidden] ~ tp-yt-paper-button.ytd-expander[hidden] ~ div.desc_toggles { display: none !important; }
#meta .desc_toggles { display: inline-block; cursor: pointer; }
ytd-video-primary-info-renderer[use-yt-sans20-light] .title.ytd-video-primary-info-renderer { line-height: 2.6rem !important; font-weight: 400 !important; font-size: 1.8rem !important; font-family: "Roboto",sans-serif !important; }
`;
/*
var styles_alt = document.createElement("style");
    styles_alt.innerHTML=`
#meta ytd-video-secondary-info-renderer, #primary #meta .desc_toggles { border-color: rgba(0,0,0,0.125); padding-bottom: 0; border-bottom: none; }
[dark] #meta ytd-video-secondary-info-renderer, [dark] #primary #meta .desc_toggles { border-color: rgba(255,255,255,0.125); }

#meta ytd-expander.ytd-video-secondary-info-renderer, #meta ytd-expander.ytd-video-secondary-info-renderer > * { margin-left: 0; }
#meta .desc_toggles { width: 100%; border-top: 1px solid; border-radius: 0; text-align: center; cursor: pointer; margin-top: 1em; background: linear-gradient(rgba(0,0,0,0.02), transparent); }
[dark] #meta .desc_toggles { background: linear-gradient(rgba(255,255,255,0.02), transparent); }
#meta .desc_toggles:hover { background: rgba(0,0,0,0.03); }
[dark] #meta .desc_toggles:hover { background: rgba(255,255,255,0.03); }
#meta .desc_toggles .desc_text { margin: 0; padding: 4px; }
`;*/
document.head.appendChild(styles);

findElement("#meta ytd-video-secondary-info-renderer ytd-expander tp-yt-paper-button#more").then(function(el){
    more = el;
    let buttons = addButton(true, "description_open", el);
    buttons[0].addEventListener('click', function(e) {
        description.removeAttribute("collapsed");
        more.setAttribute("hidden","");
        less.removeAttribute("hidden");
    });
    yt.msgs_.SHOW_MORE ? buttons[1].innerText=yt.msgs_.SHOW_MORE : buttons[1].innerText = more.innerText.replace("...","").trim();
    watchExistingButtonForChange(el, buttons[0], buttons[1]);
});
findElement("#meta ytd-video-secondary-info-renderer ytd-expander tp-yt-paper-button#less").then(function(el){
    less = el;
    let buttons = addButton(false, "description_close", el);
    buttons[0].addEventListener('click', function(e) {
        description.setAttribute("collapsed","");
        less.setAttribute("hidden","");
        more.removeAttribute("hidden");
    });
    yt.msgs_.SHOW_LESS ? buttons[1].innerText=yt.msgs_.SHOW_LESS : buttons[1].innerText = less.innerText.replace("...","").trim();
    watchExistingButtonForChange(el, buttons[0], buttons[1]);
});
findElement("#info ytd-video-primary-info-renderer").then(function(el){
    el.removeAttribute("use-yt-sans20-light");
});