Notion Fixed TOC

Make Notion TOC Fixed.

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

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

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

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

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

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.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         Notion Fixed TOC
// @name:zh-CN   Notion 浮动 TOC
// @namespace    https://notion.cx/
// @version      0.2.0
// @description  Make Notion TOC Fixed.
// @description:zh-cn 让 Notion 的 TOC 浮动显示。
// @author       Ruter Lü
// @match        https://www.notion.so/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    /* Helper function to wait for the element ready */
    const waitFor = (...selectors) => new Promise(resolve => {
        const delay = 500;
        const f = () => {
            const elements = selectors.map(selector => document.querySelector(selector));
            if (elements.every(element => element != null)) {
                resolve(elements);
            } else {
                setTimeout(f, delay);
            }
        }
        f();
    });
    /* Helper function to wait for the element ready */

    let callback = function(mutations) {
        waitFor('.notion-table_of_contents-block').then(([el]) => {
            const toc = document.querySelector('.notion-table_of_contents-block');
            if (toc) {
                const toc_p = toc.parentElement;
                if (!toc_p.classList.contains('notion-column-block')) {
                    return;
                }
                toc_p.style.position = 'sticky';
                toc_p.style.top = '0';
                toc_p.style.overflowY = 'scroll';
                toc_p.style.maxHeight = '50vh';
            }
        });
    };
    const observer = new MutationObserver(callback);
    let notionApp = document.getElementById('notion-app');
    const config = { childList: true, subtree: true };
    observer.observe(notionApp, config);
})();