Greasy Fork editor adjuster

Automatically adjusts the height of editor.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

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

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

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

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

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

(У мене вже є менеджер скриптів, дайте мені встановити його!)

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.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Greasy Fork editor adjuster
// @namespace    https://greasyfork.org/ja/users/570127
// @version      2025.12.14.5
// @description  Automatically adjusts the height of editor.
// @description:ja ソースエディタのテキストエリアの高さを行数に応じて高くします。
// @author       universato
// @match        https://greasyfork.org/*
// @license      MIT
// @grant        none
// ==/UserScript==

(function () {
    'use strict';

    const textarea = document.querySelector('#script_version_code');
    if (!textarea) return;

    // Adjust the height of editor.
    const numberOfLines = textarea.value.split('\n').length;
    textarea.style.height = (18 * Math.min(44, Math.max(12, numberOfLines))) + "px";

    const submit = document.querySelector('input[type="submit"][name="commit"]');
    if (!submit) return;

    return;

    submit.addEventListener('click', function (event) {
        const hasTrailingSpace = /[ \t]+$/m.test(textarea.value);
        if (!hasTrailingSpace) return;

        const proceed = confirm(
            '[UserScript] Greasy Fork editor adjuster:\n\n' +
            'Trailing whitespace were found.\n\n' +
            'Do you want to continue and submit anyway?'
        );

        if (!proceed) {
            event.preventDefault();
            event.stopPropagation();
        }
        // proceed === true の場合は何もせず送信続行
    }, true); // capture
})();