Mastodon Filter Editor: Move Add Keywords Button

Modifies the keyword insertion behavior in Mastodon's filter edit page - moves the "Add Keyword" form above the list and changes insertion to prepend new keywords at the top

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.

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

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         Mastodon Filter Editor: Move Add Keywords Button
// @description  Modifies the keyword insertion behavior in Mastodon's filter edit page - moves the "Add Keyword" form above the list and changes insertion to prepend new keywords at the top
// @match        https://mastodon.social/filters/*/edit
// @version 0.0.1.20250521181415
// @namespace https://greasyfork.org/users/1435046
// ==/UserScript==

if (/^\/filters\/\d+\/edit$/.test(location.pathname)) {
  const anchor = document.querySelector('a.add_fields');
  if (anchor) {

    // Change insertion method to 'prepend'
    anchor.setAttribute('data-association-insertion-method', 'prepend');

    // Change insertion target to second tbody
    anchor.setAttribute('data-association-insertion-node', '.keywords-table tbody:nth-of-type(2)');

    const originalTfoot = anchor.closest('tfoot');
    if (originalTfoot) {
      // Grab the inner rows HTML
      const rowsHtml = originalTfoot.innerHTML;
      const table = originalTfoot.closest('table');
      const thead = table && table.querySelector('thead');
      if (table && thead) {
        // Remove the old tfoot
        originalTfoot.remove();
        // Create a new tbody, inject the rows
        const newTbody = document.createElement('tbody');
        newTbody.innerHTML = rowsHtml;
        // Insert right after the thead
        thead.insertAdjacentElement('afterend', newTbody);
      }
    }

    // Scope to the form
    const form = document.querySelector('form.edit_custom_filter');
    if (form) {
      const actionsDiv = form.querySelector('div.actions');
      const tableWrapper = form.querySelector('div.table-wrapper');
      if (actionsDiv && tableWrapper && tableWrapper.parentNode) {
        tableWrapper.parentNode.insertBefore(actionsDiv, tableWrapper);
      }
    }
  }
}