(function () {
  'use strict';

  /**
   * @copyright  (C) 2018 Open Source Matters, Inc. <https://www.joomla.org>
   * @license    GNU General Public License version 2 or later; see LICENSE.txt
   */
  (function () {
    var onChange = function onChange(value) {
      if (value === '-' || parseInt(value, 10) === 0) {
        document.getElementById('menuselect-group').classList.add('hidden');
      } else {
        document.getElementById('menuselect-group').classList.remove('hidden');
      }
    };

    var onBoot = function onBoot() {
      var element = document.getElementById('jform_assignment');

      if (element) {
        // Initialise the state
        onChange(element.value); // Check for changes in the state

        element.addEventListener('change', function (_ref) {
          var target = _ref.target;
          onChange(target.value);
        });
      }

      document.removeEventListener('DOMContentLoaded', onBoot);
    };

    document.addEventListener('DOMContentLoaded', onBoot);
  })();

})();