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   1  /**
   2   * @copyright  (C) 2018 Open Source Matters, Inc. <https://www.joomla.org>
   3   * @license    GNU General Public License version 2 or later; see LICENSE.txt
   4   */
   5  (document => {
   6    const batchMenu = document.getElementById('batch-menu-id');
   7    const batchCopyMove = document.getElementById('batch-copy-move');
   8    let batchSelector;
   9  
  10    const onChange = () => {
  11      if (batchSelector.value !== 0 || batchSelector.value !== '') {
  12        batchCopyMove.classList.remove('hidden');
  13      } else {
  14        batchCopyMove.classList.add('hidden');
  15      }
  16    };
  17  
  18    if (batchMenu) {
  19      batchSelector = batchMenu;
  20    }
  21  
  22    if (batchCopyMove) {
  23      batchSelector.addEventListener('change', onChange);
  24    }
  25  })(document);