6 (function ($, Drupal) {
8 * Select the language code of an imported file based on its filename.
10 * This only works if the file name ends with "LANGCODE.po".
12 * @type {Drupal~behavior}
14 * @prop {Drupal~behaviorAttach} attach
15 * Attaches behavior for preselecting language code based on filename.
17 Drupal.behaviors.importLanguageCodeSelector = {
18 attach(context, settings) {
19 const $form = $('#locale-translate-import-form').once('autodetect-lang');
21 const $langcode = $form.find('.langcode-input');
22 $form.find('.file-import-input')
23 .on('change', function () {
24 // If the filename is fully the language code or the filename
25 // ends with a language code, pre-select that one.
26 const matches = $(this).val().match(/([^.][\.]*)([\w-]+)\.po$/);
27 if (matches && $langcode.find(`option[value="${matches[2]}"]`).length) {
28 $langcode.val(matches[2]);