TRUE, '#tree' => TRUE, '#process' => array( array($class, 'processLanguageConfiguration'), ), ); } /** * Process handler for the language_configuration form element. */ public static function processLanguageConfiguration(&$element, FormStateInterface $form_state, &$form) { $options = isset($element['#options']) ? $element['#options'] : array(); // Avoid validation failure since we are moving the '#options' key in the // nested 'language' select element. unset($element['#options']); $element['langcode'] = array( '#type' => 'select', '#title' => t('Default language'), '#options' => $options + static::getDefaultOptions(), '#description' => t('Explanation of the language options is found on the languages list page.', array('@languages_list_page' => \Drupal::url('language.admin_overview'))), '#default_value' => isset($element['#default_value']['langcode']) ? $element['#default_value']['langcode'] : NULL, ); $element['language_show'] = array( '#type' => 'checkbox', '#title' => t('Show language selector on create and edit pages'), '#default_value' => isset($element['#default_value']['language_show']) ? $element['#default_value']['language_show'] : NULL, ); // Add the entity type and bundle information to the form if they are set. // They will be used, in the submit handler, to generate the names of the // variables that will store the settings and are a way to uniquely identify // the entity. $language = $form_state->get('language') ?: []; $language += array( $element['#name'] => array( 'entity_type' => $element['#entity_information']['entity_type'], 'bundle' => $element['#entity_information']['bundle'], ), ); $form_state->set('language', $language); // Do not add the submit callback for the language content settings page, // which is handled separately. if ($form['#form_id'] != 'language_content_settings_form') { // Determine where to attach the language_configuration element submit // handler. // @todo Form API: Allow form widgets/sections to declare #submit // handlers. if (isset($form['actions']['submit']['#submit']) && array_search('language_configuration_element_submit', $form['actions']['submit']['#submit']) === FALSE) { $form['actions']['submit']['#submit'][] = 'language_configuration_element_submit'; } elseif (array_search('language_configuration_element_submit', $form['#submit']) === FALSE) { $form['#submit'][] = 'language_configuration_element_submit'; } } return $element; } /** * Returns the default options for the language configuration form element. * * @return array * An array containing the default options. */ protected static function getDefaultOptions() { $language_options = array( LanguageInterface::LANGCODE_SITE_DEFAULT => t("Site's default language (!language)", array('!language' => static::languageManager()->getDefaultLanguage()->getName())), 'current_interface' => t('Current interface language'), 'authors_default' => t("Author's preferred language"), ); $languages = static::languageManager()->getLanguages(LanguageInterface::STATE_ALL); foreach ($languages as $langcode => $language) { $language_options[$langcode] = $language->isLocked() ? t('- @name -', array('@name' => $language->getName())) : $language->getName(); } return $language_options; } /** * Wraps the language manager. * * @return \Drupal\Core\Language\LanguageManagerInterface */ protected static function languageManager() { return \Drupal::languageManager(); } }