/**
* {@inheritdoc}
*/
public function submitForm(array &$form, FormStateInterface $form_state)
{
parent::submitForm($form, $form_state);
// Save the default language if changed.
$new_id = $form_state->getValue('site_default_language');
if ($new_id != $this->languageManager->getDefaultLanguage()->getId()) {
$this->configFactory->getEditable('system.site')->set('default_langcode', $new_id)->save();
$this->languageManager->reset();
}
if ($this->languageManager instanceof ConfigurableLanguageManagerInterface) {
$this->languageManager->updateLockedLanguageWeights();
}
drupal_set_message(t('Configuration saved.'));
// Force the redirection to the page with the language we have just
// selected as default.
$form_state->setRedirectUrl($this->entities[$new_id]->urlInfo('collection', array('language' => $this->entities[$new_id])));
}
