public function ThemeExperimentalConfirmForm::submitForm in Drupal 9

Same name and namespace in other branches

1. 8 core/modules/system/src/Form/ThemeExperimentalConfirmForm.php \Drupal\system\Form\ThemeExperimentalConfirmForm::submitForm()
2. 10 core/modules/system/src/Form/ThemeExperimentalConfirmForm.php \Drupal\system\Form\ThemeExperimentalConfirmForm::submitForm()

Form submission handler.

Parameters

array $form: An associative array containing the structure of the form.

\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form.

Overrides FormInterface::submitForm

File

core/modules/system/src/Form/ThemeExperimentalConfirmForm.php, line 135

Class

ThemeExperimentalConfirmForm

Builds a confirmation form for enabling experimental themes.

Namespace

Drupal\system\Form

Code

public function submitForm(array &$form, FormStateInterface $form_state) {
  $args = $form_state
    ->getBuildInfo()['args'];
  $theme = isset($args[0]) ? $args[0] : NULL;
  $set_default = isset($args[1]) ? $args[1] : FALSE;
  $themes = $this->themeList
    ->getList();
  $config = $this
    ->configFactory()
    ->getEditable('system.theme');
  try {
    if ($this->themeInstaller
      ->install([
      $theme,
    ])) {
      if ($set_default) {

        // Set the default theme.
        $config
          ->set('default', $theme)
          ->save();

        // The status message depends on whether an admin theme is currently
        // in use: an empty string means the admin theme is set to be the
        // default theme.
        $admin_theme = $config
          ->get('admin');
        if (!empty($admin_theme) && $admin_theme !== $theme) {
          $this
            ->messenger()
            ->addStatus($this
            ->t('Please note that the administration theme is still set to the %admin_theme theme; consequently, the theme on this page remains unchanged. All non-administrative sections of the site, however, will show the selected %selected_theme theme by default.', [
            '%admin_theme' => $themes[$admin_theme]->info['name'],
            '%selected_theme' => $themes[$theme]->info['name'],
          ]));
        }
        else {
          $this
            ->messenger()
            ->addStatus($this
            ->t('%theme is now the default theme.', [
            '%theme' => $themes[$theme]->info['name'],
          ]));
        }
      }
      else {
        $this
          ->messenger()
          ->addStatus($this
          ->t('The %theme theme has been installed.', [
          '%theme' => $themes[$theme]->info['name'],
        ]));
      }
    }
    else {
      $this
        ->messenger()
        ->addError($this
        ->t('The %theme theme was not found.', [
        '%theme' => $theme,
      ]));
    }
  } catch (PreExistingConfigException $e) {
    $config_objects = $e
      ->flattenConfigObjects($e
      ->getConfigObjects());
    $this
      ->messenger()
      ->addError($this
      ->formatPlural(count($config_objects), 'Unable to install @extension, %config_names already exists in active configuration.', 'Unable to install @extension, %config_names already exist in active configuration.', [
      '%config_names' => implode(', ', $config_objects),
      '@extension' => $theme,
    ]));
  } catch (UnmetDependenciesException $e) {
    $this
      ->messenger()
      ->addError($e
      ->getTranslatedMessage($this
      ->getStringTranslation(), $theme));
  }
  $form_state
    ->setRedirectUrl($this
    ->getCancelUrl());
}