class FilterEnableForm

class FilterEnableForm extends EntityConfirmFormBase {
  
  /**
   * {@inheritdoc}
   */
  public function getQuestion() : TranslatableMarkup {
    return $this->t('Are you sure you want to enable the text format %format?', [
      '%format' => $this->entity
        ->label(),
    ]);
  }
  
  /**
   * {@inheritdoc}
   */
  public function getCancelUrl() : Url {
    return new Url('filter.admin_overview');
  }
  
  /**
   * {@inheritdoc}
   */
  public function getConfirmText() : TranslatableMarkup {
    return $this->t('Enable');
  }
  
  /**
   * {@inheritdoc}
   */
  public function getDescription() : TranslatableMarkup {
    return $this->t('This will make the %format format available.', [
      '%format' => $this->entity
        ->label(),
    ]);
  }
  
  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) : void {
    $this->entity
      ->enable()
      ->save();
    $this->messenger()
      ->addMessage($this->t('Enabled text format %format.', [
      '%format' => $this->entity
        ->label(),
    ]));
    $form_state->setRedirectUrl($this->getCancelUrl());
  }

}