easychart-8.x-3.5/src/Form/ResetOptionsConfirmForm.php

<?php

namespace Drupal\easychart\Form;

use Drupal\Core\File\FileSystemInterface;
use Drupal\Core\Form\ConfirmFormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\Core\Url;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Config reset options.
 */
class ResetOptionsConfirmForm extends ConfirmFormBase {
  /**
   * The file system service.
   *
   * @var \Drupal\Core\File\FileSystemInterface
   */
  protected $fileSystem;

  /**
   * Constructor.
   *
   * @param \Drupal\Core\File\FileSystemInterface $fileSystem
   *   File system service.
   */
  public function __construct(FileSystemInterface $fileSystem) {
    $this->fileSystem = $fileSystem;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static(
      $container->get('file_system')
    );
  }

  /**
   * {@inheritdoc}
   */
  public function getFormId(): string {
    return 'easychart_reset_options_confirm_form';
  }

  /**
   * {@inheritdoc}
   */
  public function getQuestion(): TranslatableMarkup {
    return $this->t('Are you sure you want to reset the options to their default values ?');
  }

  /**
   * {@inheritdoc}
   */
  public function getCancelUrl(): Url {
    return new Url('easychart.options');
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $this->fileSystem->delete('public://easychart-options.json');
    $this->messenger()->addMessage($this->t('The options have been reset to their default values.'));
    $form_state->setRedirectUrl($this->getCancelUrl());
  }

}