eca-1.0.x-dev/modules/form/src/Plugin/Action/FormStateSetRebuild.php

<?php

namespace Drupal\eca_form\Plugin\Action;

use Drupal\Core\Action\Attribute\Action;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\eca\Attribute\EcaAction;

/**
 * Flag the form state to rebuild the form again after submission.
 */
#[Action(
  id: 'eca_form_state_set_rebuild',
  label: new TranslatableMarkup('Form state: set rebuild'),
  type: 'form',
)]
#[EcaAction(
  description: new TranslatableMarkup('Flag the form state to rebuild the form again after submission.'),
  version_introduced: '1.1.0',
)]
class FormStateSetRebuild extends FormActionBase {

  /**
   * {@inheritdoc}
   */
  public function execute(): void {
    if (!($form_state = $this->getCurrentFormState())) {
      return;
    }
    $rebuild = (bool) $this->configuration['rebuild'];
    $form_state->setRebuild($rebuild);
  }

  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration(): array {
    return [
      'rebuild' => TRUE,
    ] + parent::defaultConfiguration();
  }

  /**
   * {@inheritdoc}
   */
  public function buildConfigurationForm(array $form, FormStateInterface $form_state): array {
    $form['rebuild'] = [
      '#type' => 'checkbox',
      '#title' => $this->t('Enable rebuild'),
      '#description' => $this->t('When enabled, the form state will be flagged to rebuild. If not, the form state will be flagged to not rebuild.'),
      '#default_value' => $this->configuration['rebuild'],
      '#weight' => -49,
    ];
    return parent::buildConfigurationForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function submitConfigurationForm(array &$form, FormStateInterface $form_state): void {
    $this->configuration['rebuild'] = !empty($form_state->getValue('rebuild'));
    parent::submitConfigurationForm($form, $form_state);
  }

}