MenuTreeHierarchyConstraint.php

<?php

namespace Drupal\menu_link_content\Plugin\Validation\Constraint;

use Drupal\Core\Entity\Plugin\Validation\Constraint\CompositeConstraintBase;
use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\Core\Validation\Attribute\Constraint;
use Symfony\Component\Validator\Attribute\HasNamedArguments;

/**
 * Validation constraint for changing the menu hierarchy in pending revisions.
 */
class MenuTreeHierarchyConstraint extends CompositeConstraintBase {
  public function __construct(mixed $options = NULL, public $message = 'You can only change the hierarchy for the <em>published</em> version of this menu link.', ?array $groups = NULL, mixed $payload = NULL) {
    parent::__construct($options, $groups, $payload);
  }
  
  /**
   * {@inheritdoc}
   */
  public function coversFields() {
    return [
      'parent',
      'weight',
    ];
  }

}