VocabularyAccessControlHandler.php

<?php

namespace Drupal\taxonomy;

use Drupal\Core\Access\AccessResult;
use Drupal\Core\Entity\EntityAccessControlHandler;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Session\AccountInterface;

/**
 * Defines the access control handler for the taxonomy vocabulary entity type.
 *
 * @see \Drupal\taxonomy\Entity\Vocabulary
 */
class VocabularyAccessControlHandler extends EntityAccessControlHandler {
    
    /**
     * {@inheritdoc}
     */
    protected $viewLabelOperation = TRUE;
    
    /**
     * {@inheritdoc}
     */
    protected function checkAccess(EntityInterface $entity, $operation, AccountInterface $account) {
        switch ($operation) {
            case 'view label':
                return AccessResult::allowedIfHasPermissions($account, [
                    'view vocabulary labels',
                    'access taxonomy overview',
                    'administer taxonomy',
                ], 'OR');
            case 'access taxonomy overview':
            case 'view':
                return AccessResult::allowedIfHasPermissions($account, [
                    'access taxonomy overview',
                    'administer taxonomy',
                ], 'OR');
            case 'reset all weights':
                return AccessResult::allowedIfHasPermissions($account, [
                    'administer taxonomy',
                    'edit terms in ' . $entity->id(),
                ], 'OR');
            default:
                return parent::checkAccess($entity, $operation, $account);
        }
    }

}