Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\workflows;
Chris@0: 
Chris@0: use Drupal\Core\Access\AccessResult;
Chris@0: use Drupal\Core\Entity\EntityInterface;
Chris@0: use Drupal\Core\Routing\Access\AccessInterface;
Chris@0: use Drupal\Core\Routing\RouteMatchInterface;
Chris@0: use Drupal\Core\Session\AccountInterface;
Chris@0: use Symfony\Component\Routing\Route;
Chris@0: 
Chris@0: /**
Chris@0:  * Provides a access checker for deleting a workflow state.
Chris@0:  *
Chris@0:  * @internal
Chris@0:  *   Marked as internal until it's validated this should form part of the public
Chris@0:  *   API in https://www.drupal.org/node/2897148.
Chris@0:  */
Chris@0: class WorkflowDeleteAccessCheck implements AccessInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * Checks access to deleting a workflow state for a particular route.
Chris@0:    *
Chris@0:    * The value of '_workflow_state_delete_access' is ignored. The route must
Chris@0:    * have the parameters 'workflow' and 'workflow_state'. For example:
Chris@0:    * @code
Chris@0:    * pattern: '/foo/{workflow}/bar/{workflow_state}/delete'
Chris@0:    * requirements:
Chris@0:    *   _workflow_state_delete_access: 'true'
Chris@0:    * @endcode
Chris@0:    * @see \Drupal\Core\ParamConverter\EntityConverter
Chris@0:    *
Chris@0:    * @param \Symfony\Component\Routing\Route $route
Chris@0:    *   The route to check against.
Chris@0:    * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
Chris@0:    *   The parametrized route
Chris@0:    * @param \Drupal\Core\Session\AccountInterface $account
Chris@0:    *   The currently logged in account.
Chris@0:    *
Chris@0:    * @return \Drupal\Core\Access\AccessResultInterface
Chris@0:    *   The access result.
Chris@0:    */
Chris@0:   public function access(Route $route, RouteMatchInterface $route_match, AccountInterface $account) {
Chris@0:     // If there is valid entity of the given entity type, check its access.
Chris@0:     $parameters = $route_match->getParameters();
Chris@0:     if ($parameters->has('workflow') && $parameters->has('workflow_state')) {
Chris@0:       $entity = $parameters->get('workflow');
Chris@0:       if ($entity instanceof EntityInterface) {
Chris@0:         return $entity->access('delete-state:' . $parameters->get('workflow_state'), $account, TRUE);
Chris@0:       }
Chris@0:     }
Chris@0:     // No opinion, so other access checks should decide if access should be
Chris@0:     // allowed or not.
Chris@0:     return AccessResult::neutral();
Chris@0:   }
Chris@0: 
Chris@0: }