Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\Core\ParamConverter;
Chris@0: 
Chris@0: use Drupal\Core\Menu\MenuLinkManagerInterface;
Chris@0: use Drupal\Component\Plugin\Exception\PluginException;
Chris@0: use Symfony\Component\Routing\Route;
Chris@0: 
Chris@0: /**
Chris@0:  * Parameter converter for upcasting entity ids to full objects.
Chris@0:  */
Chris@0: class MenuLinkPluginConverter implements ParamConverterInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * Plugin manager which creates the instance from the value.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Menu\MenuLinkManagerInterface
Chris@0:    */
Chris@0:   protected $menuLinkManager;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a new MenuLinkPluginConverter.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Menu\MenuLinkManagerInterface $menu_link_manager
Chris@0:    *   The menu link plugin manager.
Chris@0:    */
Chris@0:   public function __construct(MenuLinkManagerInterface $menu_link_manager) {
Chris@0:     $this->menuLinkManager = $menu_link_manager;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function convert($value, $definition, $name, array $defaults) {
Chris@0:     if ($value) {
Chris@0:       try {
Chris@0:         return $this->menuLinkManager->createInstance($value);
Chris@0:       }
Chris@0:       catch (PluginException $e) {
Chris@0:         // Suppress the error.
Chris@0:       }
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function applies($definition, $name, Route $route) {
Chris@0:     return (!empty($definition['type']) && $definition['type'] === 'menu_link_plugin');
Chris@0:   }
Chris@0: 
Chris@0: }