Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\Core\Display;
Chris@0: 
Chris@0: use Drupal\Core\Cache\CacheBackendInterface;
Chris@0: use Drupal\Core\Extension\ModuleHandlerInterface;
Chris@0: use Drupal\Core\Plugin\DefaultPluginManager;
Chris@0: 
Chris@0: /**
Chris@0:  * Manages discovery of display variant plugins.
Chris@0:  *
Chris@0:  * @see \Drupal\Core\Display\Annotation\DisplayVariant
Chris@0:  * @see \Drupal\Core\Display\VariantInterface
Chris@0:  * @see \Drupal\Core\Display\VariantBase
Chris@0:  * @see plugin_api
Chris@0:  */
Chris@0: class VariantManager extends DefaultPluginManager {
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a new VariantManager.
Chris@0:    *
Chris@0:    * @param \Traversable $namespaces
Chris@0:    *   An object that implements \Traversable which contains the root paths
Chris@0:    *   keyed by the corresponding namespace to look for plugin implementations.
Chris@0:    * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
Chris@0:    *   Cache backend instance to use.
Chris@0:    * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
Chris@0:    *   The module handler to invoke the alter hook with.
Chris@0:    */
Chris@0:   public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler) {
Chris@0:     parent::__construct('Plugin/DisplayVariant', $namespaces, $module_handler, 'Drupal\Core\Display\VariantInterface', 'Drupal\Core\Display\Annotation\DisplayVariant');
Chris@0: 
Chris@0:     $this->setCacheBackend($cache_backend, 'variant_plugins');
Chris@0:     $this->alterInfo('display_variant_plugin');
Chris@0:   }
Chris@0: 
Chris@0: }