EntityBundleListener.php

<?php

namespace Drupal\Core\Entity;

use Drupal\Core\Extension\ModuleHandlerInterface;

/**
 * Reacts to entity bundle CRUD on behalf of the Entity system.
 */
class EntityBundleListener implements EntityBundleListenerInterface {
    
    /**
     * The entity type manager.
     *
     * @var \Drupal\Core\Entity\EntityTypeManagerInterface
     */
    protected $entityTypeManager;
    
    /**
     * The entity type bundle info.
     *
     * @var \Drupal\Core\Entity\EntityTypeBundleInfoInterface
     */
    protected $entityTypeBundleInfo;
    
    /**
     * The entity field manager.
     *
     * @var \Drupal\Core\Entity\EntityFieldManagerInterface
     */
    protected $entityFieldManager;
    
    /**
     * The module handler.
     *
     * @var \Drupal\Core\Extension\ModuleHandlerInterface
     */
    protected $moduleHandler;
    
    /**
     * Constructs a new EntityBundleListener.
     *
     * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
     *   The entity type manager.
     * @param \Drupal\Core\Entity\EntityTypeBundleInfoInterface $entity_type_bundle_info
     *   The entity type bundle info.
     * @param \Drupal\Core\Entity\EntityFieldManagerInterface $entity_field_manager
     *   The entity field manager.
     * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
     *   The module handler.
     */
    public function __construct(EntityTypeManagerInterface $entity_type_manager, EntityTypeBundleInfoInterface $entity_type_bundle_info, EntityFieldManagerInterface $entity_field_manager, ModuleHandlerInterface $module_handler) {
        $this->entityTypeManager = $entity_type_manager;
        $this->entityTypeBundleInfo = $entity_type_bundle_info;
        $this->entityFieldManager = $entity_field_manager;
        $this->moduleHandler = $module_handler;
    }
    
    /**
     * {@inheritdoc}
     */
    public function onBundleCreate($bundle, $entity_type_id) {
        $this->entityTypeBundleInfo
            ->clearCachedBundles();
        // Notify the entity storage.
        $storage = $this->entityTypeManager
            ->getStorage($entity_type_id);
        if ($storage instanceof EntityBundleListenerInterface) {
            $storage->onBundleCreate($bundle, $entity_type_id);
        }
        // Invoke hook_entity_bundle_create() hook.
        $this->moduleHandler
            ->invokeAll('entity_bundle_create', [
            $entity_type_id,
            $bundle,
        ]);
        $this->entityFieldManager
            ->clearCachedFieldDefinitions();
    }
    
    /**
     * {@inheritdoc}
     */
    public function onBundleDelete($bundle, $entity_type_id) {
        $this->entityTypeBundleInfo
            ->clearCachedBundles();
        // Notify the entity storage.
        $storage = $this->entityTypeManager
            ->getStorage($entity_type_id);
        if ($storage instanceof EntityBundleListenerInterface) {
            $storage->onBundleDelete($bundle, $entity_type_id);
        }
        // Invoke hook_entity_bundle_delete() hook.
        $this->moduleHandler
            ->invokeAll('entity_bundle_delete', [
            $entity_type_id,
            $bundle,
        ]);
        $this->entityFieldManager
            ->clearCachedFieldDefinitions();
    }

}