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- <?php
- namespace Drupal\Core\Field;
- /**
- * Helper methods for FieldStorageDefinitionListenerInterface.
- *
- * This allows a class implementing FieldStorageDefinitionListenerInterface to
- * subscribe and react to field storage definition events.
- *
- * @see \Symfony\Component\EventDispatcher\EventSubscriberInterface
- * @see \Drupal\Core\Field\FieldStorageDefinitionListenerInterface
- */
- trait FieldStorageDefinitionEventSubscriberTrait {
- /**
- * Returns the subscribed events.
- *
- * @return array
- * An array of subscribed event names.
- *
- * @see \Symfony\Component\EventDispatcher\EventSubscriberInterface::getSubscribedEvents()
- */
- public static function getFieldStorageDefinitionEvents() {
- $event = ['onFieldStorageDefinitionEvent', 100];
- $events[FieldStorageDefinitionEvents::CREATE][] = $event;
- $events[FieldStorageDefinitionEvents::UPDATE][] = $event;
- $events[FieldStorageDefinitionEvents::DELETE][] = $event;
- return $events;
- }
- /**
- * Listener method for any field storage definition event.
- *
- * @param \Drupal\Core\Field\FieldStorageDefinitionEvent $event
- * The field storage definition event object.
- * @param string $event_name
- * The event name.
- */
- public function onFieldStorageDefinitionEvent(FieldStorageDefinitionEvent $event, $event_name) {
- switch ($event_name) {
- case FieldStorageDefinitionEvents::CREATE:
- $this->onFieldStorageDefinitionCreate($event->getFieldStorageDefinition());
- break;
- case FieldStorageDefinitionEvents::UPDATE:
- $this->onFieldStorageDefinitionUpdate($event->getFieldStorageDefinition(), $event->getOriginal());
- break;
- case FieldStorageDefinitionEvents::DELETE:
- $this->onFieldStorageDefinitionDelete($event->getFieldStorageDefinition());
- break;
- }
- }
- /**
- * {@inheritdoc}
- */
- public function onFieldStorageDefinitionCreate(FieldStorageDefinitionInterface $storage_definition) {
- }
- /**
- * {@inheritdoc}
- */
- public function onFieldStorageDefinitionUpdate(FieldStorageDefinitionInterface $storage_definition, FieldStorageDefinitionInterface $original) {
- }
- /**
- * {@inheritdoc}
- */
- public function onFieldStorageDefinitionDelete(FieldStorageDefinitionInterface $storage_definition) {
- }
- }
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