LayoutParagraphsUpdateLayoutSubscriber.php in Layout Paragraphs 2.0.x

Namespace

Drupal\layout_paragraphs\EventSubscriber

File

src/EventSubscriber/LayoutParagraphsUpdateLayoutSubscriber.php

<?php

namespace Drupal\layout_paragraphs\EventSubscriber;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Drupal\layout_paragraphs\Event\LayoutParagraphsUpdateLayoutEvent;

/**
 * Event subscriber.
 */
class LayoutParagraphsUpdateLayoutSubscriber implements EventSubscriberInterface {

  /**
   * {@inheritDoc}
   */
  public static function getSubscribedEvents() {
    return [
      LayoutParagraphsUpdateLayoutEvent::EVENT_NAME => 'compareLayouts',
    ];
  }

  /**
   * Restricts available types based on settings in layout.
   *
   * @param \Drupal\layout_paragraphs\Event\LayoutParagraphsUpdateLayoutEvent $event
   *   The allowed types event.
   */
  public function compareLayouts(LayoutParagraphsUpdateLayoutEvent $event) {
    $original = $event
      ->getOriginalLayout()
      ->getParagraphsReferenceField();
    $layout = $event
      ->getUpdatedLayout()
      ->getParagraphsReferenceField();
    $event->needsRefresh = $original
      ->isEmpty() != $layout
      ->isEmpty();
  }

}

Classes

Name	Description
LayoutParagraphsUpdateLayoutSubscriber	Event subscriber.