htools-8.x-1.x-dev/src/EventSubscriber/BlockComponentRenderArray.php

<?php

namespace Drupal\htools\EventSubscriber;

use Drupal\Core\Session\AccountInterface;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Drupal\layout_builder\Event\SectionComponentBuildRenderArrayEvent;
use Drupal\layout_builder\LayoutBuilderEvents;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;

/**
 * Builds render arrays and handles access for all block components.
 *
 * @internal
 *   Tagged services are internal.
 */
class BlockComponentRenderArray implements EventSubscriberInterface {

  use StringTranslationTrait;

  /**
   * The current user.
   *
   * @var \Drupal\Core\Session\AccountInterface
   */
  protected $currentUser;

  /**
   * Creates a BlockComponentRenderArray object.
   *
   * @param \Drupal\Core\Session\AccountInterface $current_user
   *   The current user.
   */
  public function __construct(AccountInterface $current_user) {
    $this->currentUser = $current_user;
  }

  /**
   * {@inheritdoc}
   */
  public static function getSubscribedEvents() {
    $events[LayoutBuilderEvents::SECTION_COMPONENT_BUILD_RENDER_ARRAY] = [
      'onBuildRender',
      0,
    ];
    return $events;
  }

  /**
   * Builds render arrays for block plugins and sets it on the event.
   *
   * @param \Drupal\layout_builder\Event\SectionComponentBuildRenderArrayEvent $event
   *   The section component render event.
   */
  public function onBuildRender(SectionComponentBuildRenderArrayEvent $event) {
    $build = $event->getBuild();
    if (!empty($build)) {
      $build['#in_preview'] = $event->inPreview();
      $event->setBuild($build);
    }
  }

}