ptalk-8.x-0.x-dev/src/MessageViewBuilder.php

<?php

namespace Drupal\ptalk;

use Drupal\Core\Entity\Display\EntityViewDisplayInterface;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Entity\EntityManagerInterface;
use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Entity\EntityViewBuilder;
use Drupal\Core\Language\LanguageManagerInterface;
use Drupal\Core\Session\AccountInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * View builder handler for messages.
 */
class MessageViewBuilder extends EntityViewBuilder {

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

  /**
   * Constructs a new MessageViewBuilder.
   *
   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
   *   The entity type definition.
   * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
   *   The entity manager service.
   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
   *   The language manager.
   * @param \Drupal\Core\Session\AccountInterface $current_user
   *   The current user.
   */
  public function __construct(EntityTypeInterface $entity_type, EntityManagerInterface $entity_manager, LanguageManagerInterface $language_manager, AccountInterface $current_user) {
    parent::__construct($entity_type, $entity_manager, $language_manager);
    $this->currentUser = $current_user;
  }

  /**
   * {@inheritdoc}
   */
  public static function createInstance(ContainerInterface $container, EntityTypeInterface $entity_type) {
    return new static(
      $entity_type,
      $container->get('entity.manager'),
      $container->get('language_manager'),
      $container->get('current_user')
    );
  }

  /**
   * {@inheritdoc}
   */
  public function view(EntityInterface $entity, $view_mode = 'full', $langcode = NULL) {
    $build = parent::view($entity, $view_mode, $langcode);
    return $build;
  }

  /**
   * {@inheritdoc}
   */
  protected function getBuildDefaults(EntityInterface $entity, $view_mode) {
    $build = parent::getBuildDefaults($entity, $view_mode);
    return $build;
  }

  /**
   * {@inheritdoc}
   */
  public function buildComponents(array &$build, array $entities, array $displays, $view_mode) {
    parent::buildComponents($build, $entities, $displays, $view_mode);
    /** @var \Drupal\ptalk\MessageInterface[] $entities */
    if (empty($entities)) {
      return;
    }

    parent::buildComponents($build, $entities, $displays, $view_mode);

    foreach ($entities as $id => $entity) {
      $build[$id]['links'] = [
        '#lazy_builder' => [
          'message.lazy_builders:renderLinks',
          [
            $entity->id(),
            $view_mode,
            !empty($entity->in_preview),
          ],
        ],
        '#create_placeholder' => TRUE,
      ];
    }

  }

  /**
   * {@inheritdoc}
   */
  protected function alterBuild(array &$build, EntityInterface $ptalk_message, EntityViewDisplayInterface $display, $view_mode) {
    parent::alterBuild($build, $ptalk_message, $display, $view_mode);
  }

}