arch-8.x-1.x-dev/modules/product/src/ProxyClass/ParamConverter/ProductPreviewConverter.php

<?php

namespace Drupal\arch_product\ProxyClass\ParamConverter;

use Drupal\Core\DependencyInjection\DependencySerializationTrait;
use Drupal\Core\ParamConverter\ParamConverterInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\Routing\Route;

/**
 * Product preview converter.
 *
 * Provides a proxy class for
 * \Drupal\arch_product\ParamConverter\ProductPreviewConverter.
 *
 * @package Drupal\arch_product\ProxyClass\ParamConverter
 */
class ProductPreviewConverter implements ParamConverterInterface {

  use DependencySerializationTrait;

  /**
   * The id of the original proxied service.
   *
   * @var string
   */
  protected $drupalProxyOriginalServiceId;

  /**
   * The real proxied service, after it was lazy loaded.
   *
   * @var \Drupal\arch_product\ParamConverter\ProductPreviewConverter
   */
  protected $service;

  /**
   * The service container.
   *
   * @var \Symfony\Component\DependencyInjection\ContainerInterface
   */
  protected $container;

  /**
   * Constructs a ProxyClass Drupal proxy object.
   *
   * @param \Symfony\Component\DependencyInjection\ContainerInterface $container
   *   The container.
   * @param string $drupal_proxy_original_service_id
   *   The service ID of the original service.
   */
  public function __construct(
    ContainerInterface $container,
    $drupal_proxy_original_service_id,
  ) {
    $this->container = $container;
    $this->drupalProxyOriginalServiceId = $drupal_proxy_original_service_id;
  }

  /**
   * Lazy loads the real service from the container.
   *
   * @return object
   *   Returns the constructed real service.
   */
  protected function lazyLoadItself() {
    if (!isset($this->service)) {
      $this->service = $this->container->get($this->drupalProxyOriginalServiceId);
    }

    return $this->service;
  }

  /**
   * {@inheritdoc}
   */
  public function convert($value, $definition, $name, array $defaults) {
    return $this->lazyLoadItself()
      ->convert($value, $definition, $name, $defaults);
  }

  /**
   * {@inheritdoc}
   */
  public function applies($definition, $name, Route $route) {
    return $this->lazyLoadItself()->applies($definition, $name, $route);
  }

}