Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\HttpKernel\DependencyInjection;
Chris@0: 
Chris@14: use Psr\Container\ContainerInterface;
Chris@0: use Symfony\Component\HttpFoundation\RequestStack;
Chris@0: use Symfony\Component\HttpKernel\Fragment\FragmentHandler;
Chris@0: 
Chris@0: /**
Chris@0:  * Lazily loads fragment renderers from the dependency injection container.
Chris@0:  *
Chris@0:  * @author Fabien Potencier <fabien@symfony.com>
Chris@0:  */
Chris@0: class LazyLoadingFragmentHandler extends FragmentHandler
Chris@0: {
Chris@0:     private $container;
Chris@14:     /**
Chris@14:      * @deprecated since version 3.3, to be removed in 4.0
Chris@14:      */
Chris@17:     private $rendererIds = [];
Chris@17:     private $initialized = [];
Chris@0: 
Chris@0:     /**
Chris@0:      * @param ContainerInterface $container    A container
Chris@0:      * @param RequestStack       $requestStack The Request stack that controls the lifecycle of requests
Chris@0:      * @param bool               $debug        Whether the debug mode is enabled or not
Chris@0:      */
Chris@0:     public function __construct(ContainerInterface $container, RequestStack $requestStack, $debug = false)
Chris@0:     {
Chris@0:         $this->container = $container;
Chris@0: 
Chris@17:         parent::__construct($requestStack, [], $debug);
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Adds a service as a fragment renderer.
Chris@0:      *
Chris@0:      * @param string $name     The service name
Chris@0:      * @param string $renderer The render service id
Chris@14:      *
Chris@14:      * @deprecated since version 3.3, to be removed in 4.0
Chris@0:      */
Chris@0:     public function addRendererService($name, $renderer)
Chris@0:     {
Chris@14:         @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0.', __METHOD__), E_USER_DEPRECATED);
Chris@14: 
Chris@0:         $this->rendererIds[$name] = $renderer;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * {@inheritdoc}
Chris@0:      */
Chris@17:     public function render($uri, $renderer = 'inline', array $options = [])
Chris@0:     {
Chris@14:         // BC 3.x, to be removed in 4.0
Chris@0:         if (isset($this->rendererIds[$renderer])) {
Chris@0:             $this->addRenderer($this->container->get($this->rendererIds[$renderer]));
Chris@14:             unset($this->rendererIds[$renderer]);
Chris@0: 
Chris@14:             return parent::render($uri, $renderer, $options);
Chris@14:         }
Chris@14: 
Chris@14:         if (!isset($this->initialized[$renderer]) && $this->container->has($renderer)) {
Chris@14:             $this->addRenderer($this->container->get($renderer));
Chris@14:             $this->initialized[$renderer] = true;
Chris@0:         }
Chris@0: 
Chris@0:         return parent::render($uri, $renderer, $options);
Chris@0:     }
Chris@0: }