<?php
/*
* This file is part of the Silex framework.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Silex;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent;
/**
* Wraps view listeners.
*
* @author Dave Marshall <dave@atst.io>
*/
class ViewListenerWrapper
{
private $app;
private $callback;
/**
* Constructor.
*
* @param Application $app An Application instance
* @param mixed $callback
*/
public function __construct(Application $app, $callback)
{
$this->app = $app;
$this->callback = $callback;
}
public function __invoke(GetResponseForControllerResultEvent $event)
{
$controllerResult = $event->getControllerResult();
$callback = $this->app['callback_resolver']->resolveCallback($this->callback);
if (!$this->shouldRun($callback, $controllerResult)) {
return;
}
$response = call_user_func($callback, $controllerResult, $event->getRequest());
if ($response instanceof Response) {
$event->setResponse($response);
} elseif (null !== $response) {
$event->setControllerResult($response);
}
}
private function shouldRun($callback, $controllerResult)
{
if (is_array($callback)) {
$callbackReflection = new \ReflectionMethod($callback[0], $callback[1]);
} elseif (is_object($callback) && !$callback instanceof \Closure) {
$callbackReflection = new \ReflectionObject($callback);
$callbackReflection = $callbackReflection->getMethod('__invoke');
} else {
$callbackReflection = new \ReflectionFunction($callback);
}
if ($callbackReflection->getNumberOfParameters() > 0) {
$parameters = $callbackReflection->getParameters();
$expectedControllerResult = $parameters[0];
if ($expectedControllerResult->getClass() && (!is_object($controllerResult) || !$expectedControllerResult->getClass()->isInstance($controllerResult))) {
return false;
}
if ($expectedControllerResult->isArray() && !is_array($controllerResult)) {
return false;
}
if (method_exists($expectedControllerResult, 'isCallable') && $expectedControllerResult->isCallable() && !is_callable($controllerResult)) {
return false;
}
}
return true;
}
}
