[EventDispatcher] Deprecate LegacyEventDispatcherProxy.

Author: derrabus

Chatter.php

@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\Notifier;
 
+use Symfony\Component\EventDispatcher\Event;
 use Symfony\Component\EventDispatcher\LegacyEventDispatcherProxy;
 use Symfony\Component\Messenger\MessageBusInterface;
 use Symfony\Component\Notifier\Event\MessageEvent;
@@ -33,7 +34,7 @@ public function __construct(TransportInterface $transport, MessageBusInterface $
     {
         $this->transport = $transport;
         $this->bus = $bus;
-        $this->dispatcher = LegacyEventDispatcherProxy::decorate($dispatcher);
+        $this->dispatcher = class_exists(Event::class) ? LegacyEventDispatcherProxy::decorate($dispatcher) : $dispatcher;
     }
 
     public function __toString(): string

Texter.php

@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\Notifier;
 
+use Symfony\Component\EventDispatcher\Event;
 use Symfony\Component\EventDispatcher\LegacyEventDispatcherProxy;
 use Symfony\Component\Messenger\MessageBusInterface;
 use Symfony\Component\Notifier\Event\MessageEvent;
@@ -33,7 +34,7 @@ public function __construct(TransportInterface $transport, MessageBusInterface $
     {
         $this->transport = $transport;
         $this->bus = $bus;
-        $this->dispatcher = LegacyEventDispatcherProxy::decorate($dispatcher);
+        $this->dispatcher = class_exists(Event::class) ? LegacyEventDispatcherProxy::decorate($dispatcher) : $dispatcher;
     }
 
     public function __toString(): string

Transport/AbstractTransport.php

@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\Notifier\Transport;
 
+use Symfony\Component\EventDispatcher\Event;
 use Symfony\Component\EventDispatcher\LegacyEventDispatcherProxy;
 use Symfony\Component\HttpClient\HttpClient;
 use Symfony\Component\Notifier\Event\MessageEvent;
@@ -45,7 +46,7 @@ public function __construct(HttpClientInterface $client = null, EventDispatcherI
             $this->client = HttpClient::create();
         }
 
-        $this->dispatcher = LegacyEventDispatcherProxy::decorate($dispatcher);
+        $this->dispatcher = class_exists(Event::class) ? LegacyEventDispatcherProxy::decorate($dispatcher) : $dispatcher;
     }
 
     /**

Transport/AbstractTransportFactory.php

@@ -11,14 +11,14 @@
 
 namespace Symfony\Component\Notifier\Transport;
 
+use Symfony\Component\EventDispatcher\Event;
 use Symfony\Component\EventDispatcher\LegacyEventDispatcherProxy;
 use Symfony\Component\Notifier\Exception\IncompleteDsnException;
 use Symfony\Contracts\EventDispatcher\EventDispatcherInterface;
 use Symfony\Contracts\HttpClient\HttpClientInterface;
 
 /**
  * @author Konstantin Myakshin <molodchick@gmail.com>
- *
  * @author Fabien Potencier <fabien@symfony.com>
  *
  * @experimental in 5.0
@@ -30,7 +30,7 @@ abstract class AbstractTransportFactory implements TransportFactoryInterface
 
     public function __construct(EventDispatcherInterface $dispatcher = null, HttpClientInterface $client = null)
     {
-        $this->dispatcher = LegacyEventDispatcherProxy::decorate($dispatcher);
+        $this->dispatcher = class_exists(Event::class) ? LegacyEventDispatcherProxy::decorate($dispatcher) : $dispatcher;
         $this->client = $client;
     }