Create StaticEventSubscriber

src/EventSubscriber/HookEventSubscriber.php

@@ -10,24 +10,24 @@ declare(strict_types = 1);
 namespace Friendica\EventSubscriber;
 
 use Friendica\Event\DataFilterEvent;
-use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
 /**
  * Bridge between the EventDispatcher and the Hook class.
  */
-final class HookEventSubscriber implements EventSubscriberInterface
+final class HookEventSubscriber implements StaticEventSubscriber
 {
 	/**
 	 * @return array<string, string>
 	 */
-	public static function getSubscribedEvents(): array
+	public static function getStaticSubscribedEvents(): array
 	{
 		return [
 			DataFilterEvent::class => 'onDataFilterEvent',
 		];
 	}
 
-	public function onDataFilterEvent(DataFilterEvent $event): void
+	public static function onDataFilterEvent(DataFilterEvent $event): void
 	{
+		// Call the Hook class to process the event
 	}
 }

src/EventSubscriber/StaticEventSubscriber.php

@@ -0,0 +1,32 @@
+<?php
+
+// Copyright (C) 2010-2024, the Friendica project
+// SPDX-FileCopyrightText: 2010-2024 the Friendica project
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+declare(strict_types = 1);
+
+namespace Friendica\EventSubscriber;
+
+/**
+ * Define events that should be reacted to.
+ */
+interface StaticEventSubscriber
+{
+	/**
+	 * Return an array of events to subscribe to.
+	 * The key must the event class name.
+	 * The value must the method of the implementing class to call.
+	 * The method will be called statically with the event class as first parameter.
+	 *
+	 * Example:
+	 *
+	 * ```php
+	 * return [Event::class => 'onEvent'];
+	 * ```
+	 *
+	 * @return array<class-string, string>
+	 */
+	public static function getStaticSubscribedEvents(): array;
+}

tests/Unit/EventSubscriber/HookEventSubscriberTest.php

@@ -11,26 +11,37 @@ namespace Friendica\Test\Unit\EventSubscriber;
 
 use Friendica\Event\DataFilterEvent;
 use Friendica\EventSubscriber\HookEventSubscriber;
+use Friendica\EventSubscriber\StaticEventSubscriber;
 use PHPUnit\Framework\TestCase;
-use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
 class HookEventSubscriberTest extends TestCase
 {
 	public function testCorrectImplementation(): void
 	{
 		$this->assertTrue(
-			is_subclass_of(HookEventSubscriber::class, EventSubscriberInterface::class, true),
-			HookEventSubscriber::class . ' does not implement ' . EventSubscriberInterface::class
+			is_subclass_of(HookEventSubscriber::class, StaticEventSubscriber::class, true),
+			HookEventSubscriber::class . ' does not implement ' . StaticEventSubscriber::class
 		);
 	}
 
-	public function testGetSubscribedEvents(): void
+	public function testGetStaticSubscribedEventsReturnsStaticMethods(): void
 	{
-		$this->assertSame(
-			[
+		$expected = [
 			DataFilterEvent::class => 'onDataFilterEvent',
-			],
-			HookEventSubscriber::getSubscribedEvents()
+		];
+
+		$this->assertSame(
+			$expected,
+			HookEventSubscriber::getStaticSubscribedEvents()
+		);
+
+		foreach ($expected as $methodName) {
+			$this->assertTrue(method_exists(HookEventSubscriber::class, $methodName));
+
+			$this->assertTrue(
+				(new \ReflectionMethod(HookEventSubscriber::class, $methodName))->isStatic(),
+				$methodName . ' is not static'
 			);
 		}
+	}
 }