X-Git-Url: https://vcs.fsf.org/?a=blobdiff_plain;f=Civi%2FCore%2FCiviEventDispatcher.php;h=9f3da3215e4fcacc0659bf4836632f05e5313e05;hb=ffc370ffa721fecfaee7cd615119412f5bbf6e67;hp=18d8aa30438ddebef9d8b6bd078d078f54fa1c82;hpb=f70de7b0f4cbdee6f8e75e38db37e12efccc2ccf;p=civicrm-core.git

diff --git a/Civi/Core/CiviEventDispatcher.php b/Civi/Core/CiviEventDispatcher.php
index 18d8aa3043..9f3da3215e 100644
--- a/Civi/Core/CiviEventDispatcher.php
+++ b/Civi/Core/CiviEventDispatcher.php
@@ -2,7 +2,7 @@
 
 namespace Civi\Core;
 
-use Symfony\Component\EventDispatcher\ContainerAwareEventDispatcher;
+use Symfony\Component\EventDispatcher\EventDispatcher;
 use Symfony\Component\EventDispatcher\Event;
 
 /**
@@ -15,7 +15,7 @@ use Symfony\Component\EventDispatcher\Event;
  *
  * @see \CRM_Utils_Hook
  */
-class CiviEventDispatcher extends ContainerAwareEventDispatcher {
+class CiviEventDispatcher extends EventDispatcher {
 
   const DEFAULT_HOOK_PRIORITY = -100;
 
@@ -61,6 +61,34 @@ class CiviEventDispatcher extends ContainerAwareEventDispatcher {
     return (substr($eventName, 0, 5) === 'hook_') && (strpos($eventName, '::') === FALSE);
   }
 
+  /**
+   * Adds a service as event listener.
+   *
+   * This provides partial backwards compatibility with ContainerAwareEventDispatcher.
+   *
+   * @param string $eventName Event for which the listener is added
+   * @param array $callback The service ID of the listener service & the method
+   *                        name that has to be called
+   * @param int $priority The higher this value, the earlier an event listener
+   *                      will be triggered in the chain.
+   *                      Defaults to 0.
+   *
+   * @throws \InvalidArgumentException
+   */
+  public function addListenerService($eventName, $callback, $priority = 0) {
+    if (!\is_array($callback) || 2 !== \count($callback)) {
+      throw new \InvalidArgumentException('Expected an array("service", "method") argument');
+    }
+
+    $this->addListener($eventName, function($event) use ($callback) {
+      static $svc;
+      if ($svc === NULL) {
+        $svc = \Civi::container()->get($callback[0]);
+      }
+      return call_user_func([$svc, $callback[1]], $event);
+    }, $priority);
+  }
+
   /**
    * @inheritDoc
    */