From 62fb019c6283ee0510f34ea188159cdb83fee47b Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien.potencier@gmail.com>
Date: Thu, 17 Nov 2011 08:26:11 +0100
Subject: [PATCH] added event priorities in the profiler

---
 .../Debug/TraceableEventDispatcher.php        | 33 ++++++++++++-------
 .../views/Collector/events.html.twig          |  4 +++
 2 files changed, 25 insertions(+), 12 deletions(-)

diff --git a/src/Symfony/Bundle/FrameworkBundle/Debug/TraceableEventDispatcher.php b/src/Symfony/Bundle/FrameworkBundle/Debug/TraceableEventDispatcher.php
index 27bda5c00a83..770932c2d866 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Debug/TraceableEventDispatcher.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Debug/TraceableEventDispatcher.php
@@ -30,6 +30,7 @@ class TraceableEventDispatcher extends ContainerAwareEventDispatcher implements
     private $logger;
     private $called;
     private $stopwatch;
+    private $priorities;
 
     /**
      * Constructor.
@@ -84,19 +85,11 @@ public function dispatch($eventName, Event $event = null)
     public function addListener($eventName, $listener, $priority = 0)
     {
         if (!is_callable($listener)) {
-            if (is_string($listener)) {
-                $typeDefinition = '[string] '.$listener;
-            } elseif (is_array($listener)) {
-                $typeDefinition = '[array] '.(is_object($listener[0]) ? get_class($listener[0]) : $listener[0]).'::'.$listener[1];
-            } elseif (is_object($listener)) {
-                $typeDefinition = '[object] '.get_class($listener);
-            } else {
-                $typeDefinition = '[?] '.var_export($listener, true);
-            }
-
-            throw new \RuntimeException(sprintf('The given callback (%s) for event "%s" is not callable.', $typeDefinition, $eventName));
+            throw new \RuntimeException(sprintf('The given callback (%s) for event "%s" is not callable.', $this->getListenerAsString($listener), $eventName));
         }
 
+        $this->priorities[$eventName.'_'.$this->getListenerAsString($listener)] = $priority;
+
         parent::addListener($eventName, $listener, $priority);
     }
 
@@ -203,7 +196,10 @@ public function getNotCalledListeners()
      */
     private function getListenerInfo($listener, $eventName)
     {
-        $info = array('event' => $eventName);
+        $info = array(
+            'event'    => $eventName,
+            'priority' => $this->priorities[$eventName.'_'.$this->getListenerAsString($listener)],
+        );
         if ($listener instanceof \Closure) {
             $info += array(
                 'type' => 'Closure',
@@ -271,4 +267,17 @@ private function updateProfile($token)
             $profiler->saveProfile($child);
         }
     }
+
+    private function getListenerAsString($listener)
+    {
+        if (is_string($listener)) {
+            return '[string] '.$listener;
+        } elseif (is_array($listener)) {
+            return '[array] '.(is_object($listener[0]) ? get_class($listener[0]) : $listener[0]).'::'.$listener[1];
+        } elseif (is_object($listener)) {
+            return '[object] '.get_class($listener);
+        }
+
+        return '[?] '.var_export($listener, true);
+    }
 }
diff --git a/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Collector/events.html.twig b/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Collector/events.html.twig
index ba994c8ae613..6fc8f6f897f2 100644
--- a/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Collector/events.html.twig
+++ b/src/Symfony/Bundle/WebProfilerBundle/Resources/views/Collector/events.html.twig
@@ -15,11 +15,13 @@
     <table>
         <tr>
             <th>Event name</th>
+            <th>Priority</th>
             <th>Listener</th>
         </tr>
         {% for listener in collector.calledlisteners %}
             <tr>
                 <td><code>{{ listener.event }}</code></td>
+                <td><code>{{ listener.priority }}</code></td>
                 <td><code>{{ display_listener(listener) }}</code></td>
             </tr>
         {% endfor %}
@@ -31,12 +33,14 @@
         <table>
             <tr>
                 <th>Event name</th>
+                <th>Priority</th>
                 <th>Listener</th>
             </tr>
             {% set listeners = collector.notcalledlisteners %}
             {% for listener in listeners|keys|sort %}
                 <tr>
                     <td><code>{{ listeners[listener].event }}</code></td>
+                    <td><code>{{ listeners[listener].priority }}</code></td>
                     <td><code>{{ display_listener(listeners[listener]) }}</code></td>
                 </tr>
             {% endfor %}