From fc6154fe4dc093780d610f97c0d9213bb26060fe Mon Sep 17 00:00:00 2001
From: Zach Copley <zach@controlyourself.ca>
Date: Fri, 12 Jun 2009 16:56:43 -0700
Subject: Add a method to check for registered event handlers

---
 lib/event.php | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

(limited to 'lib')

diff --git a/lib/event.php b/lib/event.php
index d815ae54b..4ccee17e6 100644
--- a/lib/event.php
+++ b/lib/event.php
@@ -110,4 +110,32 @@ class Event {
         }
         return ($result !== false);
     }
+
+    /**
+     * Check to see if an event handler exists
+     *
+     * Look to see if there's any handler for a given event, or narrow
+     * by providing the name of a specific plugin class.
+     *
+     * @param string $name Name of the event to look for
+     * @param string $plugin Optional name of the plugin class to look for
+     *
+     * @return boolean flag saying whether such a handler exists
+     *
+     */
+
+    public static function hasHandler($name, $plugin=null) {
+        if (array_key_exists($name, Event::$_handlers)) {
+            if (isset($plugin)) {
+                foreach (Event::$_handlers[$name] as $handler) {
+                    if (get_class($handler[0]) == $plugin) {
+                        return true;
+                    }
+                }
+            } else {
+                return true;
+            }
+        }
+        return false;
+    }
 }
-- 
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