add method to check if a hook has been definedticket/4569

1 files changed, 14 insertions, 0 deletions

diff --git a/lib/kolab_hooks.php b/lib/kolab_hooks.php
index 1ffff31..9a91188 100644
--- a/lib/kolab_hooks.php
+++ b/lib/kolab_hooks.php
@@ -58,6 +58,20 @@ class kolab_hooks {
     }
 
     /**
+     * check if callbacks are registered for a given hook
+     *
+     * @static
+     * @param string $hook Hook name
+     * @return bool
+     */
+    public static function exists($hook)
+    {
+        return isset(self::$handlers[$hook])
+            && is_array(self::$handlers[$hook])
+            && count(self::$handlers[$hook]);
+    }
+
+    /**
      * register a callback function for a certain hook
      *
      * @static