Initial Kohana install

[speedfreak] / Server / system / libraries / Event_Subject.php

diff --git a/Server/system/libraries/Event_Subject.php b/Server/system/libraries/Event_Subject.php
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+++ b/Server/system/libraries/Event_Subject.php
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+<?php defined('SYSPATH') OR die('No direct access allowed.');
+/**
+ * Kohana event subject. Uses the SPL observer pattern.
+ *
+ * $Id: Event_Subject.php 3769 2008-12-15 00:48:56Z zombor $
+ *
+ * @package    Core
+ * @author     Kohana Team
+ * @copyright  (c) 2007-2008 Kohana Team
+ * @license    http://kohanaphp.com/license.html
+ */
+abstract class Event_Subject implements SplSubject {
+
+       // Attached subject listeners
+       protected $listeners = array();
+
+       /**
+        * Attach an observer to the object.
+        *
+        * @chainable
+        * @param   object  Event_Observer
+        * @return  object
+        */
+       public function attach(SplObserver $obj)
+       {
+               if ( ! ($obj instanceof Event_Observer))
+                       throw new Kohana_Exception('eventable.invalid_observer', get_class($obj), get_class($this));
+
+               // Add a new listener
+               $this->listeners[spl_object_hash($obj)] = $obj;
+
+               return $this;
+       }
+
+       /**
+        * Detach an observer from the object.
+        *
+        * @chainable
+        * @param   object  Event_Observer
+        * @return  object
+        */
+       public function detach(SplObserver $obj)
+       {
+               // Remove the listener
+               unset($this->listeners[spl_object_hash($obj)]);
+
+               return $this;
+       }
+
+       /**
+        * Notify all attached observers of a new message.
+        *
+        * @chainable
+        * @param   mixed   message string, object, or array
+        * @return  object
+        */
+       public function notify($message)
+       {
+               foreach ($this->listeners as $obj)
+               {
+                       $obj->notify($message);
+               }
+
+               return $this;
+       }
+
+} // End Event Subject
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