--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/EventManager/SharedEventManager.php	Thu Mar 21 19:52:38 2013 +0100
@@ -0,0 +1,148 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_EventManager
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+
+require_once 'Zend/EventManager/EventManager.php';
+require_once 'Zend/EventManager/SharedEventCollection.php';
+
+/**
+ * Shared/contextual EventManager
+ *
+ * Allows attaching to EMs composed by other classes without having an instance first.
+ * The assumption is that the SharedEventManager will be injected into EventManager 
+ * instances, and then queried for additional listeners when triggering an event.
+ *
+ * @category   Zend
+ * @package    Zend_EventManager
+ * @copyright  Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_EventManager_SharedEventManager implements Zend_EventManager_SharedEventCollection
+{
+    /**
+     * Identifiers with event connections
+     * @var array
+     */
+    protected $identifiers = array();
+
+    /**
+     * Attach a listener to an event
+     *
+     * Allows attaching a callback to an event offerred by one or more 
+     * identifying components. As an example, the following connects to the 
+     * "getAll" event of both an AbstractResource and EntityResource:
+     *
+     * <code>
+     * SharedEventManager::getInstance()->connect(
+     *     array('My\Resource\AbstractResource', 'My\Resource\EntityResource'),
+     *     'getOne',
+     *     function ($e) use ($cache) {
+     *         if (!$id = $e->getParam('id', false)) {
+     *             return;
+     *         }
+     *         if (!$data = $cache->load(get_class($resource) . '::getOne::' . $id )) {
+     *             return;
+     *         }
+     *         return $data;
+     *     }
+     * );
+     * </code>
+     * 
+     * @param  string|array $id Identifier(s) for event emitting component(s)
+     * @param  string $event 
+     * @param  callback $callback PHP Callback
+     * @param  int $priority Priority at which listener should execute
+     * @return void
+     */
+    public function attach($id, $event, $callback, $priority = 1)
+    {
+        $ids = (array) $id;
+        foreach ($ids as $id) {
+            if (!array_key_exists($id, $this->identifiers)) {
+                $this->identifiers[$id] = new Zend_EventManager_EventManager();
+            }
+            $this->identifiers[$id]->attach($event, $callback, $priority);
+        }
+    }
+
+    /**
+     * Detach a listener from an event offered by a given resource
+     * 
+     * @param  string|int $id
+     * @param  Zend_Stdlib_CallbackHandler $listener 
+     * @return bool Returns true if event and listener found, and unsubscribed; returns false if either event or listener not found
+     */
+    public function detach($id, Zend_Stdlib_CallbackHandler $listener)
+    {
+        if (!array_key_exists($id, $this->identifiers)) {
+            return false;
+        }
+        return $this->identifiers[$id]->detach($listener);
+    }
+
+    /**
+     * Retrieve all registered events for a given resource
+     * 
+     * @param  string|int $id
+     * @return array
+     */
+    public function getEvents($id)
+    {
+        if (!array_key_exists($id, $this->identifiers)) {
+            return false;
+        }
+        return $this->identifiers[$id]->getEvents();
+    }
+
+    /**
+     * Retrieve all listeners for a given identifier and event
+     * 
+     * @param  string|int $id
+     * @param  string|int $event 
+     * @return false|Zend_Stdlib_PriorityQueue
+     */
+    public function getListeners($id, $event)
+    {
+        if (!array_key_exists($id, $this->identifiers)) {
+            return false;
+        }
+        return $this->identifiers[$id]->getListeners($event);
+    }
+
+    /**
+     * Clear all listeners for a given identifier, optionally for a specific event
+     * 
+     * @param  string|int $id 
+     * @param  null|string $event 
+     * @return bool
+     */
+    public function clearListeners($id, $event = null)
+    {
+        if (!array_key_exists($id, $this->identifiers)) {
+            return false;
+        }
+
+        if (null === $event) {
+            unset($this->identifiers[$id]);
+            return true;
+        }
+
+        return $this->identifiers[$id]->clearListeners($event);
+    }
+}