5 files changed, 191 insertions, 0 deletions
diff --git a/phpBB/includes/event/data.php b/phpBB/includes/event/data.php
new file mode 100644
index 0000000000..47cb2d5a30
--- /dev/null
+++ b/phpBB/includes/event/data.php
@@ -0,0 +1,68 @@
+<?php
+/**
+*
+* @package phpBB3
+* @copyright (c) 2011 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+    exit;
+}
+
+use Symfony\Component\EventDispatcher\Event;
+
+class phpbb_event_data extends Event implements ArrayAccess
+{
+    private $data;
+
+    public function __construct(array $data = array())
+    {
+        $this->set_data($data);
+    }
+
+    public function set_data(array $data = array())
+    {
+        $this->data = $data;
+    }
+
+    public function get_data()
+    {
+        return $this->data;
+    }
+
+    /**
+     * Returns data filtered to only include specified keys.
+     *
+     * This effectively discards any keys added to data by hooks.
+     */
+    public function get_data_filtered($keys)
+    {
+        return array_intersect_key($this->data, array_flip($keys));
+    }
+
+    public function offsetExists($offset)
+    {
+        return isset($this->data[$offset]);
+    }
+
+    public function offsetGet($offset)
+    {
+        return isset($this->data[$offset]) ? $this->data[$offset] : null;
+    }
+
+    public function offsetSet($offset, $value)
+    {
+        $this->data[$offset] = $value;
+    }
+
+    public function offsetUnset($offset)
+    {
+        unset($this->data[$offset]);
+    }
+}
diff --git a/phpBB/includes/event/dispatcher.php b/phpBB/includes/event/dispatcher.php
new file mode 100644
index 0000000000..2bf46b9b06
--- /dev/null
+++ b/phpBB/includes/event/dispatcher.php
@@ -0,0 +1,42 @@
+<?php
+/**
+*
+* @package phpBB3
+* @copyright (c) 2012 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+use Symfony\Component\EventDispatcher\EventDispatcher;
+
+/**
+* Extension of the Symfony2 EventDispatcher
+*
+* It provides an additional `trigger_event` method, which
+* gives some syntactic sugar for dispatching events. Instead
+* of creating the event object, the method will do that for
+* you.
+*
+* Example:
+*
+*     $vars = array('page_title');
+*     extract($phpbb_dispatcher->trigger_event('core.index', compact($vars)));
+*
+*/
+class phpbb_event_dispatcher extends EventDispatcher
+{
+	public function trigger_event($eventName, $data = array())
+	{
+		$event = new phpbb_event_data($data);
+		$this->dispatch($eventName, $event);
+		return $event->get_data_filtered(array_keys($data));
+	}
+}
diff --git a/phpBB/includes/event/extension_subscriber_loader.php b/phpBB/includes/event/extension_subscriber_loader.php
new file mode 100644
index 0000000000..71b16b8371
--- /dev/null
+++ b/phpBB/includes/event/extension_subscriber_loader.php
@@ -0,0 +1,46 @@
+<?php
+/**
+*
+* @package phpBB3
+* @copyright (c) 2011 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+
+class phpbb_event_extension_subscriber_loader
+{
+	private $dispatcher;
+	private $extension_manager;
+
+	public function __construct(EventDispatcherInterface $dispatcher, phpbb_extension_manager $extension_manager)
+	{
+		$this->dispatcher = $dispatcher;
+		$this->extension_manager = $extension_manager;
+	}
+
+	public function load()
+	{
+		$finder = $this->extension_manager->get_finder();
+		$subscriber_classes = $finder
+			->extension_directory('/event')
+			->suffix('listener')
+			->core_path('event/')
+			->get_classes();
+
+		foreach ($subscriber_classes as $class)
+		{
+			$subscriber = new $class();
+			$this->dispatcher->addSubscriber($subscriber);
+		}
+	}
+}
diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index 9913a80a70..7a96dd3609 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -4478,6 +4478,7 @@ function phpbb_http_login($param)
 function page_header($page_title = '', $display_online_list = true, $item_id = 0, $item = 'forum')
 {
 	global $db, $config, $template, $SID, $_SID, $_EXTRA_URL, $user, $auth, $phpEx, $phpbb_root_path;
+	global $phpbb_dispatcher;
 
 	if (defined('HEADER_INC'))
 	{
@@ -4761,6 +4762,9 @@ function page_header($page_title = '', $display_online_list = true, $item_id = 0
 		'A_COOKIE_SETTINGS'		=> addslashes('; path=' . $config['cookie_path'] . ((!$config['cookie_domain'] || $config['cookie_domain'] == 'localhost' || $config['cookie_domain'] == '127.0.0.1') ? '' : '; domain=' . $config['cookie_domain']) . ((!$config['cookie_secure']) ? '' : '; secure')),
 	));
 
+	$vars = array('page_title', 'display_online_list', 'item_id', 'item');
+	extract($phpbb_dispatcher->trigger_event('core.page_header', compact($vars)));
+
 	// application/xhtml+xml not used because of IE
 	header('Content-type: text/html; charset=UTF-8');
 
diff --git a/phpBB/includes/startup.php b/phpBB/includes/startup.php
index fc45cd882b..f75d70e366 100644
--- a/phpBB/includes/startup.php
+++ b/phpBB/includes/startup.php
@@ -147,5 +147,36 @@ if (function_exists('date_default_timezone_set') && function_exists('date_defaul
 	date_default_timezone_set(@date_default_timezone_get());
 }
 
+// Autoloading of dependencies.
+// Three options are supported:
+// 1. If dependencies are installed with Composer, Composer will create a
+//    vendor/.composer/autoload.php. If this file exists it will be
+//    automatically used by phpBB. This is the default mode that phpBB
+//    will use when shipped.
+// 2. To disable composer autoloading, PHPBB_NO_COMPOSER_AUTOLOAD can be specified.
+// 	  Additionally specify PHPBB_AUTOLOAD=/path/to/autoload.php in the
+//    environment. This is useful for running CLI scripts and tests.
+//    /path/to/autoload.php should define and register class loaders
+//    for all of phpBB's dependencies.
+// 3. You can also set PHPBB_NO_COMPOSER_AUTOLOAD without setting PHPBB_AUTOLOAD.
+//    In this case autoloading needs to be defined before running any phpBB
+//    script. This might be useful in cases when phpBB is integrated into a
+//    larger program.
+if (getenv('PHPBB_NO_COMPOSER_AUTOLOAD'))
+{
+	if (getenv('PHPBB_AUTOLOAD'))
+	{
+		require(getenv('PHPBB_AUTOLOAD'));
+	}
+}
+else
+{
+	if (!file_exists($phpbb_root_path . 'vendor/.composer/autoload.php'))
+	{
+		trigger_error('You have not set up composer dependencies. See http://getcomposer.org/.', E_USER_ERROR);
+	}
+	require($phpbb_root_path . 'vendor/.composer/autoload.php');
+}
+
 $starttime = explode(' ', microtime());
 $starttime = $starttime[1] + $starttime[0];