Initial commit

pluf/src/Pluf/Signal.php

@@ -0,0 +1,66 @@
+<?php
+/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+# ***** BEGIN LICENSE BLOCK *****
+# This file is part of Plume Framework, a simple PHP Application Framework.
+# Copyright (C) 2001-2007 Loic d'Anterroches and contributors.
+#
+# Plume Framework is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation; either version 2.1 of the License, or
+# (at your option) any later version.
+#
+# Plume Framework is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+# ***** END LICENSE BLOCK ***** */
+
+/**
+ * Signal system.
+ */
+class Pluf_Signal
+{
+
+    /**
+     * Send a signal.
+     *
+     * @param string Signal to be sent.
+     * @param string Sender.
+     * @param array Parameters
+     * @return void
+     */
+    public static function send($signal, $sender, &$params=array())
+    {
+        if (!empty($GLOBALS['_PX_signal'][$signal])) {
+            foreach ($GLOBALS['_PX_signal'][$signal] as $key=>$val) {
+                if ($val[2] === null or $sender == $val[2]) {
+                    call_user_func_array(array($val[0], $val[1]), 
+                                         array($signal, &$params));
+                }
+            }
+        }
+    }
+
+
+    /**
+     * Connect to a signal.
+     *
+     * @param string Name of the signal.
+     * @param array array('class', 'method') handling the signal.
+     * @param string Optional sender filtering.
+     */
+    public static function connect($signal, $who, $sender=null)
+    {
+        if (!isset($GLOBALS['_PX_signal'][$signal])) {
+            $GLOBALS['_PX_signal'][$signal] = array();
+        }
+        $GLOBALS['_PX_signal'][$signal][] = array($who[0], $who[1], $sender);
+    }
+}
+