* application event handling module

3 files changed, 61 insertions, 0 deletions

diff --git a/app/php/application.xml b/app/php/application.xml
index b89de7e..ec23f55 100644
--- a/app/php/application.xml
+++ b/app/php/application.xml
@@ -15,6 +15,8 @@
   <include file="Application.pages.config" />
   <include file="Application.controls.config" />
 
+  <include file="Application.events.config" />
+
   <modules>
     <!-- <module id="log" class="System.Util.TLogRouter">
       <route class="TBrowserLogRoute"
diff --git a/app/php/events/EventModule.php b/app/php/events/EventModule.php
new file mode 100644
index 0000000..6474523
--- /dev/null
+++ b/app/php/events/EventModule.php
@@ -0,0 +1,53 @@
+<?php
+
+class EventModule extends TModule {
+
+    public function init($config) {
+        $reflection = new ReflectionClass($this);
+        foreach ($reflection->getMethods() as $method) {
+            if (is_a($method->class, get_class(), TRUE)) {
+                $eventPattern = [];
+                if (preg_match('/^on(.*)/', $method->name, $eventPattern)) {
+                    $this->_registerEventHandler(
+                        $eventPattern[1],
+                        $method->getClosure($this)
+                    );
+                }
+            }
+        }
+        if (get_class() === get_called_class()) {
+            $directory = dirname(__FILE__);
+            foreach (scandir($directory) as $dirEntry) {
+                $classNameMatch = [];
+                if (preg_match('/(.*)\.php$/', $dirEntry, $classNameMatch)) {
+                    $className = $classNameMatch[1];
+                    include_once($directory . DIRECTORY_SEPARATOR . $dirEntry);
+                    if ($className != get_class()
+                        && is_a($className, get_class(), TRUE)) {
+                        $class = new $className();
+                        $class->init(NULL);
+                    }
+                }
+            }
+        }
+    }
+
+    protected static $_handlers = [];
+    private function _registerEventHandler($event, $handler) {
+        if (!isset(self::$_handlers[$event])) {
+            self::$_handlers[$event] = [];
+        }
+        self::$_handlers[$event][] = $handler;
+    }
+
+    public function raiseApplicationEvent($event, ...$params) {
+        if (isset(self::$_handlers[$event])) {
+            foreach (self::$_handlers[$event] as $handler) {
+                call_user_func_array($handler, $params);
+            }
+        }
+    }
+
+}
+
+?>
diff --git a/app/php/events/config.xml b/app/php/events/config.xml
new file mode 100644
index 0000000..d1c1e3f
--- /dev/null
+++ b/app/php/events/config.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <modules>
+    <module id="events" class="Application.events.EventModule" />
+  </modules>
+</configuration>