Added composer dependency and class from Phpforce common package

composer.json

@@ -13,7 +13,8 @@
     ],
     "require": {
         "php": ">=5.3.0",
-        "psr/log": "*"
+        "psr/log": "*",
+        "symfony/event-dispatcher": ">=2.1"
     },
     "require-dev": {
         "doctrine/common": ">=2.3"

src/Phpforce/Common/AbstractHasDispatcher.php

@@ -0,0 +1,52 @@
+<?php
+namespace Phpforce\Common;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Component\EventDispatcher\EventDispatcher;
+use Symfony\Component\EventDispatcher\Event;
+/**
+ * Can be extended by classes that dispatch events using the event dispatcher
+ *
+ */
+abstract class AbstractHasDispatcher
+{
+    /**
+     * @var EventDispatcherInterface
+     */
+    protected $eventDispatcher;
+    /**
+     * Set event dispatcher
+     *
+     * @param EventDispatcherInterface $eventDispatcher
+     */
+    public function setEventDispatcher(EventDispatcherInterface $eventDispatcher)
+    {
+        $this->eventDispatcher = $eventDispatcher;
+    }
+    /**
+     * Get event dispatcher
+     *
+     * If no event dispatcher is supplied, a new one is created. This one will
+     * then be used internally by the Accelerate library.
+     *
+     * @return EventDispatcherInterface
+     */
+    public function getEventDispatcher()
+    {
+        if (null == $this->eventDispatcher) {
+            $this->eventDispatcher = new EventDispatcher();
+        }
+        return $this->eventDispatcher;
+    }
+    /**
+     * Dispatch an event
+     *
+     * @param string $name  Name of event: see Events.php
+     * @param Event  $event Event object
+     *
+     * @return Event
+     */
+    protected function dispatch($name, Event $event)
+    {
+        return $this->getEventDispatcher()->dispatch($name, $event);
+    }
+}