<?php
  
  namespace Guzzle\Common;
  
  use Symfony\Component\EventDispatcher\EventDispatcherInterface;
  use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  
  /**
   * Holds an event dispatcher
   */
  interface HasDispatcherInterface
  {
      /**
       * Get a list of all of the events emitted from the class
       *
       * @return array
       */
      public static function getAllEvents();
  
      /**
       * Set the EventDispatcher of the request
       *
       * @param EventDispatcherInterface $eventDispatcher
       *
       * @return self
       */
      public function setEventDispatcher(EventDispatcherInterface $eventDispatcher);
  
      /**
       * Get the EventDispatcher of the request
       *
       * @return EventDispatcherInterface
       */
      public function getEventDispatcher();
  
      /**
       * Helper to dispatch Guzzle events and set the event name on the event
       *
       * @param string $eventName Name of the event to dispatch
       * @param array  $context   Context of the event
       *
       * @return Event Returns the created event object
       */
      public function dispatch($eventName, array $context = array());
  
      /**
       * Add an event subscriber to the dispatcher
       *
       * @param EventSubscriberInterface $subscriber Event subscriber
       *
       * @return self
       */
      public function addSubscriber(EventSubscriberInterface $subscriber);
  }