<?php
  
  namespace Guzzle\Common;
  
  use Symfony\Component\EventDispatcher\Event as SymfonyEvent;
  
  /**
   * Default event for Guzzle notifications
   */
  class Event extends SymfonyEvent implements ToArrayInterface, \ArrayAccess, \IteratorAggregate
  {
      /** @var array */
      private $context;
  
      /**
       * @param array $context Contextual information
       */
      public function __construct(array $context = array())
      {
          $this->context = $context;
      }
  
      public function getIterator()
      {
          return new \ArrayIterator($this->context);
      }
  
      public function offsetGet($offset)
      {
          return isset($this->context[$offset]) ? $this->context[$offset] : null;
      }
  
      public function offsetSet($offset, $value)
      {
          $this->context[$offset] = $value;
      }
  
      public function offsetExists($offset)
      {
          return isset($this->context[$offset]);
      }
  
      public function offsetUnset($offset)
      {
          unset($this->context[$offset]);
      }
  
      public function toArray()
      {
          return $this->context;
      }
  }