<?php

/*
 * This file is part of SwiftMailer.
 * (c) 2004-2009 Chris Corbyn
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * Observes changes in an Mime entity's character set.
 * @package Swift
 * @subpackage Mime
 * @author Chris Corbyn
 */
interface Swift_Mime_CharsetObserver
{
  
  /**
   * Notify this observer that the entity's charset has changed.
   * @param string $charset
   */
  public function charsetChanged($charset);
  
}
