Listener.php in Flickr API 5

File

phpFlickr/PEAR/HTTP/Request/Listener.php

<?php

/**
 * Listener for HTTP_Request and HTTP_Response objects
 *
 * PHP versions 4 and 5
 * 
 * LICENSE:
 *
 * Copyright (c) 2002-2007, Richard Heyes
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * o Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * o Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * o The names of the authors may not be used to endorse or promote
 *   products derived from this software without specific prior written
 *   permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * @category    HTTP
 * @package     HTTP_Request
 * @author      Alexey Borzov <[e-mail]>
 * @copyright   2002-2007 Richard Heyes
 * @license     http://opensource.org/licenses/bsd-license.php New BSD License
 * @link        http://pear.php.net/package/HTTP_Request/ 
 */

/**
 * Listener for HTTP_Request and HTTP_Response objects
 *
 * This class implements the Observer part of a Subject-Observer
 * design pattern.
 *
 * @category    HTTP
 * @package     HTTP_Request
 * @author      Alexey Borzov <[e-mail]>
 * @version     Release: 1.4.2
 */
class HTTP_Request_Listener {

  /**
   * A listener's identifier
   * @var string
   */
  var $_id;

  /**
   * Constructor, sets the object's identifier
   *
   * @access public
   */
  function HTTP_Request_Listener() {
    $this->_id = md5(uniqid('http_request_', 1));
  }

  /**
   * Returns the listener's identifier
   *
   * @access public
   * @return string
   */
  function getId() {
    return $this->_id;
  }

  /**
   * This method is called when Listener is notified of an event
   *
   * @access   public
   * @param    object  an object the listener is attached to
   * @param    string  Event name
   * @param    mixed   Additional data
   * @abstract
   */
  function update(&$subject, $event, $data = null) {
    echo "Notified of event: '{$event}'\n";
    if (null !== $data) {
      echo "Additional data: ";
      var_dump($data);
    }
  }

}

Classes

Name	Description
HTTP_Request_Listener	Listener for HTTP_Request and HTTP_Response objects