1 <?php

     2 /**

     3  * Zend Framework

     4  *

     5  * LICENSE

     6  *

     7  * This source file is subject to the new BSD license that is bundled

     8  * with this package in the file LICENSE.txt.

     9  * It is also available through the world-wide-web at this URL:

    10  * http://framework.zend.com/license/new-bsd

    11  * If you did not receive a copy of the license and are unable to

    12  * obtain it through the world-wide-web, please send an email

    13  * to license@zend.com so we can send you a copy immediately.

    14  *

    15  * @category   Zend

    16  * @package    Zend_Controller

    17  * @subpackage Zend_Controller_Action_Helper

    18  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    19  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    20  * @version    $Id: AjaxContext.php 20096 2010-01-06 02:05:09Z bkarwin $

    21  */

    22 

    23 /**

    24  * @see Zend_Controller_Action_Helper_ContextSwitch

    25  */

    26 require_once 'Zend/Controller/Action/Helper/ContextSwitch.php';

    27 

    28 /**

    29  * Simplify AJAX context switching based on requested format

    30  *

    31  * @uses       Zend_Controller_Action_Helper_Abstract

    32  * @category   Zend

    33  * @package    Zend_Controller

    34  * @subpackage Zend_Controller_Action_Helper

    35  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    36  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    37  */

    38 class Zend_Controller_Action_Helper_AjaxContext extends Zend_Controller_Action_Helper_ContextSwitch

    39 {

    40     /**

    41      * Controller property to utilize for context switching

    42      * @var string

    43      */

    44     protected $_contextKey = 'ajaxable';

    45 

    46     /**

    47      * Constructor

    48      *

    49      * Add HTML context

    50      *

    51      * @return void

    52      */

    53     public function __construct()

    54     {

    55         parent::__construct();

    56         $this->addContext('html', array('suffix' => 'ajax'));

    57     }

    58 

    59     /**

    60      * Initialize AJAX context switching

    61      *

    62      * Checks for XHR requests; if detected, attempts to perform context switch.

    63      *

    64      * @param  string $format

    65      * @return void

    66      */

    67     public function initContext($format = null)

    68     {

    69         $this->_currentContext = null;

    70 

    71         if (!$this->getRequest()->isXmlHttpRequest()) {

    72             return;

    73         }

    74 

    75         return parent::initContext($format);

    76     }

    77 }