<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

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

 * with this package in the file LICENSE.txt.

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

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

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

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

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

 *

 * @category   Zend

 * @package    Zend_View

 * @subpackage Helper

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

 * @version    $Id: Json.php 23451 2010-11-28 13:10:03Z ramon $

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

 */

/** Zend_Json */

require_once 'Zend/Json.php';

/** Zend_Controller_Front */

require_once 'Zend/Controller/Front.php';

/** Zend_View_Helper_Abstract.php */

require_once 'Zend/View/Helper/Abstract.php';

/**

 * Helper for simplifying JSON responses

 *

 * @package    Zend_View

 * @subpackage Helper

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

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

 */

class Zend_View_Helper_Json extends Zend_View_Helper_Abstract

{

    /**

     * Encode data as JSON, disable layouts, and set response header

     *

     * If $keepLayouts is true, does not disable layouts.

     *

     * @param  mixed $data

     * @param  bool $keepLayouts

     * NOTE:   if boolean, establish $keepLayouts to true|false

     *         if array, admit params for Zend_Json::encode as enableJsonExprFinder=>true|false

     *         this array can contains a 'keepLayout'=>true|false

     *         that will not be passed to Zend_Json::encode method but will be used here

     * @return string|void

     */

    public function json($data, $keepLayouts = false)

    {

        $options = array();

        if (is_array($keepLayouts))

        {

            $options     = $keepLayouts;

            $keepLayouts = (array_key_exists('keepLayouts', $keepLayouts))

                            ? $keepLayouts['keepLayouts']

                            : false;

            unset($options['keepLayouts']);

        }

        $data = Zend_Json::encode($data, null, $options);

        if (!$keepLayouts) {

            require_once 'Zend/Layout.php';

            $layout = Zend_Layout::getMvcInstance();

            if ($layout instanceof Zend_Layout) {

                $layout->disableLayout();

            }

        }

        $response = Zend_Controller_Front::getInstance()->getResponse();

        $response->setHeader('Content-Type', 'application/json', true);

        return $data;

    }

}