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 <?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) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @version    $Id$
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 
 /** Zend_View_Helper_Abstract.php */
 // require_once 'Zend/View/Helper/Abstract.php';
 
 /**
  * Helper for rendering output of a controller action
  *
  * @package    Zend_View
  * @subpackage Helper
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_View_Helper_Action extends Zend_View_Helper_Abstract
 {
     /**
      * @var string
      */
     public $defaultModule;
 
     /**
      * @var Zend_Controller_Dispatcher_Interface
      */
     public $dispatcher;
 
     /**
      * @var Zend_Controller_Request_Abstract
      */
     public $request;
 
     /**
      * @var Zend_Controller_Response_Abstract
      */
     public $response;
 
     /**
      * Constructor
      *
      * Grab local copies of various MVC objects
      *
      * @return void
      */
     public function __construct()
     {
         $front   = Zend_Controller_Front::getInstance();
         $modules = $front->getControllerDirectory();
         if (empty($modules)) {
             // require_once 'Zend/View/Exception.php';
             $e = new Zend_View_Exception('Action helper depends on valid front controller instance');
             $e->setView($this->view);
             throw $e;
         }
 
         $request  = $front->getRequest();
         $response = $front->getResponse();
 
         if (empty($request) || empty($response)) {
             // require_once 'Zend/View/Exception.php';
             $e = new Zend_View_Exception('Action view helper requires both a registered request and response object in the front controller instance');
             $e->setView($this->view);
             throw $e;
         }
 
         $this->request       = clone $request;
         $this->response      = clone $response;
         $this->dispatcher    = clone $front->getDispatcher();
         $this->defaultModule = $front->getDefaultModule();
     }
 
     /**
      * Reset object states
      *
      * @return void
      */
     public function resetObjects()
     {
         $params = $this->request->getUserParams();
         foreach (array_keys($params) as $key) {
             $this->request->setParam($key, null);
         }
 
         $this->response->clearBody();
         $this->response->clearHeaders()
                        ->clearRawHeaders();
     }
 
     /**
      * Retrieve rendered contents of a controller action
      *
      * If the action results in a forward or redirect, returns empty string.
      *
      * @param  string $action
      * @param  string $controller
      * @param  string $module Defaults to default module
      * @param  array $params
      * @return string
      */
     public function action($action, $controller, $module = null, array $params = array())
     {
         $this->resetObjects();
         if (null === $module) {
             $module = $this->defaultModule;
         }
 
         // clone the view object to prevent over-writing of view variables
         $viewRendererObj = Zend_Controller_Action_HelperBroker::getStaticHelper('viewRenderer');
         Zend_Controller_Action_HelperBroker::addHelper(clone $viewRendererObj);
 
         $this->request->setParams($params)
                       ->setModuleName($module)
                       ->setControllerName($controller)
                       ->setActionName($action)
                       ->setDispatched(true);
 
         $this->dispatcher->dispatch($this->request, $this->response);
 
         // reset the viewRenderer object to it's original state
         Zend_Controller_Action_HelperBroker::addHelper($viewRendererObj);
 
 
         if (!$this->request->isDispatched()
             || $this->response->isRedirect())
         {
             // forwards and redirects render nothing
             return '';
         }
 
         $return = $this->response->getBody();
         $this->resetObjects();
         return $return;
     }
 
     /**
      * Clone the current View
      *
      * @return Zend_View_Interface
      */
     public function cloneView()
     {
         $view = clone $this->view;
         $view->clearVars();
         return $view;
     }
 }