interface/modules/zend_modules/library/Zend/Mvc/View/Http/CreateViewModelListener.php

   1 <?php
   2 /**
   3  * Zend Framework (http://framework.zend.com/)
   4  *
   5  * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6  * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
   7  * @license   http://framework.zend.com/license/new-bsd New BSD License
   8  */
   9
  10 namespace Zend\Mvc\View\Http;
  11
  12 use Zend\EventManager\AbstractListenerAggregate;
  13 use Zend\EventManager\EventManagerInterface as Events;
  14 use Zend\Mvc\MvcEvent;
  15 use Zend\Stdlib\ArrayUtils;
  16 use Zend\View\Model\ViewModel;
  17
  18 class CreateViewModelListener extends AbstractListenerAggregate
  19 {
  20     /**
  21      * {@inheritDoc}
  22      */
  23     public function attach(Events $events)
  24     {
  25         $this->listeners[] = $events->attach('dispatch', array($this, 'createViewModelFromArray'),  -80);
  26         $this->listeners[] = $events->attach('dispatch', array($this, 'createViewModelFromNull'),   -80);
  27     }
  28
  29     /**
  30      * Inspect the result, and cast it to a ViewModel if an assoc array is detected
  31      *
  32      * @param  MvcEvent $e
  33      * @return void
  34      */
  35     public function createViewModelFromArray(MvcEvent $e)
  36     {
  37         $result = $e->getResult();
  38         if (!ArrayUtils::hasStringKeys($result, true)) {
  39             return;
  40         }
  41
  42         $model = new ViewModel($result);
  43         $e->setResult($model);
  44     }
  45
  46     /**
  47      * Inspect the result, and cast it to a ViewModel if null is detected
  48      *
  49      * @param MvcEvent $e
  50      * @return void
  51     */
  52     public function createViewModelFromNull(MvcEvent $e)
  53     {
  54         $result = $e->getResult();
  55         if (null !== $result) {
  56             return;
  57         }
  58
  59         $model = new ViewModel;
  60         $e->setResult($model);
  61     }
  62 }