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   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <fabien@symfony.com>
   7   *
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  namespace Symfony\Component\HttpKernel\Event;
  13  
  14  use Symfony\Component\HttpFoundation\Request;
  15  use Symfony\Component\HttpKernel\HttpKernelInterface;
  16  
  17  /**
  18   * Allows filtering of a controller callable.
  19   *
  20   * You can call getController() to retrieve the current controller. With
  21   * setController() you can set a new controller that is used in the processing
  22   * of the request.
  23   *
  24   * Controllers should be callables.
  25   *
  26   * @author Bernhard Schussek <bschussek@gmail.com>
  27   */
  28  class FilterControllerEvent extends KernelEvent
  29  {
  30      private $controller;
  31  
  32      public function __construct(HttpKernelInterface $kernel, $controller, Request $request, $requestType)
  33      {
  34          parent::__construct($kernel, $request, $requestType);
  35  
  36          $this->setController($controller);
  37      }
  38  
  39      /**
  40       * Returns the current controller.
  41       *
  42       * @return callable
  43       */
  44      public function getController()
  45      {
  46          return $this->controller;
  47      }
  48  
  49      /**
  50       * Sets a new controller.
  51       *
  52       * @param callable $controller
  53       *
  54       * @throws \LogicException
  55       */
  56      public function setController($controller)
  57      {
  58          // controller must be a callable
  59          if (!\is_callable($controller)) {
  60              throw new \LogicException(sprintf('The controller must be a callable (%s given).', $this->varToString($controller)));
  61          }
  62  
  63          $this->controller = $controller;
  64      }
  65  
  66      private function varToString($var)
  67      {
  68          if (\is_object($var)) {
  69              return sprintf('Object(%s)', \get_class($var));
  70          }
  71  
  72          if (\is_array($var)) {
  73              $a = array();
  74              foreach ($var as $k => $v) {
  75                  $a[] = sprintf('%s => %s', $k, $this->varToString($v));
  76              }
  77  
  78              return sprintf('Array(%s)', implode(', ', $a));
  79          }
  80  
  81          if (\is_resource($var)) {
  82              return sprintf('Resource(%s)', get_resource_type($var));
  83          }
  84  
  85          if (null === $var) {
  86              return 'null';
  87          }
  88  
  89          if (false === $var) {
  90              return 'false';
  91          }
  92  
  93          if (true === $var) {
  94              return 'true';
  95          }
  96  
  97          return (string) $var;
  98      }
  99  }