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   1  <?php
   2  
   3  /*
   4   * This file is part of the symfony package.
   5   * (c) 2004-2006 Fabien Potencier <fabien.potencier@symfony-project.com>
   6   * 
   7   * For the full copyright and license information, please view the LICENSE
   8   * file that was distributed with this source code.
   9   */
  10  
  11  /**
  12   *
  13   * @package    symfony
  14   * @subpackage filter
  15   * @author     Fabien Potencier <fabien.potencier@symfony-project.com>
  16   * @version    SVN: $Id: sfWebDebugFilter.class.php 3244 2007-01-12 14:46:11Z fabien $
  17   */
  18  class sfWebDebugFilter extends sfFilter
  19  {
  20    /**
  21     * Executes this filter.
  22     *
  23     * @param sfFilterChain A sfFilterChain instance
  24     */
  25    public function execute($filterChain)
  26    {
  27      // execute this filter only once
  28      if ($this->isFirstCall())
  29      {
  30        // register sfWebDebug assets
  31        sfWebDebug::getInstance()->registerAssets();
  32      }
  33  
  34      // execute next filter
  35      $filterChain->execute();
  36  
  37      $context    = $this->getContext();
  38      $response   = $context->getResponse();
  39      $controller = $context->getController();
  40  
  41      // don't add debug toolbar:
  42      // * for XHR requests
  43      // * if 304
  44      // * if not rendering to the client
  45      // * if HTTP headers only
  46      if (
  47        $this->getContext()->getRequest()->isXmlHttpRequest() ||
  48        strpos($response->getContentType(), 'html') === false ||
  49        $response->getStatusCode() == 304 ||
  50        $controller->getRenderMode() != sfView::RENDER_CLIENT ||
  51        $response->isHeaderOnly()
  52      )
  53      {
  54        return;
  55      }
  56  
  57      $content  = $response->getContent();
  58      $webDebug = sfWebDebug::getInstance()->getResults();
  59  
  60      // add web debug information to response content
  61      $newContent = str_ireplace('</body>', $webDebug.'</body>', $content);
  62      if ($content == $newContent)
  63      {
  64        $newContent .= $webDebug;
  65      }
  66  
  67      $response->setContent($newContent);
  68    }
  69  }