Code Coverage |
||||||||||
Classes and Traits |
Functions and Methods |
Lines |
||||||||
Total | |
0.00% |
0 / 1 |
|
50.00% |
2 / 4 |
CRAP | |
64.71% |
11 / 17 |
AjaxResponseSubscriber | |
0.00% |
0 / 1 |
|
50.00% |
2 / 4 |
9.15 | |
64.71% |
11 / 17 |
__construct | |
100.00% |
1 / 1 |
1 | |
100.00% |
2 / 2 |
|||
onRequest | |
0.00% |
0 / 1 |
6 | |
0.00% |
0 / 3 |
|||
onResponse | |
100.00% |
1 / 1 |
3 | |
100.00% |
9 / 9 |
|||
getSubscribedEvents | |
0.00% |
0 / 1 |
2 | |
0.00% |
0 / 3 |
<?php | |
/** | |
* @file | |
* Contains \Drupal\Core\EventSubscriber\AjaxResponseSubscriber. | |
*/ | |
namespace Drupal\Core\EventSubscriber; | |
use Drupal\Component\Utility\Html; | |
use Drupal\Core\Ajax\AjaxResponse; | |
use Drupal\Core\Render\AttachmentsResponseProcessorInterface; | |
use Symfony\Component\EventDispatcher\EventSubscriberInterface; | |
use Symfony\Component\HttpKernel\Event\FilterResponseEvent; | |
use Symfony\Component\HttpKernel\Event\GetResponseEvent; | |
use Symfony\Component\HttpKernel\KernelEvents; | |
/** | |
* Response subscriber to handle AJAX responses. | |
*/ | |
class AjaxResponseSubscriber implements EventSubscriberInterface { | |
/** | |
* The AJAX response attachments processor service. | |
* | |
* @var \Drupal\Core\Render\AttachmentsResponseProcessorInterface | |
*/ | |
protected $ajaxResponseAttachmentsProcessor; | |
/** | |
* Constructs an AjaxResponseSubscriber object. | |
* | |
* @param \Drupal\Core\Render\AttachmentsResponseProcessorInterface $ajax_response_attachments_processor | |
* The AJAX response attachments processor service. | |
*/ | |
public function __construct(AttachmentsResponseProcessorInterface $ajax_response_attachments_processor) { | |
$this->ajaxResponseAttachmentsProcessor = $ajax_response_attachments_processor; | |
} | |
/** | |
* Request parameter to indicate that a request is a Drupal Ajax request. | |
*/ | |
const AJAX_REQUEST_PARAMETER = '_drupal_ajax'; | |
/** | |
* Sets the AJAX parameter from the current request. | |
* | |
* @param \Symfony\Component\HttpKernel\Event\GetResponseEvent $event | |
* The response event, which contains the current request. | |
*/ | |
public function onRequest(GetResponseEvent $event) { | |
// Pass to the Html class that the current request is an Ajax request. | |
if ($event->getRequest()->request->get(static::AJAX_REQUEST_PARAMETER)) { | |
Html::setIsAjax(TRUE); | |
} | |
} | |
/** | |
* Renders the ajax commands right before preparing the result. | |
* | |
* @param \Symfony\Component\HttpKernel\Event\FilterResponseEvent $event | |
* The response event, which contains the possible AjaxResponse object. | |
*/ | |
public function onResponse(FilterResponseEvent $event) { | |
$response = $event->getResponse(); | |
if ($response instanceof AjaxResponse) { | |
$this->ajaxResponseAttachmentsProcessor->processAttachments($response); | |
// IE 9 does not support XHR 2 (http://caniuse.com/#feat=xhr2), so | |
// for that browser, jquery.form submits requests containing a file upload | |
// via an IFRAME rather than via XHR. Since the response is being sent to | |
// an IFRAME, it must be formatted as HTML. Specifically: | |
// - It must use the text/html content type or else the browser will | |
// present a download prompt. Note: This applies to both file uploads | |
// as well as any ajax request in a form with a file upload form. | |
// - It must place the JSON data into a textarea to prevent browser | |
// extensions such as Linkification and Skype's Browser Highlighter | |
// from applying HTML transformations such as URL or phone number to | |
// link conversions on the data values. | |
// | |
// Since this affects the format of the output, it could be argued that | |
// this should be implemented as a separate Accept MIME type. However, | |
// that would require separate variants for each type of AJAX request | |
// (e.g., drupal-ajax, drupal-dialog, drupal-modal), so for expediency, | |
// this browser workaround is implemented via a GET or POST parameter. | |
// | |
// @see http://malsup.com/jquery/form/#file-upload | |
// @see https://www.drupal.org/node/1009382 | |
// @see https://www.drupal.org/node/2339491 | |
// @see Drupal.ajax.prototype.beforeSend() | |
$accept = $event->getRequest()->headers->get('accept'); | |
if (strpos($accept, 'text/html') !== FALSE) { | |
$response->headers->set('Content-Type', 'text/html; charset=utf-8'); | |
// Browser IFRAMEs expect HTML. Browser extensions, such as Linkification | |
// and Skype's Browser Highlighter, convert URLs, phone numbers, etc. | |
// into links. This corrupts the JSON response. Protect the integrity of | |
// the JSON data by making it the value of a textarea. | |
// @see http://malsup.com/jquery/form/#file-upload | |
// @see https://www.drupal.org/node/1009382 | |
$response->setContent('<textarea>' . $response->getContent() . '</textarea>'); | |
} | |
// User-uploaded files cannot set any response headers, so a custom header | |
// is used to indicate to ajax.js that this response is safe. Note that | |
// most Ajax requests bound using the Form API will be protected by having | |
// the URL flagged as trusted in Drupal.settings, so this header is used | |
// only for things like custom markup that gets Ajax behaviors attached. | |
$response->headers->set('X-Drupal-Ajax-Token', 1); | |
} | |
} | |
/** | |
* {@inheritdoc} | |
*/ | |
public static function getSubscribedEvents() { | |
$events[KernelEvents::RESPONSE][] = array('onResponse', -100); | |
$events[KernelEvents::REQUEST][] = array('onRequest', 50); | |
return $events; | |
} | |
} |