annotate core/modules/block_place/src/EventSubscriber/BlockPlaceEventSubscriber.php @ 19:fa3358dc1485 tip

Add ndrum files
author Chris Cannam
date Wed, 28 Aug 2019 13:14:47 +0100
parents 4c8ae668cc8c
children
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Chris@0 1 <?php
Chris@0 2
Chris@0 3 namespace Drupal\block_place\EventSubscriber;
Chris@0 4
Chris@0 5 use Drupal\Core\Render\PageDisplayVariantSelectionEvent;
Chris@0 6 use Drupal\Core\Render\RenderEvents;
Chris@0 7 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
Chris@0 8 use Symfony\Component\HttpFoundation\RequestStack;
Chris@0 9 use Drupal\Core\Session\AccountInterface;
Chris@0 10
Chris@0 11 /**
Chris@0 12 * @see \Drupal\block_place\Plugin\DisplayVariant\PlaceBlockPageVariant
Chris@0 13 */
Chris@0 14 class BlockPlaceEventSubscriber implements EventSubscriberInterface {
Chris@0 15
Chris@0 16 /**
Chris@0 17 * The request stack.
Chris@0 18 *
Chris@0 19 * @var \Symfony\Component\HttpFoundation\RequestStack
Chris@0 20 */
Chris@0 21 protected $requestStack;
Chris@0 22
Chris@0 23 /**
Chris@0 24 * The current user.
Chris@0 25 *
Chris@0 26 * @var \Drupal\Core\Session\AccountInterface
Chris@0 27 */
Chris@0 28 protected $account;
Chris@0 29
Chris@0 30 /**
Chris@0 31 * Constructs a \Drupal\block_place\EventSubscriber\BlockPlaceEventSubscriber object.
Chris@0 32 *
Chris@0 33 * @param \Symfony\Component\HttpFoundation\RequestStack $request_stack
Chris@0 34 * The request stack used to retrieve the current request.
Chris@0 35 * @param \Drupal\Core\Session\AccountInterface $account
Chris@0 36 * The current user.
Chris@0 37 */
Chris@0 38 public function __construct(RequestStack $request_stack, AccountInterface $account) {
Chris@0 39 $this->requestStack = $request_stack;
Chris@0 40 $this->account = $account;
Chris@0 41 }
Chris@0 42
Chris@0 43 /**
Chris@0 44 * Selects the block place override of the block page display variant.
Chris@0 45 *
Chris@0 46 * @param \Drupal\Core\Render\PageDisplayVariantSelectionEvent $event
Chris@0 47 * The event to process.
Chris@0 48 */
Chris@0 49 public function onBlockPageDisplayVariantSelected(PageDisplayVariantSelectionEvent $event) {
Chris@0 50 if ($event->getPluginId() === 'block_page') {
Chris@0 51 if ($this->requestStack->getCurrentRequest()->query->has('block-place') && $this->account->hasPermission('administer blocks')) {
Chris@0 52 $event->setPluginId('block_place_page');
Chris@0 53 }
Chris@0 54 $event->addCacheContexts(['user.permissions', 'url.query_args']);
Chris@0 55 }
Chris@0 56 }
Chris@0 57
Chris@0 58 /**
Chris@0 59 * {@inheritdoc}
Chris@0 60 */
Chris@0 61 public static function getSubscribedEvents() {
Chris@0 62 // Set a very low priority, so that it runs last.
Chris@0 63 $events[RenderEvents::SELECT_PAGE_DISPLAY_VARIANT][] = ['onBlockPageDisplayVariantSelected', -1000];
Chris@0 64 return $events;
Chris@0 65 }
Chris@0 66
Chris@0 67 }