diff core/modules/layout_builder/src/EventSubscriber/BlockComponentRenderArray.php @ 14:1fec387a4317

Update Drupal core to 8.5.2 via Composer

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/layout_builder/src/EventSubscriber/BlockComponentRenderArray.php	Mon Apr 23 09:46:53 2018 +0100
@@ -0,0 +1,85 @@
+<?php
+
+namespace Drupal\layout_builder\EventSubscriber;
+
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Block\BlockPluginInterface;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\layout_builder\Event\SectionComponentBuildRenderArrayEvent;
+use Drupal\layout_builder\LayoutBuilderEvents;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+/**
+ * Builds render arrays and handles access for all block components.
+ *
+ * @internal
+ *   Layout Builder is currently experimental and should only be leveraged by
+ *   experimental modules and development releases of contributed modules.
+ *   See https://www.drupal.org/core/experimental for more information.
+ */
+class BlockComponentRenderArray implements EventSubscriberInterface {
+
+  /**
+   * The current user.
+   *
+   * @var \Drupal\Core\Session\AccountInterface
+   */
+  protected $currentUser;
+
+  /**
+   * Creates a BlockComponentRenderArray object.
+   *
+   * @param \Drupal\Core\Session\AccountInterface $current_user
+   *   The current user.
+   */
+  public function __construct(AccountInterface $current_user) {
+    $this->currentUser = $current_user;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents() {
+    $events[LayoutBuilderEvents::SECTION_COMPONENT_BUILD_RENDER_ARRAY] = ['onBuildRender', 100];
+    return $events;
+  }
+
+  /**
+   * Builds render arrays for block plugins and sets it on the event.
+   *
+   * @param \Drupal\layout_builder\Event\SectionComponentBuildRenderArrayEvent $event
+   *   The section component render event.
+   */
+  public function onBuildRender(SectionComponentBuildRenderArrayEvent $event) {
+    $block = $event->getPlugin();
+    if (!$block instanceof BlockPluginInterface) {
+      return;
+    }
+
+    // Only check access if the component is not being previewed.
+    if ($event->inPreview()) {
+      $access = AccessResult::allowed()->setCacheMaxAge(0);
+    }
+    else {
+      $access = $block->access($this->currentUser, TRUE);
+    }
+
+    $event->addCacheableDependency($access);
+    if ($access->isAllowed()) {
+      $event->addCacheableDependency($block);
+
+      $build = [
+        // @todo Move this to BlockBase in https://www.drupal.org/node/2931040.
+        '#theme' => 'block',
+        '#configuration' => $block->getConfiguration(),
+        '#plugin_id' => $block->getPluginId(),
+        '#base_plugin_id' => $block->getBaseId(),
+        '#derivative_plugin_id' => $block->getDerivativeId(),
+        '#weight' => $event->getComponent()->getWeight(),
+        'content' => $block->build(),
+      ];
+      $event->setBuild($build);
+    }
+  }
+
+}