Issue #3002175: Custom blocks created in inline forms should not be reusable

Closes #3002175

src/EventSubscriber/SetInlineBlockDependencyNested.php

+<?php
+
+namespace Drupal\inline_entity_form\EventSubscriber;
+
+use Drupal\block_content\BlockContentEvents;
+use Drupal\block_content\BlockContentInterface;
+use Drupal\block_content\Event\BlockContentGetDependencyEvent;
+use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\node\ContextProvider\NodeRouteContext;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+/**
+ * Override Layout Builder SetInlineBlockDependencyWithContextTranslation.
+ *
+ * Handles handle nested blocks.
+ *
+ * This is copied from the version in layout_builder_at, except for skipping
+ * the test isBlockRevisionUsedInEntity().
+ */
+class SetInlineBlockDependencyNested implements EventSubscriberInterface {
+
+  /**
+   * The currently active route match object.
+   *
+   * @var \Drupal\Core\Routing\RouteMatchInterface
+   */
+  protected RouteMatchInterface $routeMatch;
+
+  /**
+   * The node route context service.
+   *
+   * @var \Drupal\node\ContextProvider\NodeRouteContext
+   */
+  protected NodeRouteContext $nodeRouteContext;
+
+  /**
+   * Constructs event subscriber.
+   *
+   * @param \Drupal\Core\Routing\RouteMatchInterface $route_match
+   *   The currently active route match object.
+   * @param \Drupal\node\ContextProvider\NodeRouteContext $node_route_context
+   *   The node route context service.
+   */
+  public function __construct(RouteMatchInterface $route_match, NodeRouteContext $node_route_context) {
+    $this->routeMatch = $route_match;
+    $this->nodeRouteContext = $node_route_context;
+  }
+
+  /**
+   * Handles the BlockContentEvents::INLINE_BLOCK_GET_DEPENDENCY event.
+   *
+   * @param \Drupal\block_content\Event\BlockContentGetDependencyEvent $event
+   *   The event.
+   *
+   * @throws \Drupal\Component\Plugin\Exception\ContextException
+   */
+  public function onGetDependency(BlockContentGetDependencyEvent $event) {
+    if ($dependency = $this->getInlineBlockDependency($event->getBlockContentEntity())) {
+      $event->setAccessDependency($dependency);
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getSubscribedEvents() {
+    return [
+      BlockContentEvents::BLOCK_CONTENT_GET_DEPENDENCY => [
+        'onGetDependency',
+        -100,
+      ],
+    ];
+  }
+
+  /**
+   * Get the access dependency of an inline block.
+   *
+   * @param \Drupal\block_content\BlockContentInterface $block_content
+   *   The block content entity.
+   *
+   * @return \Drupal\Core\Entity\EntityInterface|null
+   *   Returns the entity dependency.
+   *
+   * @throws \Drupal\Component\Plugin\Exception\ContextException
+   */
+  protected function getInlineBlockDependency(BlockContentInterface $block_content) {
+    // @todo Find a better way to get child blocks dependencies.
+    // Try to extract the node route context.
+    $contexts = $this->nodeRouteContext->getRuntimeContexts([]);
+    /** @var \Drupal\Core\Plugin\Context\Context $nodeContext */
+    $nodeContext = $contexts['node'];
+    $entity = $nodeContext->getContextValue();
+
+    // If we couldn't retrieve the node from the route then we try to get the
+    // section storage.
+    if (!$entity) {
+      $entity = $this->routeMatch->getParameter('section_storage');
+    }
+
+    return $entity;
+  }
+
+}