diff core/modules/layout_builder/src/InlineBlockEntityOperations.php @ 17:129ea1e6d783

Update, including to Drupal core 8.6.10

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/layout_builder/src/InlineBlockEntityOperations.php	Thu Feb 28 13:21:36 2019 +0000
@@ -0,0 +1,267 @@
+<?php
+
+namespace Drupal\layout_builder;
+
+use Drupal\Core\Database\Connection;
+use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
+use Drupal\Core\Entity\EntityInterface;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Entity\RevisionableInterface;
+use Drupal\layout_builder\Plugin\Block\InlineBlock;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Defines a class for reacting to entity events related to Inline Blocks.
+ *
+ * @internal
+ */
+class InlineBlockEntityOperations implements ContainerInjectionInterface {
+
+  use LayoutEntityHelperTrait;
+
+  /**
+   * Inline block usage tracking service.
+   *
+   * @var \Drupal\layout_builder\InlineBlockUsage
+   */
+  protected $usage;
+
+  /**
+   * The block content storage.
+   *
+   * @var \Drupal\Core\Entity\EntityStorageInterface
+   */
+  protected $blockContentStorage;
+
+  /**
+   * The entity type manager.
+   *
+   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+   */
+  protected $entityTypeManager;
+
+  /**
+   * Constructs a new EntityOperations object.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entityTypeManager
+   *   The entity type manager service.
+   * @param \Drupal\layout_builder\InlineBlockUsage $usage
+   *   Inline block usage tracking service.
+   * @param \Drupal\Core\Database\Connection $database
+   *   The database connection.
+   */
+  public function __construct(EntityTypeManagerInterface $entityTypeManager, InlineBlockUsage $usage, Connection $database) {
+    $this->entityTypeManager = $entityTypeManager;
+    $this->blockContentStorage = $entityTypeManager->getStorage('block_content');
+    $this->usage = $usage;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('entity_type.manager'),
+      $container->get('inline_block.usage'),
+      $container->get('database')
+    );
+  }
+
+  /**
+   * Remove all unused inline blocks on save.
+   *
+   * Entities that were used in prevision revisions will be removed if not
+   * saving a new revision.
+   *
+   * @param \Drupal\Core\Entity\EntityInterface $entity
+   *   The parent entity.
+   */
+  protected function removeUnusedForEntityOnSave(EntityInterface $entity) {
+    // If the entity is new or '$entity->original' is not set then there will
+    // not be any unused inline blocks to remove.
+    // If this is a revisionable entity then do not remove inline blocks. They
+    // could be referenced in previous revisions even if this is not a new
+    // revision.
+    if ($entity->isNew() || !isset($entity->original) || $entity instanceof RevisionableInterface) {
+      return;
+    }
+    $sections = $this->getEntitySections($entity);
+    // If this is a layout override and there are no sections then it is a new
+    // override.
+    if ($this->isEntityUsingFieldOverride($entity) && empty($sections)) {
+      return;
+    }
+
+    // Delete and remove the usage for inline blocks that were removed.
+    if ($removed_block_ids = $this->getRemovedBlockIds($entity)) {
+      $this->deleteBlocksAndUsage($removed_block_ids);
+    }
+  }
+
+  /**
+   * Gets the IDs of the inline blocks that were removed.
+   *
+   * @param \Drupal\Core\Entity\EntityInterface $entity
+   *   The layout entity.
+   *
+   * @return int[]
+   *   The block content IDs that were removed.
+   */
+  protected function getRemovedBlockIds(EntityInterface $entity) {
+    $original_sections = $this->getEntitySections($entity->original);
+    $current_sections = $this->getEntitySections($entity);
+    // Avoid un-needed conversion from revision IDs to block content IDs by
+    // first determining if there are any revisions in the original that are not
+    // also in the current sections.
+    $current_block_content_revision_ids = $this->getInlineBlockRevisionIdsInSections($current_sections);
+    $original_block_content_revision_ids = $this->getInlineBlockRevisionIdsInSections($original_sections);
+    if ($unused_original_revision_ids = array_diff($original_block_content_revision_ids, $current_block_content_revision_ids)) {
+      // If there are any revisions in the original that aren't in the current
+      // there may some blocks that need to be removed.
+      $current_block_content_ids = $this->getBlockIdsForRevisionIds($current_block_content_revision_ids);
+      $unused_original_block_content_ids = $this->getBlockIdsForRevisionIds($unused_original_revision_ids);
+      return array_diff($unused_original_block_content_ids, $current_block_content_ids);
+    }
+    return [];
+  }
+
+  /**
+   * Handles entity tracking on deleting a parent entity.
+   *
+   * @param \Drupal\Core\Entity\EntityInterface $entity
+   *   The parent entity.
+   */
+  public function handleEntityDelete(EntityInterface $entity) {
+    if ($this->isLayoutCompatibleEntity($entity)) {
+      $this->usage->removeByLayoutEntity($entity);
+    }
+  }
+
+  /**
+   * Handles saving a parent entity.
+   *
+   * @param \Drupal\Core\Entity\EntityInterface $entity
+   *   The parent entity.
+   */
+  public function handlePreSave(EntityInterface $entity) {
+    if (!$this->isLayoutCompatibleEntity($entity)) {
+      return;
+    }
+    $duplicate_blocks = FALSE;
+
+    if ($sections = $this->getEntitySections($entity)) {
+      if ($this->isEntityUsingFieldOverride($entity)) {
+        if (!$entity->isNew() && isset($entity->original)) {
+          if (empty($this->getEntitySections($entity->original))) {
+            // If there were no sections in the original entity then this is a
+            // new override from a default and the blocks need to be duplicated.
+            $duplicate_blocks = TRUE;
+          }
+        }
+      }
+      $new_revision = FALSE;
+      if ($entity instanceof RevisionableInterface) {
+        // If the parent entity will have a new revision create a new revision
+        // of the block.
+        // @todo Currently revisions are never created for the parent entity.
+        //   This will be fixed in https://www.drupal.org/node/2937199.
+        //   To work around this always make a revision when the parent entity
+        //   is an instance of RevisionableInterface. After the issue is fixed
+        //   only create a new revision if '$entity->isNewRevision()'.
+        $new_revision = TRUE;
+      }
+
+      foreach ($this->getInlineBlockComponents($sections) as $component) {
+        $this->saveInlineBlockComponent($entity, $component, $new_revision, $duplicate_blocks);
+      }
+    }
+    $this->removeUnusedForEntityOnSave($entity);
+  }
+
+  /**
+   * Gets a block ID for an inline block plugin.
+   *
+   * @param \Drupal\layout_builder\Plugin\Block\InlineBlock $block_plugin
+   *   The inline block plugin.
+   *
+   * @return int
+   *   The block content ID or null none available.
+   */
+  protected function getPluginBlockId(InlineBlock $block_plugin) {
+    $configuration = $block_plugin->getConfiguration();
+    if (!empty($configuration['block_revision_id'])) {
+      $revision_ids = $this->getBlockIdsForRevisionIds([$configuration['block_revision_id']]);
+      return array_pop($revision_ids);
+    }
+    return NULL;
+  }
+
+  /**
+   * Delete the inline blocks and the usage records.
+   *
+   * @param int[] $block_content_ids
+   *   The block content entity IDs.
+   */
+  protected function deleteBlocksAndUsage(array $block_content_ids) {
+    foreach ($block_content_ids as $block_content_id) {
+      if ($block = $this->blockContentStorage->load($block_content_id)) {
+        $block->delete();
+      }
+    }
+    $this->usage->deleteUsage($block_content_ids);
+  }
+
+  /**
+   * Removes unused inline blocks.
+   *
+   * @param int $limit
+   *   The maximum number of inline blocks to remove.
+   */
+  public function removeUnused($limit = 100) {
+    $this->deleteBlocksAndUsage($this->usage->getUnused($limit));
+  }
+
+  /**
+   * Gets blocks IDs for an array of revision IDs.
+   *
+   * @param int[] $revision_ids
+   *   The revision IDs.
+   *
+   * @return int[]
+   *   The block IDs.
+   */
+  protected function getBlockIdsForRevisionIds(array $revision_ids) {
+    if ($revision_ids) {
+      $query = $this->blockContentStorage->getQuery();
+      $query->condition('revision_id', $revision_ids, 'IN');
+      $block_ids = $query->execute();
+      return $block_ids;
+    }
+    return [];
+  }
+
+  /**
+   * Saves an inline block component.
+   *
+   * @param \Drupal\Core\Entity\EntityInterface $entity
+   *   The entity with the layout.
+   * @param \Drupal\layout_builder\SectionComponent $component
+   *   The section component with an inline block.
+   * @param bool $new_revision
+   *   Whether a new revision of the block should be created.
+   * @param bool $duplicate_blocks
+   *   Whether the blocks should be duplicated.
+   */
+  protected function saveInlineBlockComponent(EntityInterface $entity, SectionComponent $component, $new_revision, $duplicate_blocks) {
+    /** @var \Drupal\layout_builder\Plugin\Block\InlineBlock $plugin */
+    $plugin = $component->getPlugin();
+    $pre_save_configuration = $plugin->getConfiguration();
+    $plugin->saveBlockContent($new_revision, $duplicate_blocks);
+    $post_save_configuration = $plugin->getConfiguration();
+    if ($duplicate_blocks || (empty($pre_save_configuration['block_revision_id']) && !empty($post_save_configuration['block_revision_id']))) {
+      $this->usage->addUsage($this->getPluginBlockId($plugin), $entity);
+    }
+    $component->setConfiguration($post_save_configuration);
+  }
+
+}