Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\block;
Chris@0: 
Chris@0: use Drupal\Core\Cache\CacheableMetadata;
Chris@18: use Drupal\Core\Entity\EntityTypeManagerInterface;
Chris@0: use Drupal\Core\Plugin\Context\ContextHandlerInterface;
Chris@0: use Drupal\Core\Theme\ThemeManagerInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Provides a repository for Block config entities.
Chris@0:  */
Chris@0: class BlockRepository implements BlockRepositoryInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * The block storage.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Entity\EntityStorageInterface
Chris@0:    */
Chris@0:   protected $blockStorage;
Chris@0: 
Chris@0:   /**
Chris@0:    * The theme manager.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Theme\ThemeManagerInterface
Chris@0:    */
Chris@0:   protected $themeManager;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a new BlockRepository.
Chris@0:    *
Chris@18:    * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
Chris@18:    *   The entity type manager service.
Chris@0:    * @param \Drupal\Core\Theme\ThemeManagerInterface $theme_manager
Chris@0:    *   The theme manager.
Chris@0:    * @param \Drupal\Core\Plugin\Context\ContextHandlerInterface $context_handler
Chris@0:    *   The plugin context handler.
Chris@0:    */
Chris@18:   public function __construct(EntityTypeManagerInterface $entity_type_manager, ThemeManagerInterface $theme_manager, ContextHandlerInterface $context_handler) {
Chris@18:     $this->blockStorage = $entity_type_manager->getStorage('block');
Chris@0:     $this->themeManager = $theme_manager;
Chris@0:     $this->contextHandler = $context_handler;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getVisibleBlocksPerRegion(array &$cacheable_metadata = []) {
Chris@0:     $active_theme = $this->themeManager->getActiveTheme();
Chris@0:     // Build an array of the region names in the right order.
Chris@0:     $empty = array_fill_keys($active_theme->getRegions(), []);
Chris@0: 
Chris@0:     $full = [];
Chris@0:     foreach ($this->blockStorage->loadByProperties(['theme' => $active_theme->getName()]) as $block_id => $block) {
Chris@0:       /** @var \Drupal\block\BlockInterface $block */
Chris@0:       $access = $block->access('view', NULL, TRUE);
Chris@0:       $region = $block->getRegion();
Chris@0:       if (!isset($cacheable_metadata[$region])) {
Chris@0:         $cacheable_metadata[$region] = CacheableMetadata::createFromObject($access);
Chris@0:       }
Chris@0:       else {
Chris@0:         $cacheable_metadata[$region] = $cacheable_metadata[$region]->merge(CacheableMetadata::createFromObject($access));
Chris@0:       }
Chris@0: 
Chris@0:       // Set the contexts on the block before checking access.
Chris@0:       if ($access->isAllowed()) {
Chris@0:         $full[$region][$block_id] = $block;
Chris@0:       }
Chris@0:     }
Chris@0: 
Chris@0:     // Merge it with the actual values to maintain the region ordering.
Chris@0:     $assignments = array_intersect_key(array_merge($empty, $full), $empty);
Chris@0:     foreach ($assignments as &$assignment) {
Chris@0:       // Suppress errors because PHPUnit will indirectly modify the contents,
Chris@0:       // triggering https://bugs.php.net/bug.php?id=50688.
Chris@0:       @uasort($assignment, 'Drupal\block\Entity\Block::sort');
Chris@0:     }
Chris@0:     return $assignments;
Chris@0:   }
Chris@0: 
Chris@0: }