BlockViewBuilder::buildPreRenderableBlock

protected static BlockViewBuilder::buildPreRenderableBlock($entity, ModuleHandlerInterface $module_handler)

protected static function buildPreRenderableBlock($entity, ModuleHandlerInterface $module_handler) {
  $plugin = $entity->getPlugin();
  $plugin_id = $plugin->getPluginId();
  $base_id = $plugin->getBaseId();
  $derivative_id = $plugin->getDerivativeId();
  $configuration = $plugin->getConfiguration();

  // Inject runtime contexts.
  if ($plugin instanceof ContextAwarePluginInterface) {
    $contexts = \Drupal::service('context.repository')->getRuntimeContexts($plugin->getContextMapping());
    \Drupal::service('context.handler')->applyContextMapping($plugin, $contexts);
  }

  // Create the render array for the block as a whole.
  // @see template_preprocess_block().
  $build = [
    '#theme' => 'block',
    '#attributes' => [],
    // All blocks get a "Configure block" contextual link.
    '#contextual_links' => [
      'block' => [
        'route_parameters' => ['block' => $entity->id()],
      ],
    ],
    '#weight' => $entity->getWeight(),
    '#configuration' => $configuration,
    '#plugin_id' => $plugin_id,
    '#base_plugin_id' => $base_id,
    '#derivative_plugin_id' => $derivative_id,
    '#id' => $entity->id(),
    '#pre_render' => [
      static::class . '::preRender',
    ],
    // Add the entity so that it can be used in the #pre_render method.
    '#block' => $entity,
  ];

  // If an alter hook wants to modify the block contents, it can append
  // another #pre_render hook.
  $module_handler->alter(['block_view', "block_view_$base_id"], $build, $plugin);

  return $build;
}