Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\image\Controller;
Chris@0: 
Chris@0: use Drupal\Core\Cache\CacheableJsonResponse;
Chris@0: use Drupal\Core\Controller\ControllerBase;
Chris@0: use Drupal\Core\Entity\ContentEntityInterface;
Chris@0: use Drupal\Core\Entity\EntityInterface;
Chris@0: use Drupal\Core\Image\ImageFactory;
Chris@0: use Drupal\Core\Render\Element\StatusMessages;
Chris@0: use Drupal\Core\Render\RendererInterface;
Chris@0: use Drupal\image\Plugin\Field\FieldType\ImageItem;
Chris@0: use Drupal\user\PrivateTempStoreFactory;
Chris@0: use Symfony\Component\DependencyInjection\ContainerInterface;
Chris@0: use Symfony\Component\HttpFoundation\JsonResponse;
Chris@0: use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
Chris@0: 
Chris@0: /**
Chris@0:  * Returns responses for our image routes.
Chris@0:  */
Chris@0: class QuickEditImageController extends ControllerBase {
Chris@0: 
Chris@0:   /**
Chris@0:    * Stores The Quick Edit tempstore.
Chris@0:    *
Chris@0:    * @var \Drupal\user\PrivateTempStore
Chris@0:    */
Chris@0:   protected $tempStore;
Chris@0: 
Chris@0:   /**
Chris@0:    * The renderer.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Render\RendererInterface
Chris@0:    */
Chris@0:   protected $renderer;
Chris@0: 
Chris@0:   /**
Chris@0:    * The image factory.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Image\ImageFactory
Chris@0:    */
Chris@0:   protected $imageFactory;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a new QuickEditImageController.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Render\RendererInterface $renderer
Chris@0:    *   The renderer.
Chris@0:    * @param \Drupal\Core\Image\ImageFactory $image_factory
Chris@0:    *   The image factory.
Chris@0:    * @param \Drupal\user\PrivateTempStoreFactory $temp_store_factory
Chris@0:    *   The tempstore factory.
Chris@0:    */
Chris@0:   public function __construct(RendererInterface $renderer, ImageFactory $image_factory, PrivateTempStoreFactory $temp_store_factory) {
Chris@0:     $this->renderer = $renderer;
Chris@0:     $this->imageFactory = $image_factory;
Chris@0:     $this->tempStore = $temp_store_factory->get('quickedit');
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public static function create(ContainerInterface $container) {
Chris@0:     return new static(
Chris@0:       $container->get('renderer'),
Chris@0:       $container->get('image.factory'),
Chris@0:       $container->get('user.private_tempstore')
Chris@0:     );
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Returns JSON representing the new file upload, or validation errors.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Entity\EntityInterface $entity
Chris@0:    *   The entity of which an image field is being rendered.
Chris@0:    * @param string $field_name
Chris@0:    *   The name of the (image) field that is being rendered
Chris@0:    * @param string $langcode
Chris@0:    *   The language code of the field that is being rendered.
Chris@0:    * @param string $view_mode_id
Chris@0:    *   The view mode of the field that is being rendered.
Chris@0:    *
Chris@0:    * @return \Symfony\Component\HttpFoundation\JsonResponse
Chris@0:    *   The JSON response.
Chris@0:    */
Chris@0:   public function upload(EntityInterface $entity, $field_name, $langcode, $view_mode_id) {
Chris@0:     $field = $this->getField($entity, $field_name, $langcode);
Chris@0:     $field_validators = $field->getUploadValidators();
Chris@0:     $field_settings = $field->getFieldDefinition()->getSettings();
Chris@0:     $destination = $field->getUploadLocation();
Chris@0: 
Chris@0:     // Add upload resolution validation.
Chris@0:     if ($field_settings['max_resolution'] || $field_settings['min_resolution']) {
Chris@0:       $field_validators['file_validate_image_resolution'] = [$field_settings['max_resolution'], $field_settings['min_resolution']];
Chris@0:     }
Chris@0: 
Chris@0:     // Create the destination directory if it does not already exist.
Chris@0:     if (isset($destination) && !file_prepare_directory($destination, FILE_CREATE_DIRECTORY)) {
Chris@0:       return new JsonResponse(['main_error' => $this->t('The destination directory could not be created.'), 'errors' => '']);
Chris@0:     }
Chris@0: 
Chris@0:     // Attempt to save the image given the field's constraints.
Chris@0:     $result = file_save_upload('image', $field_validators, $destination);
Chris@0:     if (is_array($result) && $result[0]) {
Chris@0:       /** @var \Drupal\file\Entity\File $file */
Chris@0:       $file = $result[0];
Chris@0:       $image = $this->imageFactory->get($file->getFileUri());
Chris@0: 
Chris@0:       // Set the value in the Entity to the new file.
Chris@0:       /** @var \Drupal\file\Plugin\Field\FieldType\FileFieldItemList $field_list */
Chris@0:       $value = $entity->$field_name->getValue();
Chris@0:       $value[0]['target_id'] = $file->id();
Chris@0:       $value[0]['width'] = $image->getWidth();
Chris@0:       $value[0]['height'] = $image->getHeight();
Chris@0:       $entity->$field_name->setValue($value);
Chris@0: 
Chris@0:       // Render the new image using the correct formatter settings.
Chris@0:       $entity_view_mode_ids = array_keys($this->entityManager()->getViewModes($entity->getEntityTypeId()));
Chris@0:       if (in_array($view_mode_id, $entity_view_mode_ids, TRUE)) {
Chris@0:         $output = $entity->$field_name->view($view_mode_id);
Chris@0:       }
Chris@0:       else {
Chris@0:         // Each part of a custom (non-Entity Display) view mode ID is separated
Chris@0:         // by a dash; the first part must be the module name.
Chris@0:         $mode_id_parts = explode('-', $view_mode_id, 2);
Chris@0:         $module = reset($mode_id_parts);
Chris@0:         $args = [$entity, $field_name, $view_mode_id, $langcode];
Chris@0:         $output = $this->moduleHandler()->invoke($module, 'quickedit_render_field', $args);
Chris@0:       }
Chris@0: 
Chris@0:       // Save the Entity to tempstore.
Chris@0:       $this->tempStore->set($entity->uuid(), $entity);
Chris@0: 
Chris@0:       $data = [
Chris@0:         'fid' => $file->id(),
Chris@0:         'html' => $this->renderer->renderRoot($output),
Chris@0:       ];
Chris@0:       return new JsonResponse($data);
Chris@0:     }
Chris@0:     else {
Chris@0:       // Return a JSON object containing the errors from Drupal and our
Chris@0:       // "main_error", which is displayed inside the dropzone area.
Chris@0:       $messages = StatusMessages::renderMessages('error');
Chris@0:       return new JsonResponse(['errors' => $this->renderer->render($messages), 'main_error' => $this->t('The image failed validation.')]);
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Returns JSON representing an image field's metadata.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Entity\EntityInterface $entity
Chris@0:    *   The entity of which an image field is being rendered.
Chris@0:    * @param string $field_name
Chris@0:    *   The name of the (image) field that is being rendered
Chris@0:    * @param string $langcode
Chris@0:    *   The language code of the field that is being rendered.
Chris@0:    * @param string $view_mode_id
Chris@0:    *   The view mode of the field that is being rendered.
Chris@0:    *
Chris@0:    * @return \Drupal\Core\Cache\CacheableJsonResponse
Chris@0:    *   The JSON response.
Chris@0:    */
Chris@0:   public function getInfo(EntityInterface $entity, $field_name, $langcode, $view_mode_id) {
Chris@0:     $field = $this->getField($entity, $field_name, $langcode);
Chris@0:     $settings = $field->getFieldDefinition()->getSettings();
Chris@0:     $info = [
Chris@0:       'alt' => $field->alt,
Chris@0:       'title' => $field->title,
Chris@0:       'alt_field' => $settings['alt_field'],
Chris@0:       'title_field' => $settings['title_field'],
Chris@0:       'alt_field_required' => $settings['alt_field_required'],
Chris@0:       'title_field_required' => $settings['title_field_required'],
Chris@0:     ];
Chris@0:     $response = new CacheableJsonResponse($info);
Chris@0:     $response->addCacheableDependency($entity);
Chris@0:     return $response;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Returns JSON representing the current state of the field.
Chris@0:    *
Chris@0:    * @param \Drupal\Core\Entity\EntityInterface $entity
Chris@0:    *   The entity of which an image field is being rendered.
Chris@0:    * @param string $field_name
Chris@0:    *   The name of the (image) field that is being rendered
Chris@0:    * @param string $langcode
Chris@0:    *   The language code of the field that is being rendered.
Chris@0:    *
Chris@0:    * @return \Drupal\image\Plugin\Field\FieldType\ImageItem
Chris@0:    *   The field for this request.
Chris@0:    *
Chris@0:    * @throws \Symfony\Component\HttpKernel\Exception\BadRequestHttpException
Chris@0:    *   Throws an exception if the request is invalid.
Chris@0:    */
Chris@0:   protected function getField(EntityInterface $entity, $field_name, $langcode) {
Chris@0:     // Ensure that this is a valid Entity.
Chris@0:     if (!($entity instanceof ContentEntityInterface)) {
Chris@0:       throw new BadRequestHttpException('Requested Entity is not a Content Entity.');
Chris@0:     }
Chris@0: 
Chris@0:     // Check that this field exists.
Chris@0:     /** @var \Drupal\Core\Field\FieldItemListInterface $field_list */
Chris@0:     $field_list = $entity->getTranslation($langcode)->get($field_name);
Chris@0:     if (!$field_list) {
Chris@0:       throw new BadRequestHttpException('Requested Field does not exist.');
Chris@0:     }
Chris@0: 
Chris@0:     // If the list is empty, append an empty item to use.
Chris@0:     if ($field_list->isEmpty()) {
Chris@0:       $field = $field_list->appendItem();
Chris@0:     }
Chris@0:     // Otherwise, use the first item.
Chris@0:     else {
Chris@0:       $field = $entity->getTranslation($langcode)->get($field_name)->first();
Chris@0:     }
Chris@0: 
Chris@0:     // Ensure that the field is the type we expect.
Chris@0:     if (!($field instanceof ImageItem)) {
Chris@0:       throw new BadRequestHttpException('Requested Field is not of type "image".');
Chris@0:     }
Chris@0: 
Chris@0:     return $field;
Chris@0:   }
Chris@0: 
Chris@0: }