Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\image\Entity;
Chris@0: 
Chris@0: use Drupal\Core\Cache\Cache;
Chris@0: use Drupal\Core\Config\Entity\ConfigEntityBase;
Chris@17: use Drupal\Core\Entity\Entity\EntityFormDisplay;
Chris@0: use Drupal\Core\Entity\EntityStorageInterface;
Chris@0: use Drupal\Core\Entity\EntityWithPluginCollectionInterface;
Chris@18: use Drupal\Core\File\Exception\FileException;
Chris@18: use Drupal\Core\File\FileSystemInterface;
Chris@0: use Drupal\Core\Routing\RequestHelper;
Chris@0: use Drupal\Core\Site\Settings;
Chris@0: use Drupal\Core\Url;
Chris@0: use Drupal\image\ImageEffectPluginCollection;
Chris@0: use Drupal\image\ImageEffectInterface;
Chris@0: use Drupal\image\ImageStyleInterface;
Chris@0: use Drupal\Component\Utility\Crypt;
Chris@0: use Drupal\Component\Utility\UrlHelper;
Chris@0: use Drupal\Core\StreamWrapper\StreamWrapperInterface;
Chris@0: use Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException;
Chris@0: use Drupal\Core\Entity\Entity\EntityViewDisplay;
Chris@0: 
Chris@0: /**
Chris@0:  * Defines an image style configuration entity.
Chris@0:  *
Chris@0:  * @ConfigEntityType(
Chris@0:  *   id = "image_style",
Chris@0:  *   label = @Translation("Image style"),
Chris@17:  *   label_collection = @Translation("Image styles"),
Chris@17:  *   label_singular = @Translation("image style"),
Chris@17:  *   label_plural = @Translation("image styles"),
Chris@17:  *   label_count = @PluralTranslation(
Chris@17:  *     singular = "@count image style",
Chris@17:  *     plural = "@count image styles",
Chris@17:  *   ),
Chris@0:  *   handlers = {
Chris@0:  *     "form" = {
Chris@0:  *       "add" = "Drupal\image\Form\ImageStyleAddForm",
Chris@0:  *       "edit" = "Drupal\image\Form\ImageStyleEditForm",
Chris@0:  *       "delete" = "Drupal\image\Form\ImageStyleDeleteForm",
Chris@0:  *       "flush" = "Drupal\image\Form\ImageStyleFlushForm"
Chris@0:  *     },
Chris@0:  *     "list_builder" = "Drupal\image\ImageStyleListBuilder",
Chris@0:  *     "storage" = "Drupal\image\ImageStyleStorage",
Chris@0:  *   },
Chris@0:  *   admin_permission = "administer image styles",
Chris@0:  *   config_prefix = "style",
Chris@0:  *   entity_keys = {
Chris@0:  *     "id" = "name",
Chris@0:  *     "label" = "label"
Chris@0:  *   },
Chris@0:  *   links = {
Chris@0:  *     "flush-form" = "/admin/config/media/image-styles/manage/{image_style}/flush",
Chris@0:  *     "edit-form" = "/admin/config/media/image-styles/manage/{image_style}",
Chris@0:  *     "delete-form" = "/admin/config/media/image-styles/manage/{image_style}/delete",
Chris@0:  *     "collection" = "/admin/config/media/image-styles",
Chris@0:  *   },
Chris@0:  *   config_export = {
Chris@0:  *     "name",
Chris@0:  *     "label",
Chris@0:  *     "effects",
Chris@0:  *   }
Chris@0:  * )
Chris@0:  */
Chris@0: class ImageStyle extends ConfigEntityBase implements ImageStyleInterface, EntityWithPluginCollectionInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * The name of the image style.
Chris@0:    *
Chris@0:    * @var string
Chris@0:    */
Chris@0:   protected $name;
Chris@0: 
Chris@0:   /**
Chris@0:    * The image style label.
Chris@0:    *
Chris@0:    * @var string
Chris@0:    */
Chris@0:   protected $label;
Chris@0: 
Chris@0:   /**
Chris@0:    * The array of image effects for this image style.
Chris@0:    *
Chris@0:    * @var array
Chris@0:    */
Chris@0:   protected $effects = [];
Chris@0: 
Chris@0:   /**
Chris@0:    * Holds the collection of image effects that are used by this image style.
Chris@0:    *
Chris@0:    * @var \Drupal\image\ImageEffectPluginCollection
Chris@0:    */
Chris@0:   protected $effectsCollection;
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function id() {
Chris@0:     return $this->name;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function postSave(EntityStorageInterface $storage, $update = TRUE) {
Chris@0:     parent::postSave($storage, $update);
Chris@0: 
Chris@0:     if ($update) {
Chris@0:       if (!empty($this->original) && $this->id() !== $this->original->id()) {
Chris@0:         // The old image style name needs flushing after a rename.
Chris@0:         $this->original->flush();
Chris@0:         // Update field settings if necessary.
Chris@0:         if (!$this->isSyncing()) {
Chris@0:           static::replaceImageStyle($this);
Chris@0:         }
Chris@0:       }
Chris@0:       else {
Chris@0:         // Flush image style when updating without changing the name.
Chris@0:         $this->flush();
Chris@0:       }
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public static function postDelete(EntityStorageInterface $storage, array $entities) {
Chris@0:     parent::postDelete($storage, $entities);
Chris@0: 
Chris@0:     /** @var \Drupal\image\ImageStyleInterface[] $entities */
Chris@0:     foreach ($entities as $style) {
Chris@0:       // Flush cached media for the deleted style.
Chris@0:       $style->flush();
Chris@0:       // Clear the replacement ID, if one has been previously stored.
Chris@0:       /** @var \Drupal\image\ImageStyleStorageInterface $storage */
Chris@0:       $storage->clearReplacementId($style->id());
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Update field settings if the image style name is changed.
Chris@0:    *
Chris@0:    * @param \Drupal\image\ImageStyleInterface $style
Chris@0:    *   The image style.
Chris@0:    */
Chris@0:   protected static function replaceImageStyle(ImageStyleInterface $style) {
Chris@0:     if ($style->id() != $style->getOriginalId()) {
Chris@0:       // Loop through all entity displays looking for formatters / widgets using
Chris@0:       // the image style.
Chris@0:       foreach (EntityViewDisplay::loadMultiple() as $display) {
Chris@0:         foreach ($display->getComponents() as $name => $options) {
Chris@0:           if (isset($options['type']) && $options['type'] == 'image' && $options['settings']['image_style'] == $style->getOriginalId()) {
Chris@0:             $options['settings']['image_style'] = $style->id();
Chris@0:             $display->setComponent($name, $options)
Chris@0:               ->save();
Chris@0:           }
Chris@0:         }
Chris@0:       }
Chris@17:       foreach (EntityFormDisplay::loadMultiple() as $display) {
Chris@0:         foreach ($display->getComponents() as $name => $options) {
Chris@0:           if (isset($options['type']) && $options['type'] == 'image_image' && $options['settings']['preview_image_style'] == $style->getOriginalId()) {
Chris@0:             $options['settings']['preview_image_style'] = $style->id();
Chris@0:             $display->setComponent($name, $options)
Chris@0:               ->save();
Chris@0:           }
Chris@0:         }
Chris@0:       }
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function buildUri($uri) {
Chris@0:     $source_scheme = $scheme = $this->fileUriScheme($uri);
Chris@0:     $default_scheme = $this->fileDefaultScheme();
Chris@0: 
Chris@0:     if ($source_scheme) {
Chris@0:       $path = $this->fileUriTarget($uri);
Chris@0:       // The scheme of derivative image files only needs to be computed for
Chris@0:       // source files not stored in the default scheme.
Chris@0:       if ($source_scheme != $default_scheme) {
Chris@0:         $class = $this->getStreamWrapperManager()->getClass($source_scheme);
Chris@0:         $is_writable = $class::getType() & StreamWrapperInterface::WRITE;
Chris@0: 
Chris@0:         // Compute the derivative URI scheme. Derivatives created from writable
Chris@0:         // source stream wrappers will inherit the scheme. Derivatives created
Chris@0:         // from read-only stream wrappers will fall-back to the default scheme.
Chris@0:         $scheme = $is_writable ? $source_scheme : $default_scheme;
Chris@0:       }
Chris@0:     }
Chris@0:     else {
Chris@0:       $path = $uri;
Chris@0:       $source_scheme = $scheme = $default_scheme;
Chris@0:     }
Chris@0:     return "$scheme://styles/{$this->id()}/$source_scheme/{$this->addExtension($path)}";
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function buildUrl($path, $clean_urls = NULL) {
Chris@0:     $uri = $this->buildUri($path);
Chris@0:     // The token query is added even if the
Chris@0:     // 'image.settings:allow_insecure_derivatives' configuration is TRUE, so
Chris@0:     // that the emitted links remain valid if it is changed back to the default
Chris@0:     // FALSE. However, sites which need to prevent the token query from being
Chris@0:     // emitted at all can additionally set the
Chris@0:     // 'image.settings:suppress_itok_output' configuration to TRUE to achieve
Chris@0:     // that (if both are set, the security token will neither be emitted in the
Chris@0:     // image derivative URL nor checked for in
Chris@0:     // \Drupal\image\ImageStyleInterface::deliver()).
Chris@0:     $token_query = [];
Chris@0:     if (!\Drupal::config('image.settings')->get('suppress_itok_output')) {
Chris@0:       // The passed $path variable can be either a relative path or a full URI.
Chris@0:       $original_uri = file_uri_scheme($path) ? file_stream_wrapper_uri_normalize($path) : file_build_uri($path);
Chris@0:       $token_query = [IMAGE_DERIVATIVE_TOKEN => $this->getPathToken($original_uri)];
Chris@0:     }
Chris@0: 
Chris@0:     if ($clean_urls === NULL) {
Chris@0:       // Assume clean URLs unless the request tells us otherwise.
Chris@0:       $clean_urls = TRUE;
Chris@0:       try {
Chris@0:         $request = \Drupal::request();
Chris@0:         $clean_urls = RequestHelper::isCleanUrl($request);
Chris@0:       }
Chris@0:       catch (ServiceNotFoundException $e) {
Chris@0:       }
Chris@0:     }
Chris@0: 
Chris@0:     // If not using clean URLs, the image derivative callback is only available
Chris@0:     // with the script path. If the file does not exist, use Url::fromUri() to
Chris@0:     // ensure that it is included. Once the file exists it's fine to fall back
Chris@0:     // to the actual file path, this avoids bootstrapping PHP once the files are
Chris@0:     // built.
Chris@0:     if ($clean_urls === FALSE && file_uri_scheme($uri) == 'public' && !file_exists($uri)) {
Chris@0:       $directory_path = $this->getStreamWrapperManager()->getViaUri($uri)->getDirectoryPath();
Chris@0:       return Url::fromUri('base:' . $directory_path . '/' . file_uri_target($uri), ['absolute' => TRUE, 'query' => $token_query])->toString();
Chris@0:     }
Chris@0: 
Chris@0:     $file_url = file_create_url($uri);
Chris@0:     // Append the query string with the token, if necessary.
Chris@0:     if ($token_query) {
Chris@0:       $file_url .= (strpos($file_url, '?') !== FALSE ? '&' : '?') . UrlHelper::buildQuery($token_query);
Chris@0:     }
Chris@0: 
Chris@0:     return $file_url;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function flush($path = NULL) {
Chris@0:     // A specific image path has been provided. Flush only that derivative.
Chris@18:     /** @var \Drupal\Core\File\FileSystemInterface $file_system */
Chris@18:     $file_system = \Drupal::service('file_system');
Chris@0:     if (isset($path)) {
Chris@0:       $derivative_uri = $this->buildUri($path);
Chris@0:       if (file_exists($derivative_uri)) {
Chris@18:         try {
Chris@18:           $file_system->delete($derivative_uri);
Chris@18:         }
Chris@18:         catch (FileException $e) {
Chris@18:           // Ignore failed deletes.
Chris@18:         }
Chris@0:       }
Chris@0:       return $this;
Chris@0:     }
Chris@0: 
Chris@0:     // Delete the style directory in each registered wrapper.
Chris@0:     $wrappers = $this->getStreamWrapperManager()->getWrappers(StreamWrapperInterface::WRITE_VISIBLE);
Chris@0:     foreach ($wrappers as $wrapper => $wrapper_data) {
Chris@0:       if (file_exists($directory = $wrapper . '://styles/' . $this->id())) {
Chris@18:         try {
Chris@18:           $file_system->deleteRecursive($directory);
Chris@18:         }
Chris@18:         catch (FileException $e) {
Chris@18:           // Ignore failed deletes.
Chris@18:         }
Chris@0:       }
Chris@0:     }
Chris@0: 
Chris@0:     // Let other modules update as necessary on flush.
Chris@0:     $module_handler = \Drupal::moduleHandler();
Chris@0:     $module_handler->invokeAll('image_style_flush', [$this]);
Chris@0: 
Chris@0:     // Clear caches so that formatters may be added for this style.
Chris@0:     drupal_theme_rebuild();
Chris@0: 
Chris@0:     Cache::invalidateTags($this->getCacheTagsToInvalidate());
Chris@0: 
Chris@0:     return $this;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function createDerivative($original_uri, $derivative_uri) {
Chris@0:     // If the source file doesn't exist, return FALSE without creating folders.
Chris@0:     $image = $this->getImageFactory()->get($original_uri);
Chris@0:     if (!$image->isValid()) {
Chris@0:       return FALSE;
Chris@0:     }
Chris@0: 
Chris@0:     // Get the folder for the final location of this style.
Chris@18:     $directory = \Drupal::service('file_system')->dirname($derivative_uri);
Chris@0: 
Chris@0:     // Build the destination folder tree if it doesn't already exist.
Chris@18:     if (!\Drupal::service('file_system')->prepareDirectory($directory, FileSystemInterface::CREATE_DIRECTORY | FileSystemInterface::MODIFY_PERMISSIONS)) {
Chris@0:       \Drupal::logger('image')->error('Failed to create style directory: %directory', ['%directory' => $directory]);
Chris@0:       return FALSE;
Chris@0:     }
Chris@0: 
Chris@0:     foreach ($this->getEffects() as $effect) {
Chris@0:       $effect->applyEffect($image);
Chris@0:     }
Chris@0: 
Chris@0:     if (!$image->save($derivative_uri)) {
Chris@0:       if (file_exists($derivative_uri)) {
Chris@0:         \Drupal::logger('image')->error('Cached image file %destination already exists. There may be an issue with your rewrite configuration.', ['%destination' => $derivative_uri]);
Chris@0:       }
Chris@0:       return FALSE;
Chris@0:     }
Chris@0: 
Chris@0:     return TRUE;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function transformDimensions(array &$dimensions, $uri) {
Chris@0:     foreach ($this->getEffects() as $effect) {
Chris@0:       $effect->transformDimensions($dimensions, $uri);
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getDerivativeExtension($extension) {
Chris@0:     foreach ($this->getEffects() as $effect) {
Chris@0:       $extension = $effect->getDerivativeExtension($extension);
Chris@0:     }
Chris@0:     return $extension;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getPathToken($uri) {
Chris@0:     // Return the first 8 characters.
Chris@0:     return substr(Crypt::hmacBase64($this->id() . ':' . $this->addExtension($uri), $this->getPrivateKey() . $this->getHashSalt()), 0, 8);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function deleteImageEffect(ImageEffectInterface $effect) {
Chris@0:     $this->getEffects()->removeInstanceId($effect->getUuid());
Chris@0:     $this->save();
Chris@0:     return $this;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function supportsUri($uri) {
Chris@0:     // Only support the URI if its extension is supported by the current image
Chris@0:     // toolkit.
Chris@0:     return in_array(
Chris@17:       mb_strtolower(pathinfo($uri, PATHINFO_EXTENSION)),
Chris@0:       $this->getImageFactory()->getSupportedExtensions()
Chris@0:     );
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getEffect($effect) {
Chris@0:     return $this->getEffects()->get($effect);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getEffects() {
Chris@0:     if (!$this->effectsCollection) {
Chris@0:       $this->effectsCollection = new ImageEffectPluginCollection($this->getImageEffectPluginManager(), $this->effects);
Chris@0:       $this->effectsCollection->sort();
Chris@0:     }
Chris@0:     return $this->effectsCollection;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getPluginCollections() {
Chris@0:     return ['effects' => $this->getEffects()];
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function addImageEffect(array $configuration) {
Chris@0:     $configuration['uuid'] = $this->uuidGenerator()->generate();
Chris@0:     $this->getEffects()->addInstanceId($configuration['uuid'], $configuration);
Chris@0:     return $configuration['uuid'];
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getReplacementID() {
Chris@0:     /** @var \Drupal\image\ImageStyleStorageInterface $storage */
Chris@0:     $storage = $this->entityTypeManager()->getStorage($this->getEntityTypeId());
Chris@0:     return $storage->getReplacementId($this->id());
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function getName() {
Chris@0:     return $this->get('name');
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function setName($name) {
Chris@0:     $this->set('name', $name);
Chris@0:     return $this;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Returns the image effect plugin manager.
Chris@0:    *
Chris@0:    * @return \Drupal\Component\Plugin\PluginManagerInterface
Chris@0:    *   The image effect plugin manager.
Chris@0:    */
Chris@0:   protected function getImageEffectPluginManager() {
Chris@0:     return \Drupal::service('plugin.manager.image.effect');
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Returns the image factory.
Chris@0:    *
Chris@0:    * @return \Drupal\Core\Image\ImageFactory
Chris@0:    *   The image factory.
Chris@0:    */
Chris@0:   protected function getImageFactory() {
Chris@0:     return \Drupal::service('image.factory');
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Gets the Drupal private key.
Chris@0:    *
Chris@0:    * @return string
Chris@0:    *   The Drupal private key.
Chris@0:    */
Chris@0:   protected function getPrivateKey() {
Chris@0:     return \Drupal::service('private_key')->get();
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Gets a salt useful for hardening against SQL injection.
Chris@0:    *
Chris@0:    * @return string
Chris@0:    *   A salt based on information in settings.php, not in the database.
Chris@0:    *
Chris@0:    * @throws \RuntimeException
Chris@0:    */
Chris@0:   protected function getHashSalt() {
Chris@0:     return Settings::getHashSalt();
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Adds an extension to a path.
Chris@0:    *
Chris@0:    * If this image style changes the extension of the derivative, this method
Chris@0:    * adds the new extension to the given path. This way we avoid filename
Chris@0:    * clashes while still allowing us to find the source image.
Chris@0:    *
Chris@0:    * @param string $path
Chris@0:    *   The path to add the extension to.
Chris@0:    *
Chris@0:    * @return string
Chris@0:    *   The given path if this image style doesn't change its extension, or the
Chris@0:    *   path with the added extension if it does.
Chris@0:    */
Chris@0:   protected function addExtension($path) {
Chris@0:     $original_extension = pathinfo($path, PATHINFO_EXTENSION);
Chris@0:     $extension = $this->getDerivativeExtension($original_extension);
Chris@0:     if ($original_extension !== $extension) {
Chris@0:       $path .= '.' . $extension;
Chris@0:     }
Chris@0:     return $path;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Provides a wrapper for file_uri_scheme() to allow unit testing.
Chris@0:    *
Chris@0:    * Returns the scheme of a URI (e.g. a stream).
Chris@0:    *
Chris@0:    * @param string $uri
Chris@0:    *   A stream, referenced as "scheme://target"  or "data:target".
Chris@0:    *
Chris@0:    * @see file_uri_target()
Chris@0:    *
Chris@0:    * @todo: Remove when https://www.drupal.org/node/2050759 is in.
Chris@0:    *
Chris@0:    * @return string
Chris@0:    *   A string containing the name of the scheme, or FALSE if none. For
Chris@0:    *   example, the URI "public://example.txt" would return "public".
Chris@0:    */
Chris@0:   protected function fileUriScheme($uri) {
Chris@0:     return file_uri_scheme($uri);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Provides a wrapper for file_uri_target() to allow unit testing.
Chris@0:    *
Chris@0:    * Returns the part of a URI after the schema.
Chris@0:    *
Chris@0:    * @param string $uri
Chris@0:    *   A stream, referenced as "scheme://target" or "data:target".
Chris@0:    *
Chris@0:    * @see file_uri_scheme()
Chris@0:    *
Chris@0:    * @todo: Convert file_uri_target() into a proper injectable service.
Chris@0:    *
Chris@0:    * @return string|bool
Chris@0:    *   A string containing the target (path), or FALSE if none.
Chris@0:    *   For example, the URI "public://sample/test.txt" would return
Chris@0:    *   "sample/test.txt".
Chris@0:    */
Chris@0:   protected function fileUriTarget($uri) {
Chris@0:     return file_uri_target($uri);
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Provides a wrapper for file_default_scheme() to allow unit testing.
Chris@0:    *
Chris@0:    * Gets the default file stream implementation.
Chris@0:    *
Chris@0:    * @todo: Convert file_default_scheme() into a proper injectable service.
Chris@0:    *
Chris@0:    * @return string
Chris@0:    *   'public', 'private' or any other file scheme defined as the default.
Chris@0:    */
Chris@0:   protected function fileDefaultScheme() {
Chris@0:     return file_default_scheme();
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Gets the stream wrapper manager service.
Chris@0:    *
Chris@0:    * @return \Drupal\Core\StreamWrapper\StreamWrapperManagerInterface
Chris@0:    *   The stream wrapper manager service
Chris@0:    *
Chris@0:    * @todo Properly inject this service in Drupal 9.0.x.
Chris@0:    */
Chris@0:   protected function getStreamWrapperManager() {
Chris@0:     return \Drupal::service('stream_wrapper_manager');
Chris@0:   }
Chris@0: 
Chris@0: }