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class PictureBackgroundFormatterMedia in Picture Background Formatter 8

Plugin implementation of the 'picture_background_formatter_media' formatter.

Plugin annotation


@FieldFormatter(
  id = "picture_background_formatter_media",
  label = @Translation("Picture background formatter"),
  field_types = {
    "entity_reference"
  }
)

Hierarchy

Expanded class hierarchy of PictureBackgroundFormatterMedia

File

src/Plugin/Field/FieldFormatter/PictureBackgroundFormatterMedia.php, line 20

Namespace

Drupal\picture_background_formatter\Plugin\Field\FieldFormatter
View source 
class PictureBackgroundFormatterMedia extends PictureBackgroundFormatter {

  /**
   * {@inheritdoc}
   *
   * This has to be overriden because FileFormatterBase expects $item to be
   * of type \Drupal\file\Plugin\Field\FieldType\FileItem and calls
   * isDisplayed() which is not in FieldItemInterface.
   */
  protected function needsEntityLoad(EntityReferenceItem $item) {
    return !$item
      ->hasNewEntity();
  }

  /**
   * {@inheritdoc}
   */
  public function viewElements(FieldItemListInterface $items, $langcode) {
    $media = $this
      ->getEntitiesToView($items, $langcode);
    $files = [];

    // Early opt-out if the field is empty.
    if (empty($media)) {
      return [];
    }

    // The parent entity, used for token replacement in the selector.
    $entity = $items
      ->getEntity();

    /** @var \Drupal\media\MediaInterface $media_item */
    foreach ($media as $delta => $media_item) {
      $type_configuration = method_exists($media_item, 'getSource') ? $media_item
        ->getSource()
        ->getConfiguration() : $media_item
        ->getType()
        ->getConfiguration();

      // Get the actual image entities from the media item.
      $image_items = isset($type_configuration['source_field']) ? $media_item
        ->get($type_configuration['source_field']) : NULL;
      foreach ($image_items as $image_item) {

        // Get each file entity.
        $files[] = $image_item->entity;
      }
    }
    return $this
      ->build_element($files, $entity);
  }

  /**
   * {@inheritdoc}
   */
  public static function isApplicable(FieldDefinitionInterface $field_definition) {

    // This formatter is only available for entity types that reference
    // media entities.
    $target_type = $field_definition
      ->getFieldStorageDefinition()
      ->getSetting('target_type');
    return $target_type == 'media';
  }

}

Members

Namesort descending Modifiers Type Description Overrides
DependencySerializationTrait::$_entityStorages protected property An array of entity type IDs keyed by the property name of their storages.
DependencySerializationTrait::$_serviceIds protected property An array of service IDs keyed by property name used for serialization.
DependencySerializationTrait::__sleep public function 1
DependencySerializationTrait::__wakeup public function 2
EntityReferenceFormatterBase::prepareView public function Loads the entities referenced in that field across all the entities being viewed. Overrides FormatterBase::prepareView
EntityReferenceFormatterBase::view public function Overrides FormatterBase::view
FileFormatterBase::checkAccess protected function Checks access to the given entity. Overrides EntityReferenceFormatterBase::checkAccess
FormatterBase::$fieldDefinition protected property The field definition.
FormatterBase::$label protected property The label display setting.
FormatterBase::$settings protected property The formatter settings. Overrides PluginSettingsBase::$settings
FormatterBase::$viewMode protected property The view mode.
FormatterBase::getFieldSetting protected function Returns the value of a field setting.
FormatterBase::getFieldSettings protected function Returns the array of field settings.
ImageFormatterBase::getEntitiesToView protected function Returns the referenced entities for display. Overrides EntityReferenceFormatterBase::getEntitiesToView
MessengerTrait::$messenger protected property The messenger. 29
MessengerTrait::messenger public function Gets the messenger. 29
MessengerTrait::setMessenger public function Sets the messenger.
PictureBackgroundFormatter::build_element protected function Build the inline css style based on a set of files and a selector.
PictureBackgroundFormatter::defaultSettings public static function Defines the default settings for this plugin. Overrides ResponsiveImageFormatter::defaultSettings
PictureBackgroundFormatter::generate_background_css protected function CSS Generator Helper Function.
PictureBackgroundFormatter::settingsForm public function Returns a form to configure settings for the formatter. Overrides ResponsiveImageFormatter::settingsForm
PictureBackgroundFormatter::settingsSummary public function Returns a short summary for the current formatter settings. Overrides ResponsiveImageFormatter::settingsSummary
PictureBackgroundFormatterMedia::isApplicable public static function Returns if the formatter can be used for the provided field. Overrides FormatterBase::isApplicable
PictureBackgroundFormatterMedia::needsEntityLoad protected function This has to be overriden because FileFormatterBase expects $item to be of type \Drupal\file\Plugin\Field\FieldType\FileItem and calls isDisplayed() which is not in FieldItemInterface. Overrides FileFormatterBase::needsEntityLoad
PictureBackgroundFormatterMedia::viewElements public function Builds a renderable array for a field value. Overrides PictureBackgroundFormatter::viewElements
PluginBase::$configuration protected property Configuration information passed into the plugin. 1
PluginBase::$pluginDefinition protected property The plugin implementation definition. 1
PluginBase::$pluginId protected property The plugin_id.
PluginBase::DERIVATIVE_SEPARATOR constant A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId public function Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId public function Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition public function Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition 3
PluginBase::getPluginId public function Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable public function Determines if the plugin is configurable.
PluginSettingsBase::$defaultSettingsMerged protected property Whether default settings have been merged into the current $settings.
PluginSettingsBase::$thirdPartySettings protected property The plugin settings injected by third party modules.
PluginSettingsBase::getSetting public function Returns the value of a setting, or its default value if absent. Overrides PluginSettingsInterface::getSetting
PluginSettingsBase::getSettings public function Returns the array of settings, including defaults for missing settings. Overrides PluginSettingsInterface::getSettings
PluginSettingsBase::getThirdPartyProviders public function Gets the list of third parties that store information. Overrides ThirdPartySettingsInterface::getThirdPartyProviders
PluginSettingsBase::getThirdPartySetting public function Gets the value of a third-party setting. Overrides ThirdPartySettingsInterface::getThirdPartySetting
PluginSettingsBase::getThirdPartySettings public function Gets all third-party settings of a given module. Overrides ThirdPartySettingsInterface::getThirdPartySettings
PluginSettingsBase::mergeDefaults protected function Merges default settings values into $settings.
PluginSettingsBase::onDependencyRemoval public function Informs the plugin that some configuration it depends on will be deleted. Overrides PluginSettingsInterface::onDependencyRemoval 3
PluginSettingsBase::setSetting public function Sets the value of a setting for the plugin. Overrides PluginSettingsInterface::setSetting
PluginSettingsBase::setSettings public function Sets the settings for the plugin. Overrides PluginSettingsInterface::setSettings
PluginSettingsBase::setThirdPartySetting public function Sets the value of a third-party setting. Overrides ThirdPartySettingsInterface::setThirdPartySetting
PluginSettingsBase::unsetThirdPartySetting public function Unsets a third-party setting. Overrides ThirdPartySettingsInterface::unsetThirdPartySetting
ResponsiveImageFormatter::$currentUser protected property The current user.
ResponsiveImageFormatter::$imageStyleStorage protected property
ResponsiveImageFormatter::$linkGenerator protected property The link generator.
ResponsiveImageFormatter::$responsiveImageStyleStorage protected property
ResponsiveImageFormatter::calculateDependencies public function Calculates dependencies for the configured plugin. Overrides PluginSettingsBase::calculateDependencies
ResponsiveImageFormatter::create public static function Creates an instance of the plugin. Overrides FormatterBase::create
ResponsiveImageFormatter::__construct public function Constructs a ResponsiveImageFormatter object. Overrides FormatterBase::__construct
StringTranslationTrait::$stringTranslation protected property The string translation service. 1
StringTranslationTrait::formatPlural protected function Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals protected function Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation protected function Gets the string translation service.
StringTranslationTrait::setStringTranslation public function Sets the string translation service to use. 2
StringTranslationTrait::t protected function Translates a string to the current language or to a given language.