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class ImageUrlFormatter in Backports 8

Plugin implementation of the 'image_url' formatter.

Plugin annotation


@FieldFormatter(
  id = "image_url",
  label = @Translation("URL to image"),
  field_types = {
    "image"
  }
)

Hierarchy

Expanded class hierarchy of ImageUrlFormatter

File

src/Plugin/Field/FieldFormatter/ImageUrlFormatter.php, line 22

Namespace

Drupal\backports\Plugin\Field\FieldFormatter
View source 
class ImageUrlFormatter extends ImageFormatter {

  /**
   * {@inheritdoc}
   */
  public function viewElements(FieldItemListInterface $items, $langcode) {
    $elements = [];

    /** @var \Drupal\file\Entity\File[] $images */
    $images = $this
      ->getEntitiesToView($items, $langcode);

    // Early opt-out if the field is empty.
    if (empty($images)) {
      return $elements;
    }
    $image_link_setting = $this
      ->getSetting('image_link');

    // Url to be linked to.
    $link_url = FALSE;

    // Check if the formatter involves a link.
    if ($image_link_setting == 'content') {
      $entity = $items
        ->getEntity();
      if (!$entity
        ->isNew()) {
        $link_url = $entity
          ->urlInfo();
      }
    }

    /** @var \Drupal\image\Entity\ImageStyle|false $image_style */
    $image_style = ($image_style_setting = $this
      ->getSetting('image_style')) && !empty($image_style_setting) ? $this->imageStyleStorage
      ->load($image_style_setting) : NULL;
    foreach ($images as $delta => $image) {

      /** @var \Drupal\file\Entity\File $image */
      $image_uri = $image
        ->getFileUri();
      $url = $image_style ? $image_style
        ->buildUrl($image_uri) : file_create_url($image_uri);

      // Set the link url if settings require such.
      $link_url = $image_link_setting == 'file' ? Url::fromUri($url) : $link_url;

      // Add cacheable metadata from the image and image style.
      $cacheable_metadata = CacheableMetadata::createFromObject($image);
      if ($image_style) {
        $cacheable_metadata = $cacheable_metadata
          ->merge(CacheableMetadata::createFromObject($image_style));
      }

      // Add a link if we have a valid link url.
      if ($link_url instanceof Url) {
        $elements[$delta] = Link::fromTextAndUrl($url, $link_url)
          ->toRenderable();
      }
      else {
        $elements[$delta] = [
          '#markup' => $url,
        ];
      }
      $cacheable_metadata
        ->applyTo($elements[$delta]);
    }
    return $elements;
  }

}

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
FileFormatterBase::needsEntityLoad protected function Returns whether the entity referenced by an item needs to be loaded. Overrides EntityReferenceFormatterBase::needsEntityLoad 1
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::$viewMode protected property The view mode.
FormatterBase::getFieldSetting protected function Returns the value of a field setting.
FormatterBase::getFieldSettings protected function Returns the array of field settings.
FormatterBase::isApplicable public static function Returns if the formatter can be used for the provided field. Overrides FormatterInterface::isApplicable 14
ImageFormatter::$currentUser protected property The current user.
ImageFormatter::$imageStyleStorage protected property The image style entity storage.
ImageFormatter::calculateDependencies public function Calculates dependencies for the configured plugin. Overrides PluginSettingsBase::calculateDependencies
ImageFormatter::create public static function Creates an instance of the plugin. Overrides FormatterBase::create 1
ImageFormatter::defaultSettings public static function Defines the default settings for this plugin. Overrides PluginSettingsBase::defaultSettings 1
ImageFormatter::onDependencyRemoval public function Informs the plugin that some configuration it depends on will be deleted. Overrides PluginSettingsBase::onDependencyRemoval
ImageFormatter::settingsForm public function Returns a form to configure settings for the formatter. Overrides FormatterBase::settingsForm 2
ImageFormatter::settingsSummary public function Returns a short summary for the current formatter settings. Overrides FormatterBase::settingsSummary 2
ImageFormatter::__construct public function Constructs an ImageFormatter object. Overrides FormatterBase::__construct 1
ImageFormatterBase::getEntitiesToView protected function Returns the referenced entities for display. Overrides EntityReferenceFormatterBase::getEntitiesToView
ImageUrlFormatter::viewElements public function Builds a renderable array for a field value. Overrides ImageFormatter::viewElements
MessengerTrait::$messenger protected property The messenger. 29
MessengerTrait::messenger public function Gets the messenger. 29
MessengerTrait::setMessenger public function Sets the messenger.
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 $settings.
PluginSettingsBase::setSetting public function Sets the value of a setting for the plugin. Overrides PluginSettingsInterface::setSetting
PluginSettingsBase::setSettings public function Sets the settings for the plugin. Overrides PluginSettingsInterface::setSettings
PluginSettingsBase::setThirdPartySetting public function Sets the value of a third-party setting. Overrides ThirdPartySettingsInterface::setThirdPartySetting
PluginSettingsBase::unsetThirdPartySetting public function Unsets a third-party setting. Overrides ThirdPartySettingsInterface::unsetThirdPartySetting
StringTranslationTrait::$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.