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<?php | |
/** | |
* @file | |
* Contains \Drupal\Core\Field\FormatterInterface. | |
*/ | |
namespace Drupal\Core\Field; | |
use Drupal\Core\Form\FormStateInterface; | |
/** | |
* Interface definition for field formatter plugins. | |
* | |
* @ingroup field_formatter | |
*/ | |
interface FormatterInterface extends PluginSettingsInterface { | |
/** | |
* Returns a form to configure settings for the formatter. | |
* | |
* Invoked from \Drupal\field_ui\Form\EntityDisplayFormBase to allow | |
* administrators to configure the formatter. The field_ui module takes care | |
* of handling submitted form values. | |
* | |
* @param array $form | |
* The form where the settings form is being included in. | |
* @param \Drupal\Core\Form\FormStateInterface $form_state | |
* The current state of the form. | |
* | |
* @return array | |
* The form elements for the formatter settings. | |
*/ | |
public function settingsForm(array $form, FormStateInterface $form_state); | |
/** | |
* Returns a short summary for the current formatter settings. | |
* | |
* If an empty result is returned, a UI can still be provided to display | |
* a settings form in case the formatter has configurable settings. | |
* | |
* @return string[] | |
* A short summary of the formatter settings. | |
*/ | |
public function settingsSummary(); | |
/** | |
* Allows formatters to load information for field values being displayed. | |
* | |
* This should be used when a formatter needs to load additional information | |
* from the database in order to render a field, for example a reference | |
* field that displays properties of the referenced entities such as name or | |
* type. | |
* | |
* This method operates on multiple entities. The $entities_items parameter | |
* is an array keyed by entity ID. For performance reasons, information for | |
* all involved entities should be loaded in a single query where possible. | |
* | |
* Changes or additions to field values are done by directly altering the | |
* items. | |
* | |
* @param \Drupal\Core\Field\FieldItemListInterface[] $entities_items | |
* An array with the field values from the multiple entities being rendered. | |
*/ | |
public function prepareView(array $entities_items); | |
/** | |
* Builds a renderable array for a fully themed field. | |
* | |
* @param \Drupal\Core\Field\FieldItemListInterface $items | |
* The field values to be rendered. | |
* @param string $langcode | |
* (optional) The language that should be used to render the field. Defaults | |
* to the current content language. | |
* | |
* @return array | |
* A renderable array for a themed field with its label and all its values. | |
*/ | |
public function view(FieldItemListInterface $items, $langcode = NULL); | |
/** | |
* Builds a renderable array for a field value. | |
* | |
* @param \Drupal\Core\Field\FieldItemListInterface $items | |
* The field values to be rendered. | |
* @param string $langcode | |
* The language that should be used to render the field. | |
* | |
* @return array | |
* A renderable array for $items, as an array of child elements keyed by | |
* consecutive numeric indexes starting from 0. | |
*/ | |
public function viewElements(FieldItemListInterface $items, $langcode); | |
/** | |
* Returns if the formatter can be used for the provided field. | |
* | |
* @param \Drupal\Core\Field\FieldDefinitionInterface $field_definition | |
* The field definition that should be checked. | |
* | |
* @return bool | |
* TRUE if the formatter can be used, FALSE otherwise. | |
*/ | |
public static function isApplicable(FieldDefinitionInterface $field_definition); | |
} |