MetadataGenerator.php in Drupal 8

Namespace

Drupal\quickedit

File

core/modules/quickedit/src/MetadataGenerator.php

<?php

namespace Drupal\quickedit;

use Drupal\Component\Plugin\PluginManagerInterface;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\quickedit\Access\QuickEditEntityFieldAccessCheckInterface;
use Drupal\Core\Entity\Entity\EntityViewDisplay;

/**
 * Generates in-place editing metadata for an entity field.
 */
class MetadataGenerator implements MetadataGeneratorInterface {

  /**
   * An object that checks if a user has access to edit a given entity field.
   *
   * @var \Drupal\quickedit\Access\QuickEditEntityFieldAccessCheckInterface
   */
  protected $accessChecker;

  /**
   * An object that determines which editor to attach to a given field.
   *
   * @var \Drupal\quickedit\EditorSelectorInterface
   */
  protected $editorSelector;

  /**
   * The manager for editor plugins.
   *
   * @var \Drupal\Component\Plugin\PluginManagerInterface
   */
  protected $editorManager;

  /**
   * Constructs a new MetadataGenerator.
   *
   * @param \Drupal\quickedit\Access\QuickEditEntityFieldAccessCheckInterface $access_checker
   *   An object that checks if a user has access to edit a given field.
   * @param \Drupal\quickedit\EditorSelectorInterface $editor_selector
   *   An object that determines which editor to attach to a given field.
   * @param \Drupal\Component\Plugin\PluginManagerInterface $editor_manager
   *   The manager for editor plugins.
   */
  public function __construct(QuickEditEntityFieldAccessCheckInterface $access_checker, EditorSelectorInterface $editor_selector, PluginManagerInterface $editor_manager) {
    $this->accessChecker = $access_checker;
    $this->editorSelector = $editor_selector;
    $this->editorManager = $editor_manager;
  }

  /**
   * {@inheritdoc}
   */
  public function generateEntityMetadata(EntityInterface $entity) {
    return [
      'label' => $entity
        ->label(),
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function generateFieldMetadata(FieldItemListInterface $items, $view_mode) {
    $entity = $items
      ->getEntity();
    $field_name = $items
      ->getFieldDefinition()
      ->getName();

    // Early-return if user does not have access.
    $access = $this->accessChecker
      ->accessEditEntityField($entity, $field_name);
    if (!$access) {
      return [
        'access' => FALSE,
      ];
    }

    // Early-return if no editor is available.
    $formatter_id = EntityViewDisplay::collectRenderDisplay($entity, $view_mode)
      ->getRenderer($field_name)
      ->getPluginId();
    $editor_id = $this->editorSelector
      ->getEditor($formatter_id, $items);
    if (!isset($editor_id)) {
      return [
        'access' => FALSE,
      ];
    }

    // Gather metadata, allow the editor to add additional metadata of its own.
    $label = $items
      ->getFieldDefinition()
      ->getLabel();
    $editor = $this->editorManager
      ->createInstance($editor_id);
    $metadata = [
      'label' => $label,
      'access' => TRUE,
      'editor' => $editor_id,
    ];
    $custom_metadata = $editor
      ->getMetadata($items);
    if (count($custom_metadata)) {
      $metadata['custom'] = $custom_metadata;
    }
    return $metadata;
  }

}

Classes

Name	Description
MetadataGenerator	Generates in-place editing metadata for an entity field.