Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\node\Plugin\Action;
Chris@0: 
Chris@0: use Drupal\Core\Action\ConfigurableActionBase;
Chris@0: use Drupal\Core\Database\Connection;
Chris@0: use Drupal\Core\Form\FormStateInterface;
Chris@0: use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
Chris@0: use Drupal\Core\Session\AccountInterface;
Chris@0: use Drupal\user\Entity\User;
Chris@0: use Symfony\Component\DependencyInjection\ContainerInterface;
Chris@0: 
Chris@0: /**
Chris@0:  * Assigns ownership of a node to a user.
Chris@0:  *
Chris@0:  * @Action(
Chris@0:  *   id = "node_assign_owner_action",
Chris@0:  *   label = @Translation("Change the author of content"),
Chris@0:  *   type = "node"
Chris@0:  * )
Chris@0:  */
Chris@0: class AssignOwnerNode extends ConfigurableActionBase implements ContainerFactoryPluginInterface {
Chris@0: 
Chris@0:   /**
Chris@0:    * The database connection.
Chris@0:    *
Chris@0:    * @var \Drupal\Core\Database\Connection
Chris@0:    */
Chris@0:   protected $connection;
Chris@0: 
Chris@0:   /**
Chris@0:    * Constructs a new AssignOwnerNode action.
Chris@0:    *
Chris@0:    * @param array $configuration
Chris@0:    *   A configuration array containing information about the plugin instance.
Chris@0:    * @param string $plugin_id
Chris@0:    *   The plugin ID for the plugin instance.
Chris@0:    * @param mixed $plugin_definition
Chris@0:    *   The plugin implementation definition.
Chris@0:    * @param \Drupal\Core\Database\Connection $connection
Chris@0:    *   The database connection.
Chris@0:    */
Chris@0:   public function __construct(array $configuration, $plugin_id, $plugin_definition, Connection $connection) {
Chris@0:     parent::__construct($configuration, $plugin_id, $plugin_definition);
Chris@0: 
Chris@0:     $this->connection = $connection;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
Chris@0:     return new static($configuration, $plugin_id, $plugin_definition,
Chris@0:       $container->get('database')
Chris@0:     );
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function execute($entity = NULL) {
Chris@0:     /** @var \Drupal\node\NodeInterface $entity */
Chris@0:     $entity->setOwnerId($this->configuration['owner_uid'])->save();
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function defaultConfiguration() {
Chris@0:     return [
Chris@0:       'owner_uid' => '',
Chris@0:     ];
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
Chris@0:     $description = t('The username of the user to which you would like to assign ownership.');
Chris@0:     $count = $this->connection->query("SELECT COUNT(*) FROM {users}")->fetchField();
Chris@0: 
Chris@0:     // Use dropdown for fewer than 200 users; textbox for more than that.
Chris@0:     if (intval($count) < 200) {
Chris@0:       $options = [];
Chris@0:       $result = $this->connection->query("SELECT uid, name FROM {users_field_data} WHERE uid > 0 AND default_langcode = 1 ORDER BY name");
Chris@0:       foreach ($result as $data) {
Chris@0:         $options[$data->uid] = $data->name;
Chris@0:       }
Chris@0:       $form['owner_uid'] = [
Chris@0:         '#type' => 'select',
Chris@0:         '#title' => t('Username'),
Chris@0:         '#default_value' => $this->configuration['owner_uid'],
Chris@0:         '#options' => $options,
Chris@0:         '#description' => $description,
Chris@0:       ];
Chris@0:     }
Chris@0:     else {
Chris@0:       $form['owner_uid'] = [
Chris@0:         '#type' => 'entity_autocomplete',
Chris@0:         '#title' => t('Username'),
Chris@0:         '#target_type' => 'user',
Chris@0:         '#selection_setttings' => [
Chris@0:           'include_anonymous' => FALSE,
Chris@0:         ],
Chris@0:         '#default_value' => User::load($this->configuration['owner_uid']),
Chris@0:         // Validation is done in static::validateConfigurationForm().
Chris@0:         '#validate_reference' => FALSE,
Chris@0:         '#size' => '6',
Chris@0:         '#maxlength' => '60',
Chris@0:         '#description' => $description,
Chris@0:       ];
Chris@0:     }
Chris@0:     return $form;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function validateConfigurationForm(array &$form, FormStateInterface $form_state) {
Chris@0:     $exists = (bool) $this->connection->queryRange('SELECT 1 FROM {users_field_data} WHERE uid = :uid AND default_langcode = 1', 0, 1, [':uid' => $form_state->getValue('owner_uid')])->fetchField();
Chris@0:     if (!$exists) {
Chris@0:       $form_state->setErrorByName('owner_uid', t('Enter a valid username.'));
Chris@0:     }
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
Chris@0:     $this->configuration['owner_uid'] = $form_state->getValue('owner_uid');
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * {@inheritdoc}
Chris@0:    */
Chris@0:   public function access($object, AccountInterface $account = NULL, $return_as_object = FALSE) {
Chris@0:     /** @var \Drupal\node\NodeInterface $object */
Chris@0:     $result = $object->access('update', $account, TRUE)
Chris@0:       ->andIf($object->getOwner()->access('edit', $account, TRUE));
Chris@0: 
Chris@0:     return $return_as_object ? $result : $result->isAllowed();
Chris@0:   }
Chris@0: 
Chris@0: }