farm-2.x-dev/modules/core/data_stream/modules/notification/src/Plugin/DataStream/NotificationDelivery/NotificationDeliveryBase.php

<?php

namespace Drupal\data_stream_notification\Plugin\DataStream\NotificationDelivery;

use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Plugin\ContextAwarePluginTrait;
use Drupal\Core\Plugin\PluginBase;

/**
 * A base class for notification delivery plugins.
 */
abstract class NotificationDeliveryBase extends PluginBase implements NotificationDeliveryInterface {

  use ContextAwarePluginTrait;

  /**
   * {@inheritdoc}
   */
  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function validateConfigurationForm(array &$form, FormStateInterface $form_state) {
  }

  /**
   * {@inheritdoc}
   */
  public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
  }

  /**
   * {@inheritdoc}
   */
  public function getConfiguration() {
    return $this->configuration;
  }

  /**
   * {@inheritdoc}
   */
  public function setConfiguration(array $configuration) {
    $this->configuration = $configuration + $this->defaultConfiguration();
    return $this;
  }

  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration() {
    return [];
  }

}