knowledge-8.x-1.x-dev/modules/knowledge_ldap/src/Form/SettingsForm.php

<?php

namespace Drupal\knowledge_ldap\Form;

use Drupal\Core\Cache\CacheTagsInvalidatorInterface;
use Drupal\Core\Config\ConfigFactoryInterface;
use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\Form\ConfigFormBase;
use Drupal\Core\Form\FormStateInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Settings for the knowledge module.
 */
class SettingsForm extends ConfigFormBase {

  /**
   * The node type storage service.
   *
   * @var \Drupal\Core\Config\Entity\ConfigEntityStorageInterface
   */
  protected $nodeTypeStorage;

  /**
   * The cache tag invalidator.
   *
   * @var \Drupal\Core\Cache\CacheTagsInvalidatorInterface
   */
  protected $cacheInvalidator;

  /**
   * Constructs a \Drupal\system\ConfigFormBase object.
   *
   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
   *   The factory for configuration objects.
   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
   *   The entity type manager service.
   * @param \Drupal\Core\Cache\CacheTagsInvalidatorInterface $cache_invalidator
   *   The cache tag invalidation service.
   */
  public function __construct(ConfigFactoryInterface $config_factory, EntityTypeManagerInterface $entity_type_manager, CacheTagsInvalidatorInterface $cache_invalidator) {
    $this->setConfigFactory($config_factory);
    $this->nodeTypeStorage = $entity_type_manager->getStorage('node_type');
    $this->cacheInvalidator = $cache_invalidator;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static(
      $container->get('config.factory'),
      $container->get('entity_type.manager'),
      $container->get('cache_tags.invalidator')
    );
  }

  /**
   * {@inheritdoc}
   */
  protected function getEditableConfigNames() {
    return ['knowledge_ldap.settings'];
  }

  /**
   * {@inheritdoc}
   */
  public function getFormId() : string {
    return "knowledge_ldap_settings_form";
  }

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

    $settings = $this->config('knowledge_ldap.settings');

    $form['leader_token'] = [
      '#type' => 'textfield',
      '#title' => $this->t('Leader Token'),
      '#description' => $this->t('The token that identifies a leader. This is used to identify the leader in LDAP.'),
      '#default_value' => $settings->get('leader_token'),
    ];

    return parent::buildForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $settings = $this->config('knowledge_ldap.settings');

    $settings
      ->set('leader_token', $form_state->getValue('leader_token'))
      ->save();

    return parent::submitForm($form, $form_state);
  }

}