location_selector-8.x-1.x-dev/src/Form/SettingsForm.php

<?php

namespace Drupal\location_selector\Form;

use Drupal\Core\Form\ConfigFormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Config\ConfigFactoryInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Class SettingsForm.
 */
class SettingsForm extends ConfigFormBase {

  /**
   * Drupal\Core\Config\ConfigFactoryInterface definition.
   *
   * @var \Drupal\Core\Config\ConfigFactoryInterface
   */
  protected $configFactory;

  /**
   * Constructs a new SettingsForm object.
   */
  public function __construct(ConfigFactoryInterface $config_factory) {
    parent::__construct($config_factory);
  }

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

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

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'settings_form';
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    $config = $this->config('location_selector.settings');
    $info_url = 'https://www.geonames.org/export/web-services.html';
    $form['geonames_username'] = [
      '#type' => 'textfield',
      '#title' => $this->t('GeoNames Username'),
      '#maxlength' => 64,
      '#size' => 64,
      '#default_value' => $config->get('geonames_username'),
      '#required' => TRUE,
      '#description' => t('More about the username and GeoNames webservice: <a href=":url" target="_blank">@url_name</a>', [':url' => $info_url, '@url_name' => $info_url]),
    ];
    return parent::buildForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    parent::validateForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    parent::submitForm($form, $form_state);

    $this->config('location_selector.settings')
      ->set('geonames_username', $form_state->getValue('geonames_username'))
      ->save();
  }

}