AccountSettingsForm::buildForm

public AccountSettingsForm::buildForm(array $form, FormStateInterface $form_state)

public function buildForm(array $form, FormStateInterface $form_state) {
  $form = parent::buildForm($form, $form_state);
  $config = $this->config('user.settings');
  $mail_config = $this->config('user.mail');
  $site_config = $this->config('system.site');

  $form['#attached']['library'][] = 'user/drupal.user.admin';

  // Settings for anonymous users.
  $form['anonymous_settings'] = array(
    '#type' => 'details',
    '#title' => $this->t('Anonymous users'),
    '#open' => TRUE,
  );
  $form['anonymous_settings']['anonymous'] = array(
    '#type' => 'textfield',
    '#title' => $this->t('Name'),
    '#default_value' => $config->get('anonymous'),
    '#description' => $this->t('The name used to indicate anonymous users.'),
    '#required' => TRUE,
  );

  // Administrative role option.
  $form['admin_role'] = array(
    '#type' => 'details',
    '#title' => $this->t('Administrator role'),
    '#open' => TRUE,
  );
  // Do not allow users to set the anonymous or authenticated user roles as the
  // administrator role.
  $roles = user_role_names(TRUE);
  unset($roles[RoleInterface::AUTHENTICATED_ID]);

  $admin_roles = $this->roleStorage->getQuery()
    ->condition('is_admin', TRUE)
    ->execute();
  $default_value = reset($admin_roles);

  $form['admin_role']['user_admin_role'] = array(
    '#type' => 'select',
    '#title' => $this->t('Administrator role'),
    '#empty_value' => '',
    '#default_value' => $default_value,
    '#options' => $roles,
    '#description' => $this->t('This role will be automatically assigned new permissions whenever a module is enabled. Changing this setting will not affect existing permissions.'),
    // Don't allow to select a single admin role in case multiple roles got
    // marked as admin role already.
    '#access' => count($admin_roles) <= 1,
  );

  // @todo Remove this check once language settings are generalized.
  if ($this->moduleHandler->moduleExists('content_translation')) {
    $form['language'] = array(
      '#type' => 'details',
      '#title' => $this->t('Language settings'),
      '#open' => TRUE,
      '#tree' => TRUE,
    );
    $form_state->set(['content_translation', 'key'], 'language');
    $form['language'] += content_translation_enable_widget('user', 'user', $form, $form_state);
  }

  // User registration settings.
  $form['registration_cancellation'] = array(
    '#type' => 'details',
    '#title' => $this->t('Registration and cancellation'),
    '#open' => TRUE,
  );
  $form['registration_cancellation']['user_register'] = array(
    '#type' => 'radios',
    '#title' => $this->t('Who can register accounts?'),
    '#default_value' => $config->get('register'),
    '#options' => array(
      USER_REGISTER_ADMINISTRATORS_ONLY => $this->t('Administrators only'),
      USER_REGISTER_VISITORS => $this->t('Visitors'),
      USER_REGISTER_VISITORS_ADMINISTRATIVE_APPROVAL => $this->t('Visitors, but administrator approval is required'),
    )
  );
  $form['registration_cancellation']['user_email_verification'] = array(
    '#type' => 'checkbox',
    '#title' => $this->t('Require email verification when a visitor creates an account'),
    '#default_value' => $config->get('verify_mail'),
    '#description' => $this->t('New users will be required to validate their email address prior to logging into the site, and will be assigned a system-generated password. With this setting disabled, users will be logged in immediately upon registering, and may select their own passwords during registration.')
  );
  $form['registration_cancellation']['user_password_strength'] = array(
    '#type' => 'checkbox',
    '#title' => $this->t('Enable password strength indicator'),
    '#default_value' => $config->get('password_strength'),
  );
  $form['registration_cancellation']['user_cancel_method'] = array(
    '#type' => 'radios',
    '#title' => $this->t('When cancelling a user account'),
    '#default_value' => $config->get('cancel_method'),
    '#description' => $this->t('Users with the %select-cancel-method or %administer-users <a href=":permissions-url">permissions</a> can override this default method.', array('%select-cancel-method' => $this->t('Select method for cancelling account'), '%administer-users' => $this->t('Administer users'), ':permissions-url' => $this->url('user.admin_permissions'))),
  );
  $form['registration_cancellation']['user_cancel_method'] += user_cancel_methods();
  foreach (Element::children($form['registration_cancellation']['user_cancel_method']) as $key) {
    // All account cancellation methods that specify #access cannot be
    // configured as default method.
    // @see hook_user_cancel_methods_alter()
    if (isset($form['registration_cancellation']['user_cancel_method'][$key]['#access'])) {
      $form['registration_cancellation']['user_cancel_method'][$key]['#access'] = FALSE;
    }
  }

  // Default notifications address.
  $form['mail_notification_address'] = array(
    '#type' => 'email',
    '#title' => $this->t('Notification email address'),
    '#default_value' => $site_config->get('mail_notification'),
    '#description' => $this->t("The email address to be used as the 'from' address for all account notifications listed below. If <em>'Visitors, but administrator approval is required'</em> is selected above, a notification email will also be sent to this address for any new registrations. Leave empty to use the default system email address <em>(%site-email).</em>", array('%site-email' => $site_config->get('mail'))),
    '#maxlength' => 180,
  );

  $form['email'] = array(
    '#type' => 'vertical_tabs',
    '#title' => $this->t('Emails'),
  );
  // These email tokens are shared for all settings, so just define
  // the list once to help ensure they stay in sync.
  $email_token_help = $this->t('Available variables are: [site:name], [site:url], [user:display-name], [user:account-name], [user:mail], [site:login-url], [site:url-brief], [user:edit-url], [user:one-time-login-url], [user:cancel-url].');

  $form['email_admin_created'] = array(
    '#type' => 'details',
    '#title' => $this->t('Welcome (new user created by administrator)'),
    '#open' => $config->get('register') == USER_REGISTER_ADMINISTRATORS_ONLY,
    '#description' => $this->t('Edit the welcome email messages sent to new member accounts created by an administrator.') . ' ' . $email_token_help,
    '#group' => 'email',
  );
  $form['email_admin_created']['user_mail_register_admin_created_subject'] = array(
    '#type' => 'textfield',
    '#title' => $this->t('Subject'),
    '#default_value' => $mail_config->get('register_admin_created.subject'),
    '#maxlength' => 180,
  );
  $form['email_admin_created']['user_mail_register_admin_created_body'] = array(
    '#type' => 'textarea',
    '#title' => $this->t('Body'),
    '#default_value' => $mail_config->get('register_admin_created.body'),
    '#rows' => 15,
  );

  $form['email_pending_approval'] = array(
    '#type' => 'details',
    '#title' => $this->t('Welcome (awaiting approval)'),
    '#open' => $config->get('register') == USER_REGISTER_VISITORS_ADMINISTRATIVE_APPROVAL,
    '#description' => $this->t('Edit the welcome email messages sent to new members upon registering, when administrative approval is required.') . ' ' . $email_token_help,
    '#group' => 'email',
  );
  $form['email_pending_approval']['user_mail_register_pending_approval_subject'] = array(
    '#type' => 'textfield',
    '#title' => $this->t('Subject'),
    '#default_value' => $mail_config->get('register_pending_approval.subject'),
    '#maxlength' => 180,
  );
  $form['email_pending_approval']['user_mail_register_pending_approval_body'] = array(
    '#type' => 'textarea',
    '#title' => $this->t('Body'),
    '#default_value' => $mail_config->get('register_pending_approval.body'),
    '#rows' => 8,
  );

  $form['email_pending_approval_admin'] = array(
    '#type' => 'details',
    '#title' => $this->t('Admin (user awaiting approval)'),
    '#open' => $config->get('register') == USER_REGISTER_VISITORS_ADMINISTRATIVE_APPROVAL,
    '#description' => $this->t('Edit the email notifying the site administrator that there are new members awaiting administrative approval.') . ' ' . $email_token_help,
    '#group' => 'email',
  );
  $form['email_pending_approval_admin']['register_pending_approval_admin_subject'] = array(
    '#type' => 'textfield',
    '#title' => $this->t('Subject'),
    '#default_value' => $mail_config->get('register_pending_approval_admin.subject'),
    '#maxlength' => 180,
  );
  $form['email_pending_approval_admin']['register_pending_approval_admin_body'] = array(
    '#type' => 'textarea',
    '#title' => $this->t('Body'),
    '#default_value' => $mail_config->get('register_pending_approval_admin.body'),
    '#rows' => 8,
  );

  $form['email_no_approval_required'] = array(
    '#type' => 'details',
    '#title' => $this->t('Welcome (no approval required)'),
    '#open' => $config->get('register') == USER_REGISTER_VISITORS,
    '#description' => $this->t('Edit the welcome email messages sent to new members upon registering, when no administrator approval is required.') . ' ' . $email_token_help,
    '#group' => 'email',
  );
  $form['email_no_approval_required']['user_mail_register_no_approval_required_subject'] = array(
    '#type' => 'textfield',
    '#title' => $this->t('Subject'),
    '#default_value' => $mail_config->get('register_no_approval_required.subject'),
    '#maxlength' => 180,
  );
  $form['email_no_approval_required']['user_mail_register_no_approval_required_body'] = array(
    '#type' => 'textarea',
    '#title' => $this->t('Body'),
    '#default_value' => $mail_config->get('register_no_approval_required.body'),
    '#rows' => 15,
  );

  $form['email_password_reset'] = array(
    '#type' => 'details',
    '#title' => $this->t('Password recovery'),
    '#description' => $this->t('Edit the email messages sent to users who request a new password.') . ' ' . $email_token_help,
    '#group' => 'email',
    '#weight' => 10,
  );
  $form['email_password_reset']['user_mail_password_reset_subject'] = array(
    '#type' => 'textfield',
    '#title' => $this->t('Subject'),
    '#default_value' => $mail_config->get('password_reset.subject'),
    '#maxlength' => 180,
  );
  $form['email_password_reset']['user_mail_password_reset_body'] = array(
    '#type' => 'textarea',
    '#title' => $this->t('Body'),
    '#default_value' => $mail_config->get('password_reset.body'),
    '#rows' => 12,
  );

  $form['email_activated'] = array(
    '#type' => 'details',
    '#title' => $this->t('Account activation'),
    '#description' => $this->t('Enable and edit email messages sent to users upon account activation (when an administrator activates an account of a user who has already registered, on a site where administrative approval is required).') . ' ' . $email_token_help,
    '#group' => 'email',
  );
  $form['email_activated']['user_mail_status_activated_notify'] = array(
    '#type' => 'checkbox',
    '#title' => $this->t('Notify user when account is activated'),
    '#default_value' => $config->get('notify.status_activated'),
  );
  $form['email_activated']['settings'] = array(
    '#type' => 'container',
    '#states' => array(
      // Hide the additional settings when this email is disabled.
      'invisible' => array(
        'input[name="user_mail_status_activated_notify"]' => array('checked' => FALSE),
      ),
    ),
  );
  $form['email_activated']['settings']['user_mail_status_activated_subject'] = array(
    '#type' => 'textfield',
    '#title' => $this->t('Subject'),
    '#default_value' => $mail_config->get('status_activated.subject'),
    '#maxlength' => 180,
  );
  $form['email_activated']['settings']['user_mail_status_activated_body'] = array(
    '#type' => 'textarea',
    '#title' => $this->t('Body'),
    '#default_value' => $mail_config->get('status_activated.body'),
    '#rows' => 15,
  );

  $form['email_blocked'] = array(
    '#type' => 'details',
    '#title' => $this->t('Account blocked'),
    '#description' => $this->t('Enable and edit email messages sent to users when their accounts are blocked.') . ' ' . $email_token_help,
    '#group' => 'email',
  );
  $form['email_blocked']['user_mail_status_blocked_notify'] = array(
    '#type' => 'checkbox',
    '#title' => $this->t('Notify user when account is blocked'),
    '#default_value' => $config->get('notify.status_blocked'),
  );
  $form['email_blocked']['settings'] = array(
    '#type' => 'container',
    '#states' => array(
      // Hide the additional settings when the blocked email is disabled.
      'invisible' => array(
        'input[name="user_mail_status_blocked_notify"]' => array('checked' => FALSE),
      ),
    ),
  );
  $form['email_blocked']['settings']['user_mail_status_blocked_subject'] = array(
    '#type' => 'textfield',
    '#title' => $this->t('Subject'),
    '#default_value' => $mail_config->get('status_blocked.subject'),
    '#maxlength' => 180,
  );
  $form['email_blocked']['settings']['user_mail_status_blocked_body'] = array(
    '#type' => 'textarea',
    '#title' => $this->t('Body'),
    '#default_value' => $mail_config->get('status_blocked.body'),
    '#rows' => 3,
  );

  $form['email_cancel_confirm'] = array(
    '#type' => 'details',
    '#title' => $this->t('Account cancellation confirmation'),
    '#description' => $this->t('Edit the email messages sent to users when they attempt to cancel their accounts.') . ' ' . $email_token_help,
    '#group' => 'email',
  );
  $form['email_cancel_confirm']['user_mail_cancel_confirm_subject'] = array(
    '#type' => 'textfield',
    '#title' => $this->t('Subject'),
    '#default_value' => $mail_config->get('cancel_confirm.subject'),
    '#maxlength' => 180,
  );
  $form['email_cancel_confirm']['user_mail_cancel_confirm_body'] = array(
    '#type' => 'textarea',
    '#title' => $this->t('Body'),
    '#default_value' => $mail_config->get('cancel_confirm.body'),
    '#rows' => 3,
  );

  $form['email_canceled'] = array(
    '#type' => 'details',
    '#title' => $this->t('Account canceled'),
    '#description' => $this->t('Enable and edit email messages sent to users when their accounts are canceled.') . ' ' . $email_token_help,
    '#group' => 'email',
  );
  $form['email_canceled']['user_mail_status_canceled_notify'] = array(
    '#type' => 'checkbox',
    '#title' => $this->t('Notify user when account is canceled'),
    '#default_value' => $config->get('notify.status_canceled'),
  );
  $form['email_canceled']['settings'] = array(
    '#type' => 'container',
    '#states' => array(
      // Hide the settings when the cancel notify checkbox is disabled.
      'invisible' => array(
        'input[name="user_mail_status_canceled_notify"]' => array('checked' => FALSE),
      ),
    ),
  );
  $form['email_canceled']['settings']['user_mail_status_canceled_subject'] = array(
    '#type' => 'textfield',
    '#title' => $this->t('Subject'),
    '#default_value' => $mail_config->get('status_canceled.subject'),
    '#maxlength' => 180,
  );
  $form['email_canceled']['settings']['user_mail_status_canceled_body'] = array(
    '#type' => 'textarea',
    '#title' => $this->t('Body'),
    '#default_value' => $mail_config->get('status_canceled.body'),
    '#rows' => 3,
  );

  return $form;
}