SwitchShortcutSet::buildForm

public SwitchShortcutSet::buildForm(array $form, FormStateInterface $form_state, UserInterface $user = NULL)

public function buildForm(array $form, FormStateInterface $form_state, UserInterface $user = NULL) {
  $account = $this->currentUser();

  $this->user = $user;

  // Prepare the list of shortcut sets.
  $options = array_map(function(ShortcutSet $set) {
    return $set->label();
  }, $this->shortcutSetStorage->loadMultiple());

  $current_set = shortcut_current_displayed_set($this->user);

  // Only administrators can add shortcut sets.
  $add_access = $account->hasPermission('administer shortcuts');
  if ($add_access) {
    $options['new'] = $this->t('New set');
  }

  $account_is_user = $this->user->id() == $account->id();
  if (count($options) > 1) {
    $form['set'] = array(
      '#type' => 'radios',
      '#title' => $account_is_user ? $this->t('Choose a set of shortcuts to use') : $this->t('Choose a set of shortcuts for this user'),
      '#options' => $options,
      '#default_value' => $current_set->id(),
    );

    $form['label'] = array(
      '#type' => 'textfield',
      '#title' => $this->t('Label'),
      '#description' => $this->t('The new set is created by copying items from your default shortcut set.'),
      '#access' => $add_access,
      '#states' => array(
        'visible' => array(
          ':input[name="set"]' => array('value' => 'new'),
        ),
        'required' => array(
          ':input[name="set"]' => array('value' => 'new'),
        ),
      ),
    );
    $form['id'] = array(
      '#type' => 'machine_name',
      '#machine_name' => array(
        'exists' => array($this, 'exists'),
        'replace_pattern' => '[^a-z0-9-]+',
        'replace' => '-',
      ),
      // This ID could be used for menu name.
      '#maxlength' => 23,
      '#states' => array(
        'required' => array(
          ':input[name="set"]' => array('value' => 'new'),
        ),
      ),
      '#required' => FALSE,
    );

    if (!$account_is_user) {
      $default_set = $this->shortcutSetStorage->getDefaultSet($this->user);
      $form['new']['#description'] = $this->t('The new set is created by copying items from the %default set.', array('%default' => $default_set->label()));
    }

    $form['actions'] = array('#type' => 'actions');
    $form['actions']['submit'] = array(
      '#type' => 'submit',
      '#value' => $this->t('Change set'),
    );
  }
  else {
    // There is only 1 option, so output a message in the $form array.
    $form['info'] = array(
      '#markup' => '<p>' . $this->t('You are currently using the %set-name shortcut set.', array('%set-name' => $current_set->label())) . '</p>',
    );
  }

  return $form;
}