Добавляем поддержку Token'ов в настройки Panel Pane

/**
 * Plugins are described by creating a $plugin array which will be used
 * by the system that includes this file.
 */
$plugin = array(
  'single' => TRUE,
  'title' => t('Deal Participant'),
  'description' => t('Participant information.'),
  'render callback' => 'gm_deal_participant_content_type_render',
  'required context' => new ctools_context_required(t('Node'), 'node'),
  'edit form' => 'gm_deal_participant_content_type_edit_form',
  'category' => t('GM Deal'),
);

/**
 * Panel pane settings form.
 *
 * @param $form
 * @param $form_state
 */
function gm_deal_participant_content_type_edit_form($form, &$form_state) {
  $conf = $form_state['conf'];
 
  $form['uid'] = array(
    '#type' => 'textfield',
    '#title' => t('User ID'),
    '#description' => t('Tokens are supported.'),
    '#default_value' => isset($conf['uid']) ? $conf['uid'] : NULL,
  );
 
  return $form;
}
 
/**
 * Submit callback for panel form settings.
 *
 * @param $form
 * @param $form_state
 */
function gm_deal_participant_content_type_edit_form_submit($form, &$form_state) {
  $form_state['conf'] = array(
    'uid' => $form_state['values']['uid'],
  );
}

/**
 * Panel pane render.
 *
 * @param $subtype
 * @param $conf
 * @param $args
 * @param $context
 * @return null|stdClass
 */
function gm_deal_participant_content_type_render($subtype, $conf, $args, $context) {
  if (empty($context) || empty($conf['uid'])) {
    return NULL;
  }
 
  // Добавляем возможность использования Token.
  // Сформируем параметры в нужном формате и передадим на вход функции замены токенов.
  $contexts = new stdClass();
  $contexts->{$context->id} = $context;
  $uid = ctools_context_keyword_substitute($conf['uid'], array(), $contexts);
 
  $user_obj = user_load($uid);
 
  $block = new stdClass();
  $block->content = 'Hello, world!';
  return $block;
}