List Sub Pages Widget

/* ----------------------------------
    WIDGET: LIST SUB PAGES OR SIBLINGS
    IF HAS A PARENT WITH SUB PAGES.
---------------------------------- */
class CAOASubPages extends WP_Widget {
  function CAOASubPages() {
    $options = array('classname' => 'widget-sub-pages', 'description' => 'Get a list of the sub pages from the current page.');
    parent::WP_Widget(false, $name = 'List Sub Pages of Current Page', $options);
  }

  function widget($args){
    global $post;
    extract($args);

    if($post->post_parent):
      $ancestors=get_post_ancestors($post->ID);
      $root=count($ancestors)-1;
      $postID = $ancestors[$root];
    else:
      $postID = $post->ID;
    endif;

    $wlp_args = array(
      'child_of' => $postID,
      'title_li' => __('<div class="title">'.get_the_title($post->post_parent).'</div>'),
      'echo' => 0,
    );
    $wp_list_pages = wp_list_pages($wlp_args);

    if($wp_list_pages):
      print $before_widget;
      print '<ul>';
      print $wp_list_pages;
      print '</ul>';
      print $after_widget;
    endif;
  }
}

add_action('widgets_init', create_function('', 'return register_widget("CAOASubPages");'));