/**
  * create an instance of Sitemap_Base using sitemap
  *
  * @return void
  * @author Andy Bennett
  */
 public static function instance()
 {
     if (self::$instance == NULL) {
         self::$instance = Sitemap_Base::factory('sitemap');
     }
     return self::$instance;
 }
 public static function getInstance()
 {
     if (!self::$instance && !is_object(self::$instance)) {
         self::$instance = new self();
     }
     return self::$instance;
 }
 /**
  * get a list of pages
  *
  * @return void
  * @author Andy Bennett
  */
 public function get_pages()
 {
     $map = Sitemap::instance()->get_sitemap();
     $pages = $map->xpath('/root//item');
     $arr = array();
     foreach ($pages as $page) {
         $tmp = new stdClass();
         $tmp->id = (string) $page->name;
         $tmp->title = (string) $page->title;
         $arr[] = $tmp;
     }
     return $arr;
 }
    /**
     * simple test to show navigation
     *
     * @return void
     * @author Andy Bennett
     */
    public function index()
    {
        echo '<style type="text/css" media="screen">
			    ul { clear: left; background: #ccc; height: 30px; }
			    li { list-style: none; float: left; line-height: 30px; height: 30px; }
			    li.current { background: white; color: red; }
			    li span { margin-top: 5px; display: block; border-right: 1px solid red; line-height: 16px; padding: 2px 1em; }
			    li.last span { border-right: none; }
			    li a { color: black; text-decoration: none; }
			    li a:hover { text-decoration: underline; }
			</style>';
        echo Sitemap::instance()->navigation(2, 0);
    }
 function index()
 {
     Sitemap::instance()->google();
 }
 /**
  * pass the edited tree to the sitemap to be saved
  *
  * @return void
  * @author Andy Bennett
  */
 public function save()
 {
     $tree = Input::instance()->post('tree');
     $xml_string = tree_helper::return_xml_string($tree);
     echo Sitemap::instance()->save_sitemap($xml_string) ? 'Saved successfully' : 0;
 }