<?php

class App_Admin_Auth extends Qs_Auth
{
    protected static $_instance; 
    protected $_sessionNamespace = 'admin_auth';
    protected $_defaultBackAlias = 'admin';
    protected $_loginPageQuery = array(null, array('type' => 'Admin_Login_'));
    
    public static function getInstance()
    {
        if (null === self::$_instance) {
            self::$_instance = new self();
        }
        return self::$_instance;
    }
    
    public function getSuMode()
    {
        return (bool) $this->getSessionValue('suModeEnabled');
    }
    
    public function setSuMode($flag = true)
    {
        $this->setSessionValue('suModeEnabled', (bool)$flag);
    }
}