<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @package    Zend_Controller
 * @subpackage Router
 * @copyright  Copyright (c) 2006 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */ 


/** Zend_Controller_Router_Exception */
require_once 'Zend/Controller/Router/Exception.php';

/** Zend_Controller_Request_Abstract */
require_once 'Zend/Controller/Request/Abstract.php';

/**
 * @package    Zend_Controller
 * @subpackage Router
 * @copyright  Copyright (c) 2006 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
interface Zend_Controller_Router_Interface
{
    /**
     * Processes a request and sets its controller and action.  If
     * no route was possible, an exception is thrown.
     *
     * @param  Zend_Controller_Request_Abstract
     * @throws Zend_Controller_Router_Exception
     * @return Zend_Controller_Request_Abstract|boolean
     */
    public function route(Zend_Controller_Request_Abstract $dispatcher);

    /**
     * Add or modify a parameter with which to instantiate any helper objects
     * 
     * @param string $name 
     * @param mixed $param 
     * @return Zend_Controller_Router_Interface
     */
    public function setParam($name, $value);

    /**
     * Set an array of a parameters to pass to helper object constructors
     * 
     * @param array $params 
     * @return Zend_Controller_Router_Interface
     */
    public function setParams(array $params);

    /**
     * Retrieve a single parameter from the controller parameter stack
     * 
     * @param string $name 
     * @return mixed
     */
    public function getParam($name);

    /**
     * Retrieve the parameters to pass to helper object constructors
     * 
     * @return array
     */
    public function getParams();

    /**
     * Clear the controller parameter stack
     *
     * By default, clears all parameters. If a parameter name is given, clears 
     * only that parameter; if an array of parameter names is provided, clears 
     * each.
     * 
     * @param null|string|array single key or array of keys for params to clear
     * @return Zend_Controller_Router_Interface
     */
    public function clearParams($name = null);
}
