<?php
/**
 * @package     Joomla.Libraries
 * @subpackage  Component
 *
 * @copyright   Copyright (C) 2005 - 2015 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE
 */

defined('JPATH_PLATFORM') or die;

/**
 * Component routing interface
 *
 * @since  3.3
 */
interface JComponentRouterInterface
{
	/**
	 * Prepare-method for URLs
	 * This method is meant to validate and complete the URL parameters.
	 * For example it can add the Itemid or set a language parameter.
	 * This method is executed on each URL, regardless of SEF mode switched
	 * on or not.
	 *
	 * @param   array  $query  An associative array of URL arguments
	 *
	 * @return  array  The URL arguments to use to assemble the subsequent URL.
	 *
	 * @since   3.3
	 */
	public function preprocess($query);

	/**
	 * Build method for URLs
	 * This method is meant to transform the query parameters into a more human
	 * readable form. It is only executed when SEF mode is switched on.
	 *
	 * @param   array  &$query  An array of URL arguments
	 *
	 * @return  array  The URL arguments to use to assemble the subsequent URL.
	 *
	 * @since   3.3
	 */
	public function build(&$query);

	/**
	 * Parse method for URLs
	 * This method is meant to transform the human readable URL back into
	 * query parameters. It is only executed when SEF mode is switched on.
	 *
	 * @param   array  &$segments  The segments of the URL to parse.
	 *
	 * @return  array  The URL attributes to be used by the application.
	 *
	 * @since   3.3
	 */
	public function parse(&$segments);
}