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<?php
/**
* @version $Id: menu.php 14401 2010-01-26 14:10:00Z louis $
* @package Joomla.Framework
* @subpackage Application
* @copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
* @license GNU/GPL, see LICENSE.php
* Joomla! is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/
// Check to ensure this file is within the rest of the framework
defined('JPATH_BASE') or die();
/**
* JMenu class
*
* @package Joomla.Framework
* @subpackage Application
* @since 1.5
*/
class JMenu extends JObject
{
/**
* Array to hold the menu items
*
* @access private
* @param array
*/
var $_items = array ();
/**
* Identifier of the default menu item
*
* @access private
* @param integer
*/
var $_default = 0;
/**
* Identifier of the active menu item
*
* @access private
* @param integer
*/
var $_active = 0;
/**
* Class constructor
*
* @access public
* @return boolean True on success
*/
function __construct($options = array())
{
$this->load(); //load the menu items
foreach ($this->_items as $k => $item)
{
if ($item->home) {
$this->_default = $item->id;
}
}
}
/**
* Returns a reference to a JMenu object
*
* This method must be invoked as:
* <pre> $menu = &JSite::getMenu();</pre>
*
* @access public
* @param string $client The name of the client
* @param array $options An associative array of options
* @return JMenu A menu object.
* @since 1.5
*/
function &getInstance($client, $options = array())
{
static $instances;
if (!isset( $instances )) {
$instances = array();
}
if (empty($instances[$client]))
{
//Load the router object
$info =& JApplicationHelper::getClientInfo($client, true);
$path = $info->path.DS.'includes'.DS.'menu.php';
if(file_exists($path))
{
require_once $path;
// Create a JPathway object
$classname = 'JMenu'.ucfirst($client);
$instance = new $classname($options);
}
else
{
//$error = JError::raiseError( 500, 'Unable to load menu: '.$client);
$error = null; //Jinx : need to fix this
return $error;
}
$instances[$client] = & $instance;
}
return $instances[$client];
}
/**
* Get menu item by id
*
* @access public
* @param int The item id
* @return mixed The item object, or null if not found
*/
function &getItem($id)
{
$result = null;
if (isset($this->_items[$id])) {
$result = &$this->_items[$id];
}
return $result;
}
/**
* Set the default item by id
*
* @param int The item id
* @access public
* @return True, if succesfull
*/
function setDefault($id)
{
if(isset($this->_items[$id])) {
$this->_default = $id;
return true;
}
return false;
}
/**
* Get menu item by id
*
* @access public
*
* @return object The item object
*/
function &getDefault()
{
$item =& $this->_items[$this->_default];
return $item;
}
/**
* Set the default item by id
*
* @param int The item id
* @access public
* @return If successfull the active item, otherwise null
*/
function &setActive($id)
{
if(isset($this->_items[$id]))
{
$this->_active = $id;
$result = &$this->_items[$id];
return $result;
}
$result = null;
return $result;
}
/**
* Get menu item by id
*
* @access public
*
* @return object The item object
*/
function &getActive()
{
if ($this->_active) {
$item =& $this->_items[$this->_active];
return $item;
}
$result = null;
return $result;
}
/**
* Gets menu items by attribute
*
* @access public
* @param string The field name
* @param string The value of the field
* @param boolean If true, only returns the first item found
* @return array
*/
function getItems($attribute, $value, $firstonly = false)
{
$items = null;
foreach ($this->_items as $item)
{
if ( ! is_object($item) )
continue;
if ($item->$attribute == $value)
{
if($firstonly) {
return $item;
}
$items[] = $item;
}
}
return $items;
}
/**
* Gets the parameter object for a certain menu item
*
* @access public
* @param int The item id
* @return object A JParameter object
*/
function &getParams($id)
{
$ini = '';
if ($menu =& $this->getItem($id)) {
$ini = $menu->params;
}
$result = new JParameter( $ini );
return $result;
}
/**
* Getter for the menu array
*
* @access public
* @return array
*/
function getMenu() {
return $this->_items;
}
/**
* Method to check JMenu object authorization against an access control
* object and optionally an access extension object
*
* @access public
* @param integer $id The menu id
* @param integer $accessid The users access identifier
* @return boolean True if authorized
*/
function authorize($id, $accessid = 0)
{
$menu =& $this->getItem($id);
return ((isset($menu->access) ? $menu->access : 0) <= $accessid);
}
/**
* Loads the menu items
*
* @abstract
* @access public
* @return array
*/
function load()
{
return array();
}
}