Viewing file:  ActionStack.php (6.94 KB) -rw-rw-rw-
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<?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.
*
* @category Zend
* @package Zend_Controller
* @subpackage Plugins
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/** Zend_Controller_Plugin_Abstract */
require_once 'Zend/Controller/Plugin/Abstract.php';
/** Zend_Registry */
require_once 'Zend/Registry.php';
/**
* Manage a stack of actions
*
* @uses Zend_Controller_Plugin_Abstract
* @category Zend
* @package Zend_Controller
* @subpackage Plugins
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: ActionStack.php 18951 2009-11-12 16:26:19Z alexander $
*/
class Zend_Controller_Plugin_ActionStack extends Zend_Controller_Plugin_Abstract
{
/** @var Zend_Registry */
protected $_registry;
/**
* Registry key under which actions are stored
* @var string
*/
protected $_registryKey = 'Zend_Controller_Plugin_ActionStack';
/**
* Valid keys for stack items
* @var array
*/
protected $_validKeys = array(
'module',
'controller',
'action',
'params'
);
/**
* Flag to determine whether request parameters are cleared between actions, or whether new parameters
* are added to existing request parameters.
*
* @var Bool
*/
protected $_clearRequestParams = false;
/**
* Constructor
*
* @param Zend_Registry $registry
* @param string $key
* @return void
*/
public function __construct(Zend_Registry $registry = null, $key = null)
{
if (null === $registry) {
$registry = Zend_Registry::getInstance();
}
$this->setRegistry($registry);
if (null !== $key) {
$this->setRegistryKey($key);
} else {
$key = $this->getRegistryKey();
}
$registry[$key] = array();
}
/**
* Set registry object
*
* @param Zend_Registry $registry
* @return Zend_Controller_Plugin_ActionStack
*/
public function setRegistry(Zend_Registry $registry)
{
$this->_registry = $registry;
return $this;
}
/**
* Retrieve registry object
*
* @return Zend_Registry
*/
public function getRegistry()
{
return $this->_registry;
}
/**
* Retrieve registry key
*
* @return string
*/
public function getRegistryKey()
{
return $this->_registryKey;
}
/**
* Set registry key
*
* @param string $key
* @return Zend_Controller_Plugin_ActionStack
*/
public function setRegistryKey($key)
{
$this->_registryKey = (string) $key;
return $this;
}
/**
* Set clearRequestParams flag
*
* @param bool $clearRequestParams
* @return Zend_Controller_Plugin_ActionStack
*/
public function setClearRequestParams($clearRequestParams)
{
$this->_clearRequestParams = (bool) $clearRequestParams;
return $this;
}
/**
* Retrieve clearRequestParams flag
*
* @return bool
*/
public function getClearRequestParams()
{
return $this->_clearRequestParams;
}
/**
* Retrieve action stack
*
* @return array
*/
public function getStack()
{
$registry = $this->getRegistry();
$stack = $registry[$this->getRegistryKey()];
return $stack;
}
/**
* Save stack to registry
*
* @param array $stack
* @return Zend_Controller_Plugin_ActionStack
*/
protected function _saveStack(array $stack)
{
$registry = $this->getRegistry();
$registry[$this->getRegistryKey()] = $stack;
return $this;
}
/**
* Push an item onto the stack
*
* @param Zend_Controller_Request_Abstract $next
* @return Zend_Controller_Plugin_ActionStack
*/
public function pushStack(Zend_Controller_Request_Abstract $next)
{
$stack = $this->getStack();
array_push($stack, $next);
return $this->_saveStack($stack);
}
/**
* Pop an item off the action stack
*
* @return false|Zend_Controller_Request_Abstract
*/
public function popStack()
{
$stack = $this->getStack();
if (0 == count($stack)) {
return false;
}
$next = array_pop($stack);
$this->_saveStack($stack);
if (!$next instanceof Zend_Controller_Request_Abstract) {
require_once 'Zend/Controller/Exception.php';
throw new Zend_Controller_Exception('ArrayStack should only contain request objects');
}
$action = $next->getActionName();
if (empty($action)) {
return $this->popStack($stack);
}
$request = $this->getRequest();
$controller = $next->getControllerName();
if (empty($controller)) {
$next->setControllerName($request->getControllerName());
}
$module = $next->getModuleName();
if (empty($module)) {
$next->setModuleName($request->getModuleName());
}
return $next;
}
/**
* postDispatch() plugin hook -- check for actions in stack, and dispatch if any found
*
* @param Zend_Controller_Request_Abstract $request
* @return void
*/
public function postDispatch(Zend_Controller_Request_Abstract $request)
{
// Don't move on to next request if this is already an attempt to
// forward
if (!$request->isDispatched()) {
return;
}
$this->setRequest($request);
$stack = $this->getStack();
if (empty($stack)) {
return;
}
$next = $this->popStack();
if (!$next) {
return;
}
$this->forward($next);
}
/**
* Forward request with next action
*
* @param array $next
* @return void
*/
public function forward(Zend_Controller_Request_Abstract $next)
{
$request = $this->getRequest();
if ($this->getClearRequestParams()) {
$request->clearParams();
}
$request->setModuleName($next->getModuleName())
->setControllerName($next->getControllerName())
->setActionName($next->getActionName())
->setParams($next->getParams())
->setDispatched(false);
}
}
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