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<?php
/**
* @version $Id$
* @package Koowa_Controller
* @subpackage Command
* @copyright Copyright (C) 2007 - 2012 Johan Janssens. All rights reserved.
* @license GNU GPLv3 <http://www.gnu.org/licenses/gpl.html>
* @link http://www.nooku.org
*/
/**
* Controller Executable Behavior Class
*
* @author Johan Janssens <johan@nooku.org>
* @package Koowa_Controller
* @subpackage Behavior
*/
class KControllerBehaviorExecutable extends KControllerBehaviorAbstract
{
/**
* The read-only state of the behavior
*
* @var boolean
*/
protected $_readonly;
/**
* Constructor.
*
* @param object An optional KConfig object with configuration options
*/
public function __construct( KConfig $config)
{
parent::__construct($config);
$this->_readonly = (bool) $config->readonly;
}
/**
* Initializes the default configuration for the object
*
* Called from {@link __construct()} as a first step of object instantiation.
*
* @param object An optional KConfig object with configuration options.
* @return void
*/
protected function _initialize(KConfig $config)
{
$config->append(array(
'priority' => KCommand::PRIORITY_HIGH,
'readonly' => false,
'auto_mixin' => true
));
parent::_initialize($config);
}
/**
* Command handler
*
* Only handles before.action commands to check ACL rules.
*
* @param string The command name
* @param object The command context
* @return boolean Can return both true or false.
* @throws KControllerException
*/
public function execute( $name, KCommandContext $context)
{
$parts = explode('.', $name);
if($parts[0] == 'before')
{
$action = $parts[1];
//Check if the action exists
if(!in_array($action, $context->caller->getActions()))
{
$context->setError(new KControllerException(
'Action '.ucfirst($action).' Not Implemented', KHttpResponse::NOT_IMPLEMENTED
));
$context->header = array('Allow' => $context->caller->execute('options', $context));
return false;
}
//Check if the action can be executed
$method = 'can'.ucfirst($action);
if(method_exists($this, $method))
{
if($this->$method() === false)
{
if($context->action != 'options')
{
$context->setError(new KControllerException(
'Action '.ucfirst($action).' Not Allowed', KHttpResponse::METHOD_NOT_ALLOWED
));
$context->header = array('Allow' => $context->caller->execute('options', $context));
}
return false;
}
}
}
return true;
}
/**
* Get an object handle
*
* Force the object to be enqueue in the command chain.
*
* @return string A string that is unique, or NULL
* @see execute()
*/
public function getHandle()
{
return KMixinAbstract::getHandle();
}
/**
* Set the readonly state of the behavior
*
* @param boolean
* @return KControllerBehaviorExecutable
*/
public function setReadOnly($readonly)
{
$this->_readonly = (bool) $readonly;
return $this;
}
/**
* Get the readonly state of the behavior
*
* @return boolean
*/
public function isReadOnly()
{
return $this->_readonly;
}
/**
* Generic authorize handler for controller browse actions
*
* @return boolean Can return both true or false.
*/
public function canBrowse()
{
return true;
}
/**
* Generic authorize handler for controller read actions
*
* @return boolean Can return both true or false.
*/
public function canRead()
{
return true;
}
/**
* Generic authorize handler for controller edit actions
*
* @return boolean Can return both true or false.
*/
public function canEdit()
{
return !$this->_readonly;
}
/**
* Generic authorize handler for controller add actions
*
* @return boolean Can return both true or false.
*/
public function canAdd()
{
return !$this->_readonly;
}
/**
* Generic authorize handler for controller delete actions
*
* @return boolean Can return both true or false.
*/
public function canDelete()
{
return !$this->_readonly;
}
}
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