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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
*/
/**
* Editable Controller Behavior Class
*
* @author Johan Janssens <johan@nooku.org>
* @package Koowa_Controller
* @subpackage Behavior
*/
class KControllerBehaviorEditable extends KControllerBehaviorAbstract
{
protected $_cookie_path;
/**
* Constructor
*
* @param object An optional KConfig object with configuration options
*/
public function __construct(KConfig $config)
{
parent::__construct($config);
if ($this->isDispatched() && KRequest::type() == 'HTTP' && $this->getRequest()->format === 'html')
{
$this->registerCallback('before.read' , array($this, 'setReferrer'));
$this->registerCallback('after.apply' , array($this, 'lockReferrer'));
$this->registerCallback('after.read' , array($this, 'unlockReferrer'));
$this->registerCallback('after.save' , array($this, 'unsetReferrer'));
$this->registerCallback('after.cancel', array($this, 'unsetReferrer'));
}
$this->registerCallback('after.read' , array($this, 'lockResource'));
$this->registerCallback('after.save' , array($this, 'unlockResource'));
$this->registerCallback('after.cancel', array($this, 'unlockResource'));
//Set the default redirect.
$this->setRedirect(KRequest::referrer());
$this->_cookie_path = $config->cookie_path;
}
/**
* Initializes the options 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)
{
$config->append(array(
'cookie_path' => KRequest::base().'/'
));
parent::_initialize($config);
}
/**
* Lock the referrer from updates
*
* @return void
*/
public function lockReferrer()
{
setcookie('referrer_locked', 1, 0, $this->_cookie_path);
}
/**
* Unlock the referrer for updates
*
* @return void
*/
public function unlockReferrer()
{
setcookie('referrer_locked', null, 0, $this->_cookie_path);
}
/**
* Get the referrer
*
* @return KHttpUrl A KHttpUrl object.
*/
public function getReferrer()
{
$referrer = $this->getService('koowa:http.url',
array('url' => KRequest::get('cookie.referrer', 'url'))
);
return $referrer;
}
/**
* Set the referrer
*
* @return void
*/
public function setReferrer()
{
if(!KRequest::has('cookie.referrer_locked'))
{
$request = KRequest::url();
$referrer = KRequest::referrer();
//Compare request url and referrer
if(!isset($referrer) || ((string) $referrer == (string) $request))
{
$identifier = $this->getMixer()->getIdentifier();
$option = 'com_'.$identifier->package;
$view = KInflector::pluralize($identifier->name);
$url = 'index.php?option='.$option.'&view='.$view;
$referrer = $this->getService('koowa:http.url',array('url' => $url));
}
setcookie('referrer', (string) $referrer, 0, $this->_cookie_path);
}
}
/**
* Unset the referrer
*
* @return void
*/
public function unsetReferrer()
{
setcookie('referrer', null, 0, $this->_cookie_path);
}
/**
* Lock callback
*
* Only lock if the context contains a row object and the view layout is 'form'.
*
* @param KCommandContext The active command context
* @return void
*/
public function lockResource(KCommandContext $context)
{
if($context->result instanceof KDatabaseRowInterface)
{
$view = $this->getView();
if($view instanceof KViewTemplate)
{
if($view->getLayout() == 'form' && $context->result->isLockable()) {
$context->result->lock();
}
}
}
}
/**
* Unlock callback
*
* @param KCommandContext The active command context
* @return void
*/
public function unlockResource(KCommandContext $context)
{
if($context->result instanceof KDatabaseRowInterface && $context->result->isLockable()) {
$context->result->unlock();
}
}
/**
* Save action
*
* This function wraps around the edit or add action. If the model state is
* unique a edit action will be executed, if not unique an add action will be
* executed.
*
* This function also sets the redirect to the referrer.
*
* @param KCommandContext A command context object
* @return KDatabaseRow A row object containing the saved data
*/
protected function _actionSave(KCommandContext $context)
{
$action = $this->getModel()->getState()->isUnique() ? 'edit' : 'add';
$data = $context->caller->execute($action, $context);
//Create the redirect
$this->setRedirect($this->getReferrer());
return $data;
}
/**
* Apply action
*
* This function wraps around the edit or add action. If the model state is
* unique a edit action will be executed, if not unique an add action will be
* executed.
*
* This function also sets the redirect to the current url
*
* @param KCommandContext A command context object
* @return KDatabaseRow A row object containing the saved data
*/
protected function _actionApply(KCommandContext $context)
{
$action = $this->getModel()->getState()->isUnique() ? 'edit' : 'add';
$data = $context->caller->execute($action, $context);
//Create the redirect
$url = $this->getReferrer();
if ($data instanceof KDatabaseRowAbstract)
{
$url = clone KRequest::url();
if($this->getModel()->getState()->isUnique())
{
$states = $this->getModel()->getState()->getData(true);
foreach($states as $key => $value) {
$url->query[$key] = $data->get($key);
}
}
else $url->query[$data->getIdentityColumn()] = $data->get($data->getIdentityColumn());
}
$this->setRedirect($url);
return $data;
}
/**
* Cancel action
*
* This function will unlock the row(s) and set the redirect to the referrer
*
* @param KCommandContext A command context object
* @return KDatabaseRow A row object containing the data of the cancelled object
*/
protected function _actionCancel(KCommandContext $context)
{
//Create the redirect
$this->setRedirect($this->getReferrer());
$data = $context->caller->execute('read', $context);
return $data;
}
}
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