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<?php
/**
* Pimcore
*
* This source file is available under two different licenses:
* - GNU General Public License version 3 (GPLv3)
* - Pimcore Enterprise License (PEL)
* Full copyright and license information is available in
* LICENSE.md which is distributed with this source code.
*
* @copyright Copyright (c) Pimcore GmbH (http://www.pimcore.org)
* @license http://www.pimcore.org/license GPLv3 and PEL
*/
/**
* ----------------------------------------------------------------------------------
* based on @author ZF1 Zend_View_Helper_Placeholder_Registry
* ----------------------------------------------------------------------------------
*/
/**
* 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.
*
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Pimcore\Templating\Helper\Placeholder;
use Pimcore\Event\DocumentEvents;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
/**
* Registry for placeholder containers
*/
class ContainerService
{
/**
* @var EventDispatcherInterface
*/
private $eventDispatcher;
/**
* @var int
*/
private $currentIndex = 0;
/**
* Placeholder containers
*
* @var array
*/
protected $_items = [];
public function __construct()
{
$this->_items[$this->currentIndex] = [];
}
/**
* TODO Pimcore 6 set event dispatcher as constructor parameter
*
* @internal
* @required
*
* @param EventDispatcherInterface $eventDispatcher
*/
public function setEventDispatcher(EventDispatcherInterface $eventDispatcher)
{
$this->eventDispatcher = $eventDispatcher;
// lazily add event listeners - these listeners are only added if the container service is actually built
// when rendering a new document, the index is pushed to create a new, empty context
$eventDispatcher->addListener(DocumentEvents::RENDERER_PRE_RENDER, [$this, 'pushIndex']);
$eventDispatcher->addListener(DocumentEvents::RENDERER_POST_RENDER, [$this, 'popIndex']);
}
public function pushIndex()
{
++$this->currentIndex;
if (isset($this->_items[$this->currentIndex])) {
throw new \RuntimeException(sprintf('Items at index %d already exist', $this->currentIndex));
}
$this->_items[$this->currentIndex] = [];
}
public function popIndex()
{
if (0 === $this->currentIndex) {
throw new \OutOfBoundsException('Current index is already at 0');
}
if (isset($this->_items[$this->currentIndex])) {
unset($this->_items[$this->currentIndex]);
}
--$this->currentIndex;
}
/**
* createContainer
*
* @param string $key
* @param array $value
*
* @return Container
*/
public function createContainer($key, array $value = [])
{
$key = (string) $key;
$this->_items[$this->currentIndex][$key] = new Container($value);
return $this->_items[$this->currentIndex][$key];
}
/**
* Retrieve a placeholder container
*
* @param string $key
*
* @return Container
*/
public function getContainer($key)
{
$key = (string) $key;
if (isset($this->_items[$this->currentIndex][$key])) {
return $this->_items[$this->currentIndex][$key];
}
$container = $this->createContainer($key);
return $container;
}
/**
* Does a particular container exist?
*
* @param string $key
*
* @return bool
*/
public function containerExists($key)
{
$key = (string) $key;
$return = array_key_exists($key, $this->_items[$this->currentIndex]);
return $return;
}
/**
* Set the container for an item in the registry
*
* @param string $key
* @param Container $container
*
* @return ContainerService
*/
public function setContainer($key, Container $container)
{
$key = (string) $key;
$this->_items[$this->currentIndex][$key] = $container;
return $this;
}
/**
* Delete a container
*
* @param string $key
*
* @return bool
*/
public function deleteContainer($key)
{
$key = (string) $key;
if (isset($this->_items[$this->currentIndex][$key])) {
unset($this->_items[$this->currentIndex][$key]);
return true;
}
return false;
}
}

pimcore/lib/Pimcore/Templating/Helper/Placeholder/ContainerService.php line 99