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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Catalog\Model\Layer;
use Magento\Catalog\Model\Layer\Filter\Item;
use Magento\Framework\Exception\LocalizedException;
use Magento\Framework\DataObject;
/**
* Layered navigation state model
*
* @api
* @author Magento Core Team <core@magentocommerce.com>
* @since 100.0.2
*/
class State extends DataObject
{
/**
* Add filter item to layer state
*
* @param Item $filter
* @return $this
*/
public function addFilter($filter)
{
$filters = $this->getFilters();
$filters[] = $filter;
$this->setFilters($filters);
return $this;
}
/**
* Set layer state filter items
*
* @param Item[] $filters
* @return $this
* @throws LocalizedException
*/
public function setFilters($filters)
{
if (!is_array($filters)) {
throw new LocalizedException(__('The filters are invalid. Set them in an array and try again.'));
}
$this->setData('filters', $filters);
return $this;
}
/**
* Get applied to layer filter items
*
* @return Item[]
*/
public function getFilters()
{
$filters = $this->getData('filters');
if ($filters === null) {
$filters = [];
$this->setData('filters', $filters);
}
return $filters;
}
}