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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
declare(strict_types=1);
namespace Magento\Variable\Model\Config\Structure;
use Magento\Framework\App\ObjectManager;
use Magento\Framework\Config\ValidationStateInterface;
/**
* Filter dom structure to required components only
*/
class Dom extends \Magento\Framework\Config\Dom
{
/**
* @var AvailableVariables
*/
private $structureConfig;
/**
* @var array
*/
private $filters;
/**
* @param string $xml
* @param ValidationStateInterface $validationState
* @param array $idAttributes
* @param string $typeAttributeName
* @param string $schemaFile
* @param string $errorFormat
* @param AvailableVariables|null $availableVariables
*/
public function __construct(
$xml,
ValidationStateInterface $validationState,
array $idAttributes = [],
$typeAttributeName = null,
$schemaFile = null,
$errorFormat = self::ERROR_FORMAT_DEFAULT,
AvailableVariables $availableVariables = null
) {
$this->structureConfig = $availableVariables
?: ObjectManager::getInstance()->get(AvailableVariables::class);
parent::__construct($xml, $validationState, $idAttributes, $typeAttributeName, $schemaFile, $errorFormat);
}
/**
* @inheritdoc
*/
protected function _initDom($xml)
{
$dom = parent::_initDom($xml);
foreach (['tab', 'section', 'group', 'field'] as $element) {
$this->filterElements($dom, $element, $this->getElementFilters($element));
}
return $dom;
}
/**
* @inheritdoc
*/
public function merge($xml)
{
$dom = $this->_initDom($xml);
if ($dom->documentElement->getElementsByTagName('section')->length >0) {
$this->_mergeNode($dom->documentElement, '');
}
}
/**
* Filter DOMDocument elements and keep only allowed
*
* @param \DOMDocument $dom
* @param string $tag
* @param array $ids
*/
private function filterElements($dom, $tag, $ids)
{
$removeElements = [];
foreach ($dom->documentElement->getElementsByTagName($tag) as $removeElement) {
if (!in_array($removeElement->getAttribute('id'), $ids)) {
$removeElements[] = $removeElement;
}
}
foreach ($removeElements as $removeElement) {
$removeElement->parentNode->removeChild($removeElement);
}
}
/**
* Get allowed identifiers by element tag
*
* @param string $tag
* @return array|mixed
*/
private function getElementFilters($tag)
{
if (!isset($this->filters[$tag])) {
$configPaths = $this->structureConfig->getFlatConfigPaths();
$filterData = [];
foreach (array_keys($configPaths) as $path) {
list($section, $group, $field) = explode('/', $path);
$filterData['section'][] = $section;
$filterData['group'][] = $group;
$filterData['field'][] = $field;
}
$filterData['tab'] = [];
$this->filters = array_map('array_unique', $filterData);
}
return $this->filters[$tag] ?? [];
}
}