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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\View\Layout\Reader\Visibility;
use Magento\Framework\Data\Argument\InterpreterInterface;
use Magento\Framework\Simplexml\Element;
use Magento\Framework\View\Layout\AclCondition;
use Magento\Framework\View\Layout\Argument\Parser;
use Magento\Framework\View\Layout\ConfigCondition;
/**
* Parse conditions from element.
*/
class Condition
{
/**
* Supported subtypes for visibility conditions.
*/
const TYPE_ARGUMENTS = 'arguments';
/**
* @var Parser
*/
private $argumentParser;
/**
* @var InterpreterInterface
*/
private $argumentInterpreter;
/**
* @param Parser $argumentParser
* @param InterpreterInterface $argumentInterpreter
*/
public function __construct(
Parser $argumentParser,
InterpreterInterface $argumentInterpreter
) {
$this->argumentParser = $argumentParser;
$this->argumentInterpreter = $argumentInterpreter;
}
/**
* @param Element $element
*
* @return array
*/
public function parseConditions(Element $element)
{
$visibilityConditions = [];
$configPath = (string)$element->getAttribute('ifconfig');
if (!empty($configPath)) {
$visibilityConditions['ifconfig'] = [
'name' => ConfigCondition::class,
'arguments' => [
'configPath' => $configPath
],
];
}
$aclResource = (string)$element->getAttribute('aclResource');
if (!empty($aclResource)) {
$visibilityConditions['acl'] = [
'name' => AclCondition::class,
'arguments' => [
'acl' => $aclResource
],
];
}
/** @var $childElement Element */
foreach ($element as $childElement) {
if ($childElement->getName() === 'visibilityCondition') {
$visibilityConditions[$childElement->getAttribute('name')] = [
'name' => $childElement->getAttribute('className'),
'arguments' => $this->evaluateArguments($childElement),
];
}
}
return $visibilityConditions;
}
/**
* Compute argument values
*
* @param Element $blockElement
* @return array
*/
private function evaluateArguments(Element $blockElement)
{
$argumentsData = [];
$arguments = $this->getArguments($blockElement);
foreach ($arguments as $argumentName => $argumentData) {
if (isset($argumentData['updater'])) {
continue;
}
$result = $this->argumentInterpreter->evaluate($argumentData);
if (is_array($result)) {
$argumentsData[$argumentName] = isset($argumentsData[$argumentName])
? array_replace_recursive($argumentsData[$argumentName], $result)
: $result;
} else {
$argumentsData[$argumentName] = $result;
}
}
return $argumentsData;
}
/**
* @param Element $element
*
* @return array
*/
private function getArguments(Element $element)
{
$arguments = $this->getElementsByType($element, self::TYPE_ARGUMENTS);
// We have only one declaration of <arguments> node in block or its reference
$argumentElement = reset($arguments);
return $argumentElement ? $this->parseArguments($argumentElement) : [];
}
/**
* Get elements by type
*
* @param Element $element
* @param string $type
* @return array
*/
private function getElementsByType(Element $element, $type)
{
$elements = [];
/** @var $childElement Element */
foreach ($element as $childElement) {
if ($childElement->getName() === $type) {
$elements[] = $childElement;
}
}
return $elements;
}
/**
* Parse argument nodes and return their array representation
*
* @param Element $node
* @return array
*/
private function parseArguments(Element $node)
{
$nodeDom = dom_import_simplexml($node);
$result = [];
foreach ($nodeDom->childNodes as $argumentNode) {
if ($argumentNode instanceof \DOMElement && $argumentNode->nodeName == 'argument') {
$argumentName = $argumentNode->getAttribute('name');
$result[$argumentName] = $this->argumentParser->parse($argumentNode);
}
}
return $result;
}
}