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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\View\Page\Layout;
use Magento\Framework\View\Layout;
/**
* Class Page layout reader
*/
class Reader
{
/**
* Merge cache suffix
*/
const MERGE_CACHE_SUFFIX = 'page_layout';
/**
* @var \Magento\Framework\View\Design\Theme\ResolverInterface
*/
protected $themeResolver;
/**
* @var \Magento\Framework\View\Layout\ProcessorFactory
*/
protected $processorFactory;
/**
* @var \Magento\Framework\View\File\CollectorInterface
*/
protected $pageLayoutFileSource;
/**
* @var \Magento\Framework\View\Layout\ProcessorInterface
*/
protected $pageLayoutMerge;
/**
* @var \Magento\Framework\View\Layout\ReaderPool
*/
protected $reader;
/**
* Constructor
*
* @param \Magento\Framework\View\Design\Theme\ResolverInterface $themeResolver
* @param \Magento\Framework\View\Layout\ProcessorFactory $processorFactory
* @param \Magento\Framework\View\File\CollectorInterface $pageLayoutFileSource
* @param \Magento\Framework\View\Layout\ReaderPool $reader
*/
public function __construct(
\Magento\Framework\View\Design\Theme\ResolverInterface $themeResolver,
\Magento\Framework\View\Layout\ProcessorFactory $processorFactory,
\Magento\Framework\View\File\CollectorInterface $pageLayoutFileSource,
\Magento\Framework\View\Layout\ReaderPool $reader
) {
$this->themeResolver = $themeResolver;
$this->processorFactory = $processorFactory;
$this->pageLayoutFileSource = $pageLayoutFileSource;
$this->reader = $reader;
}
/**
* Retrieve the layout update instance
*
* @return \Magento\Framework\View\Layout\ProcessorInterface
*/
protected function getPageLayoutMerge()
{
if ($this->pageLayoutMerge) {
return $this->pageLayoutMerge;
}
$this->pageLayoutMerge = $this->processorFactory->create([
'theme' => $this->themeResolver->get(),
'fileSource' => $this->pageLayoutFileSource,
'cacheSuffix' => self::MERGE_CACHE_SUFFIX,
]);
return $this->pageLayoutMerge;
}
/**
* Read page layout structure and fill reader context
*
* @param Layout\Reader\Context $readerContext
* @param string $pageLayout
* @return void
*/
public function read(Layout\Reader\Context $readerContext, $pageLayout)
{
$this->getPageLayoutMerge()->load($pageLayout);
$xml = $this->getPageLayoutMerge()->asSimplexml();
$this->reader->interpret($readerContext, $xml);
}
}