<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\View;

use Magento\Framework\View\Asset\Repository;
use Magento\Framework\Config\ViewFactory;

/**
* Handles theme view.xml files
*/
class Config implements \Magento\Framework\View\ConfigInterface
{
/**
* List of view configuration objects per theme
*
* @var array
*/
protected $viewConfigs = [];

/**
* View service
*
* @var \Magento\Framework\View\Asset\Repository
*/
protected $assetRepo;

/**
* File view factory
*
* @var \Magento\Framework\Config\ViewFactory
*/
protected $viewConfigFactory;

/**
* Constructor
*
* @param Asset\Repository $assetRepo
* @param \Magento\Framework\Config\ViewFactory $viewConfigFactory
*/
public function __construct(
Repository $assetRepo,
ViewFactory $viewConfigFactory
) {
$this->assetRepo = $assetRepo;
$this->viewConfigFactory = $viewConfigFactory;
}

/**
* Render view config object for current package and theme
*
* @param array $params
* @return \Magento\Framework\Config\View
*/
public function getViewConfig(array $params = [])
{
$this->assetRepo->updateDesignParams($params);
$viewConfigParams = [];

if (isset($params['themeModel'])) {
/** @var \Magento\Framework\View\Design\ThemeInterface $currentTheme */
$currentTheme = $params['themeModel'];
$key = $currentTheme->getFullPath();
if (isset($this->viewConfigs[$key])) {
return $this->viewConfigs[$key];
}
$viewConfigParams['themeModel'] = $currentTheme;
}
$viewConfigParams['area'] = (isset($params['area'])) ? $params['area'] : null;

/** @var \Magento\Framework\Config\View $config */
$config = $this->viewConfigFactory->create($viewConfigParams);

if (isset($key)) {
$this->viewConfigs[$key] = $config;
}
return $config;
}
}