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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\View\Design\Theme;
/**
* Theme factory
*/
class FlyweightFactory
{
/**
* Theme provider
*
* @var ThemeProviderInterface
*/
protected $themeProvider;
/**
* Themes
*
* @var \Magento\Framework\View\Design\ThemeInterface[]
*/
protected $themes = [];
/**
* Themes by path
*
* @var \Magento\Framework\View\Design\ThemeInterface[]
*/
protected $themesByPath = [];
/**
* Constructor
*
* @param ThemeProviderInterface $themeProvider
*/
public function __construct(ThemeProviderInterface $themeProvider)
{
$this->themeProvider = $themeProvider;
}
/**
* Creates or returns a shared model of theme
*
* Search for theme in File System by specific path or load theme from DB
* by specific path (e.g. adminhtml/Magento/backend) or by identifier (theme primary key) and return it
* Can be used to deploy static or in other setup commands, even if Magento is not installed yet.
*
* @param string $themeKey Should looks like Magento/backend or should be theme primary key
* @param string $area Can be adminhtml, frontend, etc...
* @return \Magento\Framework\View\Design\ThemeInterface
* @throws \InvalidArgumentException when incorrect $themeKey was specified
* @throws \LogicException when theme with appropriate $themeKey was not found
*/
public function create($themeKey, $area = \Magento\Framework\View\DesignInterface::DEFAULT_AREA)
{
if (!is_numeric($themeKey) && !is_string($themeKey)) {
throw new \InvalidArgumentException('Incorrect theme identification key');
}
$themeKey = $this->extractThemeId($themeKey);
if (is_numeric($themeKey)) {
$themeModel = $this->_loadById($themeKey);
} else {
$themeModel = $this->_loadByPath($themeKey, $area);
}
if (!$themeModel->getCode()) {
throw new \LogicException("Unable to load theme by specified key: '{$themeKey}'");
}
$this->_addTheme($themeModel);
return $themeModel;
}
/**
* Attempt to determine a numeric theme ID from the specified path
*
* @param string $path
* @return string
*/
private function extractThemeId($path)
{
$dir = \Magento\Framework\View\DesignInterface::PUBLIC_THEME_DIR;
if (preg_match('/^' . preg_quote($dir, '/') . '(\d+)$/', $path, $matches)) {
return $matches[1];
}
return $path;
}
/**
* Load theme by id
*
* @param int $themeId
* @return \Magento\Framework\View\Design\ThemeInterface
*/
protected function _loadById($themeId)
{
if (isset($this->themes[$themeId])) {
return $this->themes[$themeId];
}
return $this->themeProvider->getThemeById($themeId);
}
/**
* Load theme by theme path
*
* @param string $themePath
* @param string $area
* @return \Magento\Framework\View\Design\ThemeInterface
*/
protected function _loadByPath($themePath, $area)
{
$fullPath = $area . \Magento\Framework\View\Design\ThemeInterface::PATH_SEPARATOR . $themePath;
if (isset($this->themesByPath[$fullPath])) {
return $this->themesByPath[$fullPath];
}
return $this->themeProvider->getThemeByFullPath($fullPath);
}
/**
* Add theme to shared collection
*
* @param \Magento\Framework\View\Design\ThemeInterface $themeModel
* @return $this
*/
protected function _addTheme(\Magento\Framework\View\Design\ThemeInterface $themeModel)
{
if ($themeModel->getId()) {
$this->themes[$themeModel->getId()] = $themeModel;
$themePath = $themeModel->getFullPath();
if ($themePath) {
$this->themesByPath[$themePath] = $themeModel;
}
}
return $this;
}
}