MetaTagManagerRegistry.php

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<?php
declare(strict_types = 1);
 
namespace ‪TYPO3\CMS\Core\MetaTag;
 
/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */
 
use ‪TYPO3\CMS\Core\Service\DependencyOrderingService;
use ‪TYPO3\CMS\Core\SingletonInterface;
use ‪TYPO3\CMS\Core\Utility\GeneralUtility;
 
class ‪MetaTagManagerRegistry implements ‪SingletonInterface
{
    protected ‪$registry = [];
    private ‪$instances = [];
    private ‪$managers;
 
    public function ‪__construct()
    {
        $this->registry['generic'] = [
            'module' => GenericMetaTagManager::class
        ];
    }
 
    public function ‪registerManager(string $name, string $className, array $before = ['generic'], array $after = [])
    {
        if (!count($before)) {
            $before[] = 'generic';
        }
 
        $this->registry[$name] = [
            'module' => $className,
            'before' => $before,
            'after' => $after
        ];
        $this->managers = null;
    }
 
    public function ‪getManagerForProperty(string $property): ‪MetaTagManagerInterface
    {
        $property = strtolower($property);
        foreach ($this->‪getAllManagers() as $manager) {
            if ($manager->canHandleProperty($property)) {
                return $manager;
            }
        }
 
        // Just a fallback because the GenericMetaTagManager is also registered in the list of MetaTagManagers
        return GeneralUtility::makeInstance(GenericMetaTagManager::class);
    }
 
    public function ‪getAllManagers(): array
    {
        if ($this->managers !== null) {
            return ‪$this->managers;
        }
 
        $orderedManagers = GeneralUtility::makeInstance(DependencyOrderingService::class)->orderByDependencies(
            $this->registry
        );
 
        $this->managers = [];
        foreach ($orderedManagers as $manager => $managerConfiguration) {
            $module = $managerConfiguration['module'];
            if (class_exists($module)) {
                $this->instances[$module] = $this->instances[$module] ?? GeneralUtility::makeInstance($module);
                $this->managers[$manager] = $this->instances[$module];
            }
        }
 
        return ‪$this->managers;
    }
 
    public function ‪removeAllManagers()
    {
        $this->registry = [];
        $this->managers = null;
    }
}