Your IP : 216.73.216.220
<?php
declare(strict_types=1);
/*
* 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!
*/
namespace TYPO3\CMS\Core\Routing\Aspect;
use TYPO3\CMS\Core\Context\LanguageAspect;
use TYPO3\CMS\Core\Context\LanguageAspectFactory;
use TYPO3\CMS\Core\Site\SiteLanguageAwareTrait;
use TYPO3\CMS\Core\Utility\MathUtility;
trait SiteLanguageAccessorTrait
{
use SiteLanguageAwareTrait;
/**
* @var LanguageAspect
*/
protected $languageAspect;
/**
* Resolves one record out of given language fallbacks.
*/
protected function resolveLanguageFallback(array $results, ?string $languageFieldName, ?array $languageIds): ?array
{
if ($results === []) {
return null;
}
if ($languageFieldName === null || $languageIds === null) {
return $results[0];
}
usort(
$results,
// orders records by there occurrence in $languageFallbackIds
static function (array $a, array $b) use ($languageFieldName, $languageIds): int {
$languageA = (int)$a[$languageFieldName];
$languageB = (int)$b[$languageFieldName];
return array_search($languageA, $languageIds, true)
- array_search($languageB, $languageIds, true);
}
);
return $results[0];
}
/**
* Resolves all language ids that are relevant to retrieve the most specific variant of a record.
* The order of these ids defines the processing order concerning language fallback - most specific
* language comes first in this array.
*
* + "all language (-1)", most specific if present since there cannot be any localizations
* + "current language" most specific for the current given request context
* + "language fallbacks" falling back to language alternatives (might include "default language")
*
* @return int[]
*/
protected function resolveAllRelevantLanguageIds()
{
$languageIds = [-1, $this->siteLanguage->getLanguageId()];
foreach ($this->getLanguageAspect()->getFallbackChain() as $item) {
if (in_array($item, $languageIds, true) || !MathUtility::canBeInterpretedAsInteger($item)) {
continue;
}
$languageIds[] = (int)$item;
}
return $languageIds;
}
/**
* Provides LanguageAspect which contains the logic how fallbacks
* for a given context/overlay-mode shall be handled.
*
* @see LanguageAspectFactory::createFromSiteLanguage
*/
protected function getLanguageAspect(): LanguageAspect
{
if ($this->languageAspect === null) {
$this->languageAspect = LanguageAspectFactory::createFromSiteLanguage($this->siteLanguage);
}
return $this->languageAspect;
}
}