9.5/_site_language_accessor_trait_8php_source.html

<?php

declare(strict_types = 1);


namespace ‪TYPO3\CMS\Core\Routing\Aspect;


/*

 * 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\Context\LanguageAspect;

use ‪TYPO3\CMS\Core\Context\LanguageAspectFactory;

use ‪TYPO3\CMS\Core\Site\SiteLanguageAwareTrait;

use ‪TYPO3\CMS\Core\Utility\MathUtility;


trait ‪SiteLanguageAccessorTrait

{

    use ‪SiteLanguageAwareTrait;


    protected $languageAspect;


    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

            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];

    }


    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;

    }


    protected function getLanguageAspect(): ‪LanguageAspect

    {

        if ($this->languageAspect === null) {

            $this->languageAspect = ‪LanguageAspectFactory::createFromSiteLanguage($this->siteLanguage);

        }

        return $this->languageAspect;

    }

}