LanguageSelectionForm.php

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<?php
namespace TYPO3\CMS\Lang\Domain\Model;
class LanguageSelectionForm extends \TYPO3\CMS\Extbase\DomainObject\AbstractEntity {

    protected $languages = array();

    protected $selectedLanguages = array();

    public function setLanguages(array $languages) {
        $this->languages = $languages;
    }

    public function getLanguages() {
        return $this->languages;
    }

    public function setSelectedLanguages(array $selectedLanguages) {
        $this->selectedLanguages = array_values(array_filter($selectedLanguages));
    }

    public function getSelectedLanguages() {
        return $this->selectedLanguages;
    }

    public function getSelectedLanguagesLocaleList() {
        if (!empty($this->selectedLanguages) && is_array($this->selectedLanguages)) {
            $locales = array();
            foreach ($this->selectedLanguages as $language) {
                $locales[] = $language->getLocale();
            }

            return implode(',', $locales);
        }
        return '';
    }

}