class.ilADTLocalizedTextFormBridge.php

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<?php

declare(strict_types=1);

class ilADTLocalizedTextFormBridge extends ilADTTextFormBridge
{
    protected function isValidADT(ilADT $a_adt): bool
    {
        return $a_adt instanceof ilADTLocalizedText;
    }

    public function addToForm(): void
    {
        $active_languages = $this->getADT()->getCopyOfDefinition()->getActiveLanguages();
        $multilingual_value_support = $this->getADT()->getCopyOfDefinition()->getMultilingualValueSupport();

        if (
            !count($active_languages) ||
            !$multilingual_value_support
        ) {

            $languages = $this->getADT()->getTranslations();
            $text = $languages[$this->getADT()->getCopyOfDefinition()->getDefaultLanguage()] ?? '';
            $this->addElementToForm(
                $this->getTitle(),
                $this->getElementId() . '_' . $this->getADT()->getCopyOfDefinition()->getDefaultLanguage(),
                $text,
                false,
                ''
            );
            return;
        }
        $is_translation = null;
        foreach ($active_languages as $active_language) {
            if (strcmp($active_language, $this->getADT()->getCopyOfDefinition()->getDefaultLanguage()) === 0) {
                $is_translation = false;
            } else {
                $is_translation = true;
            }

            $languages = $this->getADT()->getTranslations();

            $text = '';

            if (array_key_exists($active_language, $languages)) {
                $text = $languages[$active_language];
            }

            $this->addElementToForm(
                $this->getTitle(),
                $this->getElementId() . '_' . $active_language,
                $text,
                $is_translation,
                $active_language
            );
        }
    }

    public function importFromPost(): void
    {
        $multilingual_value_support = $this->getADT()->getCopyOfDefinition()->getMultilingualValueSupport();
        if (
            !$this->getADT()->getCopyOfDefinition()->supportsTranslations() ||
            !$multilingual_value_support
        ) {
            $language = $this->getADT()->getCopyOfDefinition()->getDefaultLanguage();
            $this->getADT()->setTranslation(
                $language,
                $this->getForm()->getInput($this->getElementId() . '_' . $language)
            );
            $this->getADT()->setText($this->getForm()->getInput($this->getElementId() . '_' . $language));
            $input_item = $this->getForm()->getItemByPostVar($this->getElementId() . '_' . $language);
            $input_item->setValue($this->getADT()->getTextForLanguage($language));
            return;
        }
        $active_languages = $this->getADT()->getCopyOfDefinition()->getActiveLanguages();
        foreach ($active_languages as $language) {
            $this->getADT()->setTranslation(
                $language,
                $this->getForm()->getInput($this->getElementId() . '_' . $language)
            );
            $this->getADT()->setText($this->getForm()->getInput($this->getElementId() . '_' . $language));
            $input_item = $this->getForm()->getItemByPostVar($this->getElementId() . '_' . $language);
            $input_item->setValue((string) $this->getADT()->getTranslations()[$language]);
        }
    }
}