TermTranslationHandler.php

<?php

namespace Drupal\taxonomy;

use Drupal\Core\Entity\EntityInterface;
use Drupal\content_translation\ContentTranslationHandler;
use Drupal\Core\Form\FormStateInterface;

/**
 * Defines the translation handler for terms.
 */
class TermTranslationHandler extends ContentTranslationHandler {
    
    /**
     * {@inheritdoc}
     */
    public function entityFormAlter(array &$form, FormStateInterface $form_state, EntityInterface $entity) {
        parent::entityFormAlter($form, $form_state, $entity);
        $form['content_translation']['status']['#access'] = !isset($form['content_translation']);
        $form['actions']['submit']['#submit'][] = [
            $this,
            'entityFormSave',
        ];
    }
    
    /**
     * Form submission handler for TermTranslationHandler::entityFormAlter().
     *
     * This handles the save action.
     *
     * @see \Drupal\Core\Entity\EntityForm::build()
     */
    public function entityFormSave(array $form, FormStateInterface $form_state) {
        if ($this->getSourceLangcode($form_state)) {
            $entity = $form_state->getFormObject()
                ->getEntity();
            // We need a redirect here, otherwise we would get an access denied page,
            // since the current URL would be preserved and we would try to add a
            // translation for a language that already has a translation.
            $form_state->setRedirectUrl($entity->toUrl('edit-form'));
        }
    }
    
    /**
     * {@inheritdoc}
     */
    public function entityFormEntityBuild($entity_type, EntityInterface $entity, array $form, FormStateInterface $form_state) {
        if ($form_state->hasValue('content_translation')) {
            $translation =& $form_state->getValue('content_translation');
            $translation['status'] = $entity->isPublished();
        }
        parent::entityFormEntityBuild($entity_type, $entity, $form, $form_state);
    }

}