<?php
/**
 * For the full copyright and license information, please view the
 * docs/licenses/LICENSE.txt file that was distributed with this source code.
 */

namespace PrestaShopBundle\Form\Extension;

use Symfony\Component\Form\AbstractTypeExtension;
use Symfony\Component\Form\Extension\Core\Type\FormType;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\Form\FormView;
use Symfony\Component\OptionsResolver\OptionsResolver;

/**
 * Class HelpTextExtension extends every form type with additional help text options.
 */
class HelpTextExtension extends AbstractTypeExtension
{
    /**
     * {@inheritdoc}
     */
    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver
            ->setDefaults([
                'help' => null,
            ])
            ->setAllowedTypes('help', ['null', 'string'])
        ;
    }

    /**
     * {@inheritdoc}
     */
    public function buildView(FormView $view, FormInterface $form, array $options)
    {
        $view->vars['help'] = $options['help'] ?? null;
    }

    /**
     * {@inheritdoc}
     */
    public static function getExtendedTypes(): iterable
    {
        return [FormType::class];
    }
}