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ColorType.php
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ColorType.php
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Form\Extension\Core\Type;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Form\FormError;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Symfony\Contracts\Translation\TranslatorInterface;
class ColorType extends AbstractType
{
/**
* @see https://www.w3.org/TR/html52/sec-forms.html#color-state-typecolor
*/
private const HTML5_PATTERN = '/^#[0-9a-f]{6}$/i';
private ?TranslatorInterface $translator;
public function __construct(?TranslatorInterface $translator = null)
{
$this->translator = $translator;
}
/**
* @return void
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
if (!$options['html5']) {
return;
}
$translator = $this->translator;
$builder->addEventListener(FormEvents::PRE_SUBMIT, static function (FormEvent $event) use ($translator): void {
$value = $event->getData();
if (null === $value || '' === $value) {
return;
}
if (\is_string($value) && preg_match(self::HTML5_PATTERN, $value)) {
return;
}
$messageTemplate = 'This value is not a valid HTML5 color.';
$messageParameters = [
'{{ value }}' => \is_scalar($value) ? (string) $value : \gettype($value),
];
$message = $translator?->trans($messageTemplate, $messageParameters, 'validators') ?? $messageTemplate;
$event->getForm()->addError(new FormError($message, $messageTemplate, $messageParameters));
});
}
/**
* @return void
*/
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults([
'html5' => false,
'invalid_message' => 'Please select a valid color.',
]);
$resolver->setAllowedTypes('html5', 'bool');
}
public function getParent(): ?string
{
return TextType::class;
}
public function getBlockPrefix(): string
{
return 'color';
}
}