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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\ChoiceList\Loader\CallbackChoiceLoader;
use Symfony\Component\Form\ChoiceList\Loader\IntlCallbackChoiceLoader;
use Symfony\Component\Form\Exception\LogicException;
use Symfony\Component\Form\Extension\Core\DataTransformer\DateTimeZoneToStringTransformer;
use Symfony\Component\Form\Extension\Core\DataTransformer\IntlTimeZoneToStringTransformer;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Intl\Timezones;
use Symfony\Component\OptionsResolver\Options;
use Symfony\Component\OptionsResolver\OptionsResolver;
class TimezoneType extends AbstractType
{
/**
* {@inheritdoc}
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
if ('datetimezone' === $options['input']) {
$builder->addModelTransformer(new DateTimeZoneToStringTransformer($options['multiple']));
} elseif ('intltimezone' === $options['input']) {
$builder->addModelTransformer(new IntlTimeZoneToStringTransformer($options['multiple']));
}
}
/**
* {@inheritdoc}
*/
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults([
'intl' => false,
'choice_loader' => function (Options $options) {
$input = $options['input'];
if ($options['intl']) {
$choiceTranslationLocale = $options['choice_translation_locale'];
return new IntlCallbackChoiceLoader(function () use ($input, $choiceTranslationLocale) {
return self::getIntlTimezones($input, $choiceTranslationLocale);
});
}
$regions = $options->offsetGet('regions', false);
return new CallbackChoiceLoader(function () use ($regions, $input) {
return self::getPhpTimezones($regions, $input);
});
},
'choice_translation_domain' => false,
'choice_translation_locale' => null,
'input' => 'string',
'regions' => \DateTimeZone::ALL,
]);
$resolver->setAllowedTypes('intl', ['bool']);
$resolver->setAllowedTypes('choice_translation_locale', ['null', 'string']);
$resolver->setNormalizer('choice_translation_locale', function (Options $options, $value) {
if (null !== $value && !$options['intl']) {
throw new LogicException('The "choice_translation_locale" option can only be used if the "intl" option is set to true.');
}
return $value;
});
$resolver->setAllowedValues('input', ['string', 'datetimezone', 'intltimezone']);
$resolver->setNormalizer('input', function (Options $options, $value) {
if ('intltimezone' === $value && !class_exists(\IntlTimeZone::class)) {
throw new LogicException('Cannot use "intltimezone" input because the PHP intl extension is not available.');
}
return $value;
});
$resolver->setAllowedTypes('regions', 'int');
$resolver->setDeprecated('regions', 'The option "%name%" is deprecated since Symfony 4.2.');
$resolver->setNormalizer('regions', function (Options $options, $value) {
if ($options['intl'] && \DateTimeZone::ALL !== (\DateTimeZone::ALL & $value)) {
throw new LogicException('The "regions" option can only be used if the "intl" option is set to false.');
}
return $value;
});
}
/**
* {@inheritdoc}
*/
public function getParent()
{
return ChoiceType::class;
}
/**
* {@inheritdoc}
*/
public function getBlockPrefix()
{
return 'timezone';
}
private static function getPhpTimezones(int $regions, string $input): array
{
$timezones = [];
foreach (\DateTimeZone::listIdentifiers($regions) as $timezone) {
if ('intltimezone' === $input && 'Etc/Unknown' === \IntlTimeZone::createTimeZone($timezone)->getID()) {
continue;
}
$timezones[str_replace(['/', '_'], [' / ', ' '], $timezone)] = $timezone;
}
return $timezones;
}
private static function getIntlTimezones(string $input, string $locale = null): array
{
$timezones = array_flip(Timezones::getNames($locale));
if ('intltimezone' === $input) {
foreach ($timezones as $name => $timezone) {
if ('Etc/Unknown' === \IntlTimeZone::createTimeZone($timezone)->getID()) {
unset($timezones[$name]);
}
}
}
return $timezones;
}
}