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<?php
namespace Drupal\language\Form;
use Drupal\Core\Form\ConfigFormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Language\LanguageInterface;
use Drupal\Core\Language\LanguageManagerInterface;
use Drupal\Core\Config\ConfigFactoryInterface;
use Drupal\Core\Url;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationUrl;
class NegotiationUrlForm extends ConfigFormBase {
protected $languageManager;
public function __construct(ConfigFactoryInterface $config_factory, LanguageManagerInterface $language_manager) {
parent::__construct($config_factory);
$this->languageManager = $language_manager;
}
public static function create(ContainerInterface $container) {
return new static($container
->get('config.factory'), $container
->get('language_manager'));
}
public function getFormId() {
return 'language_negotiation_configure_url_form';
}
protected function getEditableConfigNames() {
return [
'language.negotiation',
];
}
public function buildForm(array $form, FormStateInterface $form_state) {
global $base_url;
$config = $this
->config('language.negotiation');
$form['language_negotiation_url_part'] = [
'#title' => $this
->t('Part of the URL that determines language'),
'#type' => 'radios',
'#options' => [
LanguageNegotiationUrl::CONFIG_PATH_PREFIX => $this
->t('Path prefix'),
LanguageNegotiationUrl::CONFIG_DOMAIN => $this
->t('Domain'),
],
'#default_value' => $config
->get('url.source'),
];
$form['prefix'] = [
'#type' => 'details',
'#tree' => TRUE,
'#title' => $this
->t('Path prefix configuration'),
'#open' => TRUE,
'#description' => $this
->t('Language codes or other custom text to use as a path prefix for URL language detection. For the selected fallback language, this value may be left blank. <strong>Modifying this value may break existing URLs. Use with caution in a production environment.</strong> Example: Specifying "deutsch" as the path prefix code for German results in URLs like "example.com/deutsch/contact".'),
'#states' => [
'visible' => [
':input[name="language_negotiation_url_part"]' => [
'value' => (string) LanguageNegotiationUrl::CONFIG_PATH_PREFIX,
],
],
],
];
$form['domain'] = [
'#type' => 'details',
'#tree' => TRUE,
'#title' => $this
->t('Domain configuration'),
'#open' => TRUE,
'#description' => $this
->t('The domain names to use for these languages. <strong>Modifying this value may break existing URLs. Use with caution in a production environment.</strong> Example: Specifying "de.example.com" as language domain for German will result in a URL like "http://de.example.com/contact".'),
'#states' => [
'visible' => [
':input[name="language_negotiation_url_part"]' => [
'value' => (string) LanguageNegotiationUrl::CONFIG_DOMAIN,
],
],
],
];
$languages = $this->languageManager
->getLanguages();
$prefixes = $config
->get('url.prefixes');
$domains = $config
->get('url.domains');
foreach ($languages as $langcode => $language) {
$t_args = [
'%language' => $language
->getName(),
'%langcode' => $language
->getId(),
];
$form['prefix'][$langcode] = [
'#type' => 'textfield',
'#title' => $language
->isDefault() ? $this
->t('%language (%langcode) path prefix (Default language)', $t_args) : $this
->t('%language (%langcode) path prefix', $t_args),
'#maxlength' => 64,
'#default_value' => isset($prefixes[$langcode]) ? $prefixes[$langcode] : '',
'#field_prefix' => $base_url . '/',
];
$form['domain'][$langcode] = [
'#type' => 'textfield',
'#title' => $this
->t('%language (%langcode) domain', [
'%language' => $language
->getName(),
'%langcode' => $language
->getId(),
]),
'#maxlength' => 128,
'#default_value' => isset($domains[$langcode]) ? $domains[$langcode] : '',
];
}
$form_state
->setRedirect('language.negotiation');
return parent::buildForm($form, $form_state);
}
public function validateForm(array &$form, FormStateInterface $form_state) {
$languages = $this->languageManager
->getLanguages();
$count = array_count_values($form_state
->getValue('prefix'));
$default_langcode = $this
->config('language.negotiation')
->get('selected_langcode');
if ($default_langcode == LanguageInterface::LANGCODE_SITE_DEFAULT) {
$default_langcode = $this->languageManager
->getDefaultLanguage()
->getId();
}
foreach ($languages as $langcode => $language) {
$value = $form_state
->getValue([
'prefix',
$langcode,
]);
if ($value === '') {
if (!($default_langcode == $langcode) && $form_state
->getValue('language_negotiation_url_part') == LanguageNegotiationUrl::CONFIG_PATH_PREFIX) {
$form_state
->setErrorByName("prefix][{$langcode}", $this
->t('The prefix may only be left blank for the <a href=":url">selected detection fallback language.</a>', [
':url' => Url::fromRoute('language.negotiation_selected')
->toString(),
]));
}
}
elseif (strpos($value, '/') !== FALSE) {
$form_state
->setErrorByName("prefix][{$langcode}", $this
->t('The prefix may not contain a slash.'));
}
elseif (isset($count[$value]) && $count[$value] > 1) {
$form_state
->setErrorByName("prefix][{$langcode}", $this
->t('The prefix for %language, %value, is not unique.', [
'%language' => $language
->getName(),
'%value' => $value,
]));
}
}
$count = array_count_values($form_state
->getValue('domain'));
foreach ($languages as $langcode => $language) {
$value = $form_state
->getValue([
'domain',
$langcode,
]);
if ($value === '') {
if ($form_state
->getValue('language_negotiation_url_part') == LanguageNegotiationUrl::CONFIG_DOMAIN) {
$form_state
->setErrorByName("domain][{$langcode}", $this
->t('The domain may not be left blank for %language.', [
'%language' => $language
->getName(),
]));
}
}
elseif (isset($count[$value]) && $count[$value] > 1) {
$form_state
->setErrorByName("domain][{$langcode}", $this
->t('The domain for %language, %value, is not unique.', [
'%language' => $language
->getName(),
'%value' => $value,
]));
}
}
foreach ($languages as $langcode => $language) {
$value = $form_state
->getValue([
'domain',
$langcode,
]);
if (!empty($value)) {
$host = 'http://' . str_replace([
'http://',
'https://',
], '', $value);
if (parse_url($host, PHP_URL_HOST) != $value) {
$form_state
->setErrorByName("domain][{$langcode}", $this
->t('The domain for %language may only contain the domain name, not a trailing slash, protocol and/or port.', [
'%language' => $language
->getName(),
]));
}
}
}
parent::validateForm($form, $form_state);
}
public function submitForm(array &$form, FormStateInterface $form_state) {
$this
->config('language.negotiation')
->set('url.source', $form_state
->getValue('language_negotiation_url_part'))
->set('url.prefixes', $form_state
->getValue('prefix'))
->set('url.domains', $form_state
->getValue('domain'))
->save();
parent::submitForm($form, $form_state);
}
}