DomainLangNegotiationUrlForm.php in Domain Lang 8

Namespace

Drupal\domain_lang\Form

File

src/Form/DomainLangNegotiationUrlForm.php

<?php

namespace Drupal\domain_lang\Form;

use Drupal\Core\Config\ConfigFactoryInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Language\LanguageInterface;
use Drupal\Core\Language\LanguageManagerInterface;
use Drupal\Core\Url;
use Drupal\domain_lang\DomainLangHandlerInterface;
use Drupal\language\Form\NegotiationUrlForm;
use Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationUrl;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * Configure the URL language negotiation method for this site.
 */
class DomainLangNegotiationUrlForm extends NegotiationUrlForm {

  /**
   * The domain lang handler.
   *
   * @var \Drupal\domain_lang\DomainLangHandlerInterface
   */
  protected $domainLangHandler;

  /**
   * Language negotiation config name for current active domain.
   *
   * @var string
   */
  protected $languageNegotiationConfig;

  /**
   * Constructs a \Drupal\system\ConfigFormBase object.
   *
   * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
   *   The factory for configuration objects.
   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
   *   The language manager.
   * @param \Drupal\domain_lang\DomainLangHandlerInterface $domain_lang_handler
   *   The domain lang handler.
   */
  public function __construct(ConfigFactoryInterface $config_factory, LanguageManagerInterface $language_manager, DomainLangHandlerInterface $domain_lang_handler) {
    parent::__construct($config_factory, $language_manager);
    $this->domainLangHandler = $domain_lang_handler;
    $this->languageNegotiationConfig = $this->domainLangHandler
      ->getDomainConfigName('language.negotiation');
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('config.factory'), $container
      ->get('language_manager'), $container
      ->get('domain_lang.handler'));
  }

  /**
   * {@inheritdoc}
   */
  protected function getEditableConfigNames() {
    return [
      'language.negotiation',
      $this->languageNegotiationConfig,
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    $config = $this
      ->config($this->languageNegotiationConfig);
    $form = parent::buildForm($form, $form_state);

    // Fill with initial values on first page visit.
    if (!$config
      ->get('url.source')) {
      $config
        ->set('url.source', $this
        ->config('language.negotiation')
        ->get('url.source'));
    }
    if (!$config
      ->get('url.prefixes')) {
      $config
        ->set('url.prefixes', $this
        ->config('language.negotiation')
        ->get('url.prefixes'));
    }
    if (!$config
      ->get('url.domains')) {
      $config
        ->set('url.domains', $this
        ->config('language.negotiation')
        ->get('url.domains'));
    }
    if (isset($form['language_negotiation_url_part'])) {
      $form['language_negotiation_url_part']['#default_value'] = $config
        ->get('url.source');
    }
    $domain = $this->domainLangHandler
      ->getDomainFromUrl();
    $languages = $this->languageManager
      ->getLanguages();
    $prefixes = $config
      ->get('url.prefixes');
    $domains = $config
      ->get('url.domains');
    foreach ($languages as $langcode => $language) {
      if (isset($form['prefix'], $form['prefix'][$langcode])) {
        $form['prefix'][$langcode]['#default_value'] = isset($prefixes[$langcode]) ? $prefixes[$langcode] : '';
        $form['prefix'][$langcode]['#field_prefix'] = $domain
          ->getPath();
      }
      if (isset($form['domain'], $form['domain'][$langcode])) {
        $form['domain'][$langcode]['#default_value'] = isset($domains[$langcode]) ? $domains[$langcode] : '';
      }
    }
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    $languages = $this->languageManager
      ->getLanguages();

    // Count repeated values for uniqueness check.
    $count = array_count_values($form_state
      ->getValue('prefix'));
    $default_langcode = $this
      ->config($this->languageNegotiationConfig)
      ->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) {

          // Throw a form error if the prefix is blank for a non-default
          // language, although it is required for selected negotiation type.
          $form_state
            ->setErrorByName("prefix][{$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) {

        // Throw a form error if the string contains a slash,
        // which would not work.
        $form_state
          ->setErrorByName("prefix][{$langcode}", $this
          ->t('The prefix may not contain a slash.'));
      }
      elseif (isset($count[$value]) && $count[$value] > 1) {

        // Throw a form error if there are two languages with the same
        // domain/prefix.
        $form_state
          ->setErrorByName("prefix][{$langcode}", $this
          ->t('The prefix for %language, %value, is not unique.', [
          '%language' => $language
            ->getName(),
          '%value' => $value,
        ]));
      }
    }

    // Count repeated values for uniqueness check.
    $count = array_count_values($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) {

          // Throw a form error if the domain is blank for a non-default
          // language, although it is required for selected negotiation type.
          $form_state
            ->setErrorByName("domain][{$langcode}", $this
            ->t('The domain may not be left blank for %language.', [
            '%language' => $language
              ->getName(),
          ]));
        }
      }
      elseif (isset($count[$value]) && $count[$value] > 1) {

        // Throw a form error if there are two languages with the same
        // domain/domain.
        $form_state
          ->setErrorByName("domain][{$langcode}", $this
          ->t('The domain for %language, %value, is not unique.', [
          '%language' => $language
            ->getName(),
          '%value' => $value,
        ]));
      }
    }

    // Domain names should not contain protocol and/or ports.
    foreach ($languages as $langcode => $language) {
      $value = $form_state
        ->getValue([
        'domain',
        $langcode,
      ]);
      if (!empty($value)) {

        // Ensure we have exactly one protocol when checking the hostname.
        $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);
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {

    // Save selected format (prefix or domain).
    $this
      ->config($this->languageNegotiationConfig)
      ->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();
    $form_state
      ->disableRedirect();
    $this
      ->messenger()
      ->addStatus($this
      ->t('The configuration options have been saved.'));
  }

}

Classes

Name	Description
DomainLangNegotiationUrlForm	Configure the URL language negotiation method for this site.