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- <?php
- namespace Drupal\Core\Installer\Form;
- use Drupal\Component\Utility\UserAgent;
- use Drupal\Core\Form\FormBase;
- use Drupal\Core\Form\FormStateInterface;
- use Drupal\Core\Language\LanguageManager;
- use Symfony\Component\HttpFoundation\Request;
- /**
- * Provides the language selection form.
- *
- * Note that hardcoded text provided by this form is not translated. This is
- * because translations are downloaded as a result of submitting this form.
- *
- * @internal
- */
- class SelectLanguageForm extends FormBase {
- /**
- * {@inheritdoc}
- */
- public function getFormId() {
- return 'install_select_language_form';
- }
- /**
- * {@inheritdoc}
- */
- public function buildForm(array $form, FormStateInterface $form_state, $install_state = NULL) {
- if (count($install_state['translations']) > 1) {
- $files = $install_state['translations'];
- }
- else {
- $files = [];
- }
- $standard_languages = LanguageManager::getStandardLanguageList();
- $select_options = [];
- $browser_options = [];
- $form['#title'] = 'Choose language';
- // Build a select list with language names in native language for the user
- // to choose from. And build a list of available languages for the browser
- // to select the language default from.
- // Select lists based on all standard languages.
- foreach ($standard_languages as $langcode => $language_names) {
- $select_options[$langcode] = $language_names[1];
- $browser_options[$langcode] = $langcode;
- }
- // Add languages based on language files in the translations directory.
- if (count($files)) {
- foreach ($files as $langcode => $uri) {
- $select_options[$langcode] = isset($standard_languages[$langcode]) ? $standard_languages[$langcode][1] : $langcode;
- $browser_options[$langcode] = $langcode;
- }
- }
- asort($select_options);
- $request = Request::createFromGlobals();
- $browser_langcode = UserAgent::getBestMatchingLangcode($request->server->get('HTTP_ACCEPT_LANGUAGE'), $browser_options);
- $form['langcode'] = [
- '#type' => 'select',
- '#title' => 'Choose language',
- '#title_display' => 'invisible',
- '#options' => $select_options,
- // Use the browser detected language as default or English if nothing found.
- '#default_value' => !empty($browser_langcode) ? $browser_langcode : 'en',
- ];
- $link_to_english = install_full_redirect_url(['parameters' => ['langcode' => 'en']]);
- $form['help'] = [
- '#type' => 'item',
- // #markup is XSS admin filtered which ensures unsafe protocols will be
- // removed from the url.
- '#markup' => '<p>Translations will be downloaded from the <a href="http://localize.drupal.org">Drupal Translation website</a>. If you do not want this, select <a href="' . $link_to_english . '">English</a>.</p>',
- '#states' => [
- 'invisible' => [
- 'select[name="langcode"]' => ['value' => 'en'],
- ],
- ],
- ];
- $form['actions'] = ['#type' => 'actions'];
- $form['actions']['submit'] = [
- '#type' => 'submit',
- '#value' => 'Save and continue',
- '#button_type' => 'primary',
- ];
- return $form;
- }
- /**
- * {@inheritdoc}
- */
- public function submitForm(array &$form, FormStateInterface $form_state) {
- $build_info = $form_state->getBuildInfo();
- $build_info['args'][0]['parameters']['langcode'] = $form_state->getValue('langcode');
- $form_state->setBuildInfo($build_info);
- }
- }
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