Version 1

[yaffs-website] / web / core / modules / language / src / Form / NegotiationBrowserForm.php

diff --git a/web/core/modules/language/src/Form/NegotiationBrowserForm.php b/web/core/modules/language/src/Form/NegotiationBrowserForm.php
new file mode 100644 (file)
index 0000000..5535fe0
--- /dev/null
+++ b/web/core/modules/language/src/Form/NegotiationBrowserForm.php
@@ -0,0 +1,215 @@
+<?php
+
+namespace Drupal\language\Form;
+
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Form\ConfigFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+use Drupal\language\ConfigurableLanguageManagerInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Configure the browser language negotiation method for this site.
+ */
+class NegotiationBrowserForm extends ConfigFormBase {
+
+  /**
+   * The configurable language manager.
+   *
+   * @var \Drupal\language\ConfigurableLanguageManagerInterface
+   */
+  protected $languageManager;
+
+  /**
+   * {@inheritdoc}
+   *
+   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+   *   The module handler
+   */
+  public function __construct(ConfigFactoryInterface $config_factory, ConfigurableLanguageManagerInterface $language_manager ) {
+    parent::__construct($config_factory);
+    $this->languageManager = $language_manager;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('config.factory'),
+      $container->get('language_manager')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'language_negotiation_configure_browser_form';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getEditableConfigNames() {
+    return ['language.mappings'];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    $form = [];
+
+    // Initialize a language list to the ones available, including English.
+    $languages = $this->languageManager->getLanguages();
+
+    $existing_languages = [];
+    foreach ($languages as $langcode => $language) {
+      $existing_languages[$langcode] = $language->getName();
+    }
+
+    // If we have no languages available, present the list of predefined languages
+    // only. If we do have already added languages, set up two option groups with
+    // the list of existing and then predefined languages.
+    if (empty($existing_languages)) {
+      $language_options = $this->languageManager->getStandardLanguageListWithoutConfigured();
+    }
+    else {
+      $language_options = [
+        (string) $this->t('Existing languages') => $existing_languages,
+        (string) $this->t('Languages not yet added') => $this->languageManager->getStandardLanguageListWithoutConfigured(),
+      ];
+    }
+
+    $form['mappings'] = [
+      '#type' => 'table',
+      '#header' => [
+        $this->t('Browser language code'),
+        $this->t('Site language'),
+        $this->t('Operations'),
+      ],
+      '#attributes' => ['id' => 'language-negotiation-browser'],
+      '#empty' => $this->t('No browser language mappings available.'),
+    ];
+
+    $mappings = $this->language_get_browser_drupal_langcode_mappings();
+    foreach ($mappings as $browser_langcode => $drupal_langcode) {
+      $form['mappings'][$browser_langcode] = [
+        'browser_langcode' => [
+          '#title' => $this->t('Browser language code'),
+          '#title_display' => 'invisible',
+          '#type' => 'textfield',
+          '#default_value' => $browser_langcode,
+          '#size' => 20,
+          '#required' => TRUE,
+        ],
+        'drupal_langcode' => [
+          '#title' => $this->t('Site language'),
+          '#title_display' => 'invisible',
+          '#type' => 'select',
+          '#options' => $language_options,
+          '#default_value' => $drupal_langcode,
+          '#required' => TRUE,
+        ],
+      ];
+      // Operations column.
+      $form['mappings'][$browser_langcode]['operations'] = [
+        '#type' => 'operations',
+        '#links' => [],
+      ];
+      $form['mappings'][$browser_langcode]['operations']['#links']['delete'] = [
+        'title' => $this->t('Delete'),
+        'url' => Url::fromRoute('language.negotiation_browser_delete', ['browser_langcode' => $browser_langcode]),
+      ];
+    }
+
+    // Add empty row.
+    $form['new_mapping'] = [
+      '#type' => 'details',
+      '#title' => $this->t('Add a new mapping'),
+      '#tree' => TRUE,
+    ];
+    $form['new_mapping']['browser_langcode'] = [
+      '#type' => 'textfield',
+      '#title' => $this->t('Browser language code'),
+      '#description' => $this->t('Use language codes as <a href=":w3ctags">defined by the W3C</a> for interoperability. <em>Examples: "en", "en-gb" and "zh-hant".</em>', [':w3ctags' => 'http://www.w3.org/International/articles/language-tags/']),
+      '#size' => 20,
+    ];
+    $form['new_mapping']['drupal_langcode'] = [
+      '#type' => 'select',
+      '#title' => $this->t('Site language'),
+      '#options' => $language_options,
+    ];
+
+    return parent::buildForm($form, $form_state);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function validateForm(array &$form, FormStateInterface $form_state) {
+    // Array to check if all browser language codes are unique.
+    $unique_values = [];
+
+    // Check all mappings.
+    if ($form_state->hasValue('mappings')) {
+      $mappings = $form_state->getValue('mappings');
+      foreach ($mappings as $key => $data) {
+        // Make sure browser_langcode is unique.
+        if (array_key_exists($data['browser_langcode'], $unique_values)) {
+          $form_state->setErrorByName('mappings][new_mapping][browser_langcode', $this->t('Browser language codes must be unique.'));
+        }
+        elseif (preg_match('/[^a-z\-]/', $data['browser_langcode'])) {
+          $form_state->setErrorByName('mappings][new_mapping][browser_langcode', $this->t('Browser language codes can only contain lowercase letters and a hyphen(-).'));
+        }
+        $unique_values[$data['browser_langcode']] = $data['drupal_langcode'];
+      }
+    }
+
+    // Check new mapping.
+    $data = $form_state->getValue('new_mapping');
+    if (!empty($data['browser_langcode'])) {
+      // Make sure browser_langcode is unique.
+      if (array_key_exists($data['browser_langcode'], $unique_values)) {
+        $form_state->setErrorByName('mappings][' . $key . '][browser_langcode', $this->t('Browser language codes must be unique.'));
+      }
+      elseif (preg_match('/[^a-z\-]/', $data['browser_langcode'])) {
+        $form_state->setErrorByName('mappings][' . $key . '][browser_langcode', $this->t('Browser language codes can only contain lowercase letters and a hyphen(-).'));
+      }
+      $unique_values[$data['browser_langcode']] = $data['drupal_langcode'];
+    }
+
+    $form_state->set('mappings', $unique_values);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $mappings = $form_state->get('mappings');
+    if (!empty($mappings)) {
+      $config = $this->config('language.mappings');
+      $config->setData(['map' => $mappings]);
+      $config->save();
+    }
+
+    parent::submitForm($form, $form_state);
+  }
+
+  /**
+   * Retrieves the browser's langcode mapping configuration array.
+   *
+   * @return array
+   *   The browser's langcode mapping configuration array.
+   */
+  protected function language_get_browser_drupal_langcode_mappings() {
+    $config = $this->config('language.mappings');
+    if ($config->isNew()) {
+      return [];
+    }
+    return $config->get('map');
+  }
+
+}