diff core/modules/language/src/Element/LanguageConfiguration.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/language/src/Element/LanguageConfiguration.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,115 @@
+<?php
+
+namespace Drupal\language\Element;
+
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Language\LanguageInterface;
+use Drupal\Core\Render\Element\FormElement;
+
+/**
+ * Defines an element for language configuration for a single field.
+ *
+ * @FormElement("language_configuration")
+ */
+class LanguageConfiguration extends FormElement {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getInfo() {
+    $class = get_class($this);
+    return [
+      '#input' => TRUE,
+      '#tree' => TRUE,
+      '#process' => [
+        [$class, 'processLanguageConfiguration'],
+      ],
+    ];
+  }
+
+  /**
+   * Process handler for the language_configuration form element.
+   */
+  public static function processLanguageConfiguration(&$element, FormStateInterface $form_state, &$form) {
+    $options = isset($element['#options']) ? $element['#options'] : [];
+    // Avoid validation failure since we are moving the '#options' key in the
+    // nested 'language' select element.
+    unset($element['#options']);
+    /** @var \Drupal\language\Entity\ContentLanguageSettings $default_config */
+    $default_config = $element['#default_value'];
+    $element['langcode'] = [
+      '#type' => 'select',
+      '#title' => t('Default language'),
+      '#options' => $options + static::getDefaultOptions(),
+      '#description' => t('Explanation of the language options is found on the <a href=":languages_list_page">languages list page</a>.', [':languages_list_page' => \Drupal::url('entity.configurable_language.collection')]),
+      '#default_value' => ($default_config != NULL) ? $default_config->getDefaultLangcode() : LanguageInterface::LANGCODE_SITE_DEFAULT,
+    ];
+
+    $element['language_alterable'] = [
+      '#type' => 'checkbox',
+      '#title' => t('Show language selector on create and edit pages'),
+      '#default_value' => ($default_config != NULL) ? $default_config->isLanguageAlterable() : FALSE,
+    ];
+
+    // Add the entity type and bundle information to the form if they are set.
+    // They will be used, in the submit handler, to generate the names of the
+    // configuration entities that will store the settings and are a way to uniquely
+    // identify the entity.
+    $language = $form_state->get('language') ?: [];
+    $language += [
+      $element['#name'] => [
+        'entity_type' => $element['#entity_information']['entity_type'],
+        'bundle' => $element['#entity_information']['bundle'],
+      ],
+    ];
+    $form_state->set('language', $language);
+
+    // Do not add the submit callback for the language content settings page,
+    // which is handled separately.
+    if ($form['#form_id'] != 'language_content_settings_form') {
+      // Determine where to attach the language_configuration element submit
+      // handler.
+      // @todo Form API: Allow form widgets/sections to declare #submit
+      //   handlers.
+      $submit_name = isset($form['actions']['save_continue']) ? 'save_continue' : 'submit';
+      if (isset($form['actions'][$submit_name]['#submit']) && array_search('language_configuration_element_submit', $form['actions'][$submit_name]['#submit']) === FALSE) {
+        $form['actions'][$submit_name]['#submit'][] = 'language_configuration_element_submit';
+      }
+      elseif (array_search('language_configuration_element_submit', $form['#submit']) === FALSE) {
+        $form['#submit'][] = 'language_configuration_element_submit';
+      }
+    }
+    return $element;
+  }
+
+  /**
+   * Returns the default options for the language configuration form element.
+   *
+   * @return array
+   *   An array containing the default options.
+   */
+  protected static function getDefaultOptions() {
+    $language_options = [
+      LanguageInterface::LANGCODE_SITE_DEFAULT => t("Site's default language (@language)", ['@language' => static::languageManager()->getDefaultLanguage()->getName()]),
+      'current_interface' => t('Interface text language selected for page'),
+      'authors_default' => t("Author's preferred language"),
+    ];
+
+    $languages = static::languageManager()->getLanguages(LanguageInterface::STATE_ALL);
+    foreach ($languages as $langcode => $language) {
+      $language_options[$langcode] = $language->isLocked() ? t('- @name -', ['@name' => $language->getName()]) : $language->getName();
+    }
+
+    return $language_options;
+  }
+
+  /**
+   * Wraps the language manager.
+   *
+   * @return \Drupal\Core\Language\LanguageManagerInterface
+   */
+  protected static function languageManager() {
+    return \Drupal::languageManager();
+  }
+
+}