comparison core/modules/language/src/Plugin/Block/LanguageBlock.php @ 0:4c8ae668cc8c

Initial import (non-working)

+<?php
+
+namespace Drupal\language\Plugin\Block;
+
+use Drupal\Core\Access\AccessResult;
+use Drupal\Core\Block\BlockBase;
+use Drupal\Core\Path\PathMatcherInterface;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\Core\Language\LanguageManagerInterface;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\Core\Url;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Provides a 'Language switcher' block.
+ *
+ * @Block(
+ *   id = "language_block",
+ *   admin_label = @Translation("Language switcher"),
+ *   category = @Translation("System"),
+ *   deriver = "Drupal\language\Plugin\Derivative\LanguageBlock"
+ * )
+ */
+class LanguageBlock extends BlockBase implements ContainerFactoryPluginInterface {
+
+  /**
+   * The language manager.
+   *
+   * @var \Drupal\Core\Language\LanguageManagerInterface
+   */
+  protected $languageManager;
+
+  /**
+   * The path matcher.
+   *
+   * @var \Drupal\Core\Path\PathMatcherInterface
+   */
+  protected $pathMatcher;
+
+  /**
+   * Constructs an LanguageBlock object.
+   *
+   * @param array $configuration
+   *   A configuration array containing information about the plugin instance.
+   * @param string $plugin_id
+   *   The plugin_id for the plugin instance.
+   * @param mixed $plugin_definition
+   *   The plugin implementation definition.
+   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
+   *   The language manager.
+   * @param \Drupal\Core\Path\PathMatcherInterface $path_matcher
+   *   The path matcher.
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, LanguageManagerInterface $language_manager, PathMatcherInterface $path_matcher) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+    $this->languageManager = $language_manager;
+    $this->pathMatcher = $path_matcher;
+  }
+
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+      $configuration,
+      $plugin_id,
+      $plugin_definition,
+      $container->get('language_manager'),
+      $container->get('path.matcher')
+    );
+  }
+
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function blockAccess(AccountInterface $account) {
+    $access = $this->languageManager->isMultilingual() ? AccessResult::allowed() : AccessResult::forbidden();
+    return $access->addCacheTags(['config:configurable_language_list']);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function build() {
+    $build = [];
+    $route_name = $this->pathMatcher->isFrontPage() ? '<front>' : '<current>';
+    $type = $this->getDerivativeId();
+    $links = $this->languageManager->getLanguageSwitchLinks($type, Url::fromRoute($route_name));
+
+    if (isset($links->links)) {
+      $build = [
+        '#theme' => 'links__language_block',
+        '#links' => $links->links,
+        '#attributes' => [
+          'class' => [
+            "language-switcher-{$links->method_id}",
+          ],
+        ],
+        '#set_active_class' => TRUE,
+      ];
+    }
+    return $build;
+  }
+
+  /**
+   * {@inheritdoc}
+   *
+   * @todo Make cacheable in https://www.drupal.org/node/2232375.
+   */
+  public function getCacheMaxAge() {
+    return 0;
+  }
+
+}