class LanguageBlock

Same name in this branch
  1. 10 core/modules/language/src/Plugin/Derivative/LanguageBlock.php \Drupal\language\Plugin\Derivative\LanguageBlock
Same name in other branches
  1. 9 core/modules/language/src/Plugin/Derivative/LanguageBlock.php \Drupal\language\Plugin\Derivative\LanguageBlock
  2. 9 core/modules/language/src/Plugin/Block/LanguageBlock.php \Drupal\language\Plugin\Block\LanguageBlock
  3. 8.9.x core/modules/language/src/Plugin/Derivative/LanguageBlock.php \Drupal\language\Plugin\Derivative\LanguageBlock
  4. 8.9.x core/modules/language/src/Plugin/Block/LanguageBlock.php \Drupal\language\Plugin\Block\LanguageBlock
  5. 11.x core/modules/language/src/Plugin/Derivative/LanguageBlock.php \Drupal\language\Plugin\Derivative\LanguageBlock
  6. 11.x core/modules/language/src/Plugin/Block/LanguageBlock.php \Drupal\language\Plugin\Block\LanguageBlock

Provides a 'Language switcher' block.

Hierarchy

Expanded class hierarchy of LanguageBlock

File

core/modules/language/src/Plugin/Block/LanguageBlock.php, line 20

Namespace

Drupal\language\Plugin\Block
View source
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 a 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 = [];
        $type = $this->getDerivativeId();
        $route_match = \Drupal::routeMatch();
        // If there is no route match, for example when creating blocks on 404 pages
        // for logged-in users with big_pipe enabled using the front page instead.
        if ($this->pathMatcher
            ->isFrontPage() || !$route_match->getRouteObject()) {
            // We are skipping the route match on both 404 and front page.
            // Example: If on front page, there is no route match like when creating
            // blocks on 404 pages for logged-in users with big_pipe enabled, use the
            // front page.
            $url = Url::fromRoute('<front>');
        }
        else {
            $url = Url::fromRouteMatch($route_match);
        }
        $links = $this->languageManager
            ->getLanguageSwitchLinks($type, $url);
        if (isset($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;
    }

}

Members

Title Sort descending Modifiers Object type Summary Member alias Overriden Title Overrides
BlockBase::buildConfigurationForm public function Form constructor. Overrides PluginFormInterface::buildConfigurationForm 2
BlockPluginInterface::BLOCK_LABEL_VISIBLE constant Indicates the block label (title) should be displayed to end users.
BlockPluginTrait::$inPreview protected property Whether the plugin is being rendered in preview mode.
BlockPluginTrait::$transliteration protected property The transliteration service.
BlockPluginTrait::access public function
BlockPluginTrait::baseConfigurationDefaults protected function Returns generic default configuration for block plugins.
BlockPluginTrait::blockForm public function 16
BlockPluginTrait::blockSubmit public function 12
BlockPluginTrait::blockValidate public function 3
BlockPluginTrait::buildConfigurationForm public function Creates a generic configuration form for all block types. Individual
block plugins can add elements to this form by overriding
BlockBase::blockForm(). Most block plugins should not override this
method unless they need to alter the generic form elements.
Aliased as: traitBuildConfigurationForm
BlockPluginTrait::calculateDependencies public function 1
BlockPluginTrait::defaultConfiguration public function 18
BlockPluginTrait::getConfiguration public function 1
BlockPluginTrait::getMachineNameSuggestion public function 1
BlockPluginTrait::getPreviewFallbackString public function 3
BlockPluginTrait::label public function
BlockPluginTrait::setConfiguration public function
BlockPluginTrait::setConfigurationValue public function
BlockPluginTrait::setInPreview public function
BlockPluginTrait::setTransliteration public function Sets the transliteration service.
BlockPluginTrait::submitConfigurationForm public function Most block plugins should not override this method. To add submission
handling for a specific block type, override BlockBase::blockSubmit().
BlockPluginTrait::transliteration protected function Wraps the transliteration service.
BlockPluginTrait::validateConfigurationForm public function Most block plugins should not override this method. To add validation
for a specific block type, override BlockBase::blockValidate().
1
ContextAwarePluginAssignmentTrait::addContextAssignmentElement protected function Builds a form element for assigning a context to a given slot.
ContextAwarePluginAssignmentTrait::contextHandler protected function Wraps the context handler.
ContextAwarePluginTrait::$context protected property The data objects representing the context of this plugin.
ContextAwarePluginTrait::getCacheContexts public function 10
ContextAwarePluginTrait::getCacheTags public function 3
ContextAwarePluginTrait::getContext public function
ContextAwarePluginTrait::getContextDefinition public function
ContextAwarePluginTrait::getContextDefinitions public function
ContextAwarePluginTrait::getContextMapping public function 1
ContextAwarePluginTrait::getContexts public function
ContextAwarePluginTrait::getContextValue public function
ContextAwarePluginTrait::getContextValues public function
ContextAwarePluginTrait::getPluginDefinition abstract public function 1
ContextAwarePluginTrait::setContext public function 1
ContextAwarePluginTrait::setContextMapping public function
ContextAwarePluginTrait::setContextValue public function
ContextAwarePluginTrait::validateContexts public function
DerivativeInspectionInterface::getBaseId public function Gets the base_plugin_id of the plugin instance. 1
DerivativeInspectionInterface::getDerivativeId public function Gets the derivative_id of the plugin instance. 1
LanguageBlock::$languageManager protected property The language manager.
LanguageBlock::$pathMatcher protected property The path matcher.
LanguageBlock::blockAccess protected function Indicates whether the block should be shown. Overrides BlockPluginTrait::blockAccess
LanguageBlock::build public function Builds and returns the renderable array for this block plugin. Overrides BlockPluginInterface::build
LanguageBlock::create public static function Creates an instance of the plugin. Overrides ContainerFactoryPluginInterface::create
LanguageBlock::getCacheMaxAge public function @todo Make cacheable in https://www.drupal.org/node/2232375. Overrides ContextAwarePluginTrait::getCacheMaxAge
LanguageBlock::__construct public function Constructs a LanguageBlock object. Overrides BlockPluginTrait::__construct
MessengerTrait::$messenger protected property The messenger. 16
MessengerTrait::messenger public function Gets the messenger. 16
MessengerTrait::setMessenger public function Sets the messenger.
PluginInspectionInterface::getPluginId public function Gets the plugin ID of the plugin instance. 2
PluginWithFormsTrait::getFormClass public function Implements \Drupal\Core\Plugin\PluginWithFormsInterface::getFormClass().
PluginWithFormsTrait::hasFormClass public function Implements \Drupal\Core\Plugin\PluginWithFormsInterface::hasFormClass().
StringTranslationTrait::$stringTranslation protected property The string translation service. 3
StringTranslationTrait::formatPlural protected function Formats a string containing a count of items.
StringTranslationTrait::getNumberOfPlurals protected function Returns the number of plurals supported by a given language.
StringTranslationTrait::getStringTranslation protected function Gets the string translation service.
StringTranslationTrait::setStringTranslation public function Sets the string translation service to use. 2
StringTranslationTrait::t protected function Translates a string to the current language or to a given language.

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.