LoginLogoutMenuLink.php in Drupal 9

Namespace

Drupal\user\Plugin\Menu

File

core/modules/user/src/Plugin/Menu/LoginLogoutMenuLink.php

<?php

namespace Drupal\user\Plugin\Menu;

use Drupal\Core\Menu\MenuLinkDefault;
use Drupal\Core\Menu\StaticMenuLinkOverridesInterface;
use Drupal\Core\Session\AccountInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * A menu link that shows "Log in" or "Log out" as appropriate.
 */
class LoginLogoutMenuLink extends MenuLinkDefault {

  /**
   * The current user.
   *
   * @var \Drupal\Core\Session\AccountInterface
   */
  protected $currentUser;

  /**
   * Constructs a new LoginLogoutMenuLink.
   *
   * @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\Menu\StaticMenuLinkOverridesInterface $static_override
   *   The static override storage.
   * @param \Drupal\Core\Session\AccountInterface $current_user
   *   The current user.
   */
  public function __construct(array $configuration, $plugin_id, $plugin_definition, StaticMenuLinkOverridesInterface $static_override, AccountInterface $current_user) {
    parent::__construct($configuration, $plugin_id, $plugin_definition, $static_override);
    $this->currentUser = $current_user;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    return new static($configuration, $plugin_id, $plugin_definition, $container
      ->get('menu_link.static.overrides'), $container
      ->get('current_user'));
  }

  /**
   * {@inheritdoc}
   */
  public function getTitle() {
    if ($this->currentUser
      ->isAuthenticated()) {
      return $this
        ->t('Log out');
    }
    else {
      return $this
        ->t('Log in');
    }
  }

  /**
   * {@inheritdoc}
   */
  public function getRouteName() {
    if ($this->currentUser
      ->isAuthenticated()) {
      return 'user.logout';
    }
    else {
      return 'user.login';
    }
  }

  /**
   * {@inheritdoc}
   */
  public function getCacheContexts() {
    return [
      'user.roles:authenticated',
    ];
  }

}

Classes

Name	Description
LoginLogoutMenuLink	A menu link that shows "Log in" or "Log out" as appropriate.