ToolbarLinkBuilder.php

<?php

namespace Drupal\user;

use Drupal\Core\Security\TrustedCallbackInterface;
use Drupal\Core\Session\AccountProxyInterface;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Drupal\Core\Url;

/**
 * ToolbarLinkBuilder fills out the placeholders generated in user_toolbar().
 */
class ToolbarLinkBuilder implements TrustedCallbackInterface {
    use StringTranslationTrait;
    
    /**
     * The current user.
     *
     * @var \Drupal\Core\Session\AccountProxyInterface
     */
    protected $account;
    
    /**
     * ToolbarHandler constructor.
     *
     * @param \Drupal\Core\Session\AccountProxyInterface $account
     *   The current user.
     */
    public function __construct(AccountProxyInterface $account) {
        $this->account = $account;
    }
    
    /**
     * Lazy builder callback for rendering toolbar links.
     *
     * @return array
     *   A renderable array as expected by the renderer service.
     */
    public function renderToolbarLinks() {
        $links = [
            'account' => [
                'title' => $this->t('View profile'),
                'url' => Url::fromRoute('user.page'),
                'attributes' => [
                    'title' => $this->t('User account'),
                ],
            ],
            'account_edit' => [
                'title' => $this->t('Edit profile'),
                'url' => Url::fromRoute('entity.user.edit_form', [
                    'user' => $this->account
                        ->id(),
                ]),
                'attributes' => [
                    'title' => $this->t('Edit user account'),
                ],
            ],
            'logout' => [
                'title' => $this->t('Log out'),
                'url' => Url::fromRoute('user.logout'),
            ],
        ];
        $build = [
            '#theme' => 'links__toolbar_user',
            '#links' => $links,
            '#attributes' => [
                'class' => [
                    'toolbar-menu',
                ],
            ],
            '#cache' => [
                'contexts' => [
                    'user',
                ],
            ],
        ];
        return $build;
    }
    
    /**
     * Lazy builder callback for rendering the username.
     *
     * @return array
     *   A renderable array as expected by the renderer service.
     */
    public function renderDisplayName() {
        return [
            '#markup' => $this->account
                ->getDisplayName(),
        ];
    }
    
    /**
     * {@inheritdoc}
     */
    public static function trustedCallbacks() {
        return [
            'renderToolbarLinks',
            'renderDisplayName',
        ];
    }

}