LayoutBuilderUiCacheContext.php

<?php

namespace Drupal\layout_builder\Cache;

use Drupal\Core\Cache\Context\RouteNameCacheContext;

/**
 * Determines if an entity is being viewed in the Layout Builder UI.
 *
 * Cache context ID: 'route.name.is_layout_builder_ui'.
 *
 * @internal
 *   Tagged services are internal.
 */
class LayoutBuilderUiCacheContext extends RouteNameCacheContext {
    
    /**
     * {@inheritdoc}
     */
    public static function getLabel() {
        return t('Layout Builder user interface');
    }
    
    /**
     * {@inheritdoc}
     */
    public function getContext() {
        $route_name = $this->routeMatch
            ->getRouteName();
        if ($route_name && str_starts_with($route_name, 'layout_builder.')) {
            return 'is_layout_builder_ui.0';
        }
        return 'is_layout_builder_ui.1';
    }

}