Menu.php

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<?php

declare(strict_types=1);

namespace ILIAS\UI\Implementation\Component\Menu;

use ILIAS\UI\Component;
use ILIAS\UI\Component\Menu as IMenu;
use ILIAS\UI\Implementation\Component\ComponentHelper;

abstract class Menu implements IMenu\Menu
{
    use ComponentHelper;

    protected $label;

    protected array $items = [];

    public function getLabel(): string
    {
        return $this->label;
    }

    public function getItems(): array
    {
        return $this->items;
    }

    protected function checkItemParameter(array $items): void
    {
        $classes = [
            Component\Menu\Sub::class,
            Component\Clickable::class,
            Component\Link\Link::class,
            Component\Divider\Horizontal::class,
            Component\Input\Field\Node\Node::class,
        ];
        $this->checkArgListElements("items", $items, $classes);
    }
}