Lightbox.php

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<?php

declare(strict_types=1);

namespace ILIAS\UI\Implementation\Component\Modal;

use ILIAS\UI\Component as Component;
use ILIAS\UI\Component\Modal\LightboxPage;
use ILIAS\UI\Implementation\Component\SignalGeneratorInterface;

class Lightbox extends Modal implements Component\Modal\Lightbox
{
    private const SCHEME_BRIGHT = 'bright';
    private const SCHEME_DARK = 'dark';
    protected array $pages;

    protected string $scheme = self::SCHEME_BRIGHT;

    public function __construct($pages, SignalGeneratorInterface $signal_generator)
    {
        parent::__construct($signal_generator);
        $pages = $this->toArray($pages);
        $types = array(LightboxPage::class);
        $this->checkArgListElements('pages', $pages, $types);
        // if there is at least one image page, the lightbox is in dark mode.
        array_walk($pages, function (LightboxPage $page) {
            if ($page instanceof Component\Modal\LightboxImagePage) {
                $this->scheme = self::SCHEME_DARK;
            }
        });
        $this->pages = $pages;
    }

    public function getPages(): array
    {
        return $this->pages;
    }

    public function getScheme(): string
    {
        return $this->scheme;
    }
}