Select.php

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<?php

declare(strict_types=1);

namespace ILIAS\UI\Implementation\Component\Input\Field;

use ILIAS\Data\Factory as DataFactory;
use ILIAS\UI\Component as C;
use ILIAS\Refinery\Constraint;
use Closure;

class Select extends FormInput implements C\Input\Field\Select
{
    protected array $options;
    protected string $label;

    protected $value;
    private bool $complex = false;

    public function __construct(
        DataFactory $data_factory,
        \ILIAS\Refinery\Factory $refinery,
        string $label,
        array $options,
        ?string $byline
    ) {
        parent::__construct($data_factory, $refinery, $label, $byline);
        $this->options = $options;
    }

    public function getOptions(): array
    {
        return $this->options;
    }

    protected function isClientSideValueOk($value): bool
    {
        return in_array($value, array_keys($this->options)) || $value == "";
    }

    protected function getConstraintForRequirement(): ?Constraint
    {
        if ($this->requirement_constraint !== null) {
            return $this->requirement_constraint;
        }

        return $this->refinery->logical()->sequential([
            $this->refinery->to()->string(),
            $this->refinery->string()->hasMinLength(1)
        ]);
    }

    public function getUpdateOnLoadCode(): Closure
    {
        return fn ($id) => "$('#$id').on('input', function(event) {
                                il.UI.input.onFieldUpdate(event, '$id', $('#$id option:selected').text());
                        });
                        il.UI.input.onFieldUpdate(event, '$id', $('#$id option:selected').text());";
    }

    public function isComplex(): bool
    {
        return $this->complex;
    }
}