ViewControlInput.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\UI\Implementation\Component\Input\ViewControl;
 
use ILIAS\UI\Component\Input\Container\ViewControl\ViewControlInput as ViewControlInputInterface;
use ILIAS\UI\Implementation\Component\Input\Input;
use ILIAS\UI\Implementation\Component\Triggerer;
use ILIAS\UI\Implementation\Component\JavaScriptBindable;
use ILIAS\UI\Component\Signal;
 
abstract class ViewControlInput extends Input implements ViewControlInputInterface
{
    use JavaScriptBindable;
    use Triggerer;
 
    protected ?Signal $change_signal = null;
 
    public function withOnChange(Signal $change_signal): self
    {
        $clone = clone $this;
        $clone->change_signal = $change_signal;
        return $clone;
    }
 
    public function getOnChangeSignal(): Signal
    {
        if (!$this->change_signal) {
            throw new \LogicException('View Control must be inside of View Control Container');
        }
        return $this->change_signal;
    }
}