Renderer.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\UI\Implementation\Component\Legacy;
 
use ILIAS\UI\Implementation\Render\AbstractComponentRenderer;
use ILIAS\UI\Renderer as RendererInterface;
use ILIAS\UI\Component;
 
class Renderer extends AbstractComponentRenderer
{
    public function render(Component\Component $component, RendererInterface $default_renderer): string
    {
        $this->checkComponent($component);
 
        $component = $this->registerSignals($component);
        $this->bindJavaScript($component);
        return $component->getContent();
    }
 
    protected function getComponentInterfaceName(): array
    {
        return [Component\Legacy\Legacy::class];
    }
 
    protected function registerSignals(Legacy $component): Component\JavaScriptBindable
    {
        $custom_signals = $component->getAllCustomSignals();
 
        return $component->withAdditionalOnLoadCode(function ($id) use ($custom_signals): string {
            $code = "";
            foreach ($custom_signals as $custom_signal) {
                $signal_id = $custom_signal['signal'];
                $signal_code = $custom_signal['js_code'];
                $code .= "$(document).on('$signal_id', function(event, signalData) { $signal_code });";
            }
            return $code;
        });
    }
}