DefaultRenderer.php

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<?php

declare(strict_types=1);

namespace ILIAS\UI\Implementation;

use ILIAS\UI\Renderer;
use ILIAS\UI\Component\Component;
use ILIAS\UI\Implementation\Render\ComponentRenderer;
use LogicException;

class DefaultRenderer implements Renderer
{
    private Render\Loader $component_renderer_loader;

    private array $contexts = [];

    public function __construct(Render\Loader $component_renderer_loader)
    {
        $this->component_renderer_loader = $component_renderer_loader;
    }

    public function render($component, ?Renderer $root = null)
    {
        $root = $root ?? $this;

        $out = '';
        if (is_array($component)) {
            foreach ($component as $_component) {
                $out .= $root->render($_component);
            }
        } else {
            $renderer = $this->getRendererFor($component);
            $out = $renderer->render($component, $root);
        }

        return $out;
    }

    public function renderAsync($component, ?Renderer $root = null)
    {
        $root = $root ?? $this;

        $out = '';
        if (is_array($component)) {
            foreach ($component as $_component) {
                $out .= $root->renderAsync($_component);
            }
        } else {
            $out = $this->render($component, $root) .
            $this->getJSCodeForAsyncRenderingFor($component);
        }
        return $out;
    }

    protected function getRendererFor(Component $component): ComponentRenderer
    {
        return $this->component_renderer_loader->getRendererFor($component, $this->getContexts());
    }

    protected function getJSCodeForAsyncRenderingFor(Component $component)
    {
        return $this->component_renderer_loader
            ->getRendererFactoryFor($component)
            ->getJSBinding()
            ->getOnLoadCodeAsync();
    }

    public function withAdditionalContext(Component $context): Renderer
    {
        $clone = clone $this;
        $clone->contexts[] = $context;
        return $clone;
    }

    protected function getContexts(): array
    {
        return $this->contexts;
    }
}