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 ILIAS\UI\Implementation\Render\JavaScriptBinding;
use LogicException;

class DefaultRenderer implements Renderer
{
    private array $contexts = [];

    public function __construct(
        private Render\Loader $component_renderer_loader,
        private JavaScriptBinding $java_script_binding,
    ) {
    }

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

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

        try {
            $this->pushContext($component);
            $renderer = $this->getRendererFor($component);
            $out = $renderer->render($component, $root);
        } finally {
            $this->popContext();
        }

        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->java_script_binding->getOnLoadCodeAsync();
        }
        return $out;
    }

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

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

    protected function pushContext(Component $component): void
    {
        $this->contexts[] = $component;
    }

    protected function popContext(): void
    {
        array_pop($this->contexts);
    }
}