DecoratedRenderer.php

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<?php
 
declare(strict_types=1);
 
namespace ILIAS\UI\Implementation\Render;
 
use ILIAS\UI\Renderer;
use ILIAS\UI\Component\Component;
 
abstract class DecoratedRenderer implements Renderer
{
    private $default;
 
    public function __construct(Renderer $default)
    {
        $this->default = $default;
    }
 
    abstract protected function manipulateRendering($component, Renderer $root): ?string;
 
    protected function manipulateAsyncRendering($component, Renderer $root): ?string
    {
        return null;
    }
 
    final protected function renderDefault($component, ?Renderer $root = null): string
    {
        $root = $root ?? $this;
        return $this->default->render($component, $root);
    }
 
    final public function render($component, ?Renderer $root = null): string
    {
        $root = $root ?? $this;
        return $this->manipulateRendering($component, $root) ?? $this->default->render($component, $root);
    }
 
    final public function renderAsync($component, ?Renderer $root = null): string
    {
        $root = $root ?? $this;
        return $this->manipulateAsyncRendering($component, $root) ?? $this->default->renderAsync($component, $root);
    }
}