LoaderCachingWrapper.php

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<?php
 
/* Copyright (c) 2017 Richard Klees <richard.klees@concepts-and-training.de> Extended GPL, see docs/LICENSE */
 
namespace ILIAS\UI\Implementation\Render;
 
use ILIAS\UI\Component\Component;
 
class LoaderCachingWrapper implements Loader
{
    use LoaderHelper;
 
    private $loader;
 
    private $cache = array();
 
    public function __construct(Loader $loader)
    {
        $this->loader = $loader;
    }
 
    public function getRendererFor(Component $component, array $contexts)
    {
        $key = $this->getCacheKey($component, $contexts);
        if (isset($this->cache[$key])) {
            return $this->cache[$key];
        }
        $renderer = $this->loader->getRendererFor($component, $contexts);
        $this->cache[$key] = $renderer;
        return $renderer;
    }
 
    protected function getCacheKey(Component $component, array $contexts)
    {
        return $component->getCanonicalName() . " " . implode("_", $this->getContextNames($contexts));
    }
 
    public function getRendererFactoryFor(Component $component)
    {
        return $this->loader->getRendererFactoryFor($component);
    }
}