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);
    }
}