<?php

/*

 * This file is part of the Symfony package.

 *

 * (c) Fabien Potencier <fabien@symfony.com>

 *

 * For the full copyright and license information, please view the LICENSE

 * file that was distributed with this source code.

 */

namespace Symfony\Component\HttpKernel\CacheWarmer;

/**

 *

 * @author Fabien Potencier <fabien@symfony.com>

 */

class CacheWarmerAggregate implements CacheWarmerInterface

{

    protected $warmers;

    protected $optionalsEnabled;

    public function __construct(array $warmers = array())

    {

        $this->setWarmers($warmers);

        $this->optionalsEnabled = false;

    }

    public function enableOptionalWarmers()

    {

        $this->optionalsEnabled = true;

    }

    /**

     * Warms up the cache.

     *

     * @param string $cacheDir The cache directory

     */

    public function warmUp($cacheDir)

    {

        foreach ($this->warmers as $warmer) {

            if (!$this->optionalsEnabled && $warmer->isOptional()) {

                continue;

            }

            $warmer->warmUp($cacheDir);

        }

    }

    /**

     * Checks whether this warmer is optional or not.

     *

     * @return Boolean always true

     */

    public function isOptional()

    {

        return false;

    }

    public function setWarmers(array $warmers)

    {

        $this->warmers = array();

        foreach ($warmers as $warmer) {

            $this->add($warmer);

        }

    }

    public function add(CacheWarmerInterface $warmer)

    {

        $this->warmers[] = $warmer;

    }

}