vendor/kriswallsmith/assetic/src/Assetic/Asset/AssetReference.php

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<?php

/*
 * This file is part of the Assetic package, an OpenSky project.
 *
 * (c) 2010-2014 OpenSky Project Inc
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Assetic\Asset;

use Assetic\AssetManager;
use Assetic\Filter\FilterInterface;

/**
 * A reference to an asset in the asset manager.
 *
 * @author Kris Wallsmith <kris.wallsmith@gmail.com>
 */
class AssetReference implements AssetInterface
{
    private $am;
    private $name;
    private $filters = array();
    private $clone = false;
    private $asset;

    public function __construct(AssetManager $am, $name)
    {
        $this->am = $am;
        $this->name = $name;
    }

    public function __clone()
    {
        $this->clone = true;

        if ($this->asset) {
            $this->asset = clone $this->asset;
        }
    }

    public function ensureFilter(FilterInterface $filter)
    {
        $this->filters[] = $filter;
    }

    public function getFilters()
    {
        $this->flushFilters();

        return $this->callAsset(__FUNCTION__);
    }

    public function clearFilters()
    {
        $this->filters = array();
        $this->callAsset(__FUNCTION__);