<?php

/*

 * This file is part of the Assetic package, an OpenSky project.

 *

 * (c) 2010-2011 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\Filter\FilterInterface;

/**

 * A collection of assets loaded by glob.

 *

 * @author Kris Wallsmith <kris.wallsmith@gmail.com>

 */

class GlobAsset extends AssetCollection

{

    private $globs;

    private $initialized;

    /**

     * Constructor.

     *

     * @param string|array $globs   A single glob path or array of paths

     * @param array        $filters An array of filters

     * @param string       $root    The root directory

     */

    public function __construct($globs, $filters = array(), $root = null)

    {

        $this->globs = (array) $globs;

        $this->initialized = false;

        parent::__construct(array(), $filters, $root);

    }

    public function all()

    {

        if (!$this->initialized) {

            $this->initialize();

        }

        return parent::all();

    }

    public function load(FilterInterface $additionalFilter = null)

    {

        if (!$this->initialized) {

            $this->initialize();

        }

        parent::load($additionalFilter);

    }

    public function dump(FilterInterface $additionalFilter = null)

    {

        if (!$this->initialized) {

            $this->initialize();

        }

        return parent::dump($additionalFilter);

    }

    public function getLastModified()

    {

        if (!$this->initialized) {

            $this->initialize();

        }

        return parent::getLastModified();

    }

    public function getIterator()

    {

        if (!$this->initialized) {

            $this->initialize();

        }

        return parent::getIterator();

    }

    /**

     * Initializes the collection based on the glob(s) passed in.

     */

    private function initialize()

    {

        foreach ($this->globs as $glob) {

            if (false !== $paths = glob($glob)) {

                foreach ($paths as $path) {

                    $this->add(new FileAsset($path, array(), $this->getSourceRoot()));

                }

            }

        }

        $this->initialized = true;

    }

}