AcceptAllFilter.php

<?php

/*
 * © 2016 IRSTEA
 * Guillaume Perréal <guillaume.perreal@irstea.fr>
 * Tous droits réservés.
 */

namespace Irstea\PlantUmlBundle\Model\Filter;

use Irstea\PlantUmlBundle\Model\ClassFilterInterface;

/**
 * Description of AcceptAllFilter
 *
 * @author Guillaume Perréal <guillaume.perreal@irstea.fr>
 */
class AcceptAllFilter implements ClassFilterInterface
{
    public function accept($className)
    {
        return true;
    }

    /**
     * @var self
     */
    static private $instance;

    /**
     * @return self
     */
    static public function instance()
    {
        if (!static::$instance) {
            static::$instance = new static();
        }
        return static::$instance;
    }
}