<?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\Security\Acl\Permission;

/**

 * This is basic permission map complements the masks which have been defined

 * on the standard implementation of the MaskBuilder.

 *

 * @author Johannes M. Schmitt <schmittjoh@gmail.com>

 */

class BasicPermissionMap implements PermissionMapInterface

{

    const PERMISSION_VIEW        = 'VIEW';

    const PERMISSION_EDIT        = 'EDIT';

    const PERMISSION_CREATE      = 'CREATE';

    const PERMISSION_DELETE      = 'DELETE';

    const PERMISSION_UNDELETE    = 'UNDELETE';

    const PERMISSION_OPERATOR    = 'OPERATOR';

    const PERMISSION_MASTER      = 'MASTER';

    const PERMISSION_OWNER       = 'OWNER';

    private $map = array(

        self::PERMISSION_VIEW => array(

            MaskBuilder::MASK_VIEW,

            MaskBuilder::MASK_EDIT,

            MaskBuilder::MASK_OPERATOR,

            MaskBuilder::MASK_MASTER,

            MaskBuilder::MASK_OWNER,

        ),

        self::PERMISSION_EDIT => array(

            MaskBuilder::MASK_EDIT,

            MaskBuilder::MASK_OPERATOR,

            MaskBuilder::MASK_MASTER,

            MaskBuilder::MASK_OWNER,

        ),

        self::PERMISSION_CREATE => array(

            MaskBuilder::MASK_CREATE,

            MaskBuilder::MASK_OPERATOR,

            MaskBuilder::MASK_MASTER,

            MaskBuilder::MASK_OWNER,

        ),

        self::PERMISSION_DELETE => array(

            MaskBuilder::MASK_DELETE,

            MaskBuilder::MASK_OPERATOR,

            MaskBuilder::MASK_MASTER,

            MaskBuilder::MASK_OWNER,

        ),

        self::PERMISSION_UNDELETE => array(

            MaskBuilder::MASK_UNDELETE,

            MaskBuilder::MASK_OPERATOR,

            MaskBuilder::MASK_MASTER,

            MaskBuilder::MASK_OWNER,

        ),

        self::PERMISSION_OPERATOR => array(

            MaskBuilder::MASK_OPERATOR,

            MaskBuilder::MASK_MASTER,

            MaskBuilder::MASK_OWNER,

        ),

        self::PERMISSION_MASTER => array(

            MaskBuilder::MASK_MASTER,

            MaskBuilder::MASK_OWNER,

        ),

        self::PERMISSION_OWNER => array(

            MaskBuilder::MASK_OWNER,

        ),

    );

    /**

     * {@inheritDoc}

     */

    public function getMasks($permission, $object)

    {

        if (!isset($this->map[$permission])) {

            return null;

        }

        return $this->map[$permission];

    }

    /**

     * {@inheritDoc}

     */

    public function contains($permission)

    {

        return isset($this->map[$permission]);

    }

}