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<?php

/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2005 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Application;

use Joomla\CMS\User\User;
use Joomla\CMS\User\UserFactoryAwareTrait;

// phpcs:disable PSR1.Files.SideEffects
\defined('JPATH_PLATFORM') or die;
// phpcs:enable PSR1.Files.SideEffects

/**
 * Trait for application classes which are identity (user) aware
 *
 * @since  4.0.0
 */
trait IdentityAware
{
    use UserFactoryAwareTrait;

    /**
     * The application identity object.
     *
     * @var    User
     * @since  4.0.0
     */
    protected $identity;

    /**
     * Get the application identity.
     *
     * @return  User
     *
     * @since   4.0.0
     */
    public function getIdentity()
    {
        return $this->identity;
    }

    /**
     * Allows the application to load a custom or default identity.
     *
     * @param   User  $identity  An optional identity object. If omitted, a null user object is created.
     *
     * @return  $this
     *
     * @since   4.0.0
     */
    public function loadIdentity(User $identity = null)
    {
        $this->identity = $identity ?: $this->getUserFactory()->loadUserById(0);

        return $this;
    }
}