<?php
/**
 * Pimcore
 *
 * This source file is available under two different licenses:
 * - GNU General Public License version 3 (GPLv3)
 * - Pimcore Enterprise License (PEL)
 * Full copyright and license information is available in
 * LICENSE.md which is distributed with this source code.
 *
 * @category   Pimcore
 * @package    Object|Class
 * @copyright  Copyright (c) 2009-2016 pimcore GmbH (http://www.pimcore.org)
 * @license    http://www.pimcore.org/license     GPLv3 and PEL
 */

namespace Pimcore\Model\Object\ClassDefinition\Data\Extension;

use Pimcore\Model;

trait Text
{

    /**
     * Checks if data is valid for current data field
     *
     * @param mixed $data
     * @param boolean $omitMandatoryCheck
     * @throws \Exception
     */
    public function checkValidity($data, $omitMandatoryCheck = false)
    {
        if (!$omitMandatoryCheck && $this->getMandatory() && $this->isEmpty($data)) {
            throw new Model\Element\ValidationException("Empty mandatory field [ " . $this->getName() . " ]");
        }
    }

    /**
     * @param $data
     * @return bool
     */
    public function isEmpty($data)
    {
        return (strlen($data) < 1);
    }

    /** True if change is allowed in edit mode.
     * @param string $object
     * @param mixed $params
     * @return bool
     */
    public function isDiffChangeAllowed($object, $params = [])
    {
        return true;
    }

    /**
     * @see Object\ClassDefinition\Data::getVersionPreview
     * @param string $data
     * @param null|Object\AbstractObject $object
     * @param mixed $params
     * @return string
     */
    public function getVersionPreview($data, $object = null, $params = [])
    {
        // remove all <script> tags, to prevent XSS in the version preview
        // this should normally be filtered in the project specific controllers/action (/website folder) but just to be sure
        $data = preg_replace('#<script(.*?)>(.*?)</script>#is', '', $data);

        return $data;
    }
}
