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<?php

/**
 * MvcCore
 *
 * This source file is subject to the BSD 3 License
 * For the full copyright and license information, please view 
 * the LICENSE.md file that are distributed with this source code.
 *
 * @copyright   Copyright (c) 2016 Tom Flídr (https://github.com/mvccore/mvccore)
 * @license     https://mvccore.github.io/docs/mvccore/4.0.0/LICENCE.md
 */

namespace MvcCore\Ext\Form\Validators;

require_once(__DIR__.'/../../Form.php');
require_once(__DIR__.'/../Core/Field.php');
require_once('ValueInOptions.php');

use
    MvcCore\Ext\Form,
    MvcCore\Ext\Form\Core;

class MaxSelectedOptions extends ValueInOptions
{
    public function Validate ($submitValue, $fieldName, \MvcCore\Ext\Form\Core\Field & $field) {
        $safeValue = is_array($submitValue) ? $submitValue : array();
        $safeValueCount = count($safeValue);
        // check if there is enough options checked
        if ($field->MaxSelectedOptionsCount > 0 && $safeValueCount > $field->MaxSelectedOptionsCount) {
            $this->addError(
                $field,
                Form::$DefaultMessages[Form::CHOOSE_MAX_OPTS],
                function ($msg, $args) use (& $field) {
                    $args[] = $field->MaxSelectedOptionsCount;
                    return Core\View::Format($msg, $args);
                }
            );
        }
        return $safeValue;
    }
}