Sequential.php

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<?php
/* Copyright (c) 2017 Stefan Hecken <stefan.hecken@concepts-and-training.de> Extended GPL, see docs/LICENSE */
 
namespace ILIAS\Validation\Constraints;
 
use ILIAS\Validation\Constraint;
use ILIAS\Data;
use ILIAS\Data\Result;
 
class Sequential extends Custom implements Constraint
{
    protected $constraints;
 
    protected $failed_constraint;
 
    public function __construct(array $constraints, Data\Factory $data_factory)
    {
        $this->constraints = $constraints;
        parent::__construct(
            function ($value) {
                foreach ($this->constraints as $key => $constraint) {
                    if (!$constraint->accepts($value)) {
                        $this->failed_constraint = $constraint;
                        return false;
                    }
                }
 
                return true;
            },
            function ($value) {
                return $this->failed_constraint->getErrorMessage($value);
            },
            $data_factory
        );
    }
}