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File: FormValidatorInSet.inc.php

<?php

/**
 * @file classes/form/validation/FormValidatorInSet.inc.php
 *
 * Copyright (c) 2014-2021 Simon Fraser University
 * Copyright (c) 2000-2021 John Willinsky
 * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
 *
 * @class FormValidatorInSet
 * @ingroup form_validation
 *
 * @brief Form validation check that checks if value is within a certain set.
 */

import('lib.pkp.classes.form.validation.FormValidator');

class FormValidatorInSet extends FormValidator {

	/** @var array of all values accepted as valid */
	var $_acceptedValues;

	/**
	 * Constructor.
	 * @param $form Form the associated form
	 * @param $field string the name of the associated field
	 * @param $type string the type of check, either "required" or "optional"
	 * @param $message string the error message for validation failures (i18n key)
	 * @param $acceptedValues array all possible accepted values
	 */
	function __construct(&$form, $field, $type, $message, $acceptedValues) {
		parent::__construct($form, $field, $type, $message);
		$this->_acceptedValues = $acceptedValues;
	}


	//
	// Public methods
	//
	/**
	 * Value is valid if it is empty and optional or is in the set of accepted values.
	 * @see FormValidator::isValid()
	 * @return boolean
	 */
	function isValid() {
		return $this->isEmptyAndOptional() || in_array($this->getFieldValue(), $this->_acceptedValues);
	}
}