<?php

namespace {
    /**
     * Rule checking that the field is not empty
     *
     * PHP version 5
     *
     * LICENSE:
     *
     * Copyright (c) 2006-2010, Alexey Borzov <avb@php.net>,
     *                          Bertrand Mansion <golgote@mamasam.com>
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     *
     *    * Redistributions of source code must retain the above copyright
     *      notice, this list of conditions and the following disclaimer.
     *    * Redistributions in binary form must reproduce the above copyright
     *      notice, this list of conditions and the following disclaimer in the
     *      documentation and/or other materials provided with the distribution.
     *    * The names of the authors may not be used to endorse or promote products
     *      derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
     * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * @category   HTML
     * @package    HTML_QuickForm2
     * @author     Alexey Borzov <avb@php.net>
     * @author     Bertrand Mansion <golgote@mamasam.com>
     * @license    http://opensource.org/licenses/bsd-license.php New BSD License
     * @version    SVN: $Id: Nonempty.php 299706 2010-05-24 18:32:37Z avb $
     * @link       http://pear.php.net/package/HTML_QuickForm2
     */
    /**
     * Base class for HTML_QuickForm2 rules
     */
    // require_once 'HTML/QuickForm2/Rule.php';
    /**
     * Rule checking that the field is not empty
     *
     * Handles simple form fields, file uploads and Containers.
     *
     * When validating <select multiple> fields and Containers it may use an
     * optional configuration parameter for minimum number of nonempty values,
     * defaulting to 1. It can be passed either to
     * {@link HTML_QuickForm2_Rule::__construct() the Rule constructor} as local
     * configuration or to {@link HTML_QuickForm2_Factory::registerRule()} as
     * global one. As usual, global configuration overrides local.
     *
     * <code>
     * // Required rule is 'nonempty' with a bit of special handling
     * $login->addRule('required', 'Please provide your login');
     * $multiSelect->addRule('required', 'Please select at least two options', 2);
     * </code>
     *
     * @category   HTML
     * @package    HTML_QuickForm2
     * @author     Alexey Borzov <avb@php.net>
     * @author     Bertrand Mansion <golgote@mamasam.com>
     * @version    Release: @package_version@
     */
    class HTML_QuickForm2_Rule_Nonempty extends \HTML_QuickForm2_Rule
    {
        protected function validateOwner()
        {
            if ($this->owner instanceof \HTML_QuickForm2_Container) {
                $nonempty = 0;
                foreach ($this->owner->getRecursiveIterator(\RecursiveIteratorIterator::LEAVES_ONLY) as $child) {
                    $rule = new self($child);
                    if ($rule->validateOwner()) {
                        $nonempty++;
                    }
                }
                return $nonempty >= $this->getConfig();
            }
            $value = $this->owner->getValue();
            if ($this->owner instanceof \HTML_QuickForm2_Element_InputFile) {
                return isset($value['error']) && \UPLOAD_ERR_OK == $value['error'];
            } elseif (\is_array($value)) {
                return \count(\array_filter($value, 'strlen')) >= $this->getConfig();
            } else {
                return (bool) \strlen($value ?? '');
            }
        }
        /**
         * Sets minimum number of nonempty values
         *
         * This is useful for multiple selects and Containers, will be ignored for
         * all other elements. Defaults to 1, thus multiple select will be
         * considered not empty if at least one option is selected, Container will
         * be considered not empty if at least one contained element is not empty.
         *
         * @param    int     Maximum allowed size
         * @return   HTML_QuickForm2_Rule
         * @throws   HTML_QuickForm2_InvalidArgumentException    if a bogus size limit was provided
         */
        public function setConfig($config)
        {
            if (\is_null($config)) {
                $config = 1;
            } elseif (1 > \intval($config)) {
                throw new \HTML_QuickForm2_InvalidArgumentException('Nonempty Rule accepts a positive count of nonempty values, ' . \preg_replace('/\\s+/', ' ', \var_export($config, \true)) . ' given');
            }
            return parent::setConfig(\intval($config));
        }
        protected function getJavascriptCallback()
        {
            $js = "function() {var value = " . $this->owner->getJavascriptValue() . ";";
            if (!$this->owner instanceof \HTML_QuickForm2_Container) {
                $js .= " if (!value instanceof Array) { return value != ''; } else { " . "var valid = 0; for (var i = 0; i < value.length; i++) { " . "if ('' != value[i]) { valid++; } } return valid >= " . $this->getConfig() . "; } }";
            } else {
                $js .= " var values = value.getValues(); var valid = 0; " . "for (var i = 0; i < values.length; i++) { " . "if ('' != values[i]) { valid++; } } return valid >= " . $this->getConfig() . "; }";
            }
            return $js;
        }
    }
}
