90 lines
3.3 KiB
PHP
90 lines
3.3 KiB
PHP
<?php
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/**
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* Rule checking that the field is empty
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*
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* PHP version 5
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*
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* LICENSE:
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*
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* Copyright (c) 2006-2010, Alexey Borzov <avb@php.net>,
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* Bertrand Mansion <golgote@mamasam.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * The names of the authors may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @category HTML
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* @package HTML_QuickForm2
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* @author Alexey Borzov <avb@php.net>
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* @author Bertrand Mansion <golgote@mamasam.com>
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* @license http://opensource.org/licenses/bsd-license.php New BSD License
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* @version SVN: $Id: Empty.php 299480 2010-05-19 06:55:03Z avb $
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* @link http://pear.php.net/package/HTML_QuickForm2
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*/
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/**
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* Base class for HTML_QuickForm2 rules
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*/
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// require_once 'HTML/QuickForm2/Rule.php';
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/**
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* Rule checking that the field is empty
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*
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* Handles both simple form fields and file uploads, the latter are considered
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* valid iff no file upload was attempted.
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*
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* The rule doesn't make much sense if used separately, but can be very helpful
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* if chained:
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* <code>
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* $spamCheck->addRule('empty')
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* ->or_($email->createRule('nonempty', 'Supply a valid email if you want to receive our spam')
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* ->and_($email->createRule('email')));
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* </code>
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*
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* @category HTML
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* @package HTML_QuickForm2
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* @author Alexey Borzov <avb@php.net>
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* @author Bertrand Mansion <golgote@mamasam.com>
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* @version Release: @package_version@
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*/
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class HTML_QuickForm2_Rule_Empty extends HTML_QuickForm2_Rule
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{
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protected function validateOwner()
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{
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$value = $this->owner->getValue();
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if (!$this->owner instanceof HTML_QuickForm2_Element_InputFile) {
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return 0 == strlen($value);
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} else {
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return isset($value['error']) && UPLOAD_ERR_NO_FILE == $value['error'];
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}
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}
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protected function getJavascriptCallback()
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{
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return "function() { return " . $this->owner->getJavascriptValue() . " == ''; }";
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}
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}
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?>
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