89 lines
3.5 KiB
PHP
89 lines
3.5 KiB
PHP
<?php
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/**
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* Rule for required elements
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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: Required.php 294057 2010-01-26 21:10:28Z 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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* Rule checking that the form field is not empty
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*/
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// require_once 'HTML/QuickForm2/Rule/Nonempty.php';
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/**
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* Rule for required elements
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*
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* The main difference from "nonempty" Rule is that
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* - elements to which this Rule is attached will be considered required
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* ({@link HTML_QuickForm2_Node::isRequired()} will return true for them) and
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* marked accordingly when outputting the form
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* - this Rule can only be added directly to the element and other Rules can
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* only be added to it via and_() method
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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_Required extends HTML_QuickForm2_Rule_Nonempty
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{
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/**
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* Disallows adding a rule to the chain with an "or" operator
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*
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* Required rules are different from all others because they affect the
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* visual representation of an element ("* denotes required field").
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* Therefore we cannot allow chaining other rules to these via or_(), since
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* this will effectively mean that the field is not required anymore and the
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* visual difference is bogus.
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*
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* @param HTML_QuickForm2_Rule
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* @throws HTML_QuickForm2_Exception
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*/
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public function or_(HTML_QuickForm2_Rule $next)
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{
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throw new HTML_QuickForm2_Exception(
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'or_(): Cannot add a rule to "required" rule'
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);
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}
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}
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?>
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