494 lines
12 KiB
PHP
494 lines
12 KiB
PHP
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* Base class for form elements
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*
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* PHP versions 4 and 5
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*
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* LICENSE: This source file is subject to version 3.01 of the PHP license
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* that is available through the world-wide-web at the following URI:
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* http://www.php.net/license/3_01.txt If you did not receive a copy of
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* the PHP License and are unable to obtain it through the web, please
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* send a note to license@php.net so we can mail you a copy immediately.
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*
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* @category HTML
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* @package HTML_QuickForm
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* @author Adam Daniel <adaniel1@eesus.jnj.com>
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* @author Bertrand Mansion <bmansion@mamasam.com>
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* @author Alexey Borzov <avb@php.net>
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* @copyright 2001-2009 The PHP Group
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* @license http://www.php.net/license/3_01.txt PHP License 3.01
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* @version CVS: $Id: element.php,v 1.37 2009/04/04 21:34:02 avb Exp $
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* @link http://pear.php.net/package/HTML_QuickForm
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*/
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/**
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* Base class for all HTML classes
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*/
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require_once 'HTML/Common.php';
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/**
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* Base class for form elements
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*
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* @category HTML
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* @package HTML_QuickForm
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* @author Adam Daniel <adaniel1@eesus.jnj.com>
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* @author Bertrand Mansion <bmansion@mamasam.com>
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* @author Alexey Borzov <avb@php.net>
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* @version Release: 3.2.11
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* @since 1.0
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* @abstract
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*/
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class HTML_QuickForm_element extends HTML_Common
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{
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// {{{ properties
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/**
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* Label of the field
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* @var string
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* @since 1.3
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* @access private
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*/
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var $_label = '';
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/**
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* Form element type
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* @var string
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* @since 1.0
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* @access private
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*/
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var $_type = '';
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/**
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* Flag to tell if element is frozen
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* @var boolean
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* @since 1.0
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* @access private
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*/
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var $_flagFrozen = false;
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/**
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* Does the element support persistant data when frozen
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* @var boolean
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* @since 1.3
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* @access private
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*/
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var $_persistantFreeze = false;
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// }}}
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// {{{ constructor
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/**
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* Class constructor
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*
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* @param string Name of the element
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* @param mixed Label(s) for the element
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* @param mixed Associative array of tag attributes or HTML attributes name="value" pairs
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* @since 1.0
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* @access public
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* @return void
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*/
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function __construct($elementName=null, $elementLabel=null, $attributes=null)
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{
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parent::__construct($attributes);
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if (isset($elementName)) {
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$this->setName($elementName);
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}
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if (isset($elementLabel)) {
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$this->setLabel($elementLabel);
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}
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} //end constructor
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// }}}
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// {{{ apiVersion()
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/**
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* Returns the current API version
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*
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* @since 1.0
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* @access public
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* @return float
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*/
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function apiVersion()
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{
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return 3.2;
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} // end func apiVersion
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// }}}
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// {{{ getType()
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/**
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* Returns element type
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*
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* @since 1.0
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* @access public
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* @return string
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*/
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function getType()
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{
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return $this->_type;
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} // end func getType
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// }}}
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// {{{ setName()
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/**
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* Sets the input field name
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*
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* @param string $name Input field name attribute
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* @since 1.0
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* @access public
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* @return void
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*/
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function setName($name)
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{
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// interface method
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} //end func setName
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// }}}
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// {{{ getName()
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/**
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* Returns the element name
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*
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* @since 1.0
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* @access public
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* @return string
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*/
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function getName()
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{
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// interface method
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} //end func getName
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// }}}
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// {{{ setValue()
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/**
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* Sets the value of the form element
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*
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* @param string $value Default value of the form element
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* @since 1.0
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* @access public
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* @return void
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*/
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function setValue($value)
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{
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// interface
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} // end func setValue
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// }}}
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// {{{ getValue()
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/**
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* Returns the value of the form element
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*
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* @since 1.0
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* @access public
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* @return mixed
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*/
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function getValue()
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{
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// interface
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return null;
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} // end func getValue
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// }}}
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// {{{ freeze()
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/**
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* Freeze the element so that only its value is returned
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*
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* @access public
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* @return void
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*/
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function freeze()
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{
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$this->_flagFrozen = true;
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} //end func freeze
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// }}}
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// {{{ unfreeze()
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/**
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* Unfreezes the element so that it becomes editable
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*
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* @access public
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* @return void
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* @since 3.2.4
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*/
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function unfreeze()
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{
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$this->_flagFrozen = false;
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}
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// }}}
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// {{{ getFrozenHtml()
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/**
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* Returns the value of field without HTML tags
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*
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* @since 1.0
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* @access public
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* @return string
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*/
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function getFrozenHtml()
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{
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$value = $this->getValue();
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return (strlen($value)? htmlspecialchars($value): ' ') .
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$this->_getPersistantData();
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} //end func getFrozenHtml
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// }}}
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// {{{ _getPersistantData()
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/**
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* Used by getFrozenHtml() to pass the element's value if _persistantFreeze is on
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*
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* @access private
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* @return string
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*/
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function _getPersistantData()
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{
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if (!$this->_persistantFreeze) {
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return '';
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} else {
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$id = $this->getAttribute('id');
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return '<input' . $this->_getAttrString(array(
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'type' => 'hidden',
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'name' => $this->getName(),
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'value' => $this->getValue()
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) + (isset($id)? array('id' => $id): array())) . ' />';
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}
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}
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// }}}
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// {{{ isFrozen()
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/**
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* Returns whether or not the element is frozen
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*
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* @since 1.3
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* @access public
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* @return bool
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*/
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function isFrozen()
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{
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return $this->_flagFrozen;
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} // end func isFrozen
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// }}}
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// {{{ setPersistantFreeze()
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/**
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* Sets wether an element value should be kept in an hidden field
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* when the element is frozen or not
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*
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* @param bool $persistant True if persistant value
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* @since 2.0
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* @access public
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* @return void
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*/
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function setPersistantFreeze($persistant=false)
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{
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$this->_persistantFreeze = $persistant;
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} //end func setPersistantFreeze
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// }}}
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// {{{ setLabel()
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/**
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* Sets display text for the element
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*
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* @param string $label Display text for the element
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* @since 1.3
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* @access public
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* @return void
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*/
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function setLabel($label)
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{
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$this->_label = $label;
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} //end func setLabel
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// }}}
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// {{{ getLabel()
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/**
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* Returns display text for the element
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*
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* @since 1.3
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* @access public
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* @return string
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*/
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function getLabel()
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{
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return $this->_label;
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} //end func getLabel
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// }}}
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// {{{ _findValue()
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/**
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* Tries to find the element value from the values array
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*
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* @since 2.7
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* @access private
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* @return mixed
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*/
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function _findValue(&$values)
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{
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if (empty($values)) {
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return null;
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}
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$elementName = $this->getName();
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if (isset($values[$elementName])) {
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return $values[$elementName];
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} elseif (strpos($elementName, '[')) {
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$myVar = "['" . str_replace(
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array('\\', '\'', ']', '['), array('\\\\', '\\\'', '', "']['"),
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$elementName
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) . "']";
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return eval("return (isset(\$values$myVar)) ? \$values$myVar : null;");
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} else {
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return null;
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}
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} //end func _findValue
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// }}}
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// {{{ onQuickFormEvent()
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/**
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* Called by HTML_QuickForm whenever form event is made on this element
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*
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* @param string $event Name of event
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* @param mixed $arg event arguments
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* @param object &$caller calling object
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* @since 1.0
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* @access public
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* @return void
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*/
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function onQuickFormEvent($event, $arg, &$caller)
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{
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switch ($event) {
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case 'createElement':
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$this->__construct($arg[0], $arg[1], $arg[2], $arg[3], $arg[4]);
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break;
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case 'addElement':
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$this->onQuickFormEvent('createElement', $arg, $caller);
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$this->onQuickFormEvent('updateValue', null, $caller);
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break;
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case 'updateValue':
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// constant values override both default and submitted ones
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// default values are overriden by submitted
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$value = $this->_findValue($caller->_constantValues);
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if (null === $value) {
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$value = $this->_findValue($caller->_submitValues);
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if (null === $value) {
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$value = $this->_findValue($caller->_defaultValues);
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}
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}
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if (null !== $value) {
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$this->setValue($value);
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}
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break;
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case 'setGroupValue':
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$this->setValue($arg);
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}
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return true;
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} // end func onQuickFormEvent
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// }}}
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// {{{ accept()
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/**
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* Accepts a renderer
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*
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* @param HTML_QuickForm_Renderer renderer object
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* @param bool Whether an element is required
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* @param string An error message associated with an element
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* @access public
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* @return void
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*/
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function accept(&$renderer, $required=false, $error=null)
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{
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$renderer->renderElement($this, $required, $error);
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} // end func accept
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// }}}
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// {{{ _generateId()
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/**
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* Automatically generates and assigns an 'id' attribute for the element.
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*
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* Currently used to ensure that labels work on radio buttons and
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* checkboxes. Per idea of Alexander Radivanovich.
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*
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* @access private
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* @return void
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*/
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function _generateId()
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{
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static $idx = 1;
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if (!$this->getAttribute('id')) {
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$this->updateAttributes(array('id' => 'qf_' . substr(md5(microtime() . $idx++), 0, 6)));
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}
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} // end func _generateId
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// }}}
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// {{{ exportValue()
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/**
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* Returns a 'safe' element's value
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*
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* @param array array of submitted values to search
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* @param bool whether to return the value as associative array
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* @access public
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* @return mixed
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*/
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function exportValue(&$submitValues, $assoc = false)
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{
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$value = $this->_findValue($submitValues);
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if (null === $value) {
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$value = $this->getValue();
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}
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return $this->_prepareValue($value, $assoc);
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}
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// }}}
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// {{{ _prepareValue()
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/**
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* Used by exportValue() to prepare the value for returning
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*
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* @param mixed the value found in exportValue()
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* @param bool whether to return the value as associative array
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* @access private
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* @return mixed
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*/
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function _prepareValue($value, $assoc)
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{
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if (null === $value) {
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return null;
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} elseif (!$assoc) {
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return $value;
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} else {
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$name = $this->getName();
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if (!strpos($name, '[')) {
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return array($name => $value);
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} else {
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$valueAry = array();
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$myIndex = "['" . str_replace(
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array('\\', '\'', ']', '['), array('\\\\', '\\\'', '', "']['"),
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$name
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) . "']";
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eval("\$valueAry$myIndex = \$value;");
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return $valueAry;
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}
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}
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}
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// }}}
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} // end class HTML_QuickForm_element
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?>
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