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320 jpm 1
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4: */
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// +----------------------------------------------------------------------+
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// | PHP version 4.0                                                      |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1997-2003 The PHP Group                                |
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// +----------------------------------------------------------------------+
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// | This source file is subject to version 2.0 of the PHP license,       |
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// | that is bundled with this package in the file LICENSE, and is        |
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// | available at through the world-wide-web at                           |
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// | http://www.php.net/license/2_02.txt.                                 |
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// | If you did not receive a copy of the PHP license and are unable to   |
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// | obtain it through the world-wide-web, please send a note to          |
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// | license@php.net so we can mail you a copy immediately.               |
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// +----------------------------------------------------------------------+
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// | Authors: Bertrand Mansion <bmansion@mamasam.com>                     |
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// +----------------------------------------------------------------------+
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//
443 ddelon 19
// $Id: Callback.php,v 1.2 2005-09-20 17:01:22 ddelon Exp $
320 jpm 20
 
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require_once('HTML/QuickForm/Rule.php');
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/**
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* Validates values using callback functions or methods
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* @version     1.0
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*/
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class HTML_QuickForm_Rule_Callback extends HTML_QuickForm_Rule
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{
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    /**
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     * Array of callbacks
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     *
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     * Array is in the format:
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     * $_data['rulename'] = array('functionname', 'classname');
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     * If the callback is not a method, then the class name is not set.
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     *
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     * @var     array
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     * @access  private
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     */
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    var $_data = array();
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   /**
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    * Whether to use BC mode for specific rules
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    *
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    * Previous versions of QF passed element's name as a first parameter
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    * to validation functions, but not to validation methods. This behaviour
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    * is emulated if you are using 'function' as rule type when registering.
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    *
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    * @var array
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    * @access private
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    */
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    var $_BCMode = array();
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    /**
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     * Validates a value using a callback
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     *
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     * @param     string    $value      Value to be checked
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     * @param     mixed     $options    Options for callback
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     * @access    public
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     * @return    boolean   true if value is valid
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     */
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    function validate($value, $options = null)
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    {
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        if (isset($this->_data[$this->name])) {
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            $callback = $this->_data[$this->name];
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            if (isset($callback[1])) {
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                return call_user_func(array($callback[1], $callback[0]), $value, $options);
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            } elseif ($this->_BCMode[$this->name]) {
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                return $callback[0]('', $value, $options);
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            } else {
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                return $callback[0]($value, $options);
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            }
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        } elseif (is_callable($options)) {
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            return call_user_func($options, $value);
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        } else {
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            return true;
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        }
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    } // end func validate
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    /**
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     * Adds new callbacks to the callbacks list
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     *
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     * @param     string    $name       Name of rule
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     * @param     string    $callback   Name of function or method
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     * @param     string    $class      Name of class containing the method
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     * @param     bool      $BCMode     Backwards compatibility mode
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     * @access    public
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     */
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    function addData($name, $callback, $class = null, $BCMode = false)
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    {
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        if (!empty($class)) {
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            $this->_data[$name] = array($callback, $class);
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        } else {
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            $this->_data[$name] = array($callback);
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        }
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        $this->_BCMode[$name] = $BCMode;
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    } // end func addData
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    function getValidationScript($options = null)
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    {
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        if (isset($this->_data[$this->name])) {
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            $callback = $this->_data[$this->name][0];
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            $params   = ($this->_BCMode[$this->name]? "'', {jsVar}": '{jsVar}') .
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                        (isset($options)? ", '{$options}'": '');
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        } else {
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            $callback = is_array($options)? $options[1]: $options;
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            $params   = '{jsVar}';
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        }
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        return array('', "{jsVar} != '' && !{$callback}({$params})");
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    } // end func getValidationScript
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} // end class HTML_QuickForm_Rule_Callback
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?>