Proyectos de Subversion Moodle

<?php

/**

 * DHTML replacement for the standard JavaScript alert window for client-side

 * validation

 *

 * PHP versions 4 and 5

 *

 * LICENSE: This source file is subject to version 3.01 of the PHP license

 * that is available through the world-wide-web at the following URI:

 * http://www.php.net/license/3_01.txt.  If you did not receive a copy of

 * the PHP License and are unable to obtain it through the web, please

 * send a note to license@php.net so we can mail you a copy immediately.

 *

 * @category   HTML

 * @package    HTML_QuickForm_DHTMLRulesTableless

 * @author     Alexey Borzov <borz_off@cs.msu.su>

 * @author     Adam Daniel <adaniel1@eesus.jnj.com>

 * @author     Bertrand Mansion <bmansion@mamasam.com>

 * @author     Justin Patrin <papercrane@gmail.com>

 * @author     Mark Wiesemann <wiesemann@php.net>

 * @copyright  2005-2006 The PHP Group

 * @license    http://www.php.net/license/3_01.txt  PHP License 3.01

 * @version    CVS: $Id$

 * @link       http://pear.php.net/package/HTML_QuickForm_DHTMLRulesTableless

 */

require_once 'HTML/QuickForm.php';

/**

 * This is a DHTML replacement for the standard JavaScript alert window for

 * client-side validation of forms built with HTML_QuickForm

 *

 * @category   HTML

 * @package    HTML_QuickForm_DHTMLRulesTableless

 * @author     Alexey Borzov <borz_off@cs.msu.su>

 * @author     Adam Daniel <adaniel1@eesus.jnj.com>

 * @author     Bertrand Mansion <bmansion@mamasam.com>

 * @author     Justin Patrin <papercrane@gmail.com>

 * @author     Mark Wiesemann <wiesemann@php.net>

 * @license    http://www.php.net/license/3_01.txt  PHP License 3.01

 * @version    Release: 0.1.3

 * @link       http://pear.php.net/package/HTML_QuickForm_DHTMLRulesTableless

 */

class HTML_QuickForm_DHTMLRulesTableless extends HTML_QuickForm {

    // {{{ getValidationScript()

    /**

     * Returns the client side validation script

     *

     * The code here was copied from HTML_QuickForm and slightly modified to run rules per-element

     *

     * @access    public

     * @return    string    Javascript to perform validation, empty string if no 'client' rules were added

     */

    function getValidationScript()

    {

        if (empty($this->_rules) || empty($this->_attributes['onsubmit'])) {

            return '';

        }

        include_once('HTML/QuickForm/RuleRegistry.php');

        $registry =& HTML_QuickForm_RuleRegistry::singleton();

        $test = array();

        $js_escape = array(

            "\r"    => '\r',

            "\n"    => '\n',

            "\t"    => '\t',

            "'"     => "\\'",

            '"'     => '\"',

            '\\'    => '\\\\'

        );

        foreach ($this->_rules as $elementName => $rules) {

            foreach ($rules as $rule) {

                if ('client' == $rule['validation']) {

                    unset($element);

                    $dependent  = isset($rule['dependent']) && is_array($rule['dependent']);

                    $rule['message'] = strtr($rule['message'], $js_escape);

                    if (isset($rule['group'])) {

                        $group    =& $this->getElement($rule['group']);

                        // No JavaScript validation for frozen elements

                        if ($group->isFrozen()) {

                            continue 2;

                        }

                        $elements =& $group->getElements();

                        foreach (array_keys($elements) as $key) {

                            if ($elementName == $group->getElementName($key)) {

                                $element =& $elements[$key];

                                break;

                            }

                        }

                    } elseif ($dependent) {

                        $element   =  array();

                        $element[] =& $this->getElement($elementName);

                        foreach ($rule['dependent'] as $idx => $elName) {

                            $element[] =& $this->getElement($elName);

                        }

                    } else {

                        $element =& $this->getElement($elementName);

                    }

                    // No JavaScript validation for frozen elements

                    if (is_object($element) && $element->isFrozen()) {

                        continue 2;

                    } elseif (is_array($element)) {

                        foreach (array_keys($element) as $key) {

                            if ($element[$key]->isFrozen()) {

                                continue 3;

                            }

                        }

                    }

                    $test[$elementName][] = $registry->getValidationScript($element, $elementName, $rule);

                }

            }

        }

        $js = '

<script type="text/javascript">

//<![CDATA[

function qf_errorHandler(element, _qfMsg) {

  div = element.parentNode;

  if (_qfMsg != \'\') {

    span = document.createElement("span");

    span.className = "error";

    span.appendChild(document.createTextNode(_qfMsg.substring(3)));

    br = document.createElement("br");

    var errorDiv = document.getElementById(element.name + \'_errorDiv\');

    if (!errorDiv) {

      errorDiv = document.createElement("div");

      errorDiv.id = element.name + \'_errorDiv\';

    }

    while (errorDiv.firstChild) {

      errorDiv.removeChild(errorDiv.firstChild);

    }

    errorDiv.insertBefore(br, errorDiv.firstChild);

    errorDiv.insertBefore(span, errorDiv.firstChild);

    element.parentNode.insertBefore(errorDiv, element.parentNode.firstChild);

    if (div.className.substr(div.className.length - 6, 6) != " error"

        && div.className != "error") {

      div.className += " error";

    }

    return false;

  } else {

    var errorDiv = document.getElementById(element.name + \'_errorDiv\');

    if (errorDiv) {

      errorDiv.parentNode.removeChild(errorDiv);

    }

    if (div.className.substr(div.className.length - 6, 6) == " error") {

      div.className = div.className.substr(0, div.className.length - 6);

    } else if (div.className == "error") {

      div.className = "";

    }

    return true;

  }

}';

        $validateJS = '';

        foreach ($test as $elementName => $jsArr) {

            $js .= '

function validate_' . $this->_attributes['id'] . '_' . $elementName . '(element) {

  var value = \'\';

  var errFlag = new Array();

  var _qfGroups = {};

  var _qfMsg = \'\';

  var frm = element.parentNode;

  while (frm && frm.nodeName != "FORM") {

    frm = frm.parentNode;

  }

' . join("\n", $jsArr) . '

  return qf_errorHandler(element, _qfMsg);

}

';

            $validateJS .= '

  ret = validate_' . $this->_attributes['id'] . '_' . $elementName.'(frm.elements[\''.$elementName.'\']) && ret;';

            unset($element);

            $element =& $this->getElement($elementName);

            $valFunc = 'validate_' . $this->_attributes['id'] . '_' . $elementName . '(this)';

            $onBlur = $element->getAttribute('onBlur');

            $onChange = $element->getAttribute('onChange');

            $element->updateAttributes(array('onBlur' => $onBlur . $valFunc,

                                             'onChange' => $onChange . $valFunc));

        }

        $js .= '

function validate_' . $this->_attributes['id'] . '(frm) {

  var ret = true;

' . $validateJS . ';

  return ret;

}

//]]>

</script>';

        return $js;

    } // end func getValidationScript

    // }}}

}

?>