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<?php
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/**
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* TEmailAddressValidator class file
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @link http://www.pradosoft.com/
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* @copyright Copyright © 2005-2008 PradoSoft
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* @license http://www.pradosoft.com/license/
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* @version $Id: TEmailAddressValidator.php 2541 2008-10-21 15:05:13Z qiang.xue $
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* @package System.Web.UI.WebControls
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*/
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/**
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* Using TRegularExpressionValidator class
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*/
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Prado::using('System.Web.UI.WebControls.TRegularExpressionValidator');
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/**
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* TEmailAddressValidator class
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*
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* TEmailAddressValidator validates whether the value of an associated
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* input component is a valid email address. If {@link getCheckMXRecord CheckMXRecord}
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* is true, it will check MX record for the email adress, provided
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* checkdnsrr() is available in the installed PHP.
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @version $Id: TEmailAddressValidator.php 2541 2008-10-21 15:05:13Z qiang.xue $
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* @package System.Web.UI.WebControls
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* @since 3.0
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*/
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class TEmailAddressValidator extends TRegularExpressionValidator
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{
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/**
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* Regular expression used to validate the email address
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*/
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const EMAIL_REGEXP="\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*";
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/**
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* Gets the name of the javascript class responsible for performing validation for this control.
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* This method overrides the parent implementation.
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* @return string the javascript class name
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*/
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protected function getClientClassName()
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{
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return 'Prado.WebUI.TEmailAddressValidator';
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}
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/**
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* @return string the regular expression that determines the pattern used to validate a field.
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*/
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public function getRegularExpression()
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{
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$regex=parent::getRegularExpression();
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return $regex===''?self::EMAIL_REGEXP:$regex;
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}
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/**
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* Returns an array of javascript validator options.
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* @return array javascript validator options.
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*/
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public function evaluateIsValid()
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{
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$valid=parent::evaluateIsValid();
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if($valid && $this->getCheckMXRecord() && function_exists('checkdnsrr'))
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{
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if(($value=$this->getValidationValue($this->getValidationTarget()))!=='')
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{
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if(($pos=strpos($value,'@'))!==false)
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{
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$domain=substr($value,$pos+1);
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return $domain===''?false:checkdnsrr($domain,'MX');
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}
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else
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return false;
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}
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}
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return $valid;
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}
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/**
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* @return boolean whether to check MX record for the email address being validated. Defaults to true.
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*/
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public function getCheckMXRecord()
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{
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return $this->getViewState('CheckMXRecord',true);
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}
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/**
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* @param boolean whether to check MX record for the email address being validated.
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* Note, if {@link checkdnsrr} is not available, this check will not be performed.
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*/
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public function setCheckMXRecord($value)
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{
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$this->setViewState('CheckMXRecord',TPropertyValue::ensureBoolean($value),true);
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}
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}
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