1 files changed, 98 insertions, 0 deletions
diff --git a/lib/prado/framework/Web/UI/WebControls/TEmailAddressValidator.php b/lib/prado/framework/Web/UI/WebControls/TEmailAddressValidator.php
new file mode 100644
index 0000000..bb95372
--- /dev/null
+++ b/lib/prado/framework/Web/UI/WebControls/TEmailAddressValidator.php
@@ -0,0 +1,98 @@
+<?php
+/**
+ * TEmailAddressValidator class file
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link https://github.com/pradosoft/prado
+ * @copyright Copyright &copy; 2005-2015 The PRADO Group
+ * @license https://github.com/pradosoft/prado/blob/master/COPYRIGHT
+ * @package System.Web.UI.WebControls
+ */
+
+/**
+ * Using TRegularExpressionValidator class
+ */
+Prado::using('System.Web.UI.WebControls.TRegularExpressionValidator');
+
+/**
+ * TEmailAddressValidator class
+ *
+ * TEmailAddressValidator validates whether the value of an associated
+ * input component is a valid email address. If {@link getCheckMXRecord CheckMXRecord}
+ * is true, it will check MX record for the email adress, provided
+ * checkdnsrr() is available in the installed PHP.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @package System.Web.UI.WebControls
+ * @since 3.0
+ */
+class TEmailAddressValidator extends TRegularExpressionValidator
+{
+	/**
+	 * Regular expression used to validate the email address
+	 * @see http://www.regular-expressions.info/email.html
+	 */
+	const EMAIL_REGEXP='[a-zA-Z0-9!#$%&\'*+/=?^_`{|}~-]+(?:\.[a-zA-Z0-9!#$%&\'*+/=?^_`{|}~-]+)*@(?:[a-zA-Z0-9](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?\.)+[a-zA-Z0-9](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?';
+
+	/**
+	 * Gets the name of the javascript class responsible for performing validation for this control.
+	 * This method overrides the parent implementation.
+	 * @return string the javascript class name
+	 */
+	protected function getClientClassName()
+	{
+		return 'Prado.WebUI.TEmailAddressValidator';
+	}
+
+	/**
+	 * @return string the regular expression that determines the pattern used to validate a field.
+	 */
+	public function getRegularExpression()
+	{
+		$regex=parent::getRegularExpression();
+		return $regex===''?self::EMAIL_REGEXP:$regex;
+	}
+
+	/**
+	 * Returns an array of javascript validator options.
+	 * @return array javascript validator options.
+	 */
+	public function evaluateIsValid()
+	{
+		$value=$this->getValidationValue($this->getValidationTarget());
+		$valid=$valid=is_string($value) && strlen($value)<=254 && parent::evaluateIsValid();
+
+		if($valid && $this->getCheckMXRecord() && function_exists('checkdnsrr'))
+		{
+			if($value!=='')
+			{
+				if(($pos=strpos($value,'@'))!==false)
+				{
+					$domain=substr($value,$pos+1);
+					return $domain===''?false:checkdnsrr($domain,'MX');
+				}
+				else
+					return false;
+			}
+		}
+		return $valid;
+	}
+
+	/**
+	 * @return boolean whether to check MX record for the email address being validated. Defaults to true.
+	 */
+	public function getCheckMXRecord()
+	{
+		return $this->getViewState('CheckMXRecord',false);
+	}
+
+	/**
+	 * @param boolean whether to check MX record for the email address being validated.
+	 * Note, if {@link checkdnsrr} is not available, this check will not be performed.
+	 */
+	public function setCheckMXRecord($value)
+	{
+		$this->setViewState('CheckMXRecord',TPropertyValue::ensureBoolean($value),false);
+	}
+}
+