Adobe® Flex® 4 Language Reference
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mx.validators 
EmailValidator 
Packagemx.validators
Classpublic class EmailValidator
InheritanceEmailValidator Inheritance Validator Inheritance EventDispatcher Inheritance Object

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

The EmailValidator class validates that a String has a single @ sign, a period in the domain name and that the top-level domain suffix has two, three, four, or six characters. IP domain names are valid if they are enclosed in square brackets. The validator does not check whether the domain and user name actually exist.

You can use IP domain names if they are enclosed in square brackets; for example, myname@[206.132.22.1]. You can use individual IP numbers from 0 to 255.

MXML SyntaxexpandedHide MXML Syntax

The <mx:EmailValidator> tag inherits all of the tag attributes of its superclass, and adds the following tag attributes:

  <mx:EmailValidator 
    invalidCharError="Your e-mail address contains invalid characters."
    invalidDomainError= "The domain in your e-mail address is incorrectly formatted." 
    invalidIPDomainError="The IP domain in your e-mail address is incorrectly formatted." 
    invalidPeriodsInDomainError="The domain in your e-mail address has consecutive periods." 
    missingAtSignError="An at sign (&64;) is missing in your e-mail address."
    missingPeriodInDomainError="The domain in your e-mail address is missing a period." 
    missingUsernameError="The username in your e-mail address is missing." 
    tooManyAtSignsError="Your e-mail address contains too many &64; characters."
  />
  

View the examples



Public Properties
 PropertyDefined By
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
 Inheritedenabled : Boolean
Setting this value to false will stop the validator from performing validation.
Validator
  invalidCharError : String
Error message when there are invalid characters in the e-mail address.
EmailValidator
  invalidDomainError : String
Error message when the suffix (the top level domain) is not 2, 3, 4 or 6 characters long.
EmailValidator
  invalidIPDomainError : String
Error message when the IP domain is invalid.
EmailValidator
  invalidPeriodsInDomainError : String
Error message when there are continuous periods in the domain.
EmailValidator
 Inheritedlistener : Object
Specifies the validation listener.
Validator
  missingAtSignError : String
Error message when there is no at sign in the email address.
EmailValidator
  missingPeriodInDomainError : String
Error message when there is no period in the domain.
EmailValidator
  missingUsernameError : String
Error message when there is no username.
EmailValidator
 Inheritedproperty : String
A String specifying the name of the property of the source object that contains the value to validate.
Validator
 Inheritedprototype : Object
[static] A reference to the prototype object of a class or function object.
Object
 Inheritedrequired : Boolean = true
If true, specifies that a missing or empty value causes a validation error.
Validator
 InheritedrequiredFieldError : String
Error message when a value is missing and the required property is true.
Validator
 Inheritedsource : Object
Specifies the object containing the property to validate.
Validator
  tooManyAtSignsError : String
Error message when there is more than one at sign in the e-mail address.
EmailValidator
 Inheritedtrigger : IEventDispatcher
Specifies the component generating the event that triggers the validator.
Validator
 InheritedtriggerEvent : String
Specifies the event that triggers the validation.
Validator
Protected Properties
 PropertyDefined By
 InheritedactualListeners : Array
[read-only] Contains an Array of listener objects, if any, or the source object.
Validator
 InheritedactualTrigger : IEventDispatcher
[read-only] Contains the trigger object, if any, or the source object.
Validator
 InheritedresourceManager : IResourceManager
[read-only] A reference to the object which manages all of the application's localized resources.
Validator
 InheritedsubFields : Array
An Array of Strings containing the names for the properties contained in the value Object passed to the validate() method.
Validator
Public Methods
 MethodDefined By
  
Constructor.
EmailValidator
 Inherited
addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void
Registers an event listener object with an EventDispatcher object so that the listener receives notification of an event.
EventDispatcher
 Inherited
Dispatches an event into the event flow.
EventDispatcher
 Inherited
Checks whether the EventDispatcher object has any listeners registered for a specific type of event.
EventDispatcher
 Inherited
Indicates whether an object has a specified property defined.
Object
 Inherited
Called automatically by the MXML compiler when the Validator is created using an MXML tag.
Validator
 Inherited
Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.
Object
 Inherited
Indicates whether the specified property exists and is enumerable.
Object
 Inherited
removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void
Removes a listener from the EventDispatcher object.
EventDispatcher
 Inherited
Sets the availability of a dynamic property for loop operations.
Object
 Inherited
Returns the string representation of this object, formatted according to locale-specific conventions.
Object
 Inherited
Returns the string representation of the specified object.
Object
 Inherited
validate(value:Object = null, suppressEvents:Boolean = false):ValidationResultEvent
Performs validation and optionally notifies the listeners of the result.
Validator
 Inherited
validateAll(validators:Array):Array
[static] Invokes all the validators in the validators Array.
Validator
  
validateEmail(validator:EmailValidator, value:Object, baseField:String):Array
[static] Convenience method for calling a validator from within a custom validation function.
EmailValidator
 Inherited
Returns the primitive value of the specified object.
Object
 Inherited
Checks whether an event listener is registered with this EventDispatcher object or any of its ancestors for the specified event type.
EventDispatcher
Protected Methods
 MethodDefined By
 Inherited
Sets up all of the listeners for the valid and invalid events dispatched from the validator.
Validator
  
[override] Override of the base class doValidation() method to validate an e-mail address.
EmailValidator
 Inherited
Returns the Object to validate.
Validator
 Inherited
Returns a ValidationResultEvent from the Array of error results.
Validator
 Inherited
Returns true if value is not null.
Validator
 Inherited
Disconnects all of the listeners for the valid and invalid events dispatched from the validator.
Validator
 Inherited
This method is called when a Validator is constructed, and again whenever the ResourceManager dispatches a "change" Event to indicate that the localized resources have changed in some way.
Validator
Events
 Event Summary Defined By
 Inherited[broadcast event] Dispatched when the Flash Player or AIR application gains operating system focus and becomes active.EventDispatcher
 Inherited[broadcast event] Dispatched when the Flash Player or AIR application operating loses system focus and is becoming inactive.EventDispatcher
 InheritedDispatched when validation fails.Validator
 InheritedDispatched when validation succeeds.Validator
Protected Constants
 ConstantDefined By
 InheritedDECIMAL_DIGITS : String = "0123456789"
[static] A String containing the decimal digits 0 through 9.
Validator
 InheritedROMAN_LETTERS : String = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
[static] A string containing the upper- and lower-case letters of the Roman alphabet ("A" through "Z" and "a" through "z").
Validator
Property Detail

invalidCharError

property
invalidCharError:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Error message when there are invalid characters in the e-mail address.

The default value is "Your e-mail address contains invalid characters.".



Implementation
    public function get invalidCharError():String
    public function set invalidCharError(value:String):void

invalidDomainError

property 
invalidDomainError:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Error message when the suffix (the top level domain) is not 2, 3, 4 or 6 characters long.

The default value is "The domain in your e-mail address is incorrectly formatted.".



Implementation
    public function get invalidDomainError():String
    public function set invalidDomainError(value:String):void

invalidIPDomainError

property 
invalidIPDomainError:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Error message when the IP domain is invalid. The IP domain must be enclosed by square brackets.

The default value is "The IP domain in your e-mail address is incorrectly formatted.".



Implementation
    public function get invalidIPDomainError():String
    public function set invalidIPDomainError(value:String):void

invalidPeriodsInDomainError

property 
invalidPeriodsInDomainError:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Error message when there are continuous periods in the domain.

The default value is "The domain in your e-mail address has continous periods.".



Implementation
    public function get invalidPeriodsInDomainError():String
    public function set invalidPeriodsInDomainError(value:String):void

missingAtSignError

property 
missingAtSignError:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Error message when there is no at sign in the email address.

The default value is "An at sign (&64;) is missing in your e-mail address.".



Implementation
    public function get missingAtSignError():String
    public function set missingAtSignError(value:String):void

missingPeriodInDomainError

property 
missingPeriodInDomainError:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Error message when there is no period in the domain.

The default value is "The domain in your e-mail address is missing a period.".



Implementation
    public function get missingPeriodInDomainError():String
    public function set missingPeriodInDomainError(value:String):void

missingUsernameError

property 
missingUsernameError:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Error message when there is no username.

The default value is "The username in your e-mail address is missing.".



Implementation
    public function get missingUsernameError():String
    public function set missingUsernameError(value:String):void

tooManyAtSignsError

property 
tooManyAtSignsError:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Error message when there is more than one at sign in the e-mail address. This property is optional.

The default value is "Your e-mail address contains too many &64; characters.".



Implementation
    public function get tooManyAtSignsError():String
    public function set tooManyAtSignsError(value:String):void
Constructor Detail

EmailValidator

()Constructor
public function EmailValidator()

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Constructor.

Method Detail

doValidation

()method
override protected function doValidation(value:Object):Array

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Override of the base class doValidation() method to validate an e-mail address.

You do not call this method directly; Flex calls it as part of performing a validation. If you create a custom Validator class, you must implement this method.

Parameters

value:Object — Either a String or an Object to validate.

Returns
Array — An Array of ValidationResult objects, with one ValidationResult object for each field examined by the validator.

validateEmail

()method 
public static function validateEmail(validator:EmailValidator, value:Object, baseField:String):Array

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Convenience method for calling a validator from within a custom validation function. Each of the standard Flex validators has a similar convenience method.

Parameters

validator:EmailValidator — The EmailValidator instance.
 
value:Object — A field to validate.
 
baseField:String — Text representation of the subfield specified in the value parameter. For example, if the value parameter specifies value.email, the baseField value is "email".

Returns
Array — An Array of ValidationResult objects, with one ValidationResult object for each field examined by the validator.

See also

EmailValidatorExample.mxml
<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate the EmailValidator. -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
        xmlns:s="library://ns.adobe.com/flex/spark"
        xmlns:mx="library://ns.adobe.com/flex/mx">

    <fx:Script>
        import mx.controls.Alert;
    </fx:Script>

    <fx:Declarations>
        <mx:EmailValidator source="{email}" property="text" 
                trigger="{myButton}" triggerEvent="click"
                valid="Alert.show('Validation Succeeded!');"/>
    </fx:Declarations>

    <s:Panel title="EmailValidator Example"
            width="75%" height="75%"
            horizontalCenter="0" verticalCenter="0">
        <mx:Form left="10" right="10" top="10" bottom="10">
            <mx:FormItem label="Enter an e-mail address: ">
                <s:TextInput id="email" width="100%"/>
            </mx:FormItem>
            <mx:FormItem >
                <s:Button id="myButton" label="Validate" />
            </mx:FormItem>
        </mx:Form>
    </s:Panel>

</s:Application>