Validator

Pakket	mx.validators
Klasse	public class Validator
Overerving	Validator EventDispatcher Object
Implementatie	IMXMLObject, IValidator
Subklassen	CreditCardValidator, CurrencyValidator, DateValidator, EmailValidator, MultiTriggerValidator, MultiTriggerValidator, NumberValidator, PhoneNumberValidator, RegExpValidator, SocialSecurityValidator, StringValidator, StyleValidator, ZipCodeValidator

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

The Validator class is the base class for all Flex validators. This class implements the ability for a validator to make a field required, which means that the user must enter a value in the field or the validation fails.

MXML-syntaxis expanded

MXML-syntaxis verbergen

The Validator class defines the following tag attributes, which all of its subclasses inherit:

  <mx:Validator 
    enabled="true|false" 
    listener="Value of the source property" 
    property="No default" 
    required="true|false" 
    requiredFieldError="This field is required." 
    source="No default" 
    trigger="Value of the source property" 
    triggerEvent="valueCommit" 
  />

Bekijk de voorbeelden

Meer voorbeelden

Using error tips
Validating data by using custom validators
Example: Creating a simple validator

Verwante API-elementen

mx.events.ValidationResultEvent
mx.validators.ValidationResult
mx.validators.RegExpValidationResult

Openbare eigenschappen

Overerfde openbare eigenschappen verbergen

Overerfde openbare eigenschappen weergeven

	Eigenschap		Gedefinieerd door
		constructor : Object Verwijzing naar het klasseobject of de constructorfunctie van een bepaalde objectinstantie.	Object
		enabled : Boolean Setting this value to false will stop the validator from performing validation.	Validator
		listener : Object Specifies the validation listener.	Validator
		property : String A String specifying the name of the property of the source object that contains the value to validate.	Validator
		required : Boolean = true If true, specifies that a missing or empty value causes a validation error.	Validator
		requiredFieldError : String Error message when a value is missing and the required property is true.	Validator
		source : Object Specifies the object containing the property to validate.	Validator
		trigger : IEventDispatcher Specifies the component generating the event that triggers the validator.	Validator
		triggerEvent : String Specifies the event that triggers the validation.	Validator

Beschermde eigenschappen

	Eigenschap		Gedefinieerd door
		actualListeners : Array [alleen-lezen] Contains an Array of listener objects, if any, or the source object.	Validator
		actualTrigger : IEventDispatcher [alleen-lezen] Contains the trigger object, if any, or the source object.	Validator
		resourceManager : IResourceManager [alleen-lezen] A reference to the object which manages all of the application's localized resources.	Validator
		subFields : Array An Array of Strings containing the names for the properties contained in the value Object passed to the validate() method.	Validator

Openbare methoden

Overerfde openbare methoden verbergen

Overerfde openbare methoden weergeven

	Methode		Gedefinieerd door
		Validator() Constructor.	Validator
		addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void Registreert een gebeurtenislistenerobject bij een object EventDispatcher, zodat de listener een melding van een gebeurtenis ontvangt.	EventDispatcher
		dispatchEvent(event:Event):Boolean Verzendt een gebeurtenis naar de gebeurtenisstroom.	EventDispatcher
		hasEventListener(type:String):Boolean Controleert of het object EventDispatcher listeners heeft geregistreerd voor een specifiek type gebeurtenis.	EventDispatcher
		hasOwnProperty(name:String):Boolean Geeft aan of voor een object een opgegeven eigenschap is gedefinieerd.	Object
		initialized(document:Object, id:String):void Called automatically by the MXML compiler when the Validator is created using an MXML tag.	Validator
		isPrototypeOf(theClass:Object):Boolean Geeft aan of een instantie van de klasse Object zich in de prototypeketen van het object bevindt dat als parameter is opgegeven.	Object
		propertyIsEnumerable(name:String):Boolean Geeft aan of de opgegeven eigenschap bestaat en kan worden opgesomd.	Object
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Verwijdert een listener uit het object EventDispatcher.	EventDispatcher
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Stelt de beschikbaarheid van een dynamische eigenschap voor lusbewerkingen in.	Object
		toLocaleString():String Geeft de tekenreeksweergave van dit object weer, geformatteerd volgens de locatiespecifieke conventies.	Object
		toString():String Retourneert een tekenreeksrepresentatie van het opgegeven object.	Object
		validate(value:Object = null, suppressEvents:Boolean = false):ValidationResultEvent Performs validation and optionally notifies the listeners of the result.	Validator
		validateAll(validators:Array):Array [statisch] Invokes all the validators in the validators Array.	Validator
		valueOf():Object Retourneert de primitieve waarde van het opgegeven object.	Object
		willTrigger(type:String):Boolean Controleert of een gebeurtenislistener is geregistreerd bij dit object EventDispatcher of een van de voorouders voor het opgegeven type gebeurtenis.	EventDispatcher

Beschermde methoden

	Methode		Gedefinieerd door
		addListenerHandler():void Sets up all of the listeners for the valid and invalid events dispatched from the validator.	Validator
		doValidation(value:Object):Array Executes the validation logic of this validator, including validating that a missing or empty value causes a validation error as defined by the value of the required property.	Validator
		getValueFromSource():Object Returns the Object to validate.	Validator
		handleResults(errorResults:Array):ValidationResultEvent Returns a ValidationResultEvent from the Array of error results.	Validator
		isRealValue(value:Object):Boolean Returns true if value is not null.	Validator
		removeListenerHandler():void Disconnects all of the listeners for the valid and invalid events dispatched from the validator.	Validator
		resourcesChanged():void 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

Gebeurtenissen

Klik voor meer informatie over gebeurtenissen.

Overerfde gebeurtenissen verbergen

Overerfde gebeurtenissen weergeven

	Overzicht	Gedefinieerd door
activate	[uitgezonden gebeurtenis] Wordt verzonden wanneer Flash Player of de AIR-toepassing de besturingssysteemfocus krijgt en actief wordt.	EventDispatcher
deactivate	[uitgezonden gebeurtenis] Wordt verzonden wanneer Flash Player of de AIR-toepassing de systeemfocus verliest en inactief wordt.	EventDispatcher
invalid	Dispatched when validation fails.	Validator
valid	Dispatched when validation succeeds.	Validator

Beschermde constanten

	Constante		Gedefinieerd door
		DECIMAL_DIGITS : String = "0123456789" [statisch] A String containing the decimal digits 0 through 9.	Validator
		ROMAN_LETTERS : String = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz" [statisch] A string containing the upper- and lower-case letters of the Roman alphabet ("A" through "Z" and "a" through "z").	Validator

Eigenschapdetails

actualListeners

eigenschap

actualListeners:Array [alleen-lezen]

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Contains an Array of listener objects, if any, or the source object. Used to determine which object to notify about the validation result.

Implementatie
protected function get actualListeners():Array

actualTrigger

eigenschap

actualTrigger:IEventDispatcher [alleen-lezen]

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Contains the trigger object, if any, or the source object. Used to determine the listener object for the triggerEvent.

Implementatie
protected function get actualTrigger():IEventDispatcher

enabled

eigenschap

enabled:Boolean

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Setting this value to false will stop the validator from performing validation. When a validator is disabled, it dispatch no events, and the validate() method returns null.

De standaardwaarde is true.

Implementatie
public function get enabled():Boolean
public function set enabled(value:Boolean):void

listener

eigenschap

listener:Object

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Specifies the validation listener.

If you do not specify a listener, Flex uses the value of the source property. After Flex determines the source component, it changes the border color of the component, displays an error message for a failure, or hides any existing error message for a successful validation.

Implementatie
public function get listener():Object
public function set listener(value:Object):void

property

eigenschap

property:String

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

A String specifying the name of the property of the source object that contains the value to validate. The property is optional, but if you specify source, you should set a value for this property as well.

De standaardwaarde is null.

Implementatie
public function get property():String
public function set property(value:String):void

required

eigenschap

public var required:Boolean = true

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

If true, specifies that a missing or empty value causes a validation error.

De standaardwaarde is true.

requiredFieldError

eigenschap

requiredFieldError:String

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Error message when a value is missing and the required property is true.

De standaardwaarde is "This field is required.".

Implementatie
public function get requiredFieldError():String
public function set requiredFieldError(value:String):void

resourceManager

eigenschap

resourceManager:IResourceManager [alleen-lezen]

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

A reference to the object which manages all of the application's localized resources. This is a singleton instance which implements the IResourceManager interface.

Deze eigenschap kan als de bron voor gegevensbinding worden gebruikt. Wanneer deze eigenschap wordt gewijzigd, wordt de gebeurtenis unused verzonden.

Implementatie
protected function get resourceManager():IResourceManager

source

eigenschap

source:Object

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Specifies the object containing the property to validate. Set this to an instance of a component or a data model. You use data binding syntax in MXML to specify the value. This property supports dot-delimited Strings for specifying nested properties. If you specify a value to the source property, then you should specify a value to the property property as well. The source property is optional.

De standaardwaarde is null.

Implementatie
public function get source():Object
public function set source(value:Object):void

subFields

eigenschap

protected var subFields:Array

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

An Array of Strings containing the names for the properties contained in the value Object passed to the validate() method. For example, CreditCardValidator sets this property to [ "cardNumber", "cardType" ]. This value means that the value Object passed to the validate() method should contain a cardNumber and a cardType property.

Subclasses of the Validator class that validate multiple data fields (like CreditCardValidator and DateValidator) should assign this property in their constructor.

trigger

eigenschap

trigger:IEventDispatcher

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Specifies the component generating the event that triggers the validator. If omitted, by default Flex uses the value of the source property. When the trigger dispatches a triggerEvent, validation executes.

Implementatie
public function get trigger():IEventDispatcher
public function set trigger(value:IEventDispatcher):void

triggerEvent

eigenschap

triggerEvent:String

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Specifies the event that triggers the validation. If omitted, Flex uses the valueCommit event. Flex dispatches the valueCommit event when a user completes data entry into a control. Usually this is when the user removes focus from the component, or when a property value is changed programmatically. If you want a validator to ignore all events, set triggerEvent to the empty string ("").

Implementatie
public function get triggerEvent():String
public function set triggerEvent(value:String):void

Constructordetails

()

Constructor

public function Validator()

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Constructor.

Methodedetails

addListenerHandler

()

methode

protected function addListenerHandler():void

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Sets up all of the listeners for the valid and invalid events dispatched from the validator. Subclasses of the Validator class should first call the removeListenerHandler() method, and then the addListenerHandler() method if the value of one of their listeners or sources changes. The CreditCardValidator and DateValidator classes use this function internally.

doValidation

()

methode

protected function doValidation(value:Object):Array

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Executes the validation logic of this validator, including validating that a missing or empty value causes a validation error as defined by the value of the required property.

If you create a subclass of a validator class, you must override this method.

Parameters

value:Object — Value to validate.

Geretourneerde waarde

Array — For an invalid result, an Array of ValidationResult objects, with one ValidationResult object for each field examined by the validator that failed validation.

Meer voorbeelden

About overriding the doValidation() method

Verwante API-elementen

mx.validators.ValidationResult

getValueFromSource

()

methode

protected function getValueFromSource():Object

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Returns the Object to validate. Subclasses, such as the CreditCardValidator and DateValidator classes, override this method because they need to access the values from multiple subfields.

Geretourneerde waarde

Object — The Object to validate.

handleResults

()

methode

protected function handleResults(errorResults:Array):ValidationResultEvent

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Returns a ValidationResultEvent from the Array of error results. Internally, this function takes the results from the doValidation() method and puts it into a ValidationResultEvent object. Subclasses, such as the RegExpValidator class, should override this function if they output a subclass of ValidationResultEvent objects, such as the RegExpValidationResult objects, and needs to populate the object with additional information. You never call this function directly, and you should rarely override it.

Parameters

errorResults:Array — Array of ValidationResult objects.

Geretourneerde waarde

ValidationResultEvent — The ValidationResultEvent returned by the validate() method.

initialized

()

methode

public function initialized(document:Object, id:String):void

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Called automatically by the MXML compiler when the Validator is created using an MXML tag.

Parameters

	`document:Object` — The MXML document containing this Validator.

	`id:String` — Ignored.

isRealValue

()

methode

protected function isRealValue(value:Object):Boolean

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Returns true if value is not null.

Parameters

value:Object — The value to test.

Geretourneerde waarde

Boolean — true if value is not null.

removeListenerHandler

()

methode

protected function removeListenerHandler():void

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Disconnects all of the listeners for the valid and invalid events dispatched from the validator. Subclasses should first call the removeListenerHandler() method and then the addListenerHandler method if the value of one of their listeners or sources changes. The CreditCardValidator and DateValidator classes use this function internally.

resourcesChanged

()

methode

protected function resourcesChanged():void

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

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.

This event will be dispatched when you set the ResourceManager's localeChain property, when a resource module has finished loading, and when you call the ResourceManager's update() method.

Subclasses should override this method and, after calling super.resourcesChanged(), do whatever is appropriate in response to having new resource values.

validate

()

methode

public function validate(value:Object = null, suppressEvents:Boolean = false):ValidationResultEvent

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Performs validation and optionally notifies the listeners of the result.

Parameters

	`value:Object` (default = `null`) — Optional value to validate. If null, then the validator uses the `source` and `property` properties to determine the value. If you specify this argument, you should also set the `listener` property to specify the target component for any validation error messages.

	`suppressEvents:Boolean` (default = `false`) — If `false`, then after validation, the validator will notify the listener of the result.

Geretourneerde waarde

ValidationResultEvent — A ValidationResultEvent object containing the results of the validation. For a successful validation, the ValidationResultEvent.results Array property is empty. For a validation failure, the ValidationResultEvent.results Array property contains one ValidationResult object for each field checked by the validator, both for fields that failed the validation and for fields that passed. Examine the ValidationResult.isError property to determine if the field passed or failed the validation.

Verwante API-elementen

mx.events.ValidationResultEvent
mx.validators.ValidationResult

validateAll

()

methode

public static function validateAll(validators:Array):Array

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Invokes all the validators in the validators Array. Returns an Array containing one ValidationResultEvent object for each validator that failed. Returns an empty Array if all validators succeed.

Parameters

validators:Array — An Array containing the Validator objects to execute.

Geretourneerde waarde

Array — Array of ValidationResultEvent objects, where the Array contains one ValidationResultEvent object for each validator that failed. The Array is empty if all validators succeed.

Gebeurtenisdetails

invalid

Gebeurtenis

Type gebeurtenisobject: mx.events.ValidationResultEvent
eigenschap ValidationResultEvent.type = mx.events.ValidationResultEvent.INVALID

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Dispatched when validation fails.

The ValidationResultEvent.INVALID constant defines the value of the type property of the event object for an invalid event. The value of this constant is "invalid".

The properties of the event object have the following values:

Property	Value
`bubbles`	false
`cancelable`	false
`currentTarget`	The Object that defines the event listener that handles the event. For example, if you use `myButton.addEventListener()` to register an event listener, myButton is the value of the `currentTarget`.
`field`	The name of the field that failed validation.
`message`	A single string that contains every error message from all of the ValidationResult objects in the results Array.
`results`	An array of ValidationResult objects, one per validated field.
`target`	The Object that dispatched the event; it is not always the Object listening for the event. Use the `currentTarget` property to always access the Object listening for the event.

valid

Gebeurtenis

Type gebeurtenisobject: mx.events.ValidationResultEvent
eigenschap ValidationResultEvent.type = mx.events.ValidationResultEvent.VALID

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

Dispatched when validation succeeds.

The ValidationResultEvent.VALID constant defines the value of the type property of the event object for a validevent. The value of this constant is "valid".

The properties of the event object have the following values:

Property	Value
`bubbles`	false
`cancelable`	false
`currentTarget`	The Object that defines the event listener that handles the event. For example, if you use `myButton.addEventListener()` to register an event listener, myButton is the value of the `currentTarget`.
`field`	An empty String.
`message`	An empty String.
`results`	An empty Array.
`target`	The Object that dispatched the event; it is not always the Object listening for the event. Use the `currentTarget` property to always access the Object listening for the event.

Constantedetails

DECIMAL_DIGITS

Constante

protected static const DECIMAL_DIGITS:String = "0123456789"

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

A String containing the decimal digits 0 through 9.

ROMAN_LETTERS

Constante

protected static const ROMAN_LETTERS:String = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"

Taalversie:

ActionScript 3.0

Productversie:

Flex 3

Runtimeversies:

Flash Player 9, AIR 1.1

A string containing the upper- and lower-case letters of the Roman alphabet ("A" through "Z" and "a" through "z").

Voorbeelden Hoe dit voorbeeld te gebruiken

SimpleValidatorExample.mxml

<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate the Validator class. -->
<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>
        <![CDATA[
            // Import necessary classes.
            import mx.controls.Alert;
            import mx.events.ValidationResultEvent;
            
            // Event listener for the valid and invalid events.
            private function handleValid(evt:ValidationResultEvent):void {
                if (evt.type == ValidationResultEvent.VALID) {
                    // Enable Submit button.
                    submitButton.enabled = true;
                } else {
                    submitButton.enabled = false;
                }
            }

            // Submit form is everything is valid. 
            private function submitForm():void {
                Alert.show("Form Submitted!");
            }
        ]]>
    </fx:Script>

    <fx:Declarations>
        <!-- The Validator class defines the required property and the validator events
             used by all validator subclasses. -->
        <mx:Validator id="reqValid" required="true"
                source="{fname}" property="text" 
                valid="handleValid(event)"
                invalid="handleValid(event);" />
    </fx:Declarations>

    <s:Panel title="Validator Example"
            width="75%" height="75%"
            horizontalCenter="0" verticalCenter="0">
        <mx:Form left="10" right="10" top="10" bottom="10">
            <mx:FormItem>
                <mx:Text width="100%" color="blue"
                        text="Enter a value in the Name field before you can submit. The E-mail field is optional."/>
            </mx:FormItem>
            <mx:FormItem label="Name: " required="true">
                <mx:TextInput id="fname" width="100%"/>
            </mx:FormItem>
            <mx:FormItem label="E-mail address: " required="false">
                <mx:TextInput id="email" width="100%"/>
            </mx:FormItem>
            <mx:FormItem>
                <mx:Button id="submitButton" enabled="false" 
                        label="Submit" click="submitForm();"/>
            </mx:FormItem>
        </mx:Form>
    </s:Panel>

</s:Application>

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Validator - AS3 Flex

Pakkettenx

Taalelementen

Bijlagen

Pakket mx.validators

actualListeners

actualTrigger

enabled

listener

property

required

requiredFieldError

resourceManager

source

subFields

trigger

triggerEvent

Validator

addListenerHandler

doValidation

getValueFromSource

handleResults

initialized

isRealValue

removeListenerHandler

resourcesChanged

validate

validateAll

invalid

valid

DECIMAL_DIGITS

ROMAN_LETTERS