CurrencyValidator

Pacchetto	mx.validators
Classe	public class CurrencyValidator
Ereditarietà	CurrencyValidator Validator EventDispatcher Object

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

A partire da Flex 4.5, Adobe consiglia di utilizzare la classe spark.validators.CurrencyValidator come alternativa a questa classe.

The CurrencyValidator class ensures that a String represents a valid currency expression. It can make sure the input falls within a given range (specified by minValue and maxValue), is non-negative (specified by allowNegative), and does not exceed the specified precision. The CurrencyValidator class correctly validates formatted and unformatted currency expressions, e.g., "$12,345.00" and "12345". You can customize the currencySymbol, alignSymbol, thousandsSeparator, and decimalSeparator properties for internationalization.

Sintassi MXML expanded

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

  <mx:CurrencyValidator
    alignSymbol="left|right|any"
    allowNegative="true|false"
    currencySymbol="$"
    currencySymbolError="The currency symbol occurs in an invalid location."
    decimalPointCountError="The decimal separator can occur only once."
    decimalSeparator="."
    exceedsMaxError="The amount entered is too large."
    invalidCharError="The input contains invalid characters."
    invalidFormatCharsError="One of the formatting parameters is invalid."
    lowerThanMinError="The amount entered is too small."
    maxValue="NaN"
    minValue="NaN"
    negativeError="The amount may not be negative."
    precision="2"
    precisionError="The amount entered has too many digits beyond the decimal point."
    separationError="The thousands separator must be followed by three digits."
    thousandsSeparator=","
  />

Vedere gli esempi

Elementi API correlati

mx.validators.CurrencyValidatorAlignSymbol

Proprietà pubbliche

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	Proprietà		Definito da
		alignSymbol : String Specifies the alignment of the currencySymbol relative to the rest of the expression.	CurrencyValidator
		allowNegative : Object Specifies whether negative numbers are permitted.	CurrencyValidator
		constructor : Object Un riferimento all'oggetto classe o alla funzione di costruzione per una determinata istanza di oggetto.	Object
		currencySymbol : String The character String used to specify the currency symbol, such as "$", "R$", or "£".	CurrencyValidator
		currencySymbolError : String Error message when the currency symbol, defined by currencySymbol, is in the wrong location.	CurrencyValidator
		decimalPointCountError : String Error message when the decimal separator character occurs more than once.	CurrencyValidator
		decimalSeparator : String The character used to separate the whole from the fractional part of the number.	CurrencyValidator
		enabled : Boolean Setting this value to false will stop the validator from performing validation.	Validator
		exceedsMaxError : String Error message when the value is greater than maxValue.	CurrencyValidator
		invalidCharError : String Error message when the currency contains invalid characters.	CurrencyValidator
		invalidFormatCharsError : String Error message when the value contains an invalid formatting character.	CurrencyValidator
		listener : Object Specifies the validation listener.	Validator
		lowerThanMinError : String Error message when the value is less than minValue.	CurrencyValidator
		maxValue : Object Maximum value for a valid number.	CurrencyValidator
		minValue : Object Minimum value for a valid number.	CurrencyValidator
		negativeError : String Error message when the value is negative and the allowNegative property is false.	CurrencyValidator
		precision : Object The maximum number of digits allowed to follow the decimal point.	CurrencyValidator
		precisionError : String Error message when the value has a precision that exceeds the value defined by the precision property.	CurrencyValidator
		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
		separationError : String Error message when the thousands separator is incorrectly placed.	CurrencyValidator
		source : Object Specifies the object containing the property to validate.	Validator
		thousandsSeparator : String The character used to separate thousands.	CurrencyValidator
		trigger : IEventDispatcher Specifies the component generating the event that triggers the validator.	Validator
		triggerEvent : String Specifies the event that triggers the validation.	Validator

Proprietà protette

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	Proprietà		Definito da
		actualListeners : Array [sola lettura] Contains an Array of listener objects, if any, or the source object.	Validator
		actualTrigger : IEventDispatcher [sola lettura] Contains the trigger object, if any, or the source object.	Validator
		resourceManager : IResourceManager [sola lettura] 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

Metodi pubblici

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	Metodo		Definito da
		CurrencyValidator() Constructor.	CurrencyValidator
		addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void Registra un oggetto listener di eventi con un oggetto EventDispatcher, in modo che il listener riceva la notifica di un evento.	EventDispatcher
		dispatchEvent(event:Event):Boolean Invia un evento nel flusso di eventi.	EventDispatcher
		hasEventListener(type:String):Boolean Verifica se per l'oggetto EventDispatcher sono presenti listener registrati per un tipo specifico di evento.	EventDispatcher
		hasOwnProperty(name:String):Boolean Indica se per un oggetto è definita una proprietà specifica.	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 Indica se un'istanza della classe Object si trova nella catena di prototipi dell'oggetto specificato come parametro.	Object
		propertyIsEnumerable(name:String):Boolean Indica se la proprietà specificata esiste ed è enumerabile.	Object
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Rimuove un listener dall'oggetto EventDispatcher.	EventDispatcher
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Imposta la disponibilità di una proprietà dinamica per le operazioni cicliche.	Object
		toLocaleString():String Restituisce la rappresentazione in formato stringa di questo oggetto, formattato in base alle convenzioni specifiche per le versioni localizzate.	Object
		toString():String Restituisce la rappresentazione in formato stringa dell'oggetto specificato.	Object
		validate(value:Object = null, suppressEvents:Boolean = false):ValidationResultEvent Performs validation and optionally notifies the listeners of the result.	Validator
		validateAll(validators:Array):Array [statico] Invokes all the validators in the validators Array.	Validator
		validateCurrency(validator:CurrencyValidator, value:Object, baseField:String):Array [statico] Convenience method for calling a validator.	CurrencyValidator
		valueOf():Object Restituisce il valore di base dell'oggetto specificato.	Object
		willTrigger(type:String):Boolean Verifica se un listener di eventi è registrato con questo oggetto EventDispatcher o qualsiasi suo antenato per il tipo di evento specificato.	EventDispatcher

Metodi protetti

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	Metodo		Definito da
		addListenerHandler():void Sets up all of the listeners for the valid and invalid events dispatched from the validator.	Validator
		doValidation(value:Object):Array [override] Override of the base class doValidation() method to validate a currency expression.	CurrencyValidator
		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

Eventi

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	Riepilogo	Definito da
activate	[evento di trasmissione] Inviato quando Flash Player o l'applicazione AIR ottiene lo stato di attivazione del sistema operativo ed entra nello stato attivo.	EventDispatcher
deactivate	[evento di trasmissione] Inviato quando Flash Player o l'applicazione AIR perde l'attivazione del sistema operativo e sta entrando nello stato inattivo.	EventDispatcher
invalid	Dispatched when validation fails.	Validator
valid	Dispatched when validation succeeds.	Validator

Costanti protette

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	Costante		Definito da

Descrizione delle proprietà

alignSymbol

proprietà

alignSymbol:String

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Specifies the alignment of the currencySymbol relative to the rest of the expression. Acceptable values in ActionScript are CurrencyValidatorAlignSymbol.LEFT, CurrencyValidatorAlignSymbol.RIGHT, and CurrencyValidatorAlignSymbol.ANY. Acceptable values in MXML are "left", "right", and "any".

Il valore predefinito è CurrencyValidatorAlignSymbol.LEFT.

Implementazione
public function get alignSymbol():String
public function set alignSymbol(value:String):void

Elementi API correlati

mx.validators.CurrencyValidatorAlignSymbol

allowNegative

proprietà

allowNegative:Object

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Specifies whether negative numbers are permitted. Can be true or false.

Il valore predefinito è true.

Implementazione
public function get allowNegative():Object
public function set allowNegative(value:Object):void

currencySymbol

proprietà

currencySymbol:String

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

The character String used to specify the currency symbol, such as "$", "R$", or "£". Cannot be a digit and must be distinct from the thousandsSeparator and the decimalSeparator.

Il valore predefinito è "$".

Implementazione
public function get currencySymbol():String
public function set currencySymbol(value:String):void

currencySymbolError

proprietà

currencySymbolError:String

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Error message when the currency symbol, defined by currencySymbol, is in the wrong location.

Il valore predefinito è "The currency symbol occurs in an invalid location.".

Implementazione
public function get currencySymbolError():String
public function set currencySymbolError(value:String):void

decimalPointCountError

proprietà

decimalPointCountError:String

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Error message when the decimal separator character occurs more than once.

Il valore predefinito è "The decimal separator can only occur once.".

Implementazione
public function get decimalPointCountError():String
public function set decimalPointCountError(value:String):void

decimalSeparator

proprietà

decimalSeparator:String

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

The character used to separate the whole from the fractional part of the number. Cannot be a digit and must be distinct from the currencySymbol and the thousandsSeparator.

Il valore predefinito è ".".

Implementazione
public function get decimalSeparator():String
public function set decimalSeparator(value:String):void

exceedsMaxError

proprietà

exceedsMaxError:String

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Error message when the value is greater than maxValue.

Il valore predefinito è "The amount entered is too large.".

Implementazione
public function get exceedsMaxError():String
public function set exceedsMaxError(value:String):void

invalidCharError

proprietà

invalidCharError:String

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Error message when the currency contains invalid characters.

Il valore predefinito è "The input contains invalid characters.".

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

invalidFormatCharsError

proprietà

invalidFormatCharsError:String

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Error message when the value contains an invalid formatting character.

Il valore predefinito è "One of the formatting parameters is invalid.".

Implementazione
public function get invalidFormatCharsError():String
public function set invalidFormatCharsError(value:String):void

lowerThanMinError

proprietà

lowerThanMinError:String

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Error message when the value is less than minValue.

Il valore predefinito è "The amount entered is too small.".

Implementazione
public function get lowerThanMinError():String
public function set lowerThanMinError(value:String):void

maxValue

proprietà

maxValue:Object

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Maximum value for a valid number. A value of NaN means it is ignored.

Il valore predefinito è NaN.

Implementazione
public function get maxValue():Object
public function set maxValue(value:Object):void

minValue

proprietà

minValue:Object

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Minimum value for a valid number. A value of NaN means it is ignored.

Il valore predefinito è NaN.

Implementazione
public function get minValue():Object
public function set minValue(value:Object):void

negativeError

proprietà

negativeError:String

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Error message when the value is negative and the allowNegative property is false.

Il valore predefinito è "The amount may not be negative.".

Implementazione
public function get negativeError():String
public function set negativeError(value:String):void

precision

proprietà

precision:Object

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

The maximum number of digits allowed to follow the decimal point. Can be any non-negative integer. Note: Setting to 0 has the same effect as setting NumberValidator.domain to int. Setting it to -1, means it is ignored.

Il valore predefinito è 2.

Implementazione
public function get precision():Object
public function set precision(value:Object):void

precisionError

proprietà

precisionError:String

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Error message when the value has a precision that exceeds the value defined by the precision property.

Il valore predefinito è "The amount entered has too many digits beyond the decimal point.".

Implementazione
public function get precisionError():String
public function set precisionError(value:String):void

separationError

proprietà

separationError:String

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Error message when the thousands separator is incorrectly placed.

Il valore predefinito è "The thousands separator must be followed by three digits.".

Implementazione
public function get separationError():String
public function set separationError(value:String):void

thousandsSeparator

proprietà

thousandsSeparator:String

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

The character used to separate thousands. Cannot be a digit and must be distinct from the currencySymbol and the decimalSeparator.

Il valore predefinito è ",".

Implementazione
public function get thousandsSeparator():String
public function set thousandsSeparator(value:String):void

Descrizione della funzione di costruzione

()

Funzione di costruzione

public function CurrencyValidator()

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Constructor.

Descrizione dei metodi

doValidation

()

metodo

override protected function doValidation(value:Object):Array

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Override of the base class doValidation() method to validate a currency expression.

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.

Parametri

value:Object — Object to validate.

Restituisce

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

validateCurrency

()

metodo

public static function validateCurrency(validator:CurrencyValidator, value:Object, baseField:String):Array

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 3

Versioni runtime:

Flash Player 9, AIR 1.1

Convenience method for calling a validator. Each of the standard Flex validators has a similar convenience method.

Parametri

	`validator:CurrencyValidator` — The CurrencyValidator instance.

	`value:Object` — The object to validate.

	`baseField:String` — Text representation of the subfield specified in the `value` parameter. For example, if the `value` parameter specifies value.currency, the baseField value is "currency".

Restituisce

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

Elementi API correlati

mx.validators.ValidationResult

Esempi Come utilizzare questo esempio

CurrencyValidatorExample.mxml

<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate the CurrencyValidator. -->
<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:CurrencyValidator source="{priceUS}" property="text" precision="2" 
                trigger="{myButton}" triggerEvent="click" 
                valid="Alert.show('Validation Succeeded!');"/>
    </fx:Declarations>

    <s:Panel title="CurrencyValidator Example"
            width="75%" height="75%"
            horizontalCenter="0" verticalCenter="0">
        <mx:Form left="10" right="10" top="10" bottom="10">
            <mx:FormItem label="Enter a U.S. dollar amount: ">
                 <s:TextInput id="priceUS" width="100%"/>
            </mx:FormItem>
            <mx:FormItem >
                <s:Button id="myButton" label="Validate"/>
            </mx:FormItem>
        </mx:Form>
    </s:Panel>

</s:Application>

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CurrencyValidator - AS3 Flex

Pacchettix

Elementi del linguaggio

Appendici

Pacchetto mx.validators

alignSymbol

allowNegative

currencySymbol

currencySymbolError

decimalPointCountError

decimalSeparator

exceedsMaxError

invalidCharError

invalidFormatCharsError

lowerThanMinError

maxValue

minValue

negativeError

precision

precisionError

separationError

thousandsSeparator