NumberValidator

Pacchetto	spark.validators
Classe	public class NumberValidator
Ereditarietà	NumberValidator NumberValidatorBase GlobalizationValidatorBase GlobalizationBase AdvancedStyleClient EventDispatcher Object

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 4.5

Versioni runtime:

Flash Player 10.1, AIR 2.5

The NumberValidator class ensures that a String represents a valid number according to the conventions of a locale. It can validate strings that represent int,uint, and Number objects.

This class uses the locale style for specifying the requested locale ID.

The validator can ensure that the input falls within a given range (specified by minValue and maxValue properties), is an integer (specified by domain property), is non-negative (specified by allowNegative property), correctly specifies negative and positive numbers, and does not exceed the specified number offractionalDigits. The validator sets default property values by making use of the flash.globalization.NumberFormatter and therefore the locale specific values are supplied by the operating system.

The NumberValidator class can be used in MXML declarations or in ActionScript code. This class uses the locale style for specifying the requested Locale ID required by the flash.globalization.NumberFormatter class, and has methods and properties that are bindable.

Sintassi MXML expanded

Nascondi sintassi MXML

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

  <s:NumberValidator
    Properties
    negativeNumberFormat="locale specified string or customized by user."
    negativeNumberFormatError="The negative format of the input number is incorrect."
  />

Vedere gli esempi

Elementi API correlati

flash.globalization.NumberFormatter

Proprietà pubbliche

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	Proprietà		Definito da
		actualLocaleIDName : String [sola lettura] The name of the actual locale ID used by this class object.	GlobalizationBase
		allowNegative : Boolean Specifies whether negative numbers are permitted.	NumberValidatorBase
		className : String [sola lettura] The name of the component class.	AdvancedStyleClient
		constructor : Object Un riferimento all'oggetto classe o alla funzione di costruzione per una determinata istanza di oggetto.	Object
		decimalPointCountError : String Error message when the decimal separator character occurs more than once.	NumberValidatorBase
		decimalSeparator : String The decimal separator character used for validating numbers that have a decimal part.	NumberValidatorBase
		digitsType : uint Defines the set of digit characters to be used when validating numbers.	NumberValidatorBase
		domain : String Type of number to be validated.	NumberValidatorBase
		enabled : Boolean Setting this value to false will stop the validator from performing validation.	GlobalizationValidatorBase
		fractionalDigits : int The maximum number of digits that can appear after the decimal separator.	NumberValidatorBase
		fractionalDigitsError : String Error message when fraction digits exceeds the value specified by the fractionalDigits property.	NumberValidatorBase
		greaterThanMaxError : String Error message when the value exceeds the maxValue property.	NumberValidatorBase
		groupingSeparator : String The character or string used for the grouping separator.	NumberValidatorBase
		id : String The identity of the component.	AdvancedStyleClient
		inheritingStyles : Object An object containing the inheritable styles for this non-visual style client instance.	AdvancedStyleClient
		invalidCharError : String Error message when the value contains invalid characters.	NumberValidatorBase
		invalidFormatCharsError : String Error message when the value contains invalid format characters, which means that it contains a digit or minus sign (-) as a separator character, or it contains two or more consecutive separator characters.	NumberValidatorBase
		lastOperationStatus : String [override] [sola lettura] The status of the most recent operation that this class object performed.	NumberValidatorBase
		lessThanMinError : String Error message when the value is less than the minValue.	NumberValidatorBase
		listener : Object Specifies the validation listener.	GlobalizationValidatorBase
		localeUndefinedError : String Error message when the locale is undefined or is not available.	NumberValidatorBase
		maxValue : Number Maximum value for a valid number.	NumberValidatorBase
		minValue : Number Minimum value for a valid number.	NumberValidatorBase
		moduleFactory : IFlexModuleFactory A module factory is used as context for finding the style manager that controls the styles for this non-visual style client instance.	AdvancedStyleClient
		negativeError : String Error message when the value is negative and the allowNegative property is false.	NumberValidatorBase
		negativeNumberFormat : uint A numeric value that indicates a validating pattern for negative numbers.	NumberValidator
		negativeNumberFormatError : String Error message when the input number's negative number format is not following the pattern specified by the negativeNumberFormat property.	NumberValidator
		negativeSymbol : String [sola lettura] The negative symbol to be used when validating negative values.	NumberValidatorBase
		negativeSymbolError : String Error message when the negative symbol is repeated or is in wrong place.	NumberValidatorBase
		nonInheritingStyles : Object The beginning of this component's chain of non-inheriting styles.	AdvancedStyleClient
		notAnIntegerError : String Error message when the number must be an integer, as defined by the domain property.	NumberValidatorBase
		parseError : String Error message when number could not be parsed.	NumberValidatorBase
		property : String A String specifying the name of the property of the source object that contains the value to validate.	GlobalizationValidatorBase
		required : Boolean = true If true, specifies that a missing or empty value causes a validation error.	GlobalizationValidatorBase
		requiredFieldError : String Error message when a value is missing and the required property is true.	GlobalizationValidatorBase
		source : Object Specifies the object containing the property to validate.	GlobalizationValidatorBase
		styleDeclaration : CSSStyleDeclaration The style declaration that holds the inline styles declared by this object.	AdvancedStyleClient
		styleManager : IStyleManager2 [sola lettura] Returns the StyleManager instance used by this component.	AdvancedStyleClient
		styleName : Object The source of this object's style values.	AdvancedStyleClient
		styleParent : IAdvancedStyleClient A component's parent is used to evaluate descendant selectors.	AdvancedStyleClient
		trigger : IEventDispatcher Specifies the component generating the event that triggers the validator.	GlobalizationValidatorBase
		triggerEvent : String Specifies the event that triggers the validation.	GlobalizationValidatorBase

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.	GlobalizationValidatorBase
		actualTrigger : IEventDispatcher [sola lettura] Contains the trigger object, if any, or the source object.	GlobalizationValidatorBase
		resourceManager : IResourceManager [sola lettura] A reference to the object which manages all of the application's localized resources.	GlobalizationValidatorBase
		subFields : Array An Array of Strings containing the names for the properties contained in the value Object passed to the validate() method.	GlobalizationValidatorBase

Metodi pubblici

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	Metodo		Definito da
		NumberValidator() Constructs a new NumberValidator object to validate numbers according to the conventions of a given locale.	NumberValidator
		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
		clearStyle(styleProp:String):void Deletes a style property from this component instance.	AdvancedStyleClient
		dispatchEvent(event:Event):Boolean Invia un evento nel flusso di eventi.	EventDispatcher
		getClassStyleDeclarations():Array Returns an Array of CSSStyleDeclaration objects for the type selector that applies to this component, or null if none exist.	AdvancedStyleClient
		getStyle(styleProp:String):* [override] Gets a style property that has been set anywhere in this component's style lookup chain.	GlobalizationBase
		hasCSSState():Boolean Returns true if currentCSSState is not null.	AdvancedStyleClient
		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 The initialized method is called when this class or a class that extends this class is used in an MXML declaration.	AdvancedStyleClient
		isPrototypeOf(theClass:Object):Boolean Indica se un'istanza della classe Object si trova nella catena di prototipi dell'oggetto specificato come parametro.	Object
		matchesCSSState(cssState:String):Boolean Returns true if cssState matches currentCSSState.	AdvancedStyleClient
		matchesCSSType(cssType:String):Boolean Determines whether this instance is the same as, or is a subclass of, the given type.	AdvancedStyleClient
		notifyStyleChangeInChildren(styleProp:String, recursive:Boolean):void Propagates style changes to the children of this style client instance.	AdvancedStyleClient
		propertyIsEnumerable(name:String):Boolean Indica se la proprietà specificata esiste ed è enumerabile.	Object
		regenerateStyleCache(recursive:Boolean):void Sets up the internal style cache values so that the getStyle() method functions.	AdvancedStyleClient
		registerEffects(effects:Array):void Registers the EffectManager as one of the event listeners for each effect event.	AdvancedStyleClient
		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
		setStyle(styleProp:String, newValue:*):void Sets a style property on this component instance.	AdvancedStyleClient
		styleChanged(styleProp:String):void Detects changes to style properties.	AdvancedStyleClient
		stylesInitialized():void Flex calls the stylesInitialized() method when the styles for a component are first initialized.	AdvancedStyleClient
		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.	GlobalizationValidatorBase
		validateAll(validators:Array):Array [statico] Invokes all the validators in the validators Array.	GlobalizationValidatorBase
		validateNumber(value:Object, baseField:String):Array Convenience method for calling a validator from within a custom validation function.	NumberValidator
		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.	GlobalizationValidatorBase
		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.	GlobalizationValidatorBase
		getValueFromSource():Object Returns the Object to validate.	GlobalizationValidatorBase
		handleResults(errorResults:Array):ValidationResultEvent Returns a ValidationResultEvent from the Array of error results.	GlobalizationValidatorBase
		isRealValue(value:Object):Boolean Returns true if value is not null.	GlobalizationValidatorBase
		removeListenerHandler():void Disconnects all of the listeners for the valid and invalid events dispatched from the validator.	GlobalizationValidatorBase
		resourcesChanged():void This method is called when a GlobalizationValidatorBase is constructed, and again whenever the ResourceManager dispatches a "change" Event to indicate that the localized resources have changed in some way.	GlobalizationValidatorBase

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
change	The change event is generated whenever the locale style is changed or another property is set that would cause the format of a number to change or cause updates to the other values available through this class.	GlobalizationBase
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.	GlobalizationValidatorBase
valid	Dispatched when validation succeeds.	GlobalizationValidatorBase

Stili

Gli stili sono di tipo comune oppure associati a un tema specifico. Se lo stile è comune, può essere utilizzato con qualunque tema. Se è associato a un tema specifico, può essere utilizzato solo se la vostra applicazione ne fa uso.

Stili comuni

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	Stile		Descrizione	Definito da
		locale	Tipo: String Ereditarietà CSS: Sì Versione linguaggio: ActionScript 3.0 Versione prodotto: Flex 4.5 Versioni runtime: Flash10.1, AIR 2.5 The locale identifier that specifies the language, region, script and optionally other related tags and keys.	GlobalizationBase

Descrizione delle proprietà

negativeNumberFormat

proprietà

negativeNumberFormat:uint

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 4.5

Versioni runtime:

Flash Player 10.1, AIR 2.5

A numeric value that indicates a validating pattern for negative numbers. This pattern defines the location of the negative symbol or parentheses in relation to the numeric portion of the number to be validated.

The following table summarizes the possible formats for negative numbers. When a negative number is validated, the minus sign represents the value of the negativeSymbol property and the 'n' character represents numeric value.

Negative number format type	Format
0	(n)
1	-n
2	- n
3	n-
4	n -

The default value is dependent on the actual locale and operating system.

Questa proprietà può essere utilizzata come origine per l’associazione di dati. Quando questa proprietà viene modificata, invia l’evento change .

Implementazione
public function get negativeNumberFormat():uint
public function set negativeNumberFormat(value:uint):void

Genera

ArgumentError — if the assigned value is not a number between 0 and 4.

Elementi API correlati

negativeSymbol
format()

negativeNumberFormatError

proprietà

negativeNumberFormatError:String

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 4.5

Versioni runtime:

Flash Player 10.1, AIR 2.5

Error message when the input number's negative number format is not following the pattern specified by the negativeNumberFormat property.

Il valore predefinito è "The negative format of the input number is incorrect.".

Questa proprietà può essere utilizzata come origine per l’associazione di dati. Quando questa proprietà viene modificata, invia l’evento change .

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

Descrizione della funzione di costruzione

()

Funzione di costruzione

public function NumberValidator()

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 4.5

Versioni runtime:

Flash Player 10.1, AIR 2.5

Constructs a new NumberValidator object to validate numbers according to the conventions of a given locale.

The locale for this class is supplied by the locale style. The locale style can be set in several ways:

Inheriting the style from a UIComponent by calling the UIComponent's addStyleClient method.
By using the class in an MXML declaration and inheriting the locale from the document that contains the declaration.
```
      <fx:Declarations>
             <s:NumberValidator id="nv" />
      </fx:Declarations>
      
```

By using an MXML declaration and specifying the locale value in the list of assignments.

      <fx:Declarations>
          <s:NumberValidator id="nv_French_France" locale="fr_FR" />
      </fx:Declarations>

Calling the setStyle method. For example: nv.setStyle("locale", "fr-FR")

If the locale style is not set by one of the above techniques, the instance of this class will be added as a StyleClient to the topLevelApplication and will therefore inherit the locale style from the topLevelApplication object when the locale dependent property getter or locale dependent method is called.

Descrizione dei metodi

validateNumber

()

metodo

public function validateNumber(value:Object, baseField:String):Array

Versione linguaggio:

ActionScript 3.0

Versione prodotto:

Flex 4.5

Versioni runtime:

Flash Player 10.1, AIR 2.5

Convenience method for calling a validator from within a custom validation function. Each of the standard Flex validators has a similar convenience method. Caller must check the ValidationResult objects in the returned array for validation status.

Parametri

	`value:Object` — A number string to validate.

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

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

NumberValidatorExample1.mxml

<?xml version="1.0" encoding="utf-8"?>
<!-- Sample program for spark.formatters.NumberValidator -->
<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:Declarations>
        <s:NumberValidator id="numberValidator" source='{inputNumber}' 
                             property="text" trigger='{validateBtn}'
                             triggerEvent="click" />
        <s:NumberFormatter id="numberFormatter" useGrouping="true"/>
    </fx:Declarations>
    
    <fx:Script>
        <![CDATA[
            [Bindable]
            private var number:Number = 123456789.12;
        ]]>
    </fx:Script>
    
    <mx:Form>
        <mx:FormItem label="Input Locale ID Name">
            <mx:HBox>
                <s:TextInput id="inputLocaleIDName" text="en-US"/>
                <!-- Upon button click, sets the locale style on the document
                UI component. The formatter will inherit this style. -->
                <s:Button click="setStyle('locale', inputLocaleIDName.text);"
                          label="Apply"/>
            </mx:HBox>
            <mx:Text text="Example: 'en-US', 'fr-FR', 'ja-JP', 'ar-SA'"/>
        </mx:FormItem>
        
        <mx:FormItem label="Allow Negative">
            <mx:CheckBox id="alowNegative" selected="true"
                         change="numberValidator.allowNegative = alowNegative.selected"/>
        </mx:FormItem>
        
        <mx:FormItem label="Fractional Digits">
            <mx:TextInput id="fractionalDigits" text='{numberValidator.fractionalDigits}' 
                          change="numberFormatter.fractionalDigits = 
                          numberValidator.fractionalDigits = Number(fractionalDigits.text)"/>
        </mx:FormItem>
        
        <mx:FormItem label="Actual Locale ID Name">
            <mx:Text text="{numberValidator.actualLocaleIDName}"/>
        </mx:FormItem>
        
        <mx:FormItem label="Input number" >
            <mx:HBox>
                <mx:TextInput id="inputNumber" />
                <mx:Button id="validateBtn" label="Validate" />
            </mx:HBox>
        </mx:FormItem>
        
        <mx:FormItem label="Example number">
            <mx:Text text="{numberFormatter.format(123456789.12)}"/>
        </mx:FormItem>
    </mx:Form>
</s:Application>

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NumberValidator - AS3 Flex

Classi x

negativeNumberFormat

negativeNumberFormatError

NumberValidator

validateNumber