NumberValidator

Paket	mx.validators
Klass	public class NumberValidator
Arv	NumberValidator Validator EventDispatcher Object

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Med början från Flex 4.5, rekommenderar Adobe att du använder klassen spark.validators.NumberValidator som ett alternativ till den här klassen.

The NumberValidator class ensures that a String represents a valid number. It can ensure that the input falls within a given range (specified by minValue and maxValue), is an integer (specified by domain), is non-negative (specified by allowNegative), and does not exceed the specified precision. The validator correctly validates formatted numbers (e.g., "12,345.67") and you can customize the thousandsSeparator and decimalSeparator properties for internationalization.

MXML-syntax expanded

Dölj MXML-syntax

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

  <mx:NumberValidator 
    allowNegative="true|false" 
    decimalPointCountError="The decimal separator can only occur once." 
    decimalSeparator="." 
    domain="real|int" 
    exceedsMaxError="The number entered is too large." 
    integerError="The number must be an integer." 
    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="-1" 
    precisionError="The amount entered has too many digits beyond the decimal point." 
    separationError="The thousands separator must be followed by three digits." 
    thousandsSeparator="," 
  />

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Publika egenskaper

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	Egenskap		Definieras med
		allowNegative : Object Specifies whether negative numbers are permitted.	NumberValidator
		constructor : Object En referens till klassobjektet eller konstruktorfunktionen för en given objektinstans.	Object
		decimalPointCountError : String Error message when the decimal separator character occurs more than once.	NumberValidator
		decimalSeparator : String The character used to separate the whole from the fractional part of the number.	NumberValidator
		domain : String Type of number to be validated.	NumberValidator
		enabled : Boolean Setting this value to false will stop the validator from performing validation.	Validator
		exceedsMaxError : String Error message when the value exceeds the maxValue property.	NumberValidator
		integerError : String Error message when the number must be an integer, as defined by the domain property.	NumberValidator
		invalidCharError : String Error message when the value contains invalid characters.	NumberValidator
		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.	NumberValidator
		listener : Object Specifies the validation listener.	Validator
		lowerThanMinError : String Error message when the value is less than minValue.	NumberValidator
		maxValue : Object Maximum value for a valid number.	NumberValidator
		minValue : Object Minimum value for a valid number.	NumberValidator
		negativeError : String Error message when the value is negative and the allowNegative property is false.	NumberValidator
		precision : Object The maximum number of digits allowed to follow the decimal point.	NumberValidator
		precisionError : String Error message when the value has a precision that exceeds the value defined by the precision property.	NumberValidator
		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 in the wrong location.	NumberValidator
		source : Object Specifies the object containing the property to validate.	Validator
		thousandsSeparator : String The character used to separate thousands in the whole part of the number.	NumberValidator
		trigger : IEventDispatcher Specifies the component generating the event that triggers the validator.	Validator
		triggerEvent : String Specifies the event that triggers the validation.	Validator

Skyddade egenskaper

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	Egenskap		Definieras med
		actualListeners : Array [skrivskyddad] Contains an Array of listener objects, if any, or the source object.	Validator
		actualTrigger : IEventDispatcher [skrivskyddad] Contains the trigger object, if any, or the source object.	Validator
		resourceManager : IResourceManager [skrivskyddad] 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

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	Metod		Definieras med
		NumberValidator() Constructor.	NumberValidator
		addEventListener(type:String, listener:Function, useCapture:Boolean = false, priority:int = 0, useWeakReference:Boolean = false):void Registrerar ett händelseavlyssnarobjekt för ett EventDispatcher-objekt så att avlyssnaren får meddelanden om händelser.	EventDispatcher
		dispatchEvent(event:Event):Boolean Skickar en händelse till händelseflödet.	EventDispatcher
		hasEventListener(type:String):Boolean Kontrollerar om EventDispatcher-objektet har några avlyssnare registrerade för en viss typ av händelse.	EventDispatcher
		hasOwnProperty(name:String):Boolean Anger om det finns en egenskap angiven för ett objekt.	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 Anger om en instans av klassen Object finns i prototypkedjan för objektet som anges som parameter.	Object
		propertyIsEnumerable(name:String):Boolean Anger om den angivna egenskapen finns och är uppräkningsbar.	Object
		removeEventListener(type:String, listener:Function, useCapture:Boolean = false):void Tar bort en avlyssnare från EventDispatcher-objektet.	EventDispatcher
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Anger tillgänglighet för en dynamisk egenskap för slingåtgärder.	Object
		toLocaleString():String Returnerar det här objektets strängrepresentation, formaterad i enlighet med språkspecifika konventioner.	Object
		toString():String Returnerar det angivna objektets strängbeteckning.	Object
		validate(value:Object = null, suppressEvents:Boolean = false):ValidationResultEvent Performs validation and optionally notifies the listeners of the result.	Validator
		validateAll(validators:Array):Array [statisk] Invokes all the validators in the validators Array.	Validator
		validateNumber(validator:NumberValidator, value:Object, baseField:String):Array [statisk] Convenience method for calling a validator from within a custom validation function.	NumberValidator
		valueOf():Object Returnerar det angivna objektets primitiva värde.	Object
		willTrigger(type:String):Boolean Kontrollerar om en händelseavlyssnare är registrerad för det här EventDispatcher-objektet eller något av dess överordnade objekt för den angivna händelsetypen.	EventDispatcher

Skyddade metoder

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	Metod		Definieras med
		addListenerHandler():void Sets up all of the listeners for the valid and invalid events dispatched from the validator.	Validator
		doValidation(value:Object):Array [åsidosätt] Override of the base class doValidation() method to validate a number.	NumberValidator
		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

Händelser

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	Sammanfattning	Definieras med
activate	[utsändningshändelse] Skickas när Flash Player eller AIR får operativsystemfokus och blir aktivt.	EventDispatcher
deactivate	[utsändningshändelse] Skickas när Flash Player eller AIR förlorar operativsystemfokus och blir inaktivt.	EventDispatcher
invalid	Dispatched when validation fails.	Validator
valid	Dispatched when validation succeeds.	Validator

Skyddade konstanter

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	Konstant		Definieras med

Egenskapsdetaljer

allowNegative

egenskap

allowNegative:Object

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Specifies whether negative numbers are permitted. Valid values are true or false.

Standardvärdet är true.

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

decimalPointCountError

egenskap

decimalPointCountError:String

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

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

Standardvärdet är "The decimal separator can occur only once.".

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

decimalSeparator

egenskap

decimalSeparator:String

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

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 thousandsSeparator.

Standardvärdet är ".".

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

domain

egenskap

domain:String

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Type of number to be validated. Permitted values are "real" and "int".

In ActionScript, you can use the following constants to set this property: NumberValidatorDomainType.REAL or NumberValidatorDomainType.INT.

Standardvärdet är "real".

Implementering
public function get domain():String
public function set domain(value:String):void

exceedsMaxError

egenskap

exceedsMaxError:String

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Error message when the value exceeds the maxValue property.

Standardvärdet är "The number entered is too large.".

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

integerError

egenskap

integerError:String

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Error message when the number must be an integer, as defined by the domain property.

Standardvärdet är "The number must be an integer.".

Implementering
public function get integerError():String
public function set integerError(value:String):void

invalidCharError

egenskap

invalidCharError:String

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Error message when the value contains invalid characters.

Standardvärdet är The input contains invalid characters.".

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

invalidFormatCharsError

egenskap

invalidFormatCharsError:String

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

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.

Standardvärdet är "One of the formatting parameters is invalid.".

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

lowerThanMinError

egenskap

lowerThanMinError:String

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Error message when the value is less than minValue.

Standardvärdet är "The amount entered is too small.".

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

maxValue

egenskap

maxValue:Object

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Maximum value for a valid number. A value of NaN means there is no maximum.

Standardvärdet är NaN.

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

minValue

egenskap

minValue:Object

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Minimum value for a valid number. A value of NaN means there is no minimum.

Standardvärdet är NaN.

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

negativeError

egenskap

negativeError:String

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

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

Standardvärdet är "The amount may not be negative.".

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

precision

egenskap

precision:Object

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

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

Standardvärdet är -1.

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

precisionError

egenskap

precisionError:String

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

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

Standardvärdet är "The amount entered has too many digits beyond the decimal point.".

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

separationError

egenskap

separationError:String

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Error message when the thousands separator is in the wrong location.

Standardvärdet är "The thousands separator must be followed by three digits.".

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

thousandsSeparator

egenskap

thousandsSeparator:String

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

The character used to separate thousands in the whole part of the number. Cannot be a digit and must be distinct from the decimalSeparator.

Standardvärdet är ",".

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

Konstruktordetaljer

()

Konstruktor

public function NumberValidator()

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

Constructor.

Metoddetaljer

doValidation

()

metod

override protected function doValidation(value:Object):Array

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

Flash Player 9, AIR 1.1

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

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.

Parametrar

value:Object — Object to validate.

Returnerar

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

validateNumber

()

metod

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

Språkversion:

ActionScript 3.0

Produktversion:

Flex 3

Körningsmiljöversioner:

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.

Parametrar

	`validator:NumberValidator` — The NumberValidator 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.number, the `baseField` value is "number".

Returnerar

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

Relaterade API-element

mx.validators.ValidationResult

Exempel Så här använder du exemplet

NumberValidatorExample.mxml

<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate the 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:Script>
        import mx.controls.Alert;
    </fx:Script>

    <fx:Declarations>
        <mx:NumberValidator source="{age}" property="text" integerError="Enter Integer value"
                minValue="18" maxValue="50" domain="int" 
                trigger="{myButton}" triggerEvent="click"
                valid="Alert.show('Validation Succeeded!');"
                invalid="Alert.show('Validation failed!');"/>
    </fx:Declarations>

    <s:Panel title="NumberValidator Example"
            width="75%" height="75%"
            horizontalCenter="0" verticalCenter="0">
        <mx:Form left="10" right="10" top="10" bottom="10">
            <mx:FormItem label="Enter an age between 18 and 50:">
                <s:TextInput id="age" width="100%"/>
            </mx:FormItem>
            <mx:FormItem >
                <s:Button id="myButton" label="Validate" />
            </mx:FormItem>
        </mx:Form>
    </s:Panel>

</s:Application>

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NumberValidator - AS3 Flex

Paketx

Språkelement

Bilagor

Paket mx.validators

allowNegative

decimalPointCountError

decimalSeparator

domain

exceedsMaxError

integerError

invalidCharError

invalidFormatCharsError

lowerThanMinError

maxValue

minValue

negativeError

precision

precisionError

separationError

thousandsSeparator