| 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
Visa MXML-syntax
Dölj MXML-syntaxThe <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=","
/>
| 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 | |
| Metod | Definieras med | ||
|---|---|---|---|
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 | |
|
Skickar en händelse till händelseflödet. | EventDispatcher | |
|
Kontrollerar om EventDispatcher-objektet har några avlyssnare registrerade för en viss typ av händelse. | EventDispatcher | |
|
Anger om det finns en egenskap angiven för ett objekt. | Object | |
|
Called automatically by the MXML compiler when the Validator
is created using an MXML tag. | Validator | |
|
Anger om en instans av klassen Object finns i prototypkedjan för objektet som anges som parameter. | Object | |
|
Anger om den angivna egenskapen finns och är uppräkningsbar. | Object | |
|
Tar bort en avlyssnare från EventDispatcher-objektet. | EventDispatcher | |
|
Anger tillgänglighet för en dynamisk egenskap för slingåtgärder. | Object | |
|
Returnerar det här objektets strängrepresentation, formaterad i enlighet med språkspecifika konventioner. | Object | |
|
Returnerar det angivna objektets strängbeteckning. | Object | |
|
Performs validation and optionally notifies
the listeners of the result. | Validator | |
| [statisk]
Invokes all the validators in the validators Array. | Validator | |
[statisk]
Convenience method for calling a validator
from within a custom validation function. | NumberValidator | ||
|
Returnerar det angivna objektets primitiva värde. | Object | |
|
Kontrollerar om en händelseavlyssnare är registrerad för det här EventDispatcher-objektet eller något av dess överordnade objekt för den angivna händelsetypen. | EventDispatcher | |
| Metod | Definieras med | ||
|---|---|---|---|
|
Sets up all of the listeners for the
valid and invalid
events dispatched from the validator. | Validator | |
[åsidosätt]
Override of the base class doValidation() method
to validate a number. | NumberValidator | ||
|
Returns the Object to validate. | Validator | |
|
Returns a ValidationResultEvent from the Array of error results. | Validator | |
|
Returns true if value is not null. | Validator | |
|
Disconnects all of the listeners for the
valid and invalid
events dispatched from the validator. | Validator | |
|
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 | |
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):voiddecimalPointCountError | 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):voiddecimalSeparator | 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):voiddomain | 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):voidexceedsMaxError | 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):voidintegerError | 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):voidinvalidCharError | 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):voidinvalidFormatCharsError | 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):voidlowerThanMinError | 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):voidmaxValue | 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):voidminValue | 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):voidnegativeError | 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):voidprecision | 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):voidprecisionError | 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):voidseparationError | 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):voidthousandsSeparator | 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):voidNumberValidator | () | Konstruktor |
public function NumberValidator()| Språkversion: | ActionScript 3.0 |
| Produktversion: | Flex 3 |
| Körningsmiljöversioner: | Flash Player 9, AIR 1.1 |
Constructor.
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.
|
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".
|
Array — An Array of ValidationResult objects, with one ValidationResult
object for each field examined by the validator.
|
Relaterade API-element
<?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>
Tue Jun 12 2018, 01:40 PM Z