| Package | mx.validators |
| Class | public class NumberValidator |
| Inheritance | NumberValidator  Validator flash.events.EventDispatcher |
| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
 | Starting with Flex 4.5, Apache recommends that you use the spark.validators.NumberValidator class as an alternative to this class. |
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
Hide MXML SyntaxThe <mx:NumberValidator> tag
inherits all of the tag attributes of its superclass,
and adds the following tag attributes:
Show MXML Syntax
<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=","
/>
| Property | Defined By | ||
|---|---|---|---|
| allowNegative : Object
Specifies whether negative numbers are permitted. | NumberValidator | ||
| 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
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 | |
| Method | Defined By | ||
|---|---|---|---|
Constructor. | NumberValidator | ||
| initialized(document:Object, id:String):void
Called automatically by the MXML compiler when the Validator
is created using an MXML tag. | Validator | |
| validate(value:Object = null, suppressEvents:Boolean = false):ValidationResultEvent
Performs validation and optionally notifies
the listeners of the result. | Validator | |
| validateAll(validators:Array):Array [static]
Invokes all the validators in the validators Array. | Validator | |
validateNumber(validator:NumberValidator, value:Object, baseField:String):Array [static]
Convenience method for calling a validator
from within a custom validation function. | NumberValidator | ||
| Method | Defined By | ||
|---|---|---|---|
| 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 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 | |
| allowNegative | property |
allowNegative:Object| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
Specifies whether negative numbers are permitted.
Valid values are true or false.
The default value is true.
public function get allowNegative():Object public function set allowNegative(value:Object):void| decimalPointCountError | property |
decimalPointCountError:String| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
Error message when the decimal separator character occurs more than once.
The default value is "The decimal separator can occur only once.".
public function get decimalPointCountError():String public function set decimalPointCountError(value:String):void| decimalSeparator | property |
decimalSeparator:String| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | 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.
The default value is ".".
public function get decimalSeparator():String public function set decimalSeparator(value:String):void| domain | property |
domain:String| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | 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.
The default value is "real".
public function get domain():String public function set domain(value:String):void| exceedsMaxError | property |
exceedsMaxError:String| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
Error message when the value exceeds the maxValue property.
The default value is "The number entered is too large.".
public function get exceedsMaxError():String public function set exceedsMaxError(value:String):void| integerError | property |
integerError:String| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
Error message when the number must be an integer, as defined
by the domain property.
The default value is "The number must be an integer.".
public function get integerError():String public function set integerError(value:String):void| invalidCharError | property |
invalidCharError:String| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
Error message when the value contains invalid characters.
The default value is The input contains invalid characters.".
public function get invalidCharError():String public function set invalidCharError(value:String):void| invalidFormatCharsError | property |
invalidFormatCharsError:String| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | 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.
The default value is "One of the formatting parameters is invalid.".
public function get invalidFormatCharsError():String public function set invalidFormatCharsError(value:String):void| lowerThanMinError | property |
lowerThanMinError:String| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
Error message when the value is less than minValue.
The default value is "The amount entered is too small.".
public function get lowerThanMinError():String public function set lowerThanMinError(value:String):void| maxValue | property |
maxValue:Object| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
Maximum value for a valid number. A value of NaN means there is no maximum.
The default value is NaN.
public function get maxValue():Object public function set maxValue(value:Object):void| minValue | property |
minValue:Object| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
Minimum value for a valid number. A value of NaN means there is no minimum.
The default value is NaN.
public function get minValue():Object public function set minValue(value:Object):void| negativeError | property |
negativeError:String| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
Error message when the value is negative and the
allowNegative property is false.
The default value is "The amount may not be negative.".
public function get negativeError():String public function set negativeError(value:String):void| precision | property |
precision:Object| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | 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.
The default value is -1.
public function get precision():Object public function set precision(value:Object):void| precisionError | property |
precisionError:String| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
Error message when the value has a precision that exceeds the value defined by the precision property.
The default value is "The amount entered has too many digits beyond the decimal point.".
public function get precisionError():String public function set precisionError(value:String):void| separationError | property |
separationError:String| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
Error message when the thousands separator is in the wrong location.
The default value is "The thousands separator must be followed by three digits.".
public function get separationError():String public function set separationError(value:String):void| thousandsSeparator | property |
thousandsSeparator:String| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | 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.
The default value is ",".
public function get thousandsSeparator():String public function set thousandsSeparator(value:String):void| NumberValidator | () | Constructor |
public function NumberValidator()| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | Flash Player 9, AIR 1.1 |
Constructor.
| doValidation | () | method |
override protected function doValidation(value:Object):Array| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | 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.
Parameters
value:Object — Object to validate.
|
Array — An Array of ValidationResult objects, with one ValidationResult
object for each field examined by the validator.
|
| validateNumber | () | method |
public static function validateNumber(validator:NumberValidator, value:Object, baseField:String):Array| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 3 |
| Runtime Versions : | 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.
Parameters
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.
|
See also
<?xml version="1.0" encoding="utf-8"?>
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this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
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http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<!-- 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>