mx.formatters.CurrencyFormatter - Adobe® Flex® 4 Language Reference (Flex 4)

Package	mx.formatters
Class	public class CurrencyFormatter
Inheritance	CurrencyFormatter Formatter Object

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

The CurrencyFormatter class formats a valid number as a currency value. It adjusts the decimal rounding and precision, the thousands separator, and the negative sign; it also adds a currency symbol. You place the currency symbol on either the left or the right side of the value with the alignSymbol property. The currency symbol can contain multiple characters, including blank spaces.

If an error occurs, an empty String is returned and a String that describes the error is saved to the error property. The error property can have one of the following values:

"Invalid value" means an invalid numeric value is passed to the format() method. The value should be a valid number in the form of a Number or a String.
"Invalid format" means one of the parameters contains an unusable setting.

MXML Syntax expanded

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

  <mx:CurrencyFormatter
    alignSymbol="left|right" 
    currencySymbol="$"
    decimalSeparatorFrom="."
    decimalSeparatorTo="."
    precision="-1"
    rounding="none|up|down|nearest"
    thousandsSeparatorFrom=","
    thousandsSeparatorTo=","
    useNegativeSign="true|false"
    useThousandsSeparator="true|false"
 />

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Public Properties

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	Property		Defined By
		alignSymbol : String Aligns currency symbol to the left side or the right side of the formatted number.	CurrencyFormatter
		constructor : Object A reference to the class object or constructor function for a given object instance.	Object
		currencySymbol : String Character to use as a currency symbol for a formatted number.	CurrencyFormatter
		decimalSeparatorFrom : String Decimal separator character to use when parsing an input string.	CurrencyFormatter
		decimalSeparatorTo : String Decimal separator character to use when outputting formatted decimal numbers.	CurrencyFormatter
		defaultInvalidFormatError : String [static] Error message for an invalid format string specified to the formatter.	Formatter
		defaultInvalidValueError : String [static] Error messages for an invalid value specified to the formatter.	Formatter
		error : String Description saved by the formatter when an error occurs.	Formatter
		precision : Object Number of decimal places to include in the output String.	CurrencyFormatter
		prototype : Object [static] A reference to the prototype object of a class or function object.	Object
		rounding : String How to round the number.	CurrencyFormatter
		thousandsSeparatorFrom : String Character to use as the thousands separator in the input String.	CurrencyFormatter
		thousandsSeparatorTo : String Character to use as the thousands separator in the output string.	CurrencyFormatter
		useNegativeSign : Object If true, format a negative number by preceding it with a minus "-" sign.	CurrencyFormatter
		useThousandsSeparator : Object If true, split the number into thousands increments by using a separator character.	CurrencyFormatter

Protected Properties

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	Property		Defined By
		resourceManager : IResourceManager [read-only] A reference to the object which manages all of the application's localized resources.	Formatter

Public Methods

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	Method		Defined By
		CurrencyFormatter() Constructor.	CurrencyFormatter
		format(value:Object):String [override] Formats value as currency.	CurrencyFormatter
		hasOwnProperty(name:String):Boolean Indicates whether an object has a specified property defined.	Object
		isPrototypeOf(theClass:Object):Boolean Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.	Object
		propertyIsEnumerable(name:String):Boolean Indicates whether the specified property exists and is enumerable.	Object
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Sets the availability of a dynamic property for loop operations.	Object
		toLocaleString():String Returns the string representation of this object, formatted according to locale-specific conventions.	Object
		toString():String Returns the string representation of the specified object.	Object
		valueOf():Object Returns the primitive value of the specified object.	Object

Protected Methods

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	Method		Defined By
		resourcesChanged():void This method is called when a Formatter is constructed, and again whenever the ResourceManager dispatches a "change" Event to indicate that the localized resources have changed in some way.	Formatter

Property Detail

alignSymbol

property

alignSymbol:String

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Aligns currency symbol to the left side or the right side of the formatted number. Permitted values are "left" and "right".

The default value is "left".

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

currencySymbol

property

currencySymbol:String

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Character to use as a currency symbol for a formatted number. You can use one or more characters to represent the currency symbol; for example, "$" or "YEN". You can also use empty spaces to add space between the currency character and the formatted number. When the number is a negative value, the currency symbol appears between the number and the minus sign or parentheses.

The default value is "$".

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

decimalSeparatorFrom

property

decimalSeparatorFrom:String

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Decimal separator character to use when parsing an input string.

The default value is ".".

Implementation
public function get decimalSeparatorFrom():String
public function set decimalSeparatorFrom(value:String):void

decimalSeparatorTo

property

decimalSeparatorTo:String

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Decimal separator character to use when outputting formatted decimal numbers.

The default value is ".".

Implementation
public function get decimalSeparatorTo():String
public function set decimalSeparatorTo(value:String):void

precision

property

precision:Object

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Number of decimal places to include in the output String. You can disable precision by setting it to -1. A value of -1 means do not change the precision. For example, if the input value is 1.453 and rounding is set to NumberBaseRoundType.NONE, return 1.453. If precision is -1 and you set some form of rounding, return a value based on that rounding type.

The default value is -1.

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

rounding

property

rounding:String

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

How to round the number. In ActionScript, the value can be NumberBaseRoundType.NONE, NumberBaseRoundType.UP, NumberBaseRoundType.DOWN, or NumberBaseRoundType.NEAREST. In MXML, the value can be "none", "up", "down", or "nearest".

The default value is NumberBaseRoundType.NONE.

Implementation
public function get rounding():String
public function set rounding(value:String):void

thousandsSeparatorFrom

property

thousandsSeparatorFrom:String

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Character to use as the thousands separator in the input String.

The default value is ",".

Implementation
public function get thousandsSeparatorFrom():String
public function set thousandsSeparatorFrom(value:String):void

thousandsSeparatorTo

property

thousandsSeparatorTo:String

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Character to use as the thousands separator in the output string.

The default value is ",".

Implementation
public function get thousandsSeparatorTo():String
public function set thousandsSeparatorTo(value:String):void

useNegativeSign

property

useNegativeSign:Object

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

If true, format a negative number by preceding it with a minus "-" sign. If false, format the number surrounded by parentheses, for example (400).

The default value is true.

Implementation
public function get useNegativeSign():Object
public function set useNegativeSign(value:Object):void

useThousandsSeparator

property

useThousandsSeparator:Object

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

If true, split the number into thousands increments by using a separator character.

The default value is true.

Implementation
public function get useThousandsSeparator():Object
public function set useThousandsSeparator(value:Object):void

Constructor Detail

CurrencyFormatter

()

Constructor

public function CurrencyFormatter()

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Constructor.

Method Detail

format

()

method

override public function format(value:Object):String

Language Version:

ActionScript 3.0

Product Version:

Flex 3

Runtime Versions:

Flash Player 9, AIR 1.1

Formats value as currency. If value cannot be formatted, return an empty String and write a description of the error to the error property.

Parameters

value:Object — Value to format.

Returns

String — Formatted string. Empty if an error occurs.

Examples How to use this example

CurrencyFormatterExample.mxml

<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate the CurrencyFormatter. -->
<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>
        <![CDATA[
            import mx.events.ValidationResultEvent;

            private var vResult:ValidationResultEvent;

            // Event handler to validate and format input.
            private function Format():void {
                vResult = numVal.validate();

                if (vResult.type==ValidationResultEvent.VALID) {
                    var temp:Number = Number(priceUS.text); 
                    formattedUSPrice.text = usdFormatter.format(temp);
                } else {
                    formattedUSPrice.text = "";
                }
            }
        ]]>
    </fx:Script>

    <fx:Declarations>
        <mx:CurrencyFormatter id="usdFormatter" precision="2" 
                currencySymbol="$" decimalSeparatorFrom="."
                decimalSeparatorTo="." useNegativeSign="true" 
                useThousandsSeparator="true" alignSymbol="left"/>

        <mx:NumberValidator id="numVal" source="{priceUS}" property="text" 
                allowNegative="true" domain="real"/>
    </fx:Declarations>

    <s:Panel title="CurrencyFormatter Example"
            width="75%" height="75%"
            horizontalCenter="0" verticalCenter="0">
        <mx:Form left="10" right="10" top="10" bottom="10">
            <mx:FormItem label="Enter U.S. dollar amount:">
                <s:TextInput id="priceUS" text="" width="50%"/>
            </mx:FormItem>
            <mx:FormItem label="Formatted amount: ">
                <s:TextInput id="formattedUSPrice" text="" width="50%" editable="false"/>
            </mx:FormItem>
            <mx:FormItem>
                <s:Button label="Validate and Format" click="Format();"/>
            </mx:FormItem>
        </mx:Form>
    </s:Panel>

</s:Application>