Adobe® Flex® 4 Language Reference
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mx.formatters 
Formatter 
Packagemx.formatters
Classpublic class Formatter
InheritanceFormatter Inheritance Object
Subclasses CurrencyFormatter, DateFormatter, NumberFormatter, PhoneFormatter, ZipCodeFormatter

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

The Formatter class is the base class for all data formatters. Any subclass of Formatter must override the format() method.

MXML SyntaxexpandedHide MXML Syntax

The Formatter class defines the following tag attributes, which all of its subclasses inherit:

  <mx:tagname
    Properties
    error=""
  />
  

View the examples

See also



Public Properties
 PropertyDefined By
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
  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
 Inheritedprototype : Object
[static] A reference to the prototype object of a class or function object.
Object
Protected Properties
 PropertyDefined By
  resourceManager : IResourceManager
[read-only] A reference to the object which manages all of the application's localized resources.
Formatter
Public Methods
 MethodDefined By
  
Constructor.
Formatter
  
Formats a value and returns a String containing the new, formatted, value.
Formatter
 Inherited
Indicates whether an object has a specified property defined.
Object
 Inherited
Indicates whether an instance of the Object class is in the prototype chain of the object specified as the parameter.
Object
 Inherited
Indicates whether the specified property exists and is enumerable.
Object
 Inherited
Sets the availability of a dynamic property for loop operations.
Object
 Inherited
Returns the string representation of this object, formatted according to locale-specific conventions.
Object
 Inherited
Returns the string representation of the specified object.
Object
 Inherited
Returns the primitive value of the specified object.
Object
Protected Methods
 MethodDefined By
  
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

defaultInvalidFormatError

property
defaultInvalidFormatError:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Error message for an invalid format string specified to the formatter.

The default value is "Invalid format".



Implementation
    public static function get defaultInvalidFormatError():String
    public static function set defaultInvalidFormatError(value:String):void

defaultInvalidValueError

property 
defaultInvalidValueError:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Error messages for an invalid value specified to the formatter.

The default value is "Invalid value".



Implementation
    public static function get defaultInvalidValueError():String
    public static function set defaultInvalidValueError(value:String):void

error

property 
public var error:String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Description saved by the formatter when an error occurs. For the possible values of this property, see the description of each formatter.

Subclasses must set this value in the format() method.

resourceManager

property 
resourceManager:IResourceManager  [read-only]

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

A reference to the object which manages all of the application's localized resources. This is a singleton instance which implements the IResourceManager interface.

This property can be used as the source for data binding. When this property is modified, it dispatches the unused event.



Implementation
    protected function get resourceManager():IResourceManager
Constructor Detail

Formatter

()Constructor
public function Formatter()

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Constructor.

Method Detail

format

()method
public function format(value:Object):String

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

Formats a value and returns a String containing the new, formatted, value. All subclasses must override this method to implement the formatter.

Parameters

value:Object — Value to be formatted.

Returns
String — The formatted string.

resourcesChanged

()method 
protected function resourcesChanged():void

Language Version: ActionScript 3.0
Product Version: Flex 3
Runtime Versions: Flash Player 9, AIR 1.1

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.

This event will be dispatched when you set the ResourceManager's localeChain property, when a resource module has finished loading, and when you call the ResourceManager's update() method.

Subclasses should override this method and, after calling super.resourcesChanged(), do whatever is appropriate in response to having new resource values.

SimpleFormatterExample.mxml
<?xml version="1.0" encoding="utf-8"?>
<!-- Simple example to demonstrate the Formatter class. -->
<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[
            // Event handler to format the input.
            private function Format():void {
                // The format() method returns the formatted String,
                // or an empty String if there is an error.
                var formattedVal:String = numberFormatter.format(inputVal.text);

                if (formattedVal.length == 0) {
                    // If there is an error, the Format.error property 
                    // contains the reason.
                    formattedNumber.text = numberFormatter.error;
                } else {
                    formattedNumber.text = formattedVal;
                }
            }
        ]]>
    </fx:Script>

    <fx:Declarations>
        <mx:NumberFormatter id="numberFormatter" />
    </fx:Declarations>

    <s:Panel title="NumberFormatter Example"
            width="75%" height="75%"
            horizontalCenter="0" verticalCenter="0">
        <mx:Form left="10" right="10" top="10" bottom="10">
            <mx:FormItem label="Enter number - a letter is invalid:">
                <s:TextInput id="inputVal" text="" width="75%"/>
            </mx:FormItem>
            <mx:FormItem label="Formatted number: ">
                <s:TextInput id="formattedNumber" editable="false" width="75%"/>
            </mx:FormItem>
            <mx:FormItem>
                <s:Button label="Validate and Format" click="Format();"/>
            </mx:FormItem>
        </mx:Form>
    </s:Panel>

</s:Application>