Packagespark.accessibility
Classpublic class NumericStepperAccImpl
InheritanceNumericStepperAccImpl Inheritance SpinnerAccImpl Inheritance AccImpl Inheritance flash.accessibility.AccessibilityImplementation

Language Version : ActionScript 3.0
Product Version : Flex 4
Runtime Versions : Flash Player 10, AIR 1.5

NumericStepperAccImpl is the accessibility implementation class for spark.components.NumericStepper.

When a Spark NumericStepper is created, its accessibilityImplementation property is set to an instance of this class. The Flash Player then uses this class to allow MSAA clients such as screen readers to see and manipulate the NumericStepper. See the mx.accessibility.AccImpl and flash.accessibility.AccessibilityImplementation classes for background information about accessibility implementation classes and MSAA.

Children

A NumericStepper has two MSAA children, which are its increment and decrement buttons.

Role

The MSAA Role of a NumericStepper is ROLE_SYSTEM_TEXT.

The Role of each child button is ROLE_SYSTEM_PUSHBUTTON.

Name

The MSAA Name of a NumericStepper is, by default, an empty string. When wrapped in a FormItem element, the Name is the FormItem's label. To override this behavior, set the NumericStepper's accessibilityName property.

The Name of each child button comes from a locale-dependent resource. For the en_US locale, the names are "More" and "Less".

When the Name of the NumericStepper or one of its child button changes a NumericStepper dispatches the MSAA event EVENT_OBJECT_NAMECHANGE with the proper childID for the button or 0 for itself.

Description

The MSAA Description of a NumericStepper is, by default, an empty string, but you can set the NumericStepper's accessibilityDescription property.

The Description of each child button is the empty string.

State

The MSAA State of a NumericStepper is a combination of:

When the State of the NumericStepper or one of its child buttons changes, a NumericStepper dispatches the MSAA event EVENT_OBJECT_STATECHANGE with the proper childID for the button or 0 for itself.

Value

The MSAA Value of a NumericStepper is the value currently held by the NumericStepper.

The child buttons do not have MSAA values.

When the Value of the NumericStepper changes, the NumericStepper dispatches the MSAA event EVENT_OBJECT_VALUECHANGE.

Location

The MSAA Location of a NumericStepper, or one of its child buttons, is its bounding rectangle.

Default Action

A NumericStepper does not have an MSAA DefaultAction.

The DefaultAction of each child button is "Press".

Performing the default action of one of the child buttons will increment or decrement the value.

Focus

A NumericStepper accepts focus. When it does so, it dispatches the MSAA event EVENT_OBJECT_FOCUS.

Selection

A NumericStepper does not support selection in the MSAA sense.



Protected Properties
 PropertyDefined By
 InheritedeventsToHandle : Array
[read-only] All subclasses must override this function by returning an array of strings of the events to listen for.
AccImpl
 Inheritedmaster : UIComponent
A reference to the UIComponent instance that this AccImpl instance is making accessible.
AccImpl
 Inheritedrole : uint
Accessibility role of the component being made accessible.
AccImpl
Public Methods
 MethodDefined By
  
Constructor.
NumericStepperAccImpl
  
[static] Enables accessibility in the Spinner class.
NumericStepperAccImpl
 Inherited
getFormName(component:UIComponent):String
[static] Method for supporting Form Accessibility.
AccImpl
 Inherited
isAncestorDisabled(component:UIComponent):Boolean
[static] Returns true if an ancestor of the component has enabled set to false.
AccImpl
Protected Methods
 MethodDefined By
 Inherited
eventHandler(event:Event):void
Generic event handler.
AccImpl
 Inherited
getName(childID:uint):String
Returns the name of the accessible component.
AccImpl
 Inherited
getState(childID:uint):uint
Utility method to determine state of the accessible component.
AccImpl
Constructor Detail
NumericStepperAccImpl()Constructor
public function NumericStepperAccImpl(master:UIComponent)

Language Version : ActionScript 3.0
Product Version : Flex 4
Runtime Versions : Flash Player 10, AIR 1.5

Constructor.

Parameters
master:UIComponent — The UIComponent instance that this AccImpl instance is making accessible.
Method Detail
enableAccessibility()method
public static function enableAccessibility():void

Language Version : ActionScript 3.0
Product Version : Flex 4
Runtime Versions : Flash Player 10, AIR 1.5

Enables accessibility in the Spinner class.

This method is called by application startup code that is autogenerated by the MXML compiler. Afterwards, when instances of Spinner are initialized, their accessibilityImplementation property will be set to an instance of this class.