Packagespark.accessibility
Classpublic class RadioButtonAccImpl
InheritanceRadioButtonAccImpl Inheritance CheckBoxAccImpl Inheritance ButtonBaseAccImpl Inheritance AccImpl Inheritance flash.accessibility.AccessibilityImplementation

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

RadioButtonAccImpl is the accessibility implementation class for spark.components.RadioButton.

When a Spark RadioButton 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 RadioButton. See the mx.accessibility.AccImpl and flash.accessibility.AccessibilityImplementation classes for background information about accessibility implementatio classes and MSAA.

Children

A RadioButton has no MSAA children.

Role

The MSAA Role of a RadioButton is ROLE_SYSTEM_RADIOBUTTON.

Name

The MSAA Name of a RadioButton is, by default, the label that it displays. When wrapped in a FormItem, this label will be combined with the FormItem's label. To override this behavior, set the RadioButton's accessibilityName property.

When the Name changes, a RadioButton dispatches the MSAA event EVENT_OBJECT_NAMECHANGE.

Description

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

State

The MSAA state of a RadioButton is a combination of:

When the State changes, a RadioButton dispatches the MSAA event EVENT_OBJECT_STATECHANGE.

Value

A RadioButton does not have an MSAA Value.

Location

The MSAA Location of a RadioButton is its bounding rectangle.

Default Action

The MSAA DefaultAction of a RadioButton is "Check".

When an MSAA client tells the RadioButton to perform this action, KEY_DOWN and KEY_UP MouseEvents for the SPACE key are generated, to simulate pressing the RadioButton via the keyboard, if the RadioButton is enabled.

Focus

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

Selection

A RadioButton 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.
RadioButtonAccImpl
  
[static] Enables accessibility in the RadioButton class.
RadioButtonAccImpl
 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
RadioButtonAccImpl()Constructor
public function RadioButtonAccImpl(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 RadioButton class.

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