ActionScript® 3.0 Reference for the Adobe® Flash® Platform
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fl.accessibility 

ButtonAccImpl  - AS3 Flash

Packagefl.accessibility
Classpublic class ButtonAccImpl
InheritanceButtonAccImpl Inheritance LabelButtonAccImpl Inheritance AccImpl Inheritance AccessibilityImplementation Inheritance Object

Language Version: ActionScript 3.0
Product Version: Flash CS3
Runtime Versions: Flash Player 9.0.28.0, AIR 1.0

The ButtonAccImpl class, also called the Button Accessibility Implementation class, enables communication between a Button component and a screen reader. Screen readers are used to translate screen content into synthesized speech or braille for visually impaired users.

The ButtonAccImpl class supports system roles, object-based events, and states.

A Button reports the role ROLE_SYSTEM_PUSHBUTTON (0x2B) to a screen reader.

A Button reports the following states to a screen reader:

  • STATE_SYSTEM_NORMAL (0x00000000)
  • STATE_SYSTEM_UNAVAILABLE (0x00000001)
  • STATE_SYSTEM_FOCUSED (0x00000004)
  • STATE_SYSTEM_PRESSED (0x00000008)
  • STATE_SYSTEM_FOCUSABLE (0x00100000)

A Button dispatches the following events to a screen reader:

  • EVENT_OBJECT_STATECHANGE (0x800A)
  • EVENT_OBJECT_NAMECHANGE (0x800C)

The user of a screen reader can activate a button component by using the spacebar or the Enter key.

Related API Elements



Public Properties
 PropertyDefined By
 Inheritedconstructor : Object
A reference to the class object or constructor function for a given object instance.
Object
 Inheritederrno : uint
Indicates an error code.
AccessibilityImplementation
 Inheritedstub : Boolean
Used to create a component accessibility stub.
AccessibilityImplementation
Public Methods
 MethodDefined By
 Inherited
An IAccessible method that performs the default action associated with the component that this AccessibilityImplementation represents or of one of its child elements.
AccessibilityImplementation
 Inherited
accLocation(childID:uint):*
MSAA method for returning a DisplayObject or Rectangle specifying the bounding box of a child element in the AccessibilityImplementation.
AccessibilityImplementation
 Inherited
accSelect(operation:uint, childID:uint):void
IAccessible method for altering the selection in the component that this AccessibilityImplementation represents.
AccessibilityImplementation
  
[static] Enables accessibility for a Button component.
ButtonAccImpl
 Inherited
MSAA method for returning the default action of the component that this AccessibilityImplementation represents or of one of its child elements.
AccessibilityImplementation
 Inherited
MSAA method for returning the unsigned integer ID of the child element, if any, that has child focus within the component.
AccessibilityImplementation
 Inherited
MSAA method for returning the name for the component that this AccessibilityImplementation represents or for one of its child elements.
AccessibilityImplementation
 Inherited
MSAA method for returning the system role for the component that this AccessibilityImplementation represents or for one of its child elements.
AccessibilityImplementation
 Inherited
MSAA method for returning an array containing the IDs of all child elements that are selected.
AccessibilityImplementation
 Inherited
IAccessible method for returning the current runtime state of the component that this AccessibilityImplementation represents or of one of its child elements.
AccessibilityImplementation
 Inherited
MSAA method for returning the runtime value of the component that this AccessibilityImplementation represents or of one of its child elements.
AccessibilityImplementation
 Inherited
AccessibilityImplementation
 Inherited
AccessibilityImplementation
 Inherited
Returns an array containing the unsigned integer IDs of all child elements in the AccessibilityImplementation.
AccessibilityImplementation
 Inherited
Indicates whether an object has a specified property defined.
Object
 Inherited
Returns true or false to indicate whether a text object having a bounding box specified by a x, y, width, and height should be considered a label for the component that this AccessibilityImplementation represents.
AccessibilityImplementation
 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
Method Detail

enableAccessibility

()method
public static function enableAccessibility():void

Language Version: ActionScript 3.0
Product Version: Flash CS3
Runtime Versions: Flash Player 9.0.28.0, AIR 1.0

Enables accessibility for a Button component. This method is required for the compiler to activate the accessibility classes for a component.