| Package | spark.accessibility |
| Class | public class RadioButtonAccImpl |
| Inheritance | RadioButtonAccImpl  CheckBoxAccImpl ButtonBaseAccImpl AccImpl flash.accessibility.AccessibilityImplementation |
| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 4 |
| Runtime Versions : | Flash Player 10, AIR 1.5 |
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.
| Method | Defined By | ||
|---|---|---|---|
RadioButtonAccImpl(master:UIComponent)
Constructor. | RadioButtonAccImpl | ||
enableAccessibility():void [static]
Enables accessibility in the RadioButton class. | RadioButtonAccImpl | ||
 | getFormName(component:UIComponent):String [static]
Method for supporting Form Accessibility. | AccImpl | |
| isAncestorDisabled(component:UIComponent):Boolean [static]
Returns true if an ancestor of the component has enabled set to false. | AccImpl | |
| RadioButtonAccImpl | () | Constructor |
Hide Inherited Protected Properties
Show Inherited Protected Propertiespublic function RadioButtonAccImpl(master:UIComponent)| Language Version : | ActionScript 3.0 |
| Product Version : | Flex 4 |
| Runtime Versions : | Flash Player 10, AIR 1.5 |
Constructor.
Parametersmaster:UIComponent — The UIComponent instance that this AccImpl instance
is making accessible.
|
| 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.