Package | spark.accessibility |
Class | public class SpinnerAccImpl |
Inheritance | SpinnerAccImpl AccImpl AccessibilityImplementation Object |
Subclasses | NumericStepperAccImpl |
Language Version: | ActionScript 3.0 |
Product Version: | Flex 4 |
Runtime Versions: | Flash Player 10, AIR 1.5 |
When a Spark Spinner 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 Spinner.
See the mx.accessibility.AccImpl and
flash.accessibility.AccessibilityImplementation classes
for background information about accessibility implementation
classes and MSAA.
Children
A Spinner has 2 MSAA children, which are its increment and decrement buttons.
Role
The MSAA Role of a Spinner is ROLE_SYSTEM_SPINBUTTON.
The Role of each child button is ROLE_SYSTEM_PUSHBUTTON.
Name
The MSAA Name of a Spinner 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 Spinner'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 Spinner or one of its child button changes, a Spinner dispatches the MSAA event EVENT_OBJECT_NAMECHANGE with the proper childID for the button or 0 for itself.
Description
The MSAA Description of a Spinner is, by default, an empty string,
but you can set the Spinner's accessibilityDescription
property.
The Description of each child button is the empty string.
State
The MSAA State of a Spinner is a combination of:
- STATE_SYSTEM_UNAVAILABLE (when enabled is false)
- STATE_SYSTEM_FOCUSABLE (when enabled is true)
- STATE_SYSTEM_FOCUSED (when enabled is true and the Spinner has focus)
When the State of the Spinner or one of its child buttons changes, a Spinner dispatches the MSAA event EVENT_OBJECT_STATECHANGE with the proper childID for the button or 0 for itself.
Value
The MSAA Value of a Spinner is the value currently held by the Spinner.
The child buttons do not have MSAA values.
When the Value of the Spinner changes, a Spinner dispatches the MSAA event EVENT_OBJECT_VALUECHANGE.
Location
The MSAA Location of a Spinner, or one of its child buttons, is its bounding rectangle.
Default Action
A Spinner 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 Spinner accepts focus. When it does so, it dispatches the MSAA event EVENT_OBJECT_FOCUS event.
Selection
A Spinner does not support selection in the MSAA sense.
Method | Defined By | ||
---|---|---|---|
SpinnerAccImpl(master:UIComponent)
Constructor. | SpinnerAccImpl | ||
An IAccessible method that performs the default action associated with the component
that this AccessibilityImplementation represents or of one of its child elements. | AccessibilityImplementation | ||
MSAA method for returning a DisplayObject or Rectangle
specifying the bounding box of a child element in the AccessibilityImplementation. | AccessibilityImplementation | ||
IAccessible method for altering the selection in the component
that this AccessibilityImplementation represents. | AccessibilityImplementation | ||
[static]
Enables accessibility in the Spinner class. | SpinnerAccImpl | ||
MSAA method for returning the default action of the component
that this AccessibilityImplementation represents or of one of its child elements. | AccessibilityImplementation | ||
MSAA method for returning the unsigned integer ID of the child element, if any,
that has child focus within the component. | AccessibilityImplementation | ||
MSAA method for returning the name for the component
that this AccessibilityImplementation represents or for one of its child elements. | AccessibilityImplementation | ||
MSAA method for returning the system role for the component
that this AccessibilityImplementation represents or for one of its child elements. | AccessibilityImplementation | ||
MSAA method for returning an array containing the IDs of all child elements that are selected. | AccessibilityImplementation | ||
IAccessible method for returning the current runtime state of the component that this
AccessibilityImplementation represents or of one of its child elements. | AccessibilityImplementation | ||
MSAA method for returning the runtime value of the component that this
AccessibilityImplementation represents or of one of its child elements. | AccessibilityImplementation | ||
Returns an array containing the unsigned integer IDs of all child elements
in the AccessibilityImplementation. | AccessibilityImplementation | ||
[static]
Method for supporting Form Accessibility. | AccImpl | ||
Indicates whether an object has a specified property defined. | Object | ||
[static]
Method for supporting state Accessibility. | AccImpl | ||
Indicates whether an instance of the Object class is in the prototype chain of the object specified
as the parameter. | Object | ||
Indicates whether the specified property exists and is enumerable. | Object | ||
Sets the availability of a dynamic property for loop operations. | Object | ||
Returns the string representation of this object, formatted according to locale-specific conventions. | Object | ||
Returns the string representation of the specified object. | Object | ||
Returns the primitive value of the specified object. | Object |
SpinnerAccImpl | () | Constructor |
public function SpinnerAccImpl(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 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.
Fri Mar 19 2010, 02:45 AM -07:00