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RichEditableTextAccImpl

Package | spark.accessibility
Class | public class RichEditableTextAccImpl
Inheritance | RichEditableTextAccImpl AccImpl flash.accessibility.AccessibilityImplementation

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10, AIR 1.5

RichEditableTextAccImpl is the accessibility implementation class for spark.components.RichEditableText.

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

Children

A RichEditableText has no MSAA children.

Role

The MSAA Role of a RichEditableText is ROLE_SYSTEM_TEXT.

Name

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

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

Description

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

State

The MSAA State of a RichEditableText 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 RichEditableText has focus)
- STATE_SYSTEM_PROTECTED (when displayAsPassword is true)
- STATE_SYSTEM_READONLY (when editable is false)

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

Value

The MSAA Value of a RichEditableText is equal to its `text` property.

When the Value changes, a RichEditableText dispatches the MSAA event EVENT_OBJECT_VALUECHANGE.

Location

The MSAA Location of a RichEditableText is its bounding rectangle.

Default Action

A RichEditableText does not have an MSAA DefaultAction.

Focus

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

Selection

A RichEditableText does not support selection in the MSAA sense, and text selection is not part of Microsoft's IAccessibility COM interface. But, in Player 10.1 and later, screen readers can determine the currently selected text range via the `GetSelection()` method in Adobe's ISimpleTextSelection COM interface, which calls the `selectionAnchorIndex` and `selectionActiveIndex` getters in this class.

Public Properties

| Property | Defined By
--- | --- | ---
|  | selectionActiveIndex : int [read-only] A character position, relative to the beginning of the text String of the RichEditableText, specifying the end of the selection that moves when the selection is extended with the arrow keys. | RichEditableTextAccImpl
|  | selectionAnchorIndex : int [read-only] A character position, relative to the beginning of the text String of the RichEditableText, specifying the end of the selection that stays fixed when the selection is extended with the arrow keys. | RichEditableTextAccImpl

Protected Properties
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| Property | Defined By
--- | --- | ---
|  | eventsToHandle : Array [read-only] All subclasses must override this function by returning an array of strings of the events to listen for. | AccImpl
|  | master : UIComponent A reference to the UIComponent instance that this AccImpl instance is making accessible. | AccImpl
|  | role : uint Accessibility role of the component being made accessible. | AccImpl

Public Methods
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| Method | Defined By
--- | --- | ---
|  | RichEditableTextAccImpl(master:UIComponent) Constructor. | RichEditableTextAccImpl
|  | enableAccessibility():void [static] Enables accessibility in the RichEditableText class. | RichEditableTextAccImpl
|  | 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

Protected Methods
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| Method | Defined By
--- | --- | ---
|  | eventHandler(event:Event):void Generic event handler. | AccImpl
|  | getName(childID:uint):String Returns the name of the accessible component. | AccImpl
|  | getState(childID:uint):uint Utility method to determine state of the accessible component. | AccImpl

Property Detail

selectionActiveIndex | property

`selectionActiveIndex:int` [read-only]

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10.1, AIR 2.0

A character position, relative to the beginning of the `text` String of the RichEditableText, specifying the end of the selection that moves when the selection is extended with the arrow keys.

The active position may be either the start or the end of the selection.

For example, if you drag-select from position 12 to position 8, then `selectionAnchorPosition` will be 12 and `selectionActivePosition` will be 8, and when you press Left-Arrow `selectionActivePosition` will become 7.

A value of -1 indicates "not set".

In Player 10.1 and later, and AIR 2.0 and later, an AccessibilityImplementation can implement `selectionAnchorIndex` and `selectionAnchorIndex` in order to make an accessibility client aware of the text selection in TLF text via Adobe's ISimpleTextSelection COM interface.

The default value is `-1`.

Implementation
`public function get selectionActiveIndex():int`

See also

spark.accessibility.RichEditableTextAccImpl.selectionAnchorIndex
spark.components.RichEditableText.selectionActivePosition

selectionAnchorIndex | property |

`selectionAnchorIndex:int` [read-only]

Language Version : | ActionScript 3.0

Product Version : | Flex 4

Runtime Versions : | Flash Player 10.1, AIR 2.0

A character position, relative to the beginning of the `text` String of the RichEditableText, specifying the end of the selection that stays fixed when the selection is extended with the arrow keys.

The anchor position may be either the start or the end of the selection.

For example, if you drag-select from position 12 to position 8, then `selectionAnchorPosition` will be 12 and `selectionActivePosition` will be 8, and when you press Left-Arrow `selectionActivePosition` will become 7.

A value of -1 indicates "not set".

In Player 10.1 and later, and AIR 2.0 and later, an AccessibilityImplementation can implement `selectionAnchorIndex` and `selectionAnchorIndex` in order to make an accessibility client aware of the text selection in TLF text via Adobe's ISimpleTextSelection COM interface.

The default value is `-1`.

Implementation
`public function get selectionAnchorIndex():int`

See also

spark.accessibility.RichEditableTextAccImpl.selectionActiveIndex
spark.components.RichEditableText.selectionAnchorPosition
Constructor Detail

RichEditableTextAccImpl | () | Constructor

`public function RichEditableTextAccImpl(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 RichEditableText class.

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

Sun Mar 5 2017, 03:42 PM +11:00