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Spark TextBaseAccImpl

SourceForge Editorial Staff

class spark.accessibility.TextBaseAccImpl

This is the accessibility implementation class for spark.components.TextBase. When a Spark Label or RichText component 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 Label or RichText component. See the mx.accessibility.AccImpl and flash.accessibility.AccessibilityImplementation classes for background information about accessibility implementation classes and MSAA.

Children

A TextBase has no MSAA children.

Role

The MSAA Role of a TextBase is ROLE_SYSTEM_STATICTEXT.

Name

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

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

Description

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

State

The MSAA State of a TextBase is a combination of:

  • STATE_SYSTEM_UNAVAILABLE (when enabled is false)
  • STATE_SYSTEM_READONLY

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

Value

A TextBase does not have an MSAA Value.

Location

The MSAA Location of a TextBase is its bounding rectangle.

Default Action

A TextBase does not have an MSAA DefaultAction.

Focus

A TextBase does not accept focus.

Selection

A TextBase does not support selection in the MSAA sense.

Other

MSAA documentation suggests that the accessibilityShortcut should be set to the shortcut keystroke for any associated input component. Since shortcut is an AccessibilityProperty and not implementable by AccessibilityImplementation it is not addressed in TextBaseAccImpl.


Related

Wiki: Accessibility for Spark Components

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