| Pacchetto | spark.accessibility |
| Classe | public class VideoPlayerAccImpl |
| Ereditarietà | VideoPlayerAccImpl  AccImpl AccessibilityImplementation Object |
| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 2.0 |
When a Spark VideoPlayer 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 VideoPlayer.
See the mx.accessibility.AccImpl and
flash.accessibility.AccessibilityImplementation classes
for background information about accessibility implementation
classes and MSAA.
Children
The VideoPlayer has six MSAA children:
- Play/Pause control
- Scrub control
- Play time indicator
- Mute control
- Volume control
- Full Screen control
The controls will always appear in the same order for accessibility regardless of the order of controls in the skin.
Role
The MSAA Role of a VideoPlayer is ROLE_SYSTEM_PANE.
The Role of each child control is:
- Play/Pause control: ROLE_SYSTEM_BUTTON
- Scrub control: ROLE_SYSTEM_SLIDER
- Play time indicator: ROLE_SYSTEM_STATICTEXT
- Mute control: ROLE_SYSTEM_BUTTON
- Volume control: ROLE_SYSTEM_SLIDER
- Full Screen control: ROLE_SYSTEM_BUTTON
Name
The MSAA Name of a VideoPlayer is, by default,
specified by a locale-dependent resource.
For the en_US locale, the name is "VideoPlayer".
When wrapped in a FormItem element,
this name is combined with the FormItem's label.
To override this behavior,
set the VideoPlayer's's accessibilityName property.
The Name of each child control is similarly specified by a resource. The en_US names are:
- Play/Pause control: "Play" or "Pause"
- Scrub control: "Scrub Bar"
- Play time indicator: the displayed text
- Mute control: "Muted" or "Not muted"
- Volume control: "Volume Bar"
- Full Screen control: "Full Screen"
To override the names of these child controls, reskin the VideoPlayer
and set the accessibilityName of the controls.
Note that the Play/Pause control and the Mute control
have MSAA Names which change as you interact with them.
To specify them, set accessibilityName
to a comma-separated list of MSAA Names,
such as "Play,Pause" or "Not Muted,Muted".
When the Name of the VideoPlayer or one of its child controls changes, a VideoPlayer dispatches the MSAA event EVENT_OBJECT_NAMECHANGE with the proper childID for the control or 0 for itself.
Description
The MSAA Description of a VideoPlayer is, by default, the empty string,
but you can set the VideoPlayer's accessibilityDescription
property.
The Description of each child control is the empty string.
State
The MSAA State of a VideoPlayer is STATE_SYSTEM_NORMAL.
The State of each child control is:
- Play/Pause control:
- STATE_SYSTEM_UNAVAILABLE
- STATE_SYSTEM_FOCUSABLE
- STATE_SYSTEM_FOCUSED
- Scrub control:
- STATE_SYSTEM_UNAVAILABLE
- STATE_SYSTEM_FOCUSABLE
- STATE_SYSTEM_FOCUSED
- Play time indicator:
- STATE_SYSTEM_UNAVAILABLE
- STATE_SYSTEM_READONLY
- Mute control:
- STATE_SYSTEM_UNAVAILABLE
- STATE_SYSTEM_FOCUSABLE
- STATE_SYSTEM_FOCUSED
- Volume control:
- STATE_SYSTEM_UNAVAILABLE
- STATE_SYSTEM_FOCUSABLE
- STATE_SYSTEM_FOCUSED
- Full Screen control:
- STATE_SYSTEM_UNAVAILABLE
- STATE_SYSTEM_FOCUSABLE
- STATE_SYSTEM_FOCUSED
When the State of the VideoPlayer or one of its child controls changes, a VideoPlayer dispatches the MSAA event EVENT_OBJECT_STATECHANGE with the proper childID for the control or 0 for itself.
Value
A VideoPlayer does not have an MSAA Value.
THe Value of each child control is:
- Play/Pause control: no Value
- Scrub control: Value of slider as an amount of time
- Play time indicator: no Value
- Mute control: no Value
- Volume control: Value of slider
- Full Screen control: no Value
When the Value of a child control changes, a VideoPlayer dispatches the MSAA event EVENT_OBJECT_VALUECHANGE with the proper childID for the control.
Location
The MSAA Location of a VideoPlayer, or one of its child controls, is its bounding rectangle.
Default Action
A VideoPlayer does not have an MSAA DefaultAction.
The DefaultAction of each child control is:
- Play/Pause control: "Press"
- Scrub control: none
- Play time indicator: none
- Mute control: "Press"
- Volume control: none
- Full Screen control: "Press"
Performing the default action of one of the child controls will have the following effect:
- Play/Pause control: toggle between Play and Pause
- Scrub control: none
- Play time indicator: none
- Mute control: toggle between Mute and Not Muted
- Volume control: none
- Full Screen control: toogle Full Screen on and off
Focus
A VideoPlayer accepts focus. When it does so, it dispatches the MSAA event EVENT_OBJECT_FOCUS event.
Some of its child controls also accept focus:
- Play/Pause control: accepts focus
- Scrub control: accepts focus
- Play time indicator: does not accept focus
- Mute control: transfers focus to Volume Bar
- Volume control: accepts focus
- Full Screen control: accepts focus
When reporting focus, the VideoPlayer reports itself if it is focused and none of its child controls is focused. Otherwise, the focus may be reported as being on the Play/Pause control, the Scrub control, the Volume control, or the Full Screen control.
Selection
A VideoPlayer does not support selection in the MSAA sense.
Nascondi proprietà pubbliche ereditate
Mostra proprietà pubbliche ereditate| Metodo | Definito da | ||
|---|---|---|---|
VideoPlayerAccImpl(master:UIComponent)
Constructor. | VideoPlayerAccImpl | ||
 |
Un metodo IAccessible che esegue l'azione predefinita associata al componente che questa AccessibilityImplementation rappresenta o di uno dei suoi elementi secondari. | AccessibilityImplementation | |
|
Il metodo MSAA per restituire un oggetto DisplayObject o Rectangle che specifica il rettangolo di delimitazione di un elemento secondario nella AccessibilityImplementation. | AccessibilityImplementation | |
|
Metodo IAccessible per modificare la selezione nel componente rappresentato da questo AccessibilityImplementation. | AccessibilityImplementation | |
[statico]
Enables accessibility in the VideoPlayer class. | VideoPlayerAccImpl | ||
|
Metodo MSAA per restituire l'azione predefinita del componente che questa AccessibilityImplementation rappresenta o di uno dei suoi elementi secondari. | AccessibilityImplementation | |
|
Metodo MSAA per restituire l'ID intero senza firma dell'elemento secondario (se presente) che ha lo stato di attivazione all'interno del componente. | AccessibilityImplementation | |
|
Metodo MSAA per restituire il nome del componente che questa AccessibilityImplementation rappresenta o di uno dei suoi elementi secondari. | AccessibilityImplementation | |
|
Metodo MSAA per restituire il ruolo di sistema del componente che questa AccessibilityImplementation rappresenta o di uno dei suoi elementi secondari. | AccessibilityImplementation | |
|
Metodo MSAA per restituire un array contenente gli ID di tutti gli elementi secondari selezionati. | AccessibilityImplementation | |
|
Metodo IAccessible per restituire lo stato runtime corrente del componente che questa AccessibilityImplementation rappresenta o di uno dei suoi elementi secondari. | AccessibilityImplementation | |
|
Metodo MSAA per restituire il valore runtime del componente che questa AccessibilityImplementation rappresenta o di uno dei suoi elementi secondari. | AccessibilityImplementation | |
| AccessibilityImplementation | ||
| AccessibilityImplementation | ||
|
Restituisce un array contenente gli ID interi senza firma di tutti gli elementi secondari di AccessibilityImplementation. | AccessibilityImplementation | |
| [statico]
Method for supporting Form Accessibility. | AccImpl | |
|
Indica se per un oggetto è definita una proprietà specifica. | Object | |
| [statico]
Returns true if an ancestor of the component has enabled set to false. | AccImpl | |
|
Restituisce true o false per indicare se un oggetto di testo che presenta un rettangolo di delimitazione specificato da valori x, y, width e height deve essere considerato un'etichetta per il componente rappresentato da questa AccessibilityImplementation. | AccessibilityImplementation | |
|
Indica se un'istanza della classe Object si trova nella catena di prototipi dell'oggetto specificato come parametro. | Object | |
|
Indica se la proprietà specificata esiste ed è enumerabile. | Object | |
|
Imposta la disponibilità di una proprietà dinamica per le operazioni cicliche. | Object | |
|
Restituisce la rappresentazione in formato stringa di questo oggetto, formattato in base alle convenzioni specifiche per le versioni localizzate. | Object | |
|
Restituisce la rappresentazione in formato stringa dell'oggetto specificato. | Object | |
|
Restituisce il valore di base dell'oggetto specificato. | Object | |
VideoPlayerAccImpl | () | Funzione di costruzione |
public function VideoPlayerAccImpl(master:UIComponent)| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 2.0 |
Constructor.
Parametrimaster:UIComponent — The UIComponent instance that this AccImpl instance
is making accessible.
|
enableAccessibility | () | metodo |
public static function enableAccessibility():void| Versione linguaggio: | ActionScript 3.0 |
| Versione prodotto: | Flex 4 |
| Versioni runtime: | Flash Player 10, AIR 2.0 |
Enables accessibility in the VideoPlayer class.
This method is called by application startup code
that is autogenerated by the MXML compiler.
Afterwards, when instances of VideoPlayer are initialized,
their accessibilityImplementation property
will be set to an instance of this class.
Tue Jun 12 2018, 02:44 PM Z