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Filtry: AIR 30.0 i wcześniejsze, Flash Player 30.0 i wcześniejsze, Flash Lite 4
Flex 4.6 i wcześniejsze, Flash Pro CS6 i wcześniejsze
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spark.accessibility 

VideoPlayerAccImpl  - AS3 Flex

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Elementy językowe

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Informacje prawne
Pakietspark.accessibility
Klasapublic class VideoPlayerAccImpl
DziedziczenieVideoPlayerAccImpl Inheritance AccImpl Inheritance AccessibilityImplementation Inheritance Object

Wersja języka: ActionScript 3.0
Wersja produktu: Flex 4
Wersje środowiska wykonawczego: Flash Player 10, AIR 2.0

VideoPlayerAccImpl is the accessibility implementation class for spark.components.VideoPlayer.

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:

  1. Play/Pause control
  2. Scrub control
  3. Play time indicator
  4. Mute control
  5. Volume control
  6. 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:

  1. Play/Pause control: ROLE_SYSTEM_BUTTON
  2. Scrub control: ROLE_SYSTEM_SLIDER
  3. Play time indicator: ROLE_SYSTEM_STATICTEXT
  4. Mute control: ROLE_SYSTEM_BUTTON
  5. Volume control: ROLE_SYSTEM_SLIDER
  6. 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:

  1. Play/Pause control: "Play" or "Pause"
  2. Scrub control: "Scrub Bar"
  3. Play time indicator: the displayed text
  4. Mute control: "Muted" or "Not muted"
  5. Volume control: "Volume Bar"
  6. 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:

  1. Play/Pause control:
    • STATE_SYSTEM_UNAVAILABLE
    • STATE_SYSTEM_FOCUSABLE
    • STATE_SYSTEM_FOCUSED
  2. Scrub control:
    • STATE_SYSTEM_UNAVAILABLE
    • STATE_SYSTEM_FOCUSABLE
    • STATE_SYSTEM_FOCUSED
  3. Play time indicator:
    • STATE_SYSTEM_UNAVAILABLE
    • STATE_SYSTEM_READONLY
  4. Mute control:
    • STATE_SYSTEM_UNAVAILABLE
    • STATE_SYSTEM_FOCUSABLE
    • STATE_SYSTEM_FOCUSED
  5. Volume control:
    • STATE_SYSTEM_UNAVAILABLE
    • STATE_SYSTEM_FOCUSABLE
    • STATE_SYSTEM_FOCUSED
  6. 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:

  1. Play/Pause control: no Value
  2. Scrub control: Value of slider as an amount of time
  3. Play time indicator: no Value
  4. Mute control: no Value
  5. Volume control: Value of slider
  6. 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:

  1. Play/Pause control: "Press"
  2. Scrub control: none
  3. Play time indicator: none
  4. Mute control: "Press"
  5. Volume control: none
  6. Full Screen control: "Press"

Performing the default action of one of the child controls will have the following effect:

  1. Play/Pause control: toggle between Play and Pause
  2. Scrub control: none
  3. Play time indicator: none
  4. Mute control: toggle between Mute and Not Muted
  5. Volume control: none
  6. 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:

  1. Play/Pause control: accepts focus
  2. Scrub control: accepts focus
  3. Play time indicator: does not accept focus
  4. Mute control: transfers focus to Volume Bar
  5. Volume control: accepts focus
  6. 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.



Właściwości publiczne
 WłaściwośćZdefiniowane przez
 Inheritedconstructor : Object
Odwołanie do obiektu klasy lub funkcji konstruktora, dotyczące danej instancji obiektu.
Object
 Inheritederrno : uint
Wskazuje kod błędu.
AccessibilityImplementation
 Inheritedstub : Boolean
Służy do tworzenia szkieletu ułatwień dostępu dla składnika.
AccessibilityImplementation
Właściwości chronione
 WłaściwośćZdefiniowane przez
 InheritedeventsToHandle : Array
[tylko do odczytu] All subclasses must override this function by returning an array of strings of the events to listen for.
AccImpl
 Inheritedmaster : UIComponent
A reference to the UIComponent instance that this AccImpl instance is making accessible.
AccImpl
 Inheritedrole : uint
Accessibility role of the component being made accessible.
AccImpl
Metody publiczne
 MetodaZdefiniowane przez
  
Constructor.
VideoPlayerAccImpl
 Inherited
Metoda IAccessible wykonująca domyślą czynność skojarzoną ze składnikiem reprezentowanym przez tę klasę AccessibilityImplementation lub jeden z jego elementów potomnych.
AccessibilityImplementation
 Inherited
accLocation(childID:uint):*
Metoda MSAA zwracająca obiekt DisplayObject lub Rectangle określający obwiednię elementu podrzędnego w klasie AccessibilityImplementation.
AccessibilityImplementation
 Inherited
accSelect(operation:uint, childID:uint):void
Metoda IAccessible służąca do zmiany zaznaczenia w składniku reprezentowanym przez ten obiekt AccessibilityImplementation.
AccessibilityImplementation
  
[statyczny] Enables accessibility in the VideoPlayer class.
VideoPlayerAccImpl
 Inherited
Metoda modelu MSAA służąca do zwracania domyślnej czynności składnika reprezentowanego przez ten obiekt AccessibilityImplementation lub jednego z jego elementów podrzędnych.
AccessibilityImplementation
 Inherited
Metoda MSAA służąca do zwracania identyfikatora (liczby całkowitej bez znaku) elementu podrzędnego, który jest aktywny w składniku, o ile istnieje aktywny element.
AccessibilityImplementation
 Inherited
Metoda modelu MSAA służąca do zwracania nazwy składnika reprezentowanego przez ten obiekt AccessibilityImplementation lub jednego z jego elementów potomnych.
AccessibilityImplementation
 Inherited
Metoda modelu MSAA służąca do zwracania roli systemowej składnika reprezentowanego przez ten obiekt AccessibilityImplementation lub jednego z jego elementów podrzędnych.
AccessibilityImplementation
 Inherited
Metoda modelu MSAA służąca do zwracania tablicy zawierającej identyfikatory wszystkich elementów podrzędnych, które są zaznaczone.
AccessibilityImplementation
 Inherited
Metoda interfejsu IAccessible służąca do zwracania bieżącego stanu (w środowisku wykonawczym) składnika reprezentowanego przez ten obiekt AccessibilityImplementation lub jednego z jego elementów potomnych.
AccessibilityImplementation
 Inherited
Metoda modelu MSAA służąca do zwracania wartości (w środowisku wykonawczym) składnika reprezentowanego przez ten obiekt AccessibilityImplementation lub jednego z jego elementów podrzędnych.
AccessibilityImplementation
 Inherited
AccessibilityImplementation
 Inherited
AccessibilityImplementation
 Inherited
Zwraca tablicę zawierającą identyfikatory (liczby całkowite bez znaku) wszystkich elementów podrzędnych w obiekcie AccessibilityImplementation.
AccessibilityImplementation
 Inherited
[statyczny] Method for supporting Form Accessibility.
AccImpl
 Inherited
Wskazuje, czy dla obiektu zdefiniowano określoną właściwość.
Object
 Inherited
[statyczny] Returns true if an ancestor of the component has enabled set to false.
AccImpl
 Inherited
Zwraca wartość true albo false, wskazując, czy obiekt tekstowy o obwiedni określonej przez parametry x, y, width i height powinien być uznawany za etykietę składnika reprezentowanego przez ten obiekt AccessibilityImplementation.
AccessibilityImplementation
 Inherited
Wskazuje, czy instancja klasy Object należy do łańcucha prototypów obiektu określonego jako parametr.
Object
 Inherited
Wskazuje, czy określona właściwość istnieje i jest przeliczalna.
Object
 Inherited
Ustawia dostępność właściwości dynamicznej używanej w pętlach.
Object
 Inherited
Zwraca ciąg reprezentujący obiekt — sformatowany zgodnie z konwencjami właściwymi dla ustawień regionalnych.
Object
 Inherited
Zwraca ciąg reprezentujący określony obiekt.
Object
 Inherited
Zwraca pierwotną wartość dla określonego obiektu.
Object
Metody chronione
 MetodaZdefiniowane przez
 Inherited
Generic event handler.
AccImpl
 Inherited
Returns the name of the accessible component.
AccImpl
 Inherited
getState(childID:uint):uint
Utility method to determine state of the accessible component.
AccImpl
Konstruktor Szczegół

VideoPlayerAccImpl

()Konstruktor
public function VideoPlayerAccImpl(master:UIComponent)

Wersja języka: ActionScript 3.0
Wersja produktu: Flex 4
Wersje środowiska wykonawczego: Flash Player 10, AIR 2.0

Constructor.

Parametry
master:UIComponent — The UIComponent instance that this AccImpl instance is making accessible.
Szczegół metody

enableAccessibility

()metoda
public static function enableAccessibility():void

Wersja języka: ActionScript 3.0
Wersja produktu: Flex 4
Wersje środowiska wykonawczego: 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.





[ X ]Dlaczego język angielski?
Treść dokumentacji języka ActionScript 3.0 wyświetlana w języku angielskim

Niektóre części dokumentacji języka ActionScript 3.0 nie są przetłumaczone na poszczególne języki. Gdy element nie jest przetłumaczony na dany język, jest wyświetlany tekst angielski. Na przykład opis klasy ga.controls.HelpBox nie jest przetłumaczony na żaden dodatkowy język. Z tego powodu polska wersja dokumentacji zawiera opis klasy ga.controls.HelpBox w języku angielskim.