VideoPlayerAccImpl

Pacote	spark.accessibility
Classe	public class VideoPlayerAccImpl
Herança	VideoPlayerAccImpl AccImpl AccessibilityImplementation Object

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 4

Versões de runtime:

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:

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.

Propriedades públicas

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	Propriedade		Definido por
		constructor : Object Uma referência ao objeto de classe ou à função de construtor de uma determinada ocorrência de objeto.	Object
		errno : uint Indica um código de erro.	AccessibilityImplementation
		stub : Boolean Usado para criar um tronco de acessibilidade do componente.	AccessibilityImplementation

Propriedades protegidas

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	Propriedade		Definido por
		eventsToHandle : Array [somente leitura] 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

Métodos públicos

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	Método		Definido por
		VideoPlayerAccImpl(master:UIComponent) Constructor.	VideoPlayerAccImpl
		accDoDefaultAction(childID:uint):void Um método IAccessible que executa a ação padrão associada ao componente que esta AccessibilityImplementation representa ou um do seus elementos filho.	AccessibilityImplementation
		accLocation(childID:uint):* Método de MSAA para retornar um DisplayObject ou Retângulo que especifica a caixa delimitadora de um elemento de filho no AccessibilityImplementation.	AccessibilityImplementation
		accSelect(operation:uint, childID:uint):void Método IAccessible para alterar a seleção no componente que esta AccessibilityImplementation representa.	AccessibilityImplementation
		enableAccessibility():void [estático] Enables accessibility in the VideoPlayer class.	VideoPlayerAccImpl
		get_accDefaultAction(childID:uint):String Método de MSAA para retornar a ação de padrão do componente que este AccessibilityImplementation representa ou de um dos seus elementos de filho.	AccessibilityImplementation
		get_accFocus():uint Método MSAA para retornar o ID do inteiro sem sinal do elemento filho, se houver, que este filho focaliza no componente.	AccessibilityImplementation
		get_accName(childID:uint):String Método de MSAA para retornar o nome do componente que este AccessibilityImplementation representa ou para um dos seus elementos de filho.	AccessibilityImplementation
		get_accRole(childID:uint):uint Método MSAA para retornar a função do sistema para o componente que esta AccessibilityImplementation representa ou um do seus elementos filho.	AccessibilityImplementation
		get_accSelection():Array Método MSAA para retornar uma matriz que contém os IDs de todos os elementos filho que foram selecionados.	AccessibilityImplementation
		get_accState(childID:uint):uint O método de IAccessible para retornar a estatal em tempo de execução atual do componente que este AccessibilityImplementation representa ou de um dos seus elementos de filho.	AccessibilityImplementation
		get_accValue(childID:uint):String Método de MSAA para retornar o valor em tempo de execução do componente que este AccessibilityImplementation representa ou de um dos seus elementos de filho.	AccessibilityImplementation
		get_selectionActiveIndex():*	AccessibilityImplementation
		get_selectionAnchorIndex():*	AccessibilityImplementation
		getChildIDArray():Array Retorna uma matriz que contém as IDs dos inteiros sem sinal de todos os elementos filho na AccessibilityImplementation.	AccessibilityImplementation
		getFormName(component:UIComponent):String [estático] Method for supporting Form Accessibility.	AccImpl
		hasOwnProperty(name:String):Boolean Indica se um objeto tem uma propriedade especificada definida.	Object
		isAncestorDisabled(component:UIComponent):Boolean [estático] Returns true if an ancestor of the component has enabled set to false.	AccImpl
		isLabeledBy(labelBounds:Rectangle):Boolean retorna verdadeiro ou falso para indicar se um objeto de texto que especifica uma caixa delimitadora por um x, y, largura, e altura deve considerar-se um rótulo do componente que este AccessibilityImplementation representa.	AccessibilityImplementation
		isPrototypeOf(theClass:Object):Boolean Indica se uma ocorrência da classe Object está na cadeia de protótipos do objeto especificado como o parâmetro.	Object
		propertyIsEnumerable(name:String):Boolean Indica se a propriedade especificada existe e é enumerável.	Object
		setPropertyIsEnumerable(name:String, isEnum:Boolean = true):void Define a disponibilidade de uma propriedade dinâmica para operações de repetição.	Object
		toLocaleString():String Retorna a representação da string deste objeto, formatado segundo as convenções específicas para a localidade.	Object
		toString():String Retorna a representação de string do objeto especificado.	Object
		valueOf():Object Retorna o valor primitivo do objeto especificado.	Object

Métodos protegidos

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	Método		Definido por
		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

Detalhes do construtor

()

Construtor

public function VideoPlayerAccImpl(master:UIComponent)

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 4

Versões de runtime:

Flash Player 10, AIR 2.0

Constructor.

Parâmetros

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

Detalhes do método

enableAccessibility

()

método

public static function enableAccessibility():void

Versão da linguagem:

ActionScript 3.0

Versão de produto:

Flex 4

Versões de 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.

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VideoPlayerAccImpl - AS3 Flex

Classes x

VideoPlayerAccImpl

enableAccessibility