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Copyright © 2006 Sun Microsystems, Inc. All rights reserved.

javax.tv.service.selection
Class AlternativeContentEvent

java.lang.Object
  java.util.EventObject
      javax.tv.service.selection.ServiceContextEvent
          javax.tv.service.selection.PresentationChangedEvent
              javax.tv.service.selection.AlternativeContentEvent

All Implemented Interfaces:

java.io.Serializable

public class AlternativeContentEvent

extends PresentationChangedEvent

AlternativeContentEvent is generated to indicate that "alternative" content is being presented during the presentation of a service. Alternative content is content not actually part of the requested service, such as content related to conditional access failures (e.g., purchase dialogs or advertising for content for which the user is not yet authorized). The presentation of alternative content is always initiated by the system and never by applications.

This event will be generated in two situations:

• At the end of a successful service selection operation, this event will be generated if any of the service components being presented are alternative content. Under these conditions, the generation of this event signals a change in state of the service context from the presentation pending state to the presenting state. A NormalContentEvent will not be generated.
• During the presentation of a service, this event will be generated if any of the service components being presented are replaced by alternative content. One example of this is the expiration of a free preview period. In this case, generation of this event does not impact the service context state model.

Presentation failures enforced via a conditional access system may be reported by this event or by a SelectionFailedEvent with the CA_REFUSAL reason code. Which of these is used depends on the precise nature of the conditional access system. Applications must allow for both modes of failure.

See Also:

NormalContentEvent, SelectionFailedEvent, Serialized Form

Field Summary

Fields inherited from class java.util.EventObject

source

Constructor Summary

AlternativeContentEvent(ServiceContext source)
Constructs the event.

Methods inherited from class javax.tv.service.selection.ServiceContextEvent

getServiceContext

Methods inherited from class java.util.EventObject

getSource, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

AlternativeContentEvent

public AlternativeContentEvent(ServiceContext source)

Constructs the event.

Parameters:

source - The ServiceContext that generated the event.