Package org.jitsi.util.event

Class VideoNotifierSupport

java.lang.Object

org.jitsi.util.event.VideoNotifierSupport

public class VideoNotifierSupport
extends Object

Represents a mechanism to easily add to a specific Object by means of composition support for firing VideoEvents to VideoListeners.

Author:

Lyubomir Marinov

Constructor Summary

Constructors

Constructor	Description
VideoNotifierSupport(Object source)	Initializes a new VideoNotifierSupport instance which is to facilitate the management of VideoListeners and firing VideoEvents to them for a specific Object.
VideoNotifierSupport(Object source, boolean synchronous)	Initializes a new VideoNotifierSupport instance which is to facilitate the management of VideoListeners and firing VideoEvents to them for a specific Object.

Method Summary

Modifier and Type	Method	Description
void	addVideoListener(VideoListener listener)	Adds a specific VideoListener to this VideoNotifierSupport in order to receive notifications when visual/video Components are being added and removed.
protected void	doFireVideoEvent(VideoEvent event)
boolean	fireVideoEvent(int type, Component visualComponent, int origin, boolean wait)	Notifies the VideoListeners registered with this VideoMediaStream about a specific type of change in the availability of a specific visual Component depicting video.
void	fireVideoEvent(VideoEvent event, boolean wait)	Notifies the VideoListeners registered with this instance about a specific VideoEvent.
void	removeVideoListener(VideoListener listener)	Removes a specific VideoListener from this VideoNotifierSupport in order to have to no longer receive notifications when visual/video Components are being added and removed.

Methods inherited from class java.lang.Object

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

Constructor Detail

VideoNotifierSupport

public VideoNotifierSupport(Object source)

Initializes a new VideoNotifierSupport instance which is to facilitate the management of VideoListeners and firing VideoEvents to them for a specific Object.

Parameters:

source - the Object which is to be reported as the source of the VideoEvents fired by the new instance

VideoNotifierSupport

public VideoNotifierSupport(Object source,
                            boolean synchronous)

Initializes a new VideoNotifierSupport instance which is to facilitate the management of VideoListeners and firing VideoEvents to them for a specific Object.

Parameters:

source - the Object which is to be reported as the source of the VideoEvents fired by the new instance

synchronous - true if the new instance is to deliver the VideoEvents synchronously; otherwise, false

Method Detail

addVideoListener

public void addVideoListener(VideoListener listener)

Adds a specific VideoListener to this VideoNotifierSupport in order to receive notifications when visual/video Components are being added and removed.

Adding a listener which has already been added does nothing i.e. it is not added more than once and thus does not receive one and the same VideoEvent multiple times.

Parameters:

listener - the VideoListener to be notified when visual/video Components are being added or removed in this VideoNotifierSupport

doFireVideoEvent

protected void doFireVideoEvent(VideoEvent event)

fireVideoEvent

public boolean fireVideoEvent(int type,
                              Component visualComponent,
                              int origin,
                              boolean wait)

Notifies the VideoListeners registered with this VideoMediaStream about a specific type of change in the availability of a specific visual Component depicting video.

Parameters:

type - the type of change as defined by VideoEvent in the availability of the specified visual Component depicting video

visualComponent - the visual Component depicting video which has been added or removed

origin - VideoEvent.LOCAL if the origin of the video is local (e.g. it is being locally captured); VideoEvent.REMOTE if the origin of the video is remote (e.g. a remote peer is streaming it)

wait - true if the call is to wait till the specified VideoEvent has been delivered to the VideoListeners; otherwise, false

Returns:

true if this event and, more specifically, the visual Component it describes have been consumed and should be considered owned, referenced (which is important because Components belong to a single Container at a time); otherwise, false

fireVideoEvent

public void fireVideoEvent(VideoEvent event,
                           boolean wait)

Notifies the VideoListeners registered with this instance about a specific VideoEvent.

Parameters:

event - the VideoEvent to be fired to the VideoListeners registered with this instance

wait - true if the call is to wait till the specified VideoEvent has been delivered to the VideoListeners; otherwise, false

removeVideoListener

public void removeVideoListener(VideoListener listener)

Removes a specific VideoListener from this VideoNotifierSupport in order to have to no longer receive notifications when visual/video Components are being added and removed.

Parameters:

listener - the VideoListener to no longer be notified when visual/video Components are being added or removed