ej.wadapps.management

Interface BackgroundServicesList

public interface BackgroundServicesList

Holds a list of background services.

Method Summary

Modifier and Type	Method and Description
void	add(BackgroundService background) Adds a background.
void	addObserver(Observer observer) Adds an observer to this background services list.
void	deleteObserver(Observer observer) Deletes an observer.
BackgroundService[]	getBackgroundServices() Gets all registered background services.
void	remove(BackgroundService background) Removes a background.

Method Detail

addObserver

void addObserver(Observer observer)
          throws java.lang.NullPointerException

Adds an observer to this background services list.

The observer will be notified when the background services list will be modified.

Parameters:

observer - an observer to be added.

Throws:

java.lang.NullPointerException - if the given observer is null.

See Also:

Observable.addObserver(Observer), add(BackgroundService), remove(BackgroundService)

deleteObserver

void deleteObserver(Observer observer)

Deletes an observer.

The observer will no longer be notified of this background services list modification.

Parameters:

observer - an observer to be removed.

See Also:

Observable.deleteObserver(Observer)

add

void add(BackgroundService background)

Adds a background.

The observers will be notified with the background as argument.

Parameters:

background - the background to be added.

remove

void remove(BackgroundService background)

Removes a background.

The observers are notified with the background as argument.

Parameters:

background - the background to be removed.

getBackgroundServices

BackgroundService[] getBackgroundServices()

Gets all registered background services.

Returns:

all background services.