net.aerith.misao.util
Class OperationObservable

java.lang.Object
  |
  +--net.aerith.misao.util.OperationObservable

Direct Known Subclasses:

CatalogTreeManager, GlobalDBManager, Operation, ThumbnailImageCreater

public abstract class OperationObservable

extends java.lang.Object

The OperationObservable represents an object with an operation whose progress is observable.

Field Summary

protected java.util.Vector

observer_list The list of observers.

Constructor Summary

OperationObservable()

Method Summary

void	addObserver(OperationObserver observer) Adds an observer.
void	deleteObserver(OperationObserver observer) Removes an observer.
protected void	notifyEnd(java.lang.Exception exception) Notifies when the operation ends.
protected void	notifyFailed(java.lang.Object arg) Notifies when a task is failed.
protected void	notifyStart() Notifies when the operation starts.
protected void	notifySucceeded(java.lang.Object arg) Notifies when a task is succeeded.
protected void	notifyWarned(java.lang.Object arg) Notifies when a task is warned.

Methods inherited from class java.lang.Object

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

Field Detail

observer_list

protected java.util.Vector observer_list

The list of observers.

Constructor Detail

OperationObservable

public OperationObservable()

Method Detail

addObserver

public void addObserver(OperationObserver observer)

Adds an observer.

Parameters:

observer - an observer

deleteObserver

public void deleteObserver(OperationObserver observer)

Removes an observer.

Parameters:

observer - an observer

notifyStart

protected void notifyStart()

Notifies when the operation starts.

notifyEnd

protected void notifyEnd(java.lang.Exception exception)

Notifies when the operation ends.

Parameters:

exception - the exception if an error occurs, or null if succeeded.

notifySucceeded

protected void notifySucceeded(java.lang.Object arg)

Notifies when a task is succeeded.

Parameters:

arg - the argument.

notifyFailed

protected void notifyFailed(java.lang.Object arg)

Notifies when a task is failed.

Parameters:

arg - the argument.

notifyWarned

protected void notifyWarned(java.lang.Object arg)

Notifies when a task is warned.

Parameters:

arg - the argument.