oracle.ide.model
Interface VetoObserver

public interface VetoObserver

VetoObserver interface defines the notification API through which interested observers are notified of pending subject changes. VetoObservers can the indicate that they do not accept the pending change.

See Also:

UpdateMessage, VetoableSubject

Method Summary

void	vetoableUpdate(java.lang.Object observed, UpdateMessage change) Notification message.

Method Detail

vetoableUpdate

void vetoableUpdate(java.lang.Object observed,
                    UpdateMessage change)
                    throws ChangeVetoException

Notification message. Subjects call this method when they notify their observers that the subjects state is about to be changed.

Parameters:

observed - the subject whose state has changed.

change - what has changed.

Throws:

ChangeVetoException - if the pending update is rejected by the vetoableUpdate implementation.