oracle.ide.addin
Interface VetoableSubject

All Superinterfaces:

Subject

All Known Subinterfaces:

WorkEnvironment

All Known Implementing Classes:

Project

public interface VetoableSubject

extends Subject

VetoableSubject interface defines the API to register observers interested in receiving notifications of pending subject changes. Classes that want to veto a pending Subject change should attach an VetoObserver to a VetoableSubject in order to approve the change.

See Also:

oracle.ide.VetoableObserver, oracle.ide.VetoableMessage

Field Summary

Fields inherited from interface oracle.ide.addin.Subject

OBJECT_MODIFIED

Method Summary

void	notifyObservers(java.lang.Object subject, VetoableMessage change) Notifies all observers that the state of the subject has changed.

Methods inherited from interface oracle.ide.addin.Subject

attach, detach, notifyObservers

Method Detail

notifyObservers

public void notifyObservers(java.lang.Object subject,
                            VetoableMessage change)
                     throws ChangeVetoException

Notifies all observers that the state of the subject has changed.

Parameters:

subject - the subject whose state has changed.

change - what changed.

Throws:

ChangeVetoException