/* This file is part of the db4o object database http://www.db4o.com
Copyright (C) 2004 - 2011 Versant Corporation http://www.versant.com
db4o is free software; you can redistribute it and/or modify it under
the terms of version 3 of the GNU General Public License as published
by the Free Software Foundation.
db4o is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License along
with this program. If not, see http://www.gnu.org/licenses/. */
package com.db4o.events;
/**
* Argument for events related to cancellable actions.
*
* @see EventRegistry
*/
public interface CancellableEventArgs {
/**
* Queries if the action was already cancelled by some event listener.
*
* @sharpen.property
*/
public boolean isCancelled();
/**
* Cancels the action related to this event.
* Although the related action will be cancelled all the registered
* listeners will still receive the event.
*/
public void cancel();
}