Mercurial > projects > dwt2
view org.eclipse.core.databinding.observable/src/org/eclipse/core/databinding/observable/value/IValueChangingListener.d @ 95:6208d4f6a277
Added trees for databinding.beans and observable
author | Frank Benoit <benoit@tionex.de> |
---|---|
date | Tue, 21 Apr 2009 10:55:51 +0200 |
parents | |
children | b74ac5dfcc06 |
line wrap: on
line source
/******************************************************************************* * Copyright (c) 2005, 2007 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.core.databinding.observable.value; import org.eclipse.core.databinding.observable.IObservablesListener; /** * Listener for pre-change events for observable values. * * @since 1.0 * */ public interface IValueChangingListener : IObservablesListener { /** * This method is called when the value is about to change and provides an * opportunity to veto the change. The given event object must only be used * locally in this method because it may be reused for other change * notifications. The diff object referenced by the event is immutable and * may be used non-locally. * * @param event */ public void handleValueChanging(ValueChangingEvent event); }