| /******************************************************************************* |
| * Copyright (c) 2005, 2006 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.jface.internal.databinding.provisional.observable.value; |
| |
| /** |
| * @since 1.0 |
| * |
| */ |
| public interface IValueChangingListener { |
| |
| /** |
| * This method is called when the value is about to change and provides an |
| * opportunity to veto the change. |
| * |
| * @param source |
| * @param diff |
| * @return false if this listener is vetoing the change, true otherwise |
| */ |
| public boolean handleValueChanging(IVetoableValue source, ValueDiff diff); |
| |
| } |
