| /******************************************************************************* |
| * Copyright (c) 2006, 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.internal.databinding.observable.tree; |
| |
| /** |
| * Describes the difference between two trees as a tree of tree diff nodes. |
| * |
| * @since 1.1 |
| * |
| */ |
| public abstract class TreeDiff extends TreeDiffNode { |
| |
| /** |
| * Returns the tree path (possibly empty) of the parent, or |
| * <code>null</code> if the underlying tree is not lazy and never contains |
| * duplicate elements. |
| * |
| * @return the tree path (possibly empty) of the unchanged parent, or |
| * <code>null</code> |
| */ |
| public abstract TreePath getParentPath(); |
| |
| /** |
| * @param visitor |
| */ |
| public void accept(TreeDiffVisitor visitor) { |
| doAccept(visitor, getParentPath()); |
| } |
| |
| } |