| /******************************************************************************* |
| * 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; |
| |
| /** |
| * Context sensitive children update request for a parent and subrange of its |
| * children. |
| * |
| * @since 3.3 |
| */ |
| public interface IChildrenUpdate extends IViewerUpdate { |
| |
| /** |
| * Returns the parent element that children are being requested for |
| * as a tree path. An empty path identifies the root element. |
| * |
| * @return parent element as a tree path |
| */ |
| public TreePath getParent(); |
| |
| /** |
| * Returns the offset at which children have been requested for. This is |
| * the index of the first child being requested. |
| * |
| * @return offset at which children have been requested for |
| */ |
| public int getOffset(); |
| |
| /** |
| * Returns the number of children requested. |
| * |
| * @return number of children requested |
| */ |
| public int getLength(); |
| |
| /** |
| * Sets the child for this request's parent at the given offset. |
| * |
| * @param child child |
| * @param index child offset |
| * |
| * TODO: what to do with <code>null</code> |
| */ |
| public void setChild(Object child, int index); |
| } |