| /******************************************************************************* |
| * Copyright (c) 2006, 2011 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Wind River - Pawel Piech - Need a clarification on usage of IElement*Provider interfaces with update arrays (Bug 213609) |
| *******************************************************************************/ |
| package org.eclipse.debug.internal.ui.viewers.model.provisional; |
| |
| /** |
| * Used to save and restore viewer selection/expansion state. A memento |
| * provider adapter should be available from a viewer input element |
| * in order to support viewer state save/restore. |
| * <p> |
| * Note: provider methods are called in the Display thread of the viewer. |
| * To avoid blocking the UI, long running operations should be performed |
| * asynchronously. |
| * </p> |
| * |
| * @since 3.3 |
| */ |
| public interface IElementMementoProvider { |
| |
| /** |
| * Creates and stores a mementos for the elements specified in the requests. |
| * A request should be cancelled if a memento is not supported for the |
| * specified element or context. |
| * |
| * @param requests Specifies elements and provides memento stores. |
| * The requests array is guaranteed to have at least one element, and for |
| * all requests to have the same presentation context. |
| */ |
| void encodeElements(IElementMementoRequest[] requests); |
| |
| /** |
| * Determines whether mementos represent associated elements specified in the requests. |
| * |
| * @param requests Specifies each element and previously created memento. |
| * The requests array is guaranteed to have at least one element, and for |
| * all requests to have the same presentation context. |
| */ |
| void compareElements(IElementCompareRequest[] requests); |
| |
| } |