| /******************************************************************************* |
| * Copyright (c) 2000, 2010 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.draw2d; |
| |
| import java.util.Map; |
| |
| import org.eclipse.draw2d.geometry.Rectangle; |
| |
| /** |
| * An interface used to notify listeners that the listened to object is |
| * updating. |
| */ |
| public interface UpdateListener { |
| |
| /** |
| * Notifies the listener that the listened to object is painting. The damage |
| * rectangle may be null or empty. This indicates the dirty regions were |
| * clipped or not visible. But for objects such as the |
| * {@link org.eclipse.draw2d.parts.Thumbnail}, notification still needs to |
| * occur. The map of dirty regions is passed to allow the listener to |
| * determine if it needs to update, for instance when a particular figure is |
| * painting. |
| * |
| * @param damage |
| * The area being painted |
| * @param dirtyRegions |
| * a Map of figures to their dirty regions |
| */ |
| void notifyPainting(Rectangle damage, Map dirtyRegions); |
| |
| /** |
| * Notifies the listener that the listened to object is validating. |
| */ |
| void notifyValidating(); |
| |
| } |