--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/draw2d/UpdateListener.d	Sun Aug 03 00:52:14 2008 +0200
@@ -0,0 +1,42 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2005 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
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module dwtx.draw2d.UpdateListener;
+
+import dwt.dwthelper.utils;
+import dwtx.dwtxhelper.Collection;
+
+import dwtx.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 dwtx.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();
+
+}