--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/draw2d/TreeSearch.d	Sun Aug 03 00:52:14 2008 +0200
@@ -0,0 +1,40 @@
+/*******************************************************************************
+ * 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.TreeSearch;
+
+import dwt.dwthelper.utils;
+import dwtx.draw2d.IFigure;
+
+/**
+ * A helper used in depth-first searches of a figure subgraph.
+ * @author hudsonr
+ * @since 2.1
+ */
+public interface TreeSearch {
+
+/**
+ * Returns <code>true</code> if the given figure is accepted by the search.
+ * @param figure the current figure in the traversal
+ * @return  <code>true</code> if the figure is accepted
+ */
+bool accept(IFigure figure);
+
+/**
+ * Returns <code>true</code> if the figure and all of its contained figures should be
+ * pruned from the search.
+ * @param figure the current figure in the traversal
+ * @return  <code>true</code> if the subgraph should be pruned
+ */
+bool prune(IFigure figure);
+
+}