### Eclipse Workspace Patch 1.0
#P org.eclipse.draw2d
Index: src/org/eclipse/draw2d/DeferredUpdateManager.java
===================================================================
RCS file: /cvsroot/tools/org.eclipse.draw2d/src/org/eclipse/draw2d/DeferredUpdateManager.java,v
retrieving revision 1.22
diff -u -r1.22 DeferredUpdateManager.java
--- src/org/eclipse/draw2d/DeferredUpdateManager.java	5 Apr 2006 14:21:13 -0000	1.22
+++ src/org/eclipse/draw2d/DeferredUpdateManager.java	3 Dec 2006 23:58:52 -0000
@@ -57,6 +57,8 @@
 private boolean updating;
 private RunnableChain afterUpdate;
 
+private int concurrentValidationsNumber = 0;
+
 private static class RunnableChain {
 	RunnableChain next;
 	Runnable run;
@@ -147,6 +149,7 @@
 		map.put(root, rect);
 		firePainting(rect, map);
 	}
+	performValidation();
 	root.paint(graphics);
 	graphics.dispose();
 }
@@ -184,15 +187,16 @@
 	if (invalidFigures.isEmpty())
 		return;
 	try {
+		concurrentValidationsNumber++;
 		IFigure fig;
 		fireValidating();
 		for (int i = 0; i < invalidFigures.size(); i++) {
 			fig = (IFigure) invalidFigures.get(i);
-			invalidFigures.set(i, null);
 			fig.validate();
 		}
 	} finally {
-		invalidFigures.clear();
+		if (--concurrentValidationsNumber == 0)
+			invalidFigures.clear();
 	}
 }