### Eclipse Workspace Patch 1.0
#P org.eclipse.gmf.runtime.diagram.ui
Index: src/org/eclipse/gmf/runtime/diagram/ui/commands/DeferredCreateConnectionViewAndElementCommand.java
===================================================================
RCS file: /cvsroot/technology/org.eclipse.gmf/plugins/org.eclipse.gmf.runtime.diagram.ui/src/org/eclipse/gmf/runtime/diagram/ui/commands/DeferredCreateConnectionViewAndElementCommand.java,v
retrieving revision 1.5
diff -u -r1.5 DeferredCreateConnectionViewAndElementCommand.java
--- src/org/eclipse/gmf/runtime/diagram/ui/commands/DeferredCreateConnectionViewAndElementCommand.java	28 Feb 2006 02:30:51 -0000	1.5
+++ src/org/eclipse/gmf/runtime/diagram/ui/commands/DeferredCreateConnectionViewAndElementCommand.java	22 Aug 2006 20:31:55 -0000
@@ -161,7 +161,7 @@
 	}
 
 	public boolean canRedo() {
-		return command != null && command.canExecute();
+		return CommandUtilities.canRedo(command);
 	}
 
 	/**
Index: src/org/eclipse/gmf/runtime/diagram/ui/commands/CommandUtilities.java
===================================================================
RCS file: src/org/eclipse/gmf/runtime/diagram/ui/commands/CommandUtilities.java
diff -N src/org/eclipse/gmf/runtime/diagram/ui/commands/CommandUtilities.java
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ src/org/eclipse/gmf/runtime/diagram/ui/commands/CommandUtilities.java	1 Jan 1970 00:00:00 -0000
@@ -0,0 +1,70 @@
+/******************************************************************************
+ * Copyright (c) 2006, 2006 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.gmf.runtime.diagram.ui.commands;
+
+import java.util.Iterator;
+
+import org.eclipse.core.commands.operations.IUndoableOperation;
+import org.eclipse.gef.commands.Command;
+import org.eclipse.gef.commands.CompoundCommand;
+
+/**
+ * Class containing commands utility methods.
+ * 
+ * @author aboyko
+ *
+ */
+public class CommandUtilities {
+	
+	/**
+	 * This utility function determines whether the command is redoable.
+	 * Since GEF commands API doesn't support for canRedo method, this
+	 * utility will help to travel through the contents of GEF wrapper
+	 * commands and determine redoability of the GEF command based on
+	 * the redoability of the commands it contains.
+	 * 
+	 * @param command The command to be examined
+	 * @return <code>true</code> if the passed command is redoable
+	 */
+	public static boolean canRedo(Command command)
+	{
+		if (command == null)
+			return false;
+		
+		if (command instanceof IUndoableOperation)
+		{
+			return ((IUndoableOperation) command).canRedo();
+		}
+		else if (command instanceof CompoundCommand)
+		{
+			for ( Iterator iter = ((CompoundCommand)command).getCommands().iterator(); iter.hasNext(); )
+			{
+				try
+				{
+					if (!canRedo((Command)iter.next()))
+						return false;
+				}
+				catch (ClassCastException e)
+				{
+					return false;
+				}
+			}
+			return true;
+		}
+		else if (command instanceof ICommandProxy)
+		{
+			return ((ICommandProxy)command).getICommand().canRedo();
+		}
+		return command.canExecute();
+	}
+
+}