--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/core/commands/IHandlerListener.d	Wed Mar 26 00:57:19 2008 +0100
@@ -0,0 +1,39 @@
+/*******************************************************************************
+ * Copyright (c) 2004, 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.core.commands.IHandlerListener;
+
+import dwtx.core.commands.HandlerEvent;
+
+/**
+ * An instance of this interface can be used by clients to receive notification
+ * of changes to one or more instances of <code>IHandler</code>.
+ * <p>
+ * This interface may be implemented by clients.
+ * </p>
+ *
+ * @since 3.1
+ * @see IHandler#addHandlerListener(IHandlerListener)
+ * @see IHandler#removeHandlerListener(IHandlerListener)
+ */
+public interface IHandlerListener {
+
+    /**
+     * Notifies that one or more properties of an instance of
+     * <code>IHandler</code> have changed. Specific details are described in
+     * the <code>HandlerEvent</code>.
+     *
+     * @param handlerEvent
+     *            the handler event. Guaranteed not to be <code>null</code>.
+     */
+    void handlerChanged(HandlerEvent handlerEvent);
+}