--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.eclipse.core.commands/src/org/eclipse/core/commands/IStateListener.d	Sat Mar 14 18:23:29 2009 +0100
@@ -0,0 +1,40 @@
+/*******************************************************************************
+ * Copyright (c) 2005, 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
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+
+module org.eclipse.core.commands.IStateListener;
+
+import org.eclipse.core.commands.State;
+
+/**
+ * <p>
+ * A listener to changes in some state.
+ * </p>
+ * <p>
+ * Clients may implement, but must not extend this interface.
+ * </p>
+ *
+ * @since 3.2
+ */
+public interface IStateListener {
+
+    /**
+     * Handles a change to the value in some state.
+     *
+     * @param state
+     *            The state that has changed; never <code>null</code>. The
+     *            value for this state has been updated to the new value.
+     * @param oldValue
+     *            The old value; may be anything.
+     */
+    public void handleStateChange(State state, Object oldValue);
+}