--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.eclipse.core.databinding/src/org/eclipse/core/databinding/observable/StaleEvent.d	Tue Apr 14 11:35:29 2009 +0200
@@ -0,0 +1,56 @@
+/*******************************************************************************
+ * Copyright (c) 2006, 2007 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
+ *******************************************************************************/
+
+module org.eclipse.core.databinding.observable.StaleEvent;
+
+import java.lang.all;
+
+/**
+ * Generic event denoting that the state of an {@link IObservable} object is
+ * about to change. Note that this event is only fired when an observable
+ * becomes stale, not when it becomes unstale; an observable that becomes
+ * unstale should always fire a change event. Staleness can be used (for
+ * example) to notify listeners when an observable has started a background
+ * thread for updating its state. Clients can safely ignore staleness.
+ * 
+ * @see IObservable#isStale()
+ * 
+ * @since 1.0
+ * 
+ */
+public class StaleEvent : ObservableEvent {
+
+    /**
+     * Creates a new stale event.
+     * 
+     * @param source
+     *            the source observable
+     */
+    public this(IObservable source) {
+        super(source);
+    }
+
+    /**
+     * 
+     */
+    private static final long serialVersionUID = 3491012225431471077L;
+
+    static final Object TYPE = new Object();
+
+    protected void dispatch(IObservablesListener listener) {
+        (cast(IStaleListener) listener).handleStale(this);
+    }
+
+    protected Object getListenerType() {
+        return TYPE;
+    }
+
+}