--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.eclipse.core.databinding/src/org/eclipse/core/databinding/observable/set/IObservableSet.d	Tue Apr 14 11:35:29 2009 +0200
@@ -0,0 +1,131 @@
+/*******************************************************************************
+ * Copyright (c) 2006, 2008 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.set.IObservableSet;
+
+import java.lang.all;
+
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.Set;
+
+import org.eclipse.core.databinding.observable.IObservableCollection;
+
+/**
+ * A set whose changes can be tracked by set change listeners.
+ * 
+ * @noextend This interface is not intended to be extended by clients.
+ * @noimplement This interface is not intended to be implemented by clients.
+ *              Clients should instead subclass one of the classes that
+ *              implement this interface. Note that direct implementers of this
+ *              interface outside of the framework will be broken in future
+ *              releases when methods are added to this interface.
+ * 
+ * @see AbstractObservableSet
+ * @see ObservableSet
+ * 
+ * @since 1.0
+ * 
+ */
+public interface IObservableSet : Set, IObservableCollection {
+
+    /**
+     * @param listener
+     */
+    public void addSetChangeListener(ISetChangeListener listener);
+
+    /**
+     * @param listener
+     */
+    public void removeSetChangeListener(ISetChangeListener listener);
+
+    /**
+     * @return the element type or <code>null</code> if untyped
+     */
+    public Object getElementType();
+
+    /**
+     * @TrackedGetter
+     */
+    int size();
+
+    /**
+     * @TrackedGetter
+     */
+    bool isEmpty();
+
+    /**
+     * @TrackedGetter
+     */
+    bool contains(Object o);
+
+    /**
+     * @TrackedGetter
+     */
+    Iterator iterator();
+
+    /**
+     * @TrackedGetter
+     */
+    Object[] toArray();
+
+    /**
+     * @TrackedGetter
+     */
+    Object[] toArray(Object a[]);
+
+    // Modification Operations
+
+    /**
+     * @TrackedGetter
+     */
+    bool add(Object o);
+
+    /**
+     * @TrackedGetter
+     */
+    bool remove(Object o);
+
+    // Bulk Operations
+
+    /**
+     * @TrackedGetter
+     */
+    bool containsAll(Collection c);
+
+    /**
+     * @TrackedGetter
+     */
+    bool addAll(Collection c);
+
+    /**
+     * @TrackedGetter
+     */
+    bool retainAll(Collection c);
+
+    /**
+     * @TrackedGetter
+     */
+    bool removeAll(Collection c);
+
+    // Comparison and hashing
+
+    /**
+     * @TrackedGetter
+     */
+    bool opEquals(Object o);
+
+    /**
+     * @TrackedGetter
+     */
+    int hashCode();
+
+}