--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/viewers/deferred/SetModel.d	Mon Mar 31 00:47:19 2008 +0200
@@ -0,0 +1,138 @@
+/*******************************************************************************
+ * Copyright (c) 2004, 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 dwtx.jface.viewers.deferred.SetModel;
+
+import dwtx.jface.viewers.deferred.AbstractConcurrentModel;
+import dwtx.jface.viewers.deferred.IConcurrentModelListener;
+
+import tango.util.collection.HashSet;
+import tango.util.collection.model.View;
+
+import dwtx.core.runtime.Assert;
+
+import dwt.dwthelper.utils;
+
+/**
+ * Trivial implementation of an <code>IConcurrentModel</code>. Implements
+ * an unordered set of elements that fires off change notifications whenever
+ * elements are added or removed from the set. All notifications are sent
+ * synchronously.
+ *
+ * @since 3.1
+ */
+public class SetModel : AbstractConcurrentModel {
+
+    private HashSet!(Object) data;
+
+    public this(){
+        data = new HashSet!(Object);
+    }
+
+    /**
+     * Return the contents of the model.
+     * @return the array of elements
+     *
+     */
+    public Object[] getElements() {
+        return data.toArray();
+    }
+
+    /**
+     * Sets the contents to the given array of elements
+     *
+     * @param newContents new contents of this set
+     */
+    public void set(Object[] newContents) {
+//         Assert.isNotNull(newContents);
+        data.clear();
+        for (int i = 0; i < newContents.length; i++) {
+            Object object = newContents[i];
+
+            data.add(object);
+        }
+
+        IConcurrentModelListener[] listeners = getListeners();
+        foreach( listener; listeners ){
+            listener.setContents(newContents);
+        }
+    }
+
+    /**
+     * Empties the set
+     */
+    public void clear() {
+        Object[] removed = data.toArray();
+        data.clear();
+        fireRemove(removed);
+    }
+
+    /**
+     * Adds the given elements to the set
+     *
+     * @param toAdd elements to add
+     */
+    public void addAll(Object[] toAdd) {
+//         Assert.isNotNull(toAdd);
+        for (int i = 0; i < toAdd.length; i++) {
+            Object object = toAdd[i];
+
+            data.add(object);
+        }
+
+        fireAdd(toAdd);
+    }
+
+    /**
+     * Adds the given elements to the set. Duplicate elements are ignored.
+     *
+     * @param toAdd elements to add
+     */
+    public void addAll(View!(Object) toAdd) {
+        Assert.isNotNull(cast(Object)toAdd);
+        addAll(toAdd.toArray());
+    }
+
+    /**
+     * Fires a change notification for all elements in the given array
+     *
+     * @param changed array of elements that have changed
+     */
+    public void changeAll(Object[] changed) {
+//         Assert.isNotNull(changed);
+        fireUpdate(changed);
+    }
+
+    /**
+     * Removes all of the given elements from the set.
+     *
+     * @param toRemove elements to remove
+     */
+    public void removeAll(Object[] toRemove) {
+//         Assert.isNotNull(toRemove);
+        for (int i = 0; i < toRemove.length; i++) {
+            Object object = toRemove[i];
+
+            data.remove(object);
+        }
+
+        fireRemove(toRemove);
+    }
+
+    /* (non-Javadoc)
+     * @see dwtx.jface.viewers.deferred.IConcurrentModel#requestUpdate(dwtx.jface.viewers.deferred.IConcurrentModelListener)
+     */
+    public void requestUpdate(IConcurrentModelListener listener) {
+        Assert.isNotNull(cast(Object)listener);
+        listener.setContents(getElements());
+    }
+}