--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/visualizer/Data/src/com/sun/hotspot/igv/data/GraphDocument.java	Tue Feb 07 22:41:09 2012 +0100
@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+package com.sun.hotspot.igv.data;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ *
+ * @author Thomas Wuerthinger
+ */
+public class GraphDocument extends Properties.Entity implements ChangedEventProvider<GraphDocument>, Folder {
+
+    private List<FolderElement> elements;
+    private ChangedEvent<GraphDocument> changedEvent;
+
+    public GraphDocument() {
+        elements = new ArrayList<>();
+        changedEvent = new ChangedEvent<>(this);
+    }
+
+    public void clear() {
+        elements.clear();
+        getChangedEvent().fire();
+    }
+
+    @Override
+    public ChangedEvent<GraphDocument> getChangedEvent() {
+        return changedEvent;
+    }
+
+    public void addGraphDocument(GraphDocument document) {
+        for (FolderElement e : document.elements) {
+            e.setParent(this);
+            this.addElement(e);
+        }
+        document.clear();
+        getChangedEvent().fire();
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+
+        sb.append("GraphDocument: ").append(getProperties().toString()).append(" \n\n");
+        for (FolderElement g : getElements()) {
+            sb.append(g.toString());
+            sb.append("\n\n");
+        }
+
+        return sb.toString();
+    }
+
+    @Override
+    public List<? extends FolderElement> getElements() {
+        return elements;
+    }
+
+    @Override
+    public void removeElement(FolderElement element) {
+        if (elements.remove(element)) {
+            getChangedEvent().fire();
+        }
+    }
+
+    @Override
+    public void addElement(FolderElement element) {
+        elements.add(element);
+        element.setParent(this);
+        getChangedEvent().fire();
+    }
+
+    @Override
+    public String getName() {
+        return "root";
+    }
+}