--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/visualizer/Bytecodes/src/com/sun/hotspot/igv/bytecodes/BytecodeViewTopComponent.java	Tue Feb 07 22:41:09 2012 +0100
@@ -0,0 +1,195 @@
+/*
+ * 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.bytecodes;
+
+import com.sun.hotspot.igv.data.Group;
+import com.sun.hotspot.igv.data.InputGraph;
+import com.sun.hotspot.igv.data.services.InputGraphProvider;
+import java.awt.BorderLayout;
+import java.io.Serializable;
+import javax.swing.SwingUtilities;
+import org.openide.ErrorManager;
+import org.openide.explorer.ExplorerManager;
+import org.openide.explorer.ExplorerUtils;
+import org.openide.explorer.view.BeanTreeView;
+import org.openide.util.*;
+import org.openide.windows.TopComponent;
+import org.openide.windows.WindowManager;
+
+/**
+ * @author Thomas Wuerthinger
+ */
+final class BytecodeViewTopComponent extends TopComponent implements ExplorerManager.Provider, LookupListener {
+
+    private static BytecodeViewTopComponent instance;
+    private static final String PREFERRED_ID = "BytecodeViewTopComponent";
+    private ExplorerManager manager;
+    private BeanTreeView treeView;
+    private Lookup.Result result = null;
+    private MethodNode rootNode;
+
+    private BytecodeViewTopComponent() {
+        initComponents();
+        setName(NbBundle.getMessage(BytecodeViewTopComponent.class, "CTL_BytecodeViewTopComponent"));
+        setToolTipText(NbBundle.getMessage(BytecodeViewTopComponent.class, "HINT_BytecodeViewTopComponent"));
+
+        manager = new ExplorerManager();
+        rootNode = new MethodNode(null, null, "");
+        manager.setRootContext(rootNode);
+
+        setLayout(new BorderLayout());
+
+        treeView = new BeanTreeView();
+        treeView.setRootVisible(false);
+        this.add(BorderLayout.CENTER, treeView);
+        associateLookup(ExplorerUtils.createLookup(manager, getActionMap()));
+    }
+
+    /** This method is called from within the constructor to
+     * initialize the form.
+     * WARNING: Do NOT modify this code. The content of this method is
+     * always regenerated by the Form Editor.
+     */
+    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
+    private void initComponents() {
+
+        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(this);
+        this.setLayout(layout);
+        layout.setHorizontalGroup(
+            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
+            .add(0, 400, Short.MAX_VALUE)
+        );
+        layout.setVerticalGroup(
+            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
+            .add(0, 300, Short.MAX_VALUE)
+        );
+    }// </editor-fold>//GEN-END:initComponents
+    // Variables declaration - do not modify//GEN-BEGIN:variables
+    // End of variables declaration//GEN-END:variables
+
+    /**
+     * Gets default instance. Do not use directly: reserved for *.settings files only,
+     * i.e. deserialization routines; otherwise you could get a non-deserialized instance.
+     * To obtain the singleton instance, use {@link findInstance}.
+     */
+    public static synchronized BytecodeViewTopComponent getDefault() {
+        if (instance == null) {
+            instance = new BytecodeViewTopComponent();
+        }
+        return instance;
+    }
+
+    /**
+     * Obtain the BytecodeViewTopComponent instance. Never call {@link #getDefault} directly!
+     */
+    public static synchronized BytecodeViewTopComponent findInstance() {
+        TopComponent win = WindowManager.getDefault().findTopComponent(PREFERRED_ID);
+        if (win == null) {
+            ErrorManager.getDefault().log(ErrorManager.WARNING, "Cannot find BytecodeView component. It will not be located properly in the window system.");
+            return getDefault();
+        }
+        if (win instanceof BytecodeViewTopComponent) {
+            return (BytecodeViewTopComponent) win;
+        }
+        ErrorManager.getDefault().log(ErrorManager.WARNING, "There seem to be multiple components with the '" + PREFERRED_ID + "' ID. That is a potential source of errors and unexpected behavior.");
+        return getDefault();
+    }
+
+    @Override
+    public int getPersistenceType() {
+        return TopComponent.PERSISTENCE_ALWAYS;
+    }
+
+    @Override
+    public void componentOpened() {
+        Lookup.Template<InputGraphProvider> tpl = new Lookup.Template<>(InputGraphProvider.class);
+        result = Utilities.actionsGlobalContext().lookup(tpl);
+        result.addLookupListener(this);
+    }
+
+    @Override
+    public void componentClosed() {
+        result.removeLookupListener(this);
+        result = null;
+    }
+
+    @Override
+    public Object writeReplace() {
+        return new ResolvableHelper();
+    }
+
+    @Override
+    protected String preferredID() {
+        return PREFERRED_ID;
+    }
+
+    @Override
+    public ExplorerManager getExplorerManager() {
+        return manager;
+    }
+
+    @Override
+    public void requestActive() {
+        super.requestActive();
+        this.treeView.requestFocus();
+    }
+
+    @Override
+    public boolean requestFocus(boolean temporary) {
+        this.treeView.requestFocus();
+        return super.requestFocus(temporary);
+    }
+
+    @Override
+    protected boolean requestFocusInWindow(boolean temporary) {
+        this.treeView.requestFocus();
+        return super.requestFocusInWindow(temporary);
+    }
+
+    @Override
+    public void resultChanged(LookupEvent lookupEvent) {
+        final InputGraphProvider p = null; // TODO(tw): FIXME //.getLast(InputGraphProvider.class);//)Utilities.actionsGlobalContext().lookup(InputGraphProvider.class);
+        if (p != null) {
+            SwingUtilities.invokeLater(new Runnable() {
+                @Override
+                public void run() {
+                    InputGraph graph = p.getGraph();
+                    if (graph != null) {
+                        Group g = graph.getGroup();
+                        rootNode.update(graph, g.getMethod());
+                    }
+                }
+            });
+        }
+    }
+
+    final static class ResolvableHelper implements Serializable {
+
+        private static final long serialVersionUID = 1L;
+
+        public Object readResolve() {
+            return BytecodeViewTopComponent.getDefault();
+        }
+    }
+}