--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/tools/IdealGraphVisualizer/ControlFlow/src/com/sun/hotspot/igv/controlflow/ControlFlowTopComponent.java	Tue Jun 24 16:00:14 2008 -0700
@@ -0,0 +1,179 @@
+/*
+ * Copyright 2008 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+package com.sun.hotspot.igv.controlflow;
+
+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.JScrollPane;
+import org.openide.ErrorManager;
+import org.openide.util.Lookup;
+import org.openide.util.LookupEvent;
+import org.openide.util.LookupListener;
+import org.openide.util.NbBundle;
+import org.openide.util.Utilities;
+import org.openide.windows.TopComponent;
+import org.openide.windows.WindowManager;
+
+/**
+ *
+ * @author Thomas Wuerthinger
+ */
+final class ControlFlowTopComponent extends TopComponent implements LookupListener {
+
+    private static ControlFlowTopComponent instance;
+    private Lookup.Result result = null;
+    private static final String PREFERRED_ID = "ControlFlowTopComponent";
+    private ControlFlowScene scene;
+
+    private ControlFlowTopComponent() {
+        initComponents();
+        setName(NbBundle.getMessage(ControlFlowTopComponent.class, "CTL_ControlFlowTopComponent"));
+        setToolTipText(NbBundle.getMessage(ControlFlowTopComponent.class, "HINT_ControlFlowTopComponent"));
+
+        scene = new ControlFlowScene();
+        this.setLayout(new BorderLayout());
+        this.associateLookup(scene.getLookup());
+
+
+        JScrollPane panel = new JScrollPane(scene.createView());
+        this.add(panel, BorderLayout.CENTER);
+    }
+
+    @Override
+    public void requestFocus() {
+        super.requestFocus();
+        scene.getView().requestFocus();
+    }
+
+    @Override
+    public boolean requestFocusInWindow() {
+        super.requestFocusInWindow();
+        return scene.getView().requestFocusInWindow();
+    }
+
+    /** 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 ControlFlowTopComponent getDefault() {
+        if (instance == null) {
+            instance = new ControlFlowTopComponent();
+        }
+        return instance;
+    }
+
+    /**
+     * Obtain the ControlFlowTopComponent instance. Never call {@link #getDefault} directly!
+     */
+    public static synchronized ControlFlowTopComponent findInstance() {
+        TopComponent win = WindowManager.getDefault().findTopComponent(PREFERRED_ID);
+        if (win == null) {
+            ErrorManager.getDefault().log(ErrorManager.WARNING, "Cannot find ControlFlow component. It will not be located properly in the window system.");
+            return getDefault();
+        }
+        if (win instanceof ControlFlowTopComponent) {
+            return (ControlFlowTopComponent) 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 tpl = new Lookup.Template(Object.class);
+        result = Utilities.actionsGlobalContext().lookup(tpl);
+        result.addLookupListener(this);
+    }
+
+    @Override
+    public void componentClosed() {
+        result.removeLookupListener(this);
+        result = null;
+    }
+
+    public void resultChanged(LookupEvent lookupEvent) {
+
+        InputGraphProvider p = Lookup.getDefault().lookup(InputGraphProvider.class);
+        if (p != null) {
+            InputGraph g = p.getGraph();
+            if (g != null) {
+                scene.setGraph(g);
+            }
+        }
+    }
+
+    @Override
+    public Object writeReplace() {
+        return new ResolvableHelper();
+    }
+
+    @Override
+    protected String preferredID() {
+        return PREFERRED_ID;
+    }
+
+    @Override
+    public void requestActive() {
+        scene.getView().requestFocusInWindow();
+        super.requestActive();
+    }
+
+    final static class ResolvableHelper implements Serializable {
+
+        private static final long serialVersionUID = 1L;
+
+        public Object readResolve() {
+            return ControlFlowTopComponent.getDefault();
+        }
+    }
+}