--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/jdk.jconsole/share/classes/sun/tools/jconsole/OverviewTab.java	Sun Aug 17 15:54:13 2014 +0100
@@ -0,0 +1,152 @@
+/*
+ * Copyright (c) 2006, 2012, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 sun.tools.jconsole;
+
+import java.awt.*;
+import java.util.ArrayList;
+
+import javax.swing.*;
+import javax.swing.border.*;
+
+
+@SuppressWarnings("serial")
+class OverviewTab extends Tab {
+    JPanel gridPanel;
+    TimeComboBox timeComboBox;
+
+    public static String getTabName() {
+        return Messages.OVERVIEW;
+    }
+
+    public OverviewTab(VMPanel vmPanel) {
+        super(vmPanel, getTabName());
+
+        setBorder(new EmptyBorder(4, 4, 3, 4));
+        setLayout(new BorderLayout());
+
+        JPanel topPanel     = new JPanel(new BorderLayout());
+        add(topPanel, BorderLayout.NORTH);
+
+        JPanel controlPanel = new JPanel(new FlowLayout(FlowLayout.CENTER, 20, 5));
+        topPanel.add(controlPanel, BorderLayout.CENTER);
+
+        timeComboBox = new TimeComboBox();
+        LabeledComponent lc = new LabeledComponent(Messages.TIME_RANGE_COLON,
+                                                   Resources.getMnemonicInt(Messages.TIME_RANGE_COLON),
+                                                   timeComboBox);
+        controlPanel.add(lc);
+
+        gridPanel = new JPanel(new AutoGridLayout(10, 6));
+        gridPanel.setBorder(null);
+        JScrollPane sp = new JScrollPane(gridPanel);
+        sp.setBorder(null);
+        sp.setViewportBorder(null);
+        add(sp, BorderLayout.CENTER);
+
+        // Note that panels are added on first update
+    }
+
+
+    public SwingWorker<?, ?> newSwingWorker() {
+        return new SwingWorker<Object, Object>() {
+            public Object doInBackground() {
+                return null;
+            }
+
+            protected void done() {
+                if (gridPanel.getComponentCount() == 0) {
+                    final ArrayList<Plotter> plotters = new ArrayList<Plotter>();
+                    for (Tab tab : vmPanel.getTabs()) {
+                        OverviewPanel[] ops = tab.getOverviewPanels();
+                        if (ops != null) {
+                            for (OverviewPanel op : ops) {
+                                gridPanel.add(op);
+                                Plotter plotter = op.getPlotter();
+                                if (plotter != null) {
+                                    plotters.add(plotter);
+                                    timeComboBox.addPlotter(plotter);
+                                }
+                            }
+                        }
+                    }
+                    if (plotters.size() > 0) {
+                        workerAdd(new Runnable() {
+                            public void run() {
+                                ProxyClient proxyClient = vmPanel.getProxyClient();
+                                for (Plotter plotter : plotters) {
+                                    proxyClient.addWeakPropertyChangeListener(plotter);
+                                }
+                            }
+                        });
+                    }
+                    if (getParent() instanceof JTabbedPane) {
+                        Utilities.updateTransparency((JTabbedPane)getParent());
+                    }
+                }
+            }
+        };
+    }
+
+
+
+    private class AutoGridLayout extends GridLayout {
+        public AutoGridLayout(int hGap, int vGap) {
+            super(0, 1, hGap, vGap);
+        }
+
+        public Dimension preferredLayoutSize(Container parent) {
+            return minimumLayoutSize(parent);
+        }
+
+        public Dimension minimumLayoutSize(Container parent) {
+            updateColumns(parent);
+            return super.minimumLayoutSize(parent);
+        }
+
+        private void updateColumns(Container parent) {
+            // Use the outer panel width, not the scrolling gridPanel
+            int parentWidth = OverviewTab.this.getWidth();
+
+            int columnWidth = 1;
+
+            for (Component c : parent.getComponents()) {
+                columnWidth = Math.max(columnWidth, c.getPreferredSize().width);
+            }
+
+            int n = parent.getComponentCount();
+            int maxCols = Math.min(n, parentWidth / columnWidth);
+
+            for (int columns = maxCols; columns >= 1; columns--) {
+                if (columns == 1) {
+                    setColumns(maxCols);
+                } else if ((n % columns) == 0) {
+                    setColumns(columns);
+                    break;
+                }
+            }
+        }
+    }
+}