jdk/src/share/classes/sun/tools/jconsole/OverviewTab.java
author alanb
Fri, 02 Nov 2012 15:50:11 +0000
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permissions -rw-r--r--
7197491: update copyright year to match last edit in jdk8 jdk repository Reviewed-by: chegar, ksrini
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/*
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 * Copyright (c) 2006, 2012, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Oracle designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Oracle in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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package sun.tools.jconsole;
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import java.awt.*;
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import java.util.ArrayList;
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import javax.swing.*;
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import javax.swing.border.*;
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@SuppressWarnings("serial")
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class OverviewTab extends Tab {
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    JPanel gridPanel;
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    TimeComboBox timeComboBox;
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    public static String getTabName() {
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        return Messages.OVERVIEW;
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    }
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    public OverviewTab(VMPanel vmPanel) {
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        super(vmPanel, getTabName());
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        setBorder(new EmptyBorder(4, 4, 3, 4));
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        setLayout(new BorderLayout());
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        JPanel topPanel     = new JPanel(new BorderLayout());
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        add(topPanel, BorderLayout.NORTH);
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        JPanel controlPanel = new JPanel(new FlowLayout(FlowLayout.CENTER, 20, 5));
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        topPanel.add(controlPanel, BorderLayout.CENTER);
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        timeComboBox = new TimeComboBox();
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        LabeledComponent lc = new LabeledComponent(Messages.TIME_RANGE_COLON,
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                                                   Resources.getMnemonicInt(Messages.TIME_RANGE_COLON),
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                                                   timeComboBox);
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        controlPanel.add(lc);
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        gridPanel = new JPanel(new AutoGridLayout(10, 6));
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        gridPanel.setBorder(null);
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        JScrollPane sp = new JScrollPane(gridPanel);
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        sp.setBorder(null);
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        sp.setViewportBorder(null);
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        add(sp, BorderLayout.CENTER);
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        // Note that panels are added on first update
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    }
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    public SwingWorker<?, ?> newSwingWorker() {
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        return new SwingWorker<Object, Object>() {
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            public Object doInBackground() {
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                return null;
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            }
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            protected void done() {
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                if (gridPanel.getComponentCount() == 0) {
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                    final ArrayList<Plotter> plotters = new ArrayList<Plotter>();
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                    for (Tab tab : vmPanel.getTabs()) {
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                        OverviewPanel[] ops = tab.getOverviewPanels();
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                        if (ops != null) {
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                            for (OverviewPanel op : ops) {
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                                gridPanel.add(op);
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                                Plotter plotter = op.getPlotter();
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                                if (plotter != null) {
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                                    plotters.add(plotter);
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                                    timeComboBox.addPlotter(plotter);
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                                }
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                            }
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                        }
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                    }
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                    if (plotters.size() > 0) {
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                        workerAdd(new Runnable() {
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                            public void run() {
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                                ProxyClient proxyClient = vmPanel.getProxyClient();
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                                for (Plotter plotter : plotters) {
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                                    proxyClient.addWeakPropertyChangeListener(plotter);
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                                }
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                            }
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                        });
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                    }
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                    if (getParent() instanceof JTabbedPane) {
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                        Utilities.updateTransparency((JTabbedPane)getParent());
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                    }
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                }
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            }
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        };
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    }
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    private class AutoGridLayout extends GridLayout {
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        public AutoGridLayout(int hGap, int vGap) {
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            super(0, 1, hGap, vGap);
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        }
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        public Dimension preferredLayoutSize(Container parent) {
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            return minimumLayoutSize(parent);
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        }
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        public Dimension minimumLayoutSize(Container parent) {
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            updateColumns(parent);
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            return super.minimumLayoutSize(parent);
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        }
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        private void updateColumns(Container parent) {
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            // Use the outer panel width, not the scrolling gridPanel
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            int parentWidth = OverviewTab.this.getWidth();
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            int columnWidth = 1;
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            for (Component c : parent.getComponents()) {
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                columnWidth = Math.max(columnWidth, c.getPreferredSize().width);
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            }
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            int n = parent.getComponentCount();
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            int maxCols = Math.min(n, parentWidth / columnWidth);
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            for (int columns = maxCols; columns >= 1; columns--) {
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                if (columns == 1) {
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                    setColumns(maxCols);
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                } else if ((n % columns) == 0) {
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                    setColumns(columns);
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                    break;
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                }
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            }
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        }
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    }
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}