/*

 * Copyright (c) 2004, 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.awt.event.*;

import java.io.*;

import java.lang.management.*;

import java.lang.reflect.*;

import javax.swing.*;

import javax.swing.border.*;

import java.util.concurrent.*;

import static sun.tools.jconsole.Formatter.*;

import static sun.tools.jconsole.Utilities.*;

@SuppressWarnings("serial")

class ClassTab extends Tab implements ActionListener {

    PlotterPanel loadedClassesMeter;

    TimeComboBox timeComboBox;

    private JCheckBox verboseCheckBox;

    private HTMLPane details;

    private ClassOverviewPanel overviewPanel;

    private boolean plotterListening = false;

    private static final String loadedPlotterKey        = "loaded";

    private static final String totalLoadedPlotterKey   = "totalLoaded";

    private static final Color  loadedPlotterColor      = Plotter.defaultColor;

    private static final Color  totalLoadedPlotterColor = Color.red;

    /*

      Hierarchy of panels and layouts for this tab:

        ClassTab (BorderLayout)

            North:  topPanel (BorderLayout)

                        Center: controlPanel (FlowLayout)

                                    timeComboBox

                        East:   topRightPanel (FlowLayout)

                                    verboseCheckBox

            Center: plotterPanel (BorderLayout)

                        Center: plotter

            South:  bottomPanel (BorderLayout)

                        Center: details

    */

    public static String getTabName() {

        return Messages.CLASSES;

    }

    public ClassTab(VMPanel vmPanel) {

        super(vmPanel, getTabName());

        setLayout(new BorderLayout(0, 0));

        setBorder(new EmptyBorder(4, 4, 3, 4));

        JPanel topPanel     = new JPanel(new BorderLayout());

        JPanel plotterPanel = new JPanel(new BorderLayout());

        JPanel bottomPanel  = new JPanel(new BorderLayout());

        add(topPanel,     BorderLayout.NORTH);

        add(plotterPanel, BorderLayout.CENTER);

        add(bottomPanel,  BorderLayout.SOUTH);

        JPanel controlPanel = new JPanel(new FlowLayout(FlowLayout.CENTER, 20, 5));

        topPanel.add(controlPanel, BorderLayout.CENTER);

        verboseCheckBox = new JCheckBox(Messages.VERBOSE_OUTPUT);

        verboseCheckBox.addActionListener(this);

        verboseCheckBox.setToolTipText(Messages.VERBOSE_OUTPUT_TOOLTIP);

        JPanel topRightPanel = new JPanel();

        topRightPanel.setBorder(new EmptyBorder(0, 65-8, 0, 70));

        topRightPanel.add(verboseCheckBox);

        topPanel.add(topRightPanel, BorderLayout.AFTER_LINE_ENDS);

        loadedClassesMeter = new PlotterPanel(Messages.NUMBER_OF_LOADED_CLASSES,

                                              Plotter.Unit.NONE, false);

        loadedClassesMeter.plotter.createSequence(loadedPlotterKey,

                                                  Messages.LOADED,

                                                  loadedPlotterColor,

                                                  true);

        loadedClassesMeter.plotter.createSequence(totalLoadedPlotterKey,

                                                  Messages.TOTAL_LOADED,

                                                  totalLoadedPlotterColor,

                                                  true);

        setAccessibleName(loadedClassesMeter.plotter,

                          Messages.CLASS_TAB_LOADED_CLASSES_PLOTTER_ACCESSIBLE_NAME);

        plotterPanel.add(loadedClassesMeter);

        timeComboBox = new TimeComboBox(loadedClassesMeter.plotter);

        controlPanel.add(new LabeledComponent(Messages.TIME_RANGE_COLON,

                                              Resources.getMnemonicInt(Messages.TIME_RANGE_COLON),

                                              timeComboBox));

        LabeledComponent.layout(plotterPanel);

        bottomPanel.setBorder(new CompoundBorder(new TitledBorder(Messages.DETAILS),

                                                 new EmptyBorder(10, 10, 10, 10)));

        details = new HTMLPane();

        setAccessibleName(details, Messages.DETAILS);

        JScrollPane scrollPane = new JScrollPane(details);

        scrollPane.setPreferredSize(new Dimension(0, 150));

        bottomPanel.add(scrollPane, BorderLayout.SOUTH);

    }

    public void actionPerformed(ActionEvent ev) {

        final boolean b = verboseCheckBox.isSelected();

        workerAdd(new Runnable() {

            public void run() {

                ProxyClient proxyClient = vmPanel.getProxyClient();

                try {

                    proxyClient.getClassLoadingMXBean().setVerbose(b);

                } catch (UndeclaredThrowableException e) {

                    proxyClient.markAsDead();

                } catch (IOException ex) {

                    // Ignore

                }

            }

        });

    }

    public SwingWorker<?, ?> newSwingWorker() {

        final ProxyClient proxyClient = vmPanel.getProxyClient();

        if (!plotterListening) {

            proxyClient.addWeakPropertyChangeListener(loadedClassesMeter.plotter);

            plotterListening = true;

        }

        return new SwingWorker<Boolean, Object>() {

            private long clCount, cuCount, ctCount;

            private boolean isVerbose;

            private String detailsStr;

            private long timeStamp;

            public Boolean doInBackground() {

                try {

                    ClassLoadingMXBean classLoadingMBean = proxyClient.getClassLoadingMXBean();

                    clCount = classLoadingMBean.getLoadedClassCount();

                    cuCount = classLoadingMBean.getUnloadedClassCount();

                    ctCount = classLoadingMBean.getTotalLoadedClassCount();

                    isVerbose = classLoadingMBean.isVerbose();

                    detailsStr = formatDetails();

                    timeStamp = System.currentTimeMillis();

                    return true;

                } catch (UndeclaredThrowableException e) {

                    proxyClient.markAsDead();

                    return false;

                } catch (IOException e) {

                    return false;

                }

            }

            protected void done() {

                try {

                    if (get()) {

                        loadedClassesMeter.plotter.addValues(timeStamp, clCount, ctCount);

                        if (overviewPanel != null) {

                            overviewPanel.updateClassInfo(ctCount, clCount);

                            overviewPanel.getPlotter().addValues(timeStamp, clCount);

                        }

                        loadedClassesMeter.setValueLabel(clCount + "");

                        verboseCheckBox.setSelected(isVerbose);

                        details.setText(detailsStr);

                    }

                } catch (InterruptedException ex) {

                } catch (ExecutionException ex) {

                    if (JConsole.isDebug()) {

                        ex.printStackTrace();

                    }

                }

            }

            private String formatDetails() {

                String text = "<table cellspacing=0 cellpadding=0>";

                long time = System.currentTimeMillis();

                String timeStamp = formatDateTime(time);

                text += newRow(Messages.TIME, timeStamp);

                text += newRow(Messages.CURRENT_CLASSES_LOADED, justify(clCount, 5));

                text += newRow(Messages.TOTAL_CLASSES_LOADED,   justify(ctCount, 5));

                text += newRow(Messages.TOTAL_CLASSES_UNLOADED, justify(cuCount, 5));

                return text;

            }

        };

    }

    OverviewPanel[] getOverviewPanels() {

        if (overviewPanel == null) {

            overviewPanel = new ClassOverviewPanel();

        }

        return new OverviewPanel[] { overviewPanel };

    }

    private static class ClassOverviewPanel extends OverviewPanel {

        ClassOverviewPanel() {

            super(Messages.CLASSES, loadedPlotterKey, Messages.LOADED, null);

        }

        private void updateClassInfo(long total, long loaded) {

            long unloaded = (total - loaded);

            getInfoLabel().setText(Resources.format(Messages.CLASS_TAB_INFO_LABEL_FORMAT,

                                   loaded, unloaded, total));

        }

    }

}