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	/*
	* 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));
	}
	}
	}

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