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	/*
	* Copyright (c) 2006, 2013, 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.beans.PropertyVetoException;
	import java.net.URI;

	import javax.swing.*;
	import javax.swing.border.*;
	import javax.swing.event.*;

	import static sun.misc.Version.jdkMinorVersion;

	import static java.awt.BorderLayout.*;
	import static sun.tools.jconsole.Utilities.*;

	@SuppressWarnings("serial")
	public class AboutDialog extends InternalDialog {

	private static final Color textColor = new Color(87, 88, 89);
	private static final Color bgColor = new Color(232, 237, 241);
	private static final Color borderColor = Color.black;

	private Icon mastheadIcon =
	new MastheadIcon(Messages.HELP_ABOUT_DIALOG_MASTHEAD_TITLE);

	private static AboutDialog aboutDialog;

	private JLabel statusBar;
	private Action closeAction;

	public AboutDialog(JConsole jConsole) {
	super(jConsole, Messages.HELP_ABOUT_DIALOG_TITLE, false);

	setAccessibleDescription(this, Messages.HELP_ABOUT_DIALOG_ACCESSIBLE_DESCRIPTION);
	setDefaultCloseOperation(HIDE_ON_CLOSE);
	setResizable(false);
	JComponent cp = (JComponent)getContentPane();

	createActions();

	JLabel mastheadLabel = new JLabel(mastheadIcon);
	setAccessibleName(mastheadLabel,
	Messages.HELP_ABOUT_DIALOG_MASTHEAD_ACCESSIBLE_NAME);

	JPanel mainPanel = new TPanel(0, 0);
	mainPanel.add(mastheadLabel, NORTH);

	String jConsoleVersion = Version.getVersion();
	String vmName = System.getProperty("java.vm.name");
	String vmVersion = System.getProperty("java.vm.version");
	String urlStr = getOnlineDocUrl();
	if (isBrowseSupported()) {
	urlStr = "<a style='color:#35556b' href=\"" + urlStr + "\">" + urlStr + "</a>";
	}

	JPanel infoAndLogoPanel = new JPanel(new BorderLayout(10, 10));
	infoAndLogoPanel.setBackground(bgColor);

	String colorStr = String.format("%06x", textColor.getRGB() & 0xFFFFFF);
	JEditorPane helpLink = new JEditorPane("text/html",
	"<html><font color=#"+ colorStr + ">" +
	Resources.format(Messages.HELP_ABOUT_DIALOG_JCONSOLE_VERSION, jConsoleVersion) +
	"<p>" + Resources.format(Messages.HELP_ABOUT_DIALOG_JAVA_VERSION, (vmName +", "+ vmVersion)) +
	"<p>" + urlStr + "</html>");
	helpLink.setOpaque(false);
	helpLink.setEditable(false);
	helpLink.setForeground(textColor);
	mainPanel.setBorder(BorderFactory.createLineBorder(borderColor));
	infoAndLogoPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
	helpLink.addHyperlinkListener(new HyperlinkListener() {
	public void hyperlinkUpdate(HyperlinkEvent e) {
	if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
	browse(e.getDescription());
	}
	}
	});
	infoAndLogoPanel.add(helpLink, NORTH);

	ImageIcon brandLogoIcon = new ImageIcon(getClass().getResource("resources/brandlogo.png"));
	JLabel brandLogo = new JLabel(brandLogoIcon, JLabel.LEADING);

	JButton closeButton = new JButton(closeAction);

	JPanel bottomPanel = new TPanel(0, 0);
	JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.TRAILING));
	buttonPanel.setOpaque(false);

	mainPanel.add(infoAndLogoPanel, CENTER);
	cp.add(bottomPanel, SOUTH);

	infoAndLogoPanel.add(brandLogo, SOUTH);

	buttonPanel.setBorder(new EmptyBorder(2, 12, 2, 12));
	buttonPanel.add(closeButton);
	bottomPanel.add(buttonPanel, NORTH);

	statusBar = new JLabel(" ");
	bottomPanel.add(statusBar, SOUTH);

	cp.add(mainPanel, NORTH);

	pack();
	setLocationRelativeTo(jConsole);
	Utilities.updateTransparency(this);
	}

	public void showDialog() {
	statusBar.setText(" ");
	setVisible(true);
	try {
	// Bring to front of other dialogs
	setSelected(true);
	} catch (PropertyVetoException e) {
	// ignore
	}
	}

	private static AboutDialog getAboutDialog(JConsole jConsole) {
	if (aboutDialog == null) {
	aboutDialog = new AboutDialog(jConsole);
	}
	return aboutDialog;
	}

	static void showAboutDialog(JConsole jConsole) {
	getAboutDialog(jConsole).showDialog();
	}

	static void browseUserGuide(JConsole jConsole) {
	getAboutDialog(jConsole).browse(getOnlineDocUrl());
	}

	static boolean isBrowseSupported() {
	return (Desktop.isDesktopSupported() &&
	Desktop.getDesktop().isSupported(Desktop.Action.BROWSE));
	}

	void browse(String urlStr) {
	try {
	Desktop.getDesktop().browse(new URI(urlStr));
	} catch (Exception ex) {
	showDialog();
	statusBar.setText(ex.getLocalizedMessage());
	if (JConsole.isDebug()) {
	ex.printStackTrace();
	}
	}
	}

	private void createActions() {
	closeAction = new AbstractAction(Messages.CLOSE) {
	public void actionPerformed(ActionEvent ev) {
	setVisible(false);
	statusBar.setText("");
	}
	};
	}

	private static String getOnlineDocUrl() {
	String version = Integer.toString(jdkMinorVersion());
	return Resources.format(Messages.HELP_ABOUT_DIALOG_USER_GUIDE_LINK_URL,
	version);
	}

	private static class TPanel extends JPanel {
	TPanel(int hgap, int vgap) {
	super(new BorderLayout(hgap, vgap));
	setOpaque(false);
	}
	}
	}

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