modules/core/src/main/java/org/apache/ignite/startup/cmdline/AboutDialog.java - ignite - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.
  * The ASF licenses this file to You under the Apache License, Version 2.0
  * (the "License"); you may not use this file except in compliance with
  * the License.  You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package org.apache.ignite.startup.cmdline;

 import java.awt.BorderLayout;
 import java.awt.Color;
 import java.awt.FlowLayout;
 import java.awt.GridBagConstraints;
 import java.awt.GridBagLayout;
 import java.awt.Insets;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.KeyEvent;
 import java.awt.image.BufferedImage;
 import java.io.IOException;
 import java.net.URL;
 import java.time.LocalDate;
 import java.time.format.DateTimeFormatter;
 import javax.imageio.ImageIO;
 import javax.swing.AbstractAction;
 import javax.swing.Action;
 import javax.swing.BorderFactory;
 import javax.swing.Box;
 import javax.swing.BoxLayout;
 import javax.swing.ImageIcon;
 import javax.swing.JButton;
 import javax.swing.JComponent;
 import javax.swing.JDialog;
 import javax.swing.JLabel;
 import javax.swing.JPanel;
 import javax.swing.KeyStroke;
 import javax.swing.SwingUtilities;
 import javax.swing.border.Border;

 /**
  * About dialog.
  */
 public class AboutDialog extends JDialog {
     /** */
     private static final long serialVersionUID = 0L;

     /** Border color. */
     private static final Color VALUE_BORDER_COLOR = new Color(0xcdcdcd);

     /** Release date formatter. */
     private static final DateTimeFormatter RELEASE_DATE_FORMATTER = DateTimeFormatter.ofPattern("dd MMM yyyy");

     /** Global reference to about dialog to prevent double open. */
     private static AboutDialog aboutDlg;

     /** Application name */
     private final String appName;

     /** Banner icon url spec */
     private final String bannerSpec;

     /** Version. */
     private final String ver;

     /** Release date. */
     private final LocalDate release;

     /** Copyright. */
     private final String copyright;

     /** Grid bag constraints. */
     private final GridBagConstraints gbc;

     /**
      * @param appName Application name.
      * @param bannerSpec Banner icon url spec.
      * @param ver Version.
      * @param release Release date.
      * @param copyright Copyright.
      */
     AboutDialog(String appName, String bannerSpec, String ver, LocalDate release, String copyright) {
         this.appName = appName;

         this.bannerSpec = bannerSpec;

         this.ver = ver;
         this.release = release;
         this.copyright = copyright;

         gbc = new GridBagConstraints();
         gbc.fill = GridBagConstraints.HORIZONTAL;

         initDialog();
     }

     /** Close action. */
     private final Action closeAct = new AbstractAction("Close") {
         @Override public void actionPerformed(ActionEvent e) {
             assert SwingUtilities.isEventDispatchThread();

             dispose();
         }
     };

     /** Close button. */
     private final JButton closeBtn = new JButton(closeAct);

     /**
      * Create and initialize dialog controls.
      *
      * @return Panel with dialog controls.
      */
     private JPanel initComponents() {
         JPanel content = new JPanel(new BorderLayout(0, 5));

         content.add(createBannerPanel(), BorderLayout.NORTH);
         content.add(createLicensePanel(), BorderLayout.CENTER);
         content.add(createButtonPanel(), BorderLayout.SOUTH);

         return content;
     }

     /**
      * @return Panel with banner.
      */
     private JPanel createBannerPanel() {
         JPanel bannerPanel = new JPanel(new FlowLayout(FlowLayout.LEFT, 10, 5));

         bannerPanel.setBackground(Color.WHITE);

         try {
             URL url = new URL(bannerSpec);

             BufferedImage image = ImageIO.read(url);

             bannerPanel.add(new JLabel(new ImageIcon(image)));
         }
         catch (IOException ioe) {
             ioe.printStackTrace();
         }

         JPanel msgPanel = new JPanel();
         msgPanel.setLayout(new BoxLayout(msgPanel, BoxLayout.Y_AXIS));
         msgPanel.setBackground(Color.WHITE);

         msgPanel.add(new JLabel("<html><b>About Ignite</b></html>"));
         msgPanel.add(Box.createVerticalStrut(5));
         msgPanel.add(new JLabel(appName));

         bannerPanel.add(msgPanel);

         return bannerPanel;
     }

     /**
      * Creates strut.
      *
      * @return Grid bag constraints.
      */
     private GridBagConstraints gbcStrut() {
         gbc.gridx = 0;
         gbc.gridwidth = GridBagConstraints.REMAINDER;

         gbc.insets = new Insets(5, 0, 0, 0);

         return gbc;
     }

     /**
      * @return Grid bag constraints.
      */
     private GridBagConstraints gbcSeparator() {
         gbc.gridx = 0;
         gbc.gridwidth = GridBagConstraints.REMAINDER;

         gbc.insets = new Insets(5, 10, 10, 10);

         return gbc;
     }

     /**
      * License label.
      *
      * @return Grid bag constraints.
      */
     private GridBagConstraints gbcLicenseLabel() {
         gbc.gridx = 0;
         gbc.gridwidth = GridBagConstraints.RELATIVE;
         gbc.anchor = GridBagConstraints.WEST;

         gbc.insets = new Insets(0, 10, 5, 0);

         return gbc;
     }

     /**
      * License field.
      *
      * @return Grid bag constraints.
      */
     private GridBagConstraints gbcLicenseField() {
         gbc.gridx = 1;
         gbc.gridwidth = GridBagConstraints.RELATIVE;
         gbc.weightx = 400;

         gbc.insets = new Insets(0, 10, 5, 10);

         return gbc;
     }

     /**
      * @return Panel with controls to display license.
      */
     private JPanel createLicensePanel() {
         JPanel licPanel = new JPanel(new GridBagLayout());

         licPanel.add(Box.createVerticalGlue(), gbcStrut());

         addAboutItem(licPanel, "Version:", ver);
         addAboutItem(licPanel, "Release Date:", RELEASE_DATE_FORMATTER.format(release));
         addAboutItem(licPanel, "Copyright:", copyright);

         return licPanel;
     }

     /**
      * @return Panel with close button.
      */
     private JPanel createButtonPanel() {
         closeBtn.setAction(closeAct);
         closeBtn.setToolTipText("<html><b>Closes</b> Dialog</html>");

         JPanel btnPanel = new JPanel();
         btnPanel.add(closeBtn);

         return btnPanel;
     }

     /**
      * Initialize dialog.
      */
     private void initDialog() {
         setContentPane(initComponents());

         pack();

         setDefaultCloseOperation(DISPOSE_ON_CLOSE);

         getRootPane().setDefaultButton(closeBtn);
         setEscAction(closeAct);

         setModal(true);

         setResizable(false);
     }

     /**
      * Add name and value labels.
      *
      * @param c Component.
      * @param name Name.
      * @param val Value.
      */
     private void addAboutItem(JComponent c, String name, Object val) {
         addAboutItem(c, name, val, null);
     }

     /**
      * Add name and value labels.
      *
      * @param c Component.
      * @param name Name.
      * @param val Value.
      * @param border Border.
      */
     private void addAboutItem(JComponent c, String name, Object val, Border border) {
         String v = val != null ? val.toString() : "n/a";
         String tip = String.format("<html><b>%s</b> &#10159; %s</html>", name, val);

         JLabel lb = new JLabel(name);
         lb.setToolTipText(tip);

         JLabel field = new JLabel(v);
         field.setOpaque(true);
         field.setBackground(Color.WHITE);
         field.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createLineBorder(VALUE_BORDER_COLOR, 1),
             BorderFactory.createEmptyBorder(0, 3, 0, 3)));

         field.setToolTipText(tip);

         if (border != null)
             field.setBorder(border);

         c.add(lb, gbcLicenseLabel());
         c.add(field, gbcLicenseField());
     }

     /**
      * Registers ESC button click with given action.
      *
      * @param act Escape button action.
      */
     private void setEscAction(ActionListener act) {
         assert (act != null);

         getRootPane().registerKeyboardAction(act,
             KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0x0),
             JComponent.WHEN_IN_FOCUSED_WINDOW
         );
     }

     /**
      * Show about dialog.
      *
      * @param appName Application name.
      * @param bannerSpec Banner icon url spec.
      * @param ver Version number.
      * @param release Release date.
      * @param copyright Copyright blurb.
      */
     public static void centerShow(String appName, String bannerSpec,
         String ver, LocalDate release, String copyright) {
         SwingUtilities.invokeLater(new Runnable() {
             @Override public void run() {
                 if (aboutDlg == null) {
                     try {
                         aboutDlg = new AboutDialog(appName, bannerSpec, ver, release, copyright);

                         aboutDlg.setLocationRelativeTo(null);
                         aboutDlg.setVisible(true);
                     }
                     finally {
                         aboutDlg = null;
                     }
                 }
                 else {
                     aboutDlg.setLocationRelativeTo(null);
                     aboutDlg.toFront();
                 }
             }
         });
     }
 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one or more
	* contributor license agreements. See the NOTICE file distributed with
	* this work for additional information regarding copyright ownership.
	* The ASF licenses this file to You under the Apache License, Version 2.0
	* (the "License"); you may not use this file except in compliance with
	* the License. You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package org.apache.ignite.startup.cmdline;

	import java.awt.BorderLayout;
	import java.awt.Color;
	import java.awt.FlowLayout;
	import java.awt.GridBagConstraints;
	import java.awt.GridBagLayout;
	import java.awt.Insets;
	import java.awt.event.ActionEvent;
	import java.awt.event.ActionListener;
	import java.awt.event.KeyEvent;
	import java.awt.image.BufferedImage;
	import java.io.IOException;
	import java.net.URL;
	import java.time.LocalDate;
	import java.time.format.DateTimeFormatter;
	import javax.imageio.ImageIO;
	import javax.swing.AbstractAction;
	import javax.swing.Action;
	import javax.swing.BorderFactory;
	import javax.swing.Box;
	import javax.swing.BoxLayout;
	import javax.swing.ImageIcon;
	import javax.swing.JButton;
	import javax.swing.JComponent;
	import javax.swing.JDialog;
	import javax.swing.JLabel;
	import javax.swing.JPanel;
	import javax.swing.KeyStroke;
	import javax.swing.SwingUtilities;
	import javax.swing.border.Border;

	/**
	* About dialog.
	*/
	public class AboutDialog extends JDialog {
	/** */
	private static final long serialVersionUID = 0L;

	/** Border color. */
	private static final Color VALUE_BORDER_COLOR = new Color(0xcdcdcd);

	/** Release date formatter. */
	private static final DateTimeFormatter RELEASE_DATE_FORMATTER = DateTimeFormatter.ofPattern("dd MMM yyyy");

	/** Global reference to about dialog to prevent double open. */
	private static AboutDialog aboutDlg;

	/** Application name */
	private final String appName;

	/** Banner icon url spec */
	private final String bannerSpec;

	/** Version. */
	private final String ver;

	/** Release date. */
	private final LocalDate release;

	/** Copyright. */
	private final String copyright;

	/** Grid bag constraints. */
	private final GridBagConstraints gbc;

	/**
	* @param appName Application name.
	* @param bannerSpec Banner icon url spec.
	* @param ver Version.
	* @param release Release date.
	* @param copyright Copyright.
	*/
	AboutDialog(String appName, String bannerSpec, String ver, LocalDate release, String copyright) {
	this.appName = appName;

	this.bannerSpec = bannerSpec;

	this.ver = ver;
	this.release = release;
	this.copyright = copyright;

	gbc = new GridBagConstraints();
	gbc.fill = GridBagConstraints.HORIZONTAL;

	initDialog();
	}

	/** Close action. */
	private final Action closeAct = new AbstractAction("Close") {
	@Override public void actionPerformed(ActionEvent e) {
	assert SwingUtilities.isEventDispatchThread();

	dispose();
	}
	};

	/** Close button. */
	private final JButton closeBtn = new JButton(closeAct);

	/**
	* Create and initialize dialog controls.
	*
	* @return Panel with dialog controls.
	*/
	private JPanel initComponents() {
	JPanel content = new JPanel(new BorderLayout(0, 5));

	content.add(createBannerPanel(), BorderLayout.NORTH);
	content.add(createLicensePanel(), BorderLayout.CENTER);
	content.add(createButtonPanel(), BorderLayout.SOUTH);

	return content;
	}

	/**
	* @return Panel with banner.
	*/
	private JPanel createBannerPanel() {
	JPanel bannerPanel = new JPanel(new FlowLayout(FlowLayout.LEFT, 10, 5));

	bannerPanel.setBackground(Color.WHITE);

	try {
	URL url = new URL(bannerSpec);

	BufferedImage image = ImageIO.read(url);

	bannerPanel.add(new JLabel(new ImageIcon(image)));
	}
	catch (IOException ioe) {
	ioe.printStackTrace();
	}

	JPanel msgPanel = new JPanel();
	msgPanel.setLayout(new BoxLayout(msgPanel, BoxLayout.Y_AXIS));
	msgPanel.setBackground(Color.WHITE);

	msgPanel.add(new JLabel("<html><b>About Ignite</b></html>"));
	msgPanel.add(Box.createVerticalStrut(5));
	msgPanel.add(new JLabel(appName));

	bannerPanel.add(msgPanel);

	return bannerPanel;
	}

	/**
	* Creates strut.
	*
	* @return Grid bag constraints.
	*/
	private GridBagConstraints gbcStrut() {
	gbc.gridx = 0;
	gbc.gridwidth = GridBagConstraints.REMAINDER;

	gbc.insets = new Insets(5, 0, 0, 0);

	return gbc;
	}

	/**
	* @return Grid bag constraints.
	*/
	private GridBagConstraints gbcSeparator() {
	gbc.gridx = 0;
	gbc.gridwidth = GridBagConstraints.REMAINDER;

	gbc.insets = new Insets(5, 10, 10, 10);

	return gbc;
	}

	/**
	* License label.
	*
	* @return Grid bag constraints.
	*/
	private GridBagConstraints gbcLicenseLabel() {
	gbc.gridx = 0;
	gbc.gridwidth = GridBagConstraints.RELATIVE;
	gbc.anchor = GridBagConstraints.WEST;

	gbc.insets = new Insets(0, 10, 5, 0);

	return gbc;
	}

	/**
	* License field.
	*
	* @return Grid bag constraints.
	*/
	private GridBagConstraints gbcLicenseField() {
	gbc.gridx = 1;
	gbc.gridwidth = GridBagConstraints.RELATIVE;
	gbc.weightx = 400;

	gbc.insets = new Insets(0, 10, 5, 10);

	return gbc;
	}

	/**
	* @return Panel with controls to display license.
	*/
	private JPanel createLicensePanel() {
	JPanel licPanel = new JPanel(new GridBagLayout());

	licPanel.add(Box.createVerticalGlue(), gbcStrut());

	addAboutItem(licPanel, "Version:", ver);
	addAboutItem(licPanel, "Release Date:", RELEASE_DATE_FORMATTER.format(release));
	addAboutItem(licPanel, "Copyright:", copyright);

	return licPanel;
	}

	/**
	* @return Panel with close button.
	*/
	private JPanel createButtonPanel() {
	closeBtn.setAction(closeAct);
	closeBtn.setToolTipText("<html><b>Closes</b> Dialog</html>");

	JPanel btnPanel = new JPanel();
	btnPanel.add(closeBtn);

	return btnPanel;
	}

	/**
	* Initialize dialog.
	*/
	private void initDialog() {
	setContentPane(initComponents());

	pack();

	setDefaultCloseOperation(DISPOSE_ON_CLOSE);

	getRootPane().setDefaultButton(closeBtn);
	setEscAction(closeAct);

	setModal(true);

	setResizable(false);
	}

	/**
	* Add name and value labels.
	*
	* @param c Component.
	* @param name Name.
	* @param val Value.
	*/
	private void addAboutItem(JComponent c, String name, Object val) {
	addAboutItem(c, name, val, null);
	}

	/**
	* Add name and value labels.
	*
	* @param c Component.
	* @param name Name.
	* @param val Value.
	* @param border Border.
	*/
	private void addAboutItem(JComponent c, String name, Object val, Border border) {
	String v = val != null ? val.toString() : "n/a";
	String tip = String.format("<html><b>%s</b> ➯ %s</html>", name, val);

	JLabel lb = new JLabel(name);
	lb.setToolTipText(tip);

	JLabel field = new JLabel(v);
	field.setOpaque(true);
	field.setBackground(Color.WHITE);
	field.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createLineBorder(VALUE_BORDER_COLOR, 1),
	BorderFactory.createEmptyBorder(0, 3, 0, 3)));

	field.setToolTipText(tip);

	if (border != null)
	field.setBorder(border);

	c.add(lb, gbcLicenseLabel());
	c.add(field, gbcLicenseField());
	}

	/**
	* Registers ESC button click with given action.
	*
	* @param act Escape button action.
	*/
	private void setEscAction(ActionListener act) {
	assert (act != null);

	getRootPane().registerKeyboardAction(act,
	KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0x0),
	JComponent.WHEN_IN_FOCUSED_WINDOW
	);
	}

	/**
	* Show about dialog.
	*
	* @param appName Application name.
	* @param bannerSpec Banner icon url spec.
	* @param ver Version number.
	* @param release Release date.
	* @param copyright Copyright blurb.
	*/
	public static void centerShow(String appName, String bannerSpec,
	String ver, LocalDate release, String copyright) {
	SwingUtilities.invokeLater(new Runnable() {
	@Override public void run() {
	if (aboutDlg == null) {
	try {
	aboutDlg = new AboutDialog(appName, bannerSpec, ver, release, copyright);

	aboutDlg.setLocationRelativeTo(null);
	aboutDlg.setVisible(true);
	}
	finally {
	aboutDlg = null;
	}
	}
	else {
	aboutDlg.setLocationRelativeTo(null);
	aboutDlg.toFront();
	}
	}
	});
	}
	}