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/* SwingDemo.java -- An example of using the javax.swing UI.

   Copyright (C) 2003, 2004, 2005, 2006  Free Software Foundation, Inc.

This file is part of GNU Classpath examples.

GNU Classpath is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2, or (at your option)

any later version.

GNU Classpath 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 for more details.

You should have received a copy of the GNU General Public License

along with GNU Classpath; see the file COPYING.  If not, write to the

Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301 USA.

*/

package gnu.classpath.examples.swing;

import gnu.classpath.examples.java2d.JNIOverhead;

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.plaf.basic.BasicLookAndFeel;

import javax.swing.plaf.metal.DefaultMetalTheme;

import javax.swing.plaf.metal.MetalLookAndFeel;

import javax.swing.plaf.metal.MetalTheme;

import javax.swing.plaf.metal.OceanTheme;

import java.lang.reflect.Method;

import java.net.URL;

public class Demo

{

  JFrame frame;

  /**

   * The main desktop. This is package private to avoid synthetic accessor

   * method.

   */

  JDesktopPane desktop;

  /**

   * The themes menu. This is implemented as a field so that the L&F switcher

   * can disable the menu when a non-Metal L&F is selected.

   */

  JMenu themesMenu;

  static Color blueGray = new Color(0xdc, 0xda, 0xd5);

  private static Icon stockIcon(String s)

  {

    return getIcon("/gnu/classpath/examples/icons/stock-" + s + ".png", s);

  }

  static Icon bigStockIcon(String s)

  {

    return getIcon("/gnu/classpath/examples/icons/big-" + s + ".png", s);

  }

  static Icon getIcon(String location, String name)

  {

    URL url = Demo.class.getResource(location);

    if (url == null) System.err.println("WARNING " + location + " not found.");

    return new ImageIcon(url, name);

  }

  private JMenuBar mkMenuBar()

  {

    JMenuBar bar = new JMenuBar();

    JMenu file = new JMenu("File");

    JMenu edit = new JMenu("Edit");

    JMenu help = new JMenu("Help");

    file.setMnemonic(KeyEvent.VK_F);

    edit.setMnemonic(KeyEvent.VK_E);

    help.setMnemonic(KeyEvent.VK_H);

    file.add(new JMenuItem("New", stockIcon("new")));

    file.add(new JMenuItem("Open", stockIcon("open")));

    JMenu recent = new JMenu("Recent Files...");

    recent.add(new JMenuItem("war-and-peace.txt"));

    recent.add(new JMenuItem("taming-of-shrew.txt"));

    recent.add(new JMenuItem("sun-also-rises.txt"));

    file.add(recent);

    file.add(new JMenuItem("Save", stockIcon("save")));

    file.add(new JMenuItem("Save as...", stockIcon("save-as")));

    JMenuItem exit = new JMenuItem("Exit", stockIcon("quit"));

    exit.addActionListener(new ActionListener()

      {

        public void actionPerformed(ActionEvent e)

        {

          System.exit(1);

        }

      });

    file.add(exit);

    edit.add(new JMenuItem("Cut", stockIcon("cut")));

    edit.add(new JMenuItem("Copy", stockIcon("copy")));

    edit.add(new JMenuItem("Paste", stockIcon("paste")));

    JMenu preferences = new JMenu("Preferences...");

    preferences.add(new JCheckBoxMenuItem("Microphone Active",

                    stockIcon("mic")));

    preferences.add(new JCheckBoxMenuItem("Check Spelling",

                    stockIcon("spell-check")));

    preferences.add(new JCheckBoxMenuItem("World Peace"));

    preferences.add(new JSeparator());

    preferences.add(new JRadioButtonMenuItem("Radio Button"));

    edit.add(preferences);

    JMenu examples = new JMenu("Examples");

    examples.add(new JMenuItem(new PopupAction("Buttons",

                                             ButtonDemo.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("Slider",

                                             SliderDemo.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("ProgressBar",

                                        ProgressBarDemo.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("Scrollbar",

                                          ScrollBarDemo.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("Spinner",

                                            SpinnerDemo.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("TextField",

                                          TextFieldDemo.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("TextArea",

                                           TextAreaDemo.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("FileChooser",

                                        FileChooserDemo.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("ComboBox",

                                           ComboBoxDemo.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("Table",

                                              TableDemo.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("List",

                                               ListDemo.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("TabbedPane",

                                         TabbedPaneDemo.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("Tree",

                                               TreeDemo.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("Theme Editor",

                                       MetalThemeEditor.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("DocumentFilter",

                                     DocumentFilterDemo.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("NavigationFilter",

                                               NavigationFilterDemo.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("JNI Overhead",

                                               JNIOverhead.createDemoFactory())));

    examples.add(new JMenuItem(new PopupAction("HTML Demo",

                                               HtmlDemo.createDemoFactory())));

    final JMenuItem vmMenu;

    help.add(new JMenuItem("just play with the widgets"));

    help.add(new JMenuItem("and enjoy the sensation of"));

    help.add(new JMenuItem("your neural connections growing"));

    help.add(new JSeparator());

    help.add(vmMenu = new JMenuItem("Really, which VM is this running on?"));

    vmMenu.addActionListener(new ActionListener()

      {

        public void actionPerformed(ActionEvent ae)

          {

            String message = "This is "

                             + System.getProperty("java.vm.name")

                             + " Version "

                             + System.getProperty("java.vm.version")

                             + " distributed by "

                             + System.getProperty("java.vm.vendor")

                             + ".";

            String gnuClasspath = System.getProperty("gnu.classpath.version");

            if(gnuClasspath != null)

              message += "\nThe runtime's libraries are "

                         + "kindly provided by the "

                         + "members of GNU Classpath and are in version "

                         + gnuClasspath + ".";

                         JOptionPane.showMessageDialog(vmMenu, message);

            }

      });

    // Installs the BasicLookAndFeel.

    UIManager.installLookAndFeel("(Basic Look And Feel)",

                                 InstantiableBasicLookAndFeel.class.getName());

    // Create L&F menu.

    JMenu lafMenu = new JMenu("Look and Feel");

    ButtonGroup lafGroup = new ButtonGroup();

    UIManager.LookAndFeelInfo[] lafs = UIManager.getInstalledLookAndFeels();

    String currentLaf = UIManager.getLookAndFeel().getClass().getName();

    for (int i = 0; i < lafs.length; ++i)

      {

        UIManager.LookAndFeelInfo laf = lafs[i];

        ChangeLAFAction action = new ChangeLAFAction(laf);

        JRadioButtonMenuItem lafItem = new JRadioButtonMenuItem(action);

        boolean selected = laf.getClassName().equals(currentLaf);

        lafItem.setSelected(selected);

        lafMenu.add(lafItem);

        lafGroup.add(lafItem);

      }

    // Create themes menu.

    themesMenu = new JMenu("Themes");

    ButtonGroup themesGroup = new ButtonGroup();

    // In order to make the demo runable on a 1.4 type VM we have to avoid calling

    // MetalLookAndFeel.getCurrentTheme(). We simply check whether this method exists

    // and is public.

    Method m = null;

    try

      {

        m = MetalLookAndFeel.class.getMethod("getCurrentTheme", null);

      }

    catch (NoSuchMethodException nsme)

      {

        // Ignore it.

      }

    if (m != null)

      {

        JRadioButtonMenuItem ocean =

          new JRadioButtonMenuItem(new ChangeThemeAction(new OceanTheme()));

        ocean.setSelected(MetalLookAndFeel.getCurrentTheme() instanceof OceanTheme);

        themesMenu.add(ocean);

        themesGroup.add(ocean);

        JRadioButtonMenuItem steel =

          new JRadioButtonMenuItem(new ChangeThemeAction(new DefaultMetalTheme()));

        ocean.setSelected(MetalLookAndFeel.getCurrentTheme()

                          instanceof DefaultMetalTheme);

        themesMenu.add(steel);

        themesGroup.add(steel);

      }

    else

      {

        themesMenu.setEnabled(false);

      }

    bar.add(file);

    bar.add(edit);

    bar.add(examples);

    bar.add(lafMenu);

    bar.add(themesMenu);

    bar.add(help);

    return bar;

  }

  private static void triggerDialog(final JButton but, final String dir)

  {

    but.addActionListener(new ActionListener()

      {

        public void actionPerformed(ActionEvent e)

        {

          JOptionPane.showConfirmDialog(but,

                                        "Sure you want to go " + dir + "?",

                                        "Confirm",

                                        JOptionPane.OK_CANCEL_OPTION,

                                        JOptionPane.QUESTION_MESSAGE,

                                        bigStockIcon("warning"));

        }

      });

  }

  static JToolBar mkToolBar()

  {

    JToolBar bar = new JToolBar();

    JButton b = mkButton(stockIcon("go-back"));

    triggerDialog(b, "back");

    bar.add(b);

    b = mkButton(stockIcon("go-down"));

    triggerDialog(b, "down");

    bar.add(b);

    b = mkButton(stockIcon("go-forward"));

    triggerDialog(b, "forward");

    bar.add(b);

    return bar;

  }

  static String halign2str(int a)

  {

    switch (a)

      {

      case SwingConstants.CENTER:

        return "Center";

      case SwingConstants.RIGHT:

        return "Right";

      case SwingConstants.LEFT:

        return "Left";

      default:

        return "Unknown";

      }

  }

  private static JButton mkButton(String title, Icon icon,

                                  int hAlign, int vAlign,

                                  int hPos, int vPos)

  {

    JButton b;

    if (icon == null)

      b = new JButton(title);

    else if (title == null)

      b = new JButton(icon);

    else

      b = new JButton(title, icon);

    b.setToolTipText(title);

    if (hAlign != -1) b.setHorizontalAlignment(hAlign);

    if (vAlign != -1) b.setVerticalAlignment(vAlign);

    if (hPos != -1) b.setHorizontalTextPosition(hPos);

    if (vPos != -1) b.setVerticalTextPosition(vPos);

    return b;

  }

  static JButton mkButton(String title)

  {

    return mkButton(title, null, -1, -1, -1, -1);

  }

  static JButton mkButton(Icon i)

  {

    return mkButton(null, i, -1, -1, -1, -1);

  }

  public Demo()

  {

    frame = new JFrame("Swing Activity Board");

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    frame.setJMenuBar(mkMenuBar());

    JComponent component = (JComponent) frame.getContentPane();

    component.setLayout(new BorderLayout());

    component.add(mkToolBar(), BorderLayout.NORTH);

    JPanel main = new JPanel();

    main.setLayout(new BoxLayout(main, BoxLayout.Y_AXIS));

    desktop = createDesktop();

    main.add(desktop);

    main.add(mkButtonBar());

    component.add(main, BorderLayout.CENTER);

    frame.pack();

    frame.show();

  }

  public static class LaterMain

    implements Runnable

  {

    public void run()

    {

      new Demo();

    }

  }

  public static void main(String args[])

  {

    SwingUtilities.invokeLater(new LaterMain());

  }

  private static JButton mkBigButton(String title)

  {

    JButton b = new JButton(title);

    b.setMargin(new Insets(5,5,5,5));

    return b;

  }

  static JButton mkDisposerButton(final JFrame c)

  {

    JButton close = mkBigButton("Close");

    close.addActionListener(new ActionListener()

      {

        public void actionPerformed(ActionEvent e)

        {

          c.dispose();

        }

      });

    return close;

  }

  public static JColorChooser mkColorChooser()

  {

    return new JColorChooser();

  }

  /**

   * This action brings up a new Window with the specified content.

   */

  private class PopupAction

    extends AbstractAction

  {

    /**

     * The component to be shown.

     */

    private DemoFactory demoFactory;

    /**

     * Creates a new PopupAction with the specified name and showing the

     * component created by the specified DemoFactory when activated.

     *

     * @param n the name of the action

     * @param factory the demo factory

     */

    PopupAction(String n, DemoFactory factory)

    {

      putValue(NAME, n);

      demoFactory = factory;

    }

    /**

     * Brings up the new window showing the component stored in the

     * constructor.

     *

     * @param e the action event that triggered the action

     */

    public void actionPerformed(ActionEvent e)

    {

      JInternalFrame frame = new JInternalFrame((String) getValue(NAME));

      frame.setClosable(true);

      frame.setIconifiable(true);

      frame.setMaximizable(true);

      frame.setResizable(true);

      frame.setContentPane(demoFactory.createDemo());

      frame.pack();

      desktop.add(frame);

      frame.setVisible(true);

    }

  }

  private JPanel mkButtonBar()

  {

    JPanel panel = new JPanel(new GridLayout(3, 1, 5, 5));

    panel.add(new JButton(new PopupAction("Buttons",

                                          ButtonDemo.createDemoFactory())));

    panel.add(new JButton(new PopupAction("Slider",

                                          SliderDemo.createDemoFactory())));

    panel.add(new JButton(new PopupAction("ProgressBar",

                                        ProgressBarDemo.createDemoFactory())));

    panel.add(new JButton(new PopupAction("ScrollBar",

                                          ScrollBarDemo.createDemoFactory())));

    panel.add(new JButton(new PopupAction("Spinner",

                                          SpinnerDemo.createDemoFactory())));

    panel.add(new JButton(new PopupAction("TextField",

                                          TextFieldDemo.createDemoFactory())));

    panel.add(new JButton(new PopupAction("TextArea",

                                          TextAreaDemo.createDemoFactory())));

    panel.add(new JButton(new PopupAction("FileChooser",

                                        FileChooserDemo.createDemoFactory())));

    panel.add(new JButton(new PopupAction("ComboBox",

                                          ComboBoxDemo.createDemoFactory())));

    panel.add(new JButton(new PopupAction("Table",

                                          TableDemo.createDemoFactory())));

    panel.add(new JButton(new PopupAction("List",

                                          ListDemo.createDemoFactory())));

    panel.add(new JButton(new PopupAction("TabbedPane",

                                         TabbedPaneDemo.createDemoFactory())));

    panel.add(new JButton(new PopupAction("Tree",

                                          TreeDemo.createDemoFactory())));

    panel.add(new JButton(new PopupAction("Theme Editor",

                                      MetalThemeEditor.createDemoFactory())));

    panel.add(new JButton(new PopupAction("JNI Overhead",

                                          JNIOverhead.createDemoFactory())));

    panel.add(new JButton(new PopupAction("HTML",

                                          HtmlDemo.createDemoFactory())));

    JButton exitDisposer = mkDisposerButton(frame);

    panel.add(exitDisposer);

    panel.setMaximumSize(new Dimension(Integer.MAX_VALUE,

                                       panel.getPreferredSize().height));

    exitDisposer.addActionListener(new ActionListener()

      {

        public void actionPerformed(ActionEvent e)

        {

          System.exit(1);

        }

      });

    return panel;

  }

  /**

   * Creates and returns the main desktop.

   *

   * @return the main desktop

   */

  private JDesktopPane createDesktop()

  {

    JDesktopPane d = new DemoDesktop();

    d.setPreferredSize(new Dimension(900, 500));

    return d;

  }

  /**

   * This Action is used to switch Metal themes.

   */

  class ChangeThemeAction extends AbstractAction

  {

    /**

     * The theme to switch to.

     */

    MetalTheme theme;

    /**

     * Creates a new ChangeThemeAction for the specified theme.

     *

     * @param t the theme to switch to

     */

    ChangeThemeAction(MetalTheme t)

    {

      theme = t;

      putValue(NAME, t.getName());

    }

    /**

     * Changes the theme to the one specified in the constructor.

     *

     * @param event the action event that triggered this action

     */

    public void actionPerformed(ActionEvent event)

    {

      MetalLookAndFeel.setCurrentTheme(theme);

      try

        {

          // Only switch theme if we have a metal L&F. It is still necessary

          // to install a new MetalLookAndFeel instance.

          if (UIManager.getLookAndFeel() instanceof MetalLookAndFeel)

            UIManager.setLookAndFeel(new MetalLookAndFeel());

        }

      catch (UnsupportedLookAndFeelException ex)

        {

          ex.printStackTrace();

        }

      SwingUtilities.updateComponentTreeUI(frame);

    }

  }

  /**

   * This Action is used to switch Metal themes.

   */

  class ChangeLAFAction extends AbstractAction

  {

    /**

     * The theme to switch to.

     */

    private UIManager.LookAndFeelInfo laf;

    /**

     * Creates a new ChangeLAFAction for the specified L&F.

     *

     * @param l the L&F to switch to

     */

    ChangeLAFAction(UIManager.LookAndFeelInfo l)

    {

      laf = l;

      putValue(NAME, laf.getName());

    }

    /**

     * Changes the theme to the one specified in the constructor.

     *

     * @param event the action event that triggered this action

     */

    public void actionPerformed(ActionEvent event)

    {

      try

        {

          UIManager.setLookAndFeel(laf.getClassName());

        }

      catch (Exception ex)

        {

          ex.printStackTrace();

        }

      SwingUtilities.updateComponentTreeUI(frame);

      themesMenu.setEnabled(laf.getClassName()

                           .equals("javax.swing.plaf.metal.MetalLookAndFeel"));

    }

  }

  /**

   * An implementation of BasicLookAndFeel which can be instantiated.

   *

   * @author Robert Schuster (robertschuster@fsfe.org)

   *

   */

  public static class InstantiableBasicLookAndFeel extends BasicLookAndFeel

  {

    public String getDescription()

    {

      return "An instantiable implementation of BasicLookAndFeel";

    }