/* SwingDemo.java -- An example of using the javax.swing UI.
   Copyright (C) 2003, 2004  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., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.
*/


package gnu.classpath.examples.swing;

import java.awt.*;
import java.awt.event.*;
import java.awt.font.*;
import java.awt.geom.*;
import java.awt.image.*;

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

import java.net.URL;
import java.util.*;

public class Demo
{
  JFrame frame;
  static Color blueGray = new Color(0xdc, 0xda, 0xd5);

  static class GNULookAndFeel extends BasicLookAndFeel
  {
    public boolean isNativeLookAndFeel()    { return true; }
    public boolean isSupportedLookAndFeel() { return true; }
    public String getDescription()          { return "GNU Look and Feel"; }
    public String getID()                   { return "GNULookAndFeel"; }
    public String getName()                 { return "GNU"; }
    
    static UIDefaults LAF_defaults;
    
    public UIDefaults getDefaults()
    {
      if (LAF_defaults == null)
        {
          LAF_defaults = super.getDefaults();
          Object[] myDefaults = new Object[] {
            "Button.background", new ColorUIResource(blueGray),
            "CheckBox.background", new ColorUIResource(blueGray),
            "CheckBoxMenuItem.background", new ColorUIResource(blueGray),
            "ToolBar.background", new ColorUIResource(blueGray),
            "Panel.background", new ColorUIResource(blueGray),
            "Slider.background", new ColorUIResource(blueGray),
            "OptionPane.background", new ColorUIResource(blueGray),
            "ProgressBar.background", new ColorUIResource(blueGray),
            "TabbedPane.background", new ColorUIResource(blueGray),
            "Label.background", new ColorUIResource(blueGray),
            "Menu.background", new ColorUIResource(blueGray),
            "MenuBar.background", new ColorUIResource(blueGray),
            "MenuItem.background", new ColorUIResource(blueGray),
            "ScrollBar.background", new ColorUIResource(blueGray)
          };
          LAF_defaults.putDefaults(myDefaults);
        }
      return LAF_defaults;
    }
  }
  
  static
  {
    try
      {
        UIManager.setLookAndFeel(new GNULookAndFeel());
      }
    catch (UnsupportedLookAndFeelException e)
      {
        System.err.println("Cannot install GNULookAndFeel, exiting");
        System.exit(1);
      }
  }

  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);
  }

  static 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"));
    edit.add(preferences);

    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"));

    bar.add(file);
    bar.add(edit);
    bar.add(help);
    return bar;
  }

  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 valign2str(int a)
  {
    switch (a)
      {
      case SwingConstants.CENTER:
        return "Center";
      case SwingConstants.TOP:
        return "Top";
      case SwingConstants.BOTTOM:
        return "Bottom";
      default:
        return "Unknown";
      }
  }

  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";
      }
  }

  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);
    
    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);
  }


  static JPanel mkButtonWorld()
  {
    Icon ii = bigStockIcon("home");
    int CENTER = SwingConstants.CENTER;
    int TOP = SwingConstants.TOP;
    int BOTTOM = SwingConstants.BOTTOM;

    int[] valigns = new int[] {SwingConstants.CENTER,
                               SwingConstants.TOP,
                               SwingConstants.BOTTOM};

    int[] haligns = new int[] {SwingConstants.CENTER,
                               SwingConstants.RIGHT,
                               SwingConstants.LEFT};

    Border[] borders = new Border[] { 
      new SoftBevelBorder(BevelBorder.RAISED),
      new SoftBevelBorder(BevelBorder.LOWERED),
      new BevelBorder(BevelBorder.RAISED),
      
      LineBorder.createBlackLineBorder(),
      new MatteBorder(2, 2, 2, 2, Color.GREEN),
      LineBorder.createGrayLineBorder(),
      
      new BevelBorder(BevelBorder.LOWERED),
      new EtchedBorder(EtchedBorder.RAISED),
      new EtchedBorder(EtchedBorder.LOWERED)      
    };

    JComponent[] comps = new JComponent[3*3];

    int q = 0;

    JPanel panel = new JPanel();
    panel.setLayout(new GridLayout(3, 3));

    for (int i = 0; i < 3; ++i)
      for (int j = 0; j < 3; ++j)
        {
          JButton b = mkButton(halign2str(haligns[i])
                               + valign2str(valigns[j]),
                               ii,
                               -1, -1, haligns[i], valigns[j]);
          b.setBorder(borders[q++]);
          JPanel tmp = new JPanel();
          tmp.setBorder(new MatteBorder(5, 5, 5, 5, blueGray));
          tmp.add(b);
          panel.add(tmp);
        }
    
    return panel;
  }

  private static class CheckCellRenderer 
    extends JCheckBox implements ListCellRenderer
  {
    public Component getListCellRendererComponent(JList list,
                                                  Object value,
                                                  int index,
                                                  boolean isSelected,
                                                  boolean cellHasFocus)
    {
      setSelected(isSelected);
      setText(value.toString());
      
      return this;
    }
  }

  private static class LabelCellRenderer 
    extends DefaultListCellRenderer
  {
    public Component getListCellRendererComponent(JList list,
                                                  Object value,
                                                  int index,
                                                  boolean isSelected,
                                                  boolean cellHasFocus)
    {
      Component c = super.getListCellRendererComponent(list, value, index, 
                                                       isSelected,
						       cellHasFocus);
      
      return c;
    }
  }

  public static JScrollPane mkScrollPane(JComponent inner)
  {
    JScrollPane jsp;
    jsp = new JScrollPane(inner,
			  JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, 
			  JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
    
    return jsp;
  }

  public static JPanel mkListWorld()
  {

    String foo[] = new String[] { 
      "non alcoholic ",
      "carbonated ",
      "malted ",
      "fresh squeezed ",
      "imported ",
      "high fructose ",
      "enriched "
    };
    
    String bar[] = new String[] { 
      "orange juice",
      "ginger beer",
      "yak milk",
      "corn syrup",
      "herbal remedy"
    };

    final DefaultListModel mod = new DefaultListModel();
    final JList list1 = new JList(mod);
    final JList list2 = new JList(mod);

    list2.setSelectionModel(list1.getSelectionModel());
    for (int i = 0; i < bar.length; ++i)
      for (int j = 0; j < foo.length; ++j)
        mod.addElement(foo[j] + bar[i]);

    list1.setCellRenderer(new LabelCellRenderer());
    list2.setCellRenderer(new CheckCellRenderer());

    JButton add = mkButton("add element");
    add.addActionListener(new ActionListener()
      {
        int i = 0;
        public void actionPerformed(ActionEvent e)
        {
          mod.addElement("new element " + i);
          ++i;
        }
      });

    JButton del = mkButton("delete selected");
    del.addActionListener(new ActionListener()
      {
        public void actionPerformed(ActionEvent e)
        {
          for (int i = 0; i < mod.getSize(); ++i)
            if (list1.isSelectedIndex(i))
              mod.remove(i);
        }
      });


    JSplitPane splitter = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
    splitter.add(mkScrollPane(list1), JSplitPane.LEFT);
    splitter.add(mkScrollPane(list2), JSplitPane.RIGHT);

    JPanel p1 = new JPanel(); 
    p1.setLayout(new BorderLayout());

    JPanel p2 = new JPanel(); 
    p2.setLayout(new GridLayout(1, 2));
    p2.add(add);
    p2.add(del);

    p1.add(p2, BorderLayout.NORTH);
    p1.add(splitter, BorderLayout.CENTER);
    return p1;
  }


  static JPanel mkDesktopWorld()
  {
    
    final JDesktopPane desk = new JDesktopPane();
    desk.setDesktopManager(new DefaultDesktopManager());
    desk.setPreferredSize(new Dimension(300,300));
    desk.setMinimumSize(new Dimension(300,300));
    JButton but = mkButton("add frame");
    but.addActionListener(new ActionListener()
      {
        int i = 10;
        public void actionPerformed(ActionEvent e)
        {
          JInternalFrame f;
	  f = new JInternalFrame("internal", true, true, true, true);
          f.getContentPane().setLayout(new BorderLayout());
          f.getContentPane().add(mkToolBar(), BorderLayout.NORTH);
          f.getContentPane().add(mkButton(bigStockIcon("fullscreen")),
				 BorderLayout.CENTER);
          desk.add(f);
          f.setBounds(i, i, 250, 200);
          i += 30;
        }
      });
    
    JPanel panel = new JPanel();
    panel.setLayout(new BorderLayout());
    panel.add(desk, BorderLayout.CENTER);
    panel.add(but, BorderLayout.NORTH);
    but.doClick();
    but.doClick();
    return panel;
  }

  static JTabbedPane mkTabbedPane()
  {
    JTabbedPane tabs = new JTabbedPane();
    
    tabs.add("Button world!", mkButtonWorld());
    tabs.add("List world!", mkListWorld());
    tabs.add("Desktop world!", mkDesktopWorld());
    return tabs;
  }

  static JComponent mkSliders()
  {
    JSlider slider = new JSlider();
    slider.setPaintTrack(true);
    slider.setPaintTicks(true);
    slider.setMajorTickSpacing(30);
    slider.setInverted(false);
    JProgressBar progress = new JProgressBar();
    BoundedRangeModel model = new DefaultBoundedRangeModel(10, 1, 0, 100);
    progress.setModel(model);
    slider.setModel(model);
    JPanel panel = new JPanel();
    panel.setLayout(new GridLayout(1, 2));
    panel.add(slider);
    panel.add(progress);
    return panel;
  }

  public Demo()
  {
    frame = new JFrame("Swing Activity Board");
    frame.setJMenuBar(mkMenuBar());
    JComponent component = (JComponent) frame.getContentPane();
    component.setLayout(new BorderLayout());
    component.add(mkToolBar(), BorderLayout.NORTH);
    component.add(mkTabbedPane(), BorderLayout.CENTER);
    component.add(mkButtonBar(), BorderLayout.SOUTH);
    
    frame.pack();
    frame.show();
  }

  public static class LaterMain
    implements Runnable
  {
    public void run()
    {
      Demo demo = new Demo();      
    }
  }

  public static void main(String args[])
  {
    SwingUtilities.invokeLater(new LaterMain());
  }

  public static JCheckBox mkCheckbox(String label)
  {
    JCheckBox c = new JCheckBox(label);
    c.setFont(new Font("Luxi", Font.PLAIN, 14));
    return c;
  }

  public static JRadioButton mkRadio(String label)
  {
    JRadioButton c = new JRadioButton(label);
    c.setFont(new Font("Luxi", Font.PLAIN, 14));
    return c;
  }

  public static JList mkList(Object[] elts)
  {
    JList list = new JList(elts);
    list.setFont(new Font("Luxi", Font.PLAIN, 14));
    return list;
  }

  public static JTabbedPane mkTabs(String[] names)
  {
    JTabbedPane tabs = new JTabbedPane();
    for (int i = 0; i < names.length; ++i)
      {
        tabs.addTab(names[i], mkButton(names[i]));
      }
    return tabs;
  }
  

  public static JButton mkBigButton(String title)
  {
    JButton b = new JButton(title);
    b.setMargin(new Insets(5,5,5,5));
    b.setFont(new Font("Luxi", Font.PLAIN, 14));
    return b;
  }

  public static JToggleButton mkToggle(String title)
  {
    JToggleButton b = new JToggleButton(title);
    b.setMargin(new Insets(5,5,5,5));
    b.setFont(new Font("Luxi", Font.PLAIN, 14));
    return b;    
  }

  public static JPanel mkPanel(JComponent[] inners)
  {
    JPanel p = new JPanel();
    for (int i = 0; i < inners.length; ++i)
      {
        p.add(inners[i]);
      }
    return p;
  }

  public static JScrollBar mkScrollBar()
  {
    JScrollBar scrollbar = new JScrollBar();
    return scrollbar;
  }

  public static JPanel mkViewportBox(final JComponent inner)
  {
    final JViewport port = new JViewport();
    port.setView(inner);
    JButton left = mkBigButton("left");
    JButton right = mkBigButton("right");
    
    left.addActionListener(new ActionListener()
      {
        public void actionPerformed(ActionEvent e)
        {
          Point p = port.getViewPosition();
          port.setViewPosition(new Point(p.x - 10, p.y));
        }
      });

    right.addActionListener(new ActionListener()
      {
        public void actionPerformed(ActionEvent e)
        {
          Point p = port.getViewPosition();
          port.setViewPosition(new Point(p.x + 10, p.y));
        }
      });
 
    return mkPanel(new JComponent[] {port, left, right});
  }

  public static JPanel mkListPanel(Object[] elts)
  {
    final DefaultListModel mod = new DefaultListModel();
    final JList list1 = new JList(mod);
    final JList list2 = new JList(mod);

    list2.setSelectionModel(list1.getSelectionModel());
    for (int i = 0; i < elts.length; ++i)
      mod.addElement(elts[i]);
    list1.setCellRenderer(new LabelCellRenderer());
    list2.setCellRenderer(new CheckCellRenderer());

    JButton add = mkBigButton("add element");
    add.addActionListener(new ActionListener()
      {
        int i = 0;
        public void actionPerformed(ActionEvent e)
        {
          mod.addElement("new element " + i);
          ++i;
        }
      });

    JButton del = mkBigButton("delete selected");
    del.addActionListener(new ActionListener()
      {
        public void actionPerformed(ActionEvent e)
        {
          for (int i = 0; i < mod.getSize(); ++i)
            if (list1.isSelectedIndex(i))
              mod.remove(i);
        }
      });

    return mkPanel(new JComponent[] {list1, //mkScrollPane(list1), 
                                     list2, //mkScrollPane(list2), 
                                     mkPanel(new JComponent[] {add, del})});
  }


  public static JButton mkDisposerButton(final JFrame c)
  {
    JButton close = mkBigButton("Close");
    close.addActionListener(new ActionListener()
      {
        public void actionPerformed(ActionEvent e)
        {
          c.dispose();
        }
      });
    return close;
  }

  private static class PopUpAction
    implements ActionListener
  {
    private JComponent inner;
    private String name;

    PopUpAction(String n, JComponent i, JPanel p)
    {
      name = n;
      inner = i;

      JButton b = mkBigButton(name);
      b.addActionListener(this);
      p.add(b);
    }

    public void actionPerformed(ActionEvent e)
    {
      JFrame frame = new JFrame(name);
      frame.getContentPane().setLayout(new BorderLayout());
      frame.getContentPane().add(inner, BorderLayout.CENTER);
      frame.getContentPane().add(mkDisposerButton(frame), BorderLayout.SOUTH);
      frame.pack();
      frame.show();
    }
  }

  private JPanel mkButtonBar()
  {    
    JPanel panel = new JPanel ();
    panel.setLayout(new FlowLayout());

    new PopUpAction("Buttons",
		    mkPanel(new JComponent[]
			{mkBigButton("mango"), 
			 mkBigButton("guava"),
			 mkBigButton("lemon")}),
		    panel);
    
    new PopUpAction("Toggles",
		    mkToggle("cool and refreshing"),
		    panel);

    new PopUpAction("Checkbox",
		    mkCheckbox("ice cold"),
		    panel);

    new PopUpAction("Radio",
		    mkRadio("delicious"),
		    panel);

    new PopUpAction("Slider",
		    mkSliders(),
		    panel);

    new PopUpAction("List",
		    mkListPanel(new String[] { "hello",
					       "this",
					       "is",
					       "a",
					       "list"}),
		    panel);

    new PopUpAction("Scrollbar",
		    mkScrollBar(),
		    panel);

    new PopUpAction("Viewport",
		    mkViewportBox(mkBigButton("View Me!")),
		    panel);

    new PopUpAction("ScrollPane",
		    mkScrollPane(mkBigButton("Scroll Me!")),
		    panel);

    new PopUpAction("TabPane",
		    mkTabs(new String[] {"happy",
					 "sad",
					 "indifferent"}),
		    panel);

    JButton exitDisposer = mkDisposerButton(frame);
    panel.add(exitDisposer);

    return panel;
  }

}