old-autovect-branch/libjava/classpath/examples/gnu/classpath/examples/swing/ScrollBarDemo.java

   1 /* ScrollBarDemo.java -- An example showing scroll bars in Swing.
   2    Copyright (C) 2005,  Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath examples.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20 */
  21
  22
  23 package gnu.classpath.examples.swing;
  24
  25 import java.awt.BorderLayout;
  26 import java.awt.GridLayout;
  27 import java.awt.event.ActionEvent;
  28 import java.awt.event.ActionListener;
  29
  30 import javax.swing.JButton;
  31 import javax.swing.JFrame;
  32 import javax.swing.JPanel;
  33 import javax.swing.JScrollBar;
  34
  35 /**
  36  * A simple scroll bar demo showing various scroll bars in different states.
  37  */
  38 public class ScrollBarDemo
  39   extends JFrame
  40   implements ActionListener
  41 {
  42
  43   /**
  44    * Creates a new demo instance.
  45    *
  46    * @param title  the frame title.
  47    */
  48   public ScrollBarDemo(String title)
  49   {
  50     super(title);
  51     JPanel content = createContent();
  52     JPanel closePanel = new JPanel();
  53     JButton closeButton = new JButton("Close");
  54     closeButton.setActionCommand("CLOSE");
  55     closeButton.addActionListener(this);
  56     closePanel.add(closeButton);
  57     content.add(closePanel, BorderLayout.SOUTH);
  58     getContentPane().add(content);
  59   }
  60
  61   /**
  62    * Returns a panel with the demo content.  The panel
  63    * uses a BorderLayout(), and the BorderLayout.SOUTH area
  64    * is empty, to allow callers to add controls to the
  65    * bottom of the panel if they want to (a close button is
  66    * added if this demo is being run as a standalone demo).
  67    */
  68   JPanel createContent()
  69   {
  70     JPanel content = new JPanel(new BorderLayout());
  71     JPanel panel = createScrollBarPanel();
  72     content.add(panel);
  73     return content;
  74   }
  75
  76   private JPanel createScrollBarPanel()
  77   {
  78     JPanel panel = new JPanel(new BorderLayout());
  79
  80     JPanel horizontalPanel = new JPanel();
  81
  82     JScrollBar scroll1a = new JScrollBar(JScrollBar.HORIZONTAL);
  83     JScrollBar scroll1b = new JScrollBar(JScrollBar.HORIZONTAL);
  84     scroll1b.setEnabled(false);
  85     JScrollBar scroll1c = new JScrollBar(JScrollBar.HORIZONTAL);
  86     scroll1c.putClientProperty("JScrollBar.isFreeStanding", Boolean.FALSE);
  87     JScrollBar scroll1d = new JScrollBar(JScrollBar.HORIZONTAL);
  88     scroll1d.putClientProperty("JScrollBar.isFreeStanding", Boolean.FALSE);
  89     scroll1d.setEnabled(false);
  90     horizontalPanel.add(scroll1a);
  91     horizontalPanel.add(scroll1b);
  92     horizontalPanel.add(scroll1c);
  93     horizontalPanel.add(scroll1d);
  94
  95     panel.add(horizontalPanel, BorderLayout.NORTH);
  96
  97     JPanel verticalPanel = new JPanel();
  98     verticalPanel.setLayout(new GridLayout(1, 7));
  99
 100     JScrollBar scroll2a = new JScrollBar(JScrollBar.VERTICAL);
 101     JScrollBar scroll2b = new JScrollBar(JScrollBar.VERTICAL);
 102     scroll2b.setEnabled(false);
 103     JScrollBar scroll2c = new JScrollBar(JScrollBar.VERTICAL);
 104     scroll2c.putClientProperty("JScrollBar.isFreeStanding", Boolean.FALSE);
 105     JScrollBar scroll2d = new JScrollBar(JScrollBar.VERTICAL);
 106     scroll2d.setEnabled(false);
 107     scroll2d.putClientProperty("JScrollBar.isFreeStanding", Boolean.FALSE);
 108
 109     verticalPanel.add(scroll2a);
 110     verticalPanel.add(new JPanel());
 111     verticalPanel.add(scroll2b);
 112     verticalPanel.add(new JPanel());
 113     verticalPanel.add(scroll2c);
 114     verticalPanel.add(new JPanel());
 115     verticalPanel.add(scroll2d);
 116
 117     panel.add(verticalPanel, BorderLayout.EAST);
 118
 119     JPanel centerPanel = new JPanel(new GridLayout(1, 2));
 120     centerPanel.add(new JScrollBar(JScrollBar.HORIZONTAL));
 121     centerPanel.add(new JScrollBar(JScrollBar.VERTICAL));
 122     panel.add(centerPanel);
 123     return panel;
 124   }
 125
 126   public void actionPerformed(ActionEvent e)
 127   {
 128     if (e.getActionCommand().equals("CLOSE"))
 129     {
 130       System.exit(0);
 131     }
 132   }
 133
 134   public static void main(String[] args)
 135   {
 136     ScrollBarDemo app = new ScrollBarDemo("ScrollBar Demo");
 137     app.pack();
 138     app.setVisible(true);
 139   }
 140
 141 }