1 /*

     2  * Copyright (c) 2007, 2016, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

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

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 package com.sun.swingset3.demos.list;

    24 

    25 import java.awt.*;

    26 import java.awt.event.ActionEvent;

    27 import java.awt.event.FocusAdapter;

    28 import java.awt.event.FocusEvent;

    29 import java.awt.event.FocusListener;

    30 import java.util.Vector;

    31 import javax.swing.*;

    32 

    33 import com.sun.swingset3.DemoProperties;

    34 import com.sun.swingset3.demos.ResourceManager;

    35 

    36 /**

    37  * List Demo. This demo shows that it is not always necessary to have an array

    38  * of objects as big as the size of the list stored.

    39  *

    40  * Indeed, in this example, there is no array kept for the list data, rather it

    41  * is generated on the fly as only those elements are needed.

    42  *

    43  * @version 1.17 11/17/05

    44  * @author Jeff Dinkins

    45  */

    46 @DemoProperties(

    47         value = "JList Demo",

    48         category = "Data",

    49         description = "Demonstrates JList, a component which supports display/editing of a data list",

    50         sourceFiles = {

    51             "com/sun/swingset3/demos/list/ListDemo.java",

    52             "com/sun/swingset3/demos/list/Permuter.java",

    53             "com/sun/swingset3/demos/ResourceManager.java",

    54             "com/sun/swingset3/demos/list/resources/ListDemo.properties",

    55             "com/sun/swingset3/demos/list/resources/images/blue.gif",

    56             "com/sun/swingset3/demos/list/resources/images/cyan.gif",

    57             "com/sun/swingset3/demos/list/resources/images/gray.gif",

    58             "com/sun/swingset3/demos/list/resources/images/green.gif",

    59             "com/sun/swingset3/demos/list/resources/images/ListDemo.gif",

    60             "com/sun/swingset3/demos/list/resources/images/magenta.gif",

    61             "com/sun/swingset3/demos/list/resources/images/red.gif",

    62             "com/sun/swingset3/demos/list/resources/images/yellow.gif"

    63         }

    64 )

    65 public final class ListDemo extends JPanel {

    66 

    67     private static final Dimension HGAP10 = new Dimension(10, 1);

    68     private static final Dimension VGAP10 = new Dimension(1, 10);

    69     private static final Dimension HGAP15 = new Dimension(15, 1);

    70     private static final Dimension HGAP30 = new Dimension(30, 1);

    71 

    72     private final ResourceManager resourceManager = new ResourceManager(this.getClass());

    73     public static final String DEMO_TITLE = ListDemo.class.getAnnotation(DemoProperties.class).value();

    74 

    75     private final JList<String> list;

    76 

    77     private JPanel prefixList;

    78     private JPanel suffixList;

    79 

    80     private Action prefixAction;

    81     private Action suffixAction;

    82 

    83     private final GeneratedListModel listModel;

    84 

    85     /**

    86      * main method allows us to run as a standalone demo.

    87      *

    88      * @param args

    89      */

    90     public static void main(String[] args) {

    91         JFrame frame = new JFrame(DEMO_TITLE);

    92 

    93         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    94         frame.getContentPane().add(new ListDemo());

    95         frame.setPreferredSize(new Dimension(800, 600));

    96         frame.pack();

    97         frame.setLocationRelativeTo(null);

    98         frame.setVisible(true);

    99     }

   100 

   101     /**

   102      * ListDemo Constructor

   103      */

   104     public ListDemo() {

   105         setLayout(new BorderLayout());

   106 

   107         loadImages();

   108 

   109         JLabel description = new JLabel(resourceManager.getString("ListDemo.description"));

   110         add(description, BorderLayout.NORTH);

   111 

   112         JPanel centerPanel = new JPanel();

   113         centerPanel.setLayout(new BoxLayout(centerPanel, BoxLayout.X_AXIS));

   114         centerPanel.add(Box.createRigidArea(HGAP10));

   115         add(centerPanel, BorderLayout.CENTER);

   116 

   117         JPanel listPanel = new JPanel();

   118         listPanel.setLayout(new BoxLayout(listPanel, BoxLayout.Y_AXIS));

   119         listPanel.add(Box.createRigidArea(VGAP10));

   120 

   121         centerPanel.add(listPanel);

   122         centerPanel.add(Box.createRigidArea(HGAP30));

   123 

   124         // Create the list

   125         list = new JList<>();

   126         list.setCellRenderer(new CompanyLogoListCellRenderer());

   127         listModel = new GeneratedListModel();

   128         list.setModel(listModel);

   129 

   130         // Set the preferred row count. This affects the preferredSize

   131         // of the JList when it's in a scrollpane.

   132         list.setVisibleRowCount(22);

   133 

   134         // Add list to a scrollpane

   135         JScrollPane scrollPane = new JScrollPane(list);

   136         listPanel.add(scrollPane);

   137         listPanel.add(Box.createRigidArea(VGAP10));

   138 

   139         // Add the control panel (holds the prefix/suffix list and prefix/suffix checkboxes)

   140         centerPanel.add(createControlPanel());

   141 

   142         // create prefixes and suffixes

   143         addPrefix("Tera", true);

   144         addPrefix("Micro", false);

   145         addPrefix("Southern", false);

   146         addPrefix("Net", true);

   147         addPrefix("YoYo", true);

   148         addPrefix("Northern", false);

   149         addPrefix("Tele", false);

   150         addPrefix("Eastern", false);

   151         addPrefix("Neo", false);

   152         addPrefix("Digi", false);

   153         addPrefix("National", false);

   154         addPrefix("Compu", true);

   155         addPrefix("Meta", true);

   156         addPrefix("Info", false);

   157         addPrefix("Western", false);

   158         addPrefix("Data", false);

   159         addPrefix("Atlantic", false);

   160         addPrefix("Advanced", false);

   161         addPrefix("Euro", false);

   162         addPrefix("Pacific", false);

   163         addPrefix("Mobile", false);

   164         addPrefix("In", false);

   165         addPrefix("Computa", false);

   166         addPrefix("Digital", false);

   167         addPrefix("Analog", false);

   168 

   169         addSuffix("Tech", true);

   170         addSuffix("Soft", true);

   171         addSuffix("Telecom", true);

   172         addSuffix("Solutions", false);

   173         addSuffix("Works", true);

   174         addSuffix("Dyne", false);

   175         addSuffix("Services", false);

   176         addSuffix("Vers", false);

   177         addSuffix("Devices", false);

   178         addSuffix("Software", false);

   179         addSuffix("Serv", false);

   180         addSuffix("Systems", true);

   181         addSuffix("Dynamics", true);

   182         addSuffix("Net", false);

   183         addSuffix("Sys", false);

   184         addSuffix("Computing", false);

   185         addSuffix("Scape", false);

   186         addSuffix("Com", false);

   187         addSuffix("Ware", false);

   188         addSuffix("Widgets", false);

   189         addSuffix("Media", false);

   190         addSuffix("Computer", false);

   191         addSuffix("Hardware", false);

   192         addSuffix("Gizmos", false);

   193         addSuffix("Concepts", false);

   194     }

   195 

   196     private JPanel createControlPanel() {

   197         JPanel controlPanel = new JPanel() {

   198             private final Insets insets = new Insets(0, 4, 10, 10);

   199 

   200             @Override

   201             public Insets getInsets() {

   202                 return insets;

   203             }

   204         };

   205         controlPanel.setLayout(new BoxLayout(controlPanel, BoxLayout.X_AXIS));

   206 

   207         JPanel prefixPanel = new JPanel();

   208         prefixPanel.setLayout(new BoxLayout(prefixPanel, BoxLayout.Y_AXIS));

   209         prefixPanel.add(new JLabel(resourceManager.getString("ListDemo.prefixes")));

   210 

   211         JPanel suffixPanel = new JPanel();

   212         suffixPanel.setLayout(new BoxLayout(suffixPanel, BoxLayout.Y_AXIS));

   213         suffixPanel.add(new JLabel(resourceManager.getString("ListDemo.suffixes")));

   214 

   215         prefixList = new JPanel() {

   216             private final Insets insets = new Insets(0, 4, 0, 0);

   217 

   218             @Override

   219             public Insets getInsets() {

   220                 return insets;

   221             }

   222         };

   223         prefixList.setLayout(new BoxLayout(prefixList, BoxLayout.Y_AXIS));

   224         JScrollPane scrollPane = new JScrollPane(prefixList);

   225         scrollPane.getVerticalScrollBar().setUnitIncrement(10);

   226         prefixPanel.add(scrollPane);

   227         prefixPanel.add(Box.createRigidArea(HGAP10));

   228 

   229         suffixList = new JPanel() {

   230             private final Insets insets = new Insets(0, 4, 0, 0);

   231 

   232             @Override

   233             public Insets getInsets() {

   234                 return insets;

   235             }

   236         };

   237         suffixList.setLayout(new BoxLayout(suffixList, BoxLayout.Y_AXIS));

   238         scrollPane = new JScrollPane(suffixList);

   239         scrollPane.getVerticalScrollBar().setUnitIncrement(10);

   240         suffixPanel.add(scrollPane);

   241         suffixPanel.add(Box.createRigidArea(HGAP10));

   242 

   243         controlPanel.add(prefixPanel);

   244         controlPanel.add(Box.createRigidArea(HGAP15));

   245         controlPanel.add(suffixPanel);

   246         return controlPanel;

   247     }

   248 

   249     private final FocusListener listFocusListener = new FocusAdapter() {

   250         @Override

   251         public void focusGained(FocusEvent e) {

   252             JComponent c = (JComponent) e.getComponent();

   253             c.scrollRectToVisible(new Rectangle(0, 0, c.getWidth(), c.getHeight()));

   254         }

   255     };

   256 

   257     private void addPrefix(String prefix, boolean selected) {

   258         if (prefixAction == null) {

   259             prefixAction = new UpdatePrefixListAction(listModel);

   260         }

   261         final JCheckBox cb = (JCheckBox) prefixList.add(new JCheckBox(prefix));

   262         cb.setSelected(selected);

   263         cb.addActionListener(prefixAction);

   264         if (selected) {

   265             listModel.addPrefix(prefix);

   266         }

   267         cb.addFocusListener(listFocusListener);

   268     }

   269 

   270     private void addSuffix(String suffix, boolean selected) {

   271         if (suffixAction == null) {

   272             suffixAction = new UpdateSuffixListAction(listModel);

   273         }

   274         final JCheckBox cb = (JCheckBox) suffixList.add(new JCheckBox(suffix));

   275         cb.setSelected(selected);

   276         cb.addActionListener(suffixAction);

   277         if (selected) {

   278             listModel.addSuffix(suffix);

   279         }

   280         cb.addFocusListener(listFocusListener);

   281     }

   282 

   283     private static class UpdatePrefixListAction extends AbstractAction {

   284 

   285         private final GeneratedListModel listModel;

   286 

   287         protected UpdatePrefixListAction(GeneratedListModel listModel) {

   288             this.listModel = listModel;

   289         }

   290 

   291         @Override

   292         public void actionPerformed(ActionEvent e) {

   293             JCheckBox cb = (JCheckBox) e.getSource();

   294             if (cb.isSelected()) {

   295                 listModel.addPrefix(cb.getText());

   296             } else {

   297                 listModel.removePrefix(cb.getText());

   298             }

   299         }

   300     }

   301 

   302     private static class UpdateSuffixListAction extends AbstractAction {

   303 

   304         private final GeneratedListModel listModel;

   305 

   306         protected UpdateSuffixListAction(GeneratedListModel listModel) {

   307             this.listModel = listModel;

   308         }

   309 

   310         @Override

   311         public void actionPerformed(ActionEvent e) {

   312             JCheckBox cb = (JCheckBox) e.getSource();

   313             if (cb.isSelected()) {

   314                 listModel.addSuffix(cb.getText());

   315             } else {

   316                 listModel.removeSuffix(cb.getText());

   317             }

   318         }

   319     }

   320 

   321     private static class GeneratedListModel extends AbstractListModel<String> {

   322 

   323         private Permuter permuter;

   324 

   325         private final Vector<String> prefix = new Vector<>();

   326         private final Vector<String> suffix = new Vector<>();

   327 

   328         private void update() {

   329             permuter = new Permuter(getSize());

   330             fireContentsChanged(this, 0, getSize());

   331         }

   332 

   333         public void addPrefix(String s) {

   334             if (!prefix.contains(s)) {

   335                 prefix.addElement(s);

   336                 update();

   337             }

   338         }

   339 

   340         public void removePrefix(String s) {

   341             prefix.removeElement(s);

   342             update();

   343         }

   344 

   345         public void addSuffix(String s) {

   346             if (!suffix.contains(s)) {

   347                 suffix.addElement(s);

   348                 update();

   349             }

   350         }

   351 

   352         public void removeSuffix(String s) {

   353             suffix.removeElement(s);

   354             update();

   355         }

   356 

   357         @Override

   358         public int getSize() {

   359             return prefix.size() * suffix.size();

   360         }

   361 

   362         @Override

   363         public String getElementAt(int index) {

   364             if (permuter == null) {

   365                 update();

   366             }

   367             // morph the index to another int -- this has the benefit of

   368             // causing the list to look random.

   369             int j = permuter.map(index);

   370             int ps = prefix.size();

   371             int ss = suffix.size();

   372             return prefix.elementAt(j % ps) + suffix.elementAt((j / ps) % ss);

   373         }

   374     }

   375 

   376     private final ImageIcon[] images = new ImageIcon[7];

   377 

   378     void loadImages() {

   379         images[0] = resourceManager.createImageIcon("red.gif", resourceManager.getString("ListDemo.red"));

   380         images[1] = resourceManager.createImageIcon("blue.gif", resourceManager.getString("ListDemo.blue"));

   381         images[2] = resourceManager.createImageIcon("yellow.gif", resourceManager.getString("ListDemo.yellow"));

   382         images[3] = resourceManager.createImageIcon("green.gif", resourceManager.getString("ListDemo.green"));

   383         images[4] = resourceManager.createImageIcon("gray.gif", resourceManager.getString("ListDemo.gray"));

   384         images[5] = resourceManager.createImageIcon("cyan.gif", resourceManager.getString("ListDemo.cyan"));

   385         images[6] = resourceManager.createImageIcon("magenta.gif", resourceManager.getString("ListDemo.magenta"));

   386     }

   387 

   388     private class CompanyLogoListCellRenderer extends DefaultListCellRenderer {

   389 

   390         @Override

   391         public Component getListCellRendererComponent(

   392                 JList<?> list,

   393                 Object value,

   394                 int index,

   395                 boolean isSelected,

   396                 boolean cellHasFocus) {

   397             Component retValue = super.getListCellRendererComponent(

   398                     list, value, index, isSelected, cellHasFocus

   399             );

   400             setIcon(images[index % 7]);

   401             return retValue;

   402         }

   403     }

   404 }