/*
* Copyright (c) 2007, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
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*/
package com.sun.swingset3.demos.list;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.util.Vector;
import javax.swing.*;
import com.sun.swingset3.DemoProperties;
import com.sun.swingset3.demos.ResourceManager;
/**
* List Demo. This demo shows that it is not always necessary to have an array
* of objects as big as the size of the list stored.
*
* Indeed, in this example, there is no array kept for the list data, rather it
* is generated on the fly as only those elements are needed.
*
* @version 1.17 11/17/05
* @author Jeff Dinkins
*/
@DemoProperties(
value = "JList Demo",
category = "Data",
description = "Demonstrates JList, a component which supports display/editing of a data list",
sourceFiles = {
"com/sun/swingset3/demos/list/ListDemo.java",
"com/sun/swingset3/demos/list/Permuter.java",
"com/sun/swingset3/demos/ResourceManager.java",
"com/sun/swingset3/demos/list/resources/ListDemo.properties",
"com/sun/swingset3/demos/list/resources/images/blue.gif",
"com/sun/swingset3/demos/list/resources/images/cyan.gif",
"com/sun/swingset3/demos/list/resources/images/gray.gif",
"com/sun/swingset3/demos/list/resources/images/green.gif",
"com/sun/swingset3/demos/list/resources/images/ListDemo.gif",
"com/sun/swingset3/demos/list/resources/images/magenta.gif",
"com/sun/swingset3/demos/list/resources/images/red.gif",
"com/sun/swingset3/demos/list/resources/images/yellow.gif"
}
)
public final class ListDemo extends JPanel {
private static final Dimension HGAP10 = new Dimension(10, 1);
private static final Dimension VGAP10 = new Dimension(1, 10);
private static final Dimension HGAP15 = new Dimension(15, 1);
private static final Dimension HGAP30 = new Dimension(30, 1);
private final ResourceManager resourceManager = new ResourceManager(this.getClass());
public static final String DEMO_TITLE = ListDemo.class.getAnnotation(DemoProperties.class).value();
private final JList<String> list;
private JPanel prefixList;
private JPanel suffixList;
private Action prefixAction;
private Action suffixAction;
private final GeneratedListModel listModel;
/**
* main method allows us to run as a standalone demo.
*
* @param args
*/
public static void main(String[] args) {
JFrame frame = new JFrame(DEMO_TITLE);
frame.getContentPane().add(new ListDemo());
frame.setPreferredSize(new Dimension(800, 600));
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
/**
* ListDemo Constructor
*/
public ListDemo() {
setLayout(new BorderLayout());
loadImages();
JLabel description = new JLabel(resourceManager.getString("ListDemo.description"));
add(description, BorderLayout.NORTH);
JPanel centerPanel = new JPanel();
centerPanel.setLayout(new BoxLayout(centerPanel, BoxLayout.X_AXIS));
centerPanel.add(Box.createRigidArea(HGAP10));
add(centerPanel, BorderLayout.CENTER);
JPanel listPanel = new JPanel();
listPanel.setLayout(new BoxLayout(listPanel, BoxLayout.Y_AXIS));
listPanel.add(Box.createRigidArea(VGAP10));
centerPanel.add(listPanel);
centerPanel.add(Box.createRigidArea(HGAP30));
// Create the list
list = new JList<>();
list.setCellRenderer(new CompanyLogoListCellRenderer());
listModel = new GeneratedListModel();
list.setModel(listModel);
// Set the preferred row count. This affects the preferredSize
// of the JList when it's in a scrollpane.
list.setVisibleRowCount(22);
// Add list to a scrollpane
JScrollPane scrollPane = new JScrollPane(list);
listPanel.add(scrollPane);
listPanel.add(Box.createRigidArea(VGAP10));
// Add the control panel (holds the prefix/suffix list and prefix/suffix checkboxes)
centerPanel.add(createControlPanel());
// create prefixes and suffixes
addPrefix("Tera", true);
addPrefix("Micro", false);
addPrefix("Southern", false);
addPrefix("Net", true);
addPrefix("YoYo", true);
addPrefix("Northern", false);
addPrefix("Tele", false);
addPrefix("Eastern", false);
addPrefix("Neo", false);
addPrefix("Digi", false);
addPrefix("National", false);
addPrefix("Compu", true);
addPrefix("Meta", true);
addPrefix("Info", false);
addPrefix("Western", false);
addPrefix("Data", false);
addPrefix("Atlantic", false);
addPrefix("Advanced", false);
addPrefix("Euro", false);
addPrefix("Pacific", false);
addPrefix("Mobile", false);
addPrefix("In", false);
addPrefix("Computa", false);
addPrefix("Digital", false);
addPrefix("Analog", false);
addSuffix("Tech", true);
addSuffix("Soft", true);
addSuffix("Telecom", true);
addSuffix("Solutions", false);
addSuffix("Works", true);
addSuffix("Dyne", false);
addSuffix("Services", false);
addSuffix("Vers", false);
addSuffix("Devices", false);
addSuffix("Software", false);
addSuffix("Serv", false);
addSuffix("Systems", true);
addSuffix("Dynamics", true);
addSuffix("Net", false);
addSuffix("Sys", false);
addSuffix("Computing", false);
addSuffix("Scape", false);
addSuffix("Com", false);
addSuffix("Ware", false);
addSuffix("Widgets", false);
addSuffix("Media", false);
addSuffix("Computer", false);
addSuffix("Hardware", false);
addSuffix("Gizmos", false);
addSuffix("Concepts", false);
}
private JPanel createControlPanel() {
JPanel controlPanel = new JPanel() {
private final Insets insets = new Insets(0, 4, 10, 10);
@Override
public Insets getInsets() {
return insets;
}
};
controlPanel.setLayout(new BoxLayout(controlPanel, BoxLayout.X_AXIS));
JPanel prefixPanel = new JPanel();
prefixPanel.setLayout(new BoxLayout(prefixPanel, BoxLayout.Y_AXIS));
prefixPanel.add(new JLabel(resourceManager.getString("ListDemo.prefixes")));
JPanel suffixPanel = new JPanel();
suffixPanel.setLayout(new BoxLayout(suffixPanel, BoxLayout.Y_AXIS));
suffixPanel.add(new JLabel(resourceManager.getString("ListDemo.suffixes")));
prefixList = new JPanel() {
private final Insets insets = new Insets(0, 4, 0, 0);
@Override
public Insets getInsets() {
return insets;
}
};
prefixList.setLayout(new BoxLayout(prefixList, BoxLayout.Y_AXIS));
JScrollPane scrollPane = new JScrollPane(prefixList);
scrollPane.getVerticalScrollBar().setUnitIncrement(10);
prefixPanel.add(scrollPane);
prefixPanel.add(Box.createRigidArea(HGAP10));
suffixList = new JPanel() {
private final Insets insets = new Insets(0, 4, 0, 0);
@Override
public Insets getInsets() {
return insets;
}
};
suffixList.setLayout(new BoxLayout(suffixList, BoxLayout.Y_AXIS));
scrollPane = new JScrollPane(suffixList);
scrollPane.getVerticalScrollBar().setUnitIncrement(10);
suffixPanel.add(scrollPane);
suffixPanel.add(Box.createRigidArea(HGAP10));
controlPanel.add(prefixPanel);
controlPanel.add(Box.createRigidArea(HGAP15));
controlPanel.add(suffixPanel);
return controlPanel;
}
private final FocusListener listFocusListener = new FocusAdapter() {
@Override
public void focusGained(FocusEvent e) {
JComponent c = (JComponent) e.getComponent();
c.scrollRectToVisible(new Rectangle(0, 0, c.getWidth(), c.getHeight()));
}
};
private void addPrefix(String prefix, boolean selected) {
if (prefixAction == null) {
prefixAction = new UpdatePrefixListAction(listModel);
}
final JCheckBox cb = (JCheckBox) prefixList.add(new JCheckBox(prefix));
cb.setSelected(selected);
cb.addActionListener(prefixAction);
if (selected) {
listModel.addPrefix(prefix);
}
cb.addFocusListener(listFocusListener);
}
private void addSuffix(String suffix, boolean selected) {
if (suffixAction == null) {
suffixAction = new UpdateSuffixListAction(listModel);
}
final JCheckBox cb = (JCheckBox) suffixList.add(new JCheckBox(suffix));
cb.setSelected(selected);
cb.addActionListener(suffixAction);
if (selected) {
listModel.addSuffix(suffix);
}
cb.addFocusListener(listFocusListener);
}
private static class UpdatePrefixListAction extends AbstractAction {
private final GeneratedListModel listModel;
protected UpdatePrefixListAction(GeneratedListModel listModel) {
this.listModel = listModel;
}
@Override
public void actionPerformed(ActionEvent e) {
JCheckBox cb = (JCheckBox) e.getSource();
if (cb.isSelected()) {
listModel.addPrefix(cb.getText());
} else {
listModel.removePrefix(cb.getText());
}
}
}
private static class UpdateSuffixListAction extends AbstractAction {
private final GeneratedListModel listModel;
protected UpdateSuffixListAction(GeneratedListModel listModel) {
this.listModel = listModel;
}
@Override
public void actionPerformed(ActionEvent e) {
JCheckBox cb = (JCheckBox) e.getSource();
if (cb.isSelected()) {
listModel.addSuffix(cb.getText());
} else {
listModel.removeSuffix(cb.getText());
}
}
}
private static class GeneratedListModel extends AbstractListModel<String> {
private Permuter permuter;
private final Vector<String> prefix = new Vector<>();
private final Vector<String> suffix = new Vector<>();
private void update() {
permuter = new Permuter(getSize());
fireContentsChanged(this, 0, getSize());
}
public void addPrefix(String s) {
if (!prefix.contains(s)) {
prefix.addElement(s);
update();
}
}
public void removePrefix(String s) {
prefix.removeElement(s);
update();
}
public void addSuffix(String s) {
if (!suffix.contains(s)) {
suffix.addElement(s);
update();
}
}
public void removeSuffix(String s) {
suffix.removeElement(s);
update();
}
@Override
public int getSize() {
return prefix.size() * suffix.size();
}
@Override
public String getElementAt(int index) {
if (permuter == null) {
update();
}
// morph the index to another int -- this has the benefit of
// causing the list to look random.
int j = permuter.map(index);
int ps = prefix.size();
int ss = suffix.size();
return prefix.elementAt(j % ps) + suffix.elementAt((j / ps) % ss);
}
}
private final ImageIcon[] images = new ImageIcon[7];
void loadImages() {
images[0] = resourceManager.createImageIcon("red.gif", resourceManager.getString("ListDemo.red"));
images[1] = resourceManager.createImageIcon("blue.gif", resourceManager.getString("ListDemo.blue"));
images[2] = resourceManager.createImageIcon("yellow.gif", resourceManager.getString("ListDemo.yellow"));
images[3] = resourceManager.createImageIcon("green.gif", resourceManager.getString("ListDemo.green"));
images[4] = resourceManager.createImageIcon("gray.gif", resourceManager.getString("ListDemo.gray"));
images[5] = resourceManager.createImageIcon("cyan.gif", resourceManager.getString("ListDemo.cyan"));
images[6] = resourceManager.createImageIcon("magenta.gif", resourceManager.getString("ListDemo.magenta"));
}
private class CompanyLogoListCellRenderer extends DefaultListCellRenderer {
@Override
public Component getListCellRendererComponent(
JList<?> list,
Object value,
int index,
boolean isSelected,
boolean cellHasFocus) {
Component retValue = super.getListCellRendererComponent(
list, value, index, isSelected, cellHasFocus
);
setIcon(images[index % 7]);
return retValue;
}
}
}