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/*
*
* Copyright (c) 2007, 2021, Oracle and/or its affiliates. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of Oracle nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
import javax.swing.AbstractAction;
import javax.swing.AbstractListModel;
import javax.swing.Action;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.DefaultListCellRenderer;
import javax.swing.ImageIcon;
import javax.swing.JCheckBox;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Insets;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.util.Vector;
/**
* 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.
*
* @author Jeff Dinkins
*/
public class ListDemo extends DemoModule {
JList<String> list;
JPanel prefixList;
JPanel suffixList;
Action prefixAction;
Action suffixAction;
GeneratedListModel listModel;
Vector<JCheckBox> checkboxes = new Vector<>();
/**
* main method allows us to run as a standalone demo.
*/
public static void main(String[] args) {
ListDemo demo = new ListDemo(null);
demo.mainImpl();
}
/**
* ListDemo Constructor
*/
public ListDemo(SwingSet2 swingset) {
super(swingset, "ListDemo", "toolbar/JList.gif");
loadImages();
JLabel description = new JLabel(getString("ListDemo.description"));
getDemoPanel().add(description, BorderLayout.NORTH);
JPanel centerPanel = new JPanel();
centerPanel.setLayout(new BoxLayout(centerPanel, BoxLayout.X_AXIS));
centerPanel.add(Box.createRigidArea(HGAP10));
getDemoPanel().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(this);
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);
}
void updateDragEnabled(boolean dragEnabled) {
list.setDragEnabled(dragEnabled);
}
public JPanel createControlPanel() {
JPanel controlPanel = new JPanel() {
Insets insets = new Insets(0, 4, 10, 10);
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(getString("ListDemo.prefixes")));
JPanel suffixPanel = new JPanel();
suffixPanel.setLayout(new BoxLayout(suffixPanel, BoxLayout.Y_AXIS));
suffixPanel.add(new JLabel(getString("ListDemo.suffixes")));
prefixList = new JPanel() {
Insets insets = new Insets(0, 4, 0, 0);
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() {
Insets insets = new Insets(0, 4, 0, 0);
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 FocusListener listFocusListener = new FocusAdapter() {
public void focusGained(FocusEvent e) {
JComponent c = (JComponent)e.getComponent();
c.scrollRectToVisible(new Rectangle(0, 0, c.getWidth(), c.getHeight()));
}
};
public void addPrefix(String prefix, boolean selected) {
if(prefixAction == null) {
prefixAction = new UpdatePrefixListAction(listModel);
}
final JCheckBox cb = (JCheckBox) prefixList.add(new JCheckBox(prefix));
checkboxes.addElement(cb);
cb.setSelected(selected);
cb.addActionListener(prefixAction);
if(selected) {
listModel.addPrefix(prefix);
}
cb.addFocusListener(listFocusListener);
}
public void addSuffix(String suffix, boolean selected) {
if(suffixAction == null) {
suffixAction = new UpdateSuffixListAction(listModel);
}
final JCheckBox cb = (JCheckBox) suffixList.add(new JCheckBox(suffix));
checkboxes.addElement(cb);
cb.setSelected(selected);
cb.addActionListener(suffixAction);
if(selected) {
listModel.addSuffix(suffix);
}
cb.addFocusListener(listFocusListener);
}
class UpdatePrefixListAction extends AbstractAction {
GeneratedListModel listModel;
protected UpdatePrefixListAction(GeneratedListModel listModel) {
this.listModel = listModel;
}
public void actionPerformed(ActionEvent e) {
JCheckBox cb = (JCheckBox) e.getSource();
if(cb.isSelected()) {
listModel.addPrefix(cb.getText());
} else {
listModel.removePrefix(cb.getText());
}
}
}
class UpdateSuffixListAction extends AbstractAction {
GeneratedListModel listModel;
protected UpdateSuffixListAction(GeneratedListModel listModel) {
this.listModel = listModel;
}
public void actionPerformed(ActionEvent e) {
JCheckBox cb = (JCheckBox) e.getSource();
if(cb.isSelected()) {
listModel.addSuffix(cb.getText());
} else {
listModel.removeSuffix(cb.getText());
}
}
}
class GeneratedListModel extends AbstractListModel<String> {
ListDemo demo;
Permuter permuter;
public Vector<String> prefix = new Vector<>();
public Vector<String> suffix = new Vector<>();
public GeneratedListModel (ListDemo demo) {
this.demo = demo;
}
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();
}
public int getSize() {
return prefix.size() * suffix.size();
}
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 (String) prefix.elementAt(j%ps) + (String) suffix.elementAt((j/ps)%ss);
}
}
ImageIcon[] images = new ImageIcon[7];
void loadImages() {
images[0] = createImageIcon("list/red.gif", getString("ListDemo.red"));
images[1] = createImageIcon("list/blue.gif", getString("ListDemo.blue"));
images[2] = createImageIcon("list/yellow.gif", getString("ListDemo.yellow"));
images[3] = createImageIcon("list/green.gif", getString("ListDemo.green"));
images[4] = createImageIcon("list/gray.gif", getString("ListDemo.gray"));
images[5] = createImageIcon("list/cyan.gif", getString("ListDemo.cyan"));
images[6] = createImageIcon("list/magenta.gif", getString("ListDemo.magenta"));
}
class CompanyLogoListCellRenderer extends DefaultListCellRenderer {
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;
}
}
}
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