/*
*
* 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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