import java.awt.BorderLayout;

import java.awt.Component;

import java.awt.GridLayout;

import java.awt.Rectangle;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.io.Serializable;

import javax.swing.JButton;

import javax.swing.JCheckBox;

import javax.swing.JFrame;

import javax.swing.JList;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.ListCellRenderer;

import javax.swing.ListModel;

import javax.swing.ListSelectionModel;

import javax.swing.UIManager;

import javax.swing.border.EmptyBorder;

public class JFrameTest extends JFrame {

class CheckableItem implements Serializable {

/**

*

*/

private static final long serialVersionUID = 1L;

private boolean isSelected;

private final String str;

public CheckableItem(final String str) {

this.str = str;

isSelected = false;

}

public boolean isSelected() {

return isSelected;

}

public void setSelected(final boolean b) {

isSelected = b;

}

@Override

public String toString() {

return str;

}

}

class CheckListRenderer extends JCheckBox implements

ListCellRenderer<CheckableItem> {

/**

*

*/

private static final long serialVersionUID = 1L;

public CheckListRenderer() {

setBackground(UIManager.getColor("List.textBackground"));

setForeground(UIManager.getColor("List.textForeground"));

}

@Override

public Component getListCellRendererComponent(

final JList<? extends CheckableItem> list,

final CheckableItem value, final int index,

final boolean isSelected, final boolean hasFocus) {

setEnabled(list.isEnabled());

setSelected(value.isSelected());

setFont(list.getFont());

setText(value.toString());

return this;

}

}

/**

*

*/

private static final long serialVersionUID = 1L;

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

final JFrameTest frame = new JFrameTest();

frame.addWindowListener(new WindowAdapter() {

@Override

public void windowClosing(final WindowEvent e) {

System.exit(0);

}

});

frame.setSize(300, 200);

frame.setVisible(true);

}

public JFrameTest() {

super("CheckList Example");

final String[] strs = { "swing", "home", "basic", "metal", "JList" };

final JList<CheckableItem> list = new JList<CheckableItem>(

createData(strs));

list.setCellRenderer(new CheckListRenderer());

list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

list.setBorder(new EmptyBorder(0, 4, 0, 0));

list.addMouseListener(new MouseAdapter() {

@Override

public void mouseClicked(final MouseEvent e) {

final int index = list.locationToIndex(e.getPoint());

final CheckableItem item = list.getModel().getElementAt(index);

item.setSelected(!item.isSelected());

final Rectangle rect = list.getCellBounds(index, index);

list.repaint(rect);

}

});

final JScrollPane sp = new JScrollPane(list);

final JTextArea textArea = new JTextArea(3, 10);

final JScrollPane textPanel = new JScrollPane(textArea);

final JButton printButton = new JButton("print");

printButton.addActionListener(new ActionListener() {

@Override

public void actionPerformed(final ActionEvent e) {

final ListModel<CheckableItem> model = list.getModel();

final int n = model.getSize();

for (int i = 0; i < n; i++) {

final CheckableItem item = model.getElementAt(i);

if (item.isSelected()) {

textArea.append(item.toString());

textArea.append(System.getProperty("line.separator"));

}

}

}

});

final JButton clearButton = new JButton("clear");

clearButton.addActionListener(new ActionListener() {

@Override

public void actionPerformed(final ActionEvent e) {

textArea.setText("");

}

});

final JPanel panel = new JPanel(new GridLayout(2, 1));

panel.add(printButton);

panel.add(clearButton);

getContentPane().add(sp, BorderLayout.CENTER);

getContentPane().add(panel, BorderLayout.EAST);

getContentPane().add(textPanel, BorderLayout.SOUTH);

}

private CheckableItem[] createData(final String[] strs) {

final int n = strs.length;

final CheckableItem[] items = new CheckableItem[n];

for (int i = 0; i < n; i++) {

items[i] = new CheckableItem(strs[i]);

}

return items;

}

}