JTextField with drop down list box

have a look at this code and adapt it to your needs:

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.KeyAdapter;

import java.awt.event.KeyEvent;

import javax.swing.JComponent;

import javax.swing.JFrame;

import javax.swing.JMenuItem;

import javax.swing.JPanel;

import javax.swing.JPopupMenu;

import javax.swing.JTextField;

public class SuggestListProject extends JPanel{

private JTextField text;

final JPopupMenu menu = new JPopupMenu();

public SuggestListProject(){

setLayout(new GridLayout(2, 1));

text = new JTextField(50);

text.addKeyListener(new KeyAdapter(){

@Override

public void keyReleased(KeyEvent e) {

redrawSuggestionList();

}

});

add(text);

add(menu);

}

private void redrawSuggestionList(){

text.requestFocus();

menu.setVisible(false);

menu.removeAll();

String query = text.getText();

if(query!=null&&query.trim().length()>0){

for (int i = 0; i < 3; i++) {

JMenuItem item = new JMenuItem(query+" : "+i);

item.addActionListener(new CustomActionListener(i));

menu.add(item);

}

}

menu.show(text, text.getLocation().x-text.getWidth(), text.getLocation().y+text.getHeight());

text.requestFocus();

}

class CustomActionListener implements ActionListener{

private int index;

public CustomActionListener(int index){

this.index=index;

}

public void actionPerformed(ActionEvent e) {

System.out.println(" Index : "+index);

}

}

private static void createAndShowGUI() {

// Create and set up the window.

JFrame frame = new JFrame("SuggestList");

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

// Create and set up the content pane.

JComponent newContentPane = new SuggestListProject();

newContentPane.setOpaque(true); // content panes must be opaque

frame.setContentPane(newContentPane);

// Display the window.

frame.pack();

frame.setVisible(true);

}

public static void main(String[] args) {

// Schedule a job for the event-dispatching thread:

// creating and showing this application's GUI.

javax.swing.SwingUtilities.invokeLater(new Runnable() {

public void run() {

createAndShowGUI();

}

});

}

}

java_2006a at 2007-7-12 3:04:47 >