ComboBox

[mamta81]

hi all ,
I have a comboBox .whenever i click on it the
dropdownlist shows up but on clicking on any item in the list the
clicked item gets selected and the list disappears.I want the list to
remain so that i can scroll down through the lictby clicking on any
alphabet.
for example suppose i want to see all the items starting with letter
C ,only the first item starting with C gets selected and the drop down
disappears.i should be able to scroll through all the items starting
with C in the dropdown of the combobox.

Please help

[tomaszewski.p]

mamta81 napisał(a):

Try this:

import java.awt.BorderLayout;

import java.awt.event.MouseAdapter;
import java.awt.event.MouseListener;

import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;

import javax.swing.plaf.basic.BasicComboBoxUI;
import javax.swing.plaf.basic.BasicComboPopup;
import javax.swing.plaf.basic.ComboPopup;

public class Test {

static class ComboPanel extends JPanel {
public ComboPanel() {
final JComboBox combo = new JComboBox();
combo.setUI(new ComboBoxUI());
combo.addItem("One");
combo.addItem("Two");
combo.addItem("Three");
setLayout(new BorderLayout());
add(combo, BorderLayout.CENTER);
}
}

static class ComboBoxUI extends BasicComboBoxUI {
protected ComboPopup createPopup() {
return new ComboBoxPopup(comboBox);
}
}

static class ComboBoxPopup extends BasicComboPopup {

public ComboBoxPopup(JComboBox combo) {
super(combo);
}

protected MouseListener createListMouseListener() {
return new MouseAdapter() {
// TODO: add your implementation here
};
}
}

public static void main(String[] args) {
final JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new ComboPanel(), BorderLayout.CENTER);
frame.pack();
frame.setVisible(true);
}
}

Best regards,
Przemek

[Thomas A. Russ]

mamta81 <roy....@gmail.com> writes:

I guess I don't quite understand what sort of interaction you are trying
to achieve.

If you are talking about selecting an item with the mouse and then still
being able to scroll, then it doesn't seem to make much sense. After
all, if you want to scroll, why not just avoid clicking and scroll
instead?

--
Thomas A. Russ, USC/Information Sciences Institute