How can a JTextField in a Dialog gain focus while mainframe is clicked

Question

Hi
I have been trying to develop a 3d application. I have some shapes on a Canvas3D laid on a JFrame.
I open a new shape dialog after pressing the appropriate button.
Once the dialog is open I need to select two shapes on canvas for reference hence there are two text fields to show the name of each.
when I select the first shape the corresponding textfield is being updated.
Now the Problem
I place the cursor in the second tex field and click on second shape on canvas.
I lose focus from text field to canvas.
Now I am unsure if the second textfield has the focus or is the focus with the first text field. Based on this focus info I can update the text fields.
I understand that only one field can have focus at a time.
My doubt is How can the JTextField retain its focus while the components on main window are being clicked.
The following code is enclosed in a listener that responds to picked shapes.
if(gooi.getSketchDialog() != null && gooi.getSketchDialog().isShowing()){
            gooi.getPick1().getCanvas().setFocusable(false);
            if(gooi.getSketchDialog().getSelectedPlaneTextField().isFocusOwner()){
                    if( pickResult != null)
                        gooi.getSketchDialog().getSelectedPlaneTextField().setText(pickResult.getNode(PickResult.SHAPE3D).getUserData().toString());
                    else if (pickResult == null){
                        gooi.getSketchDialog().getSelectedPlaneTextField().setText("");
        }Any help is appreciated.
Thanks in Advance
Venkat
Edited by: pushinglimits on Oct 31, 2008 6:52 AM

Answer 1

Michael
The text field still loses focus when its containing window is no longer focused.import java.awt.FlowLayout;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
public class NoFocusTransfer implements FocusListener {
   public static void main(String[] args) {
      SwingUtilities.invokeLater(new Runnable() {
         @Override
         public void run() {
            new NoFocusTransfer().makeUI();
   public void makeUI() {
      JTextField one = new JTextField(20);
      one.addFocusListener(this);
      JTextField two = new JTextField(20);
      two.addFocusListener(this);
      JFrame frameOne = new JFrame("");
      frameOne.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frameOne.setSize(400, 400);
      frameOne.setLocationRelativeTo(null);
      frameOne.setLayout(new FlowLayout());
      frameOne.add(one);
      frameOne.add(two);
      JButton button = new JButton("Click");
      button.setFocusable(false);
      JFrame frameTwo = new JFrame();
      frameTwo.add(button);
      frameTwo.pack();
      frameTwo.setFocusable(false);
      frameOne.setVisible(true);
      frameTwo.setVisible(true);
   public void focusGained(FocusEvent e) {
      try {
         System.out.println("Focus from: " +
                 e.getOppositeComponent().getClass().getName());
         System.out.println("Focus to: " +
                 e.getComponent().getClass().getName());
      } catch (NullPointerException npe) {
   public void focusLost(FocusEvent e) {
      try {
         System.out.println("Focus from: " +
                 e.getComponent().getClass().getName());
         System.out.println("Focus to: " +
                 e.getOppositeComponent().getClass().getName());
      } catch (NullPointerException npe) {
}db