Re: resizing labelled text field

On 10/28/2010 1:15 PM, Fred wrote:


I agree with Knute I think it's probably that the higher level Frame
doesn't know that it needs to change size. I wrote a little example
program and called pack() on the frame each time I changed the text
label's size. It seemed to work.

Uncomment the "// frame.pack()" below to see this. You should first run
this as-is, because I might be getting a little different behavior than
you: I saw my label increase size increase fine, it was the text field
that got pushed out of view.

package test;

import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;

/**
  *
  * @author Brenden
  */
public class BorderLayoutTest2
{

     public static void main( String[] args )
     {
         SwingUtilities.invokeLater( new Runnable()
         {

             public void run()
             {
                 createAndShowGui();
             }
         } );
     }

     private static void createAndShowGui()
     {
         final JFrame frame = new JFrame("Test");

         final JLabel label = new JLabel("name");

         JTextField field = new JTextField();
         field.setColumns( 10 ); // for initial sizing of the panel
         JPanel inside = new JPanel( new BorderLayout() );
         inside.add( label, BorderLayout.WEST );
         inside.add( field, BorderLayout.CENTER );

         JButton increase = new JButton( "Increase Label Text");
         inside.add( increase, BorderLayout.SOUTH );

         increase.addActionListener( new ActionListener() {

             public void actionPerformed( ActionEvent e )
             {
                 label.setText( label.getText() + "a little longer");
// frame.pack();
             }
         } );
         frame.add( inside );

         frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
         frame.pack();
         frame.setLocationRelativeTo( null );
         frame.setVisible( true );

     }
}