How to dynamically resize JOptionPane

Question

Hi All.
I have a JOptionPane that contains a JPanel as the message (BorderLayout). The JPanel has a JComboBox on the north part and another JPanel in the center. When the combo changes selection the panel in the center is changed. Basically the combo represents some sort of selection and the panel is changed based on the selection to enter some specific search criteria.
The problem I have is the search criteria panels are of different sizes. Therefore I want to resize the JOptionPane every time a combo selection is made.
Does anybody know how to do this?
nes

Answer 1

Hi ICE,
Here is some example code explaining my problem. Sorry it is a bit long but it explains my exact requirement.
< 74philip the problem with calling JOptionPane.createInternalFrame is that it does not block until the Ok button is pressed. That is why I cannot use this solution >
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
public class TestFrame3
    extends JFrame
    implements ActionListener
    protected JPanel m_panel = new JPanel( new BorderLayout() );
    protected JPanel m_propertyPanel1 = new JPanel();
    protected JPanel m_propertyPanel2 = new JPanel();
    protected JPanel m_propertyPanel3 = new JPanel();
    protected JDesktopPane m_desktopPane = new JDesktopPane();
    protected JComboBox m_combo;
    protected JButton m_button;
    protected JOptionPane m_pane;
    public TestFrame3()
        initGUI();
    public void actionPerformed( ActionEvent event )
        if ( event.getSource() == m_combo )
            switch ( m_combo.getSelectedIndex() )
                case ( 1 ):
                    m_panel.remove( m_propertyPanel1 );
                    m_panel.remove( m_propertyPanel3 );
                    m_panel.add( m_propertyPanel2, BorderLayout.CENTER );
                    break;
                case ( 2 ):
                    m_panel.remove( m_propertyPanel1 );
                    m_panel.remove( m_propertyPanel2 );
                    m_panel.add( m_propertyPanel3, BorderLayout.CENTER );
                    break;
                default:
                    m_panel.remove( m_propertyPanel2 );
                    m_panel.remove( m_propertyPanel3 );
                    m_panel.add( m_propertyPanel1, BorderLayout.CENTER );
                    break;
            //  THIS IS WHERE I WOULD LIKE TO RESIZE/PACK THE OPTION PANE
            //       m_pane.???????
            //  BUT HOW??
            m_panel.validate();
            m_panel.repaint();
        else if ( event.getSource() == m_button )
            m_pane = new JOptionPane();
            m_pane.showInternalConfirmDialog( m_desktopPane, m_panel,
                                              "Test",
                                              JOptionPane.OK_CANCEL_OPTION );
    private void initGUI()
        initSelectionCombo();
        initPropertyPanels();
        m_button = new JButton( "Go For It..." );
        m_button.addActionListener( this );
        getContentPane().setLayout( new BorderLayout() );
        getContentPane().add( m_desktopPane, BorderLayout.CENTER );
        getContentPane().add( m_button, BorderLayout.SOUTH );
        setSize( 800, 900 );
        show();
    private void initSelectionCombo()
        Vector v = new Vector();
        v.addElement( "Property Panel 1" );
        v.addElement( "Property Panel 2" );
        v.addElement( "Property Panel 3" );
        m_combo = new JComboBox( v );
        m_panel.add( m_combo, BorderLayout.NORTH );
        m_combo.addActionListener( this );
    private void initPropertyPanels()
        JLabel property1 = new JLabel( "Property 1" );
        JLabel property2 = new JLabel( "Property 2" );
        JLabel property3 = new JLabel( "Property 3" );
        m_propertyPanel1.setLayout( new GridBagLayout() );
        m_propertyPanel1.setBorder( BorderFactory.createLineBorder( Color.RED ) );
        m_propertyPanel1.add( property1,
                              new GridBagConstraints( 1, 2, 1, 1, 1, 1,
            GridBagConstraints.EAST, GridBagConstraints.REMAINDER,
            new Insets( 3, 3, 3, 3 ), 0, 0 ) );
        m_propertyPanel1.add( property2,
                              new GridBagConstraints( 2, 1, 1, 1, 1, 1,
            GridBagConstraints.EAST, GridBagConstraints.BOTH,
            new Insets( 3, 3, 3, 3 ), 0, 0 ) );
        m_propertyPanel1.add( property3,
                              new GridBagConstraints( 6, 5, 1, 1, 1, 1,
            GridBagConstraints.EAST, GridBagConstraints.BOTH,
            new Insets( 3, 3, 3, 3 ), 0, 0 ) );
        JLabel property4 = new JLabel( "Property 4" );
        property4.setBounds( 10, 10, 100, 20 );
        JButton property5 = new JButton( "Property 5" );
        property5.setBounds( 40, 60, 190, 40 );
        m_propertyPanel2.setBorder( BorderFactory.createLineBorder( Color.GREEN ) );
        m_propertyPanel2.setLayout( null );
        m_propertyPanel2.add( property4 );
        m_propertyPanel2.add( property5 );
        m_propertyPanel3.setLayout( new FlowLayout( FlowLayout.CENTER, 10, 10 ) );
        m_propertyPanel3.setBorder( BorderFactory.createLineBorder( Color.BLUE ) );
        JButton property6 = new JButton( "Property 6" );
        JButton property7 = new JButton( "Property 7" );
        JButton property8 = new JButton( "Property 8" );
        JButton property9 = new JButton( "Property 9" );
        m_propertyPanel3.add( property6 );
        m_propertyPanel3.add( property7 );
        m_propertyPanel3.add( property8 );
        m_propertyPanel3.add( property9 );
        m_panel.add( m_propertyPanel1, BorderLayout.CENTER );
    public static void main( String args[] )
        SwingUtilities.invokeLater( new Runnable()
            public void run()
                new TestFrame3();
}nes