Dialog resize problem

[Frans Janssen]

Hi all,

A question for the Swing experts here: I have a JFrame for my server task that uses GridBagLayout. It contains two JTextFields:


When I reduce the size of the frame (by resizing it with the mouse), the lower text field immediately drops to a very small size (this happens already if a reduce the size with only a few pixels):


I fiddled around with the GridBagConstraints, but have yet failed to find the settings that solve the problem. Anyone knows how to do this?

I don't mind that the text field becomes smaller when the frame gets smaller; I just don't want it to jump to zero-size.

Many thanks,

Frans

P.S. this is the code used to build the frame:

   private void buildUI() {
        setTitle("B&S Database Server - offline");
 
        disabledButtons = new LinkedList<JComponent>();
 
        GridBagLayout layout = new GridBagLayout();
        setLayout(layout);
        GridBagConstraints gbc = new GridBagConstraints();
 
        gbc.fill = GridBagConstraints.NONE;
        gbc.weightx = 0.0;
        gbc.weighty = 0.0;
        gbc.gridx = 0;
        gbc.gridy = 0;
        gbc.gridwidth = 1;
        gbc.fill = 4;
        gbc.insets = new Insets(4, 4, 4, 4);
        gbc.anchor = GridBagConstraints.EAST;
        JLabel label = new JLabel("Database file");
        add(label, gbc);
        disabledButtons.add(label);
 
        gbc.gridx++;
        gbc.weightx = 1.0;
        gbc.anchor = GridBagConstraints.WEST;
        gbc.fill = GridBagConstraints.HORIZONTAL;
        fileNameField = new JTextField(configuration.getServerDatabasePath().toString(), 32);
        add(fileNameField, gbc);
        disabledButtons.add(fileNameField);
 
        gbc.gridx++;
        gbc.weightx = 0.0;
        gbc.fill = GridBagConstraints.NONE;
        JButton fileNameButton = new JButton("Select...");
        fileNameButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                selectFile();
            }
        });
        add(fileNameButton, gbc);
        disabledButtons.add(fileNameButton);
 
        gbc.gridx = 0;
        gbc.gridy++;
        gbc.anchor = GridBagConstraints.EAST;
        label = new JLabel("Network port");
        add(label, gbc);
        disabledButtons.add(label);
 
        gbc.gridx++;
        gbc.weightx = 1.0;
        gbc.anchor = GridBagConstraints.WEST;
        portField = new JTextField(configuration.getServerPort(), 5);
        add(portField, gbc);
        disabledButtons.add(portField);
 
        gbc.gridx = 0;
        gbc.gridy++;
        gbc.weightx = 0.0;
        JButton startButton = new JButton("Start server");
        getRootPane().setDefaultButton(startButton);
        startButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                startServer();
            }
        });
        add(startButton, gbc);
        disabledButtons.add(startButton);
 
        gbc.gridx++;
        gbc.gridwidth = GridBagConstraints.REMAINDER;
        gbc.anchor = GridBagConstraints.EAST;
        JButton exitButton = new JButton("Exit");
        exitButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                close();
            }
        });
        add(exitButton, gbc);
 
        addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                close();
            }
        });
 
        setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
 
        fileDialog = new FileDialog();
 
        pack();
        setVisible(true);
    }
  

[ January 10, 2005: Message edited by: Frans Janssen ]

[Steve Smith]

I realise that this is an old post, but thought I would reply anyway. Perhaps it will help someone if not the original poster. What is happening is that the JTextField is shrinking to its minimum size. My solution to this is to use setMinimumSize() and setPreferredSize() on the JTextField, using the same value for both calls and specifying the size that you want the field to be in both calls. This has solved the problem for me.