Question

I have this panel:

public class MyPanel extends JPanel {

    public MyPanel() {
        super();
        this.setLayout(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();

        JTable leftTable = new JTable();
        gbc.fill = GridBagConstraints.BOTH;
        gbc.gridx = 0;
        gbc.gridy = 0;
        gbc.weightx = 0.1;
        gbc.weighty = 1.0;
        add(leftTable, gbc);

        JTextPane textPane = new JTextPane();
        gbc.fill = GridBagConstraints.BOTH;
        gbc.gridx = 1;
        gbc.gridy = 0;
        gbc.weightx = 0.4;
        gbc.weighty = 1.0;
        add(textPane, gbc);

        JTable rightTable = new JTable();
        gbc.fill = GridBagConstraints.BOTH;
        gbc.gridx = 2;
        gbc.gridy = 0;
        gbc.weightx = 0.5;
        gbc.weighty = 1.0;
        add(rightTable, gbc);
    }
}

Then when I enter some characters into the JTextPane it is automatically resized. With 200 characters on the same line (on the text pane), the 2 JTables are not visible anymore.

How can I do to fix the width of my JTextPane?

Thanks.

Answer 1

Finally I used a FormLayout from JGoodies.

private void initItemsPanel() {
    JPanel itemsPanel = new JPanel();
    itemsPanel.setLayout(new FormLayout("left:pref, fill:400px, pref:grow", "fill:20px, fill:4px, fill:max(20px;pref)"));
    CellConstraints cc = new CellConstraints();

    // the left table
    JTable leftTable = new JTable();
    itemsPanel.add(leftTable.getTableHeader(), cc.xywh(1, 1, 1, 2));
    itemsPanel.add(leftTable, cc.xywh(1, 3, 1, 1));

    // the text pane
    itemsPanel.add(new JTextPane(), cc.xywh(2, 2, 1, 2));

    // the right table
    JTable rightTable = new JTable();
    rightTable.setAutoResizeMode(JTable.AUTO_RESIZE_LAST_COLUMN);
    itemsPanel.add(rightTable.getTableHeader(), cc.xywh(3, 1, 1, 2));
    itemsPanel.add(rightTable, cc.xywh(3, 3, 1, 1));

    // Adding the items panel to dialog panel
    JScrollPane itemsScrollPane = new JScrollPane(itemsPanel);
    itemsScrollPane.getVerticalScrollBar().setUnitIncrement(3);

    dialogPanel.add(itemsScrollPane, BorderLayout.CENTER); // with dialogPanel previously instantiated
}

For all the situations I tested (resizing, empty/filled components, etc.) it was more predictable.

Note that you have to call getTableHeader() explicitly because the JTables are not directly in a JScrollPane.

Thanks.