Wrapped components not visible with FlowLayout

From:

Tassilo Horn <tassilo@member.fsf.org>

Newsgroups:

comp.lang.java.programmer

Date:

Tue, 15 Sep 2009 17:21:57 +0200

Message-ID:

<878wggw7vu.fsf@thinkpad.tsdh.de>

Hi all,

I have a JPanel using BorderLayout. On the SOUTH I add another JPanel
containing buttons and a text field using FlowLayout. When I shrink the
JFrame, the components in the latter JPanel wrap around as it should be,
but the components in the second row are not visible. I can only see a
very small part of their top.

What's wrong here?

Here's the code:

--8<---------------cut here---------------start------------->8---
    public MapFrame(AnnotatedOsmGraph graph) {
        super("jgStreetMap");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        getContentPane().setLayout(new BorderLayout());
        resultPanel = new ResultPanel();
        mapPanel = new MapPanel(graph, resultPanel);
        getContentPane().add(mapPanel, BorderLayout.CENTER);
        getContentPane().add(resultPanel, BorderLayout.EAST);

        JPanel buttonPanel = new JPanel();
        buttonPanel.setLayout(new BoxLayout(buttonPanel, BoxLayout.Y_AXIS));
        getContentPane().add(buttonPanel, BorderLayout.WEST);

        JPanel detailPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
        getContentPane().add(detailPanel, BorderLayout.SOUTH);

        detailPanel.add(new JLabel("Visible details:"));

        showMapButton = new JCheckBox("Map", mapPanel.isShowingMap());
        detailPanel.add(showMapButton);
        showMapButton.addChangeListener(new ChangeListener() {
            [...]
        });

        showNatureButton = new JCheckBox("Streets only", mapPanel
                .isShowingStreetsOnly());
        detailPanel.add(showNatureButton);
        showNatureButton.addChangeListener(new ChangeListener() {
            [...]
        });

        searchTextField = new JTextField(20);
        searchTextField.setToolTipText("Enter a name of a town and hit return.");
        detailPanel.add(searchTextField);
        searchTextField.addActionListener(new ActionListener() {
            [...]
        });

        [...]

        pack();
        setVisible(true);
        validate();
    }
--8<---------------cut here---------------end--------------->8---

Is there something obvious?

Bye,
Tassilo