The following code creates a tabbed pane with one tab. When the button at the bottom of the frame is clicked it invokes removeAll on the JTabbedPane followed by a addTab to add the component back to the JTabbedPane. When the button is clicked the component in the tab is no longer visible (isVisible == false).

I believe this is happening because BasicTabbedPaneUI caches the visibleComponent, and does not check if the component has become not visible.

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class TabTest {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Tab test");
        final JTabbedPane tp = new JTabbedPane();
        final JLabel testLabel = new JLabel("TEST");

        tp.addTab("Test", testLabel);
        frame.getContentPane().add(tp);
        frame.setDefaultCloseOperation(3);

        // Widgets to add/remove testLabel
        JButton button = new JButton("Test");
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ae) {
                tp.removeAll();
                tp.addTab("Test", testLabel);
                System.out.println("Is visible: " + testLabel.isVisible());
                if (!testLabel.isVisible()) {
                    testLabel.setVisible(true);
                }
            }
        });
        frame.getContentPane().add(button, BorderLayout.SOUTH);
        frame.pack();
        frame.show();
    }
}


Name: rlT66838 Date: 12/06/99


jdk 1.2.2 classic or hotspot

I guess that the problem with jtabbedpane I had may be the same as
bug 4190719.

I add four components to a jtabbedpane. After making it visible, I
select the first tab and the contents belong to the third. After I select
third tab and then select the first again,the component is updated
to the right one.

If you need the codes, I will email you the jar file.

Thanks,

Yuhong Wang

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(Review ID: 98692)
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