Name: nkR10003 Date: 06/08/2001



UIManger can't return defaults(color, font, etc.) correctly for UI delegate
when different L&F is installed. For example, one can't display Metal tabbed pane
on Windows JFrame when Windows L&F is installed. Sometimes we can't even
instantiate some metal classes when different L&F is installed, for example,
MetalInternalFrameTitlePane on Apple Aqua L&F.

If this is correct behavior (one should not display(instantiate) components from
different L&F this way, or should use any workaround), this should be documented
(for example, in JavaDoc for JComponent.setUI method).

Example below demonstrates this problem:
------------------example--------------------
import javax.swing.*;
import com.sun.java.swing.plaf.windows.*;
import javax.swing.plaf.metal.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.plaf.*;

public class test {
    
    public static void main(String[] args) {
        
        JFrame frame = new JFrame("Metal Tab pane on Windows L&F");
        
        //make tab
        //////////
        
        JTabbedPane mtabbedPane = new JTabbedPane();
        JPanel panel = new JPanel(false);
        JLabel filler = new JLabel("Metal");
        filler.setHorizontalAlignment(JLabel.CENTER);
        panel.setLayout(new GridLayout(1, 1));
        panel.add(filler);
        mtabbedPane.addTab("Metal", panel);
        
        frame.getContentPane().setLayout(new GridLayout(1, 1));
        frame.getContentPane().add(mtabbedPane, BorderLayout.CENTER);
        
        //Install Windows L&F
        /////////
        
        WindowsLookAndFeel wlnf = new WindowsLookAndFeel();
        try {
            UIManager.setLookAndFeel(wlnf);

        } catch (UnsupportedLookAndFeelException ulnfe) {
            ulnfe.printStackTrace();
        }
        
        frame.addWindowListener(new WindowAdapter() {
           public void windowClosing(WindowEvent e) {
               System.exit(0);
           }
        });
        
        
        //set Metal UI
        //////////
        
        MetalTabbedPaneUI ui = new MetalTabbedPaneUI();
        mtabbedPane.setUI(ui);
        
        frame.setSize(400, 125);
        frame.setVisible(true);
    }
}
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