Name: gm110360 Date: 05/20/2004


FULL PRODUCT VERSION :
java version "1.5.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b32c)
Java HotSpot(TM) Client VM (build 1.5.0-beta-b32c, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
  Bug Id 4290471 described a feature introduced for Metal L&F and using setDefaultLookAndFeelDecorated. If set true, the L&F would provide the window decorations (JFrame, JDialog). If set false, the window manager would provide the window decorations.

Actual practice shows that a window **created with Metal L&F** provided decorations, which has the L&F dynamically changed to any other L&F, is then displayed with NO decorations (border, title bar, close/min/max icons).

  Bug 4851411 reports the same problem, was closed w/o fix, but should be re-opened. Bug 4290471 states if the L&F doesn't support decorations, the window manager will supply them. This last part is not happening--when dynamically changing from Metal L&F to any other L&F.

This prevents the use of dynamic L&F changes (very common) with the setDefaultLookAndFeelDecorated(true) method.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Create a JFrame with JFrame.setDefaultLookAndFeelDecorated(true) and L&F = Metal.
Dynamically, change the L&F to any other L&F, e.g., Windows, using:

            UIManager.setLookAndFeel(lnf);
            SwingUtilities.updateComponentTreeUI(thisWindow);
            thisWindow.pack();

The titlebar, border, and titlebar icons disappear.

Also, see Bug 4851411 for code.


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
If a L&F does not support provision of window decorations, then the window manager should provide the decorations (see Bug 4290471).
ACTUAL -
The window is repainted, but without the titlebar, border, and titlebar icons.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
See code provided in Bug 4851411.
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
See Bug 4851411. Works, but not practical/reasonable.
(Incident Review ID: 270467)
======================================================================