New: Alt+Tab does not work when there is an open menu in a Java/Swing application

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http://bug
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           Summary: Alt+Tab does not work when there is an
open menu in a
                    Java/Swing application
           Product: kwin
           Version: unspecified
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kwin kde org
        ReportedBy: Ronny.Standtke gmx net


Version:            (using KDE KDE 3.5.6)
Installed from:    Ubuntu Packages
OS:                Linux

Whenever I use a Java/Swing application and open any menu
KWin no longer accepts the Alt+Tab combination.
You can try e.g. Pauker via Java Web Start here: ht
tp://pauker.sourceforge.net/webstart/pauker.jnlp
Then open the "File" menu in Pauker. While the
menu is open try pressing Alt+Tab. Notice that nothing
happens.
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http://bug
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l.lunak kde org changed:

           What    |Removed                     |Added
------------------------------------------------------------
----------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |LATER



------- Additional Comments From l.lunak kde org  2007-07-02
14:45 -------
It's not specific to Java, it happens with any application,
as applications grab input while showing menus, preventing
KWin from keyboard access.
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http://bug
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Ronny.Standtke gmx net changed:

           What    |Removed                     |Added
------------------------------------------------------------
----------------
             Status|RESOLVED                   
|UNCONFIRMED
         Resolution|LATER                       |



------- Additional Comments From Ronny.Standtke gmx net 
2007-07-28 11:01 -------
When I open any menu of any KDE application I can press
Alt+Tab and it works like expected.
I also gave "The Evil Operating System" a short
visit and tested there. It works like expected even with
open menus in Java applications.
There is something wrong, incomplete or incompatible within
the group of X, KDE and Java on Linux. I would be glad if
you could sit together (e.g. with the people from Sun) and
resolve this bug.
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------- Additional Comments From bramschoenmakers kde nl 
2007-07-28 20:35 -------
I couldn't run the example you provided, but I ran Pipe (the
petrinet editor) but could not reproduce your problem. The
Alt-Tab menu just shows fine.
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------- Additional Comments From Ronny.Standtke gmx net 
2007-07-28 22:42 -------
I also tried Pipe and can reproduce the problem with the
following simple steps:
1) start Pipe
2) press Alt+F to open the file menu
3) press Alt+TAB
4) notice that nothing happens

 Bram: do you reach (4) when following this steps?
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------- Additional Comments From bramschoenmakers kde nl 
2007-07-29 00:23 -------
I can only reproduce when first pressing Tab and then Alt,
but all works OK when pressing Alt and then Tab. And I think
the latter method is the usual method of Alt+Tab.
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------- Additional Comments From Ronny.Standtke gmx net 
2007-07-29 07:04 -------
I would like to reproduce your success. What distribution
and Java version do you use? I am using an up-to-date Debian
testing system and

$ java -version
java version "1.6.0_02"
Java(TM) SE Runtime Environment (build 1.6.0_02-b05)
Java HotSpot(TM) Client VM (build 1.6.0_02-b05, mixed mode,
sharing)

BTW: TAB+Alt does not work for me at all. I never tried this
before. Should this work like Alt+TAB?
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------- Additional Comments From bramschoenmakers kde nl 
2007-07-29 10:18 -------
Gentoo Linux, Java 1.5.0.12 . So it could have been a change
in the toolkit then. I'm quite unsure this is an exclusive
KWin bug, you may try another window manager, like Gnome's,
to see if it happens too.

> Should this work like Alt+TAB? 

Don't think so, though. So never mind that combo.
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------- Additional Comments From Ronny.Standtke gmx net 
2007-07-29 14:42 -------
I also tried now Java 1.5.0.12 and... it works! Thank you
very much SUN for another regression in your complete mess
that is Swing on X! 
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