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Posted to user@ofbiz.apache.org by Daniel P <le...@yahoo.es> on 2007/01/03 02:08:18 UTC
Re: problem with POS modal window in Linux.
Dear all,
More details on my investigations on the POS issue I reported on this list on 28/12/06, (issue OFBIZ-567)
- With Linux (Debian Etch), and JDK 1.5, the issue reproduces as I reported previously: application is completely blocked with alert windows because they are not shown on front of screen. The same for various desktop managers: Gnome and other 'light window managers' as xfce4 and icevm-lite. Tested also with both XuiCoreSwing_v2_0_6_jdk1_4.jar and XuiCoreSwing_v2_0_6_jdk1_5.jar
- With Linux (Debian Etch), and JDK 1.4 (1.4.2_13), the issue does not reproduce, whichever window manager is used. However in this case there is a residual issue, as reported by Jacques Le Roux: when an 'alert' window is displayed, if you click in another part of the window, the 'alert' dissapears but the main screen is blocked (waiting user confirmation of the hidden alert). Depending on the window manager you use, you can switch again to the alert window to recover control: this has been tested successfully with a 'light' window manager (icevm-lite) as suggested by Andy Zeneski. However, this is not possible with Gnome: the alert window is not reachable.
Being the biggest issue with the JDK 1.5, I would suggest to check whether this is really an issue with the SUN JDK1.5 virtual machine for Linux, or maybe a compatibility issue between XUI and JDK 1.5
Apart from this, for the smaller issues with JDK 1.4, the alert windows may need to be modal, so that the user is forced to accept before switching to another window.
Best Regards,
Daniel.
Jacques Le Roux <ja...@les7arts.com> escribió:
Thanks Andy,
I hope somebody will try soon and report as well.
Jacques
----- Original Message -----
From: "A. Zeneski"
To:
Sent: Friday, December 29, 2006 5:46 PM
Subject: Re: problem with POS modal window in Linux.
I fought with this "bug" for a long time, and was hoping that Java
1.5 on Linux would solve the problem. Then again, it may be a window
manager issue; as I think when I switched to a very light window
manager (can't for the life of me remember which one) for the POS
terminals I was able to avoid the problem.
Alt-Tab was never disabled in the main window, I used to just
configure a special user login which had access to no applications
(due to the fact it was a mini-window manager) and ran the POS
application on login; logged out when the terminal was closed.
Disabling alt-tab in this case was not necessary.
Again, I really think this is a window manager issue. Maybe try
different managers and see if you have different results?
Andrew
On Dec 28, 2006, at 4:16 AM, Daniel P wrote:
> David,
>
> I can understand than the POS screen is a modal window by design
> in order to avoid employees accessing other applications. However,
> note that the BIG issue here is that in Linux, POS Alert messages
> boxes are displayed behind the main screen, so you cannot close
> them, and so the application is blocked (this only happens to me in
> Linux, not windows, it doesn't seem a design issue.).
>
> Let's hope Jacques, Andy or others can give me a clue with this ;)
>
> Daniel
>
>
> David E Jones escribió:
>
> I'm pretty sure this is a feature rather than a bug... ;)
>
> In most POS environments you don't want employees exiting the
> application and fooling around with the system.
>
> Of course, it's probably not hard to turn off that option, perhaps
> even in one of the XUI files. Hopefully Jacques or Andy or someone
> with more POS experience can chime in on that particular.
>
> -David
>
>
> On Dec 28, 2006, at 1:21 AM, Daniel P wrote:
>
>> Hi,
>>
>> I am experiencing a big issue using OFBiz Point-Of-Sale application
>> over Linux (Debian Etch) with Java JDK 1.5.0.x
>>
>> The problem is that the POS main screen behaves like a modal
>> blocking window in Linux. Once the main screen is displayed, you
>> cannot switch to another window of the system with Alt+Tab. What is
>> worst, when the application tries to display an "Alert
>> message" (like for example "Product Not Found" when you press SKU)
>> the alert is actually presented behind the main screen, instead of
>> on top of it. So, you cannot accept the message and you can neither
>> do anything with the main screen: the application is blocked. Then
>> I have to log in with a different TTY and kill the java process.
>>
>> This behaviour is not reproduced over Windows XP with the same Java
>> JDK: you can swith to other application with Alt+Tab and alert
>> messages are properly displayed in top.
>>
>> I just wanted to ask if anyone has tried POS over Linux and
>> experienced such a problem. I'm a newbie to OFBiz and maybe I am
>> doing something wrong. Otherwise, this is a big issue that has to
>> be put in Jira. BTW, should I put the issue in Jira myself or is it
>> restricted to developers ?
>>
>> Please advice,
>>
>> Daniel.
>>
>>
>>
>> ______________________________________________
>> LLama Gratis a cualquier PC del Mundo.
>> Llamadas a fijos y móviles desde 1 céntimo por minuto.
>> http://es.voice.yahoo.com
>
>
>
>
> ---------------------------------
>
> LLama Gratis a cualquier PC del Mundo.
> Llamadas a fijos y móviles desde 1 céntimo por minuto.
> http://es.voice.yahoo.com
__________________________________________________
Correo Yahoo!
Espacio para todos tus mensajes, antivirus y antispam ¡gratis!
Regístrate ya - http://correo.yahoo.es
Re: problem with POS modal window in Linux.
Posted by Jacques Le Roux <ja...@les7arts.com>.
Daniel,
Thanks for thorough try. The problem (as you may remember) is that the alert windows *is already* modal as you may verify using M$
Windows where it works without *any* problems. Hence my proposition in
https://issues.apache.org/jira/browse/OFBIZ-567#action_12461766. BTW under Windows we see only one task when switching with Alt+Tab.
Jacques
From: "Daniel P" <le...@yahoo.es>
> Dear all,
>
> More details on my investigations on the POS issue I reported on this list on 28/12/06, (issue OFBIZ-567)
>
> - With Linux (Debian Etch), and JDK 1.5, the issue reproduces as I reported previously: application is completely blocked with
alert windows because they are not shown on front of screen. The same for various desktop managers: Gnome and other 'light window
managers' as xfce4 and icevm-lite. Tested also with both XuiCoreSwing_v2_0_6_jdk1_4.jar and XuiCoreSwing_v2_0_6_jdk1_5.jar
>
> - With Linux (Debian Etch), and JDK 1.4 (1.4.2_13), the issue does not reproduce, whichever window manager is used. However in
this case there is a residual issue, as reported by Jacques Le Roux: when an 'alert' window is displayed, if you click in another
part of the window, the 'alert' dissapears but the main screen is blocked (waiting user confirmation of the hidden alert). Depending
on the window manager you use, you can switch again to the alert window to recover control: this has been tested successfully with a
'light' window manager (icevm-lite) as suggested by Andy Zeneski. However, this is not possible with Gnome: the alert window is not
reachable.
>
>
> Being the biggest issue with the JDK 1.5, I would suggest to check whether this is really an issue with the SUN JDK1.5 virtual
machine for Linux, or maybe a compatibility issue between XUI and JDK 1.5
>
> Apart from this, for the smaller issues with JDK 1.4, the alert windows may need to be modal, so that the user is forced to
accept before switching to another window.
>
> Best Regards,
> Daniel.
>
>
> Jacques Le Roux <ja...@les7arts.com> escribió:
> Thanks Andy,
>
> I hope somebody will try soon and report as well.
>
> Jacques
>
> ----- Original Message -----
> From: "A. Zeneski"
> To:
> Sent: Friday, December 29, 2006 5:46 PM
> Subject: Re: problem with POS modal window in Linux.
>
>
> I fought with this "bug" for a long time, and was hoping that Java
> 1.5 on Linux would solve the problem. Then again, it may be a window
> manager issue; as I think when I switched to a very light window
> manager (can't for the life of me remember which one) for the POS
> terminals I was able to avoid the problem.
>
> Alt-Tab was never disabled in the main window, I used to just
> configure a special user login which had access to no applications
> (due to the fact it was a mini-window manager) and ran the POS
> application on login; logged out when the terminal was closed.
> Disabling alt-tab in this case was not necessary.
>
> Again, I really think this is a window manager issue. Maybe try
> different managers and see if you have different results?
>
> Andrew
>
>
>
>
> On Dec 28, 2006, at 4:16 AM, Daniel P wrote:
>
> > David,
> >
> > I can understand than the POS screen is a modal window by design
> > in order to avoid employees accessing other applications. However,
> > note that the BIG issue here is that in Linux, POS Alert messages
> > boxes are displayed behind the main screen, so you cannot close
> > them, and so the application is blocked (this only happens to me in
> > Linux, not windows, it doesn't seem a design issue.).
> >
> > Let's hope Jacques, Andy or others can give me a clue with this ;)
> >
> > Daniel
> >
> >
> > David E Jones escribió:
> >
> > I'm pretty sure this is a feature rather than a bug... ;)
> >
> > In most POS environments you don't want employees exiting the
> > application and fooling around with the system.
> >
> > Of course, it's probably not hard to turn off that option, perhaps
> > even in one of the XUI files. Hopefully Jacques or Andy or someone
> > with more POS experience can chime in on that particular.
> >
> > -David
> >
> >
> > On Dec 28, 2006, at 1:21 AM, Daniel P wrote:
> >
> >> Hi,
> >>
> >> I am experiencing a big issue using OFBiz Point-Of-Sale application
> >> over Linux (Debian Etch) with Java JDK 1.5.0.x
> >>
> >> The problem is that the POS main screen behaves like a modal
> >> blocking window in Linux. Once the main screen is displayed, you
> >> cannot switch to another window of the system with Alt+Tab. What is
> >> worst, when the application tries to display an "Alert
> >> message" (like for example "Product Not Found" when you press SKU)
> >> the alert is actually presented behind the main screen, instead of
> >> on top of it. So, you cannot accept the message and you can neither
> >> do anything with the main screen: the application is blocked. Then
> >> I have to log in with a different TTY and kill the java process.
> >>
> >> This behaviour is not reproduced over Windows XP with the same Java
> >> JDK: you can swith to other application with Alt+Tab and alert
> >> messages are properly displayed in top.
> >>
> >> I just wanted to ask if anyone has tried POS over Linux and
> >> experienced such a problem. I'm a newbie to OFBiz and maybe I am
> >> doing something wrong. Otherwise, this is a big issue that has to
> >> be put in Jira. BTW, should I put the issue in Jira myself or is it
> >> restricted to developers ?
> >>
> >> Please advice,
> >>
> >> Daniel.
> >>
> >>
> >>
> >> ______________________________________________
> >> LLama Gratis a cualquier PC del Mundo.
> >> Llamadas a fijos y móviles desde 1 céntimo por minuto.
> >> http://es.voice.yahoo.com
> >
> >
> >
> >
> > ---------------------------------
> >
> > LLama Gratis a cualquier PC del Mundo.
> > Llamadas a fijos y móviles desde 1 céntimo por minuto.
> > http://es.voice.yahoo.com
>
>
>
>
> __________________________________________________
> Correo Yahoo!
> Espacio para todos tus mensajes, antivirus y antispam ¡gratis!
> Regístrate ya - http://correo.yahoo.es