X2Go Bug report logs - #836
defaults.py X2GOBROKER_SESSIONPROFILE_DEFAULTS height/width/fullscreen values prevents client from setting initial geometry on startup

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Subject: Bug#836: [X2Go-Dev] Bug#836: defaults.py X2GOBROKER_SESSIONPROFILE_DEFAULTS height/width/fullscreen values prevents client from setting initial geometry on startup
Reply-To: Jason Alavaliant <alavaliant@ra09.com>, 836@bugs.x2go.org
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Date: Wed, 08 Apr 2015 07:26:57 +1200
From: Jason Alavaliant <alavaliant@ra09.com>
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On 07/04/15 08:35, Mike Gabriel wrote:
> Hi Jason,
>
> thanks for your feedback on the broker.
>
> On  Sa 04 Apr 2015 11:01:27 CEST, Jason Alavaliant wrote:
>
>> Package: python-x2gobroker
>> Version: 0.0.3.0
>>
>> In the same vein as the dpi issue noted in bug #834 the presence of 
>> default values for height, width and fullscreen in the 
>> /usr/lib/python2.7/dist-packages/x2gobroker/defaults.py   file under 
>> theX2GOBROKER_SESSIONPROFILE_DEFAULTS    section prevent the 
>> x2goclient --geometry option being used to set what default geometry 
>> size (or if to use fullscreen) to be set by the client even if the 
>> admin of the x2gobroker setup hasn't defined those values in the 
>> x2gobroker-sessionprofiles.conf file.
>>
>> I'd suggest updating the 
>> /usr/lib/python2.7/dist-packages/x2gobroker/defaults.py file to 
>> remove the lines
>> "u'height': 600,"
>> "u'fullscreen': False,"
>> "u'width': 800,"
>> from the X2GOBROKER_SESSIONPROFILE_DEFAULTS section.
>>
>> In my testing with those default value gone;
>>
>> * If a height/width/fullscreen values are set in 
>> x2gobroker-sessionprofiles.conf (which is the default provided in the 
>> sample config file), then those values are used by the session 
>> overriding whatever the client has set as it's geometry option.
>> * If the values aren't set in x2gobroker-sessionprofiles.conf and a 
>> --geometry command line argument ISN'T provided to the client then 
>> the x2goclient defaults of height=600, width=800, fullscreen=False 
>> are used resulting in the same behaviour as if the defaults 
>> previously defined in defaults.py were still present.
>> *  If the values aren't set in x2gobroker-sessionprofiles.conf and a 
>> --geometry command line argument IS provided to the client it is then 
>> used and the user running the x2goclient can pick their own initial 
>> geometry to start with.
>>
>> So in default cases having that default value removed shouldn't 
>> change behavior and it would allow people to configure their starting 
>> geometry if the x2gobroker admin has permitted it by not providing 
>> overriding values in the x2gobroker-sessionprofiles.conf file.
>
> The issue goes deeper, I guess.
>
> When fixing #834 [1] I did not take into account, that the session 
> profile default values defined in defaults.py also have another 
> context. The X2GOBROKER_SESSIONPROFILE_DEFAULTS dict also implicitly 
> provides information about the type for each value (int, str, bool).
>
> So simply commenting them out is not a solution.
>
> Furthermore, my idea is to provide a special value in 
> x2gobroker-sessionprofiles.conf, i.e.,
>
>   fullscreen=not-set
>   dpi=not-set
>
> etc.
>
> If the admin uses those option for configuration, the broker will 
> simply hide those session profile options when handing the session 
> profile over to the client.
>
> What do you think of that alternative approach?
>
> Mike
>
> [1] http://bugs.x2go.org/834
Your alternative approach of providing a special not-set value to be 
used in the x2gobroker-sessionprofiles.conf sounds like it should work fine.

Thanks
Jason

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