Handling updates to the JavaFX Caspian look

[Tom Schindl]

No - the current threads context classloader is not good! I'll try to
take a look at the patch but I'm out for 4 days starting tomorrow so it
might take sometime.

Tom

Am 23.04.12 22:40, schrieb Jonathan Giles:
> Oh, I should also note that the patch included with RT-19713 uses
> ServiceLoader to bring in any Theme instances provided by external jars,
> etc. I would really appreciate if someone more familiar with OSGi, and
> its classloader complexities, could provide a comment on whether using
> the default classloader (the classloader of the current thread) is
> correct, or whether we should be passing in a different classloader.
> 
> Thanks,
> Jonathan
> 
> On 24/04/2012 7:59 a.m., Jonathan Giles wrote:
>> Hi all (again),
>>
>> I've put up a very preliminary patch attached to RT-19713 [1] that
>> allows for people to set a default user agent stylesheet for their
>> entire application. If the default stylesheet is not overridden by the
>> developer, then they will be automatically updated to the latest
>> stylesheet - should we ever decide to make another one. The main
>> driver for this tweak is to prevent JavaFX user interfaces becoming
>> stale in the same way Swing user interfaces were stuck using Metal L&F.
>>
>> Please, if you have time, review the comments in the jira issue itself
>> to understand more of the problem space.
>>
>> Finally, as noted, this is a preliminary patch - there are tweaks to
>> be made for sure. Already, David Grieve has commented on the Jira
>> issue about suggested changes. I look forward to your suggestions too.
>>
>> [1] http://javafx-jira.kenai.com/browse/RT-19713
>>
>> -- Jonathan
>>
>>
>> On 14/03/2012 12:47 p.m., Jonathan Giles wrote:
>>> Hi all,
>>>
>>> Today I came across the RT-19713 [1] Jira issue I filed against
>>> myself recently. This Jira issue basically states that we should have
>>> API in JavaFX that allows for developers to lock down and specify a
>>> particular default stylesheet, and if this isn't specified by the
>>> developer, they will be automatically updated in future releases if
>>> we ever consider changing the default style sheet. We would always
>>> ship earlier style sheets as well, so if the preference was set, the
>>> style sheet would be there in the jar file.
>>>
>>> The reason why I want this feature is that I've seen tweaked caspian
>>> style sheets (for example the one used in the upcoming Scene Builder
>>> tool) that I would one day love to be the default style sheet for
>>> JavaFX as it (in my opinion) is more refined. Similarly, I don't
>>> think anyone wants to end up in the same situation as Swing, where
>>> the default L&F is Metal, because moving the default to a more modern
>>> L&F would potentially break (or at least maim) many deployed Swing
>>> applications.
>>>
>>> Ideally we would have had API like this from the get-go, but alas, it
>>> did not happen. Adding API now that by default auto-updates people is
>>> of course breaking a contract we have with developers, but I feel
>>> that it is better to break this contract now than to forever wish
>>> that we could provide a new style sheet and never be able to do it. I
>>> think the main thing is to communicate this change as loudly and from
>>> as many roof tops as possible. Perhaps there are others on this list
>>> that disagree and have different opinions. Feel free to share them.
>>>
>>> Finally, as of now, there is no intention to ship an updated style
>>> sheet that would replace the default, but I'm looking ahead to future
>>> releases where this may be desired. Perhaps JavaFX 3.0 may include a
>>> visual refresh, for example. If anyone has any thoughts on this
>>> proposal, please reply on this thread (and preferably also leave a
>>> comment on the Jira issue). I don't have any proposed API for this
>>> issue, but if anyone has any thoughts on this, please feel free to
>>> share them also.
>>>
>>> [1] http://javafx-jira.kenai.com/browse/RT-19713
>>>
>>> Thanks,
>>> Jonathan


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