plasma application policies

[Aaron J. Seigo]

hi all ...

while looking at https://bugs.kde.org/show_bug.cgi?id=201663 i found that the 
problem is that setHasConfigurationInterface (potentially useful information) 
turns off the config option even though Applet provides global short settings.

i've "fixed" it locally so that the applet setting has config interface 
doesn't change that at all.

<braindump>

however, there are two situations where this is going to completely fall 
apart:

* usage outside of a global desktop shell app like plasma-desktop (e.g. 
amarok)

* a script engine or other applet that provides it's own configuration 
interface from scratch (e.g. google gadgets (used to?) and the current icon 
plasmoid (silly thing ;))

in the first case of application usage, it would be really useful to be able 
to set some policies. i tend to view Corona as the "QApplication" of a plasma 
instance, so whatever ends up happening this should probably go into Corona. 
or maybe just some static methods in the Plasma namespace directly? (the 
difference is that if it's in Corona, then an app can have different coronas 
that behave differently and then this code would end up in the appication in 
the same place as other Corona-driven customizations)

i'm thinking of adding the ability to set some "Plasma::Attributes" to turn 
on/off things like shortcuts. the API would be simple and modelled after the 
QWidget::setAttribute API. 


the individual applet case is a bit odder, but i really think that overriding 
showConfigurationInterface in an applet is Wrong(tm) and should be considered 
an implementation bug.


the script engine situation is probably the easiest of the bunch: just add a 
method to the script engine that states what it does with configuration (e.g. 
setProvidesCustomizedConfiguration(bool)) and query that when deciding what to 
do with the configuration action.


thoughts?

-- 
Aaron J. Seigo
humru othro a kohnu se
GPG Fingerprint: 8B8B 2209 0C6F 7C47 B1EA  EE75 D6B7 2EB1 A7F1 DB43

KDE core developer sponsored by Qt Software
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