KSharedConfig inter-process change notification?

[Oswald Buddenhagen]

On Sat, Feb 13, 2010 at 11:16:51PM -0500, Andriy Rysin wrote:
> I am currently rewriting kxkb into kded daemon, plasma applet and a reusable
> widget and have a question on config change notification. Seems like usually we
> have to send dbus message. But if I have several components (kded daemon,
> plasmoid etc) which need to know about config change made in KCModule
>
good

> it'll will have to know about all of them to send the message out.
> 
why? a signal is undirected. just look how "everything else" does it.
stlye kcm comes to mind.

> Seems like the nicer way would be to allow interested parties to connect to
> some signal (e.g. "configChanged") in KSharedConfig and when sync is made send
> this signal out. Different engines could be used for that: internal KDE IPC
> messaging or even fam. Then the module which changes config should not care of
> the consumers and consumers would not have to expose "reloadConfig" or
> "restart" method.
> 
that's a good thought, thought many times before. but this isn't a
simple topic; it needs to be done Right (TM).