Re: Using ScreenSaverDefaults with NSUserDefaultsController
Re: Using ScreenSaverDefaults with NSUserDefaultsController
- Subject: Re: Using ScreenSaverDefaults with NSUserDefaultsController
- From: leenoori <email@hidden>
- Date: Sat, 16 Dec 2006 17:27:09 +0100
Almost two years ago Craig Hockenberry wrote:
I am working on a plug-in that uses ScreenSaverDefaults instead of
NSUserDefaults (so it doesn’t put it's preferences in the
application's
domain.)
I'd like to use bindings to manage these user defaults -- but for
the life
of me I can't figure out how to do it.
I am loading an instance of NSUserDefaultsController from the NIB
file --
but don’t see anyway to get it to use something other than
[NSUserDefaults
standardUserDefaults].
I've tried creating my own subclass and overriding the defaults:
method to
return an instance of ScreenSaverDefaults, but that doesn't seem to
have any
effect. (Interestingly, defaults: is invoked before awakeFromNib:
so it
seems we need an instance before the NIB is finished loading.)
The only success I've had is by creating my own instance with
[[NSUserDefaultsController alloc] initWithDefaults:myDefaults
initialValues:myInitialValues]. But if I do this, I don’t have
anything to
bind against in Interface Builder -- and doing my own
bind:toObject:withKeyPath:options defeats the purpose of using
bindings in
the first place.
Any ideas or suggestions would be most appreciated. At this point
my only
option appears to be implementing an NSObjectController with my own
preference model -- that's a whole lot of code I'd rather not write...
I'm wondering what the current state of the art is on this question.
My searches have only revealed questions, no answers:
http://forums.macnn.com/79/developer-center/189565/subclassing-
nsuserdefaultscontroller/
You could use initWithDefaults:initialValues: and provide a
subclass of NSUSerDefaults which uses a specific domain, but
writing that NSUserDefaults subclass may well be as much work as
writing your own replacement for NSUserDefaultsController.
Basically, is there any way to use NSUserDefaultsController in
loadable bundles (plug-ins, preference panes etc)? I'd like to keep
the preferences for loadable plug-ins separate from the main
application preferences because it's cleaner to keep things modular,
and because I've run into a weird NSUserDefaults behaviour which
makes it undesirable to do so (specifically, calling
"registerDefaults:" from a plug-in doesn't work).
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