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Using custom NSController subclasses in IB

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Using custom NSController subclasses in IB

Subject: Using custom NSController subclasses in IB
From: Graham Davison <email@hidden>
Date: Thu, 10 May 2007 23:03:36 -0500

	From: 	  email@hidden
	Subject: 	Using custom NSController subclasses with IB
	Date: 	10 May 2007 22:08:06 CDT (CA)
	To: 	  email@hidden

Hi everyone.

I'm sure this is a newbie question, but I've been searching for quite a while for a answer to it.

I've created a subclass on NSController to essentially duplicate NSUserDefaultsController but using CFPreferences so that it can be used in a control panel. I want to use it in Interface Builder, but I can't instantiate it.

I've seen the instructions in the Interface Builder tips for creating subclasses, but the instruction there is to instantiate an NSController, then import the subclass, then set the class on the controller. The problem is, you can't instantiate a plain NSController.

Any ideas or suggestions? Am I missing something obvious?

Here's the interface for the class, in case it helps. PreferencesObjC is a (poorly named) ObjC wrapper for the CFPreferences.

@class PreferencesObjC;

@interface PreferencesController : NSController {
	// Modelled on NSUserDefaultsController
	@private
		PreferencesObjC*		_preferences;
		NSMutableDictionary*	_temporaryValues;
		id						_valueAccessor;
		struct __preferencesControllerFlags {
			unsigned int _appliesImmediately:1;
			unsigned int _reserved:31;
		} _preferencesControllerFlags;
}

- (id)initWithPreferences: (PreferencesObjC*)preferences;

- (PreferencesObjC*)preferences;	// KVO compliant

- (void)setAppliesImmediately: (BOOL)flag;   // default: YES
- (BOOL)appliesImmediately;			// KVO compliant

- (BOOL)hasUnappliedChanges;		// KVO compliant

- (id)values;	// KVO compliant

- (void)revert: (id)sender;
/*- (void)save: (id)sender;*/

@end


Thanks,
Graham Davison
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