Hi everyone. This seems a novice question, but I could not find any high-level approach for that.
Some details of my special need: I have an NSViewController subclass, that should observe some attribute of its representedObject. However, the representedObject may change to another, become nil etc. In addition, I have server-born triggers also affecting (stop/start) observing that keyPath. I'd like to code this in a "local" manner -- meaning, when a change occurs - check if I'm already observing/not-observing the key-path, and either start, stop or do nothing with the observation. In the -(void)dealloc of my NSViewController, i'd also like to remove myself as an observer from whatever objects I'm observing. I currently use state iVars that record the state of observation, but that's ugly. I 'd like something like - (NSUInteger)isObserver:(id)object on keyPath:(NSString *)keyPath withContext:(void *)context]; // the returned number is the count of same observances with 0 as not-observing). and something like - (BOOL)removeObserver:(id)object; // where I instruct the receiver to remove object as an observer, on all key-paths and contexts. should return YES if object was an observer, and was removed, NO otherwise. Any ideas? Motti Shneor Spectrum Reflections Ltd. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
