Hey, sorry I never responded. I just completely forgot. I don't know what was up when I first read your email, but I just took in the wrong way I guess.
After reading your second explanation, I understand what you meant about NSNumber. I was trying to bind the NSComboBox index to a NSNumber object mainly because the index was only needed temporarily. Anyway, for the record, I decided that a NSComboBox was really not the correct tool for what I wanted to do anyway. The HIG says the NSComboBox should allow the user to enter a custom value and use the values in the list as auto-complete suggestions. Since I do not want to allow custom values, a table view with a search box was a much better solution and works great. With the table view bound to an array controller, all I needed to do was use selectedIndexes to index arrangedObjects to get the information I need from the user's selection. Thanks for the help. On Oct 13, 2012, at 10:38 PM, Ken Thomases <k...@codeweavers.com> wrote: > On Oct 13, 2012, at 11:17 PM, Randy Widell wrote: > >> Wow. Woah. OK, sorry my ignorance offends. > > I didn't express offense. At least, I didn't intend to. > >> What in the world was I trying to do…I was trying to bind the selection >> index of a NSComboBox to a NSNumber because the Apple Cocoa bindings >> document for NSComboBox says the value can be bound to a NSNumber. > > It can be bound to a _property_ of some object where the type of that > property is NSNumber. > >> Using -init didn't seem so nonsensical to me. It could it init with 0. It >> could init with NaN. But, you're right, -init is not listed in the NSNumber >> class reference and that should have been a clue. > > Well, more to the point: an NSNumber is immutable. It can only have the > value it was initialized with. So, if you instantiate one in a NIB, whether > it got a value of 0 or NaN, it would be stuck with that value forever. > > So, my point was: what good is it to bind a view's selection (or whatever) to > a constant value? > > >> Anyway, cool, I just decided to use -indexOfSelectedItem on a NSComboBox >> outlet when the sheet finishes. > > That works, but it would also have worked to bind the value binding of the > NSComboBox to a property of some controller object. My concern is that you > were trying to bind it to an object (rather than a property of an object) > which betrays a fundamental confusion, and I wanted to bring that out into > the open so you could work through it. > > Regards, > Ken > _______________________________________________ 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
