Thanks, that worked! I do try to read the examples and CocoaDev, but
I've found that after I've read the examples, the only way I really
learn is by trying and sometimes failing. I appreciate the help and
the quick response.
Thanks,
Cem Karan
On Nov 21, 2008, at 1:55 PM, Volker in Lists wrote:
Hi Cem,
the CollectionView needs only to be pointed to the cars
ArrayController and uses a rather obfuscated way of binding each of
its subviews fields to the appropriate car entries. you will have to
bind your prototype view controls to
CollectionView.representedObjects."key". The CollectionView is aware
of the arrangedObjects - if bound to them - and automagically
creates as many views as needed from your view prototype. I
recommend to take a look at the available examples provided by Apple
or read through Cocoadevs page on NSCollectionView.
HTH,
Volker
Am 21.11.2008 um 19:47 schrieb Cem:
I'm slowly working my way through Aaron Hillegass' Cocoa
Programming for Mac OS X and just completed the CarLot program
(Chapter 11 in the 3rd edition). I decided to challenge myself and
try to change the interface to use NSCollectionView instead of the
interface in the book. In order to do this, I bound the
NSCollectionView itself to my NSArrayController (which is called
Cars) with a keypath of arrangedObjects.condition. I then created
a new NSObjectController (called 'A car'), set it to entity mode,
and set the entity name to Car (the same as what Cars has). I
bound its Content Object to Cars.selection. I then bound the GUI
elements to the appropriate keys in Car (such as
car.selection.makeModel).
This, of course, didn't work. Since Car is bound to the
Cars.selection, whenever the selection changes, ALL views in my
NSCollectionView change at the same time. I then tried a number of
variants, none of which worked. What I want is for each subview in
my NSCollectionView to see the data relating to a different car,
not all reflect the same car. What am I doing wrong?
BTW, if anyone wants the current project/code, the whole thing is
about 32 KB tarballed, so I can email it anywhere anyone wants it.
Thanks,
Cem Karan
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