Am Di,19.08.2008 um 20:46 schrieb Scott Anguish:
On 19-Aug-08, at 12:52 PM, Jeff Mesnil wrote:
On Tue, Aug 19, 2008 at 1:37 PM, Jeff Mesnil <[EMAIL PROTECTED]>
wrote:
The application is behaving as expected, the model (the ovals) are
kept in MyDocument and the DrawView just draws them.
But I was wondering if that was the "right" Cocoa way to do so, to
use
an IBOutlet to connect a NSView to a NSDocument.
Is there another way to have a reference to the document from one
view
of the application?
Answering my own question, my use case is similar to the Sketch
example bundled with XCode.
In Sketch, they use KVC to observe an NSArrayController.
I did the same by calling bind:toObject:withKeyPath:options: in
MyDocument windowControllerDidLoadNib: method and it works.
To sum up, I've seen 3 different ways to write this code:
- use an IBOutlet to reference the NSDocument from a NSView
- use [[[self window] windowController] document] from a NSView
(thanks Chaitanya!)
- forget about the NSDocument and use KVC to directly observe the
ovals
Using the KVC seems the most natural way to do that in Cocoa.
I think all three are actually very valid.
Yes, but the first and second approach is IMHO the worst, because the
view expects a typing (some accessores) to get the data.
There is a 4th possibility: Implementing a data source.
Cheers,
Amin
although everywhere you've said KVC above needs to e replaced with
KVO. :-)
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Amin Negm-Awad
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