Re: Notification when NSPersistentDocument done loading model
Re: Notification when NSPersistentDocument done loading model
- Subject: Re: Notification when NSPersistentDocument done loading model
- From: Dave Fernandes <email@hidden>
- Date: Tue, 30 Dec 2008 01:22:52 -0500
On Dec 28, 2008, at 7:31 PM, Richard Ashwell wrote:
If I understand Philip, I am having the same challenge, It isn't
enough for me to let NSPersistentDocument do the load, I want a
notification or some way of knowing after the load is completed so
that I can fix up other related stuff. Is there someway to at a
minimum:
1) In some overridden method of NSPersistentDocument subclass for
my document as an example:
- (void)windowControllerDidLoadNib:(NSWindowController *)
windowController
windowControllerDidLoadNib: would be a perfectly good place to do
initialization after the document has been "loaded".
2) To test for when the nib loaded via the NSPersistentDocument's
open event or was it instead via the new document event.
I am new to all of this please be gentle and Philip was here first,
If I misread his question and mine is completely different?
Thanks in advance for any advice,
Richard
On Dec 22, 2008, at 5:58 PM, PHILIP GRANDINETTI wrote:
I'm using a Core Data model and letting NSPersistentDocument
manage the task of finding and loading the application's model.
My model contains data that I am displaying in a graph
(SM2DGraphView) A problem I'm having is that once the model data
is done loading I want to send a refresh message to the graph.
So, I put the refresh message at the end of the document's
initWithType:error: but this seems to be too early in the process
and when the refresh asks the NSArrayController bound to the data,
it says it is empty, that is, canRemove returns false.
initWithType:error: is only called for new documents, not for
previously existing documents when re-opened.
initWithContentsOfURL:ofType:error: is called for existing documents,
but the NSArrayController won't exist yet since the NIB has not yet
been loaded.
I tried getting a notification with
NSManagedObjectContextObjectsDidChangeNotification but this didn't
seem to work. I can post the code in case this should have
worked, but first I wanted to ask if there might be a simpler
approach?
Thanks,
Philip
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