I have a Panel which has a PopUpButton which has it's Content Values bound to
an ArrayController.
The ArrayController has it's Content Array bound to File's Owner:
currentDocument.listOfThings.
The File's Owner (aka) Application Delegate:
@property (readonly) DocumentSubclass *currentDocument;
- (DocumentSubclass *)currentDocument
{
return [ [ NSDocumentController sharedDocumentController ]
currentDocument ];
}
and the DocumentSubclass has of course:
@property (readonly) NSArray *listOfThings;
The problem: how does the ArrayController know that the currentDocument has
changed?
Currently I am using a rather silly hack:
My DocumentSubclass calls in init and windowWillClose:
AppDelegate *a = [ [ NSApplication sharedApplication ] delegate ];
[ a somethingIsChanging ];
and the Application Delegate has:
- (void) somethingIsChanging
{
[ self willChangeValueForKey: @"currentDocument" ];
[ self performSelector: @selector(didChangeValueForKey:) withObject:
@"currentDocument" afterDelay: 0 ];
}
This works, but I have a strong feeling that there is a very obvious better
solution which I somehow cannot see.
Gerriet.
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