I have myContentArray, bound to the contentArray of an
NSTreeController. And an OutlineView which has its columns bound to
the same NSTreeController.
I do [ myContentArray addObject: someObject ] and this is shown in
the OutlineView.
Everything works very nicely.
- (IBAction)revertDocumentToSaved:(id)sender
{
NSMutableArray *newContent = [ [ NSMutableArray alloc ] init ];
[ outlineTreeController setContent: newContent ];
[ myContentArray release ]; myContentArray = newContent;
// now rebuild myContentArray
NSError *outError;
[ self readFromURL: [ self fileURL ] ofType: @"DocumentType"
error: &outError ];
}
Is this the correct? (At least it seems to work).
But all disclosure triangels are now closed. Is there some way to
reopen them to the previous state?
I have the strong feeling that I will have to handle this myself. Ok.
So be it.
int numberOfRows = [ outlineView numberOfRows ];
for( int row = 0; row < numberOfRows; row++ )
{
id item = [ outlineView itemAtRow: row ]; //
_NSArrayControllerTreeNode
BOOL isExpanded = [ outlineView isItemExpanded: item ];
if (isExpanded)
{
NSString *key = [ item valueForKey: @"Key" ]; <--- does
not work.
};
};
The objects in myContentArray are key value coding-compliant for the
key Key.
But I get the error message: [<_NSArrayControllerTreeNode 0x3f1fd0>
valueForUndefinedKey:]: this class is not key value coding-compliant
for the key Key.
So what can I do to identify the expanded item?
Or should I just forget about the NSTreeController and fill the table
from a data source?
All this on 10.4.11 Tiger.
Kind regards,
Gerriet.
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