I am reading a document in the format of the old version of my app and
converting it to a new format. The old version is not a document at all but
is a fixed data file in /Application Support/MyApp/
MyDocument *untitledDoc = [[NSDocumentController sharedDocumentController]
makeDocumentForURL:nil withContentsOfURL:fileURL
ofType:kApplicationDocumentType error:&error];
if (untitledDoc)
{
[untitledDoc makeWindowControllers];
[untitledDoc showWindows];
[untitledDoc setFileURL:nil];
[[NSDocumentController sharedDocumentController] addDocument:(NSDocument
*)untitledDoc];
}
This works fine and I am able to migrate the data into a real NSDocument
subclass.
However, if I close the window (thus closing the document) and choose to not
save, the file package at fileURL is deleted.
Yikes!
How can I completely disassociate the fileURL from the new document that I
created. I want to treat fileURL as a template or stationary that is only
read from, and never written to.
[untitledDoc setFileURL:nil] does not seem to work to disassociate the
document from the source file.
Thanks,
Trygve
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