Hi,
I have a problem with autosavesInPlaces and my package document and reverting
changes. The setup first:
All of the following methods in my NSDocument subclass return YES
+ (BOOL)autosavesInPlace
+ (BOOL)autosavesDrafts
- (BOOL)canAsynchronouslyWriteToURL:::
- (BOOL)checkAutosavingSafetyAndReturnError:
+ (BOOL)preservesVersions
returns NO
I also have "Ask to keep changes when closing documents" turned on in the system
preferences.
Lets say I have a document (package) saved on disk, lets call it state A.
When I make a change to my document model , a few seconds later the auto-save
kicks in, replacing the original. That is expected. This is state B.
When I don't manually use "File > Save" and quit the application, I get a
"Revert Changes" panel for the document. Expected too.
Then I select "Revert Changes" and the app quits. What I expect to find on disk
is State A. But what is actually there is state B.
Actually I'm not sure my document saving to a package has anything to do with
it.
I looked at what happens when the application quits and
- (BOOL)revertToContentsOfURL:ofType:error:
is called. The absoluteURL passed in is the original file URL. So it's not
surprising that this call doesn't actually revert any change. It's the latest
version that autosave put there, overwriting the original.
Do I have to use +preservesVersions=YES make this work (this means, reverting
actually does what it says)? I don't want my app to have that feature, but if
it's a file-system background-only thing, then I just might.
Best Regards
Markus
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__________________________________________
Markus Spoettl
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