You can read and write to the Application Support folder. But FILES in an Undo stack? That makes little sense to me.
If you want to undo changes to a file, store the changes or the command that will cause the changes in the undo stack. If you are changing the organisation of files on disc then save a description of that organisation in the undo stack. You may want to read up on the way Cocoa utilises Undo, because it sounds like you might not have a good grasp on it. Even if you need to store very large objects in the undo stack, unless you can prove it's a serious problem, just let the memory get paged to disk VM naturally. It's rare that users need to undo a very long history, so even if the older history is paged out, the chances are the user will never know. --Graham On 24/03/2012, at 10:17 AM, Steven wrote: > Hello, > > Where is the correct place to store an on-disc undo stack associated with a > NSDocument instance ? > The stack may contain several potentially large files so we don't want them > to occupy memory. > For a compound document the stack could reside in a directory NSFileWrapper. > For a single file document should a temporary directory be used ? > I guess the chosen location may need to persist beyond the occurrence of the > automatic termination feature. > Any advice appreciated. > Thanks. > > Steven. > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/cocoa-dev/graham.cox%40bigpond.com > > This email sent to graham....@bigpond.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
