On 2011 Aug 08, at 09:29, Kevin Perry wrote: > You may be able to work around this problem by overriding > -autosaveWithImplicitCancellability:completionHandler: instead (also?) and > doing the same approach of delaying NSDocument's code until once you've > completed the background work.
Thank you, Kevin. That seems to work; at least, it has worked for a day. As usual when dealing with NSDocument, the answer is to "override as high as possible". I just submitted Document Feedback suggesting that this document http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/Documents/Articles/ObjectInteractions.html get another excellent diagram like the others in there, showing how Autosave In Place works. We would have gotten here faster! Jerry Here's the revised code for anyone else playing with customized autosave. Now simpler and safer, because we're only dealing with autosave… /*! @brief Override of new autosave method invoked by Cocoa when running in Mac OS X 10.7 or later. */ - (void)autosaveWithImplicitCancellability:(BOOL)autosavingIsImplicitlyCancellable completionHandler:(void (^)(NSError *errorOrNil))completionHandler { if ([self dataModelChangesAreNowInProgressOrWhatever]) { if (autosavingIsImplicitlyCancellable) { completionHandler([NSError errorWithDomain:NSCocoaErrorDomain code:NSUserCancelledError userInfo:nil]) ; return ; } } <snip> Insert code here to queue an operation or block to be run when other tasks changing the data model are completed. If not a using modern block-handling method, you may need Block_copy(completionHandler). </snip> } /*! @brief Real autosaving method, invoked when operation or block is dequeued. */ - (void)reallyAutosaveWithCompletionHandler:(void (^)(NSError *errorOrNil))completionHandler { [super autosaveWithImplicitCancellability:NO completionHandler:completionHandler] ; // If you did Block_copy(), … Block_release(completionHandler) ; } _______________________________________________ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
