Re: Validate NSDocument on Quit
Re: Validate NSDocument on Quit
- Subject: Re: Validate NSDocument on Quit
- From: Kyle Sluder <email@hidden>
- Date: Sun, 05 Oct 2014 09:31:51 -0700
On Oct 5, 2014, at 7:36 AM, Keary Suska <email@hidden> wrote:
>
> I am trying to prevent a quit in a document-based app when data in a document is invalid. AFAICT when auto save is turned on none of the normal document closing methods are called, and when the app delegate is called, NSDocumentController shows no existing documents. It might also have to do with the "Ask to keep changes" preference. Has anyone figured out how to trap closing to prevent saving possibly invalid data?
This sounds at odds with the fundamental concept of auto-saving, which is that your data is more or less always up to date on disk.
Why can’t you write the “invalid” data? It’s the user’s work-in-progress.
--Kyle Sluder
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