Integrate macOS documents with NSDocument?

[johnzhou721]

What is the problem or limitation you are having?

I don't see the native NSDocument class being used in Toga Cocoa. This native class (https://developer.apple.com/documentation/appkit/nsdocument?language=objc) has iCloud support for reading and writing documents and also renaming etc. supports.

I understand that Toga does not differentiate a document app anymore however the following dialog is expected by mac users in apps dealing with documents, and we should try to implement that.

Describe the solution you'd like

When an application is a document app, somehow cooperate with the native NSDocument to manage the documents.

Describe alternatives you've considered

Status quo, however as far as I understand that will make Toga document apps not integrateable with iCloud.

Additional context

I'm sorry for the vagueness but as this has to do with apps and windows and stuff I am not in a position to propose a concrete solution.

[freakboy3742]

In the not-too-distant past, Cocoa Documents did subclass NSDocument; however, we found that it wasn't necessary to achieve the feature set of Document-based apps.

If there's a specific new feature that we could add that requires NSDocument support on the backend, then we're open to suggestions, but it needs to be grounded in a specific feature that can potentially be implemented on other platforms. That doesn't mean we need to add iCloud support everywhere, but some broader notion of "Cloud integration" would need to exist.