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Re: KVO Bindings


From: Johannes Brakensiek
Subject: Re: KVO Bindings
Date: Wed, 14 Aug 2019 22:13:51 +0200

Hey David,

thank you for your quick and comprehensive response. I did not know about the UIKit implementation, that is interesting.

What would be a a clean and simple way (I saw there are massive libs) to do some sort of model-ui binding for iOS and/or GNUstep (using KVO)? Is there an app that does this and could be considered an example?

Thanks again
Johannes


Am 14.08.2019 um 15:57 schrieb David Chisnall <gnustep@theravensnest.org>:

Last time I checked:

KVO worked.  There is a cleaner way of implementing it on the GNUstep runtime (which WinObjC does, but GNUstep doesn't yet).

Some of the bindings work, but several of the NS*Controller classes are missing functionality.  Apple is quietly trying to forget Cocoa bindings were ever a thing (they're not supported by UIKit at all and no longer seem to be recommended by the AppKit tutorials), so I don't think anyone has been motivated to do it.  I don't think anything in implementing the missing parts is difficult, it's all just work.  Debugging bindings is basically impossible on macOS, I don't know whether debugging the implementation of bindings is easier...

David

On 14/08/2019 13:26, Johannes Brakensiek wrote:
Hello everyone,
just wanted to ask if anyone could give an update about this:
http://wiki.gnustep.org/index.php/KVO_Bindings_Project
Is there anybody who could implement this? What would be needed to let him/her do the work? ;-)
Thanks in advance
Johannes
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