Re: Responder Chain Confusion
Re: Responder Chain Confusion
- Subject: Re: Responder Chain Confusion
- From: Lee Ann Rucker <email@hidden>
- Date: Mon, 08 Sep 2014 23:55:05 +0000
- Thread-topic: Responder Chain Confusion
If you’re targeting 10.7 or later, you can use supplementalTargetForAction:sender: to add a responder chain side branch without modifying the actual chain.
On Sep 7, 2014, at 9:24 AM, email@hidden wrote:
> Hi all
>
> I just spent a bit of time poking around the responder chain and nil targeted actions.
> I built a view controller and a view hierarchy with controls that should be configurable.
> When instantiating the view controller the interface allows configuring the action SEL of the controls. Reuse is the goal of course.
> I know 10.10 changes things greatly for view controllers. But on 10.9 that's not there.
>
> Anyway, I need to insert the view controller into the responder chain between its top level view and that view's superview.
> That wasn't too bad. Implement the missing reference to the vc in a view subclass and give the vc a callback when the view is in place.
>
> But what I found while tinkering is that for non-document based apps from a vanilla project template there was no next responder for the window or the NSApplication instance.
> I had a method in the app delegate that I was trying to reach via nil targeted action. It couldn't get there.
> So I set the window nextResponder to the app and the app to the app delegate. I also made the app delegate an NSResponder subclass.
>
> It feels like overkill.
> Am I missing something simple?
> Is there something better to do here?
>
>
>
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