Re: NSViewController in the responder chain
Re: NSViewController in the responder chain
- Subject: Re: NSViewController in the responder chain
- From: Arved von Brasch <email@hidden>
- Date: Mon, 07 Jan 2013 12:51:10 +1100
Ah-ha. Thanks! When I gave something else in the view focus, the menu was validated as expected, because the responder chain then would have gone through my view controllers.
This also explains why it makes sense to insert the NSViewControllers above NSWindow in the responder chain (which other examples suggested). I couldn't see (or misunderstood) the reason why you'd want to go that route. The answer is that what I expected to be first responder wasn't first responder, and was more likely to be the window.
It's always incredibly obvious once you get it pointed out to you.
Thanks again.
Arved
On 2013-01-07, at 12:31 , Ken Thomases <email@hidden> wrote:
> On Jan 6, 2013, at 6:53 PM, Arved von Brasch wrote:
>>
>> 'showSettings:' is implemented in the ABItemsXibManager class, and it clearly responds to the selector as the above debug shows, but even here there is no debug from it to indicate it is being called, although the function has clearly been recognised on the responder chain.
>
> You have dumped _a_ responder chain from the button up. However, you haven't shown what is the _first_ responder and the chain from that. Unless your user settings (in System Preferences > Keyboard) is set to allow buttons to have keyboard focus, the button and tab views won't be the first responder. Unless some view in the window (e.g. a text field) accepts first responder (overrides -acceptsFirstResponder to return YES), then the window itself is likely to be the first responder. Since that's above your view controller, your view controller won't be in the responder chain flowing from the first responder.
>
>
>> As far as I can see, the validateMenuItem: method in ABItemsXibManager class is never called, even though it clearly is in the responder chain.
>
> Again, it's in _a_ responder chain, but not the one flowing from the first responder.
>
> If you want a menu item to operate on something which is not chosen by the keyboard focus, then you should target that thing directly rather than targeting First Responder.
>
> Regards,
> Ken
>
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