> On 10 Sep 2018, at 2:19 pm, Alastair Houghton <alast...@alastairs-place.net> > wrote: > > On 10 Sep 2018, at 13:21, iain <i...@falsevictories.com > <mailto:i...@falsevictories.com>> wrote: >> >> I have an application, which has 3 controls >> >> [button] [custom view] [button] >> >> I’ve set the NextKeyView of each of them to the control to the right >> [button] -> [custom view] -> [button] >> >> And the tab and shift tab works between them as expected. >> >> The situation gets more complicated because the custom view has 3 possible >> focus areas, which I also want to be part of the tab chain. >> As it’s one big custom drawn widget, I’ve implemented a rudimentary tab >> handler in the KeyDown: method with a counter to keep track of which area is >> focused. >> And it sort of works >> >> But, I’m wondering how to know if the parent NSView gained keyboard focus >> through a tab or a shift-tab >> >> If focus is on the first button, and you press Tab, the focus should go to >> the 1st area of the custom view >> If focus is on the last button and you Shift Tab from it, the focus should >> go to the 3rd area of the custom view >> Currently, it always has to go to the area that was focused when the view >> lost focus. >> >> Is there a way to do what I’m wanting? > > In your -becomeFirstResponder, you could examine the current event (noting > that keypresses aren’t the only way you could gain keyboard focus) to > determine whether it was a Tab or Shift-Tab keypress. You can get the event > using [NSApp currentEvent]. Make sure it works with Full Keyboard Access > turned on in System Preferences as well. >
Ah, good idea, thank you. > Also note that you will want to implement the relevant accessibility support; > otherwise, when users turn on VoiceOver, they won’t be able to focus > individual elements in your view, and the VoiceOver cursor (which is not the > same thing as the normal keyboard focus system) won’t interact properly with > your view. > Yup, that’s all working already, the proper keyboard focus handling was the last bit I needed that I couldn’t work out. thanks > Kind regards, > > Alastair. > > -- > http://alastairs-place.net <http://alastairs-place.net/> _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
