Prioritized event handlers

[Michael Strauß]

I would encourage to continue this discussion in the focus delegation
thread, not in the prioritized event handlers thread.



On Tue, Nov 12, 2024 at 8:13 PM Nir Lisker <nlisker at gmail.com> wrote:
>
> I'd like to understand the focus and event handling problem better. If I have a focused TextField, all key events go to it. If I have a Spinner, which is a TextField with 2 Buttons, it is focused as a single unit and consumes key events whether they are aimed at the text field or the buttons (I assume the buttons handle arrow up/down keys?). If I have a ClolorPicker, it is not focused as a single unit - it has sliders, buttons, text fields and other things, which can be focused individually.
>
> What I'm trying to find out is what is "the primitive" in the focus/event handling plan. A TextField and a Spinner are treated as primitives, but a ColorPicker and a DatePicker are not. Where does the line pass? If I'm a controls author, can I create a Spinner that allows focusing/event-handling the text field and the buttons separately, like ColorPicker allows? In this case, Spinner is not a "primitive" control.
>