Missing plonk and moveOutOf in fractions

Description

When the caret is at the top of a fraction and you press up, no “plonk” sound gets triggered

(Beautiful arrow added using paint)

Steps to Reproduce

1. Go to https://cortexjs.io/mathlive/
2. Put the caret at the top of the fraction
3. Press the up arrow key

Actual Behavior

Nothing happens

Expected Behavior

I expected a plonk sound and a moveOutOf event

Environment

MathLive version v0.67.0

Operating System Windows 10

Browser Firefox 88 and Microsoft Edge

[arnog]

Yeah, that makes sense. Same thing with a regular textfield: tab changes focus, but arrow keys don’t.

I’m going to add a move-out event that will be triggered only by the arrow keys and keep the focus-out for the tab key. The move-out event will plonk by default if not handled.

Would you find it useful to have a way to “tab to the next focusable element” or can you already easily figure that out in your move-out handler?

[arnog]

Right, I was thinking that the mouveOutOf hook at the top level of the equation made sense, but not “inside”, but you’ve convinced me, that does feel like that could work. So, call the moveOutOf hook to (potentially) shift the focus to something else, and if not handled, plonk.