Is there a public method to trigger clearLiveRegion in AccessibilityManager?

[RahjIII]

I have ARIA hinting turned on. When user types into xterm.js terminal directly, the AccessibilityManager updates a div

with the most recent updates from the terminal, so that a screen reader has a chance to announce them. The div gets cleared out every time that the user types another keystroke into xterm.js.

I have implemented a line-mode telnet client using xterm.js, and I provide my own text-line-editor widget. It submits text to xterm.js via the write/writeln methods, and this works fine BUT the write/writeln methods don't clear out the live-region div like typing into the normal xterm.js text entry does. The result is that after a few writeln's and some more terminal output, the AccessibilityManager puts "Too much output to announce, navigate to rows manually to read" into the live-region and then stops updating it.

I tried getting the live-region div element and clearing out its innerText directly, but it looks like there is also a line counter maintained internally by AccessibilityManager that tracks how full it is too.

Is there a way to tell the terminal component to flush out AccessibilityManager's live-region on-demand? Maybe with a synthetic keypress sent to <somewhere?> or other method?

Thanks!

[RahjIII]

Turns out if you briefly give focus to the terminal and then take it way, that's enough to trigger the clearLiveRegion that is registered to the onBlur() handler.

Something like:

let active = document.activeElement;
terminal.focus();
active.focus();

is enough to clear the live-region so that the screen reader works.