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nllptrx e241e02afb feat(app): dismiss the chat keyboard on a fast upward flick (#2417)
* feat(app): dismiss the chat keyboard on a fast upward flick

Scrolling the history to read earlier messages left the keyboard up, so the
visible transcript stayed cramped and the keyboard had to be closed by hand
first — two steps for what should be one.

React Native's keyboardDismissMode cannot express the wanted behaviour:
"on-drag" fires on the first pixel and kills the keyboard on any peek-scroll,
and "interactive" is broken on inverted lists. So the gesture is measured
here: samples are taken from the scroll events and, at release, the speed over
the drag's final stretch decides. Measuring at release rather than averaging
the whole drag is what keeps a fast but controlled read-scroll from counting
as a flick, since such a gesture decelerates before the finger lifts.

Timestamps and offsets come from the events, never from a clock: with a busy
JS thread the callbacks arrive in a burst long after the gesture, and
wall-clock spacing then reads a calm scroll as a flick. The release offset
comes from the end-drag event for the same reason — the last onScroll can be
stale by the time a short flick lands.

Android needs both the blur and the dismiss. Dismissing alone leaves the
input focused and the keyboard inset applied, so the layout stays shifted
with an empty gap where the keyboard was; blurring alone releases focus but
leaves the IME on screen.

Verified on an Android device with a Release build: a slow drag and a
0.6 dp/ms scroll keep the keyboard, a 2.9 dp/ms flick dismisses it and the
composer settles back with no leftover gap. iOS was exercised by hand on
device only, without automated coverage of the gesture itself.

* refactor(app): isolate keyboard flick dismissal

* fix(app): isolate keyboard shift context

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Co-authored-by: Mohamed Boudra <boudra.moha@gmail.com>
2026-07-28 22:29:33 +08:00
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2026-07-27 19:46:38 +02:00
2026-07-27 19:46:38 +02:00
2026-07-28 21:51:12 +08:00
2026-07-27 19:46:38 +02:00