[voida6]

What/Why?

On Android, a long-press drag to extend a text selection in the T3 Code message list is often cut off. The magnifier shows and the selection grows, then on finger-up there are no handles and no toolbar. Double-tapping a word works.

Cause:

1. When the finger moves during a long-press selection, the framework Editor calls requestDisallowInterceptTouchEvent(true) on the parents and relies on it until ACTION_UP.
2. reallowParentInterceptIfLinkReleased() runs after every non-ACTION_DOWN event and calls requestDisallowInterceptTouchEvent(false) whenever no link is pressed. That undoes the Editor's request on the next ACTION_MOVE.
3. The scrolling list intercepts the drag, the TextView gets ACTION_CANCEL, and the selection action mode never starts.

Fix: LinkLongPressMovementMethod.disallowsParentIntercept records when cancelJSTouchForLinkTap() made the request, and the re-allow only undoes that request. Link presses behave as before. A plain swipe on text still scrolls the list.

Upstream: software-mansion#1012 (open, unreviewed). This is the same commit, cherry-picked onto fork/t3-mobile without conflicts. It can be dropped when the fork syncs past the upstream merge. It touches the same React Native LinkLongPressMovementMethod.kt as the link long-press fork PR; the two merge cleanly together.

Testing

• ktlint 1.8.0 passes on both changed files on this branch. No unit test: the function under test needs the framework Editor drag path, and upstream's React Native package had no test setup when I wrote it.
• Device: release build of T3 Code with this patch on a Galaxy S25 Ultra (Android 16), assistant message text in the message list. Before: drags were cut off with no handles or toolbar. After: each of 4 long-press drags ended with handles and the Copy toolbar; a debug log recorded ACTION_UP with hasSelection() == true and no ACTION_CANCEL mid-drag. Plain swipes still scrolled the list. Link tap, link long-press and a long-press that slides off a link behaved as before.

Before:

before-drag-selection.mp4

After:

after-drag-selection.mp4

iOS is unchanged.

Credit: when this ships in a T3 Code bump, could the bump commit include Co-authored-by: voida6 <289179128+voida6@users.noreply.github.com>? Thanks.

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