Files
react-native/React
Vincent Riemer c89f5fdfd6 Rework button/buttons handling & add a new test checking for move events on chorded mouse button presses
Summary:
Changelog: [iOS][Internal] - Rework button/buttons handling on pointer events & add a new test checking for move events on chorded mouse button presses

This is a larger diff that largely stems from implementing a new pointer event platform test about chorded mouse button presses (adapted from https://github.com/web-platform-tests/wpt/blob/master/pointerevents/pointerevent_pointermove_on_chorded_mouse_button.html). In order to implement this test I added a new method, `step`, to an async test instance to allow you to run ad-hoc assertions labeled by the async test (like it's done in the original web platform test).

Once implementing the test I also discovered my current logic for handling the `button` and `buttons` properties was insufficient so I reworked it to handle more/most cases by making the `button` property instead determined by the change in the `buttons` property. This largely works but unfortunately due to what seems to be a bug in UIKit, chorded pointer "up" events receive the wrong button mask values so it's currently impossible to get this test fully passing on iOS. I've since submitted a bug report to Apple but my hopes aren't high that it will be focused on since it's such a niche issue.

Reviewed By: lunaleaps

Differential Revision: D38951159

fbshipit-source-id: 426b7cf7930ed8329151382fafee487493e568de
2022-09-01 15:01:33 -07:00
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