Bug 201496
| Summary: | MouseEvent.button should be 0 for mousemove events | ||
|---|---|---|---|
| Product: | WebKit | Reporter: | Fujii Hironori <Hironori.Fujii> |
| Component: | DOM | Assignee: | Nobody <webkit-unassigned> |
| Status: | NEW | ||
| Severity: | Normal | CC: | ap, cdumez, graouts, pvollan, webkit-bug-importer |
| Priority: | P2 | Keywords: | InRadar |
| Version: | WebKit Nightly Build | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| See Also: | https://bugs.webkit.org/show_bug.cgi?id=198679 | ||
Fujii Hironori
MouseEvent.button should be 0 for mousemove events
Spec: https://www.w3.org/TR/uievents/#dom-mouseevent-button
> The value of button is not updated for events not caused by the
> depression/release of a mouse button. In these scenarios, take
> care not to interpret the value 0 as the left button, but rather
> as the un-initialized value.
test case 1: attachment 377952 [details]
test case 2: https://jsfiddle.net/fujihiro/vy7hkpLw/10/embedded/result
Firefox and Chrome set it 0 for mousemove events.
| Attachments | ||
|---|---|---|
| Add attachment proposed patch, testcase, etc. |
Alexey Proskuryakov
This seems to work in Safari. Is this a Windows port bug report?
Fujii Hironori
This is a test procedure:
1. Open attachment 377952 [details]
2. Hold the mouse middle button pressing
3. Move the mouse
button should be 0, but 1.
I tested with Safari Technology Preview 91 and Safari 12.1.2.
Radar WebKit Bug Importer
<rdar://problem/55180368>