RESOLVED FIXED 142517
Assertion in ScrollController::processWheelEventForScrollSnapOnAxis when scrolling with mechanical wheel mouse 
https://bugs.webkit.org/show_bug.cgi?id=142517
Summary Assertion in ScrollController::processWheelEventForScrollSnapOnAxis when scro...
Brent Fulgham
Reported 2015-03-09 17:32:50 PDT
In Bug 141973 (<https://trac.webkit.org/changeset/180987>) I introduced a regression for mechanical wheel mice users. After my change, WebKit always creates a snap scroll animation state context, which triggers new scroll snap point logic when processing wheel events. If you work with a mechanical wheel mouse, the scroll snap point handler does not understand the gesture (since mechanical mice only produce "stateless" wheel events), and complains via an assertion.
Attachments
Patch (1.96 KB, patch)
2015-03-09 17:38 PDT, Brent Fulgham 		no flags
DetailsFormatted DiffDiff
Patch (3.29 KB, patch)
2015-03-09 17:47 PDT, Brent Fulgham 		simon.fraser: review+
DetailsFormatted DiffDiff
Show Obsolete (1) View All Add attachment proposed patch, testcase, etc.
Brent Fulgham
Comment 1 2015-03-09 17:33:17 PDT
<rdar://problem/20088167>
Brent Fulgham
Comment 2 2015-03-09 17:35:35 PDT
Note: additional work for mechanical wheel mice is being done under Bug 142501.
Brent Fulgham
Comment 3 2015-03-09 17:38:09 PDT
Created attachment 248301 [details] Patch
Brent Fulgham
Comment 4 2015-03-09 17:47:16 PDT
Created attachment 248302 [details] Patch
Brent Fulgham
Comment 5 2015-03-09 18:00:41 PDT
Committed r181300: <http://trac.webkit.org/changeset/181300>
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