Bug 128133

Summary: [Mac] WK1 Clients Only Latch on Momentum Scroll
Product: WebKit Reporter: Brent Fulgham <bfulgham>
Component: WebKit Misc.Assignee: Brent Fulgham <bfulgham>
Status: RESOLVED FIXED    
Severity: Normal    
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on:    
Bug Blocks: 134569    
Attachments:
Description Flags
Patch simon.fraser: review+

Description Brent Fulgham 2014-02-03 15:49:56 PST
WK1 clients only trigger latching when the wheel event is in a momentum phase. This means that if you begin a continuous wheel scrolling event outside of a scrollable region (e.g., an Iframe), you will not latch to the main frame. Instead, the Iframe will begin consuming wheel events, causing the page scroll to stop.

This was corrected for WK2 "Async Scrolling" case in Bug 127386. However, further testing shows that this is not correct in WK1 logic.
Comment 1 Brent Fulgham 2014-02-03 15:51:35 PST
Created attachment 223032 [details]
Patch
Comment 2 Brent Fulgham 2014-02-03 16:12:49 PST
Committed r163338: <http://trac.webkit.org/changeset/163338>