[Webkit-unassigned] [Bug 25249] New: Wheel events while dragging scrollbar thumb not handled correctly

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=25249

           Summary: Wheel events while dragging scrollbar thumb not handled
                    correctly
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: pkasting at google.com
                CC: hyatt at apple.com


If the user is dragging the scrollbar thumb and (perhaps accidentally) uses the
mousewheel, the desired behavior is platform-specific:
* On Mac, native scrollbars seem to ignore the wheel events.
* On Windows, native scrollbars snap back to the drag origin until the user
moves the mouse again.

Currently WebCore does neither of these (on Windows it applies the wheel scroll
and continues the drag; not sure what Safari version I tested on Mac so I won't
comment there).


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