[Webkit-unassigned] [Bug 38286] Need to call FrameView::scrollPositionChanged when changing the scroll position when the ScrollView does not have a platformWidget

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=38286





--- Comment #2 from James Robinson <jamesr at chromium.org>  2010-04-28 14:54:31 PST ---
Here's what the callstack looks like from the Mac port, which ends up calling
FrameView::scrollPositionChanged through the platform layers:


#0  WebCore::FrameView::scrollPositionChanged (this=0x8184800)
#1  0x0034c02f in -[WebHTMLView(WebPrivate) _frameOrBoundsChanged] 
#2  0x9153042a in _nsnote_callback ()
#3  0x905bd47a in __CFXNotificationPost ()
#4  0x905bd753 in _CFXNotificationPostNotification ()
#5  0x9152d680 in -[NSNotificationCenter postNotificationName:object:userInfo:]
()
#6  0x91536ed8 in -[NSNotificationCenter postNotificationName:object:] ()
#7  0x9660f024 in -[NSView _postBoundsChangeNotification] ()
#8  0x967451a0 in -[NSView translateOriginToPoint:] ()
#9  0x96744435 in -[NSClipView _immediateScrollToPoint:] ()
#10 0x96743efe in -[NSClipView scrollToPoint:] ()
#11 0x967b10af in -[NSScrollView scrollClipView:toPoint:] ()
#12 0x966de4de in -[NSClipView _scrollTo:animate:] ()
#13 0x966de091 in -[NSClipView _scrollTo:] ()
#14 0x968701de in -[NSClipView _scrollPoint:fromView:] ()
#15 0x96870154 in -[NSView scrollPoint:] ()
#16 0x048bff9a in WebCore::ScrollView::platformSetScrollPosition
#17 0x048bce4e in WebCore::ScrollView::setScrollPosition
#18 0x041c59a9 in WebCore::ScrollView::scrollBy
#19 0x041be8aa in WebCore::DOMWindow::scrollBy
#20 0x04449e3c in WebCore::jsDOMWindowPrototypeFunctionScrollBy
(javascript)

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