Bug 21527 – Make CSS scrollbars support :hover and :active

• Component: CSS
• Status: RESOLVED FIXED

[Dave Hyatt]

Make scrollbars support :hover and :active

[Dave Hyatt]

Created attachment 24269 [details]
Patch

[Adam Roben (:aroben)]

Comment on attachment 24269 [details]
Patch

Can you comment on the changes to :not handling in the ChangeLog?

 2394         case CSSSelector::PseudoHover: {
 2395             ScrollbarPart hoveredPart = scrollbar->hoveredPart();
 2396             if (part == ScrollbarBGPart)
 2397                 return hoveredPart != NoPart;
 2398             if (part == TrackBGPart)
 2399                 return hoveredPart == BackTrackPart || hoveredPart == ForwardTrackPart || hoveredPart == ThumbPart;
 2400             return part == hoveredPart;
 2401         }
 2402         case CSSSelector::PseudoActive: {
 2403             ScrollbarPart pressedPart = scrollbar->pressedPart();
 2404             if (part == ScrollbarBGPart)
 2405                 return pressedPart != NoPart;
 2406             if (part == TrackBGPart)
 2407                 return pressedPart == BackTrackPart || pressedPart == ForwardTrackPart || pressedPart == ThumbPart;
 2408             return part == pressedPart;
 2409         }

Maybe it's worth putting this code into a function so we don't have to duplicate it?

 99 void RenderScrollbar::setPressedPart(ScrollbarPart part)
 100 {
 101     ScrollbarPart oldPart = m_pressedPart;

Should we check part != m_pressedPart before continuing?

r=me if you land a manual test with it.

[Dave Hyatt]

Fixed in r37486.