diff options
Diffstat (limited to 'layout/generic/StickyScrollContainer.cpp')
| -rw-r--r-- | layout/generic/StickyScrollContainer.cpp | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/layout/generic/StickyScrollContainer.cpp b/layout/generic/StickyScrollContainer.cpp index ca68992c3..c5ed44e92 100644 --- a/layout/generic/StickyScrollContainer.cpp +++ b/layout/generic/StickyScrollContainer.cpp @@ -45,7 +45,7 @@ StickyScrollContainer::GetStickyScrollContainerForFrame(nsIFrame* aFrame) // <html style="position: fixed"> return nullptr; } - auto frame = static_cast<nsIFrame*>(do_QueryFrame(scrollFrame)); + nsIFrame* frame = do_QueryFrame(scrollFrame); StickyScrollContainer* s = frame->GetProperty(StickyScrollContainerProperty()); if (!s) { @@ -176,6 +176,14 @@ StickyScrollContainer::ComputeStickyLimits(nsIFrame* aFrame, nsRect* aStick, nsRect rect = nsLayoutUtils::GetAllInFlowRectsUnion(aFrame, aFrame->GetParent()); + // Note: Table row groups aren't supposed to be containing blocks, but we treat + // them as such anyway. + // Not having this basically disables position:sticky on table cells, which + // would be really unfortunate, and doesn't match what other browsers do. + if (cbFrame != scrolledFrame && cbFrame->GetType() == nsGkAtoms::tableRowGroupFrame) { + cbFrame = cbFrame->GetContainingBlock(); + } + // Containing block limits for the position of aFrame relative to its parent. // The margin box of the sticky element stays within the content box of the // contaning-block element. |