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authorwolfbeast <mcwerewolf@wolfbeast.com>2019-11-04 13:31:30 +0100
committerwolfbeast <mcwerewolf@wolfbeast.com>2019-11-04 13:31:30 +0100
commitc5c44d12073791bb1150445ce48bc57fccbb544d (patch)
tree9d7704d17cb06f886b0943d1508c9ff08f4b9570 /layout/generic/StickyScrollContainer.cpp
parenta63272b5303b7aef467e974c630f745146fb983a (diff)
parentbbc2206a0fda053a6f5071b457bd209dab9ed268 (diff)
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Merge branch 'master' into certexception-work
Diffstat (limited to 'layout/generic/StickyScrollContainer.cpp')
-rw-r--r--layout/generic/StickyScrollContainer.cpp10
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.