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Bug 1381134 - Ensure we're using the correct frame for the :after/:before references

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Tag #1375
This commit is contained in:
Matt A. Tobin 2020-04-17 06:38:06 -04:00 • committed by Roy Tam
commit d3c2a6b6b5
5 changed files with 97 additions and 5 deletions
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8
layout/base/nsCSSFrameConstructor.cpp
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@ -6076,12 +6076,10 @@ nsCSSFrameConstructor::AddFrameConstructionItemsInternal(nsFrameConstructorState
static void
AddGenConPseudoToFrame(nsIFrame* aOwnerFrame, nsIContent* aContent)
{
NS_ASSERTION(nsLayoutUtils::IsFirstContinuationOrIBSplitSibling(aOwnerFrame),
"property should only be set on first continuation/ib-sibling");
// FIXME(emilio): Remove this property, and use the frame of the generated
// content itself to tear the content down? It should be quite simpler.
aOwnerFrame = nsLayoutUtils::FirstContinuationOrIBSplitSibling(aOwnerFrame);
nsIFrame::ContentArray* value =
aOwnerFrame->GetProperty(nsIFrame::GenConProperty());
if (!value) {
@ -6343,7 +6341,9 @@ AdjustAppendParentForAfterContent(nsFrameManager* aFrameManager,
// frames to find the first one that is either a ::after frame for an
// ancestor of aChild or a frame that is for a node later in the
// document than aChild and return that in aAfterFrame.
if (aParentFrame->GetProperty(nsIFrame::GenConProperty()) ||
nsIFrame* afterBeforeOwnerFrame =
nsLayoutUtils::FirstContinuationOrIBSplitSibling(aParentFrame);
if (afterBeforeOwnerFrame->GetProperty(nsIFrame::GenConProperty()) ||
nsLayoutUtils::HasPseudoStyle(aContainer, aParentFrame->StyleContext(),
CSSPseudoElementType::after,
aParentFrame->PresContext()) ||