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Bug 1355351 - Make pseudo-elements return the correct style via getComputedStyle

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* Add a node property to access the ::before and ::after pseudo-elements
* Look for the frame for ::before and ::after pseudos
* Clean up pseudo-element props
* Simplify nsLayoutUtils callers, and make child iterators notice display: contents pseudos

Tag #1375
This commit is contained in:
Matt A. Tobin 2020-04-17 05:10:25 -04:00 • committed by Roy Tam
commit d3ffda520f
16 changed files with 188 additions and 241 deletions
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4
layout/base/RestyleManager.cpp
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@ -3626,14 +3626,14 @@ ElementRestyler::MustReframeForPseudo(CSSPseudoElementType aPseudoType,
// Check for a ::before pseudo style and the absence of a ::before content,
// but only if aFrame is null or is the first continuation/ib-split.
if ((aFrame && !nsLayoutUtils::IsFirstContinuationOrIBSplitSibling(aFrame)) ||
nsLayoutUtils::GetBeforeFrameForContent(aGenConParentFrame, aContent)) {
nsLayoutUtils::GetBeforeFrame(aContent)) {
return false;
}
} else {
// Similarly for ::after, but check for being the last continuation/
// ib-split.
if ((aFrame && nsLayoutUtils::GetNextContinuationOrIBSplitSibling(aFrame)) ||
nsLayoutUtils::GetAfterFrameForContent(aGenConParentFrame, aContent)) {
nsLayoutUtils::GetAfterFrame(aContent)) {
return false;
}
}