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moebius#138: Optimize operations on root of deeply-nested frame tree

Browse source 
https://github.com/MoonchildProductions/moebius/pull/138
This commit is contained in:
janekptacijarabaci 2018-04-24 21:39:13 +02:00 • committed by Roy Tam
commit 85692a1198
23 changed files with 651 additions and 40 deletions
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18
dom/base/Element.cpp
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@ -1844,6 +1844,24 @@ Element::UnbindFromTree(bool aDeep, bool aNullParent)
SetParentIsContent(false);
}
#ifdef DEBUG
// If we can get access to the PresContext, then we sanity-check that
// we're not leaving behind a pointer to ourselves as the PresContext's
// cached provider of the viewport's scrollbar styles.
if (document) {
nsIPresShell* presShell = document->GetShell();
if (presShell) {
nsPresContext* presContext = presShell->GetPresContext();
if (presContext) {
MOZ_ASSERT(this !=
presContext->GetViewportScrollbarStylesOverrideNode(),
"Leaving behind a raw pointer to this node (as having "
"propagated scrollbar styles) - that's dangerous...");
}
}
}
#endif
// Ensure that CSS transitions don't continue on an element at a
// different place in the tree (even if reinserted before next
// animation refresh).