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Issue #2285 - Ensure we don't try to treat non-DOM-Node event targets as such, https://bugzilla.mozilla.org/show_bug.cgi?id=1440809 Fix crash on https://beeper.notion.site

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Brian Smith 2023-08-06 22:35:51 -05:00 • committed by roytam1
commit 42b2de6fe9
1 changed files with 6 additions and 1 deletions
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7
dom/base/FragmentOrElement.cpp
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@ -1026,7 +1026,12 @@ nsIContent::GetEventTargetParent(EventChainPreVisitor& aVisitor)
nsContentUtils::Retarget(relatedTargetAsNode, this); nsContentUtils::Retarget(relatedTargetAsNode, this);
nsCOMPtr<nsINode> targetInKnownToBeHandledScope = nsCOMPtr<nsINode> targetInKnownToBeHandledScope =
FindChromeAccessOnlySubtreeOwner(aVisitor.mTargetInKnownToBeHandledScope); FindChromeAccessOnlySubtreeOwner(aVisitor.mTargetInKnownToBeHandledScope);
if (nsContentUtils::ContentIsShadowIncludingDescendantOf( // If aVisitor.mTargetInKnownToBeHandledScope wasn't nsINode,
// targetInKnownToBeHandledScope will be null. This may happen when
// dispatching event to Window object in a content page and
// propagating the event to a chrome Element.
if (targetInKnownToBeHandledScope &&
nsContentUtils::ContentIsShadowIncludingDescendantOf(
this, targetInKnownToBeHandledScope->SubtreeRoot())) { this, targetInKnownToBeHandledScope->SubtreeRoot())) {
// Part of step 11.4. // Part of step 11.4.
// "If target's root is a shadow-including inclusive ancestor of // "If target's root is a shadow-including inclusive ancestor of