diff options
Diffstat (limited to 'dom/base/FragmentOrElement.cpp')
| -rw-r--r-- | dom/base/FragmentOrElement.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/dom/base/FragmentOrElement.cpp b/dom/base/FragmentOrElement.cpp index ccfe960cb7..3438c0c733 100644 --- a/dom/base/FragmentOrElement.cpp +++ b/dom/base/FragmentOrElement.cpp @@ -1022,7 +1022,12 @@ nsIContent::GetEventTargetParent(EventChainPreVisitor& aVisitor) nsContentUtils::Retarget(relatedTargetAsNode, this); nsCOMPtr<nsINode> targetInKnownToBeHandledScope = 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())) { // Part of step 11.4. // "If target's root is a shadow-including inclusive ancestor of |