void
nsSHEntryShared::RemoveFromExpirationTracker()
{
if (gHistoryTracker && GetExpirationState()->IsTracked()) {
gHistoryTracker->RemoveObject(this);
}
}
nsresult nsSHEntryShared::SetContentViewer(nsIContentViewer* aViewer) {
MOZ_ASSERT(!aViewer || !mContentViewer,
"SHEntryShared already contains viewer");
if (mContentViewer || !aViewer) {
DropPresentationState();
}
// If we're setting mContentViewer to null, state should already be cleared
// in the DropPresentationState() call above; If we're setting it to a
// non-null content viewer, the entry shouldn't have been tracked either.
MOZ_ASSERT(!GetExpirationState()->IsTracked());
mContentViewer = aViewer;
if (mContentViewer) {
// mSHistory is only set for root entries, but in general bfcache only
// applies to root entries as well. BFCache for subframe navigation has been
// disabled since 2005 in bug 304860.
if (nsCOMPtr<nsISHistory> shistory = do_QueryReferent(mSHistory)) {
shistory->AddToExpirationTracker(this);
}
// Store observed document in strong pointer in case it is removed from
// the contentviewer
mDocument = mContentViewer->GetDocument();
if (mDocument) {
mDocument->SetBFCacheEntry(this);
mDocument->AddMutationObserver(this);
}
}
return NS_OK;
}
void
nsSHEntryShared::RemoveFromExpirationTracker()
{
nsCOMPtr<nsISHistory> shistory = do_QueryReferent(mSHistory);
if (shistory && GetExpirationState()->IsTracked()) {
shistory->RemoveFromExpirationTracker(this);
}
}
