Commit 2bc72543 authored by Edgar Chen's avatar Edgar Chen
Browse files

Bug 1718796 - Use DocShell to get last transaction id of root PresContext; r=smaug 

Differential Revision: https://phabricator.services.mozilla.com/D123464
parent b8cfdf05

dom/base/nsDOMWindowUtils.cpp

+14 −2
Original line number Diff line number Diff line
@@ -2748,12 +2748,24 @@ nsDOMWindowUtils::AdvanceTimeAndRefresh(int64_t aMilliseconds) { 


NS_IMETHODIMP

nsDOMWindowUtils::GetLastTransactionId(uint64_t* aLastTransactionId) {

  nsPresContext* presContext = GetPresContext();

  nsCOMPtr<nsIDocShell> docShell = GetDocShell();

  if (!docShell) {

    return NS_ERROR_UNEXPECTED;

  }



  nsCOMPtr<nsIDocShellTreeItem> rootTreeItem;

  docShell->GetInProcessRootTreeItem(getter_AddRefs(rootTreeItem));

  docShell = do_QueryInterface(rootTreeItem);

  if (!docShell) {

    return NS_ERROR_UNEXPECTED;

  }



  nsPresContext* presContext = docShell->GetPresContext();

  if (!presContext) {

    return NS_ERROR_UNEXPECTED;

  }



  nsRefreshDriver* driver = presContext->GetRootPresContext()->RefreshDriver();

  nsRefreshDriver* driver = presContext->RefreshDriver();

  *aLastTransactionId = uint64_t(driver->LastTransactionId());

  return NS_OK;

}