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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "GlobalTeardownObserver.h"
#include "mozilla/Sprintf.h"
#include "mozilla/dom/Document.h"
namespace mozilla {
GlobalTeardownObserver::GlobalTeardownObserver() = default;
GlobalTeardownObserver::GlobalTeardownObserver(nsIGlobalObject* aGlobalObject,
bool aHasOrHasHadOwnerWindow)
: mHasOrHasHadOwnerWindow(aHasOrHasHadOwnerWindow) {
BindToOwner(aGlobalObject);
}
GlobalTeardownObserver::~GlobalTeardownObserver() {
if (mParentObject) {
mParentObject->RemoveGlobalTeardownObserver(this);
}
}
void GlobalTeardownObserver::BindToOwner(nsIGlobalObject* aOwner) {
MOZ_ASSERT(!mParentObject);
if (aOwner) {
mParentObject = aOwner;
aOwner->AddGlobalTeardownObserver(this);
// Let's cache the result of this QI for fast access and off main thread
// usage
mOwnerWindow =
nsCOMPtr<nsPIDOMWindowInner>(do_QueryInterface(aOwner)).get();
if (mOwnerWindow) {
mHasOrHasHadOwnerWindow = true;
}
}
}
void GlobalTeardownObserver::DisconnectFromOwner() {
if (mParentObject) {
mParentObject->RemoveGlobalTeardownObserver(this);
}
mOwnerWindow = nullptr;
mParentObject = nullptr;
}
nsresult GlobalTeardownObserver::CheckCurrentGlobalCorrectness() const {
NS_ENSURE_STATE(!mHasOrHasHadOwnerWindow || mOwnerWindow);
// Main-thread.
if (mOwnerWindow && !mOwnerWindow->IsCurrentInnerWindow()) {
return NS_ERROR_FAILURE;
}
if (NS_IsMainThread()) {
return NS_OK;
}
if (!mParentObject) {
return NS_ERROR_FAILURE;
}
if (mParentObject->IsDying()) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
}; // namespace mozilla
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