| // Copyright 2020 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "third_party/blink/renderer/platform/context_lifecycle_observer.h" |
| |
| #include "third_party/blink/renderer/platform/context_lifecycle_notifier.h" |
| |
| namespace blink { |
| |
| void ContextLifecycleObserver::ObserverListWillBeCleared() { |
| notifier_ = nullptr; |
| } |
| |
| void ContextLifecycleObserver::SetContextLifecycleNotifier( |
| ContextLifecycleNotifier* notifier) { |
| if (notifier == notifier_) |
| return; |
| |
| if (notifier_) |
| notifier_->RemoveContextLifecycleObserver(this); |
| |
| notifier_ = notifier; |
| |
| if (notifier_) |
| notifier_->AddContextLifecycleObserver(this); |
| } |
| |
| void ContextLifecycleObserver::Trace(Visitor* visitor) { |
| visitor->Trace(notifier_); |
| } |
| |
| } // namespace blink |
