| // Copyright 2020 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/callback_list.h" |
| |
| #include <utility> |
| |
| #include "base/functional/callback.h" |
| |
| namespace base { |
| |
| CallbackListSubscription::CallbackListSubscription() = default; |
| |
| CallbackListSubscription::CallbackListSubscription(base::OnceClosure closure) |
| : closure_(std::move(closure)) {} |
| |
| CallbackListSubscription::CallbackListSubscription( |
| CallbackListSubscription&& subscription) |
| : closure_(std::move(subscription.closure_)) {} |
| |
| CallbackListSubscription& CallbackListSubscription::operator=( |
| CallbackListSubscription&& subscription) { |
| // Note: This still works properly for self-assignment. |
| Run(); |
| closure_ = std::move(subscription.closure_); |
| return *this; |
| } |
| |
| CallbackListSubscription::~CallbackListSubscription() { |
| Run(); |
| } |
| |
| void CallbackListSubscription::Run() { |
| if (closure_) |
| std::move(closure_).Run(); |
| } |
| |
| } // namespace base |