| // Copyright 2014 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "services/device/battery/battery_monitor_impl.h" |
| |
| #include <utility> |
| |
| #include "base/bind.h" |
| #include "base/logging.h" |
| #include "base/memory/ptr_util.h" |
| #include "mojo/public/cpp/bindings/self_owned_receiver.h" |
| |
| namespace device { |
| |
| // static |
| void BatteryMonitorImpl::Create( |
| mojo::PendingReceiver<mojom::BatteryMonitor> receiver) { |
| auto* impl = new BatteryMonitorImpl; |
| impl->receiver_ = |
| mojo::MakeSelfOwnedReceiver(base::WrapUnique(impl), std::move(receiver)); |
| } |
| |
| BatteryMonitorImpl::BatteryMonitorImpl() : status_to_report_(false) { |
| // NOTE: DidChange may be called before AddCallback returns. This is done to |
| // report current status. |
| subscription_ = |
| BatteryStatusService::GetInstance()->AddCallback(base::BindRepeating( |
| &BatteryMonitorImpl::DidChange, base::Unretained(this))); |
| } |
| |
| BatteryMonitorImpl::~BatteryMonitorImpl() {} |
| |
| void BatteryMonitorImpl::QueryNextStatus(QueryNextStatusCallback callback) { |
| if (!callback_.is_null()) { |
| DVLOG(1) << "Overlapped call to QueryNextStatus!"; |
| receiver_->Close(); |
| return; |
| } |
| callback_ = std::move(callback); |
| |
| if (status_to_report_) |
| ReportStatus(); |
| } |
| |
| void BatteryMonitorImpl::RegisterSubscription() {} |
| |
| void BatteryMonitorImpl::DidChange(const mojom::BatteryStatus& battery_status) { |
| status_ = battery_status; |
| status_to_report_ = true; |
| |
| if (!callback_.is_null()) |
| ReportStatus(); |
| } |
| |
| void BatteryMonitorImpl::ReportStatus() { |
| std::move(callback_).Run(status_.Clone()); |
| |
| status_to_report_ = false; |
| } |
| |
| } // namespace device |