File: power_monitor_test_impl.cc

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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "content/shell/common/power_monitor_test_impl.h"

#include <memory>
#include <utility>

#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/self_owned_receiver.h"

namespace content {

// static
void PowerMonitorTestImpl::MakeSelfOwnedReceiver(
    mojo::PendingReceiver<mojom::PowerMonitorTest> receiver) {
  mojo::MakeSelfOwnedReceiver(std::make_unique<PowerMonitorTestImpl>(),
                              std::move(receiver));
}

PowerMonitorTestImpl::PowerMonitorTestImpl() {
  base::PowerMonitor::GetInstance()->AddPowerStateObserver(this);
}

PowerMonitorTestImpl::~PowerMonitorTestImpl() {
  base::PowerMonitor::GetInstance()->RemovePowerStateObserver(this);
}

void PowerMonitorTestImpl::QueryNextState(QueryNextStateCallback callback) {
  // Do not allow overlapping call.
  DCHECK(callback_.is_null());
  callback_ = std::move(callback);

  if (need_to_report_)
    ReportState();
}

void PowerMonitorTestImpl::OnBatteryPowerStatusChange(
    base::PowerStateObserver::BatteryPowerStatus battery_power_status) {
  battery_power_status_ = battery_power_status;
  need_to_report_ = true;

  if (!callback_.is_null())
    ReportState();
}

void PowerMonitorTestImpl::ReportState() {
  std::move(callback_).Run(battery_power_status_);
  need_to_report_ = false;
}

}  // namespace content