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// Copyright 2014 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 "device/battery/battery_monitor_impl.h"
#include <utility>
#include "base/bind.h"
#include "base/logging.h"
namespace device {
// static
void BatteryMonitorImpl::Create(
mojo::InterfaceRequest<BatteryMonitor> request) {
new BatteryMonitorImpl(std::move(request));
}
BatteryMonitorImpl::BatteryMonitorImpl(
mojo::InterfaceRequest<BatteryMonitor> request)
: binding_(this, std::move(request)), status_to_report_(false) {
// NOTE: DidChange may be called before AddCallback returns. This is done to
// report current status.
subscription_ = BatteryStatusService::GetInstance()->AddCallback(
base::Bind(&BatteryMonitorImpl::DidChange, base::Unretained(this)));
}
BatteryMonitorImpl::~BatteryMonitorImpl() {
}
void BatteryMonitorImpl::QueryNextStatus(
const BatteryStatusCallback& callback) {
if (!callback_.is_null()) {
DVLOG(1) << "Overlapped call to QueryNextStatus!";
delete this;
return;
}
callback_ = callback;
if (status_to_report_)
ReportStatus();
}
void BatteryMonitorImpl::RegisterSubscription() {
}
void BatteryMonitorImpl::DidChange(const BatteryStatus& battery_status) {
status_ = battery_status;
status_to_report_ = true;
if (!callback_.is_null())
ReportStatus();
}
void BatteryMonitorImpl::ReportStatus() {
callback_.Run(status_.Clone());
callback_.reset();
status_to_report_ = false;
}
} // namespace device
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