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// Copyright 2013 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 "base/power_monitor/power_monitor.h"
#include <utility>
#include "base/power_monitor/power_monitor_source.h"
namespace base {
static PowerMonitor* g_power_monitor = NULL;
PowerMonitor::PowerMonitor(scoped_ptr<PowerMonitorSource> source)
: observers_(new ObserverListThreadSafe<PowerObserver>()),
source_(std::move(source)) {
DCHECK(!g_power_monitor);
g_power_monitor = this;
}
PowerMonitor::~PowerMonitor() {
DCHECK_EQ(this, g_power_monitor);
g_power_monitor = NULL;
}
// static
PowerMonitor* PowerMonitor::Get() {
return g_power_monitor;
}
void PowerMonitor::AddObserver(PowerObserver* obs) {
observers_->AddObserver(obs);
}
void PowerMonitor::RemoveObserver(PowerObserver* obs) {
observers_->RemoveObserver(obs);
}
PowerMonitorSource* PowerMonitor::Source() {
return source_.get();
}
bool PowerMonitor::IsOnBatteryPower() {
return source_->IsOnBatteryPower();
}
void PowerMonitor::NotifyPowerStateChange(bool battery_in_use) {
DVLOG(1) << "PowerStateChange: " << (battery_in_use ? "On" : "Off")
<< " battery";
observers_->Notify(FROM_HERE, &PowerObserver::OnPowerStateChange,
battery_in_use);
}
void PowerMonitor::NotifySuspend() {
DVLOG(1) << "Power Suspending";
observers_->Notify(FROM_HERE, &PowerObserver::OnSuspend);
}
void PowerMonitor::NotifyResume() {
DVLOG(1) << "Power Resuming";
observers_->Notify(FROM_HERE, &PowerObserver::OnResume);
}
} // namespace base
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