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// Copyright (c) 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 "chromeos/dbus/system_clock_client.h"
#include "base/bind.h"
#include "chromeos/dbus/fake_system_clock_client.h"
#include "dbus/bus.h"
#include "dbus/message.h"
#include "dbus/object_path.h"
#include "dbus/object_proxy.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
namespace chromeos {
// The SystemClockClient implementation used in production.
class SystemClockClientImpl : public SystemClockClient {
public:
explicit SystemClockClientImpl(dbus::Bus* bus)
: system_clock_proxy_(NULL),
weak_ptr_factory_(this) {
system_clock_proxy_ = bus->GetObjectProxy(
system_clock::kSystemClockServiceName,
dbus::ObjectPath(system_clock::kSystemClockServicePath));
// Monitor the D-Bus signal for TimeUpdated changes.
system_clock_proxy_->ConnectToSignal(
system_clock::kSystemClockInterface,
system_clock::kSystemClockUpdated,
base::Bind(&SystemClockClientImpl::TimeUpdatedReceived,
weak_ptr_factory_.GetWeakPtr()),
base::Bind(&SystemClockClientImpl::TimeUpdatedConnected,
weak_ptr_factory_.GetWeakPtr()));
}
virtual ~SystemClockClientImpl() {
}
// SystemClockClient overrides:
virtual void AddObserver(Observer* observer) OVERRIDE {
observers_.AddObserver(observer);
}
virtual void RemoveObserver(Observer* observer) OVERRIDE {
observers_.RemoveObserver(observer);
}
virtual bool HasObserver(Observer* observer) OVERRIDE {
return observers_.HasObserver(observer);
}
private:
// Called when a TimeUpdated signal is received.
void TimeUpdatedReceived(dbus::Signal* signal) {
VLOG(1) << "TimeUpdated signal received: " << signal->ToString();
dbus::MessageReader reader(signal);
FOR_EACH_OBSERVER(Observer, observers_, SystemClockUpdated());
}
// Called when the TimeUpdated signal is initially connected.
void TimeUpdatedConnected(const std::string& interface_name,
const std::string& signal_name,
bool success) {
LOG_IF(ERROR, !success)
<< "Failed to connect to TimeUpdated signal.";
}
dbus::ObjectProxy* system_clock_proxy_;
ObserverList<Observer> observers_;
// Note: This should remain the last member so it'll be destroyed and
// invalidate its weak pointers before any other members are destroyed.
base::WeakPtrFactory<SystemClockClientImpl> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(SystemClockClientImpl);
};
SystemClockClient::SystemClockClient() {
}
SystemClockClient::~SystemClockClient() {
}
// static
SystemClockClient* SystemClockClient::Create(
DBusClientImplementationType type,
dbus::Bus* bus) {
if (type == REAL_DBUS_CLIENT_IMPLEMENTATION) {
return new SystemClockClientImpl(bus);
}
DCHECK_EQ(STUB_DBUS_CLIENT_IMPLEMENTATION, type);
return new FakeSystemClockClient();
}
} // namespace chromeos
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