blob: 9f8252b0763758df7de6ab7e494988d61164dbfb [file] [log] [blame]
// 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 <memory>
#include <string>
#include "base/callback_list.h"
#include "base/system/sys_info.h"
#include "components/version_info/version_info.h"
namespace syncer {
class DeviceInfo;
// Interface for providing sync specific information about the
// local device.
class LocalDeviceInfoProvider {
using Subscription = base::CallbackList<void(void)>::Subscription;
virtual ~LocalDeviceInfoProvider() = default;
virtual version_info::Channel GetChannel() const = 0;
// Returns sync's representation of the local device info, or nullptr if the
// device info is unavailable (e.g. Initialize() hasn't been called). The
// returned object is fully owned by LocalDeviceInfoProvider; it must not be
// freed by the caller and should not be stored.
virtual const DeviceInfo* GetLocalDeviceInfo() const = 0;
// Registers a callback to be called when local device info becomes available.
// The callback will remain registered until the
// returned Subscription is destroyed, which must occur before the
// CallbackList is destroyed.
virtual std::unique_ptr<Subscription> RegisterOnInitializedCallback(
const base::RepeatingClosure& callback) WARN_UNUSED_RESULT = 0;
class MutableLocalDeviceInfoProvider : public LocalDeviceInfoProvider {
virtual void Initialize(const std::string& cache_guid,
const std::string& client_name,
const base::SysInfo::HardwareInfo& hardware_info) = 0;
virtual void Clear() = 0;
// Updates the local device's client name. Initialize() must be called before
// calling this function.
virtual void UpdateClientName(const std::string& client_name) = 0;
} // namespace syncer