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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.
#ifndef CHROMEOS_ASH_COMPONENTS_TETHER_TETHER_HOST_FETCHER_IMPL_H_
#define CHROMEOS_ASH_COMPONENTS_TETHER_TETHER_HOST_FETCHER_IMPL_H_
#include <memory>
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "chromeos/ash/components/multidevice/remote_device_ref.h"
#include "chromeos/ash/components/tether/tether_host_fetcher.h"
#include "chromeos/ash/services/device_sync/public/cpp/device_sync_client.h"
#include "chromeos/ash/services/multidevice_setup/public/cpp/multidevice_setup_client.h"
namespace ash::tether {
// Concrete TetherHostFetcher implementation. Despite the asynchronous function
// prototypes, callbacks are invoked synchronously.
//
// Note: TetherHostFetcherImpl, and the Tether feature as a whole, is currently
// in the middle of a migration from using DeviceSyncClient and eventually to
// MultiDeviceSetupClient. Its constructor accepts both objects, but either may
// be null. Once Tether has been fully migrated, DeviceSyncClient will be ripped
// out of this class. See https://crbug.com/848956.
class TetherHostFetcherImpl
: public TetherHostFetcher,
public device_sync::DeviceSyncClient::Observer,
public multidevice_setup::MultiDeviceSetupClient::Observer {
public:
class Factory {
public:
static std::unique_ptr<TetherHostFetcher> Create(
device_sync::DeviceSyncClient* device_sync_client,
multidevice_setup::MultiDeviceSetupClient* multidevice_setup_client);
static void SetFactoryForTesting(Factory* factory);
protected:
virtual std::unique_ptr<TetherHostFetcher> CreateInstance(
device_sync::DeviceSyncClient* device_sync_client,
multidevice_setup::MultiDeviceSetupClient*
multidevice_setup_client) = 0;
private:
static Factory* factory_instance_;
};
TetherHostFetcherImpl(const TetherHostFetcherImpl&) = delete;
TetherHostFetcherImpl& operator=(const TetherHostFetcherImpl&) = delete;
~TetherHostFetcherImpl() override;
// device_sync::DeviceSyncClient::Observer:
void OnNewDevicesSynced() override;
void OnReady() override;
// multidevice_setup::MultiDeviceSetupClient::Observer:
void OnHostStatusChanged(
const multidevice_setup::MultiDeviceSetupClient::HostStatusWithDevice&
host_status_with_device) override;
void OnFeatureStatesChanged(
const multidevice_setup::MultiDeviceSetupClient::FeatureStatesMap&
feature_states_map) override;
protected:
TetherHostFetcherImpl(
device_sync::DeviceSyncClient* device_sync_client,
multidevice_setup::MultiDeviceSetupClient* multidevice_setup_client_);
private:
void CacheCurrentTetherHost();
std::optional<multidevice::RemoteDeviceRef> GenerateTetherHost();
raw_ptr<device_sync::DeviceSyncClient> device_sync_client_;
raw_ptr<multidevice_setup::MultiDeviceSetupClient> multidevice_setup_client_;
base::WeakPtrFactory<TetherHostFetcherImpl> weak_ptr_factory_{this};
};
} // namespace ash::tether
#endif // CHROMEOS_ASH_COMPONENTS_TETHER_TETHER_HOST_FETCHER_IMPL_H_
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