OLD | NEW |
(Empty) | |
| 1 // Copyright 2017 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "chromeos/components/tether/host_scan_device_prioritizer_impl.h" |
| 6 |
| 7 #include "base/memory/ptr_util.h" |
| 8 #include "base/values.h" |
| 9 #include "chromeos/components/tether/device_id_tether_network_guid_map.h" |
| 10 #include "chromeos/components/tether/pref_names.h" |
| 11 #include "chromeos/components/tether/tether_host_response_recorder.h" |
| 12 #include "chromeos/network/network_state.h" |
| 13 #include "chromeos/network/network_state_handler.h" |
| 14 #include "components/prefs/pref_registry_simple.h" |
| 15 #include "components/prefs/pref_service.h" |
| 16 |
| 17 namespace chromeos { |
| 18 |
| 19 namespace tether { |
| 20 |
| 21 namespace { |
| 22 |
| 23 cryptauth::RemoteDevice Move(const cryptauth::RemoteDevice& remote_device) { |
| 24 return remote_device; |
| 25 } |
| 26 |
| 27 std::unique_ptr<ManagedState> Move( |
| 28 std::unique_ptr<ManagedState>& tether_network_state) { |
| 29 return std::move(tether_network_state); |
| 30 } |
| 31 |
| 32 } // namespace |
| 33 |
| 34 HostScanDevicePrioritizerImpl::HostScanDevicePrioritizerImpl( |
| 35 TetherHostResponseRecorder* tether_host_response_recorder, |
| 36 DeviceIdTetherNetworkGuidMap* device_id_tether_network_guid_map) |
| 37 : tether_host_response_recorder_(tether_host_response_recorder), |
| 38 device_id_tether_network_guid_map_(device_id_tether_network_guid_map) {} |
| 39 |
| 40 HostScanDevicePrioritizerImpl::~HostScanDevicePrioritizerImpl() {} |
| 41 |
| 42 void HostScanDevicePrioritizerImpl::SortByHostScanOrder( |
| 43 std::vector<cryptauth::RemoteDevice>* remote_devices) const { |
| 44 SortNetworks(remote_devices); |
| 45 } |
| 46 |
| 47 void HostScanDevicePrioritizerImpl::SortTetherNetworkList( |
| 48 NetworkStateHandler::ManagedStateList* tether_networks) const { |
| 49 SortNetworks(tether_networks); |
| 50 } |
| 51 |
| 52 template <typename T> |
| 53 void HostScanDevicePrioritizerImpl::SortNetworks( |
| 54 std::vector<T>* list_to_sort) const { |
| 55 // First, fetch the hosts which have previously responded. |
| 56 std::vector<std::string> prioritized_ids = |
| 57 tether_host_response_recorder_->GetPreviouslyAvailableHostIds(); |
| 58 |
| 59 std::vector<std::string> previously_connectable_host_ids = |
| 60 tether_host_response_recorder_->GetPreviouslyConnectedHostIds(); |
| 61 if (!previously_connectable_host_ids.empty()) { |
| 62 // If there is a most-recently connectable host, insert it at the front of |
| 63 // the list. |
| 64 prioritized_ids.insert(prioritized_ids.begin(), |
| 65 previously_connectable_host_ids[0]); |
| 66 } |
| 67 |
| 68 // Iterate from the last stored ID to the first stored ID. This ensures that |
| 69 // the items at the front of the list end up in the front of the prioritized |
| 70 // |list_to_sort| vector. |
| 71 for (auto prioritized_it = prioritized_ids.rbegin(); |
| 72 prioritized_it != prioritized_ids.rend(); ++prioritized_it) { |
| 73 // Iterate through |list_to_sort| to see if a device ID exists which is |
| 74 // equal to |stored_id|. If one exists, remove it from its previous |
| 75 // position in the list and add it at the front instead. |
| 76 for (auto list_to_sort_it = list_to_sort->begin(); |
| 77 list_to_sort_it != list_to_sort->end(); ++list_to_sort_it) { |
| 78 if (GetDeviceId(*list_to_sort_it) != *prioritized_it) { |
| 79 continue; |
| 80 } |
| 81 |
| 82 T entry_to_move = Move(*list_to_sort_it); |
| 83 list_to_sort->erase(list_to_sort_it); |
| 84 list_to_sort->emplace(list_to_sort->begin(), Move(entry_to_move)); |
| 85 break; |
| 86 } |
| 87 } |
| 88 } |
| 89 |
| 90 std::string HostScanDevicePrioritizerImpl::GetDeviceId( |
| 91 const cryptauth::RemoteDevice& remote_device) const { |
| 92 return remote_device.GetDeviceId(); |
| 93 } |
| 94 |
| 95 std::string HostScanDevicePrioritizerImpl::GetDeviceId( |
| 96 const std::unique_ptr<ManagedState>& tether_network_state) const { |
| 97 NetworkState* network_state = |
| 98 static_cast<NetworkState*>(tether_network_state.get()); |
| 99 return device_id_tether_network_guid_map_->GetDeviceIdForTetherNetworkGuid( |
| 100 network_state->guid()); |
| 101 } |
| 102 |
| 103 } // namespace tether |
| 104 |
| 105 } // namespace chromeos |
OLD | NEW |