1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56
   57
   58
   59
   60
   61
   62
   63
   64
   65
   66
   67
   68
   69
   70
   71
   72
   73
   74
   75
   76
   77
   78
   79
   80
   81
   82
   83
   84
   85
   86
   87
   88
   89
   90
   91
   92
   93
   94
   95
   96
   97
   98
   99
  100
  101
  102
  103
  104
  105
  106
  107
  108
  109
  110
  111
  112
  113
  114
  115
  116
  117
  118
  119
  120
  121
  122


ash / system / human_presence / lock_on_leave_controller.cc [blame]

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ash/system/human_presence/lock_on_leave_controller.h"

#include <optional>

#include "ash/shell.h"
#include "base/functional/bind.h"
#include "chromeos/ash/components/dbus/human_presence/human_presence_dbus_client.h"
#include "chromeos/ash/components/human_presence/human_presence_configuration.h"

namespace ash {
namespace {

// Helper for EnableHpsSense.
void EnableLockOnLeaveViaDBus() {
  const auto config = hps::GetEnableLockOnLeaveConfig();
  if (config.has_value()) {
    HumanPresenceDBusClient::Get()->EnableHpsSense(config.value());
    LOG(ERROR) << "LockOnLeaveController: enabling HpsSense from chrome.";
  } else {
    LOG(ERROR)
        << "LockOnLeaveController: couldn't parse HpsSense configuration.";
  }
}

// Helper for DisableHpsSense.
void DisableLockOnLeaveViaDBus() {
  HumanPresenceDBusClient::Get()->DisableHpsSense();
}

}  // namespace

LockOnLeaveController::LockOnLeaveController() {
  human_presence_observation_.Observe(HumanPresenceDBusClient::Get());

  HumanPresenceDBusClient::Get()->WaitForServiceToBeAvailable(
      base::BindOnce(&LockOnLeaveController::OnServiceAvailable,
                     weak_ptr_factory_.GetWeakPtr()));

  // Orientation controller is instantiated before us in the shell.
  HumanPresenceOrientationController* orientation_controller =
      Shell::Get()->human_presence_orientation_controller();
  suitable_for_human_presence_ =
      orientation_controller->IsOrientationSuitable();
  orientation_observation_.Observe(orientation_controller);
}

LockOnLeaveController::~LockOnLeaveController() {
  human_presence_observation_.Reset();
  orientation_observation_.Reset();
}

void LockOnLeaveController::EnableLockOnLeave() {
  want_lock_on_leave_ = true;
  ReconfigViaDbus();
}

void LockOnLeaveController::DisableLockOnLeave() {
  want_lock_on_leave_ = false;
  ReconfigViaDbus();
}

// HumanPresenceOrientationObserver:
void LockOnLeaveController::OnOrientationChanged(
    bool suitable_for_human_presence) {
  suitable_for_human_presence_ = suitable_for_human_presence;
  ReconfigViaDbus();
}

void LockOnLeaveController::OnHpsSenseChanged(const hps::HpsResultProto&) {}

void LockOnLeaveController::OnHpsNotifyChanged(const hps::HpsResultProto&) {}

void LockOnLeaveController::OnRestart() {
  service_available_ = true;
  ReconfigViaDbus();
}

void LockOnLeaveController::OnShutdown() {
  // The service just stopped.
  service_available_ = false;
  configured_state_ = ConfiguredLockOnLeaveState::kDisabled;
}

void LockOnLeaveController::OnServiceAvailable(const bool service_available) {
  service_available_ = service_available;
  ReconfigViaDbus();
}

void LockOnLeaveController::ReconfigViaDbus() {
  if (!service_available_)
    return;

  // When chrome starts, it does not know the current configured_state_, because
  // it could be left enabled from previous chrome session, disable it so that
  // the new configuration can apply.
  if (configured_state_ == ConfiguredLockOnLeaveState::kUnknown) {
    DisableLockOnLeaveViaDBus();
    configured_state_ = ConfiguredLockOnLeaveState::kDisabled;
  }

  // Wanted state should be either kEnabled or kDisabled.
  const ConfiguredLockOnLeaveState wanted_state =
      want_lock_on_leave_ && suitable_for_human_presence_
          ? ConfiguredLockOnLeaveState::kEnabled
          : ConfiguredLockOnLeaveState::kDisabled;

  // Return if already configured to the wanted state.
  if (wanted_state == configured_state_)
    return;

  if (wanted_state == ConfiguredLockOnLeaveState::kEnabled) {
    EnableLockOnLeaveViaDBus();
  } else {
    DisableLockOnLeaveViaDBus();
  }
  configured_state_ = wanted_state;
}
}  // namespace ash