Revert of HID-detection screen moved to screenContext.

chrome/browser/chromeos/login/screens/hid_detection_screen.cc

 // 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 "chrome/browser/chromeos/login/screens/hid_detection_screen.h"
 
-#include "base/bind.h"
-#include "base/metrics/histogram.h"
-#include "base/strings/string_number_conversions.h"
-#include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chromeos/login/screens/base_screen_delegate.h"
-#include "chrome/browser/chromeos/login/screens/hid_detection_view.h"
 #include "chrome/browser/chromeos/login/wizard_controller.h"
-#include "chrome/grit/generated_resources.h"
-#include "device/bluetooth/bluetooth_adapter_factory.h"
-#include "ui/base/l10n/l10n_util.h"
-
-namespace {
-
-// Possible ui-states for device-blocks.
-const char kSearchingState[] = "searching";
-const char kUSBConnectedState[] = "connected";
-const char kBTPairedState[] = "paired";
-const char kBTPairingState[] = "pairing";
-
-// Standard length of pincode for pairing BT keyboards.
-const int kPincodeLength = 6;
-
-bool DeviceIsPointing(device::BluetoothDevice::DeviceType device_type) {
-  return device_type == device::BluetoothDevice::DEVICE_MOUSE ||
-         device_type == device::BluetoothDevice::DEVICE_KEYBOARD_MOUSE_COMBO ||
-         device_type == device::BluetoothDevice::DEVICE_TABLET;
-}
-
-bool DeviceIsPointing(const device::InputServiceLinux::InputDeviceInfo& info) {
-  return info.is_mouse || info.is_touchpad || info.is_touchscreen ||
-         info.is_tablet;
-}
-
-bool DeviceIsKeyboard(device::BluetoothDevice::DeviceType device_type) {
-  return device_type == device::BluetoothDevice::DEVICE_KEYBOARD ||
-         device_type == device::BluetoothDevice::DEVICE_KEYBOARD_MOUSE_COMBO;
-}
-
-}  // namespace
 
 namespace chromeos {
 
 HIDDetectionScreen::HIDDetectionScreen(BaseScreenDelegate* base_screen_delegate,
-                                       HIDDetectionView* view)
-    : HIDDetectionModel(base_screen_delegate),
-      view_(view),
-      mouse_is_pairing_(false),
-      pointing_device_connect_type_(InputDeviceInfo::TYPE_UNKNOWN),
-      keyboard_is_pairing_(false),
-      keyboard_device_connect_type_(InputDeviceInfo::TYPE_UNKNOWN),
-      switch_on_adapter_when_ready_(false),
-      showing_(false),
-      weak_ptr_factory_(this) {
-  DCHECK(view_);
-  if (view_)
-    view_->Bind(*this);
-
+                                       HIDDetectionScreenActor* actor)
+    : BaseScreen(base_screen_delegate), actor_(actor) {
+  DCHECK(actor_);
+  if (actor_)
+    actor_->SetDelegate(this);
 }
 
 HIDDetectionScreen::~HIDDetectionScreen() {
-  adapter_initially_powered_.reset();
-  input_service_proxy_.RemoveObserver(this);
-  if (view_)
-    view_->Unbind();
-  if (discovery_session_.get())
-    discovery_session_->Stop(base::Bind(&base::DoNothing),
-                             base::Bind(&base::DoNothing));
-  if (adapter_.get())
-    adapter_->RemoveObserver(this);
+  if (actor_)
+    actor_->SetDelegate(NULL);
 }
 
 void HIDDetectionScreen::PrepareToShow() {
-  if (view_)
-    view_->PrepareToShow();
 }
 
 void HIDDetectionScreen::Show() {
-  showing_ = true;
-  GetContextEditor().SetBoolean(kContextKeyNumKeysEnteredExpected, false);
-  SendPointingDeviceNotification();
-  SendKeyboardDeviceNotification();
-
-  input_service_proxy_.AddObserver(this);
-  UpdateDevices();
-
-  if (view_)
-    view_->Show();
+  if (actor_)
+    actor_->Show();
 }
 
 void HIDDetectionScreen::Hide() {
-  showing_ = false;
-  input_service_proxy_.RemoveObserver(this);
-  if (discovery_session_.get())
-    discovery_session_->Stop(base::Bind(&base::DoNothing),
-                             base::Bind(&base::DoNothing));
-  if (view_)
-    view_->Hide();
+  if (actor_)
+    actor_->Hide();
 }
 
-void HIDDetectionScreen::Initialize(::login::ScreenContext* context) {
-  HIDDetectionModel::Initialize(context);
-
-  device::BluetoothAdapterFactory::GetAdapter(
-      base::Bind(&HIDDetectionScreen::InitializeAdapter,
-                 weak_ptr_factory_.GetWeakPtr()));
+std::string HIDDetectionScreen::GetName() const {
+  return WizardController::kHIDDetectionScreenName;
 }
 
-void HIDDetectionScreen::OnContinueButtonClicked() {
-
-  ContinueScenarioType scenario_type;
-  if (!pointing_device_id_.empty() && !keyboard_device_id_.empty())
-    scenario_type = All_DEVICES_DETECTED;
-  else if (pointing_device_id_.empty())
-    scenario_type = KEYBOARD_DEVICE_ONLY_DETECTED;
-  else
-    scenario_type = POINTING_DEVICE_ONLY_DETECTED;
-
-  UMA_HISTOGRAM_ENUMERATION(
-      "HIDDetection.OOBEDevicesDetectedOnContinuePressed",
-      scenario_type,
-      CONTINUE_SCENARIO_TYPE_SIZE);
-
-  // Switch off BT adapter if it was off before the screen and no BT device
-  // connected.
-  bool adapter_is_powered =
-      adapter_.get() && adapter_->IsPresent() && adapter_->IsPowered();
-  bool use_bluetooth =
-      pointing_device_connect_type_ == InputDeviceInfo::TYPE_BLUETOOTH ||
-      keyboard_device_connect_type_ == InputDeviceInfo::TYPE_BLUETOOTH;
-  bool need_switching_off = adapter_initially_powered_ &&
-                            !(*adapter_initially_powered_);
-  if (adapter_is_powered && !use_bluetooth && need_switching_off) {
-    VLOG(1) << "Switching off BT adapter after HID OOBE screen as unused.";
-    adapter_->SetPowered(
-        false,
-        base::Bind(&base::DoNothing),
-        base::Bind(&HIDDetectionScreen::SetPoweredOffError,
-                   weak_ptr_factory_.GetWeakPtr()));
-  }
-
+void HIDDetectionScreen::OnExit() {
   Finish(BaseScreenDelegate::HID_DETECTION_COMPLETED);
 }
 
-void HIDDetectionScreen::CheckIsScreenRequired(
-      const base::Callback<void(bool)>& on_check_done) {
-  input_service_proxy_.GetDevices(
-      base::Bind(&HIDDetectionScreen::OnGetInputDevicesListForCheck,
-                 weak_ptr_factory_.GetWeakPtr(),
-                 on_check_done));
+void HIDDetectionScreen::OnActorDestroyed(HIDDetectionScreenActor* actor) {
+  if (actor_ == actor)
+    actor_ = NULL;
 }
 
-void HIDDetectionScreen::OnViewDestroyed(HIDDetectionView* view) {
-  if (view_ == view)
-    view_ = NULL;
-}
-
-void HIDDetectionScreen::RequestPinCode(device::BluetoothDevice* device) {
-  VLOG(1) << "RequestPinCode id = " << device->GetDeviceID()
-          << " name = " << device->GetName();
-  device->CancelPairing();
-}
-
-void HIDDetectionScreen::RequestPasskey(device::BluetoothDevice* device) {
-  VLOG(1) << "RequestPassKey id = " << device->GetDeviceID()
-          << " name = " << device->GetName();
-  device->CancelPairing();
-}
-
-void HIDDetectionScreen::DisplayPinCode(device::BluetoothDevice* device,
-                                        const std::string& pincode) {
-  VLOG(1) << "DisplayPinCode id = " << device->GetDeviceID()
-          << " name = " << device->GetName();
-  GetContextEditor().SetString(kContextKeyPinCode, pincode);
-  SetKeyboardDeviceName_(base::UTF16ToUTF8(device->GetName()));
-  SendKeyboardDeviceNotification();
-}
-
-void HIDDetectionScreen::DisplayPasskey(
-    device::BluetoothDevice* device, uint32 passkey) {
-  VLOG(1) << "DisplayPassKey id = " << device->GetDeviceID()
-          << " name = " << device->GetName();
-  std::string pincode = base::UintToString(passkey);
-  pincode = std::string(kPincodeLength - pincode.length(), '0').append(pincode);
-  // No differences in UI for passkey and pincode authentication calls.
-  DisplayPinCode(device, pincode);
-}
-
-void HIDDetectionScreen::KeysEntered(
-    device::BluetoothDevice* device, uint32 entered) {
-  VLOG(1) << "Number of keys entered " << entered;
-  GetContextEditor()
-      .SetBoolean(kContextKeyNumKeysEnteredExpected, true)
-      .SetInteger(kContextKeyNumKeysEnteredPinCode, entered);
-  SendKeyboardDeviceNotification();
-}
-
-void HIDDetectionScreen::ConfirmPasskey(
-    device::BluetoothDevice* device, uint32 passkey) {
-  VLOG(1) << "Confirm Passkey";
-  device->CancelPairing();
-}
-
-void HIDDetectionScreen::AuthorizePairing(device::BluetoothDevice* device) {
-  // There is never any circumstance where this will be called, since the
-  // HID detection screen will only be used for outgoing pairing
-  // requests, but play it safe.
-  VLOG(1) << "Authorize pairing";
-  device->ConfirmPairing();
-}
-
-void HIDDetectionScreen::AdapterPresentChanged(
-    device::BluetoothAdapter* adapter, bool present) {
-  if (present && switch_on_adapter_when_ready_) {
-    VLOG(1) << "Switching on BT adapter on HID OOBE screen.";
-    adapter_initially_powered_.reset(new bool(adapter_->IsPowered()));
-    adapter_->SetPowered(
-        true,
-        base::Bind(&HIDDetectionScreen::StartBTDiscoverySession,
-                   weak_ptr_factory_.GetWeakPtr()),
-        base::Bind(&HIDDetectionScreen::SetPoweredError,
-                   weak_ptr_factory_.GetWeakPtr()));
-  }
-}
-
-void HIDDetectionScreen::TryPairingAsPointingDevice(
-    device::BluetoothDevice* device) {
-  if (pointing_device_id_.empty() &&
-      DeviceIsPointing(device->GetDeviceType()) &&
-      device->IsPairable() &&
-      !(device->IsConnected() && device->IsPaired()) &&
-      !mouse_is_pairing_) {
-    ConnectBTDevice(device);
-  }
-}
-
-void HIDDetectionScreen::TryPairingAsKeyboardDevice(
-    device::BluetoothDevice* device) {
-  if (keyboard_device_id_.empty() &&
-      DeviceIsKeyboard(device->GetDeviceType()) &&
-      device->IsPairable() &&
-      !(device->IsConnected() && device->IsPaired()) &&
-      !keyboard_is_pairing_) {
-    ConnectBTDevice(device);
-  }
-}
-
-void HIDDetectionScreen::ConnectBTDevice(device::BluetoothDevice* device) {
-  bool device_busy = (device->IsConnected() && device->IsPaired()) ||
-                      device->IsConnecting();
-  if (!device->IsPairable() || device_busy)
-    return;
-  device::BluetoothDevice::DeviceType device_type = device->GetDeviceType();
-
-  if (device_type == device::BluetoothDevice::DEVICE_MOUSE ||
-      device_type == device::BluetoothDevice::DEVICE_TABLET) {
-    if (mouse_is_pairing_)
-      return;
-    mouse_is_pairing_ = true;
-  } else if (device_type == device::BluetoothDevice::DEVICE_KEYBOARD) {
-    if (keyboard_is_pairing_)
-      return;
-    keyboard_is_pairing_ = true;
-  } else if (device_type ==
-      device::BluetoothDevice::DEVICE_KEYBOARD_MOUSE_COMBO) {
-    if (mouse_is_pairing_ && keyboard_is_pairing_)
-      return;
-    mouse_is_pairing_ = true;
-    keyboard_is_pairing_ = true;
-  }
-  device->Connect(this,
-            base::Bind(&HIDDetectionScreen::BTConnected,
-                       weak_ptr_factory_.GetWeakPtr(), device_type),
-            base::Bind(&HIDDetectionScreen::BTConnectError,
-                       weak_ptr_factory_.GetWeakPtr(),
-                       device->GetAddress(), device_type));
-}
-
-void HIDDetectionScreen::BTConnected(
-    device::BluetoothDevice::DeviceType device_type) {
-  if (DeviceIsPointing(device_type))
-    mouse_is_pairing_ = false;
-  if (DeviceIsKeyboard(device_type)) {
-    keyboard_is_pairing_ = false;
-    GetContextEditor()
-        .SetBoolean(kContextKeyNumKeysEnteredExpected, false)
-        .SetString(kContextKeyPinCode, "");
-    SendKeyboardDeviceNotification();
-  }
-}
-
-void HIDDetectionScreen::BTConnectError(
-    const std::string& address,
-    device::BluetoothDevice::DeviceType device_type,
-    device::BluetoothDevice::ConnectErrorCode error_code) {
-  LOG(WARNING) << "BTConnectError while connecting " << address
-               << " error code = " << error_code;
-  if (DeviceIsPointing(device_type))
-    mouse_is_pairing_ = false;
-  if (DeviceIsKeyboard(device_type)) {
-    keyboard_is_pairing_ = false;
-    GetContextEditor()
-        .SetInteger(kContextKeyNumKeysEnteredExpected, false)
-        .SetString(kContextKeyPinCode, "");
-    SendKeyboardDeviceNotification();
-  }
-
-  if (pointing_device_id_.empty() || keyboard_device_id_.empty())
-    UpdateDevices();
-}
-
-void HIDDetectionScreen::SendPointingDeviceNotification() {
-  std::string state;
-  if (pointing_device_id_.empty())
-    state = kSearchingState;
-  else if (pointing_device_connect_type_ == InputDeviceInfo::TYPE_BLUETOOTH)
-    state = kBTPairedState;
-  else
-    state = kUSBConnectedState;
-  GetContextEditor().SetString(kContextKeyMouseState, state)
-                    .SetBoolean(
-      kContextKeyContinueButtonEnabled,
-      !(pointing_device_id_.empty() && keyboard_device_id_.empty()));
-}
-
-void HIDDetectionScreen::SendKeyboardDeviceNotification() {
-  ContextEditor editor = GetContextEditor();
-  editor.SetString(kContextKeyKeyboardLabel, "");
-  if (keyboard_device_id_.empty()) {
-    if (keyboard_is_pairing_) {
-      editor.SetString(kContextKeyKeyboardState, kBTPairingState)
-            .SetString(
-          kContextKeyKeyboardLabel,
-          l10n_util::GetStringFUTF8(
-              IDS_HID_DETECTION_BLUETOOTH_REMOTE_PIN_CODE_REQUEST,
-              base::UTF8ToUTF16(keyboard_device_name_)));
-    } else {
-      editor.SetString(kContextKeyKeyboardState, kSearchingState);
-    }
-  } else {
-    if (keyboard_device_connect_type_ == InputDeviceInfo::TYPE_BLUETOOTH) {
-      editor.SetString(kContextKeyKeyboardState, kBTPairedState)
-            .SetString(
-                kContextKeyKeyboardLabel,
-                l10n_util::GetStringFUTF16(
-                    IDS_HID_DETECTION_PAIRED_BLUETOOTH_KEYBOARD,
-                    base::UTF8ToUTF16(keyboard_device_name_)));
-    } else {
-      editor.SetString(kContextKeyKeyboardState, kUSBConnectedState);
-    }
-  }
-  editor.SetString(kContextKeyKeyboardDeviceName, keyboard_device_name_)
-        .SetBoolean(
-            kContextKeyContinueButtonEnabled,
-            !(pointing_device_id_.empty() && keyboard_device_id_.empty()));
-}
-
-void HIDDetectionScreen::SetKeyboardDeviceName_(std::string name) {
-  if (!(keyboard_device_id_.empty()) && name.empty())
-    name = l10n_util::GetStringUTF8(IDS_HID_DETECTION_DEFAULT_KEYBOARD_NAME);
-  keyboard_device_name_ = name;
-}
-
-void HIDDetectionScreen::DeviceAdded(
-    device::BluetoothAdapter* adapter, device::BluetoothDevice* device) {
-  VLOG(1) << "BT input device added id = " << device->GetDeviceID() <<
-      " name = " << device->GetName();
-  TryPairingAsPointingDevice(device);
-  TryPairingAsKeyboardDevice(device);
-}
-
-void HIDDetectionScreen::DeviceChanged(
-    device::BluetoothAdapter* adapter, device::BluetoothDevice* device) {
-  VLOG(1) << "BT device changed id = " << device->GetDeviceID() << " name = " <<
-      device->GetName();
-  TryPairingAsPointingDevice(device);
-  TryPairingAsKeyboardDevice(device);
-}
-
-void HIDDetectionScreen::DeviceRemoved(
-    device::BluetoothAdapter* adapter, device::BluetoothDevice* device) {
-  VLOG(1) << "BT device removed id = " << device->GetDeviceID() << " name = " <<
-      device->GetName();
-}
-
-void HIDDetectionScreen::OnInputDeviceAdded(
-    const InputDeviceInfo& info) {
-  VLOG(1) << "Input device added id = " << info.id << " name = " << info.name;
-  // TODO(merkulova): deal with all available device types, e.g. joystick.
-  if (!keyboard_device_id_.empty() && !pointing_device_id_.empty())
-    return;
-
-  if (pointing_device_id_.empty() && DeviceIsPointing(info)) {
-    pointing_device_id_ = info.id;
-    GetContextEditor().SetString(kContextKeyMouseDeviceName, info.name);
-    pointing_device_connect_type_ = info.type;
-    SendPointingDeviceNotification();
-  }
-  if (keyboard_device_id_.empty() && info.is_keyboard) {
-    keyboard_device_id_ = info.id;
-    keyboard_device_connect_type_ = info.type;
-    SetKeyboardDeviceName_(info.name);
-    SendKeyboardDeviceNotification();
-  }
-}
-
-void HIDDetectionScreen::OnInputDeviceRemoved(const std::string& id) {
-  if (id == keyboard_device_id_) {
-    keyboard_device_id_.clear();
-    keyboard_device_connect_type_ = InputDeviceInfo::TYPE_UNKNOWN;
-    SendKeyboardDeviceNotification();
-    UpdateDevices();
-  }
-  if (id == pointing_device_id_) {
-    pointing_device_id_.clear();
-    pointing_device_connect_type_ = InputDeviceInfo::TYPE_UNKNOWN;
-    SendPointingDeviceNotification();
-    UpdateDevices();
-  }
-}
-
-void HIDDetectionScreen::InitializeAdapter(
-    scoped_refptr<device::BluetoothAdapter> adapter) {
-  adapter_ = adapter;
-  CHECK(adapter_.get());
-
-  adapter_->AddObserver(this);
-  UpdateDevices();
-}
-
-void HIDDetectionScreen::StartBTDiscoverySession() {
-  adapter_->StartDiscoverySession(
-      base::Bind(&HIDDetectionScreen::OnStartDiscoverySession,
-                 weak_ptr_factory_.GetWeakPtr()),
-      base::Bind(&HIDDetectionScreen::FindDevicesError,
-                 weak_ptr_factory_.GetWeakPtr()));
-}
-
-void HIDDetectionScreen::ProcessConnectedDevicesList(
-    const std::vector<InputDeviceInfo>& devices) {
-  for (std::vector<InputDeviceInfo>::const_iterator it = devices.begin();
-       it != devices.end() &&
-       (pointing_device_id_.empty() || keyboard_device_id_.empty());
-       ++it) {
-    if (pointing_device_id_.empty() && DeviceIsPointing(*it)) {
-      pointing_device_id_ = it->id;
-      GetContextEditor().SetString(kContextKeyMouseDeviceName, it->name);
-      pointing_device_connect_type_ = it->type;
-      SendPointingDeviceNotification();
-    }
-    if (keyboard_device_id_.empty() && it->is_keyboard) {
-      keyboard_device_id_ = it->id;
-      SetKeyboardDeviceName_(it->name);
-      keyboard_device_connect_type_ = it->type;
-      SendKeyboardDeviceNotification();
-    }
-  }
-}
-
-void HIDDetectionScreen::TryInitiateBTDevicesUpdate() {
-  if ((pointing_device_id_.empty() || keyboard_device_id_.empty()) &&
-      adapter_.get()) {
-    if (!adapter_->IsPresent()) {
-      // Switch on BT adapter later when it's available.
-      switch_on_adapter_when_ready_ = true;
-    } else if (!adapter_->IsPowered()) {
-      VLOG(1) << "Switching on BT adapter on HID OOBE screen.";
-      adapter_initially_powered_.reset(new bool(false));
-      adapter_->SetPowered(
-          true,
-          base::Bind(&HIDDetectionScreen::StartBTDiscoverySession,
-                     weak_ptr_factory_.GetWeakPtr()),
-          base::Bind(&HIDDetectionScreen::SetPoweredError,
-                     weak_ptr_factory_.GetWeakPtr()));
-    } else {
-      UpdateBTDevices();
-    }
-  }
-}
-
-void HIDDetectionScreen::OnGetInputDevicesListForCheck(
-    const base::Callback<void(bool)>& on_check_done,
-    const std::vector<InputDeviceInfo>& devices) {
-  ProcessConnectedDevicesList(devices);
-
-  // Screen is not required if both devices are present.
-  bool all_devices_autodetected = !pointing_device_id_.empty() &&
-                                  !keyboard_device_id_.empty();
-  UMA_HISTOGRAM_BOOLEAN("HIDDetection.OOBEDialogShown",
-                        !all_devices_autodetected);
-
-  on_check_done.Run(!all_devices_autodetected);
-}
-
-void HIDDetectionScreen::OnGetInputDevicesList(
-    const std::vector<InputDeviceInfo>& devices) {
-  ProcessConnectedDevicesList(devices);
-  TryInitiateBTDevicesUpdate();
-}
-
-void HIDDetectionScreen::UpdateDevices() {
-  input_service_proxy_.GetDevices(
-      base::Bind(&HIDDetectionScreen::OnGetInputDevicesList,
-                 weak_ptr_factory_.GetWeakPtr()));
-}
-
-void HIDDetectionScreen::UpdateBTDevices() {
-  if (!adapter_.get() || !adapter_->IsPresent() || !adapter_->IsPowered())
-    return;
-
-  // If no connected devices found as pointing device and keyboard, we try to
-  // connect some type-suitable active bluetooth device.
-  std::vector<device::BluetoothDevice*> bt_devices = adapter_->GetDevices();
-  for (std::vector<device::BluetoothDevice*>::const_iterator it =
-           bt_devices.begin();
-       it != bt_devices.end() &&
-           (keyboard_device_id_.empty() || pointing_device_id_.empty());
-       ++it) {
-    TryPairingAsPointingDevice(*it);
-    TryPairingAsKeyboardDevice(*it);
-  }
-}
-
-void HIDDetectionScreen::OnStartDiscoverySession(
-    scoped_ptr<device::BluetoothDiscoverySession> discovery_session) {
-  VLOG(1) << "BT Discovery session started";
-  discovery_session_ = discovery_session.Pass();
-  UpdateDevices();
-}
-
-void HIDDetectionScreen::SetPoweredError() {
-  LOG(ERROR) << "Failed to power BT adapter";
-}
-
-void HIDDetectionScreen::SetPoweredOffError() {
-  LOG(ERROR) << "Failed to power off BT adapter";
-}
-
-void HIDDetectionScreen::FindDevicesError() {
-  VLOG(1) << "Failed to start Bluetooth discovery.";
-}
-
-
 }  // namespace chromeos