Revert of HID-detection screen moved to screenContext.

chrome/browser/ui/webui/chromeos/login/hid_detection_screen_handler.h

Index: chrome/browser/ui/webui/chromeos/login/hid_detection_screen_handler.h
diff --git a/chrome/browser/ui/webui/chromeos/login/hid_detection_screen_handler.h b/chrome/browser/ui/webui/chromeos/login/hid_detection_screen_handler.h
index d9aea379f4a94b33bbbf3f4d03f03b471d941933..5c779abb99ca69fae0b422052f6479d39e878e4d 100644
--- a/chrome/browser/ui/webui/chromeos/login/hid_detection_screen_handler.h
+++ b/chrome/browser/ui/webui/chromeos/login/hid_detection_screen_handler.h
@@ -5,13 +5,21 @@
 #ifndef CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_HID_DETECTION_SCREEN_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_HID_DETECTION_SCREEN_HANDLER_H_
 
+#include <string>
+#include <vector>
+
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/values.h"
-#include "chrome/browser/chromeos/login/screens/hid_detection_view.h"
+#include "chrome/browser/chromeos/device/input_service_proxy.h"
+#include "chrome/browser/chromeos/login/screens/hid_detection_screen_actor.h"
 #include "chrome/browser/ui/webui/chromeos/login/base_screen_handler.h"
 #include "content/public/browser/web_ui.h"
+#include "device/bluetooth/bluetooth_adapter.h"
+#include "device/bluetooth/bluetooth_device.h"
+#include "device/bluetooth/bluetooth_discovery_session.h"
 
 namespace base {
 class DictionaryValue;
@@ -21,44 +29,194 @@
 
 class CoreOobeActor;
 
-// WebUI implementation of HIDDetectionScreenView.
+// WebUI implementation of HIDDetectionScreenActor.
 class HIDDetectionScreenHandler
-    : public HIDDetectionView,
-      public BaseScreenHandler {
+    : public HIDDetectionScreenActor,
+      public BaseScreenHandler,
+      public device::BluetoothAdapter::Observer,
+      public device::BluetoothDevice::PairingDelegate,
+      public InputServiceProxy::Observer {
  public:
+  typedef device::InputServiceLinux::InputDeviceInfo InputDeviceInfo;
 
   explicit HIDDetectionScreenHandler(CoreOobeActor* core_oobe_actor);
   ~HIDDetectionScreenHandler() override;
 
-  // HIDDetectionView implementation:
-  void PrepareToShow() override;
+  // HIDDetectionScreenActor implementation:
   void Show() override;
   void Hide() override;
-  void Bind(HIDDetectionModel& model) override;
-  void Unbind() override;
+  void SetDelegate(Delegate* delegate) override;
   void CheckIsScreenRequired(
       const base::Callback<void(bool)>& on_check_done) override;
 
   // BaseScreenHandler implementation:
   void DeclareLocalizedValues(
       ::login::LocalizedValuesBuilder* builder) override;
-  void DeclareJSCallbacks() override;
   void Initialize() override;
+
+  // WebUIMessageHandler implementation:
+  void RegisterMessages() override;
+
+  // device::BluetoothDevice::PairingDelegate implementation:
+  void RequestPinCode(device::BluetoothDevice* device) override;
+  void RequestPasskey(device::BluetoothDevice* device) override;
+  void DisplayPinCode(device::BluetoothDevice* device,
+                      const std::string& pincode) override;
+  void DisplayPasskey(device::BluetoothDevice* device, uint32 passkey) override;
+  void KeysEntered(device::BluetoothDevice* device, uint32 entered) override;
+  void ConfirmPasskey(device::BluetoothDevice* device, uint32 passkey) override;
+  void AuthorizePairing(device::BluetoothDevice* device) override;
+
+  // device::BluetoothAdapter::Observer implementation.
+  void AdapterPresentChanged(device::BluetoothAdapter* adapter,
+                             bool present) override;
+  void DeviceAdded(device::BluetoothAdapter* adapter,
+                   device::BluetoothDevice* device) override;
+  void DeviceChanged(device::BluetoothAdapter* adapter,
+                     device::BluetoothDevice* device) override;
+  void DeviceRemoved(device::BluetoothAdapter* adapter,
+                     device::BluetoothDevice* device) override;
+
+  // InputServiceProxy::Observer implementation.
+  void OnInputDeviceAdded(const InputDeviceInfo& info) override;
+  void OnInputDeviceRemoved(const std::string& id) override;
 
   // Registers the preference for derelict state.
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
  private:
+  // Types of dialog leaving scenarios for UMA metric.
+  enum ContinueScenarioType {
+    // Only pointing device detected, user pressed 'Continue'.
+    POINTING_DEVICE_ONLY_DETECTED,
+
+    // Only keyboard detected, user pressed 'Continue'.
+    KEYBOARD_DEVICE_ONLY_DETECTED,
+
+    // All devices detected.
+    All_DEVICES_DETECTED,
+
+    // Must be last enum element.
+    CONTINUE_SCENARIO_TYPE_SIZE
+  };
+
+  void InitializeAdapter(scoped_refptr<device::BluetoothAdapter> adapter);
+
+  // Sends a notification to the Web UI of the status of available Bluetooth/USB
+  // pointing device.
+  void SendPointingDeviceNotification();
+
+  // Sends a notification to the Web UI of the status of available Bluetooth/USB
+  // keyboard device.
+  void SendKeyboardDeviceNotification(base::DictionaryValue* params);
+
+  // Updates internal state and UI (if ready) using list of connected devices.
+  void ProcessConnectedDevicesList(const std::vector<InputDeviceInfo>& devices);
+
+  // Checks for lack of mouse or keyboard. If found starts BT devices update.
+  // Initiates BTAdapter if it's not active and BT devices update required.
+  void TryInitiateBTDevicesUpdate();
+
+  // Processes list of input devices returned by InputServiceProxy on the check
+  // request. Calls the callback that expects true if screen is required.
+  void OnGetInputDevicesListForCheck(
+      const base::Callback<void(bool)>& on_check_done,
+      const std::vector<InputDeviceInfo>& devices);
+
+  // Processes list of input devices returned by InputServiceProxy on regular
+  // request.
+  void OnGetInputDevicesList(const std::vector<InputDeviceInfo>& devices);
+
+  void StartBTDiscoverySession();
+
+  // Called by device::BluetoothDevice on a successful pairing and connection
+  // to a device.
+  void BTConnected(device::BluetoothDevice::DeviceType device_type);
+
+  // Called by device::BluetoothDevice in response to a failure to
+  // connect to the device with bluetooth address |address| due to an error
+  // encoded in |error_code|.
+  void BTConnectError(const std::string& address,
+                      device::BluetoothDevice::DeviceType device_type,
+                      device::BluetoothDevice::ConnectErrorCode error_code);
+
   // JS messages handlers.
   void HandleOnContinue();
 
-  HIDDetectionModel* model_;
+  Delegate* delegate_;
 
   CoreOobeActor* core_oobe_actor_;
 
   // Keeps whether screen should be shown right after initialization.
   bool show_on_init_;
 
+  // Displays in the UI a connecting to the device |device| message.
+  void DeviceConnecting(device::BluetoothDevice* device);
+
+  // Called by device::BluetoothAdapter in response to a successful request
+  // to initiate a discovery session.
+  void OnStartDiscoverySession(
+      scoped_ptr<device::BluetoothDiscoverySession> discovery_session);
+
+  // Called by device::BluetoothAdapter in response to a failure to
+  // initiate a discovery session.
+  void FindDevicesError();
+
+  // Called by device::BluetoothAdapter in response to a failure to
+  // power BT adapter.
+  void SetPoweredError();
+
+  // Called by device::BluetoothAdapter in response to a failure to
+  // power off BT adapter.
+  void SetPoweredOffError();
+
+  // Called for revision of active devices. If current-placement is available
+  // for mouse or keyboard device, sets one of active devices as current or
+  // tries to connect some BT device if no appropriate devices are connected.
+  void UpdateDevices();
+
+  // Tries to connect some BT devices if no type-appropriate devices are
+  // connected.
+  void UpdateBTDevices();
+
+  // Tries to connect given BT device.
+  void ConnectBTDevice(device::BluetoothDevice* device);
+
+  // Tries to connect given BT device as pointing one.
+  void TryPairingAsPointingDevice(device::BluetoothDevice* device);
+
+  // Tries to connect given BT device as keyboard.
+  void TryPairingAsKeyboardDevice(device::BluetoothDevice* device);
+
+  // Default bluetooth adapter, used for all operations.
+  scoped_refptr<device::BluetoothAdapter> adapter_;
+
+  InputServiceProxy input_service_proxy_;
+
+  // The current device discovery session. Only one active discovery session is
+  // kept at a time and the instance that |discovery_session_| points to gets
+  // replaced by a new one when a new discovery session is initiated.
+  scoped_ptr<device::BluetoothDiscoverySession> discovery_session_;
+
+  // Current pointing device, if any.
+  std::string pointing_device_name_;
+  std::string pointing_device_id_;
+  bool mouse_is_pairing_;
+  InputDeviceInfo::Type pointing_device_connect_type_;
+
+  // Current keyboard device, if any.
+  std::string keyboard_device_name_;
+  std::string keyboard_device_id_;
+  bool keyboard_is_pairing_;
+  InputDeviceInfo::Type keyboard_device_connect_type_;
+
+  bool switch_on_adapter_when_ready_;
+
+  // State of BT adapter before screen-initiated changes.
+  scoped_ptr<bool> adapter_initially_powered_;
+
+  base::WeakPtrFactory<HIDDetectionScreenHandler> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(HIDDetectionScreenHandler);
 };