POC for adapter service

chrome/browser/ui/webui/bluetooth_internals/services/bluetooth_adapter_service.h

+// Copyright 2016 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.
+
+#ifndef CHROME_BROWSER_UI_WEBUI_BLUETOOTH_INTERNALS_SERVICES_BLUETOOTH_ADAPTER_SERVICE_H_
+#define CHROME_BROWSER_UI_WEBUI_BLUETOOTH_INTERNALS_SERVICES_BLUETOOTH_ADAPTER_SERVICE_H_
+
+#include <set>
+#include <string>
+
+#include "base/macros.h"
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/ui/webui/bluetooth_internals/bluetooth_internals.mojom.h"
+#include "chrome/browser/ui/webui/mojo_web_ui_handler.h"
+#include "device/bluetooth/bluetooth_adapter.h"
+#include "device/bluetooth/bluetooth_adapter_factory.h"
+#include "mojo/public/cpp/bindings/binding.h"
+
+// Implementation of Mojo BluetoothAdapter located in
+// device/bluetooth/public/interfaces/bluetooth.mojom.
+// It handles requests for Bluetooth adapter capabilities
+// and devices coming from the chrome://bluetooth-internals
+// page and uses the platform abstraction of device/bluetooth.
+// This class is instantiated on-demand via the GetAdapterService
+// function in BluetoothInternalsUI which creates a strong Mojo
+// binding that manages the lifetime of an instance of this class.
+class BluetoothAdapterService : public bluetooth::mojom::Adapter,
+                                public device::BluetoothAdapter::Observer {
+ public:
+  explicit BluetoothAdapterService();
+  ~BluetoothAdapterService() override;
+
+  static void Create(bluetooth::mojom::AdapterRequest request);
+
+  void SetClient(bluetooth::mojom::AdapterClientPtr client_) override;
+
+  // bluetooth::mojom::AdapterService overrides:
+  void GetDevices(const GetDevicesCallback& callback) override;
+
+  // device::BluetoothAdapter::Observer overrides:
+  void DeviceAdded(device::BluetoothAdapter* adapter,
+                   device::BluetoothDevice* device) override;
+
+  void DeviceRemoved(device::BluetoothAdapter* adapter,
+                     device::BluetoothDevice* device) override;
+
+ private:
+  bluetooth::mojom::DeviceInfoPtr ConstructDeviceInfoStruct(
+      device::BluetoothDevice* device);
+  scoped_refptr<device::BluetoothAdapter> GetAdapter();
+  void GetDevicesImpl(const GetDevicesCallback& callback,
+                      scoped_refptr<device::BluetoothAdapter> adapter);
+  void OnGetAdapter(scoped_refptr<device::BluetoothAdapter> adapter);
+
+  scoped_refptr<device::BluetoothAdapter> adapter_;
+  std::set<std::string> addresses_;
+  bluetooth::mojom::AdapterClientPtr client_;
+  base::WeakPtrFactory<BluetoothAdapterService> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(BluetoothAdapterService);
+};
+
+#endif  // CHROME_BROWSER_UI_WEBUI_BLUETOOTH_INTERNALS_SERVICES_BLUETOOTH_ADAPTER_SERVICE_H_