BLE GATT service implementation in Chrome for Windows 8 and later

device/bluetooth/bluetooth_remote_gatt_descriptor_win.h

+// Copyright 2015 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 DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_DESCRIPTOR_WIN_H_
+#define DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_DESCRIPTOR_WIN_H_
+
+#include "base/macros.h"
+#include "device/bluetooth/bluetooth_adapter_win.h"
+#include "device/bluetooth/bluetooth_device_win.h"
+#include "device/bluetooth/bluetooth_gatt_descriptor.h"
+#include "device/bluetooth/bluetooth_remote_gatt_characteristic_win.h"
+#include "device/bluetooth/bluetooth_task_manager_win.h"
+
+namespace device {
+
+// The BluetoothRemoteGattDescriptorWin class implements BluetoothGattDescriptor
+// for remote GATT services on Windows 8 and later.
+class DEVICE_BLUETOOTH_EXPORT BluetoothRemoteGattDescriptorWin
+    : public BluetoothGattDescriptor {
+ public:
+  BluetoothRemoteGattDescriptorWin(
+      BluetoothAdapterWin* adapter,
+      base::FilePath service_path,
+      BluetoothRemoteGattCharacteristicWin* parent_characteristic,
+      BTH_LE_GATT_DESCRIPTOR* descriptor_info,
+      scoped_refptr<base::SequencedTaskRunner>& ui_task_runner);
+  ~BluetoothRemoteGattDescriptorWin();
+
+  // Override BluetoothGattDescriptor interfaces.
+  std::string GetIdentifier() const override;
+  BluetoothUUID GetUUID() const override;
+  bool IsLocal() const override;
+  std::vector<uint8_t>& GetValue() const override;
+  BluetoothGattCharacteristic* GetCharacteristic() const override;
+  BluetoothGattCharacteristic::Permissions GetPermissions() const override;
+  void ReadRemoteDescriptor(const ValueCallback& callback,
+                            const ErrorCallback& error_callback) override;
+  void WriteRemoteDescriptor(const std::vector<uint8_t>& new_value,
+                             const base::Closure& callback,
+                             const ErrorCallback& error_callback) override;
+
+  void Update();
+
+ private:
+  void ReadRemoteDescriptorValueCallback(BTH_LE_GATT_DESCRIPTOR_VALUE* value,
+                                         HRESULT hr);
+  void WriteRemoteDescriptorValueCallback(HRESULT hr);
+  BluetoothGattService::GattErrorCode SystemErrorToGattErrorCode(HRESULT hr);
+
+  BluetoothAdapterWin* adapter_;
+  base::FilePath service_path_;
+  scoped_refptr<BluetoothTaskManagerWin> task_manager_;
+
+  BluetoothRemoteGattCharacteristicWin* parent_characteristic_;
+  scoped_ptr<BTH_LE_GATT_DESCRIPTOR> descriptor_info_;
+  BluetoothGattCharacteristic::Permissions permissions_;
+
+  BluetoothUUID descriptor_uuid_;
+  bool descriptor_initialized_;
+  std::vector<uint8_t> descriptor_value_;
+
+  std::vector<std::pair<ValueCallback, ErrorCallback>>
+      read_remote_descriptor_value_callbacks_;
+  std::vector<std::pair<base::Closure, ErrorCallback>>
+      write_remote_descriptor_value_callbacks_;
+
+  scoped_refptr<base::SequencedTaskRunner> ui_task_runner_;
+
+  base::WeakPtrFactory<BluetoothRemoteGattDescriptorWin> weak_ptr_factory_;
+  DISALLOW_COPY_AND_ASSIGN(BluetoothRemoteGattDescriptorWin);
+};
+
+}  // namespace device.
+#endif  // DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_DESCRIPTOR_WIN_H_