Implement BluetoothRemoteGattCharacteristicWin::GetDescriptors

device/bluetooth/bluetooth_remote_gatt_descriptor_win.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 DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_DESCRIPTOR_WIN_H_
+#define DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_DESCRIPTOR_WIN_H_
+
+#include "base/files/file_path.h"
+#include "base/memory/weak_ptr.h"
+#include "device/bluetooth/bluetooth_gatt_descriptor.h"
+#include "device/bluetooth/bluetooth_low_energy_defs_win.h"
+
+namespace device {
+
+class BluetoothAdapterWin;
+class BluetoothRemoteGattCharacteristicWin;
+class BluetoothTaskManagerWin;
+
+class DEVICE_BLUETOOTH_EXPORT BluetoothRemoteGattDescriptorWin
+    : public BluetoothGattDescriptor {
+ public:
+  BluetoothRemoteGattDescriptorWin(
+      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;
+
+  uint16_t GetAttributeHandle() const;
+
+ private:
+  BluetoothRemoteGattCharacteristicWin* parent_characteristic_;
+  scoped_ptr<BTH_LE_GATT_DESCRIPTOR> descriptor_info_;
+  scoped_refptr<base::SequencedTaskRunner> ui_task_runner_;
+
+  BluetoothAdapterWin* adapter_;

[scheib, 2016/03/01 00:06:22]

Do Characteristics and Descriptors need to access adapter_ often? In current
patches it seems that access is infrequent and that storing it on all objects
isn't needed. Instead GetAdapter() can use the parent_serivice_ &
parent_characteristic_;

[gogerald1, 2016/03/01 17:00:13]

Done.

+  base::FilePath service_path_;
+  scoped_refptr<BluetoothTaskManagerWin> task_manager_;
+  BluetoothGattCharacteristic::Permissions descriptor_permissions_;
+  BluetoothUUID descriptor_uuid_;
+  std::string descriptor_identifier_;
+  std::vector<uint8_t> descriptor_value_;
+
+  base::WeakPtrFactory<BluetoothRemoteGattDescriptorWin> weak_ptr_factory_;
+  DISALLOW_COPY_AND_ASSIGN(BluetoothRemoteGattDescriptorWin);
+};
+
+}  // namespace device.
+#endif  // DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_DESCRIPTOR_WIN_H_