device/bluetooth/bluetooth_remote_gatt_descriptor_chromeos.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_DESCRIPTOR_CHROMEOS_H_
   6 #define DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_DESCRIPTOR_CHROMEOS_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/memory/weak_ptr.h"
  12 #include "dbus/object_path.h"
  13 #include "device/bluetooth/bluetooth_gatt_descriptor.h"
  14 #include "device/bluetooth/bluetooth_uuid.h"
  15
  16 namespace device {
  17
  18 class BluetoothGattCharacteristic;
  19
  20 }  // namespace device
  21
  22 namespace chromeos {
  23
  24 class BluetoothRemoteGattCharacteristicChromeOS;
  25
  26 // The BluetoothRemoteGattDescriptorChromeOS class implements
  27 // BluetoothGattDescriptor for remote GATT characteristic descriptors on the
  28 // Chrome OS platform.
  29 class BluetoothRemoteGattDescriptorChromeOS
  30     : public device::BluetoothGattDescriptor {
  31  public:
  32   // device::BluetoothGattDescriptor overrides.
  33   virtual std::string GetIdentifier() const OVERRIDE;
  34   virtual device::BluetoothUUID GetUUID() const OVERRIDE;
  35   virtual bool IsLocal() const OVERRIDE;
  36   virtual const std::vector<uint8>& GetValue() const OVERRIDE;
  37   virtual device::BluetoothGattCharacteristic*
  38       GetCharacteristic() const OVERRIDE;
  39   virtual device::BluetoothGattCharacteristic::Permissions
  40       GetPermissions() const OVERRIDE;
  41   virtual void ReadRemoteDescriptor(
  42       const ValueCallback& callback,
  43       const ErrorCallback& error_callback) OVERRIDE;
  44   virtual void WriteRemoteDescriptor(
  45       const std::vector<uint8>& new_value,
  46       const base::Closure& callback,
  47       const ErrorCallback& error_callback) OVERRIDE;
  48
  49   // Object path of the underlying D-Bus characteristic.
  50   const dbus::ObjectPath& object_path() const { return object_path_; }
  51
  52  private:
  53   friend class BluetoothRemoteGattCharacteristicChromeOS;
  54
  55   BluetoothRemoteGattDescriptorChromeOS(
  56       BluetoothRemoteGattCharacteristicChromeOS* characteristic,
  57       const dbus::ObjectPath& object_path);
  58   virtual ~BluetoothRemoteGattDescriptorChromeOS();
  59
  60   // Called by dbus:: on successful completion of a request to read
  61   // the descriptor value.
  62   void OnValueSuccess(const ValueCallback& callback,
  63                       const std::vector<uint8>& value);
  64
  65   // Called by dbus:: on unsuccessful completion of a request to read or write
  66   // the descriptor value.
  67   void OnError(const ErrorCallback& error_callback,
  68                const std::string& error_name,
  69                const std::string& error_message);
  70
  71   // Object path of the D-Bus descriptor object.
  72   dbus::ObjectPath object_path_;
  73
  74   // The GATT characteristic this descriptor belongs to.
  75   BluetoothRemoteGattCharacteristicChromeOS* characteristic_;
  76
  77   // The cached characteristic value based on the most recent read request.
  78   std::vector<uint8> cached_value_;
  79
  80   // Note: This should remain the last member so it'll be destroyed and
  81   // invalidate its weak pointers before any other members are destroyed.
  82   base::WeakPtrFactory<BluetoothRemoteGattDescriptorChromeOS> weak_ptr_factory_;
  83
  84   DISALLOW_COPY_AND_ASSIGN(BluetoothRemoteGattDescriptorChromeOS);
  85 };
  86
  87 }  // namespace chromeos
  88
  89 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_DESCRIPTOR_CHROMEOS_H_