Add support for local services/characteristics/descriptors.

device/bluetooth/bluetooth_remote_gatt_characteristic_bluez.h

 // Copyright 2014 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_CHARACTERISTIC_BLUEZ_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_CHARACTERISTIC_BLUEZ_H_
 
 #include <stddef.h>
 #include <stdint.h>
-
-#include <map>
 #include <queue>
 #include <string>
 #include <utility>
 #include <vector>
 
+#include "base/callback_forward.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "dbus/object_path.h"
 #include "device/bluetooth/bluetooth_gatt_characteristic.h"
+#include "device/bluetooth/bluetooth_gatt_characteristic_bluez.h"
 #include "device/bluetooth/bluetooth_uuid.h"
 #include "device/bluetooth/dbus/bluetooth_gatt_descriptor_client.h"
 
 namespace device {
 
 class BluetoothGattDescriptor;
 class BluetoothGattService;
 
 }  // namespace device
 
 namespace bluez {
 
-class BluetoothRemoteGattDescriptorBlueZ;
+class BluetoothGattDescriptorBlueZ;
 class BluetoothRemoteGattServiceBlueZ;
 
 // The BluetoothRemoteGattCharacteristicBlueZ class implements
 // BluetoothGattCharacteristic for remote GATT characteristics for platforms
 // that use BlueZ.
 class BluetoothRemoteGattCharacteristicBlueZ
-    : public device::BluetoothGattCharacteristic,
-      public bluez::BluetoothGattDescriptorClient::Observer {
+    : public BluetoothGattCharacteristicBlueZ,
+      public BluetoothGattDescriptorClient::Observer {
  public:
   // device::BluetoothGattCharacteristic overrides.
-  std::string GetIdentifier() const override;
   device::BluetoothUUID GetUUID() const override;
   bool IsLocal() const override;
   const std::vector<uint8_t>& GetValue() const override;
-  device::BluetoothGattService* GetService() const override;
   Properties GetProperties() const override;
-  Permissions GetPermissions() const override;
   bool IsNotifying() const override;
-  std::vector<device::BluetoothGattDescriptor*> GetDescriptors() const override;
-  device::BluetoothGattDescriptor* GetDescriptor(
-      const std::string& identifier) const override;
   bool AddDescriptor(device::BluetoothGattDescriptor* descriptor) override;
   bool UpdateValue(const std::vector<uint8_t>& value) override;
+  void StartNotifySession(const NotifySessionCallback& callback,
+                          const ErrorCallback& error_callback) override;
   void ReadRemoteCharacteristic(const ValueCallback& callback,
                                 const ErrorCallback& error_callback) override;
   void WriteRemoteCharacteristic(const std::vector<uint8_t>& new_value,
                                  const base::Closure& callback,
                                  const ErrorCallback& error_callback) override;
-  void StartNotifySession(const NotifySessionCallback& callback,
-                          const ErrorCallback& error_callback) override;
 
   // Removes one value update session and invokes |callback| on completion. This
   // decrements the session reference count by 1 and if the number reaches 0,
   // makes a call to the subsystem to stop notifications from this
   // characteristic.
   void RemoveNotifySession(const base::Closure& callback);
 
-  // Object path of the underlying D-Bus characteristic.
-  const dbus::ObjectPath& object_path() const { return object_path_; }
-
  private:
   friend class BluetoothRemoteGattServiceBlueZ;
 
-  typedef std::pair<NotifySessionCallback, ErrorCallback>
-      PendingStartNotifyCall;
+  using PendingStartNotifyCall =
+      std::pair<NotifySessionCallback, ErrorCallback>;
 
   BluetoothRemoteGattCharacteristicBlueZ(
       BluetoothRemoteGattServiceBlueZ* service,
       const dbus::ObjectPath& object_path);
   ~BluetoothRemoteGattCharacteristicBlueZ() override;
 
   // bluez::BluetoothGattDescriptorClient::Observer overrides.
   void GattDescriptorAdded(const dbus::ObjectPath& object_path) override;
   void GattDescriptorRemoved(const dbus::ObjectPath& object_path) override;
   void GattDescriptorPropertyChanged(const dbus::ObjectPath& object_path,
                                      const std::string& property_name) override;
 
-  // Called by dbus:: on unsuccessful completion of a request to read or write
-  // the characteristic value.
-  void OnError(const ErrorCallback& error_callback,
-               const std::string& error_name,
-               const std::string& error_message);
-
   // Called by dbus:: on successful completion of a request to start
   // notifications.
   void OnStartNotifySuccess(const NotifySessionCallback& callback);
 
   // Called by dbus:: on unsuccessful completion of a request to start
   // notifications.
   void OnStartNotifyError(const ErrorCallback& error_callback,
                           const std::string& error_name,
                           const std::string& error_message);
 
   // Called by dbus:: on successful completion of a request to stop
   // notifications.
   void OnStopNotifySuccess(const base::Closure& callback);
 
   // Called by dbus:: on unsuccessful completion of a request to stop
   // notifications.
   void OnStopNotifyError(const base::Closure& callback,
                          const std::string& error_name,
                          const std::string& error_message);
 
   // Calls StartNotifySession for each queued request.
   void ProcessStartNotifyQueue();
 
-  // Object path of the D-Bus characteristic object.
-  dbus::ObjectPath object_path_;
-
-  // The GATT service this GATT characteristic belongs to.
-  BluetoothRemoteGattServiceBlueZ* service_;
+  // Called by dbus:: on unsuccessful completion of a request to read or write
+  // the characteristic value.
+  void OnError(const ErrorCallback& error_callback,
+               const std::string& error_name,
+               const std::string& error_message);
 
   // The total number of currently active value update sessions.
   size_t num_notify_sessions_;
 
   // Calls to StartNotifySession that are pending. This can happen during the
   // first remote call to start notifications.
   std::queue<PendingStartNotifyCall> pending_start_notify_calls_;
 
   // True, if a Start or Stop notify call to bluetoothd is currently pending.
   bool notify_call_pending_;
 
-  // Mapping from GATT descriptor object paths to descriptor objects owned by
-  // this characteristic. Since the BlueZ implementation uses object paths
-  // as unique identifiers, we also use this mapping to return descriptors by
-  // identifier.
-  typedef std::map<dbus::ObjectPath, BluetoothRemoteGattDescriptorBlueZ*>
-      DescriptorMap;
-  DescriptorMap descriptors_;
-
   // Note: This should remain the last member so it'll be destroyed and
   // invalidate its weak pointers before any other members are destroyed.
   base::WeakPtrFactory<BluetoothRemoteGattCharacteristicBlueZ>
       weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothRemoteGattCharacteristicBlueZ);
 };
 
 }  // namespace bluez
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_CHARACTERISTIC_BLUEZ_H_