Read characteristic implementation on macOS

device/bluetooth/bluetooth_remote_gatt_service_mac.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_SERVICE_MAC_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_SERVICE_MAC_H_
 
 #include <stdint.h>
 
 #include <vector>
 
 #include "base/containers/scoped_ptr_hash_map.h"
 #include "base/mac/scoped_nsobject.h"
 #include "device/bluetooth/bluetooth_remote_gatt_service.h"
 
 @class CBCharacteristic;
 @class CBPeripheral;
 @class CBService;
 
 namespace device {
 
 class BluetoothAdapterMac;
 class BluetoothDevice;
 class BluetoothRemoteGattCharacteristicMac;
 class BluetoothLowEnergyDeviceMac;
-class BluetoothTestMac;
 
 class DEVICE_BLUETOOTH_EXPORT BluetoothRemoteGattServiceMac
     : public BluetoothRemoteGattService {
  public:
   BluetoothRemoteGattServiceMac(
       BluetoothLowEnergyDeviceMac* bluetooth_device_mac,
       CBService* service,
       bool is_primary);
   ~BluetoothRemoteGattServiceMac() override;
 
   // BluetoothRemoteGattService override.
   std::string GetIdentifier() const override;
   BluetoothUUID GetUUID() const override;
   bool IsPrimary() const override;
   BluetoothDevice* GetDevice() const override;
   std::vector<BluetoothRemoteGattCharacteristic*> GetCharacteristics()
       const override;
   std::vector<BluetoothRemoteGattService*> GetIncludedServices() const override;
   BluetoothRemoteGattCharacteristic* GetCharacteristic(
       const std::string& identifier) const override;
 
  private:
-  friend BluetoothLowEnergyDeviceMac;
-  friend BluetoothTestMac;
+  friend class BluetoothLowEnergyDeviceMac;
+  friend class BluetoothRemoteGattCharacteristicMac;
+  friend class BluetoothTestMac;
 
   // Starts discovering characteristics by calling CoreBluetooth.
   void DiscoverCharacteristics();
   // Called by the BluetoothLowEnergyDeviceMac instance when the characteristics
   // has been discovered.
   void DidDiscoverCharacteristics();
+  // Called by the BluetoothRemoteGattServiceMac instance when the
+  // characteristics value has been read.
+  void DidUpdateValue(CBCharacteristic* characteristic, NSError* error);
   // Returns true if the characteristics has been discovered.
   bool IsDiscoveryComplete();
 
   // Returns the mac adapter.
   BluetoothAdapterMac* GetMacAdapter() const;
   // Returns CBPeripheral.
   CBPeripheral* GetCBPeripheral() const;
   // Returns CBService.
   CBService* GetService() const;
   // Returns a remote characteristic based on the CBCharacteristic.
@@ skipping 15 matching lines @@
   BluetoothUUID uuid_;
   // Is true if the characteristics has been discovered.
   bool is_discovery_complete_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothRemoteGattServiceMac);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_REMOTE_GATT_SERVICE_MAC_H_