Bluetooth: implement BlueZ 5 backend for Chrome OS

device/bluetooth/bluetooth_adapter_experimental_chromeos.h

 // Copyright (c) 2013 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_ADAPTER_EXPERIMENTAL_CHROMEOS_H_
 #define DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_EXPERIMENTAL_CHROMEOS_H_
 
 #include <string>
 
 #include "base/memory/weak_ptr.h"
+#include "chromeos/dbus/experimental_bluetooth_adapter_client.h"
+#include "chromeos/dbus/experimental_bluetooth_device_client.h"
+#include "dbus/object_path.h"
 #include "device/bluetooth/bluetooth_adapter.h"
 
 namespace device {
 
 class BluetoothAdapterFactory;
 
 }  // namespace device
 
 namespace chromeos {
 
+class BluetoothDeviceExperimentalChromeOS;
+
 // The BluetoothAdapterExperimentalChromeOS class is an alternate implementation
 // of BluetoothAdapter for the Chrome OS platform using the Bluetooth Smart
 // capable backend. It will become the sole implementation for Chrome OS, and
 // be renamed to BluetoothAdapterChromeOS, once the backend is switched,
 class BluetoothAdapterExperimentalChromeOS
-    : public device::BluetoothAdapter {
+    : public device::BluetoothAdapter,
+      private chromeos::ExperimentalBluetoothAdapterClient::Observer,
+      private chromeos::ExperimentalBluetoothDeviceClient::Observer {
  public:
   // BluetoothAdapter override
   virtual void AddObserver(
       device::BluetoothAdapter::Observer* observer) OVERRIDE;
   virtual void RemoveObserver(
       device::BluetoothAdapter::Observer* observer) OVERRIDE;
   virtual std::string GetAddress() const OVERRIDE;
   virtual std::string GetName() const OVERRIDE;
   virtual bool IsInitialized() const OVERRIDE;
   virtual bool IsPresent() const OVERRIDE;
   virtual bool IsPowered() const OVERRIDE;
   virtual void SetPowered(
       bool powered,
       const base::Closure& callback,
       const ErrorCallback& error_callback) OVERRIDE;
   virtual bool IsDiscovering() const OVERRIDE;
   virtual void StartDiscovering(
       const base::Closure& callback,
       const ErrorCallback& error_callback) OVERRIDE;
   virtual void StopDiscovering(
       const base::Closure& callback,
       const ErrorCallback& error_callback) OVERRIDE;
   virtual void ReadLocalOutOfBandPairingData(
       const device::BluetoothAdapter::BluetoothOutOfBandPairingDataCallback&
           callback,
       const ErrorCallback& error_callback) OVERRIDE;
 
  private:
   friend class device::BluetoothAdapterFactory;
+  friend class BluetoothDeviceExperimentalChromeOS;
 
   BluetoothAdapterExperimentalChromeOS();
   virtual ~BluetoothAdapterExperimentalChromeOS();
 
+  // ExperimentalBluetoothAdapterClient::Observer override.
+  virtual void AdapterAdded(const dbus::ObjectPath& object_path) OVERRIDE;
+  virtual void AdapterRemoved(const dbus::ObjectPath& object_path) OVERRIDE;
+  virtual void AdapterPropertyChanged(
+      const dbus::ObjectPath& object_path,
+      const std::string& property_name) OVERRIDE;
+
+  // ExperimentalBluetoothDeviceClient::Observer override.
+  virtual void DeviceAdded(const dbus::ObjectPath& object_path) OVERRIDE;
+  virtual void DeviceRemoved(const dbus::ObjectPath& object_path) OVERRIDE;
+  virtual void DevicePropertyChanged(const dbus::ObjectPath& object_path,
+                                     const std::string& property_name) OVERRIDE;
+
+  // Internal method used to locate the device object by object path
+  // (the devices map and BluetoothDevice methods are by address)
+  BluetoothDeviceExperimentalChromeOS* GetDeviceWithPath(
+      const dbus::ObjectPath& object_path);
+
+  // Set the tracked adapter to the one in |object_path|, this object will
+  // subsequently operate on that adapter until it is removed.
+  void SetAdapter(const dbus::ObjectPath& object_path);
+
+  // Remove the currently tracked adapter. IsPresent() will return false after
+  // this is called.
+  void RemoveAdapter();
+
+  // Announce to observers a change in the adapter state.
+  void PoweredChanged(bool powered);
+  void DiscoveringChanged(bool discovering);
+  void PresentChanged(bool present);
+
+  // Called by dbus:: on completion of the powered property change.
+  void OnSetPowered(const base::Closure& callback,
+                    const ErrorCallback& error_callback,
+                    bool success);
+
+  // Called by dbus:: on completion of the D-Bus method call to start discovery.
+  void OnStartDiscovery(const base::Closure& callback);
+  void OnStartDiscoveryError(const ErrorCallback& error_callback,
+                             const std::string& error_name,
+                             const std::string& error_message);
+
+  // Called by dbus:: on completion of the D-Bus method call to stop discovery.
+  void OnStopDiscovery(const base::Closure& callback);
+  void OnStopDiscoveryError(const ErrorCallback& error_callback,
+                            const std::string& error_name,
+                            const std::string& error_message);
+
+  // Object path of the adapter we track.
+  dbus::ObjectPath object_path_;
+
+  // List of observers interested in event notifications from us.
+  ObserverList<device::BluetoothAdapter::Observer> observers_;
+
   // 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<BluetoothAdapterExperimentalChromeOS> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothAdapterExperimentalChromeOS);
 };
 
 }  // namespace chromeos
 
 #endif  // DEVICE_BLUETOOTH_BLUETOOTH_ADAPTER_EXPERIMENTAL_CHROMEOS_H_