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      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 CHROMEOS_DBUS_FAKE_BLUETOOTH_GATT_SERVICE_CLIENT_H_
      6 #define CHROMEOS_DBUS_FAKE_BLUETOOTH_GATT_SERVICE_CLIENT_H_
      7 
      8 #include <string>
      9 #include <vector>
     10 
     11 #include "base/memory/scoped_ptr.h"
     12 #include "base/memory/weak_ptr.h"
     13 #include "base/observer_list.h"
     14 #include "chromeos/chromeos_export.h"
     15 #include "chromeos/dbus/bluetooth_gatt_service_client.h"
     16 #include "dbus/object_path.h"
     17 #include "dbus/property.h"
     18 
     19 namespace chromeos {
     20 
     21 // FakeBluetoothGattServiceClient simulates the behavior of the Bluetooth Daemon
     22 // GATT service objects and is used in test cases in place of a mock and on the
     23 // Linux desktop.
     24 class CHROMEOS_EXPORT FakeBluetoothGattServiceClient
     25     : public BluetoothGattServiceClient {
     26  public:
     27   struct Properties : public BluetoothGattServiceClient::Properties {
     28     explicit Properties(const PropertyChangedCallback& callback);
     29     virtual ~Properties();
     30 
     31     // dbus::PropertySet override
     32     virtual void Get(dbus::PropertyBase* property,
     33                      dbus::PropertySet::GetCallback callback) OVERRIDE;
     34     virtual void GetAll() OVERRIDE;
     35     virtual void Set(dbus::PropertyBase* property,
     36                      dbus::PropertySet::SetCallback callback) OVERRIDE;
     37   };
     38 
     39   FakeBluetoothGattServiceClient();
     40   virtual ~FakeBluetoothGattServiceClient();
     41 
     42   // DBusClient override.
     43   virtual void Init(dbus::Bus* bus) OVERRIDE;
     44 
     45   // BluetoothGattServiceClient overrides.
     46   virtual void AddObserver(Observer* observer) OVERRIDE;
     47   virtual void RemoveObserver(Observer* observer) OVERRIDE;
     48   virtual std::vector<dbus::ObjectPath> GetServices() OVERRIDE;
     49   virtual Properties* GetProperties(const dbus::ObjectPath& object_path)
     50       OVERRIDE;
     51 
     52   // Makes a service visible for device with object path |device_path|. Note
     53   // that only one instance of a specific service is simulated at a time. Hence,
     54   // this method will fail, if the service is already visible.
     55   void ExposeHeartRateService(const dbus::ObjectPath& device_path);
     56   void HideHeartRateService();
     57 
     58   // Returns whether or not the Heart Rate Service is visible.
     59   bool IsHeartRateVisible() const;
     60 
     61   // Returns the current object path of the visible Heart Rate service. If the
     62   // service is not visible, returns an invalid empty path.
     63   dbus::ObjectPath GetHeartRateServicePath() const;
     64 
     65   // Final object path components and the corresponding UUIDs of the GATT
     66   // services that we emulate. Service paths are hierarchical to Bluetooth
     67   // device paths, so if the path component is "service0000", and the device
     68   // path is "/org/foo/device0", the service path is
     69   // "/org/foo/device0/service0000".
     70   static const char kHeartRateServicePathComponent[];
     71   static const char kHeartRateServiceUUID[];
     72 
     73  private:
     74   // Property callback passed when we create Properties structures.
     75   void OnPropertyChanged(const dbus::ObjectPath& object_path,
     76                          const std::string& property_name);
     77 
     78   // Notifies observers.
     79   void NotifyServiceAdded(const dbus::ObjectPath& object_path);
     80   void NotifyServiceRemoved(const dbus::ObjectPath& object_path);
     81 
     82   // Tells FakeBluetoothGattCharacteristicClient to expose GATT characteristics.
     83   // This is scheduled from ExposeHeartRateService to simulate asynchronous
     84   // retrieval of characteristics. If the Heart Rate Service is hidden at the
     85   // time this method is called, then it does nothing.
     86   void ExposeHeartRateCharacteristics();
     87 
     88   // Static properties we return. As long as a service is exposed, this will be
     89   // non-null. Otherwise it will be null.
     90   scoped_ptr<Properties> heart_rate_service_properties_;
     91   std::string heart_rate_service_path_;
     92 
     93   // List of observers interested in event notifications from us.
     94   ObserverList<Observer> observers_;
     95 
     96   // Weak pointer factory for generating 'this' pointers that might live longer
     97   // than we do.
     98   // Note: This should remain the last member so it'll be destroyed and
     99   // invalidate its weak pointers before any other members are destroyed.
    100   base::WeakPtrFactory<FakeBluetoothGattServiceClient> weak_ptr_factory_;
    101 
    102   DISALLOW_COPY_AND_ASSIGN(FakeBluetoothGattServiceClient);
    103 };
    104 
    105 }  // namespace chromeos
    106 
    107 #endif  // CHROMEOS_DBUS_FAKE_BLUETOOTH_GATT_SERVICE_CLIENT_H_
    108