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#include "chromeos/dbus/bluetooth_gatt_service_client.h"
6
7#include "base/bind.h"
8#include "base/memory/weak_ptr.h"
9#include "base/observer_list.h"
10#include "dbus/bus.h"
11#include "dbus/object_manager.h"
12#include "third_party/cros_system_api/dbus/service_constants.h"
13
14namespace chromeos {
15
16BluetoothGattServiceClient::Properties::Properties(
17    dbus::ObjectProxy* object_proxy,
18    const std::string& interface_name,
19    const PropertyChangedCallback&callback)
20    : dbus::PropertySet(object_proxy, interface_name, callback) {
21  RegisterProperty(bluetooth_gatt_service::kUUIDProperty, &uuid);
22  RegisterProperty(bluetooth_gatt_service::kIncludesProperty, &includes);
23  RegisterProperty(bluetooth_gatt_service::kDeviceProperty, &device);
24  RegisterProperty(bluetooth_gatt_service::kPrimaryProperty, &primary);
25  RegisterProperty(bluetooth_gatt_service::kCharacteristicsProperty,
26                   &characteristics);
27}
28
29BluetoothGattServiceClient::Properties::~Properties() {
30}
31
32// The BluetoothGattServiceClient implementation used in production.
33class BluetoothGattServiceClientImpl : public BluetoothGattServiceClient,
34                                       public dbus::ObjectManager::Interface {
35 public:
36  BluetoothGattServiceClientImpl()
37      : object_manager_(NULL),
38        weak_ptr_factory_(this) {
39  }
40
41  virtual ~BluetoothGattServiceClientImpl() {
42    object_manager_->UnregisterInterface(
43        bluetooth_gatt_service::kBluetoothGattServiceInterface);
44  }
45
46  // BluetoothGattServiceClientImpl override.
47  virtual void AddObserver(
48      BluetoothGattServiceClient::Observer* observer) OVERRIDE {
49    DCHECK(observer);
50    observers_.AddObserver(observer);
51  }
52
53  // BluetoothGattServiceClientImpl override.
54  virtual void RemoveObserver(
55      BluetoothGattServiceClient::Observer* observer) OVERRIDE {
56    DCHECK(observer);
57    observers_.RemoveObserver(observer);
58  }
59
60  // BluetoothGattServiceClientImpl override.
61  virtual std::vector<dbus::ObjectPath> GetServices() OVERRIDE {
62    DCHECK(object_manager_);
63    return object_manager_->GetObjectsWithInterface(
64        bluetooth_gatt_service::kBluetoothGattServiceInterface);
65  }
66
67  // BluetoothGattServiceClientImpl override.
68  virtual Properties* GetProperties(
69      const dbus::ObjectPath& object_path) OVERRIDE {
70    DCHECK(object_manager_);
71    return static_cast<Properties*>(
72        object_manager_->GetProperties(
73            object_path,
74            bluetooth_gatt_service::kBluetoothGattServiceInterface));
75  }
76
77  // dbus::ObjectManager::Interface override.
78  virtual dbus::PropertySet* CreateProperties(
79      dbus::ObjectProxy *object_proxy,
80      const dbus::ObjectPath& object_path,
81      const std::string& interface_name) OVERRIDE {
82    Properties* properties = new Properties(
83        object_proxy,
84        interface_name,
85        base::Bind(&BluetoothGattServiceClientImpl::OnPropertyChanged,
86                   weak_ptr_factory_.GetWeakPtr(),
87                   object_path));
88    return static_cast<dbus::PropertySet*>(properties);
89  }
90
91  // dbus::ObjectManager::Interface override.
92  virtual void ObjectAdded(const dbus::ObjectPath& object_path,
93                           const std::string& interface_name) OVERRIDE {
94    VLOG(2) << "Remote GATT service added: " << object_path.value();
95    FOR_EACH_OBSERVER(BluetoothGattServiceClient::Observer, observers_,
96                      GattServiceAdded(object_path));
97  }
98
99  // dbus::ObjectManager::Interface override.
100  virtual void ObjectRemoved(const dbus::ObjectPath& object_path,
101                             const std::string& interface_name) OVERRIDE {
102    VLOG(2) << "Remote GATT service removed: " << object_path.value();
103    FOR_EACH_OBSERVER(BluetoothGattServiceClient::Observer, observers_,
104                      GattServiceRemoved(object_path));
105  }
106
107 protected:
108  // chromeos::DBusClient override.
109  virtual void Init(dbus::Bus* bus) OVERRIDE {
110    object_manager_ = bus->GetObjectManager(
111        bluetooth_object_manager::kBluetoothObjectManagerServiceName,
112        dbus::ObjectPath(
113            bluetooth_object_manager::kBluetoothObjectManagerServicePath));
114    object_manager_->RegisterInterface(
115        bluetooth_gatt_service::kBluetoothGattServiceInterface, this);
116  }
117
118 private:
119  // Called by dbus::PropertySet when a property value is changed, either by
120  // result of a signal or response to a GetAll() or Get() call. Informs
121  // observers.
122  virtual void OnPropertyChanged(const dbus::ObjectPath& object_path,
123                                 const std::string& property_name) {
124    VLOG(2) << "Remote GATT service property changed: " << object_path.value()
125            << ": " << property_name;
126    FOR_EACH_OBSERVER(BluetoothGattServiceClient::Observer, observers_,
127                      GattServicePropertyChanged(object_path, property_name));
128  }
129
130  dbus::ObjectManager* object_manager_;
131
132  // List of observers interested in event notifications from us.
133  ObserverList<BluetoothGattServiceClient::Observer> observers_;
134
135  // Weak pointer factory for generating 'this' pointers that might live longer
136  // than we do.
137  // Note: This should remain the last member so it'll be destroyed and
138  // invalidate its weak pointers before any other members are destroyed.
139  base::WeakPtrFactory<BluetoothGattServiceClientImpl> weak_ptr_factory_;
140
141  DISALLOW_COPY_AND_ASSIGN(BluetoothGattServiceClientImpl);
142};
143
144BluetoothGattServiceClient::BluetoothGattServiceClient() {
145}
146
147BluetoothGattServiceClient::~BluetoothGattServiceClient() {
148}
149
150// static
151BluetoothGattServiceClient* BluetoothGattServiceClient::Create() {
152  return new BluetoothGattServiceClientImpl();
153}
154
155}  // namespace chromeos
156