src/chromeos/dbus/nfc_manager_client.cc

   1 // Copyright 2013 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/nfc_manager_client.h"
   6
   7 #include "base/memory/scoped_ptr.h"
   8 #include "base/memory/weak_ptr.h"
   9 #include "base/observer_list.h"
  10 #include "dbus/bus.h"
  11 #include "third_party/cros_system_api/dbus/service_constants.h"
  12
  13 namespace chromeos {
  14
  15 NfcManagerClient::Properties::Properties(
  16     dbus::ObjectProxy* object_proxy,
  17     const PropertyChangedCallback& callback)
  18     : NfcPropertySet(object_proxy,
  19                      nfc_manager::kNfcManagerInterface,
  20                      callback) {
  21   RegisterProperty(nfc_manager::kAdaptersProperty, &adapters);
  22 }
  23
  24 NfcManagerClient::Properties::~Properties() {
  25 }
  26
  27
  28 // The NfcManagerClient implementation used in production.
  29 class NfcManagerClientImpl : public NfcManagerClient {
  30  public:
  31   NfcManagerClientImpl()
  32       : object_proxy_(NULL),
  33         weak_ptr_factory_(this) {
  34   }
  35
  36   virtual ~NfcManagerClientImpl() {
  37   }
  38
  39   // NfcManagerClient override.
  40   virtual void AddObserver(Observer* observer) override {
  41     DCHECK(observer);
  42     observers_.AddObserver(observer);
  43   }
  44
  45   // NfcManagerClient override.
  46   virtual void RemoveObserver(Observer* observer) override {
  47     DCHECK(observer);
  48     observers_.RemoveObserver(observer);
  49   }
  50
  51   // NfcManagerClient override.
  52   virtual Properties* GetProperties() override {
  53     return properties_.get();
  54   }
  55
  56  protected:
  57   // DBusClient override.
  58   virtual void Init(dbus::Bus* bus) override {
  59     VLOG(1) << "Creating NfcManagerClientImpl";
  60
  61     // Create the object proxy.
  62     object_proxy_ = bus->GetObjectProxy(
  63         nfc_manager::kNfcManagerServiceName,
  64         dbus::ObjectPath(nfc_manager::kNfcManagerServicePath));
  65
  66     // Set up the signal handlers.
  67     object_proxy_->ConnectToSignal(
  68         nfc_manager::kNfcManagerInterface,
  69         nfc_manager::kAdapterAddedSignal,
  70         base::Bind(&NfcManagerClientImpl::AdapterAddedReceived,
  71                    weak_ptr_factory_.GetWeakPtr()),
  72         base::Bind(&NfcManagerClientImpl::AdapterAddedConnected,
  73                    weak_ptr_factory_.GetWeakPtr()));
  74
  75     object_proxy_->ConnectToSignal(
  76         nfc_manager::kNfcManagerInterface,
  77         nfc_manager::kAdapterRemovedSignal,
  78         base::Bind(&NfcManagerClientImpl::AdapterRemovedReceived,
  79                    weak_ptr_factory_.GetWeakPtr()),
  80         base::Bind(&NfcManagerClientImpl::AdapterRemovedConnected,
  81                    weak_ptr_factory_.GetWeakPtr()));
  82
  83     // Create the properties structure.
  84     properties_.reset(new Properties(
  85         object_proxy_,
  86         base::Bind(&NfcManagerClientImpl::OnPropertyChanged,
  87                    weak_ptr_factory_.GetWeakPtr())));
  88
  89     properties_->ConnectSignals();
  90     properties_->GetAll();
  91   }
  92
  93  private:
  94   // NFC manager signal handlers.
  95   void OnPropertyChanged(const std::string& property_name) {
  96     VLOG(1) << "NFC Manager property changed: " << property_name;
  97     FOR_EACH_OBSERVER(Observer, observers_,
  98                       ManagerPropertyChanged(property_name));
  99   }
 100
 101   // Called by dbus:: when an "AdapterAdded" signal is received..
 102   void AdapterAddedReceived(dbus::Signal* signal) {
 103     DCHECK(signal);
 104     dbus::MessageReader reader(signal);
 105     dbus::ObjectPath object_path;
 106     if (!reader.PopObjectPath(&object_path)) {
 107       LOG(WARNING) << "AdapterAdded signal has incorrect parameters: "
 108                    << signal->ToString();
 109       return;
 110     }
 111     VLOG(1) << "Adapter added: " << object_path.value();
 112     FOR_EACH_OBSERVER(Observer, observers_, AdapterAdded(object_path));
 113   }
 114
 115   // Called by dbus:: when the "AdapterAdded" signal is initially connected.
 116   void AdapterAddedConnected(const std::string& interface_name,
 117                              const std::string& signal_name,
 118                              bool success) {
 119     LOG_IF(WARNING, !success) << "Failed to connect to AdapterAdded signal.";
 120   }
 121
 122   // Called by dbus:: when an "AdapterRemoved" signal is received..
 123   void AdapterRemovedReceived(dbus::Signal* signal) {
 124     DCHECK(signal);
 125     dbus::MessageReader reader(signal);
 126     dbus::ObjectPath object_path;
 127     if (!reader.PopObjectPath(&object_path)) {
 128       LOG(WARNING) << "AdapterRemoved signal has incorrect parameters: "
 129                    << signal->ToString();
 130       return;
 131     }
 132     VLOG(1) << "Adapter removed: " << object_path.value();
 133     FOR_EACH_OBSERVER(Observer, observers_, AdapterRemoved(object_path));
 134   }
 135
 136   // Called by dbus:: when the "AdapterAdded" signal is initially connected.
 137   void AdapterRemovedConnected(const std::string& interface_name,
 138                                const std::string& signal_name,
 139                                bool success) {
 140     LOG_IF(WARNING, !success) << "Failed to connect to AdapterRemoved signal.";
 141   }
 142
 143   // D-Bus proxy for neard Manager interface.
 144   dbus::ObjectProxy* object_proxy_;
 145
 146   // Properties for neard Manager interface.
 147   scoped_ptr<Properties> properties_;
 148
 149   // List of observers interested in event notifications.
 150   ObserverList<NfcManagerClient::Observer> observers_;
 151
 152   // Weak pointer factory for generating 'this' pointers that might live longer
 153   // than we do.
 154   // Note: This should remain the last member so it'll be destroyed and
 155   // invalidate its weak pointers before any other members are destroyed.
 156   base::WeakPtrFactory<NfcManagerClientImpl> weak_ptr_factory_;
 157
 158   DISALLOW_COPY_AND_ASSIGN(NfcManagerClientImpl);
 159 };
 160
 161 NfcManagerClient::NfcManagerClient() {
 162 }
 163
 164 NfcManagerClient::~NfcManagerClient() {
 165 }
 166
 167 // static
 168 NfcManagerClient* NfcManagerClient::Create() {
 169   return new NfcManagerClientImpl();
 170 }
 171
 172 }  // namespace chromeos