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