chromeos: Remove unused NFC D-Bus client library

chromeos/dbus/nfc_tag_client.cc

Index: chromeos/dbus/nfc_tag_client.cc
diff --git a/chromeos/dbus/nfc_tag_client.cc b/chromeos/dbus/nfc_tag_client.cc
deleted file mode 100644
index f77b063aa1d9fe0e1e57801ece32b16e250b4c37..0000000000000000000000000000000000000000
--- a/chromeos/dbus/nfc_tag_client.cc
+++ /dev/null
@@ -1,257 +0,0 @@
-// Copyright 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.
-
-#include "chromeos/dbus/nfc_tag_client.h"
-
-#include "base/bind.h"
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "base/observer_list.h"
-#include "base/strings/stringprintf.h"
-#include "chromeos/dbus/nfc_adapter_client.h"
-#include "dbus/bus.h"
-#include "dbus/message.h"
-#include "dbus/values_util.h"
-#include "third_party/cros_system_api/dbus/service_constants.h"
-
-using chromeos::nfc_client_helpers::DBusObjectMap;
-using chromeos::nfc_client_helpers::ObjectProxyTree;
-
-namespace chromeos {
-
-NfcTagClient::Properties::Properties(
-    dbus::ObjectProxy* object_proxy,
-    const PropertyChangedCallback& callback)
-    : NfcPropertySet(object_proxy,
-                     nfc_tag::kNfcTagInterface,
-                     callback) {
-  RegisterProperty(nfc_tag::kTypeProperty, &type);
-  RegisterProperty(nfc_tag::kProtocolProperty, &protocol);
-  RegisterProperty(nfc_tag::kRecordsProperty, &records);
-  RegisterProperty(nfc_tag::kReadOnlyProperty, &read_only);
-}
-
-NfcTagClient::Properties::~Properties() {
-}
-
-// The NfcTagClient implementation used in production.
-class NfcTagClientImpl : public NfcTagClient,
-                         public NfcAdapterClient::Observer,
-                         public DBusObjectMap::Delegate {
- public:
-  explicit NfcTagClientImpl(NfcAdapterClient* adapter_client)
-      : bus_(NULL),
-        adapter_client_(adapter_client),
-        weak_ptr_factory_(this) {
-    DCHECK(adapter_client);
-  }
-
-  ~NfcTagClientImpl() override {
-    DCHECK(adapter_client_);
-    adapter_client_->RemoveObserver(this);
-  }
-
-  // NfcTagClient override.
-  void AddObserver(NfcTagClient::Observer* observer) override {
-    DCHECK(observer);
-    observers_.AddObserver(observer);
-  }
-
-  // NfcTagClient override.
-  void RemoveObserver(NfcTagClient::Observer* observer) override {
-    DCHECK(observer);
-    observers_.RemoveObserver(observer);
-  }
-
-  // NfcTagClient override.
-  std::vector<dbus::ObjectPath> GetTagsForAdapter(
-      const dbus::ObjectPath& adapter_path) override {
-    DBusObjectMap* object_map =
-        adapters_to_object_maps_.GetObjectMap(adapter_path);
-    if (!object_map)
-      return std::vector<dbus::ObjectPath>();
-    return object_map->GetObjectPaths();
-  }
-
-  // NfcTagClient override.
-  Properties* GetProperties(const dbus::ObjectPath& object_path) override {
-    return static_cast<Properties*>(
-        adapters_to_object_maps_.FindObjectProperties(object_path));
-  }
-
-  // NfcTagClient override.
-  void Write(const dbus::ObjectPath& object_path,
-             const base::DictionaryValue& attributes,
-             const base::Closure& callback,
-             const nfc_client_helpers::ErrorCallback& error_callback) override {
-    dbus::ObjectProxy* object_proxy =
-        adapters_to_object_maps_.FindObjectProxy(object_path);
-    if (!object_proxy) {
-      std::string error_message =
-          base::StringPrintf("NFC tag with object path \"%s\" does not exist.",
-                             object_path.value().c_str());
-      LOG(ERROR) << error_message;
-      error_callback.Run(nfc_client_helpers::kUnknownObjectError,
-                         error_message);
-      return;
-    }
-
-    // |attributes| should not be empty.
-    if (attributes.empty()) {
-      std::string error_message =
-          "Cannot write data to tag with empty arguments.";
-      LOG(ERROR) << error_message;
-      error_callback.Run(nfc_error::kInvalidArguments, error_message);
-      return;
-    }
-
-    // Create the arguments.
-    dbus::MethodCall method_call(nfc_tag::kNfcTagInterface, nfc_tag::kWrite);
-    dbus::MessageWriter writer(&method_call);
-    dbus::AppendValueData(&writer, attributes);
-
-    object_proxy->CallMethodWithErrorCallback(
-        &method_call,
-        dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
-        base::Bind(&nfc_client_helpers::OnSuccess, callback),
-        base::Bind(&nfc_client_helpers::OnError, error_callback));
-  }
-
- protected:
-  // DBusClient override.
-  void Init(dbus::Bus* bus) override {
-    VLOG(1) << "Creating NfcTagClientImpl";
-    DCHECK(bus);
-    bus_ = bus;
-    DCHECK(adapter_client_);
-    adapter_client_->AddObserver(this);
-  }
-
- private:
-  // NfcAdapterClient::Observer override.
-  void AdapterAdded(const dbus::ObjectPath& object_path) override {
-    VLOG(1) << "Adapter added. Creating map for tag proxies belonging to "
-            << "adapter: " << object_path.value();
-    adapters_to_object_maps_.CreateObjectMap(
-        object_path, nfc_tag::kNfcTagServiceName, this, bus_);
-  }
-
-  // NfcAdapterClient::Observer override.
-  void AdapterRemoved(const dbus::ObjectPath& object_path) override {
-    // Neard doesn't send out property changed signals for the tags that
-    // are removed when the adapter they belong to is removed. Clean up the
-    // object proxies for devices that are managed by the removed adapter.
-    // Note: DBusObjectMap guarantees that the Properties structure for the
-    // removed adapter will be valid before this method returns.
-    VLOG(1) << "Adapter removed. Cleaning up tag proxies belonging to "
-            << "adapter: " << object_path.value();
-    adapters_to_object_maps_.RemoveObjectMap(object_path);
-  }
-
-  // NfcAdapterClient::Observer override.
-  void AdapterPropertyChanged(const dbus::ObjectPath& object_path,
-                              const std::string& property_name) override {
-    // Update the tag proxies.
-    DCHECK(adapter_client_);
-    NfcAdapterClient::Properties *adapter_properties =
-        adapter_client_->GetProperties(object_path);
-    DCHECK(adapter_properties);
-    if (!adapter_properties) {
-      LOG(ERROR) << "No property structure found for adapter: "
-                 << object_path.value();
-      return;
-    }
-
-    // Ignore changes to properties other than "Tags".
-    if (property_name != adapter_properties->tags.name())
-      return;
-
-    // Update the known tags.
-    VLOG(1) << "NFC tags changed.";
-    const std::vector<dbus::ObjectPath>& received_tags =
-        adapter_properties->tags.value();
-    DBusObjectMap* object_map =
-        adapters_to_object_maps_.GetObjectMap(object_path);
-    DCHECK(object_map);
-    object_map->UpdateObjects(received_tags);
-  }
-
-  // nfc_client_helpers::DBusObjectMap::Delegate override.
-  NfcPropertySet* CreateProperties(dbus::ObjectProxy* object_proxy) override {
-    Properties* properties = new Properties(
-        object_proxy,
-        base::Bind(&NfcTagClientImpl::OnPropertyChanged,
-                   weak_ptr_factory_.GetWeakPtr(),
-                   object_proxy->object_path()));
-    properties->SetAllPropertiesReceivedCallback(
-        base::Bind(&NfcTagClientImpl::OnPropertiesReceived,
-                   weak_ptr_factory_.GetWeakPtr(),
-                   object_proxy->object_path()));
-    return properties;
-  }
-
-  // nfc_client_helpers::DBusObjectMap::Delegate override.
-  void ObjectAdded(const dbus::ObjectPath& object_path) override {
-    FOR_EACH_OBSERVER(NfcTagClient::Observer, observers_,
-                      TagAdded(object_path));
-  }
-
-  void ObjectRemoved(const dbus::ObjectPath& object_path) override {
-    FOR_EACH_OBSERVER(NfcTagClient::Observer, observers_,
-                      TagRemoved(object_path));
-  }
-
-  // Called by NfcPropertySet when a property value is changed, either by
-  // result of a signal or response to a GetAll() or Get() call.
-  void OnPropertyChanged(const dbus::ObjectPath& object_path,
-                         const std::string& property_name) {
-    VLOG(1) << "Tag property changed; Path: " << object_path.value()
-            << " Property: " << property_name;
-    FOR_EACH_OBSERVER(NfcTagClient::Observer, observers_,
-                      TagPropertyChanged(object_path, property_name));
-  }
-
-  // Called by NfcPropertySet when all properties have been processed as a
-  // result of a call to GetAll.
-  void OnPropertiesReceived(const dbus::ObjectPath& object_path) {
-    VLOG(1) << "All tag properties received; Path: " << object_path.value();
-    FOR_EACH_OBSERVER(NfcTagClient::Observer, observers_,
-                      TagPropertiesReceived(object_path));
-  }
-
-  // We maintain a pointer to the bus to be able to request proxies for
-  // new NFC tags that appear.
-  dbus::Bus* bus_;
-
-  // List of observers interested in event notifications.
-  base::ObserverList<NfcTagClient::Observer> observers_;
-
-  // Mapping from object paths to object proxies and properties structures that
-  // were already created by us. This stucture stores a different DBusObjectMap
-  // for each known NFC adapter object path.
-  ObjectProxyTree adapters_to_object_maps_;
-
-  // The adapter client that we listen to events notifications from.
-  NfcAdapterClient* adapter_client_;
-
-  // Weak pointer factory for generating 'this' pointers that might live longer
-  // than we do.
-  // 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<NfcTagClientImpl> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(NfcTagClientImpl);
-};
-
-NfcTagClient::NfcTagClient() {
-}
-
-NfcTagClient::~NfcTagClient() {
-}
-
-NfcTagClient* NfcTagClient::Create(NfcAdapterClient* adapter_client) {
-  return new NfcTagClientImpl(adapter_client);
-}
-
-}  // namespace chromeos