Add DBus bindings for BLE Advertisement.

chromeos/dbus/bluetooth_le_advertising_manager_client.cc

+// Copyright 2015 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/bluetooth_le_advertising_manager_client.h"
+
+#include "base/bind.h"
+#include "base/logging.h"
+#include "base/observer_list.h"
+#include "dbus/bus.h"
+#include "dbus/message.h"
+#include "dbus/object_manager.h"
+#include "dbus/object_proxy.h"
+#include "third_party/cros_system_api/dbus/service_constants.h"
+
+namespace chromeos {
+
+const char BluetoothLEAdvertisingManagerClient::kNoResponseError[] =
+    "org.chromium.Error.NoResponse";
+
+// The BluetoothAdvertisementManagerClient implementation used in production.
+class BluetoothAdvertisementManagerClientImpl
+    : public BluetoothLEAdvertisingManagerClient,
+      public dbus::ObjectManager::Interface {
+ public:
+  BluetoothAdvertisementManagerClientImpl()
+      : object_manager_(NULL), weak_ptr_factory_(this) {}
+
+  ~BluetoothAdvertisementManagerClientImpl() override {
+    object_manager_->UnregisterInterface(
+        bluetooth_advertising_manager::kBluetoothAdvertisingManagerInterface);
+  }
+
+  // BluetoothAdapterClient override.
+  void AddObserver(
+      BluetoothLEAdvertisingManagerClient::Observer* observer) override {
+    DCHECK(observer);
+    observers_.AddObserver(observer);
+  }
+
+  // BluetoothAdapterClient override.
+  void RemoveObserver(
+      BluetoothLEAdvertisingManagerClient::Observer* observer) override {
+    DCHECK(observer);
+    observers_.RemoveObserver(observer);
+  }
+
+  // dbus::ObjectManager::Interface override.
+  dbus::PropertySet* CreateProperties(
+      dbus::ObjectProxy* object_proxy,
+      const dbus::ObjectPath& object_path,
+      const std::string& interface_name) override {
+    return new dbus::PropertySet(object_proxy, interface_name,
+                                 dbus::PropertySet::PropertyChangedCallback());
+  }
+
+  // BluetoothAdvertisementManagerClient override.
+  void RegisterAdvertisement(const dbus::ObjectPath& manager_object_path,
+                             const dbus::ObjectPath& advertisement_object_path,
+                             const base::Closure& callback,
+                             const ErrorCallback& error_callback) override {
+    dbus::MethodCall method_call(
+        bluetooth_advertising_manager::kBluetoothAdvertisingManagerInterface,
+        bluetooth_advertising_manager::kRegisterAdvertisement);
+
+    dbus::MessageWriter writer(&method_call);
+    writer.AppendObjectPath(advertisement_object_path);
+
+    // Empty dictionary for options.
+    dbus::MessageWriter dict_entry_writer(NULL);
+    writer.OpenDictEntry(&dict_entry_writer);
+    writer.CloseContainer(&dict_entry_writer);
+
+    writer.AppendObjectPath(advertisement_object_path);
+
+    dbus::ObjectProxy* object_proxy =
+        object_manager_->GetObjectProxy(manager_object_path);
+    object_proxy->CallMethodWithErrorCallback(
+        &method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
+        base::Bind(&BluetoothAdvertisementManagerClientImpl::OnSuccess,
+                   weak_ptr_factory_.GetWeakPtr(), callback),
+        base::Bind(&BluetoothAdvertisementManagerClientImpl::OnError,
+                   weak_ptr_factory_.GetWeakPtr(), error_callback));
+  }
+
+  // BluetoothAdvertisementManagerClient override.
+  void UnregisterAdvertisement(
+      const dbus::ObjectPath& manager_object_path,
+      const dbus::ObjectPath& advertisement_object_path,
+      const base::Closure& callback,
+      const ErrorCallback& error_callback) override {
+    dbus::MethodCall method_call(
+        bluetooth_advertising_manager::kBluetoothAdvertisingManagerInterface,
+        bluetooth_advertising_manager::kUnregisterAdvertisement);
+
+    dbus::MessageWriter writer(&method_call);
+    writer.AppendObjectPath(advertisement_object_path);
+
+    dbus::ObjectProxy* object_proxy =
+        object_manager_->GetObjectProxy(manager_object_path);
+    object_proxy->CallMethodWithErrorCallback(
+        &method_call, dbus::ObjectProxy::TIMEOUT_USE_DEFAULT,
+        base::Bind(&BluetoothAdvertisementManagerClientImpl::OnSuccess,
+                   weak_ptr_factory_.GetWeakPtr(), callback),
+        base::Bind(&BluetoothAdvertisementManagerClientImpl::OnError,
+                   weak_ptr_factory_.GetWeakPtr(), error_callback));
+  }
+
+ protected:
+  void Init(dbus::Bus* bus) override {
+    DCHECK(bus);
+    object_manager_ = bus->GetObjectManager(
+        bluetooth_object_manager::kBluetoothObjectManagerServiceName,
+        dbus::ObjectPath(
+            bluetooth_object_manager::kBluetoothObjectManagerServicePath));
+    object_manager_->RegisterInterface(
+        bluetooth_advertising_manager::kBluetoothAdvertisingManagerInterface,
+        this);
+  }
+
+ private:
+  // Called by dbus::ObjectManager when an object with the advertising manager
+  // interface is created. Informs observers.
+  void ObjectAdded(const dbus::ObjectPath& object_path,
+                   const std::string& interface_name) override {
+    FOR_EACH_OBSERVER(BluetoothLEAdvertisingManagerClient::Observer, observers_,
+                      AdvertisingManagerAdded(object_path));
+  }
+
+  // Called by dbus::ObjectManager when an object with the advertising manager
+  // interface is removed. Informs observers.
+  void ObjectRemoved(const dbus::ObjectPath& object_path,
+                     const std::string& interface_name) override {
+    FOR_EACH_OBSERVER(BluetoothLEAdvertisingManagerClient::Observer, observers_,
+                      AdvertisingManagerRemoved(object_path));
+  }
+
+  // Called when a response for successful method call is received.
+  void OnSuccess(const base::Closure& callback, dbus::Response* response) {
+    DCHECK(response);
+    callback.Run();
+  }
+
+  // Called when a response for a failed method call is received.
+  void OnError(const ErrorCallback& error_callback,
+               dbus::ErrorResponse* response) {
+    // Error response has optional error message argument.
+    std::string error_name;
+    std::string error_message;
+    if (response) {
+      dbus::MessageReader reader(response);
+      error_name = response->GetErrorName();
+      reader.PopString(&error_message);
+    } else {
+      error_name = kNoResponseError;
+      error_message = "";
+    }
+    error_callback.Run(error_name, error_message);
+  }
+
+  dbus::ObjectManager* object_manager_;
+
+  // List of observers interested in event notifications from us.
+  ObserverList<BluetoothLEAdvertisingManagerClient::Observer> observers_;
+
+  // 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<BluetoothAdvertisementManagerClientImpl>
+      weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(BluetoothAdvertisementManagerClientImpl);
+};
+
+BluetoothLEAdvertisingManagerClient::BluetoothLEAdvertisingManagerClient() {
+}
+
+BluetoothLEAdvertisingManagerClient::~BluetoothLEAdvertisingManagerClient() {
+}
+
+BluetoothLEAdvertisingManagerClient*
+BluetoothLEAdvertisingManagerClient::Create() {
+  return new BluetoothAdvertisementManagerClientImpl();
+}
+
+}  // namespace chromeos