Bluetooth: D-Bus client interface for org.bluez.Input1

chromeos/dbus/experimental_bluetooth_input_client.cc

+// Copyright (c) 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/experimental_bluetooth_input_client.h"
+
+#include <map>
+
+#include "base/logging.h"
+#include "base/stl_util.h"
+#include "chromeos/dbus/bluetooth_property.h"
+#include "chromeos/dbus/fake_bluetooth_input_client.h"
+#include "dbus/bus.h"
+#include "dbus/message.h"
+#include "dbus/object_manager.h"
+#include "dbus/object_path.h"
+#include "dbus/object_proxy.h"
+#include "third_party/cros_system_api/dbus/service_constants.h"
+
+namespace chromeos {
+
+ExperimentalBluetoothInputClient::Properties::Properties(
+    dbus::ObjectProxy* object_proxy,
+    const std::string& interface_name,
+    const PropertyChangedCallback& callback)
+    : dbus::PropertySet(object_proxy, interface_name, callback) {
+  RegisterProperty(bluetooth_input::kReconnectModeProperty, &reconnect_mode);
+}
+
+ExperimentalBluetoothInputClient::Properties::~Properties() {
+}
+
+
+// The ExperimentalBluetoothInputClient implementation used in production.
+class ExperimentalBluetoothInputClientImpl
+    : public ExperimentalBluetoothInputClient,
+      public dbus::ObjectManager::Interface {
+ public:
+  explicit ExperimentalBluetoothInputClientImpl(dbus::Bus* bus)
+      : bus_(bus),
+        weak_ptr_factory_(this) {
+    object_manager_ = bus_->GetObjectManager(
+        bluetooth_manager::kBluetoothManagerServiceName,
+        dbus::ObjectPath(bluetooth_manager::kBluetoothManagerServicePath));
+    object_manager_->RegisterInterface(
+        bluetooth_input::kExperimentalBluetoothInputInterface, this);
+  }
+
+  virtual ~ExperimentalBluetoothInputClientImpl() {
+    object_manager_->UnregisterInterface(
+        bluetooth_input::kExperimentalBluetoothInputInterface);
+  }
+
+  // ExperimentalBluetoothInputClient override.
+  virtual void AddObserver(
+      ExperimentalBluetoothInputClient::Observer* observer) OVERRIDE {
+    DCHECK(observer);
+    observers_.AddObserver(observer);
+  }
+
+  // ExperimentalBluetoothInputClient override.
+  virtual void RemoveObserver(
+      ExperimentalBluetoothInputClient::Observer* observer) OVERRIDE {
+    DCHECK(observer);
+    observers_.RemoveObserver(observer);
+  }
+
+  // dbus::ObjectManager::Interface override.
+  virtual dbus::PropertySet* CreateProperties(
+      dbus::ObjectProxy* object_proxy,
+      const dbus::ObjectPath& object_path,
+      const std::string& interface_name) {
+    Properties* properties = new Properties(
+        object_proxy, interface_name,
+        base::Bind(&ExperimentalBluetoothInputClientImpl::OnPropertyChanged,
+                   weak_ptr_factory_.GetWeakPtr(),
+                   object_path));
+    return static_cast<dbus::PropertySet*>(properties);
+  }
+
+  // ExperimentalBluetoothInputClient override.
+  virtual Properties* GetProperties(const dbus::ObjectPath& object_path)
+      OVERRIDE {
+    return static_cast<Properties*>(
+        object_manager_->GetProperties(
+            object_path,
+            bluetooth_input::kExperimentalBluetoothInputInterface));
+  }
+
+ private:
+  // Called by dbus::ObjectManager when an object with the input interface
+  // is created. Informs observers.
+  void ObjectAdded(const dbus::ObjectPath& object_path,
+                   const std::string& interface_name) OVERRIDE {
+    FOR_EACH_OBSERVER(ExperimentalBluetoothInputClient::Observer, observers_,
+                      InputAdded(object_path));
+  }
+
+  // Called by dbus::ObjectManager when an object with the input interface
+  // is removed. Informs observers.
+  void ObjectRemoved(const dbus::ObjectPath& object_path,
+                     const std::string& interface_name) OVERRIDE {
+    FOR_EACH_OBSERVER(ExperimentalBluetoothInputClient::Observer, observers_,
+                      InputRemoved(object_path));
+  }
+
+  // Called by BluetoothPropertySet when a property value is changed,
+  // either by result of a signal or response to a GetAll() or Get()
+  // call. Informs observers.
+  void OnPropertyChanged(const dbus::ObjectPath& object_path,
+                         const std::string& property_name) {
+    FOR_EACH_OBSERVER(ExperimentalBluetoothInputClient::Observer, observers_,
+                      InputPropertyChanged(object_path, property_name));
+  }
+
+  dbus::Bus* bus_;
+  dbus::ObjectManager* object_manager_;
+
+  // List of observers interested in event notifications from us.
+  ObserverList<ExperimentalBluetoothInputClient::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<ExperimentalBluetoothInputClientImpl> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(ExperimentalBluetoothInputClientImpl);
+};
+
+ExperimentalBluetoothInputClient::ExperimentalBluetoothInputClient() {
+}
+
+ExperimentalBluetoothInputClient::~ExperimentalBluetoothInputClient() {
+}
+
+ExperimentalBluetoothInputClient* ExperimentalBluetoothInputClient::Create(
+    DBusClientImplementationType type,
+    dbus::Bus* bus) {
+  if (type == REAL_DBUS_CLIENT_IMPLEMENTATION)
+    return new ExperimentalBluetoothInputClientImpl(bus);
+  DCHECK_EQ(STUB_DBUS_CLIENT_IMPLEMENTATION, type);
+  return new FakeBluetoothInputClient();
+}
+
+}  // namespace chromeos