Refactor DBusThreadManager to split away BT clients.

chromeos/dbus/fake_bluetooth_media_transport_client.h

-// Copyright 2014 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.
-
-#ifndef CHROMEOS_DBUS_FAKE_BLUETOOTH_MEDIA_TRANSPORT_CLIENT_H_
-#define CHROMEOS_DBUS_FAKE_BLUETOOTH_MEDIA_TRANSPORT_CLIENT_H_
-
-#include <map>
-#include <string>
-#include <vector>
-
-#include "base/files/file.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/observer_list.h"
-#include "chromeos/chromeos_export.h"
-#include "chromeos/dbus/bluetooth_media_transport_client.h"
-#include "dbus/object_path.h"
-
-namespace chromeos {
-
-class FakeBluetoothMediaEndpointServiceProvider;
-
-class CHROMEOS_EXPORT FakeBluetoothMediaTransportClient
-    : public BluetoothMediaTransportClient {
- public:
-  struct Properties : public BluetoothMediaTransportClient::Properties {
-    explicit Properties(const PropertyChangedCallback& callback);
-    ~Properties() override;
-
-    void Get(dbus::PropertyBase* property,
-             dbus::PropertySet::GetCallback callback) override;
-    void GetAll() override;
-    void Set(dbus::PropertyBase* property,
-             dbus::PropertySet::SetCallback callback) override;
-  };
-
-  // The default path of the transport object.
-  static const char kTransportPath[];
-
-  // The default properties including device, codec, configuration, state, delay
-  // and volume, owned by a fake media transport object we emulate.
-  static const char kTransportDevicePath[];
-  static const uint8_t kTransportCodec;
-  static const std::vector<uint8_t> kTransportConfiguration;
-  static const uint16_t kTransportDelay;
-  static const uint16_t kTransportVolume;
-
-  // The default MTUs for read and write.
-  static const uint16_t kDefaultReadMtu;
-  static const uint16_t kDefaultWriteMtu;
-
-  FakeBluetoothMediaTransportClient();
-  ~FakeBluetoothMediaTransportClient() override;
-
-  // DBusClient override.
-  void Init(dbus::Bus* bus) override;
-
-  // BluetoothMediaTransportClient override.
-  void AddObserver(Observer* observer) override;
-  void RemoveObserver(Observer* observer) override;
-  Properties* GetProperties(const dbus::ObjectPath& object_path) override;
-  void Acquire(const dbus::ObjectPath& object_path,
-               const AcquireCallback& callback,
-               const ErrorCallback& error_callback) override;
-  void TryAcquire(const dbus::ObjectPath& object_path,
-                  const AcquireCallback& callback,
-                  const ErrorCallback& error_callback) override;
-  void Release(const dbus::ObjectPath& object_path,
-               const base::Closure& callback,
-               const ErrorCallback& error_callback) override;
-
-  // Makes the transport valid/invalid for a given media endpoint. The transport
-  // object is assigned to the given endpoint if valid is true, false
-  // otherwise.
-  void SetValid(FakeBluetoothMediaEndpointServiceProvider* endpoint,
-                bool valid);
-
-  // Set state/volume property to a certain value.
-  void SetState(const dbus::ObjectPath& endpoint_path,
-                const std::string& state);
-  void SetVolume(const dbus::ObjectPath& endpoint_path,
-                 const uint16_t& volume);
-
-  // Writes bytes to the input file descriptor, |input_fd|, associated with a
-  // transport object which is bound to |endpoint_path|.
-  void WriteData(const dbus::ObjectPath& endpoint_path,
-                 const std::vector<char>& bytes);
-
-  // Retrieves the transport object path bound to |endpoint_path|.
-  dbus::ObjectPath GetTransportPath(const dbus::ObjectPath& endpoint_path);
-
- private:
-  // This class is used for simulating the scenario where each media endpoint
-  // has a corresponding transport path and properties. Once an endpoint is
-  // assigned with a transport path, an object of Transport is created.
-  struct Transport {
-    Transport(const dbus::ObjectPath& transport_path,
-              Properties* transport_properties);
-    ~Transport();
-
-    // An unique transport path.
-    dbus::ObjectPath path;
-
-    // The property set bound with |path|.
-    scoped_ptr<Properties> properties;
-
-    // This is the internal end of socketpair created for simulation purposes.
-    // |input_fd| will be initialized when Acquire/TryAcquire is called.
-    scoped_ptr<base::File> input_fd;
-  };
-
-  // Property callback passed while a Properties structure is created.
-  void OnPropertyChanged(const std::string& property_name);
-
-  // Gets the endpoint path associated with the given transport_path.
-  dbus::ObjectPath GetEndpointPath(const dbus::ObjectPath& transport_path);
-
-  // Retrieves the transport structure bound to |endpoint_path|.
-  Transport* GetTransport(const dbus::ObjectPath& endpoint_path);
-
-  // Retrieves the transport structure with |transport_path|.
-  Transport* GetTransportByPath(const dbus::ObjectPath& transport_path);
-
-  // Helper function used by Acquire and TryAcquire to set up the sockpair and
-  // invoke callback/error_callback.
-  void AcquireInternal(bool try_flag,
-                       const dbus::ObjectPath& object_path,
-                       const AcquireCallback& callback,
-                       const ErrorCallback& error_callback);
-
-  // Map of endpoints with valid transport. Each pair is composed of an endpoint
-  // path and a Transport structure containing a transport path and its
-  // properties.
-  std::map<dbus::ObjectPath, Transport*> endpoint_to_transport_map_;
-
-  // Map of valid transports. Each pair is composed of a transport path as the
-  // key and an endpoint path as the value. This map is used to get the
-  // corresponding endpoint path when GetProperties() is called.
-  std::map<dbus::ObjectPath, dbus::ObjectPath> transport_to_endpoint_map_;
-
-  base::ObserverList<BluetoothMediaTransportClient::Observer> observers_;
-
-  DISALLOW_COPY_AND_ASSIGN(FakeBluetoothMediaTransportClient);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROMEOS_DBUS_FAKE_BLUETOOTH_MEDIA_TRANSPORT_CLIENT_H_