Refactor DBusThreadManager to split away BT clients.

chromeos/dbus/bluetooth_gatt_descriptor_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_BLUETOOTH_GATT_DESCRIPTOR_CLIENT_H_
-#define CHROMEOS_DBUS_BLUETOOTH_GATT_DESCRIPTOR_CLIENT_H_
-
-#include <string>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/callback.h"
-#include "chromeos/chromeos_export.h"
-#include "chromeos/dbus/dbus_client.h"
-#include "dbus/object_path.h"
-#include "dbus/property.h"
-
-namespace chromeos {
-
-// BluetoothGattDescriptorClient is used to communicate with remote GATT
-// characteristic descriptor objects exposed by the Bluetooth daemon.
-class CHROMEOS_EXPORT BluetoothGattDescriptorClient : public DBusClient {
- public:
-  // Structure of properties associated with GATT descriptors.
-  struct Properties : public dbus::PropertySet {
-    // The 128-bit characteristic descriptor UUID. [read-only]
-    dbus::Property<std::string> uuid;
-
-    // Object path of the GATT characteristic the descriptor belongs to.
-    // [read-only]
-    dbus::Property<dbus::ObjectPath> characteristic;
-
-    // The cached value of the descriptor. This property gets updated only after
-    // a successful read request. [read-only]
-    dbus::Property<std::vector<uint8_t>> value;
-
-    Properties(dbus::ObjectProxy* object_proxy,
-               const std::string& interface_name,
-               const PropertyChangedCallback& callback);
-    ~Properties() override;
-  };
-
-  // Interface for observing changes from a remote GATT characteristic
-  // descriptor.
-  class Observer {
-   public:
-    virtual ~Observer() {}
-
-    // Called when the GATT descriptor with object path |object_path| is added
-    // to the system.
-    virtual void GattDescriptorAdded(const dbus::ObjectPath& object_path) {}
-
-    // Called when the GATT descriptor with object path |object_path| is removed
-    // from the system.
-    virtual void GattDescriptorRemoved(const dbus::ObjectPath& object_path) {}
-
-    // Called when the GATT descriptor with object path |object_path| has a
-    // change in the value of the property named |property_name|.
-    virtual void GattDescriptorPropertyChanged(
-        const dbus::ObjectPath& object_path,
-        const std::string& property_name) {}
-  };
-
-  // Callbacks used to report the result of asynchronous methods.
-  typedef base::Callback<void(const std::string& error_name,
-                              const std::string& error_message)> ErrorCallback;
-  typedef base::Callback<void(const std::vector<uint8>& value)> ValueCallback;
-
-  ~BluetoothGattDescriptorClient() override;
-
-  // Adds and removes observers for events on all remote GATT descriptors. Check
-  // the |object_path| parameter of observer methods to determine which GATT
-  // descriptor is issuing the event.
-  virtual void AddObserver(Observer* observer) = 0;
-  virtual void RemoveObserver(Observer* observer) = 0;
-
-  // Returns the list of GATT descriptor object paths known to the system.
-  virtual std::vector<dbus::ObjectPath> GetDescriptors() = 0;
-
-  // Obtain the properties for the GATT descriptor with object path
-  // |object_path|. Values should be copied if needed.
-  virtual Properties* GetProperties(const dbus::ObjectPath& object_path) = 0;
-
-  // Issues a request to read the value of GATT descriptor with object path
-  // |object_path| and returns the value in |callback| on success. On error,
-  // invokes |error_callback|.
-  virtual void ReadValue(const dbus::ObjectPath& object_path,
-                         const ValueCallback& callback,
-                         const ErrorCallback& error_callback) = 0;
-
-  // Issues a request to write the value of GATT descriptor with object path
-  // |object_path| with value |value|. Invokes |callback| on success and
-  // |error_callback| on failure.
-  virtual void WriteValue(const dbus::ObjectPath& object_path,
-                          const std::vector<uint8>& value,
-                          const base::Closure& callback,
-                          const ErrorCallback& error_callback) = 0;
-
-  // Creates the instance.
-  static BluetoothGattDescriptorClient* Create();
-
-  // Constants used to indicate exceptional error conditions.
-  static const char kNoResponseError[];
-  static const char kUnknownDescriptorError[];
-
- protected:
-  BluetoothGattDescriptorClient();
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(BluetoothGattDescriptorClient);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROMEOS_DBUS_BLUETOOTH_GATT_DESCRIPTOR_CLIENT_H_