services/device/public/mojom/input_service.mojom

// Copyright 2017 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.

module device.mojom;

// This input_service.mojom defines structs and interfaces for providing
// information and notifiations about connected/disconnected input/HID
// devices.

enum InputDeviceSubsystem {
  SUBSYSTEM_HID = 0,
  SUBSYSTEM_INPUT = 1,
  SUBSYSTEM_UNKNOWN = 2,
};

enum InputDeviceType {
  TYPE_BLUETOOTH = 0,
  TYPE_USB = 1,
  TYPE_SERIO = 2,
  TYPE_UNKNOWN = 3,
};

struct InputDeviceInfo {
  string id;
  string name;
  InputDeviceSubsystem subsystem;
  InputDeviceType type;

  bool is_accelerometer;
  bool is_joystick;
  bool is_key;
  bool is_keyboard;
  bool is_mouse;
  bool is_tablet;
  bool is_touchpad;
  bool is_touchscreen;
};

interface InputDeviceManagerClient {
  // Notifies the client that a device is added.
  InputDeviceAdded(InputDeviceInfo device_info);

  // Notifies the client that a device is removed.
  InputDeviceRemoved(string id);
};

interface InputDeviceManager {
  // Returns list of all currently connected input/hid devices and set client
  // to InputDeviceManager. The implementation of InputDeviceManager guarantees
  // the returned callback is always posted earlier than InputDeviceAdded()
  // and InputDeviceRemoved().
  GetDevicesAndSetClient(associated InputDeviceManagerClient client) =>
                        (array<InputDeviceInfo> devices);

  // Returns list of all currently connected input/hid devices only.
  GetDevices() => (array<InputDeviceInfo> devices);
};