ui/events/devices/device_hotplug_event_observer.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_EVENTS_DEVICES_DEVICE_HOTPLUG_EVENT_OBSERVER_H_
   6 #define UI_EVENTS_DEVICES_DEVICE_HOTPLUG_EVENT_OBSERVER_H_
   7
   8 #include <vector>
   9
  10 #include "ui/events/devices/events_devices_export.h"
  11
  12 namespace ui {
  13
  14 struct InputDevice;
  15 struct KeyboardDevice;
  16 struct TouchscreenDevice;
  17
  18 // Listener for specific input device hotplug events.
  19 class EVENTS_DEVICES_EXPORT DeviceHotplugEventObserver {
  20  public:
  21   virtual ~DeviceHotplugEventObserver() {}
  22
  23   // On a hotplug event this is called with the list of available touchscreen
  24   // devices. The set of touchscreen devices may not have changed.
  25   virtual void OnTouchscreenDevicesUpdated(
  26       const std::vector<TouchscreenDevice>& devices) = 0;
  27
  28   // On a hotplug event this is called with the list of available keyboard
  29   // devices. The set of keyboard devices may not have changed.
  30   virtual void OnKeyboardDevicesUpdated(
  31       const std::vector<KeyboardDevice>& devices) = 0;
  32
  33   // On a hotplug event this is called with the list of available mice. The set
  34   // of mice may not have changed.
  35   virtual void OnMouseDevicesUpdated(
  36       const std::vector<InputDevice>& devices) = 0;
  37
  38   // On a hotplug event this is called with the list of available touchpads. The
  39   // set of touchpads may not have changed.
  40   virtual void OnTouchpadDevicesUpdated(
  41       const std::vector<InputDevice>& devices) = 0;
  42
  43   // On completion of the initial startup scan. This means all of the above
  44   // OnDevicesUpdated() methods have been called with a complete list.
  45   virtual void OnDeviceListsComplete() = 0;
  46 };
  47
  48 }  // namespace ui
  49
  50 #endif  // UI_EVENTS_DEVICES_DEVICE_HOTPLUG_EVENT_OBSERVER_H_