src/ui/events/ozone/evdev/device_manager_evdev.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_OZONE_EVDEV_DEVICE_MANAGER_EVDEV_H_
   6 #define UI_EVENTS_OZONE_EVDEV_DEVICE_MANAGER_EVDEV_H_
   7
   8 #include "base/callback.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/files/file_path.h"
  11 #include "base/memory/scoped_ptr.h"
  12
  13 namespace ui {
  14
  15 typedef base::Callback<void(const base::FilePath& file_path)>
  16     EvdevDeviceCallback;
  17
  18 // Interface for scanning & monitoring input devices.
  19 class DeviceManagerEvdev {
  20  public:
  21   virtual ~DeviceManagerEvdev();
  22
  23   // Enumerate devices & start watching for changes.
  24   // Must be balanced by a call to Stop().
  25   virtual void ScanAndStartMonitoring(
  26       const EvdevDeviceCallback& device_added,
  27       const EvdevDeviceCallback& device_removed) = 0;
  28
  29   // Stop watching for device changes.
  30   virtual void Stop() = 0;
  31 };
  32
  33 // Create simple DeviceManagerEvdev that scans /dev/input manually.
  34 scoped_ptr<DeviceManagerEvdev> CreateDeviceManagerManual();
  35
  36 }  // namespace ui
  37
  38 #endif  // UI_EVENTS_OZONE_EVDEV_DEVICE_MANAGER_EVDEV_H_