It is time.

ui/events/ozone/evdev/keyboard_evdev.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 UI_EVENTS_OZONE_EVDEV_KEYBOARD_EVDEV_H_
-#define UI_EVENTS_OZONE_EVDEV_KEYBOARD_EVDEV_H_
-
-#include <bitset>
-#include <linux/input.h>
-
-#include "ui/events/ozone/evdev/event_device_util.h"
-#include "ui/events/ozone/evdev/event_dispatch_callback.h"
-#include "ui/events/ozone/evdev/events_ozone_evdev_export.h"
-
-namespace ui {
-
-class EventModifiersEvdev;
-
-// Keyboard for evdev.
-//
-// This object is responsible for combining all attached keyboards into
-// one logical keyboard, applying modifiers & implementing key repeat.
-//
-// It also currently also applies the layout (hardcoded as US).
-//
-// TODO(spang): Implement key repeat & turn off kernel repeat.
-class EVENTS_OZONE_EVDEV_EXPORT KeyboardEvdev {
- public:
-  KeyboardEvdev(EventModifiersEvdev* modifiers,
-                const EventDispatchCallback& callback);
-  ~KeyboardEvdev();
-
-  // Handlers for raw key presses & releases.
-  void OnKeyChange(unsigned int code, bool down);
-
- private:
-  void UpdateModifier(unsigned int key, bool down);
-  void DispatchKey(unsigned int key, bool down);
-
-  // Aggregated key state. There is only one bit of state per key; we do not
-  // attempt to count presses of the same key on multiple keyboards.
-  //
-  // A key is down iff the most recent event pertaining to that key was a key
-  // down event rather than a key up event. Therefore, a particular key position
-  // can be considered released even if it is being depresssed on one or more
-  // keyboards.
-  std::bitset<KEY_CNT> key_state_;
-
-  // Callback for dispatching events.
-  EventDispatchCallback callback_;
-
-  // Shared modifier state.
-  EventModifiersEvdev* modifiers_;
-
-  DISALLOW_COPY_AND_ASSIGN(KeyboardEvdev);
-};
-
-}  // namespace ui
-
-#endif  // UI_EVENTS_OZONE_EVDEV_KEYBOARD_EVDEV_H_