chrome/browser/ui/webui/options/chromeos/keyboard_handler.h

   1 // Copyright (c) 2012 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 CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_KEYBOARD_HANDLER_H_
   6 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_KEYBOARD_HANDLER_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/prefs/pref_member.h"
  10 #include "chrome/browser/ui/webui/options/options_ui.h"
  11 #include "ui/events/devices/input_device_event_observer.h"
  12
  13 namespace chromeos {
  14 namespace options {
  15
  16 // Customize modifier keys overlay page UI handler.
  17 class KeyboardHandler
  18     : public ::options::OptionsPageUIHandler,
  19       public ui::InputDeviceEventObserver {
  20  public:
  21   KeyboardHandler();
  22   ~KeyboardHandler() override;
  23
  24   // OptionsPageUIHandler implementation.
  25   void GetLocalizedValues(base::DictionaryValue* localized_strings) override;
  26   void InitializePage() override;
  27   void RegisterMessages() override;
  28
  29   // ui::InputDeviceEventObserver:
  30   void OnKeyboardDeviceConfigurationChanged() override;
  31
  32  private:
  33   // Show the keyboard shortcuts overlay from the options page.
  34   void HandleShowKeyboardShortcuts(const base::ListValue* args);
  35
  36   // Shows or hides the CapsLock options based on whether or not there is an
  37   // external keyboard connected.
  38   void UpdateCapsLockOptions() const;
  39
  40   DISALLOW_COPY_AND_ASSIGN(KeyboardHandler);
  41 };
  42
  43 }  // namespace options
  44 }  // namespace chromeos
  45
  46 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_KEYBOARD_HANDLER_H_