Developer Feature: Add Debug Accelerators to Toggle Touchscreen/Touchpad On or Off (CrOS)

chrome/browser/chromeos/system/input_device_settings.h

 // Copyright (c) 2012 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 CHROME_BROWSER_CHROMEOS_SYSTEM_INPUT_DEVICE_SETTINGS_H_
 #define CHROME_BROWSER_CHROMEOS_SYSTEM_INPUT_DEVICE_SETTINGS_H_
 
 #include "base/callback.h"
 #include "base/logging.h"
 #include "chromeos/chromeos_export.h"
 
+class PrefRegistrySimple;
+
 namespace chromeos {
 namespace system {
 
 class InputDeviceSettings;
 
 namespace internal {
 
 // Objects of this class are intended to store values of type T, but might have
 // "unset" state. Object will be in "unset" state until Set is called first
 // time.
@@ skipping 136 matching lines @@
 
   // Replaces current instance with |test_settings|. Takes ownership of
   // |test_settings|. Default implementation could be returned back by passing
   // NULL to this method.
   static void SetSettingsForTesting(InputDeviceSettings* test_settings);
 
   // Returns true if UI should implement enhanced keyboard support for cases
   // where other input devices like mouse are absent.
   static bool ForceKeyboardDrivenUINavigation();
 
+  // Registers local pref names for touchpad and touch screen statuses.
+  static void RegisterPrefs(PrefRegistrySimple* registry);
+
+  void InitTouchDevicesStatusFromLocalPrefs();
+
+  // Toggles the status of Touchscreen/Touchpad on or off and updates the local
+  // prefs.
+  void ToggleTouchscreen();
+  void ToggleTouchpad();
+
   // Calls |callback| asynchronously after determining if a touchpad is
   // connected.
   virtual void TouchpadExists(const DeviceExistsCallback& callback) = 0;
 
   // Updates several touchpad settings at a time. Updates only settings that
   // are set in |settings| object. It is more efficient to use this method to
   // update several settings then calling Set* methods one by one.
   virtual void UpdateTouchpadSettings(const TouchpadSettings& settings) = 0;
 
   // Sets the touchpad sensitivity in the range [kMinPointerSensitivity,
@@ skipping 25 matching lines @@
   virtual void SetMouseSensitivity(int value) = 0;
 
   // Sets the primary mouse button to the right button if |right| is true.
   virtual void SetPrimaryButtonRight(bool right) = 0;
 
   // Reapplies previously set touchpad settings.
   virtual void ReapplyTouchpadSettings() = 0;
 
   // Reapplies previously set mouse settings.
   virtual void ReapplyMouseSettings() = 0;
+
+ private:
+  virtual void SetInternalTouchpadEnabled(bool enabled) {}
+  virtual void SetTouchscreensEnabled(bool enabled) {}
 };
 
 }  // namespace system
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_SYSTEM_INPUT_DEVICE_SETTINGS_H_