Enabled/disable touch screen in TabletPowerButtonController

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"
@@ skipping 168 matching lines @@
 
   // Updates the on/off status of the touchscreen/touchpad from the active
   // user's preferences.
   void UpdateTouchDevicesStatusFromActiveProfilePrefs();
 
   // Toggles the status of Touchscreen/Touchpad on or off and updates the local
   // prefs.
   void ToggleTouchscreen();
   void ToggleTouchpad();
 
+  // Returns true if Touchscreen is on, otherwise false.
+  bool IsTouchscreenEnabled() const;
+
   // Calls |callback|, possibly 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 39 matching lines @@
 
  private:
   virtual void SetInternalTouchpadEnabled(bool enabled) {}
   virtual void SetTouchscreensEnabled(bool enabled) {}
 };
 
 }  // namespace system
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_SYSTEM_INPUT_DEVICE_SETTINGS_H_