Automatic deployment of the virtual keyboard.

ash/virtual_keyboard_controller.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 ASH_VIRTUAL_KEYBOARD_CONTROLLER_H_
 #define ASH_VIRTUAL_KEYBOARD_CONTROLLER_H_
 
 #include "ash/ash_export.h"
 #include "ash/shell_observer.h"
+#include "ui/events/input_device_event_observer.h"
 
 namespace ash {
 
 // This class observes enter/leaving maximized mode for virtual keyboard.
-class ASH_EXPORT VirtualKeyboardController : public ShellObserver {
+class ASH_EXPORT VirtualKeyboardController
+    : public ShellObserver,
+      public ui::InputDeviceEventObserver {
  public:
   VirtualKeyboardController();
   virtual ~VirtualKeyboardController();
 
   // ShellObserver:
   virtual void OnMaximizeModeStarted() OVERRIDE;
   virtual void OnMaximizeModeEnded() OVERRIDE;
 
+  // InputDeviceObserver:
+  virtual void OnTouchscreenDeviceConfigurationChanged() OVERRIDE;
+  virtual void OnKeyboardDeviceConfigurationChanged() OVERRIDE;

[flackr, 2014/10/04 01:02:54]

nit: empty line before private:

[rsadam, 2014/10/23 20:10:52]

Done.

  private:
+  virtual void Update();
+  virtual void UpdateDevices();
+
+  bool has_external_keyboard_;
+  bool has_internal_keyboard_;
+  bool has_touchscreen_;
+  bool maximized_;
+
   DISALLOW_COPY_AND_ASSIGN(VirtualKeyboardController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_VIRTUAL_KEYBOARD_CONTROLLER_H_