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      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 ASH_HIGH_CONTRAST_HIGH_CONTRAST_CONTROLLER_H_
      6 #define ASH_HIGH_CONTRAST_HIGH_CONTRAST_CONTROLLER_H_
      7 
      8 #include "ash/ash_export.h"
      9 #include "base/basictypes.h"
     10 
     11 namespace aura {
     12 class RootWindow;
     13 class Window;
     14 }
     15 
     16 namespace ash {
     17 
     18 class ASH_EXPORT HighContrastController {
     19  public:
     20   HighContrastController();
     21 
     22   ~HighContrastController() {}
     23 
     24   // Set high contrast mode and update all available displays.
     25   void SetEnabled(bool enabled);
     26 
     27   // Update high contrast mode on the just added display.
     28   void OnRootWindowAdded(aura::Window* root_window);
     29 
     30  private:
     31   // Update high contrast mode on the passed display.
     32   void UpdateDisplay(aura::Window* root_window);
     33 
     34   // Indicates if the high contrast mode is enabled or disabled.
     35   bool enabled_;
     36 
     37   DISALLOW_COPY_AND_ASSIGN(HighContrastController);
     38 };
     39 
     40 }  // namespace ash
     41 
     42 #endif  // ASH_HIGH_CONTRAST_HIGH_CONTRAST_CONTROLLER_H_
     43