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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_widget_WinModifierKeyState_h_
#define mozilla_widget_WinModifierKeyState_h_

#include "mozilla/RefPtr.h"
#include "mozilla/EventForwards.h"
#include <windows.h>

class nsCString;

namespace mozilla {
namespace widget {

class MOZ_STACK_CLASS ModifierKeyState final
{
public:
  ModifierKeyState();
  ModifierKeyState(bool aIsShiftDown, bool aIsControlDown, bool aIsAltDown);
  ModifierKeyState(Modifiers aModifiers);

  void Update();

  void Unset(Modifiers aRemovingModifiers);
  void Set(Modifiers aAddingModifiers);

  void InitInputEvent(WidgetInputEvent& aInputEvent) const;

  bool IsShift() const;
  bool IsControl() const;
  bool IsAlt() const;
  bool IsAltGr() const;
  bool IsWin() const;

  bool MaybeMatchShortcutKey() const;

  bool IsCapsLocked() const;
  bool IsNumLocked() const;
  bool IsScrollLocked() const;

  MOZ_ALWAYS_INLINE Modifiers GetModifiers() const
  {
    return mModifiers;
  }

private:
  Modifiers mModifiers;

  MOZ_ALWAYS_INLINE void EnsureAltGr();

  void InitMouseEvent(WidgetInputEvent& aMouseEvent) const;
};

const nsCString ToString(const ModifierKeyState& aModifierKeyState);

} // namespace widget
} // namespace mozilla

#endif // #ifndef mozilla_widget_WinModifierKeyState_h_