﻿#region License & Metadata

// The MIT License (MIT)
// 
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the 
// Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
// 
// 
// Created On:   2019/01/02 00:41
// Modified On:  2019/01/02 00:43
// Modified By:  Alexis

#endregion




using System.Windows.Input;

namespace SuperMemoAssistant.Sys.Windows
{
  public static class KeyboardEx
  {
    #region Methods

    public static KeyboardModifiers GetKeyboardModifiers()
    {
      bool ctrl  = false;
      bool alt   = false;
      bool shift = false;
      bool meta  = false;

      if (Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl))
        ctrl = true;
      if (Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift))
        shift = true;
      if (Keyboard.IsKeyDown(Key.LeftAlt) || Keyboard.IsKeyDown(Key.RightAlt))
        alt = true;
      if (Keyboard.IsKeyDown(Key.LWin) || Keyboard.IsKeyDown(Key.RWin))
        meta = true;

      return new KeyboardModifiers(ctrl,
                                   alt,
                                   shift,
                                   meta);
    }

    #endregion
  }

  public class KeyboardModifiers
  {
    #region Constructors

    public KeyboardModifiers(bool ctrl,
                             bool alt,
                             bool shift,
                             bool meta)
    {
      Ctrl  = ctrl;
      Alt   = alt;
      Shift = shift;
      Meta  = meta;
    }

    #endregion




    #region Properties & Fields - Public

    public bool Ctrl  { get; }
    public bool Alt   { get; }
    public bool Shift { get; }
    public bool Meta  { get; }

    #endregion
  }
}
