using System;

using System.Runtime.InteropServices;



namespace Microsoft.WindowsAPICodePack.Internal

{

  internal enum STPFLAG

  {

    STPF_NONE = 0x0,

    STPF_USEAPPTHUMBNAILALWAYS = 0x1,

    STPF_USEAPPTHUMBNAILWHENACTIVE = 0x2,

    STPF_USEAPPPEEKALWAYS = 0x4,

    STPF_USEAPPPEEKWHENACTIVE = 0x8

  }



  internal enum TBPFLAG

  {

    TBPF_NOPROGRESS = 0,

    TBPF_INDETERMINATE = 0x1,

    TBPF_NORMAL = 0x2,

    TBPF_ERROR = 0x4,

    TBPF_PAUSED = 0x8

  }



  internal enum THBMASK

  {

    THB_BITMAP = 0x1,

    THB_ICON = 0x2,

    THB_TOOLTIP = 0x4,

    THB_FLAGS = 0x8

  }



  [Flags]

  internal enum THBFLAGS

  {

    THBF_ENABLED = 0x00000000,

    THBF_DISABLED = 0x00000001,

    THBF_DISMISSONCLICK = 0x00000002,

    THBF_NOBACKGROUND = 0x00000004,

    THBF_HIDDEN = 0x00000008,

    THBF_NONINTERACTIVE = 0x00000010

  }



  [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]

  internal struct THUMBBUTTON

  {

    /// <summary>

    /// WPARAM value for a THUMBBUTTON being clicked.

    /// </summary>

    internal const int THBN_CLICKED = 0x1800;



    [MarshalAs(UnmanagedType.U4)]

    internal THBMASK dwMask;

    internal uint iId;

    internal uint iBitmap;

    internal IntPtr hIcon;

    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]

    internal string szTip;

    [MarshalAs(UnmanagedType.U4)]

    internal THBFLAGS dwFlags;

  }



  /// <summary>

  /// HRESULT Wrapper

  /// This is intended for Library Internal use only.

  /// </summary>

  public enum HRESULT : uint

  {

    /// <summary>

    /// S_FALSE

    /// </summary>

    S_FALSE = 0x0001,



    /// <summary>

    /// S_OK

    /// </summary>

    S_OK = 0x0000,



    /// <summary>

    /// E_INVALIDARG

    /// </summary>

    E_INVALIDARG = 0x80070057,



    /// <summary>

    /// E_OUTOFMEMORY

    /// </summary>

    E_OUTOFMEMORY = 0x8007000E,



    /// <summary>

    /// E_NOINTERFACE

    /// </summary>

    E_NOINTERFACE = 0x80004002,



    /// <summary>

    /// E_FAIL

    /// </summary>

    E_FAIL = 0x80004005,



    /// <summary>

    /// E_ELEMENTNOTFOUND

    /// </summary>

    E_ELEMENTNOTFOUND = 0x80070490,



    /// <summary>

    /// TYPE_E_ELEMENTNOTFOUND

    /// </summary>

    TYPE_E_ELEMENTNOTFOUND = 0x8002802B,



    /// <summary>

    /// NO_OBJECT

    /// </summary>

    NO_OBJECT = 0x800401E5,



    /// <summary>

    /// Win32 Error code: ERROR_CANCELLED

    /// </summary>

    ERROR_CANCELLED = 1223,



    /// <summary>

    /// ERROR_CANCELLED

    /// </summary>

    E_ERROR_CANCELLED = 0x800704C7,



    /// <summary>

    /// The requested resource is in use

    /// </summary>

    RESOURCE_IN_USE = 0x800700AA,

  }



  [ComImport]

  [Guid("c43dc798-95d1-4bea-9030-bb99e2983a1a")]

  [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]

  internal interface ITaskbarList4

  {

    // ITaskbarList

    [PreserveSig]

    void HrInit();



    [PreserveSig]

    void AddTab(IntPtr hwnd);



    [PreserveSig]

    void DeleteTab(IntPtr hwnd);



    [PreserveSig]

    void ActivateTab(IntPtr hwnd);



    [PreserveSig]

    void SetActiveAlt(IntPtr hwnd);



    // ITaskbarList2

    [PreserveSig]

    void MarkFullscreenWindow(IntPtr hwnd, [MarshalAs(UnmanagedType.Bool)] bool fFullscreen);



    // ITaskbarList3

    [PreserveSig]

    void SetProgressValue(IntPtr hwnd, UInt64 ullCompleted, UInt64 ullTotal);



    [PreserveSig]

    void SetProgressState(IntPtr hwnd, TBPFLAG tbpFlags);



    [PreserveSig]

    void RegisterTab(IntPtr hwndTab, IntPtr hwndMDI);



    [PreserveSig]

    void UnregisterTab(IntPtr hwndTab);



    [PreserveSig]

    void SetTabOrder(IntPtr hwndTab, IntPtr hwndInsertBefore);



    [PreserveSig]

    void SetTabActive(IntPtr hwndTab, IntPtr hwndInsertBefore, uint dwReserved);



    [PreserveSig]

    HRESULT ThumbBarAddButtons(IntPtr hwnd, uint cButtons, [MarshalAs(UnmanagedType.LPArray)] THUMBBUTTON[] pButtons);



    [PreserveSig]

    HRESULT ThumbBarUpdateButtons(IntPtr hwnd, uint cButtons, [MarshalAs(UnmanagedType.LPArray)] THUMBBUTTON[] pButtons);



    [PreserveSig]

    void ThumbBarSetImageList(IntPtr hwnd, IntPtr himl);



    [PreserveSig]

    void SetOverlayIcon(IntPtr hwnd, IntPtr hIcon, [MarshalAs(UnmanagedType.LPWStr)] string pszDescription);



    [PreserveSig]

    void SetThumbnailTooltip(IntPtr hwnd, [MarshalAs(UnmanagedType.LPWStr)] string pszTip);



    [PreserveSig]

    void SetThumbnailClip(IntPtr hwnd, IntPtr prcClip);



    // ITaskbarList4

    void SetTabProperties(IntPtr hwndTab, STPFLAG stpFlags);

  }



  [Guid("56FDF344-FD6D-11d0-958A-006097C9A090")]

  [ClassInterface(ClassInterfaceType.None)]

  [ComImport]

  internal class CTaskbarList { }



  internal static class CoreErrorHelper

  {

    /// <summary>

    /// This is intended for Library Internal use only.

    /// </summary>

    /// <param name="hresult">The error code.</param>

    /// <returns>True if the error code indicates success.</returns>

    public static bool Succeeded(int hresult)

    {

      return (hresult >= 0);

    }

  }



  internal class CoreHelpers

  {

    /// <summary>

    /// Determines if the application is running on Windows Vista or later 7

    /// </summary>

    public static bool RunningOnVistaOrLater

    {

      get

      {

        return Environment.OSVersion.Version.Major >= 6;

      }

    }



    /// <summary>

    /// Determines if the application is running on Windows 7

    /// </summary>

    public static bool RunningOnWin7

    {

      get

      {

        return (Environment.OSVersion.Version.Major > 6) ||

            (Environment.OSVersion.Version.Major == 6 && Environment.OSVersion.Version.Minor >= 1);

      }

    }



    /// <summary>

    /// Throws PlatformNotSupportedException if the application is not running on Windows 7

    /// </summary>

    public static void ThrowIfNotWin7()

    {

      if (!RunningOnWin7)

        throw new PlatformNotSupportedException("Only supported on Windows 7 or newer.");

    }

  }



  internal static class CoreNativeMethods

  {

    public static int LOWORD(long dword)

    {

      return (short)(dword & 0xFFFF);

    }



    public static int HIWORD(long dword, int size)

    {

      return (short)(dword >> size);

    }

  }

}