using System;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace BrightIdeasSoftware
{
    /// <summary>
    /// Wrapper for all native method calls on ListView controls
    /// </summary>
    internal class NativeMethods
    {
        private const int LVM_FIRST = 0x1000;
        private const int LVM_SCROLL = LVM_FIRST + 20;
        private const int LVM_GETHEADER = LVM_FIRST + 31;
        private const int LVM_GETCOUNTPERPAGE = LVM_FIRST + 40;
        private const int LVM_SETITEMSTATE = LVM_FIRST + 43;
        private const int LVM_SETEXTENDEDLISTVIEWSTYLE = LVM_FIRST + 54;
        private const int LVM_SETITEM = LVM_FIRST + 76;
        private const int LVM_GETCOLUMN = LVM_FIRST + 95;
        private const int LVM_SETCOLUMN = LVM_FIRST + 96;

        private const int LVS_EX_SUBITEMIMAGES = 0x0002;

        private const int LVIF_TEXT = 0x0001;
        private const int LVIF_IMAGE = 0x0002;
        private const int LVIF_PARAM = 0x0004;
        private const int LVIF_STATE = 0x0008;
        private const int LVIF_INDENT = 0x0010;
        private const int LVIF_NORECOMPUTE = 0x0800;

        private const int LVCF_FMT = 0x0001;
        private const int LVCF_WIDTH = 0x0002;
        private const int LVCF_TEXT = 0x0004;
        private const int LVCF_SUBITEM = 0x0008;
        private const int LVCF_IMAGE = 0x0010;
        private const int LVCF_ORDER = 0x0020;
        private const int LVCFMT_LEFT = 0x0000;
        private const int LVCFMT_RIGHT = 0x0001;
        private const int LVCFMT_CENTER = 0x0002;
        private const int LVCFMT_JUSTIFYMASK = 0x0003;

        private const int LVCFMT_IMAGE = 0x0800;
        private const int LVCFMT_BITMAP_ON_RIGHT = 0x1000;
        private const int LVCFMT_COL_HAS_IMAGES = 0x8000;

        private const int HDM_FIRST = 0x1200;
        private const int HDM_HITTEST = HDM_FIRST + 6;
        private const int HDM_GETITEM = HDM_FIRST + 11;
        private const int HDM_SETITEM = HDM_FIRST + 12;

        private const int HDI_WIDTH = 0x0001;
        private const int HDI_TEXT = 0x0002;
        private const int HDI_FORMAT = 0x0004;
        private const int HDI_BITMAP = 0x0010;
        private const int HDI_IMAGE = 0x0020;

        private const int HDF_LEFT = 0x0000;
        private const int HDF_RIGHT = 0x0001;
        private const int HDF_CENTER = 0x0002;
        private const int HDF_JUSTIFYMASK = 0x0003;
        private const int HDF_RTLREADING = 0x0004;
        private const int HDF_STRING = 0x4000;
        private const int HDF_BITMAP = 0x2000;
        private const int HDF_BITMAP_ON_RIGHT = 0x1000;
        private const int HDF_IMAGE = 0x0800;
        private const int HDF_SORTUP = 0x0400;
        private const int HDF_SORTDOWN = 0x0200;

        private const int SB_HORZ = 0;
        private const int SB_VERT = 1;
        private const int SB_CTL = 2;
        private const int SB_BOTH = 3;

        private const int SIF_RANGE = 0x0001;
        private const int SIF_PAGE = 0x0002;
        private const int SIF_POS = 0x0004;
        private const int SIF_DISABLENOSCROLL = 0x0008;
        private const int SIF_TRACKPOS = 0x0010;
        private const int SIF_ALL = (SIF_RANGE | SIF_PAGE | SIF_POS | SIF_TRACKPOS);

        private const int ILD_NORMAL = 0x00000000;
        private const int ILD_TRANSPARENT = 0x00000001;
        private const int ILD_MASK = 0x00000010;
        private const int ILD_IMAGE = 0x00000020;
        private const int ILD_BLEND25 = 0x00000002;
        private const int ILD_BLEND50 = 0x00000004;

        [StructLayout(LayoutKind.Sequential)]
        public struct HDITEM
        {
            public int mask;
            public int cxy;
            public IntPtr pszText;
            public IntPtr hbm;
            public int cchTextMax;
            public int fmt;
            public IntPtr lParam;
            public int iImage;
            public int iOrder;
            //if (_WIN32_IE >= 0x0500)
            public int type;
            public IntPtr pvFilter;
        }

        [StructLayout(LayoutKind.Sequential)]
        public class HDHITTESTINFO
        {
            public int pt_x;
            public int pt_y;
            public int flags;
            public int iItem;
        }

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        public struct LVCOLUMN
        {
            public int mask;
            public int fmt;
            public int cx;
            [MarshalAs(UnmanagedType.LPTStr)]
            public string pszText;
            public int cchTextMax;
            public int iSubItem;
            // These are available in Common Controls >= 0x0300
            public int iImage;
            public int iOrder;
        };

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        public struct LVFINDINFO
        {
            public int flags;
            public string psz;
            public IntPtr lParam;
            public int ptX;
            public int ptY;
            public int vkDirection;
        }

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        public struct LVHITTESTINFO
        {
            public int pt_x;
            public int pt_y;
            public int flags;
            public int iItem;
            public int iSubItem;
        }

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        public struct LVITEM
        {
            public int mask;
            public int iItem;
            public int iSubItem;
            public int state;
            public int stateMask;
            [MarshalAs(UnmanagedType.LPTStr)]
            public string pszText;
            public int cchTextMax;
            public int iImage;
            public IntPtr lParam;
            // These are available in Common Controls >= 0x0300
            public int iIndent;
            // These are available in Common Controls >= 0x056
            public int iGroupId;
            public int cColumns;
            public IntPtr puColumns;
        };

        /// <summary>
        /// Notify m header structure.
        /// </summary>
        [StructLayout(LayoutKind.Sequential)]
        public struct NMHDR
        {
            public IntPtr hwndFrom;
            public IntPtr idFrom;
            public int code;
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct NMHEADER
        {
            public NMHDR nhdr;
            public int iItem;
            public int iButton;
            public IntPtr pHDITEM;
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct NMLISTVIEW
        {
            public NativeMethods.NMHDR hdr;
            public int iItem;
            public int iSubItem;
            public int uNewState;
            public int uOldState;
            public int uChanged;
            public IntPtr lParam;
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct NMLVFINDITEM
        {
            public NativeMethods.NMHDR hdr;
            public int iStart;
            public NativeMethods.LVFINDINFO lvfi;
        }

        [StructLayout(LayoutKind.Sequential)]
        public struct RECT
        {
            public int left;
            public int top;
            public int right;
            public int bottom;
        }

        [StructLayout(LayoutKind.Sequential)]
        public class SCROLLINFO
        {
            public int cbSize = Marshal.SizeOf(typeof(NativeMethods.SCROLLINFO));
            public int fMask;
            public int nMin;
            public int nMax;
            public int nPage;
            public int nPos;
            public int nTrackPos;
        }

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        public class TOOLINFO
        {
            public int cbSize = Marshal.SizeOf(typeof(NativeMethods.TOOLINFO));
            public int uFlags;
            public IntPtr hwnd;
            public IntPtr uId;
            public NativeMethods.RECT rect;
            public IntPtr hinst = IntPtr.Zero;
            public IntPtr lpszText;
            public IntPtr lParam = IntPtr.Zero;
        }

        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
        public struct TOOLTIPTEXT
        {
            public NativeMethods.NMHDR hdr;
            public string lpszText;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
            public string szText;
            public IntPtr hinst;
            public int uFlags;
        }