Dual Pane File Manager

using System;
using System.Collections.Generic;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;

namespace JFileManager
{
	/// <summary>
	/// Privides additional information to the standard ListViewItem
	/// </summary>
	public class cLVItem : ListViewItem
	{
		public ObjectType ObjectType = ObjectType.NONE;
		public string Path = "";
		public string TypeName = "";
		public DriveType DriveType = DriveType.Unknown;		
		public ObjectType LinkType = ObjectType.NONE;
		public string LinkPath = "";
		public long Size = 0L;
		public long TotalSize = 0L;
		public long AvailableFreeSpace = 0L;
		public DateTime LastWriteTime;
		public FileAttributes Attributes;
		public string SortName = "";
		public bool IsReady = false;
		public int Mask = 0;
		public int StateMask = 0;
		public int State = 0;
		public string VolumeLabel = "";

		public cLVItem(cJDriveInfo jDriveInfo)
		{
			//	Class Data
			this.ObjectType = jDriveInfo.ObjectType;
			this.Path = jDriveInfo.Path;
			this.TypeName = jDriveInfo.TypeName;
			this.TotalSize = jDriveInfo.TotalSize;
			this.AvailableFreeSpace = jDriveInfo.AvailableFreeSpace;
			this.DriveType = jDriveInfo.DriveType;
			this.IsReady = jDriveInfo.IsReady;
			this.Mask = jDriveInfo.Mask;
			this.StateMask = jDriveInfo.StateMask;
			this.State = jDriveInfo.State;
			this.VolumeLabel = jDriveInfo.VolumeLabel;

			//	ListViewItem Data
			this.Text = jDriveInfo.DisplayName;
			this.ImageIndex = jDriveInfo.IconIndex;
		}

		public cLVItem(DirectoryInfo dInfo)
		{
			this.ObjectType = ObjectType.FOLDER;
			this.Path = dInfo.FullName;
			this.SortName = "0" + this.Path;
			
			//	There can be an issue here with some CD-R and virtual CD
			try
			{
				this.LastWriteTime = dInfo.LastWriteTime;
			}
			catch
			{
			}

			this.Attributes = dInfo.Attributes;
			this.Size = 0L;
			this.IsReady = true;

			this.GetSHFileInfo();

			cCommon.GetLVImageMask(this.Path, out this.Mask, out this.StateMask, out this.State);
		}

		public cLVItem(FileInfo fInfo)
		{
			ObjectType oType = ObjectType.NONE;

			this.Path = fInfo.FullName;
			this.SortName = "1" + this.Path;
			
			//	There can be an issue here with some CD-R and virtual CD
			try
			{
				this.LastWriteTime = fInfo.LastWriteTime;
				this.Size = fInfo.Length;
			}
			catch
			{
			}

			this.Attributes = fInfo.Attributes;

			this.GetSHFileInfo();

			SetFileType(fInfo, ref this.ObjectType);

			this.LinkPath = "";

			if (this.ObjectType == ObjectType.LNK)
			{
				this.LinkPath = cCommon.ReadShortcut(fInfo, out oType);
				if (oType == ObjectType.FOLDER)
				{
					this.LinkType = ObjectType.FOLDER;
				}
				if (oType == ObjectType.FILE)
				{
					this.LinkType = ObjectType.FILE;
				}
			}

			cCommon.GetLVImageMask(this.Path, out this.Mask, out this.StateMask, out this.State);
		}

		private void GetSHFileInfo()
		{
			SHFILEINFO shfi = new SHFILEINFO();

			UInt32 uFlags = (uint)(SHGFI.SHGFI_ICON | SHGFI.SHGFI_SMALLICON | SHGFI.SHGFI_TYPENAME | SHGFI.SHGFI_ADDOVERLAYS | SHGFI.SHGFI_SYSICONINDEX | SHGFI.SHGFI_DISPLAYNAME);
			IntPtr ipTemp = cCommon.SHGetFileInfo(this.Path, 0, out shfi, Marshal.SizeOf(shfi), uFlags);
			
			// Check result
			if (ipTemp != IntPtr.Zero)
			{
				this.Text = shfi.szDisplayName;
				this.TypeName = shfi.szTypeName;
				this.ImageIndex = shfi.iIcon;
			}

			if (shfi.hIcon != IntPtr.Zero)
				cCommon.DestroyIcon(shfi.hIcon);
		}

		private void SetFileType(FileInfo fiCurrent, ref ObjectType oType)
		{
			//	This is needed for e.g. drag and drop, translating shortcuts etc.
			//	There may be other extensions to add?

			switch (fiCurrent.Extension.ToUpper())
			{
				case ".LNK":
					oType = ObjectType.LNK;
					break;

				case ".SCF":
					oType = ObjectType.SCF;
					break;

				case ".URL":
					oType = ObjectType.URL;
					break;

				default:
					oType = ObjectType.FILE;
					break;
			}
		}

		public bool CanWrite
		{
			get
			{
				return cUserFileAccessRights.CanWrite(this.Path);
			}
		}

		public bool IsEditable
		{
			get
			{
				if (this.ObjectType < ObjectType.FILE && this.ObjectType != ObjectType.FOLDER)
					return false;
				return this.CanWrite;
			}
		}

		public bool IsWriteable
		{
			get
			{
				return (this.DriveType == DriveType.Fixed) || (this.DriveType == DriveType.Removable) || (this.DriveType == DriveType.Network);
			}
		}

		public void UpdateDriveData(cJDriveInfo jDriveInfo)
		{
			cJDriveInfo jDriveInfoNew = cJDriveInfoCollection.UpdateDriveData(jDriveInfo);
			//	Class Data
			this.ObjectType = jDriveInfoNew.ObjectType;
			this.Path = jDriveInfoNew.Path;
			this.TypeName = jDriveInfoNew.TypeName;
			this.TotalSize = jDriveInfoNew.TotalSize;
			this.AvailableFreeSpace = jDriveInfoNew.AvailableFreeSpace;
			this.DriveType = jDriveInfoNew.DriveType;
			this.IsReady = jDriveInfoNew.IsReady;
			this.Mask = jDriveInfoNew.Mask;
			this.StateMask = jDriveInfoNew.StateMask;
			this.State = jDriveInfoNew.State;
			this.VolumeLabel = jDriveInfoNew.VolumeLabel;

			//	ListViewItem Data
			this.Text = jDriveInfoNew.DisplayName;
			this.ImageIndex = jDriveInfoNew.IconIndex;
		}

	}
}