Dual Pane File Manager

using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;
using IWshRuntimeLibrary;
using Win32API;

namespace JGFSControls
{
	/// <summary>
	/// This class forms the Tag data for ToolStripMenuItem in the Crumb ToolBar, TreeNodes and ListViewItems
	/// </summary>
	public class JTagData
	{
		internal bool CanDropOnObject = false;
		internal bool ObjectIsEditable = false;

		internal DateTime LastWriteTime;

		internal System.IO.DriveType DriveType;

		internal Image ThumbImage;

		internal int ImageIndex;
		internal int SelectedImageIndex;
		internal int ThumbImageIndex;

		internal long AvailableFreeSpace = 0L;
		internal long Size = 0L;
		internal long TotalSize = 0L;

		internal ObjectTypes ObjectType = ObjectTypes.NONE;
		internal JShortcuts.ShortCutTypes LinkType = JShortcuts.ShortCutTypes.NONE;

		internal string DisplayName;
		internal string LinkPath;
		internal string Path;
		internal string SortName;
		internal string TypeName;

		internal uint Mask;
		internal uint StateMask;
		internal uint State;

		//	NB Only add file types after FILE as we use > ObjectType.FILE!
		internal enum ObjectTypes		
		{
			NONE,
			DESKTOP,
			COMPUTER,
			NETHOOD,
			DRIVE,
			FOLDER,
			NETSHARE,
			NETWORKCOMPUTER,
			DUMMY,
			FILE,
			LNK,
			SCF,
			URL
		}

		//	Create new from old
		internal JTagData(JTagData tagDataIN)
		{
			this.AvailableFreeSpace = tagDataIN.AvailableFreeSpace;
			this.CanDropOnObject = tagDataIN.CanDropOnObject;
			this.DisplayName = tagDataIN.DisplayName;
			this.DriveType = tagDataIN.DriveType;
			this.ImageIndex = tagDataIN.ImageIndex;
			this.LastWriteTime = tagDataIN.LastWriteTime;
			this.LinkPath = tagDataIN.LinkPath;
			this.LinkType = tagDataIN.LinkType;
			this.Mask = tagDataIN.Mask;
			this.ObjectIsEditable = tagDataIN.ObjectIsEditable;
			this.ObjectType = tagDataIN.ObjectType;
			this.Path = tagDataIN.Path;
			this.SelectedImageIndex = tagDataIN.SelectedImageIndex;
			this.Size = tagDataIN.Size;
			this.SortName = tagDataIN.SortName;
			this.State = tagDataIN.State;
			this.StateMask = tagDataIN.StateMask;
			this.ThumbImage = new Bitmap(tagDataIN.ThumbImage, tagDataIN.ThumbImage.Size);
			this.ThumbImageIndex = tagDataIN.ThumbImageIndex;
			this.TotalSize = tagDataIN.TotalSize;
			this.TypeName = tagDataIN.TypeName;
		}

		internal JTagData(ObjectTypes objectType)
		{
			if (objectType == ObjectTypes.COMPUTER)
				GetComputerInformation();
		}

		internal JTagData(DriveInfo drivInfo)
		{
			this.Path = drivInfo.RootDirectory.ToString();

			JCommon.GetTagDataInfo(this, true, true);
			JCommon.GetTVImageMaskFromPath(this, drivInfo.IsReady);

			this.ObjectType = JTagData.ObjectTypes.DRIVE;
			this.SortName = GetSortPrefix(this) + this.Path;
			this.DriveType = drivInfo.DriveType;
			bool driveIsWriteable = (drivInfo.DriveType == System.IO.DriveType.Fixed) || (drivInfo.DriveType == System.IO.DriveType.Removable) || (drivInfo.DriveType == System.IO.DriveType.Network);
			this.CanDropOnObject = (driveIsWriteable && drivInfo.IsReady);
			this.ObjectIsEditable = false;

			try
			{
				this.TotalSize = drivInfo.TotalSize;
				this.AvailableFreeSpace = drivInfo.AvailableFreeSpace;
			}
			catch
			{
			}
		}

		internal JTagData(DirectoryInfo dInfo)
		{
			this.Path = dInfo.FullName;

			JCommon.GetTagDataInfo(this, true, true);
			JCommon.GetTVImageMaskFromPath(this, true);

			this.ObjectType = JTagData.ObjectTypes.FOLDER;
			this.SortName = GetSortPrefix(this) + this.DisplayName;
			this.ObjectIsEditable = JCommon.IsObjectEditable(dInfo);
			this.CanDropOnObject = this.ObjectIsEditable;

			try
			{
				this.LastWriteTime = dInfo.LastWriteTime;
			}
			catch
			{
			}

			this.Size = 0L;
		}

		internal JTagData(FileInfo fInfo)
		{
			ObjectTypes objectType = ObjectTypes.NONE;

			//	Set Path- used by GetTagDataInfo
			this.Path = fInfo.FullName;

			JCommon.GetTagDataInfo(this, true, true);
			JCommon.GetTVImageMaskFromPath(this, true);

			try
			{
				this.LastWriteTime = fInfo.LastWriteTime;
				this.Size = fInfo.Length;
			}
			catch
			{
			}

			//	Gets ThumbImage
			SetThumbnail(fInfo);

			SetFileType(fInfo, ref objectType);
			this.ObjectType = objectType;
			this.SortName = GetSortPrefix(this) + this.DisplayName;
			this.ObjectIsEditable = true;
		}

		private void GetComputerInformation()
		{
			//	My Computer
			Image imgTemp = null;
			int imageIndex = 0, selectedImageIndex = 0;

			this.DisplayName = SystemInformation.ComputerName;
			this.Path = SystemInformation.ComputerName;
			this.ObjectType = ObjectTypes.COMPUTER;
			this.SortName = GetSortPrefix(this) + this.DisplayName;

			JFSFunctions.GetComputerInfo(true, out imgTemp, out imageIndex, out selectedImageIndex, out this.TypeName);

			this.ImageIndex = imageIndex;
			this.SelectedImageIndex = selectedImageIndex;

			this.ObjectIsEditable = false;

			this.ThumbImage = imgTemp;
		}

		private string GetSortPrefix(JTagData tagData)
		{
			string sortPrefix = "";

			switch (tagData.ObjectType)
			{
				case JTagData.ObjectTypes.NONE:
				case JTagData.ObjectTypes.DUMMY:
					sortPrefix = "";
					break;

				case JTagData.ObjectTypes.DESKTOP:
					sortPrefix = "0";
					break;

				case JTagData.ObjectTypes.COMPUTER:
					sortPrefix = "1";
					break;

				case JTagData.ObjectTypes.NETHOOD:
					sortPrefix = "2";
					break;

				case JTagData.ObjectTypes.DRIVE:
					sortPrefix = "3";
					break;

				case JTagData.ObjectTypes.FOLDER:
					sortPrefix = "4";
					break;

				case JTagData.ObjectTypes.NETSHARE:
					sortPrefix = "5";
					break;

				case JTagData.ObjectTypes.NETWORKCOMPUTER:
					sortPrefix = "6";
					break;

				default:
					sortPrefix = "7";
					break;
			}

			return sortPrefix;
		}

		private string ReadShortcut(FileInfo fInfo, out JShortcuts.ShortCutTypes iType)
		{
			iType = JShortcuts.ShortCutTypes.NONE;
			string targetPath = "";

			IWshShell_Class iwsShell = new IWshShell_Class();
			IWshShortcut_Class iwsShortcut;

			if (fInfo.Exists)
			{
				iwsShortcut = iwsShell.CreateShortcut(fInfo.FullName) as IWshShortcut_Class;
				targetPath = iwsShortcut.TargetPath;
				try
				{
					DirectoryInfo dInfo = new DirectoryInfo(targetPath);
					if (dInfo.Exists)
					{
						iType = JShortcuts.ShortCutTypes.FOLDER;
					}
					else
					{
						FileInfo fInfoCheck = new FileInfo(targetPath);
						if (fInfoCheck.Exists)
						{
							iType = JShortcuts.ShortCutTypes.FILE;
						}
					}
				}
				catch
				{
				}
			}
			return targetPath;
		}

		private void SetFileType(FileInfo fInfo, ref JTagData.ObjectTypes objectType)
		{
			//	This is needed for e.g. drag and drop, translating shortcuts etc.
			//	There may be others to add?

			switch (fInfo.Extension.ToUpper())
			{
				case ".LNK":
					objectType = JTagData.ObjectTypes.LNK;
					break;

				case ".SCF":
					objectType = JTagData.ObjectTypes.SCF;
					break;

				case ".URL":
					objectType = JTagData.ObjectTypes.URL;
					break;

				default:
					objectType = JTagData.ObjectTypes.FILE;
					break;
			}

			if (objectType == JTagData.ObjectTypes.LNK)
				this.LinkPath = ReadShortcut(fInfo, out this.LinkType);
		}

		public override string ToString()
		{
			return this.DisplayName;
		}

		internal void SetThumbnail(FileInfo fInfo)
		{
			string imageFilter = "*.jpg;*.png;*.gif;*.bmp;*.ico";
			Image imgTemp;

			//	Only try for image for image files
			if (imageFilter.Contains(fInfo.Extension.ToLower()))
			{
				try
				{
					//	Image.FromFile locks the image until it is disposed so would prevent moving/deleting the file
					imgTemp = Image.FromFile(fInfo.FullName);
					this.ThumbImage = new Bitmap(imgTemp, 16, 16);
					imgTemp.Dispose();
				}
				catch
				{
				}
			}
			else
			{
				try
				{
					imgTemp = JFSFunctions.ImageFromPath(fInfo.FullName);
					this.ThumbImage = new Bitmap(imgTemp, 16, 16);
					imgTemp.Dispose();
				}
				catch
				{
				}
			}
		}


	}

	class JTagDataSorter : IComparer<JTagData>
	{
		public int Compare(JTagData td1, JTagData td2)
		{
			return string.Compare(td1.SortName, td2.SortName);
		}
	}

}