Added icons for several standard file types.

src/SmartCommander/ViewModels/FileViewModel.cs

@@ -1,13 +1,22 @@
 using ReactiveUI;
 using SmartCommander.Assets;
 using System;
+using System.Collections.Generic;
 using System.IO;
 
 namespace SmartCommander.ViewModels
 {
     public class FileViewModel : ViewModelBase
     {
         private string _name = "";
+        public static readonly List<string> ImageExtensions = new List<string>
+                { "jpg", "jpeg", "jpe", "bmp", "tiff", "gif", "png" };
+        public static readonly List<string> VideoExtensions = new List<string>
+                { "mp4", "mov", "avi", "wmv" };
+        public static readonly List<string> ArchiveExtensions = new List<string>
+                { "zip", "rar", "7z" };
+        public static readonly List<string> DocumentExtensions = new List<string>
+                { "doc", "docx", "txt","xslx", "xsl", "pdf" };
         public FileViewModel()
         {
 
@@ -39,11 +48,28 @@
                 }
                 Size = new FileInfo(fullName).Length.ToString();
                 DateCreated = File.GetCreationTime(fullName);
-                ImageSource = "Assets/file.png";
+                if (ImageExtensions.Contains(Extension.ToLower()))
+                {
+                    ImageSource = "Assets/image.png";
+                }
+                else if (VideoExtensions.Contains(Extension.ToLower()))
+                {
+                    ImageSource = "Assets/video.png";
+                }
+                else if (ArchiveExtensions.Contains(Extension.ToLower()))
+                {
+                    ImageSource = "Assets/archive.png";
+                }
+                else if (DocumentExtensions.Contains(Extension.ToLower()))
+                {
+                    ImageSource = "Assets/document.png";
+                }
+                else
+                {
+                    ImageSource = "Assets/file.png";
+                }
             }
-
         }
-
         public string FullName { get; set; } = "";
         public string Name 
         { 
@@ -63,12 +89,12 @@
                 // moving here is fast since they are guaranteed to be on the same drive
                 if (IsFolder)
                 {
                     destination = Path.Combine(Path.GetDirectoryName(FullName), value);
                     Directory.Move(FullName, destination);
                 }
                 else
                 {
                     destination = Path.Combine(Path.GetDirectoryName(FullName), value + "." + Extension);
                     File.Move(FullName, destination);                   
                 }
                 _name = value;