FileDialog2 improvements

- Expose table/tree style properties
- Rename Monochrome to UseColors and default to false
- IconGetter no longer forces space
- On Windows in Scenario just use a backslash for folder icon (i.e. not unicode)
-

Terminal.Gui/Windows/FileDialog2.cs

@@ -35,6 +35,16 @@ namespace Terminal.Gui {
 			public string FileMustExistFeedback { get; internal set; } = Strings.fdFileMustExistFeedback;
 			public string DirectoryAlreadyExistsFeedback { get; internal set; } = Strings.fdDirectoryAlreadyExistsFeedback;
 			public string FileOrDirectoryMustExistFeedback { get; internal set; } = Strings.fdFileOrDirectoryMustExistFeedback;
+
+			/// <summary>
+			/// Gets the style settings for the table of files (in currently selected directory).
+			/// </summary>
+			public TableView.TableStyle TableStyle { get; internal set; }
+
+			/// <summary>
+			/// Gets the style settings for the collapse-able directory/places tree
+			/// </summary>
+			public TreeStyle TreeStyle { get; internal set; }
 		}
 
 		/// <summary>
@@ -199,6 +209,7 @@ namespace Terminal.Gui {
 				FullRowSelect = true,
 			};
 			this.tableView.AddKeyBinding (Key.Space, Command.ToggleChecked);
+			Style.TableStyle = tableView.Style;
 			this.tableView.KeyPress += (k) => {
 				if (this.tableView.SelectedRow <= 0) {
 					this.NavigateIf (k, Key.CursorUp, this.tbPath);
@@ -224,7 +235,7 @@ namespace Terminal.Gui {
 
 			this.treeView.TreeBuilder = new FileDialogTreeBuilder ();
 			this.treeView.AspectGetter = (m) => m is DirectoryInfo d ? d.Name : m.ToString ();
-
+			this.Style.TreeStyle = treeView.Style;
 
 			try {
 				this.treeView.AddObjects (
@@ -512,9 +523,10 @@ namespace Terminal.Gui {
 
 		/// <summary>
 		/// Gets or Sets a value indicating whether different colors
-		/// should be used for different file types/directories.
+		/// should be used for different file types/directories.  Defaults
+		/// to false.
 		/// </summary>
-		public bool Monochrome { get; set; }
+		public bool UseColors { get; set; }
 
 		/// <summary>
 		/// Gets or Sets a collection of file types that the user can/must select. Only applies
@@ -940,7 +952,7 @@ namespace Terminal.Gui {
 				var icon = stats.IsParent ? null : IconGetter?.Invoke (stats.FileSystemInfo);
 
 				if (icon != null) {
-					return icon + " " + stats.Name;
+					return icon + stats.Name;
 				}
 				return stats.Name;
 			};
@@ -1155,7 +1167,7 @@ namespace Terminal.Gui {
 		{
 			var stats = this.RowToStats (args.RowIndex);
 
-			if (Monochrome) {
+			if (!UseColors) {
 				return ColorSchemeDefault;
 			}
 

UICatalog/Scenarios/FileDialog2Examples.cs

@@ -2,6 +2,7 @@
 using System.Collections;
 using System.IO;
 using System.Linq;
+using System.Runtime.InteropServices;
 using Terminal.Gui;
 using Terminal.Gui.Graphs;
 using static Terminal.Gui.OpenDialog;
@@ -12,7 +13,7 @@ namespace UICatalog.Scenarios {
 	public class FileDialog2Examples : Scenario {
 		private CheckBox cbMustExist;
 		private CheckBox cbIcons;
-		private CheckBox cbMonochrome;
+		private CheckBox cbUseColors;
 		private CheckBox cbCaseSensitive;
 		private CheckBox cbAllowMultipleSelection;
 
@@ -32,8 +33,8 @@ namespace UICatalog.Scenarios {
 			cbIcons = new CheckBox ("Icons") { Checked = true, Y = y++, X=x };
 			Win.Add (cbIcons);
 
-			cbMonochrome = new CheckBox ("Monochrome") { Checked = false, Y = y++, X=x};
-			Win.Add (cbMonochrome);
+			cbUseColors = new CheckBox ("Use Colors") { Checked = false, Y = y++, X=x};
+			Win.Add (cbUseColors);
 
 			cbCaseSensitive = new CheckBox ("Case Sensitive Search") { Checked = false, Y = y++, X=x };
 			Win.Add (cbCaseSensitive);
@@ -114,7 +115,7 @@ namespace UICatalog.Scenarios {
 					fd.SearchMatcher = new CaseSensitiveSearchMatcher ();
 				}
 
-				fd.Monochrome = cbMonochrome.Checked ?? false;
+				fd.UseColors = cbUseColors.Checked ?? false;
 
 				if (rgAllowedTypes.SelectedItem > 0) {
 					fd.AllowedTypes.Add (new FileDialog2.AllowedType ("Data File", ".csv", ".tsv"));
@@ -159,11 +160,17 @@ namespace UICatalog.Scenarios {
 
 		private string GetIcon (FileSystemInfo arg)
 		{
-			if (arg is DirectoryInfo) {
-				return "\ua909";
+			// Typically most windows terminals will not have these unicode characters installed
+			// so for the demo lets not bother having any icons on windows
+			if (RuntimeInformation.IsOSPlatform (OSPlatform.Windows)) {
+				return arg is DirectoryInfo ? "\\" : null;
 			}
 
-			return "\u2630";
+			if (arg is DirectoryInfo) {
+				return "\ua909 ";
+			}
+
+			return "\u2630 ";
 		}
 	}
 }