add uiutils

Wabbajack/UIUtils.cs

@@ -0,0 +1,67 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Security.Cryptography.X509Certificates;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Windows.Threading;
+using Microsoft.WindowsAPICodePack.Dialogs;
+using Wabbajack.Common;
+
+namespace Wabbajack
+{
+    public static class UIUtils
+    {
+        
+        public static string ShowFolderSelectionDialog(string prompt)
+        {
+            if (Dispatcher.Thread != Thread.CurrentThread)
+            {
+                var task = new TaskCompletionSource<string>();
+                Dispatcher.Invoke(() =>
+                {
+                    try
+                    {
+                        task.SetResult(ShowFolderSelectionDialog(prompt));
+                    }
+                    catch (Exception ex)
+                    {
+                        task.SetException(ex);
+                    }
+                });
+                task.Task.Wait();
+                if (task.Task.IsFaulted)
+                    throw task.Task.Exception;
+                return task.Task.Result;
+            }
+
+
+            var dlg = new CommonOpenFileDialog();
+            dlg.Title = prompt;
+            dlg.IsFolderPicker = true;
+            dlg.InitialDirectory = Assembly.GetEntryAssembly().Location;
+
+            dlg.AddToMostRecentlyUsedList = false;
+            dlg.AllowNonFileSystemItems = false;
+            dlg.DefaultDirectory = Assembly.GetEntryAssembly().Location;
+            dlg.EnsureFileExists = true;
+            dlg.EnsurePathExists = true;
+            dlg.EnsureReadOnly = false;
+            dlg.EnsureValidNames = true;
+            dlg.Multiselect = false;
+            dlg.ShowPlacesList = true;
+
+            if (dlg.ShowDialog() == CommonFileDialogResult.Ok)
+            {
+                return dlg.FileName;
+                // Do something with selected folder string
+            }
+
+            return null;
+        }
+
+        public static Dispatcher Dispatcher { get; set; }
+    }
+}