Merge pull request #58 from tr4wzified/properfoldervalidation

Improved location validation

Wabbajack/AppState.cs

@@ -16,7 +16,7 @@ using Wabbajack.Properties;
 
 namespace Wabbajack
 {
-    internal class AppState : INotifyPropertyChanged
+    internal class AppState : INotifyPropertyChanged, IDataErrorInfo
     {
         private ICommand _begin;
 
@@ -158,6 +158,7 @@ namespace Wabbajack
             }
         }
         
+
         public string DownloadLocation
         {
             get => _downloadLocation;
@@ -315,7 +316,46 @@ namespace Wabbajack
 
         public void OnPropertyChanged(string name)
         {
-            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
+            if(PropertyChanged != null)
+            {
+                PropertyChanged(this, new PropertyChangedEventArgs(name));
+            }
+        }
+        public string Error
+        {
+            get { return "Error"; }
+        }
+
+        public string this[string columnName]
+        {
+            get
+            {
+                return Validate(columnName);
+            }
+        }
+        private string Validate(string columnName)
+        {
+            string validationMessage = null;
+            switch (columnName)
+            {
+                case "Location":
+                    if (Location == null)
+                    {
+                        validationMessage = null;
+                    }
+                    else if (Location != null && Directory.Exists(Location) && File.Exists(Path.Combine(Location, "modlist.txt")))
+                    {
+                        Location = Path.Combine(Location, "modlist.txt");
+                        validationMessage = null;
+                        ConfigureForBuild();
+                    }
+                    else
+                    {
+                        validationMessage = "Invalid Mod Organizer profile directory";
+                    }
+                    break;
+            }
+            return validationMessage;
         }
 
         private void UpdateLoop()
@@ -421,20 +461,7 @@ namespace Wabbajack
             else
             {
                 var folder = UIUtils.ShowFolderSelectionDialog("Select Your MO2 profile directory");
-
+                Location = folder;
-                if (folder != null)
-                {
-                    var file = Path.Combine(folder, "modlist.txt");
-                    if(File.Exists(file))
-                    {
-                        Location = file;
-                        ConfigureForBuild();
-                    }
-                    else
-                    {
-                        Utils.Log($"No modlist.txt found at {file}");
-                    }
-                }
             }
         }
 
@@ -500,9 +527,7 @@ namespace Wabbajack
                 th.Priority = ThreadPriority.BelowNormal;
                 th.Start();
             }
-            else
+            else if (_mo2Folder != null)
-            {
-                if (_mo2Folder != null)
             {
                 var compiler = new Compiler(_mo2Folder, msg => LogMsg(msg));
                 compiler.IgnoreMissingFiles = IgnoreMissingFiles;
@@ -547,5 +572,4 @@ namespace Wabbajack
             public string Msg { get; internal set; }
             public int ID { get; internal set; }
         }
-    }
 }

Wabbajack/MainWindow.xaml

@@ -64,8 +64,8 @@
                 <RowDefinition MinHeight="10" />
                 <RowDefinition />
             </Grid.RowDefinitions>
-            <Label Grid.Row="0" Content="MO2 Location:" Grid.Column="0" />
+            <Label Grid.Row="0" Content="MO2 Profile:" Grid.Column="0" />
-            <TextBox Grid.Row="0" Grid.Column="1" Text="{Binding Location}" IsEnabled="{Binding UIReady}"/>
+            <TextBox Grid.Row="0" Grid.Column="1" Text="{Binding Location, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True, NotifyOnValidationError=True}" IsEnabled="{Binding UIReady}"/>
             <Button Grid.Row="0" Content="Select" MinWidth="80" Grid.Column="2" Command="{Binding ChangePath}" IsEnabled="{Binding UIReady}"/>
             <Label Grid.Row="2" Content="Download Location:" Grid.Column="0" />
             <TextBox Grid.Row="2" Grid.Column="1" Text="{Binding DownloadLocation}" IsEnabled="{Binding UIReady}"/>

Wabbajack/Themes/Styles.xaml

@@ -838,6 +838,9 @@
             </Setter.Value>
         </Setter>
         <Style.Triggers>
+            <DataTrigger Binding="{Binding Path=(Validation.HasError), RelativeSource={RelativeSource self}}" Value="True">
+                <Setter Property="ToolTip" Value="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=(Validation.Errors)[0].ErrorContent}"/>
+            </DataTrigger>
             <!--<MultiTrigger>
                 <MultiTrigger.Conditions>
                     <Condition Property="IsInactiveSelectionHighlightEnabled" Value="true"/>