Plugins: Add MustExist/MustNotExist/IsFolder to PluginOptionFilePath

Il2CppInspector.Common/Plugins/API/V100/IPluginOption.cs

@@ -6,6 +6,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 
 namespace Il2CppInspector.PluginAPI.V100
@@ -148,8 +149,37 @@ namespace Il2CppInspector.PluginAPI.V100
                 throw new ArgumentException("Path name is required");
 
             // Throws an exception if the path is invalid (file or folder may or may not exist)
-            System.IO.Path.GetFullPath(path ?? "");
+            var fullPath = Path.GetFullPath(path ?? "");
+            var fileName = Path.GetFileName(fullPath);
+
+            if (IsFolder) {
+                if (MustExist && !Directory.Exists(fullPath))
+                    throw new ArgumentException($"Directory {fileName} does not exist");
+                if (MustNotExist && Directory.Exists(fullPath))
+                    throw new ArgumentException($"Directory {fileName} already exists");
             }
+            else {
+                if (MustExist && !File.Exists(fullPath))
+                    throw new ArgumentException($"File {fileName} does not exist");
+                if (MustNotExist && File.Exists(fullPath))
+                    throw new ArgumentException($"File {fileName} already exists");
+            }
+        }
+
+        /// <summary>
+        /// Set this to true if you want the user to specify a folder rather than a file
+        /// </summary>
+        public bool IsFolder = false;
+
+        /// <summary>
+        /// Set this to true if the specified file or folder must exist
+        /// </summary>
+        public bool MustExist = false;
+
+        /// <summary>
+        /// Set this to true if the specified file or folder must not exist
+        /// </summary>
+        public bool MustNotExist = false;
     }
 
     /// <summary>

Il2CppInspector.GUI/Il2CppInspector.GUI.csproj

@@ -9,12 +9,14 @@
     <RuntimeIdentifier>win-x64</RuntimeIdentifier>
     <UseWPF>true</UseWPF>
     <AssemblyName>Il2CppInspector</AssemblyName>
-    <Version>2020.2.1</Version>
+    <Version>2021.1</Version>
     <Authors>Katy Coe</Authors>
     <Company>Noisy Cow Studios</Company>
     <Product>Il2CppInspector Windows Edition</Product>
     <ApplicationManifest>app.manifest</ApplicationManifest>
     <ApplicationIcon>Il2CppInspector.ico</ApplicationIcon>
+    <AssemblyVersion>2021.1.0.0</AssemblyVersion>
+    <FileVersion>2021.1.0.0</FileVersion>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">

Il2CppInspector.GUI/PluginConfigurationDialog.xaml.cs

@@ -25,6 +25,7 @@ using System.Linq;
 using Il2CppInspector.PluginAPI.V100;
 using Il2CppInspector.Reflection;
 using Il2CppInspector;
+using Ookii.Dialogs.Wpf;
 
 namespace Il2CppInspectorGUI
 { 
@@ -134,22 +135,49 @@ namespace Il2CppInspectorGUI
 
             var option = (PluginOptionFilePath) ((Button) sender).DataContext;
 
+            string path = null;
+
+            if (option.IsFolder && option.MustExist) {
+                var openFolderDialog = new VistaFolderBrowserDialog {
+                    SelectedPath = option.Value,
+                    Description = option.Description,
+                    UseDescriptionForTitle = true
+                };
+                if (openFolderDialog.ShowDialog() == true) {
+                    path = openFolderDialog.SelectedPath;
+                }
+            } else if (option.MustExist) {
                 var openFileDialog = new OpenFileDialog {
                     Title = option.Description,
                     Filter = "All files (*.*)|*.*",
                     FileName = option.Value,
-                CheckFileExists = false,
-                CheckPathExists = false
+                    CheckFileExists = true,
+                    CheckPathExists = true
                 };
-
                 if (openFileDialog.ShowDialog() == true) {
+                    path = openFileDialog.FileName;
+                }
+            } else {
+                var saveFileDialog = new SaveFileDialog {
+                    Title = option.Description,
+                    Filter = "All files (*.*)|*.*",
+                    FileName = option.Value,
+                    CheckFileExists = false,
+                    OverwritePrompt = false
+                };
+                if (saveFileDialog.ShowDialog() == true) {
+                    path = saveFileDialog.FileName;
+                }
+            }
+
+            if (path != null) {
                 // This spaghetti saves us from implementing INotifyPropertyChanged on Plugin.Options
                 // (we don't want to expose WPF stuff in our SDK)
                 // Will break if we change the format of the FilePathDataTemplate too much
                 var tb = ((DockPanel) ((Button) sender).Parent).Children.OfType<StackPanel>().First().Children.OfType<TextBox>().First(n => n.Name == "valueControl");
                 try {
                     tb.Clear();
-                    tb.AppendText(openFileDialog.FileName);
+                    tb.AppendText(path);
                     tb.GetBindingExpression(TextBox.TextProperty).UpdateSource();
                 }
                 catch { }