(FileExistsDialog): new modal window.

added FileErrorDialog logic to GarConvert.

GUI/FileExistsDialog.xaml.cs

@@ -0,0 +1,72 @@
+using System;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+
+namespace GARbro.GUI
+{
+    /// <summary>
+    /// Interaction logic for FileExistsDialog.xaml
+    /// </summary>
+    public partial class FileExistsDialog : Rnd.Windows.ModalWindow
+    {
+        public FileExistsDialog (string title, string text)
+        {
+            InitializeComponent ();
+            this.Title = title;
+            this.Notice.Text = text;
+        }
+
+        new public FileExistsDialogResult ShowDialog ()
+        {
+            bool dialog_result = base.ShowDialog() ?? false;
+            if (!dialog_result)
+                FileAction = ExistingFileAction.Abort;
+            return new FileExistsDialogResult
+            {
+                Action      = FileAction,
+                ApplyToAll  = ApplyToAll.IsChecked ?? false
+            };
+        }
+
+        public ExistingFileAction FileAction { get; set; }
+
+        private void SkipButton_Click (object sender, RoutedEventArgs e)
+        {
+            this.DialogResult = true;
+            this.FileAction = ExistingFileAction.Skip;
+        }
+
+        private void OverwriteButton_Click (object sender, RoutedEventArgs e)
+        {
+            this.DialogResult = true;
+            this.FileAction = ExistingFileAction.Overwrite;
+        }
+
+        private void RenameButton_Click (object sender, RoutedEventArgs e)
+        {
+            this.DialogResult = true;
+            this.FileAction = ExistingFileAction.Rename;
+        }
+
+        private void AbortButton_Click (object sender, RoutedEventArgs e)
+        {
+            this.DialogResult = false;
+            this.FileAction = ExistingFileAction.Abort;
+        }
+    }
+
+    public enum ExistingFileAction
+    {
+        Skip,
+        Overwrite,
+        Rename,
+        Abort
+    }
+
+    public struct FileExistsDialogResult
+    {
+        public ExistingFileAction Action;
+        public bool ApplyToAll;
+    }
+}