From fd3eb0c839e5686a2a10bd8a8fe2f25417c88812 Mon Sep 17 00:00:00 2001
From: Sebastien Pouliot <sebastien.pouliot@gmail.com>
Date: Sun, 24 Apr 2022 11:18:36 -0400
Subject: [PATCH] Add FileChooserDialog to samples app

This shows the original issue on macOS/arm64 (if the rest of the PR is
not applied)

```
GLib.GException: Invalid byte sequence in conversion input
   at GLib.Marshaller.FilenamePtrToString(IntPtr ptr) in /Users/poupou/git/external/GtkSharp/Source/Libs/GLibSharp/Marshaller.cs:line 62
   at GLib.Marshaller.FilenamePtrToStringGFree(IntPtr ptr) in /Users/poupou/git/external/GtkSharp/Source/Libs/GLibSharp/Marshaller.cs:line 68
   at Gtk.FileChooserDialog.get_Filename() in /Users/poupou/git/external/GtkSharp/Source/Libs/GtkSharp/Generated/Gtk/FileChooserDialog.cs:line 222
   at Samples.FileChooserDialogDemo.OnPressed() in /Users/poupou/git/external/GtkSharp/Source/Samples/Sections/Dialogs/FileChooserDialogSection.cs:line 28
   at Gtk.Button.Pressed_cb(IntPtr inst) in /Users/poupou/git/external/GtkSharp/Source/Libs/GtkSharp/Generated/Gtk/Button.cs:line 388
   at GLib.ExceptionManager.RaiseUnhandledException(Exception e, Boolean is_terminal) in /Users/poupou/git/external/GtkSharp/Source/Libs/GLibSharp/ExceptionManager.cs:line 58
   at Gtk.Button.Pressed_cb(IntPtr inst) in /Users/poupou/git/external/GtkSharp/Source/Libs/GtkSharp/Generated/Gtk/Button.cs:line 388
   at Gtk.Application.Run() in /Users/poupou/git/external/GtkSharp/Source/Libs/GtkSharp/Application.cs:line 115
   at Samples.Program.Main(String[] args) in /Users/poupou/git/external/GtkSharp/Source/Samples/Program.cs:line 44
```
---
 .../Dialogs/FileChooserDialogSection.cs       | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 Source/Samples/Sections/Dialogs/FileChooserDialogSection.cs

diff --git a/Source/Samples/Sections/Dialogs/FileChooserDialogSection.cs b/Source/Samples/Sections/Dialogs/FileChooserDialogSection.cs
new file mode 100644
index 000000000..6c75a366a
--- /dev/null
+++ b/Source/Samples/Sections/Dialogs/FileChooserDialogSection.cs
@@ -0,0 +1,32 @@
+using Gtk;
+
+namespace Samples
+{
+    [Section(ContentType = typeof(FileChooserDialog), Category = Category.Dialogs)]
+    class FileChooserDialogSection : ListSection
+	{
+		public FileChooserDialogSection ()
+		{
+			AddItem ($"Press button to open {nameof(FileChooserDialog)} :", new FileChooserDialogDemo ("Press me"));
+		}
+	}
+
+	class FileChooserDialogDemo : Button
+	{
+		public FileChooserDialogDemo (string text) : base (text) { }
+
+		protected override void OnPressed ()
+		{
+			var fcd = new FileChooserDialog ("Open File", null, FileChooserAction.Open);
+			fcd.AddButton (Stock.Cancel, ResponseType.Cancel);
+			fcd.AddButton (Stock.Open, ResponseType.Ok);
+			fcd.DefaultResponse = ResponseType.Ok;
+			fcd.SelectMultiple = false;
+
+			ResponseType response = (ResponseType) fcd.Run ();
+			if (response == ResponseType.Ok)
+			     ApplicationOutput.WriteLine (fcd.Filename);
+			fcd.Destroy ();
+		}
+    }
+}
\ No newline at end of file