From ef9bb42252601e50dd55de32b212115f1953474b Mon Sep 17 00:00:00 2001
From: Nikita Tsukanov <keks9n@gmail.com>
Date: Sat, 2 May 2020 20:24:25 +0300
Subject: [PATCH 1/3] Trigger repaint on VisibilityNotify events

---
 src/Avalonia.X11/X11Window.cs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Avalonia.X11/X11Window.cs b/src/Avalonia.X11/X11Window.cs
index 3a919e2bc4..60b739f43a 100644
--- a/src/Avalonia.X11/X11Window.cs
+++ b/src/Avalonia.X11/X11Window.cs
@@ -333,7 +333,9 @@ namespace Avalonia.X11
             }
             else if (ev.type == XEventName.UnmapNotify)
                 _mapped = false;
-            else if (ev.type == XEventName.Expose)
+            else if (ev.type == XEventName.Expose ||
+                     (ev.type == XEventName.VisibilityNotify &&
+                      ev.VisibilityEvent.state < 2))
             {
                 if (!_triggeredExpose)
                 {

From 2d80a0e29341f54e4b71d4c9f0069079bf0b55c1 Mon Sep 17 00:00:00 2001
From: Nikita Tsukanov <keks9n@gmail.com>
Date: Tue, 5 May 2020 15:04:52 +0300
Subject: [PATCH 2/3] Allow extra options for managed file dialogs

---
 samples/ControlCatalog/Pages/DialogsPage.xaml |  1 +
 .../ControlCatalog/Pages/DialogsPage.xaml.cs  | 14 ++++++++++++++
 .../ManagedFileChooserViewModel.cs            | 12 ++++++++----
 .../ManagedFileDialogExtensions.cs            | 19 +++++++++++++++++--
 .../ManagedFileDialogOptions.cs               |  7 +++++++
 5 files changed, 47 insertions(+), 6 deletions(-)
 create mode 100644 src/Avalonia.Dialogs/ManagedFileDialogOptions.cs

diff --git a/samples/ControlCatalog/Pages/DialogsPage.xaml b/samples/ControlCatalog/Pages/DialogsPage.xaml
index 1ed5c0cbfd..0834e829d8 100644
--- a/samples/ControlCatalog/Pages/DialogsPage.xaml
+++ b/samples/ControlCatalog/Pages/DialogsPage.xaml
@@ -6,6 +6,7 @@
       <Button Name="OpenFile">Open File</Button>
       <Button Name="SaveFile">Save File</Button>
       <Button Name="SelectFolder">Select Folder</Button>
+      <Button Name="OpenBoth">Select Both</Button>
       <Button Name="DecoratedWindow">Decorated window</Button>
       <Button Name="DecoratedWindowDialog">Decorated window (dialog)</Button>
       <Button Name="Dialog">Dialog</Button>
diff --git a/samples/ControlCatalog/Pages/DialogsPage.xaml.cs b/samples/ControlCatalog/Pages/DialogsPage.xaml.cs
index ba1921a185..dcb94a89e7 100644
--- a/samples/ControlCatalog/Pages/DialogsPage.xaml.cs
+++ b/samples/ControlCatalog/Pages/DialogsPage.xaml.cs
@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Reflection;
 using Avalonia.Controls;
+using Avalonia.Dialogs;
 using Avalonia.Markup.Xaml;
 #pragma warning disable 4014
 
@@ -58,6 +59,19 @@ namespace ControlCatalog.Pages
                     Title = "Select folder",
                 }.ShowAsync(GetWindow());
             };
+            this.FindControl<Button>("OpenBoth").Click += async delegate
+            {
+                var res = await new OpenFileDialog()
+                {
+                    Title = "Select both",
+                    AllowMultiple = true
+                }.ShowManagedAsync(GetWindow(), new ManagedFileDialogOptions
+                {
+                    AllowDirectorySelection = true
+                });
+                if (res != null)
+                    Console.WriteLine("Selected: \n" + string.Join("\n", res));
+            };
             this.FindControl<Button>("DecoratedWindow").Click += delegate
             {
                 new DecoratedWindow().Show();
diff --git a/src/Avalonia.Dialogs/ManagedFileChooserViewModel.cs b/src/Avalonia.Dialogs/ManagedFileChooserViewModel.cs
index 189e13802d..1e2d15ab70 100644
--- a/src/Avalonia.Dialogs/ManagedFileChooserViewModel.cs
+++ b/src/Avalonia.Dialogs/ManagedFileChooserViewModel.cs
@@ -14,6 +14,7 @@ namespace Avalonia.Dialogs
 {
     internal class ManagedFileChooserViewModel : InternalViewModelBase
     {
+        private readonly ManagedFileDialogOptions _options;
         public event Action CancelRequested;
         public event Action<string[]> CompleteRequested;
 
@@ -103,8 +104,9 @@ namespace Avalonia.Dialogs
             QuickLinks.AddRange(quickSources.GetAllItems().Select(i => new ManagedFileChooserItemViewModel(i)));
         }
 
-        public ManagedFileChooserViewModel(FileSystemDialog dialog)
+        public ManagedFileChooserViewModel(FileSystemDialog dialog, ManagedFileDialogOptions options)
         {
+            _options = options;
             _disposables = new CompositeDisposable();
 
             var quickSources = AvaloniaLocator.Current
@@ -202,10 +204,12 @@ namespace Avalonia.Dialogs
                     }
                     else
                     {
-                        var invalidItems = SelectedItems.Where(i => i.ItemType == ManagedFileChooserItemType.Folder).ToList();
-                        foreach (var item in invalidItems)
+                        if (!_options.AllowDirectorySelection)
                         {
-                            SelectedItems.Remove(item);
+                            var invalidItems = SelectedItems.Where(i => i.ItemType == ManagedFileChooserItemType.Folder)
+                                .ToList();
+                            foreach (var item in invalidItems) 
+                                SelectedItems.Remove(item);
                         }
 
                         if (!_selectingDirectory)
diff --git a/src/Avalonia.Dialogs/ManagedFileDialogExtensions.cs b/src/Avalonia.Dialogs/ManagedFileDialogExtensions.cs
index 41f526a513..f937216bf8 100644
--- a/src/Avalonia.Dialogs/ManagedFileDialogExtensions.cs
+++ b/src/Avalonia.Dialogs/ManagedFileDialogExtensions.cs
@@ -9,9 +9,10 @@ namespace Avalonia.Dialogs
     {
         private class ManagedSystemDialogImpl<T> : ISystemDialogImpl where T : Window, new()
         {
-            async Task<string[]> Show(SystemDialog d, Window parent)
+            async Task<string[]> Show(SystemDialog d, Window parent, ManagedFileDialogOptions options = null)
             {
-                var model = new ManagedFileChooserViewModel((FileSystemDialog)d);
+                var model = new ManagedFileChooserViewModel((FileSystemDialog)d,
+                    options ?? new ManagedFileDialogOptions());
 
                 var dialog = new T
                 {
@@ -44,6 +45,11 @@ namespace Avalonia.Dialogs
             {
                 return (await Show(dialog, parent))?.FirstOrDefault();
             }
+            
+            public async Task<string[]> ShowFileDialogAsync(FileDialog dialog, Window parent, ManagedFileDialogOptions options)
+            {
+                return await Show(dialog, parent, options);
+            }
         }
 
         public static TAppBuilder UseManagedSystemDialogs<TAppBuilder>(this TAppBuilder builder)
@@ -61,5 +67,14 @@ namespace Avalonia.Dialogs
                 AvaloniaLocator.CurrentMutable.Bind<ISystemDialogImpl>().ToSingleton<ManagedSystemDialogImpl<TWindow>>());
             return builder;
         }
+
+        public static Task<string[]> ShowManagedAsync(this OpenFileDialog dialog, Window parent,
+            ManagedFileDialogOptions options = null) => ShowManagedAsync<Window>(dialog, parent, options);
+        
+        public static Task<string[]> ShowManagedAsync<TWindow>(this OpenFileDialog dialog, Window parent,
+            ManagedFileDialogOptions options = null) where TWindow : Window, new()
+        {
+            return new ManagedSystemDialogImpl<TWindow>().ShowFileDialogAsync(dialog, parent, options);
+        }
     }
 }
diff --git a/src/Avalonia.Dialogs/ManagedFileDialogOptions.cs b/src/Avalonia.Dialogs/ManagedFileDialogOptions.cs
new file mode 100644
index 0000000000..56a3eb9122
--- /dev/null
+++ b/src/Avalonia.Dialogs/ManagedFileDialogOptions.cs
@@ -0,0 +1,7 @@
+namespace Avalonia.Dialogs
+{
+    public class ManagedFileDialogOptions
+    {
+        public bool AllowDirectorySelection { get; set; }
+    }
+}

From 6853969be971e3f4e17f0b7347e62b3a07f75822 Mon Sep 17 00:00:00 2001
From: Dan Walmsley <dan@walms.co.uk>
Date: Tue, 5 May 2020 16:17:28 -0300
Subject: [PATCH 3/3] set dialog title

---
 src/Avalonia.Dialogs/ManagedFileDialogExtensions.cs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Avalonia.Dialogs/ManagedFileDialogExtensions.cs b/src/Avalonia.Dialogs/ManagedFileDialogExtensions.cs
index f937216bf8..f9e62d905b 100644
--- a/src/Avalonia.Dialogs/ManagedFileDialogExtensions.cs
+++ b/src/Avalonia.Dialogs/ManagedFileDialogExtensions.cs
@@ -17,6 +17,7 @@ namespace Avalonia.Dialogs
                 var dialog = new T
                 {
                     Content = new ManagedFileChooser(),
+                    Title = d.Title,
                     DataContext = model
                 };