enhance: AI-based commit message generator (sourcegit-scm#2255)

- Make `AI Assistant` window resizable
- Make `AI Assistant` window non-modal dialog
- Clean up code

Signed-off-by: leo <longshuang@msn.cn>

Author: love-linger

src/Views/AIAssistant.axaml

@@ -4,16 +4,16 @@
                     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
                     xmlns:v="using:SourceGit.Views"
                     xmlns:vm="using:SourceGit.ViewModels"
-                    mc:Ignorable="d" d:DesignWidth="400" d:DesignHeight="120"
+                    mc:Ignorable="d" d:DesignWidth="520" d:DesignHeight="400"
                     x:Class="SourceGit.Views.AIAssistant"
                     x:DataType="vm:AIAssistant"
                     x:Name="ThisControl"
                     Icon="/App.ico"
                     Title="{DynamicResource Text.AIAssistant}"
-                    Width="520" SizeToContent="Height"
-                    CanResize="False"
+                    Width="520" Height="400"
+                    CanResize="True"
                     WindowStartupLocation="CenterOwner">
-  <Grid RowDefinitions="Auto,Auto,Auto">
+  <Grid RowDefinitions="Auto,*,Auto">
     <!-- TitleBar -->
     <Grid Grid.Row="0" Height="28" IsVisible="{Binding !#ThisControl.UseSystemWindowFrame}">
       <Border Background="{DynamicResource Brush.TitleBar}"
@@ -39,7 +39,6 @@
     <!-- AI response -->
     <v:AIResponseView Grid.Row="1"
                       Margin="8"
-                      Height="320"
                       BorderThickness="1"
                       BorderBrush="{DynamicResource Brush.Border2}"
                       Background="{DynamicResource Brush.Contents}"

src/Views/CommitMessageToolBox.axaml.cs

@@ -565,7 +565,7 @@ private async void OnOpenCommitMessagePicker(object sender, RoutedEventArgs e)
             e.Handled = true;
         }
 
-        private async void OnOpenOpenAIHelper(object sender, RoutedEventArgs e)
+        private void OnOpenOpenAIHelper(object sender, RoutedEventArgs e)
         {
             if (DataContext is ViewModels.WorkingCopy vm && sender is Button button && ShowAdvancedOptions)
             {
@@ -588,7 +588,7 @@ private async void OnOpenOpenAIHelper(object sender, RoutedEventArgs e)
 
                 if (services.Count == 1)
                 {
-                    await App.ShowDialog(new ViewModels.AIAssistant(repo, services[0], vm.Staged));
+                    DoOpenAIAssistant(repo, services[0], vm.Staged);
                     e.Handled = true;
                     return;
                 }
@@ -599,9 +599,9 @@ private async void OnOpenOpenAIHelper(object sender, RoutedEventArgs e)
                     var dup = service;
                     var item = new MenuItem();
                     item.Header = service.Name;
-                    item.Click += async (_, ev) =>
+                    item.Click += (_, ev) =>
                     {
-                        await App.ShowDialog(new ViewModels.AIAssistant(repo, dup, vm.Staged));
+                        DoOpenAIAssistant(repo, dup, vm.Staged);
                         ev.Handled = true;
                     };
 
@@ -637,5 +637,16 @@ private void OnOpenConventionalCommitHelper(object _, RoutedEventArgs e)
 
             e.Handled = true;
         }
+
+        private void DoOpenAIAssistant(ViewModels.Repository repo, AI.Service service, List<Models.Change> changes)
+        {
+            var owner = TopLevel.GetTopLevel(this) as Window;
+            if (owner == null)
+                return;
+
+            var assistant = new ViewModels.AIAssistant(repo, service, changes);
+            var view = new AIAssistant() { DataContext = assistant };
+            view.Show(owner);
+        }
     }
 }

src/Views/WorkingCopy.axaml.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.IO;
 
 using Avalonia.Controls;
@@ -927,9 +928,9 @@ public ContextMenu CreateContextMenuForStagedChanges(ViewModels.WorkingCopy vm,
 
                 if (services.Count == 1)
                 {
-                    ai.Click += async (_, e) =>
+                    ai.Click += (_, e) =>
                     {
-                        await App.ShowDialog(new ViewModels.AIAssistant(repo, services[0], selectedStaged));
+                        DoOpenAIAssistant(repo, services[0], selectedStaged);
                         e.Handled = true;
                     };
                 }
@@ -941,9 +942,9 @@ public ContextMenu CreateContextMenuForStagedChanges(ViewModels.WorkingCopy vm,
 
                         var item = new MenuItem();
                         item.Header = service.Name;
-                        item.Click += async (_, e) =>
+                        item.Click += (_, e) =>
                         {
-                            await App.ShowDialog(new ViewModels.AIAssistant(repo, dup, selectedStaged));
+                            DoOpenAIAssistant(repo, dup, selectedStaged);
                             e.Handled = true;
                         };
 
@@ -1369,5 +1370,16 @@ private void TryToAddCustomActionsToContextMenu(ViewModels.Repository repo, Cont
             menu.Items.Add(custom);
             menu.Items.Add(new MenuItem() { Header = "-" });
         }
+
+        private void DoOpenAIAssistant(ViewModels.Repository repo, AI.Service serivce, List<Models.Change> changes)
+        {
+            var owner = TopLevel.GetTopLevel(this) as Window;
+            if (owner == null)
+                return;
+
+            var assistant = new ViewModels.AIAssistant(repo, serivce, changes);
+            var view = new AIAssistant() { DataContext = assistant };
+            view.Show(owner);
+        }
     }
 }