- rework: Logging logic and file logging

Nebula.Launcher/MessageBox/MessageView.axaml

@@ -0,0 +1,17 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+             Width="600"
+             Height="400"
+             x:Class="Nebula.Launcher.MessageBox.MessageView">
+    <Grid RowDefinitions="50,*" ColumnDefinitions="*">
+        <Border Grid.Column="0" Background="#222222" Padding="10" BorderBrush="#444444" BorderThickness="0,0,0,3">
+            <Label VerticalAlignment="Center" x:Name="Title">Text</Label>
+        </Border>
+        <Panel Margin="5" Grid.Row="1">
+            <Label x:Name="Message">Message</Label>
+        </Panel>
+    </Grid>
+</UserControl>

Nebula.Launcher/MessageBox/MessageView.axaml.cs

@@ -0,0 +1,25 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+
+namespace Nebula.Launcher.MessageBox;
+
+public partial class MessageView : UserControl, IMessageContainerProvider
+{
+    public MessageView(out IMessageContainerProvider provider)
+    {
+        InitializeComponent();
+        provider = this;
+    }
+
+    public void ShowMessage(string message, string title)
+    {
+        Title.Content = title;
+        Message.Content = message;
+    }
+}
+
+public interface IMessageContainerProvider
+{
+    public void ShowMessage(string message, string title);
+}

Nebula.Launcher/MessageBox/MessageWindow.axaml

@@ -0,0 +1,12 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:messageBox="clr-namespace:Nebula.Launcher.MessageBox"
+        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+        Width="600"
+        Height="400"
+        x:Class="Nebula.Launcher.MessageBox.MessageWindow"
+        Title="MessageWindow">
+    
+</Window>

Nebula.Launcher/MessageBox/MessageWindow.axaml.cs

@@ -0,0 +1,12 @@
+using Avalonia.Controls;
+
+namespace Nebula.Launcher.MessageBox;
+
+public partial class MessageWindow : Window
+{ 
+    public MessageWindow(out IMessageContainerProvider provider)
+    {
+        InitializeComponent();
+        Content = new MessageView(out provider);
+    }
+}