init

.gitignore

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+Chapplication/bin/
+Chapplication/obj/
+.idea

.idea/.idea.Chapplication/.idea/.gitignore

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+# Default ignored files
+/shelf/
+/workspace.xml
+# Rider ignored files
+/.idea.Chapplication.iml
+/contentModel.xml
+/projectSettingsUpdater.xml
+/modules.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/.idea.Chapplication/.idea/avalonia.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AvaloniaProject">
+    <option name="projectPerEditor">
+      <map>
+        <entry key="Chapplication/MainWindow.axaml" value="Chapplication/Chapplication.csproj" />
+      </map>
+    </option>
+  </component>
+</project>

.idea/.idea.Chapplication/.idea/indexLayout.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="UserContentModel">
+    <attachedFolders />
+    <explicitIncludes />
+    <explicitExcludes />
+  </component>
+</project>

.idea/.idea.Chapplication/.idea/vcs.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings" defaultProject="true" />
+</project>

Chapplication.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Chapplication", "Chapplication\Chapplication.csproj", "{B0B9217D-8FE2-4D94-BC88-45D59963AC6D}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{B0B9217D-8FE2-4D94-BC88-45D59963AC6D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B0B9217D-8FE2-4D94-BC88-45D59963AC6D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B0B9217D-8FE2-4D94-BC88-45D59963AC6D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B0B9217D-8FE2-4D94-BC88-45D59963AC6D}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal

Chapplication/App.axaml

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+<Application xmlns="https://github.com/avaloniaui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             x:Class="Chapplication.App"
+             RequestedThemeVariant="Default">
+             <!-- "Default" ThemeVariant follows system theme variant. "Dark" or "Light" are other available options. -->
+
+    <Application.Styles>
+        <FluentTheme />
+    </Application.Styles>
+</Application>

Chapplication/App.axaml.cs

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+using Avalonia;
+using Avalonia.Controls.ApplicationLifetimes;
+using Avalonia.Markup.Xaml;
+
+namespace Chapplication;
+
+public partial class App : Application
+{
+    public override void Initialize()
+    {
+        AvaloniaXamlLoader.Load(this);
+    }
+
+    public override void OnFrameworkInitializationCompleted()
+    {
+        if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
+        {
+            desktop.MainWindow = new MainWindow();
+        }
+
+        base.OnFrameworkInitializationCompleted();
+    }
+}

Chapplication/Chapplication.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+    <PropertyGroup>
+        <OutputType>Exe</OutputType>
+        <TargetFramework>net9.0</TargetFramework>
+        <Nullable>enable</Nullable>
+        <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
+        <ApplicationManifest>app.manifest</ApplicationManifest>
+        <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="Avalonia" Version="11.2.1"/>
+        <PackageReference Include="Avalonia.Desktop" Version="11.2.1"/>
+        <PackageReference Include="Avalonia.Themes.Fluent" Version="11.2.1"/>
+        <PackageReference Include="Avalonia.Fonts.Inter" Version="11.2.1"/>
+        <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
+        <PackageReference Include="Avalonia.Diagnostics" Version="11.2.1">
+            <IncludeAssets Condition="'$(Configuration)' != 'Debug'">None</IncludeAssets>
+            <PrivateAssets Condition="'$(Configuration)' != 'Debug'">All</PrivateAssets>
+        </PackageReference>
+    </ItemGroup>
+
+    <ItemGroup>
+      <Folder Include="Views\" />
+    </ItemGroup>
+</Project>

Chapplication/MainWindow.axaml

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+<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"
+        mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
+        x:Class="Chapplication.MainWindow"
+        Title="Chapplication">
+        
+        <Grid>
+                <Grid.RowDefinitions>
+                        <RowDefinition Height="*" />
+                        <RowDefinition Height="Auto" />
+                </Grid.RowDefinitions>
+                <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="*" />
+                        <ColumnDefinition Width="Auto" />
+                </Grid.ColumnDefinitions>
+
+                <ListBox 
+                        x:Name="ChatBox"
+                        Grid.Row="0"
+                        Grid.ColumnSpan="2"
+                        HorizontalAlignment="Stretch"
+                        VerticalAlignment="Stretch"
+                        Margin="10" />
+
+                <TextBox 
+                        x:Name="ChatInputBox" 
+                        Grid.Row="1"
+                        Grid.Column="0"
+                        Height="30"
+                        HorizontalAlignment="Stretch"
+                        VerticalAlignment="Top"
+                        Margin="10,0,5,10"
+                        TextWrapping="Wrap" 
+                        KeyDown="ChatInputBox_OnKeyDown"/>
+
+                <Button 
+                        x:Name="SendButton"
+                        Grid.Row="1"
+                        Grid.Column="1"
+                        Content="Send"
+                        Width="80"
+                        Height="30"
+                        HorizontalAlignment="Right"
+                        VerticalAlignment="Top"
+                        Margin="5,0,10,10"
+                        Click="SubmitButton_OnClick"/>
+        </Grid>
+        
+
+        
+</Window>

Chapplication/MainWindow.axaml.cs

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+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using Avalonia.Controls;
+using Avalonia.Controls.Primitives;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+using Chapplication.Models;
+
+namespace Chapplication;
+
+public partial class MainWindow : Window
+{
+    
+    private ObservableCollection<string> _messages = new();
+    
+    public MainWindow()
+    {
+        InitializeComponent();
+
+        ChatBox.ItemsSource = _messages;
+    }
+
+    private void SubmitButton_OnClick(object? sender, RoutedEventArgs e)
+    {
+        SendMessage();
+    }
+
+    private void ChatInputBox_OnKeyDown(object? sender, KeyEventArgs e)
+    {
+        if (e.Key == Key.Enter)
+        {
+            SendMessage();
+        }
+    }
+    
+    private void SendMessage()
+    {
+        if (string.IsNullOrWhiteSpace(ChatInputBox.Text))
+        {
+            return;
+        }
+        
+        // _messages.Add(ChatInputBox.Text);
+        // ChatInputBox.Text = string.Empty;
+        // ChatInputBox.Focus();
+        
+        
+    }
+}

Chapplication/Models/Conversation.cs

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+namespace Chapplication.Models;
+
+public class Conversation
+{
+    
+}

Chapplication/Models/Friend.cs

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+namespace Chapplication.Models;
+
+public class Friend
+{
+    
+}

Chapplication/Models/Message.cs

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+namespace Chapplication.Models;
+
+public class Message
+{
+    
+}

Chapplication/Models/User.cs

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+namespace Chapplication.Models;
+
+public class User
+{
+    
+}

Chapplication/Program.cs

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+using Avalonia;
+using System;
+
+namespace Chapplication;
+
+class Program
+{
+    // Initialization code. Don't use any Avalonia, third-party APIs or any
+    // SynchronizationContext-reliant code before AppMain is called: things aren't initialized
+    // yet and stuff might break.
+    [STAThread]
+    public static void Main(string[] args) => BuildAvaloniaApp()
+        .StartWithClassicDesktopLifetime(args);
+
+    // Avalonia configuration, don't remove; also used by visual designer.
+    public static AppBuilder BuildAvaloniaApp()
+        => AppBuilder.Configure<App>()
+            .UsePlatformDetect()
+            .WithInterFont()
+            .LogToTrace();
+}

Chapplication/app.manifest

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+<?xml version="1.0" encoding="utf-8"?>
+<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
+  <!-- This manifest is used on Windows only.
+       Don't remove it as it might cause problems with window transparency and embedded controls.
+       For more details visit https://learn.microsoft.com/en-us/windows/win32/sbscs/application-manifests -->
+  <assemblyIdentity version="1.0.0.0" name="Chapplication.Desktop"/>
+
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <!-- A list of the Windows versions that this application has been tested on
+           and is designed to work with. Uncomment the appropriate elements
+           and Windows will automatically select the most compatible environment. -->
+
+      <!-- Windows 10 -->
+      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
+    </application>
+  </compatibility>
+</assembly>