sourcegit/src/Views/RevisionFiles.axaml

<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"
             xmlns:ae="using:AvaloniaEdit"
             xmlns:m="using:SourceGit.Models"
             xmlns:vm="using:SourceGit.ViewModels"
             xmlns:v="using:SourceGit.Views"
             xmlns:c="using:SourceGit.Converters"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="SourceGit.Views.RevisionFiles"
             x:DataType="vm:CommitDetail">
  <Grid>
    <Grid.ColumnDefinitions>
      <ColumnDefinition Width="256" MinWidth="200" MaxWidth="480"/>
      <ColumnDefinition Width="1"/>
      <ColumnDefinition Width="*"/>
    </Grid.ColumnDefinitions>

    <Grid Grid.Column="0" RowDefinitions="26,*">
      <!-- Search -->
      <Grid Grid.Row="0" ColumnDefinitions="24,*,24">
        <Border Grid.Column="0" Grid.ColumnSpan="3"
                Background="Transparent"
                BorderBrush="{DynamicResource Brush.Border2}"
                BorderThickness="1"/>
        <Path Grid.Column="0"
              Width="14" Height="14"
              Fill="{DynamicResource Brush.FG2}"
              Data="{StaticResource Icons.Search}"/>
        <TextBox Grid.Column="1"
                 Classes="no_background no_border"
                 FontSize="12"
                 Height="24"
                 CornerRadius="0"
                 Watermark="{DynamicResource Text.CommitDetail.Changes.Search}"
                 Text="{Binding SearchFileFilter, Mode=TwoWay}"/>
        <Button Grid.Column="2"
                Classes="icon_button"
                IsVisible="{Binding SearchFileFilter, Converter={x:Static StringConverters.IsNotNullOrEmpty}}"
                Command="{Binding ClearSearchFileFilter}">
          <Path Width="14" Height="14" Fill="{DynamicResource Brush.FG2}" Data="{StaticResource Icons.Clear}"/>
        </Button>
      </Grid>

      <!-- File Tree -->
      <Border Grid.Row="1" Margin="0,4,0,0" BorderBrush="{DynamicResource Brush.Border2}" BorderThickness="1" Background="{DynamicResource Brush.Contents}">
        <TreeView Grid.Row="5"
                  ItemsSource="{Binding RevisionFilesTree}"
                  SelectedItem="{Binding SelectedRevisionFileNode, Mode=TwoWay}"
                  AutoScrollToSelectedItem="True"
                  ScrollViewer.HorizontalScrollBarVisibility="Auto"
                  ScrollViewer.VerticalScrollBarVisibility="Auto"
                  ContextRequested="OnTreeViewContextRequested">
          <TreeView.Styles>
            <Style Selector="TreeViewItem" x:DataType="vm:FileTreeNode">
              <Setter Property="IsExpanded" Value="{Binding IsExpanded, Mode=TwoWay}"/>
            </Style>
          </TreeView.Styles>

          <TreeView.ItemTemplate>
            <TreeDataTemplate ItemsSource="{Binding Children}" x:DataType="{x:Type vm:FileTreeNode}">
              <Grid Height="24" ColumnDefinitions="Auto,*">
                <Path Grid.Column="0" Classes="folder_icon" Width="14" Height="14" Margin="0,2,0,0" IsVisible="{Binding IsFolder}" Fill="Goldenrod" VerticalAlignment="Center"/>
                <Path Grid.Column="0" Width="14" Height="14" IsVisible="{Binding !IsFolder}" Data="{StaticResource Icons.File}" VerticalAlignment="Center"/>
                <TextBlock Grid.Column="1" Classes="monospace" Text="{Binding FullPath, Converter={x:Static c:PathConverters.PureFileName}}" FontSize="12" Margin="6,0,0,0"/>
              </Grid>
            </TreeDataTemplate>
          </TreeView.ItemTemplate>
        </TreeView>
      </Border>
    </Grid>

    <GridSplitter Grid.Column="1"
                  Width="1" MinWidth=".5"
                  HorizontalAlignment="Center" VerticalAlignment="Stretch"
                  Background="Transparent"/>

    <!-- File Content Viewer -->
    <Grid Grid.Column="2" Margin="4,0,0,0">
      <Border BorderThickness="1" BorderBrush="{DynamicResource Brush.Border2}">
        <ContentControl Content="{Binding ViewRevisionFileContent}">
          <ContentControl.DataTemplates>
            <DataTemplate DataType="m:RevisionBinaryFile">
              <StackPanel Orientation="Vertical" HorizontalAlignment="Center" VerticalAlignment="Center">
                <Path Width="64" Height="64" Data="{StaticResource Icons.Error}" Fill="{DynamicResource Brush.FG2}"/>
                <TextBlock Margin="0,16,0,0" Text="{DynamicResource Text.BinaryNotSupported}" FontSize="18" FontWeight="Bold" HorizontalAlignment="Center" Foreground="{DynamicResource Brush.FG2}"/>
              </StackPanel>
            </DataTemplate>

            <DataTemplate DataType="m:RevisionTextFile">
              <v:RevisionTextFileView FontFamily="fonts:SourceGit#JetBrains Mono" FontSize="12" Background="{DynamicResource Brush.Contents}"/>
            </DataTemplate>

            <DataTemplate DataType="m:RevisionLFSObject">
              <StackPanel Orientation="Vertical" HorizontalAlignment="Center" VerticalAlignment="Center">
                <TextBlock Text="{DynamicResource Text.CommitDetail.Files.LFS}" FontSize="18" FontWeight="Bold" HorizontalAlignment="Center" Foreground="{DynamicResource Brush.FG2}"/>
                <Path Width="64" Height="64" Margin="0,24,0,0" Data="{StaticResource Icons.LFS}" Fill="{DynamicResource Brush.FG2}"/>
                <SelectableTextBlock Margin="0,16,0,0" Text="{Binding Object.Oid}" HorizontalAlignment="Center" Foreground="{DynamicResource Brush.FG2}"/>
                <StackPanel Margin="0,8,0,0" Orientation="Horizontal" HorizontalAlignment="Center">
                  <TextBlock Classes="monospace" Text="{Binding Object.Size}" Foreground="{DynamicResource Brush.FG2}"/>
                  <TextBlock Text="{DynamicResource Text.Bytes}" Margin="8,0,0,0" Foreground="{DynamicResource Brush.FG2}"/>
                </StackPanel>
              </StackPanel>
            </DataTemplate>

            <DataTemplate DataType="m:RevisionSubmodule">
              <StackPanel Orientation="Vertical" HorizontalAlignment="Center" VerticalAlignment="Center">
                <TextBlock Text="{DynamicResource Text.CommitDetail.Files.Submodule}" FontSize="18" FontWeight="Bold" HorizontalAlignment="Center" Foreground="{DynamicResource Brush.FG2}"/>
                <Path Width="64" Height="64" Margin="0,16,0,0" Data="{StaticResource Icons.Submodule}" Fill="{DynamicResource Brush.FG2}"/>
                <SelectableTextBlock Margin="0,16,0,0" Text="{Binding SHA}" HorizontalAlignment="Center" Foreground="{DynamicResource Brush.FG2}"/>
              </StackPanel>
            </DataTemplate>
          </ContentControl.DataTemplates>
        </ContentControl>
      </Border>
    </Grid>
  </Grid>
</UserControl>