sourcegit/src/Views/BranchTree.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:c="using:SourceGit.Converters"
             xmlns:v="using:SourceGit.Views"
             xmlns:vm="using:SourceGit.ViewModels"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="SourceGit.Views.BranchTree"
             x:Name="ThisControl">
  <ListBox x:Name="BranchesPresenter"
           Classes="repo_left_content_list"
           ItemsSource="{Binding #ThisControl.Rows}"
           SelectionMode="Multiple"
           SelectionChanged="OnNodesSelectionChanged"
           ContextRequested="OnTreeContextRequested">
    <ListBox.ItemsPanel>
      <ItemsPanelTemplate>
        <VirtualizingStackPanel Orientation="Vertical"/>
      </ItemsPanelTemplate>
    </ListBox.ItemsPanel>

    <ListBox.Styles>
      <Style Selector="ListBoxItem" x:DataType="vm:BranchTreeNode">
        <Setter Property="CornerRadius" Value="{Binding CornerRadius}"/>
      </Style>

      <Style Selector="ListBoxItem:pointerover v|FilterModeSwitchButton">
        <Setter Property="IsNoneVisible" Value="True"/>
      </Style>
    </ListBox.Styles>

    <ListBox.ItemTemplate>
      <DataTemplate DataType="vm:BranchTreeNode">
        <Grid Height="24"
              Margin="{Binding Depth, Converter={x:Static c:IntConverters.ToTreeMargin}}"
              ColumnDefinitions="16,*"
              ToolTip.Tip="{Binding Tooltip}">

          <!-- Tree Expander -->
          <v:BranchTreeNodeToggleButton Grid.Column="0"
                                        Classes="tree_expander"
                                        Focusable="False"
                                        HorizontalAlignment="Center"
                                        IsChecked="{Binding IsExpanded, Mode=OneWay}"
                                        IsVisible="{Binding !IsBranch}"/>

          <!-- Content Area (allows double-click) -->
          <Grid Grid.Column="1"
                Background="Transparent"
                ColumnDefinitions="18,*,Auto,Auto"
                DoubleTapped="OnDoubleTappedBranchNode">

            <!-- Icon -->
            <v:BranchTreeNodeIcon Grid.Column="0"
                                  Node="{Binding}"
                                  IsExpanded="{Binding IsExpanded}"/>

            <!-- Name -->
            <TextBlock Grid.Column="1"
                       Text="{Binding Name}"
                       Classes="primary"
                       FontWeight="{Binding NameFontWeight}"
                       TextTrimming="CharacterEllipsis"/>

            <!-- Tracking status -->
            <v:BranchTreeNodeTrackStatusPresenter Grid.Column="2"
                                                  VerticalAlignment="Center"
                                                  FontFamily="{DynamicResource Fonts.Monospace}"
                                                  FontSize="10"
                                                  Foreground="{DynamicResource Brush.BadgeFG}"
                                                  Background="{DynamicResource Brush.Badge}"/>

            <!-- Filter Mode Switcher -->
            <v:FilterModeSwitchButton Grid.Column="3"
                                      Margin="0,0,8,0"
                                      Mode="{Binding FilterMode}"/>
          </Grid>
        </Grid>
      </DataTemplate>
    </ListBox.ItemTemplate>
  </ListBox>
</UserControl>