patcher/Patcher/PatchGenerator/CustomControls/FolderSelector.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"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="PatchGenerator.CustomControls.FolderSelector"
             DragDrop.AllowDrop="True"
             Background="Transparent"
             >
  <UserControl.Styles>
    <Style Selector="Border">
      <Setter Property="BorderBrush" Value="{StaticResource AKI_Background_Dark}"/>
      <Setter Property="BorderThickness" Value="2"/>
    </Style>

    <Style Selector="Border.folderSelected">
      <Setter Property="BorderBrush" Value="{StaticResource AKI_Brush_Yellow}"/>
    </Style>
    
    <Style Selector="TextBlock.folderSelected">
      <Setter Property="Foreground" Value="{StaticResource AKI_Brush_Yellow}"/>
    </Style>
  </UserControl.Styles>

  <Border Classes.folderSelected="{Binding FolderSelected, RelativeSource={
                                   RelativeSource AncestorType=UserControl}}">
    
    <TextBlock Text="{Binding FolderPath, RelativeSource={
                      RelativeSource AncestorType=UserControl}}"
               HorizontalAlignment="Center"
               VerticalAlignment="Center"
               Classes.folderSelected="{Binding FolderSelected, RelativeSource={
                                        RelativeSource AncestorType=UserControl}}"
               TextWrapping="Wrap"
               />
  </Border>
  
</UserControl>