A Toy Tabbed File Explorer for Prototype and MVVM Exercise

<UserControl
  x:Class="WpfApplication1.View.NavTreeView"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
  xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  d:DesignHeight="300"
  d:DesignWidth="300"
  xmlns:vw="clr-namespace:WpfApplication1.View"
  xmlns:vm="clr-namespace:WpfApplication1.ViewModel"
  mc:Ignorable="d"
  x:Name="CurrentNavTreeViewName">
  
  <UserControl.Resources>
    
    <HierarchicalDataTemplate x:Key="NavTreeTempl" ItemsSource="{Binding Path=Children}" >

      <!-- Transparant button + command+parameter set SelectedPath EACH time item is clicked -->

      <!-- Note: Normally I use very basic bindings -->
      <!-- Note: Now commmand in ViewModel, earlier in NavTreeVm, using bindings:
           "{Binding Path=DataContext.SelectedPathFromTreeCommand, ElementName=CurrentNavTreeViewName}" (+ this User Control given name)
            or ..., RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}}"-->

      <Button 
        ToolTip="{Binding Path=FullPathName, Mode=OneTime}"     
        Command="{Binding Path=DataContext.SelectedPathFromTreeCommand, 
                   RelativeSource = {RelativeSource FindAncestor, AncestorType={x:Type Window}}}"
        CommandParameter="{Binding FullPathName}"
        
        Background="{x:Null}" BorderBrush="{x:Null}" Padding="0" Height="20"
        Focusable="False" ClickMode="Press">       
        
        <!-- Icon + Friendly Name horizontally stacked -->
        <StackPanel Orientation="Horizontal" Margin="0" VerticalAlignment="Stretch" >   
            <Image
              Source="{Binding Path=MyIcon, Mode=OneTime}"
              Stretch="Fill"
              />          
            <TextBlock Margin="5,0,0,0" Text="{Binding FriendlyName,Mode=OneTime}"/>
        </StackPanel>
      </Button>
      
    </HierarchicalDataTemplate>
  </UserControl.Resources>
  
  <!-- older: vw:ExtendedTreeView SelectedItemRead="{Binding SelectedTreeItem, Mode=TwoWay}"--> 
  <TreeView
    BorderThickness="0"
           
    ItemsSource="{Binding Path=RootChildren}"
    ItemTemplate="{StaticResource NavTreeTempl}" >
        
    <TreeView.ItemContainerStyle>
        <Style TargetType="{x:Type TreeViewItem}">
            <Setter Property="IsExpanded" Value="{Binding Path=IsExpanded, Mode=TwoWay}"/>
            <!--<Setter Property="IsSelected" Value="{Binding Path=IsSelected, Mode=TwoWay}"/>-->
            <!--<Setter Property="dd1:DragDropManager.DropTargetAdvisor" Value="{StaticResource FolderPlaneItemsDropAdvisor}"/>-->
        </Style>
    </TreeView.ItemContainerStyle>
  </TreeView>

</UserControl>