WPF Control Composition (Part 1 of 2)

<UserControl x:Class="SimpleControls.Hyperlink.WebHyperlink"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             mc:Ignorable="d" 
             d:DesignHeight="50" d:DesignWidth="100"
             
             xmlns:hyperlink="clr-namespace:SimpleControls.Hyperlink"
             >
  <UserControl.InputBindings>
    <KeyBinding Key="C" Modifiers="Ctrl" Command="{x:Static hyperlink:WebHyperlink.CopyUri}"
                                         CommandParameter="{Binding ElementName=PART_Hyperlink,Path=NavigateUri}"/>
  </UserControl.InputBindings>
  <Grid ToolTip="{Binding ElementName=PART_Hyperlink,Path=NavigateUri}">
    <TextBlock TextDecorations="{Binding Path=TextDecorations, RelativeSource={RelativeSource FindAncestor, AncestorType=hyperlink:WebHyperlink, AncestorLevel=1}}">
        <Hyperlink Name="PART_Hyperlink"
                   NavigateUri="{Binding Path=NavigateUri, RelativeSource={RelativeSource FindAncestor, AncestorType=hyperlink:WebHyperlink, AncestorLevel=1}}"
                   RequestNavigate="Hyperlink_RequestNavigate"
                   >
          <Hyperlink.ContextMenu>
            <ContextMenu>
              <MenuItem Header="Copy Url to Clipboard"
                        Command="{x:Static hyperlink:WebHyperlink.CopyUri}"
                        CommandParameter="{Binding ElementName=PART_Hyperlink, Path=NavigateUri}"
                        CommandTarget="{Binding PlacementTarget,
                        RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ContextMenu}}}"/>
              <MenuItem Header="Open Target in Browser"
                        Command="{x:Static hyperlink:WebHyperlink.NavigateToUri}"
                        CommandTarget="{Binding PlacementTarget,
                        RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ContextMenu}}}"/>
            </ContextMenu>
          </Hyperlink.ContextMenu>
          <TextBlock Text="{Binding Path=Text, RelativeSource={RelativeSource FindAncestor, AncestorType=hyperlink:WebHyperlink, AncestorLevel=1}}" />
        </Hyperlink>
    </TextBlock>
  </Grid>
</UserControl>