Get Tab For Context Menu

[Kevin Marois]

I have a tab control, and I have a header template and style:

    <!--Tab Item Header Template-->
    <DataTemplate x:Key="CustomHeaderTemplate">
        
        <DockPanel LastChildFill="True">

            <TextBlock Text="{Binding FileName}"
                       VerticalAlignment="Center"
                       FontSize="14"/>

            <Button Command="{Binding DataContext.CloseTabCommand, RelativeSource={RelativeSource AncestorType={x:Type Window}}}"
                    CommandParameter="{Binding}"
                    VerticalAlignment="Center"
                    Height="22"
                    Width="22"
                    Background="SteelBlue"
                    Margin="3,0,0,0">
                
                <Path Data="M1,9 L9,1 M1,1 L9,9" 
                      Stroke="White" 
                      StrokeThickness="2" />
                
            </Button>

        </DockPanel>
        
    </DataTemplate>

    <!--Tab Item Style-->
    <Style TargetType="TabItem">

        <Setter Property="ContextMenu">
            <Setter.Value>
                <ContextMenu DataContext="{Binding Path=PlacementTarget.DataContext, RelativeSource={RelativeSource Self}}" >

                    <MenuItem Header="Close Tab" 
                              Command="{Binding Source={StaticResource Proxy}, Path=Data.CloseTabCommand}"
                              CommandParameter="{Binding}"/>

                    <MenuItem Header="Close All Tabs" 
                              Command="{Binding Source={StaticResource Proxy}, Path=Data.CloseAllTabsCommand}"
                              CommandParameter="{Binding}"/>

                    <MenuItem Header="Close All But This" 
                              Command="{Binding Source={StaticResource Proxy}, Path=Data.CloseAllButThisTabCommand}"
                              CommandParameter="{Binding}"/>
                </ContextMenu>
                
            </Setter.Value>
        </Setter>

    </Style>

The problem is that if I right-click a tab that is NOT selected, and choose one of the close options, the SELECTED tab is closed. How can I specify that correct tab item in the command?