MainWindow.xaml

<Window x:Class="Immutable_Deque_visualization.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:Immutable_Deque_visualization"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008" mc:Ignorable="d" d:DataContext="{d:DesignInstance local:DequeViewModel}"
        Title="MainWindow" Height="350" Width="800">
    <Window.Resources>
        <DataTemplate DataType="{x:Type local:DequeNodeBase}">
            <Border BorderBrush="Black" BorderThickness="1" MinWidth="10">
                <TextBlock Text="{Binding}" Margin="1" HorizontalAlignment="Center" />
            </Border>
        </DataTemplate>
    </Window.Resources>
    <DockPanel>
        <StackPanel DockPanel.Dock="Top" Orientation="Horizontal" HorizontalAlignment="Center">
            <TextBox MinWidth="100" Text="{Binding NewNodeValue}" Margin="{StaticResource margin}" />
            <Button Command="{Binding EnqueueLeftCommand}" Margin="{StaticResource margin}">Enqueue left</Button>
            <Button Command="{Binding EnqueueRightCommand}" Margin="{StaticResource margin}">Enqueue right</Button>
            <Button Command="{Binding DequeueLeftCommand}" Margin="{StaticResource margin}">Dequeue left</Button>
            <Button Command="{Binding DequeueRightCommand}" Margin="{StaticResource margin}">Dequeue right</Button>
        </StackPanel>
        <local:DequeControl Deque="{Binding Deque}" HorizontalAlignment="Center" />
    </DockPanel>
</Window>