DocumentView.xaml

<UserControl x:Class="DocumentManagerSerialization.Views.DocumentView"
    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"
    xmlns:dx="http://schemas.devexpress.com/winfx/2008/xaml/core"
    xmlns:dxb="http://schemas.devexpress.com/winfx/2008/xaml/bars"
    xmlns:dxe="http://schemas.devexpress.com/winfx/2008/xaml/editors"
    xmlns:dxg="http://schemas.devexpress.com/winfx/2008/xaml/grid"
    xmlns:dxmvvm="http://schemas.devexpress.com/winfx/2008/xaml/mvvm" 
    xmlns:ViewModels="clr-namespace:DocumentManagerSerialization.ViewModels"
    mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="300"
    DataContext="{dxmvvm:ViewModelSource Type=ViewModels:DocumentViewModel}">
    <DockPanel>
        <dxb:ToolBarControl DockPanel.Dock="Top">
            <dxb:ToolBarControl.Items>
                <dxb:BarButtonItem Content="New Sub Document" BarItemDisplayMode="ContentAndGlyph" Glyph="{dx:DXImage Image=New_16x16.png}" Command="{Binding OpenChildDocumentCommand}"/>
                <dxb:BarEditItem Content="Document state: " EditValue="{Binding State.State, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged }">
                    <dxb:BarEditItem.EditSettings>
                        <dxe:TextEditSettings/>
                    </dxb:BarEditItem.EditSettings>
                </dxb:BarEditItem>
                <dxb:BarEditItem Content="Can be Closed" EditValue="{Binding CanBeClosed, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged }">
                    <dxb:BarEditItem.EditSettings>
                        <dxe:CheckEditSettings/>
                    </dxb:BarEditItem.EditSettings>
                </dxb:BarEditItem>
            </dxb:ToolBarControl.Items>
        </dxb:ToolBarControl>
        <dxb:StatusBarControl DockPanel.Dock="Bottom">
            <dxb:StatusBarControl.Items>
                <dxb:BarStaticItem Content="{Binding ParentViewModel.State.State}">
                    <dxb:BarStaticItem.ContentTemplate>
                        <DataTemplate>
                            <StackPanel Orientation="Horizontal">
                                <TextBlock Text="Parent's state: "/>
                                <TextBlock Text="{Binding}"/>
                            </StackPanel>
                        </DataTemplate>
                    </dxb:BarStaticItem.ContentTemplate>
                </dxb:BarStaticItem>
            </dxb:StatusBarControl.Items>
        </dxb:StatusBarControl>
        <Border>
            <TextBlock Text="Document" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="32"/>
        </Border>        
    </DockPanel>
</UserControl>