Wrap Panel Virtualization

<UserControl x:Class="MediaAssistant.Controls.MovieThumbnails.MovieThumbnailsView"
             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:Converters="clr-namespace:MediaAssistant.Converters" 
             xmlns:Converters1="clr-namespace:MefBasic.Converters;assembly=MefBasic" mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300">
    <UserControl.Resources>
    	<Converters:NotNullToVisibilityConverter x:Key="NotNullToVisibilityConverter" />
    	<Converters1:BoolToVisibilityConverter x:Key="BoolToVisibilityConverter" />
        <Converters:DoneStatusVisibilityConverter x:Key="DoneStatusVisibilityConverter" />
        <Converters:DoneStatusInverseVisibilityConverter x:Key="DoneStatusInverseVisibilityConverter" />
        <Style x:Key="LibraryItemsControlStyle" TargetType="{x:Type ItemsControl}" >
            <Setter Property="ItemTemplate">
                <Setter.Value>
                    <DataTemplate>
                        <Button Content="{Binding Title}" Style="{StaticResource LinkButtonStyle}" Margin="0,0,5,0"  FontSize="10"
                                ToolTip="{Binding Converter={StaticResource LibraryItemSearchTooltipConverter}}"
                                Command="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type UserControl}},Path=DataContext.DataSource.SelectLibraryItemCommand}"
                                CommandParameter="{Binding}"/>
                    </DataTemplate>
                </Setter.Value>
            </Setter>
            <Setter Property="ItemsPanel">
                <Setter.Value>
                    <ItemsPanelTemplate>
                        <WrapPanel/>
                    </ItemsPanelTemplate>
                </Setter.Value>
            </Setter>
        </Style>
        <Converters:NullVisibilityConverter x:Key="NullVisibilityConverter" />
        <DataTemplate x:Key="NormalThumbnail">
            <DockPanel>
                <Border BorderBrush="LightGray" BorderThickness="2" DockPanel.Dock="Left" Width="130" Padding="2" Margin="2">
                    <Grid>
                        <ContentControl Content="{StaticResource MoviePosterImage}" 
                                                    Visibility="{Binding PosterImage, Converter={StaticResource NullVisibilityConverter}}"/>
                        <Image HorizontalAlignment="Center" VerticalAlignment="Center">
                            <Image.Source>
                                <MultiBinding Converter="{StaticResource PosterImageConverter}">
                                    <Binding/>
                                    <Binding Path="Poster"/>
                                    <Binding Path="PosterImage"/>
                                </MultiBinding>
                            </Image.Source>
                        </Image>
                    </Grid>
                </Border>
                
                <Grid Width="170" DockPanel.Dock="Left">
                    <TextBlock Text="Not available" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="15" Foreground="Gray">
                                <TextBlock.Visibility>
                                    <MultiBinding Converter="{StaticResource DoneStatusInverseVisibilityConverter}">
                                       <Binding/>
                                       <Binding Path="Status"/>
                                    </MultiBinding>
                                </TextBlock.Visibility>
                    </TextBlock>
                    <StackPanel Margin="5">
                        <StackPanel.Visibility>
                            <MultiBinding Converter="{StaticResource DoneStatusVisibilityConverter}">
                                <Binding/>
                                <Binding Path="Status"/>
                                <Binding RelativeSource="{RelativeSource Mode=FindAncestor,AncestorType={x:Type UserControl}}" Path="DataContext.DataSource"/>
                            </MultiBinding>
                        </StackPanel.Visibility>
                        <StackPanel Orientation="Horizontal">
                            <TextBlock Text="{Binding Title}" FontSize="13" FontWeight="Bold" Margin="0,5,0,0" Width="160" TextTrimming="CharacterEllipsis" ToolTip="{Binding Title}"/>
                        </StackPanel>
                        <Border HorizontalAlignment="Left" Margin="0,2,0,5">
                            <StackPanel HorizontalAlignment="Right" Orientation="Horizontal">
                                <ContentControl Width="12" Height="12" ToolTip="Available movie at local repository"
                                        Visibility="{Binding FullPath, Converter={StaticResource NotNullToVisibilityConverter}}"
                                        Content="{StaticResource MovieFolderImage}"/>
                                <ContentControl Width="12" Height="12" ToolTip="Wish list movie"
                                        Visibility="{Binding IsStarred, Converter={StaticResource BoolToVisibilityConverter}}"
                                        Content="{StaticResource StarImage}"/>
                                <ContentControl Width="12" Height="12" ToolTip="Wish list movie"  Margin="2,0"
                                        Visibility="{Binding IsInWishList, Converter={StaticResource BoolToVisibilityConverter}}"
                                        Content="{StaticResource WishListImage}"/>
                                <ContentControl Width="12" Height="12" ToolTip="Watched movie"
                                        Visibility="{Binding Watched, Converter={StaticResource BoolToVisibilityConverter}}"
                                        Content="{StaticResource WatchListImage}"/>
                            </StackPanel>
                        </Border>
                        <ItemsControl ItemsSource="{Binding Genres}" Style="{StaticResource LibraryItemsControlStyle}" Margin="0,2,0,2"/>
                        <Border Margin="0,2" BorderThickness="1" BorderBrush="LightGray"/>
                        <StackPanel Orientation="Horizontal">
                            <TextBlock Text="{Binding Rating, StringFormat='Rating: {0}/10'}" FontSize="12"/>
                            <TextBlock Text="{Binding Votes, StringFormat='Votes: {0}'}" Margin="5,0,0,0"  FontSize="12"/>
                        </StackPanel>
                        
                        <StackPanel Margin="0,2">
                            <TextBlock Text="Director:" Margin="0,0,2,0" FontSize="10"/>
                            <ItemsControl ItemsSource="{Binding Directors}" Style="{StaticResource LibraryItemsControlStyle}"/>
                        </StackPanel>
                        <StackPanel Margin="0,2">
                            <TextBlock Text="Stars:" Margin="0,0,2,0" FontSize="10"/>
                            <ItemsControl ItemsSource="{Binding Stars}" Style="{StaticResource LibraryItemsControlStyle}"/>
                        </StackPanel>
                    </StackPanel>
                </Grid>
            </DockPanel>
        </DataTemplate>
        <DataTemplate  x:Key="NormalThumbnailTemplate">
            <Border Width="300" Height="200" BorderThickness="1" Margin="5" BorderBrush="Gray">
                <ContentControl x:Name="content" Content="{Binding}" ContentTemplate="{x:Null}"/>
            </Border>
            <DataTemplate.Triggers>
                <DataTrigger Binding="{Binding IsVisible}" Value="True">
                    <Setter TargetName="content" Value="{StaticResource NormalThumbnail}" Property="ContentTemplate"/>
                </DataTrigger>
            </DataTemplate.Triggers>
        </DataTemplate>
    </UserControl.Resources>
    <Grid>
        
        <ListBox x:Name="thumbnailListBox" ItemsSource="{Binding DataSource.ResultMovies}" 
                 ScrollViewer.HorizontalScrollBarVisibility="Disabled"
                 SelectedItem="{Binding DataSource.SelectedMovie}"
                 VirtualizingStackPanel.IsVirtualizing="True"
                 VirtualizingStackPanel.VirtualizationMode="Recycling"
                 ScrollViewer.IsDeferredScrollingEnabled="True"
                 ItemTemplate="{StaticResource NormalThumbnailTemplate}"
                 ScrollViewer.ScrollChanged="HandleScrollChanged"
                 >
            <ListBox.ContextMenu>
                <ContextMenu>
                    <MenuItem Header="Play" Command="{Binding DataSource.PlayMovieCommand}"/>
                    <Separator/>
                    <MenuItem Header="Show in Windows Explorer" Command="{Binding DataSource.ShowMovieInWindowsExplorerCommand}"/>
                </ContextMenu>
            </ListBox.ContextMenu>
            
            <ListBox.ItemsPanel>
                <ItemsPanelTemplate>
                    <WrapPanel/>
                </ItemsPanelTemplate>
            </ListBox.ItemsPanel>
        </ListBox>
    </Grid>
</UserControl>