EpubReader/Source/VersOne.Epub.WpfDemo/Controls/NavigationTreeView.xaml

<TreeView x:Class="VersOne.Epub.WpfDemo.Controls.NavigationTreeView"
          xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
          xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
          ScrollViewer.HorizontalScrollBarVisibility="Disabled"
          BorderThickness="0">
    <TreeView.Resources>
        <Style TargetType="TreeViewItem" BasedOn="{StaticResource {x:Type TreeViewItem}}">
            <Setter Property="HorizontalContentAlignment" Value="Stretch" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="TreeViewItem">
                        <StackPanel>
                            <Grid>
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition Width="Auto" MinWidth="19" />
                                    <ColumnDefinition Width="*" />
                                </Grid.ColumnDefinitions>
                                <Grid.RowDefinitions>
                                    <RowDefinition Height="Auto" />
                                    <RowDefinition />
                                </Grid.RowDefinitions>
                                <ToggleButton IsChecked="{Binding Path=IsExpanded, RelativeSource={RelativeSource TemplatedParent}}" ClickMode="Press" Name="Expander">
                                    <ToggleButton.Style>
                                        <Style TargetType="ToggleButton">
                                            <Setter Property="UIElement.Focusable" Value="false" />
                                            <Setter Property="FrameworkElement.Width" Value="16" />
                                            <Setter Property="FrameworkElement.Height" Value="16" />
                                            <Setter Property="Control.Template">
                                                <Setter.Value>
                                                    <ControlTemplate TargetType="ToggleButton">
                                                        <Border Padding="5,5,5,5" Background="#00FFFFFF" Width="16" Height="16">
                                                            <Path Fill="#00FFFFFF" Stroke="#FF989898" Name="ExpandPath">
                                                                <Path.Data>
                                                                    <PathGeometry Figures="M0,0L0,6L6,0z" />
                                                                </Path.Data>
                                                                <Path.RenderTransform>
                                                                    <RotateTransform Angle="135" CenterX="3" CenterY="3" />
                                                                </Path.RenderTransform>
                                                            </Path>
                                                        </Border>
                                                        <ControlTemplate.Triggers>
                                                            <Trigger Property="UIElement.IsMouseOver" Value="True">
                                                                <Setter TargetName="ExpandPath" Property="Shape.Stroke" Value="#FF1BBBFA" />
                                                                <Setter TargetName="ExpandPath" Property="Shape.Fill" Value="#00FFFFFF" />
                                                            </Trigger>
                                                            <Trigger Property="ToggleButton.IsChecked" Value="True">
                                                                <Setter TargetName="ExpandPath" Property="UIElement.RenderTransform">
                                                                    <Setter.Value>
                                                                        <RotateTransform Angle="180" CenterX="3" CenterY="3" />
                                                                    </Setter.Value>
                                                                </Setter>
                                                                <Setter TargetName="ExpandPath" Property="Shape.Fill" Value="#FF595959" />
                                                                <Setter TargetName="ExpandPath" Property="Shape.Stroke" Value="#FF262626" />
                                                            </Trigger>
                                                        </ControlTemplate.Triggers>
                                                    </ControlTemplate>
                                                </Setter.Value>
                                            </Setter>
                                        </Style>
                                    </ToggleButton.Style>
                                </ToggleButton>
                                <Border x:Name="Bd" HorizontalAlignment="Stretch" BorderThickness="{TemplateBinding Border.BorderThickness}"
                                        BorderBrush="{TemplateBinding Border.BorderBrush}" Padding="{TemplateBinding Control.Padding}"
                                        Background="{TemplateBinding Panel.Background}" SnapsToDevicePixels="True" Grid.Column="1">
                                    <ContentPresenter x:Name="PART_Header" Content="{TemplateBinding HeaderedContentControl.Header}"
                                                      ContentTemplate="{TemplateBinding HeaderedContentControl.HeaderTemplate}"
                                                      ContentStringFormat="{TemplateBinding HeaderedItemsControl.HeaderStringFormat}"
                                                      ContentTemplateSelector="{TemplateBinding HeaderedItemsControl.HeaderTemplateSelector}"
                                                      ContentSource="Header" HorizontalAlignment="{TemplateBinding Control.HorizontalContentAlignment}"
                                                      SnapsToDevicePixels="{TemplateBinding UIElement.SnapsToDevicePixels}" />
                                </Border>
                                <ItemsPresenter x:Name="ItemsHost" Grid.Column="1" Grid.Row="1" />
                            </Grid>
                        </StackPanel>
                        <ControlTemplate.Triggers>
                            <Trigger Property="TreeViewItem.IsExpanded" Value="False">
                                <Setter TargetName="ItemsHost" Property="UIElement.Visibility" Value="Collapsed" />
                            </Trigger>
                            <Trigger Property="ItemsControl.HasItems" Value="False">
                                <Setter TargetName="Expander" Property="UIElement.Visibility" Value="Hidden" />
                            </Trigger>
                            <Trigger Property="UIElement.IsEnabled" Value="False">
                                <Setter Property="TextElement.Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}" />
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </TreeView.Resources>
</TreeView>