Shrlalgo.RvKits/WPFDark/Controls/BiaComboBox.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:wpf="clr-namespace:WPFDark"
                    xmlns:controls="clr-namespace:WPFDark.Controls">
    <Style TargetType="{x:Type controls:BiaComboBox}">
        <Setter Property="Background" Value="{DynamicResource TextBoxBackgroundBrushKey}" />
        <Setter Property="BorderColor" Value="{DynamicResource TextBoxBorderColorKey}" />
        <Setter Property="Foreground" Value="{DynamicResource TextBoxForegroundBrushKey}" />
        <Setter Property="Height" Value="{x:Static wpf:Boxes.BasicOneLineHeight}" />
        <Setter Property="CornerRadius" Value="{x:Static wpf:Boxes.BasicCornerRadiusPrim}" />
        <Setter Property="Focusable" Value="True" />
        <Setter Property="MarkBrush" Value="{DynamicResource InactiveForegroundBrushKey}" />
        <Setter Property="Validation.ErrorTemplate" Value="{x:Null}" />

        <Style.Triggers>
            <Trigger Property="IsMouseOver" Value="True">
                <Setter Property="Background" Value="{DynamicResource ActiveBackgroundBrushKey}" />
            </Trigger>

            <Trigger Property="IsEnabled" Value="False">
                <Setter Property="Background" Value="{DynamicResource InactiveBackgroundBrushKey}" />
                <Setter Property="Foreground" Value="{DynamicResource InactiveForegroundBrushKey}" />
            </Trigger>

            <Trigger Property="IsMouseOver" Value="True">
                <Setter Property="MarkBrush" Value="{DynamicResource AccentBrushKey}" />
            </Trigger>

            <Trigger Property="IsOpen" Value="True">
                <Setter Property="MarkBrush" Value="{DynamicResource AccentForegroundBrushKey}" />
                <Setter Property="Background" Value="{DynamicResource ActiveBackgroundBrushKey}" />
            </Trigger>
        </Style.Triggers>

        <Style.Resources>
            <Style TargetType="{x:Type ListBox}">
                <Setter Property="Background" Value="{DynamicResource PanelBackgroundBrushKey}" />
                <Setter Property="BorderBrush" Value="{DynamicResource TextBoxBorderBrushKey}" />
                <Setter Property="BorderThickness" Value="1" />
                <Setter Property="Foreground" Value="{DynamicResource TextBoxForegroundBrushKey}" />
                <Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto" />
                <Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto" />
                <Setter Property="ScrollViewer.CanContentScroll" Value="True" />
                <Setter Property="ScrollViewer.PanningMode" Value="Both" />
                <Setter Property="Stylus.IsFlicksEnabled" Value="False" />
                <Setter Property="VerticalContentAlignment" Value="Center" />

                <Setter Property="VirtualizingPanel.IsVirtualizing" Value="True" />
                <Setter Property="VirtualizingPanel.VirtualizationMode" Value="Recycling" />

                <Setter Property="ItemsPanel">
                    <Setter.Value>
                        <ItemsPanelTemplate>
                            <VirtualizingStackPanel CanVerticallyScroll="True" Orientation="Vertical" />
                        </ItemsPanelTemplate>
                    </Setter.Value>
                </Setter>

                <Setter Property="ItemContainerStyle">
                    <Setter.Value>
                        <Style TargetType="{x:Type ListBoxItem}">
                            <Setter Property="SnapsToDevicePixels" Value="True" />
                            <Setter Property="OverridesDefaultStyle" Value="True" />
                            <Setter Property="Background" Value="Transparent" />
                            <Setter Property="FocusVisualStyle" Value="{x:Null}" />
                            <Setter Property="HorizontalAlignment" Value="Stretch" />
                            <Setter Property="VerticalAlignment" Value="Stretch" />
                            <Setter Property="HorizontalContentAlignment" Value="Stretch" />
                            <Setter Property="VerticalContentAlignment" Value="Stretch" />

                            <Setter Property="Template">
                                <Setter.Value>
                                    <ControlTemplate TargetType="{x:Type ListBoxItem}">
                                        <Border Padding="1"
                                                Background="{TemplateBinding Background}"
                                                SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}">
                                            <ContentPresenter Margin="4,0,0,0" />
                                        </Border>

                                        <ControlTemplate.Triggers>
                                            <Trigger Property="IsMouseOver" Value="True">
                                                <Setter Property="Background" Value="{DynamicResource SubmenuItemBackgroundHighlighted}" />
                                            </Trigger>

                                            <MultiTrigger>
                                                <MultiTrigger.Conditions>
                                                    <Condition Property="IsSelected" Value="True" />
                                                </MultiTrigger.Conditions>
                                                <Setter Property="Background" Value="{DynamicResource Item.SelectedActive.Background}" />
                                                <Setter Property="BorderBrush" Value="{DynamicResource Item.SelectedActive.Border}" />
                                            </MultiTrigger>

                                            <MultiTrigger>
                                                <MultiTrigger.Conditions>
                                                    <Condition Property="IsSelected" Value="True" />
                                                    <Condition Property="IsMouseOver" Value="True" />
                                                </MultiTrigger.Conditions>
                                                <Setter Property="Background" Value="{DynamicResource Item.SelectedActive.Background.IsMouseOver}" />
                                                <Setter Property="BorderBrush" Value="{DynamicResource Item.SelectedActive.Border.IsMouseOver}" />
                                            </MultiTrigger>
                                        </ControlTemplate.Triggers>
                                    </ControlTemplate>
                                </Setter.Value>
                            </Setter>

                            <Style.Triggers>
                                <Trigger Property="IsMouseOver" Value="True">
                                    <Setter Property="IsSelected" Value="True" />
                                </Trigger>
                            </Style.Triggers>
                        </Style>
                    </Setter.Value>
                </Setter>

                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="{x:Type ListBox}">
                            <controls:BiaClippingBorder MaxHeight="414"
                                                        Background="{DynamicResource SubmenuItemBackground}"
                                                        BorderBrush="{DynamicResource MenuItemHighlightedBackground}"
                                                        BorderThickness="1"
                                                        CornerRadius="{x:Static wpf:Boxes.BasicCornerRadius}">
                                <ScrollViewer Padding="{TemplateBinding Padding}" Focusable="False">
                                    <ItemsPresenter />
                                </ScrollViewer>
                            </controls:BiaClippingBorder>

                            <ControlTemplate.Triggers>
                                <MultiTrigger>
                                    <MultiTrigger.Conditions>
                                        <Condition Property="IsGrouping" Value="True" />
                                        <Condition Property="VirtualizingPanel.IsVirtualizingWhenGrouping" Value="False" />
                                    </MultiTrigger.Conditions>
                                    <Setter Property="ScrollViewer.CanContentScroll" Value="False" />
                                </MultiTrigger>
                            </ControlTemplate.Triggers>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>

                <Style.Triggers>
                    <Trigger Property="IsEnabled" Value="False">
                        <Setter Property="Background" Value="{DynamicResource InactiveBackgroundBrushKey}" />
                        <Setter Property="BorderBrush" Value="{DynamicResource InactiveBorderBrushKey}" />
                        <Setter Property="Foreground" Value="{DynamicResource InactiveForegroundBrushKey}" />
                    </Trigger>

                    <Trigger Property="HasItems" Value="False">
                        <Setter Property="MinHeight" Value="100" />
                    </Trigger>
                </Style.Triggers>
            </Style>
        </Style.Resources>
    </Style>
</ResourceDictionary>