WPF TabItem style when mouse left button is down - wpf

Question

I am defining a Style for WPF TabControl TabItem.
I want to show a slight "pushed down" effect on TabItem when mouse (left button) is pressed down and the TabItem is not selected but I cannot find the Trigger for this.
I have tried to define a MultiTrigger with IsMouseLeftButtonDown and IsPressed properties but neither one is recognized.
<Style TargetType="{x:Type TabItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="TabItem">
<Border Name="bd" BorderThickness="1,1,0,0">
<Grid>
<ContentPresenter VerticalAlignment="Center" HorizontalAlignment="Center"
ContentSource="Header"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseLeftButtonDown" Value="True" /> <!--NOT RECOGNIZED-->
<Condition Property="IsSelected" Value="False" />
</MultiTrigger.Conditions>
<Setter TargetName="bd" Property="Background" >
<Setter.Value>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="Green" Offset="0"/>
<GradientStop Color="Yellow" Offset="1"/>
</LinearGradientBrush>
</Setter.Value>
</Setter>
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
How to set a Trigger that gets into action when mouse left button is pressed down on a TabItem ?
EDIT
I tried EventTrigger but I don't see any effect with the below
<EventTrigger RoutedEvent="UIElement.PreviewMouseLeftButtonDown">
<BeginStoryboard>
<Storyboard>
<ColorAnimation Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)" To="Green" Duration="0:0:3" />
</Storyboard>
<BeginStoryboard/>
<EventTrigger/>
Can it be achieved with this way somehow ?

Answer 1

This example shows you, how to work with EventTriggers.
Note
You might have to set your Highlighting-Logic fully in those Triggers, since values are overridden everytime, the Trigger fires.
<EventTrigger RoutedEvent="PreviewMouseDown" >
<EventTrigger.Actions>
<BeginStoryboard>
<Storyboard >
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="bd" Storyboard.TargetProperty="Background" Duration="0:0:3" BeginTime="0" AutoReverse="True">
<ObjectAnimationUsingKeyFrames.KeyFrames>
<DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{x:Static Brushes.Green}" />
</ObjectAnimationUsingKeyFrames.KeyFrames>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
<EventTrigger RoutedEvent="PreviewMouseUp" >
<EventTrigger.Actions>
<BeginStoryboard>
<Storyboard >
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="bd" Storyboard.TargetProperty="Background" Duration="0:0:3" BeginTime="0" AutoReverse="True">
<ObjectAnimationUsingKeyFrames.KeyFrames>
<DiscreteObjectKeyFrame KeyTime="0:0:0" Value="{x:Static Brushes.Transparent}" />
</ObjectAnimationUsingKeyFrames.KeyFrames>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>