我想实现类似的效果,在Notepad ++中可以看到:将TabContol分为两个TabControl。显然,两个都将单独选择选项卡,但是仍然只有其中一个处于活动状态。
对于那些不了解Notepad ++的人,它是这样的:
为此,我需要在TabControl上引入“ Active”属性(not Focused,因为当TabControls之一失去焦点时,其选定的选项卡仍保持活动状态)。但是,我不知道如何在TabItem的ControlTemplate上制作触发器,这将使我能够区分选择的和选择的+活动选项卡。
这是我当前的TabItem模板的外观:
<Style x:Key="BaseRootTabItem" TargetType="TabItem">
<Style.Setters>
<Setter Property="Background" Value="{StaticResource NormalTabBackgroundBrush}" />
<Setter Property="TextBlock.Foreground" Value="{StaticResource NormalTabForegroundBrush}" />
</Style.Setters>
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Trigger.Setters>
<Setter Property="Background" Value="{StaticResource HoverTabBackgroundBrush}" />
<Setter Property="TextBlock.Foreground" Value="{StaticResource HoverTabForegroundBrush}" />
</Trigger.Setters>
</Trigger>
</Style.Triggers>
</Style>
<Style x:Key="DocumentTabItem" TargetType="TabItem" BasedOn="{StaticResource BaseRootTabItem}">
<Style.Setters>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="TabItem">
<Border x:Name="TabBorder" BorderThickness="1,1,1,0" BorderBrush="Transparent"
Background="{TemplateBinding Background}" TextBlock.Foreground="{TemplateBinding Foreground}">
<ContentPresenter x:Name="ContentSite" HorizontalAlignment="Center" VerticalAlignment="Center" ContentSource="Header" Margin="6,2" />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style.Setters>
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Trigger.Setters>
<Setter Property="Background" Value="{StaticResource SelectedDocumentTabBackgroundBrush}" />
<Setter Property="Foreground" Value="{StaticResource SelectedDocumentTabForegroundBrush}" />
</Trigger.Setters>
</Trigger>
</Style.Triggers>
</Style>
我需要类似的东西:
<Trigger Property="(Owning TabControlEx's Active property)" Value="True">
<Trigger.Setters>
...
</Trigger.Setters>
</Trigger>
或者也许还有其他解决方案?
由于Active
属性不属于TabItem,因此触发器将不起作用。使用DataTrigger绑定到父项:
<DataTrigger Binding="{Binding Active, RelativeSource={RelativeSource AncestorType=TabControlEx}}"
Value="True">
</DataTrigger>