IsSplit is now automatically set by a style trigger

Author: batzen

Changelog.md

@@ -71,6 +71,7 @@
   - Improved mouse wheel selection on `RibbonTabControl`
   - `MenuItem`
     - Added support for `UsesItemContainerTemplate` and `ItemContainerTemplateSelector`
+    - `IsSplit` is now automatically set by a style trigger. If `Command` is not null and `HasItems` is true.
   - `DropDownButton`
     - Added support for `UsesItemContainerTemplate` and `ItemContainerTemplateSelector`
 

Fluent.Ribbon.Showcase/TestContent.xaml

@@ -558,7 +558,6 @@
                         <Separator />
                         <Fluent:MenuItem Header="Set Default Paste..."
                                          Command="Paste"
-                                         IsSplit="True"
                                          KeyTip="A">
                             <Fluent:MenuItem Header="1"
                                              Click="OnMenuItemClick" />

Fluent.Ribbon/Themes/Controls/MenuItem.xaml

@@ -452,6 +452,13 @@
         <Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto" />
         <Setter Property="Template" Value="{DynamicResource Fluent.Ribbon.Templates.MenuItem}" />
         <Style.Triggers>
+            <MultiDataTrigger>
+                <MultiDataTrigger.Conditions>
+                    <Condition Binding="{Binding Command, RelativeSource={RelativeSource Self}, Converter={x:Static converters:IsNullConverter.Instance}}" Value="False" />
+                    <Condition Binding="{Binding HasItems, RelativeSource={RelativeSource Self}}" Value="True" />
+                </MultiDataTrigger.Conditions>
+                <Setter Property="Fluent:MenuItem.IsSplit" Value="True" />
+            </MultiDataTrigger>
             <MultiTrigger>
                 <MultiTrigger.Conditions>
                     <Condition Property="Fluent:MenuItem.IsSplit" Value="True" />