How to display separator in custom contextmenu of WPF DockingManager?
As per current implementation of WPF DockingManager CustomContextMenu there is no direct support to add separator as like in Menu control. But this can be achieved by customizing the MenuItem style of the CustomContextMenu with help of IsSeparator property of SeparatorExt class. If the attached property "IsSeparator" is true, separator will be displayed instead of header. Below code snippets are demonstrate the same,
DockWindowMenuItemStyle:
<Style TargetType="MenuItem" x:Key="DockWindowMenuItemSeparatorStyle"> <Style.Triggers> <Trigger Property="local:SeparatorExt.IsSeparator" Value="True"> <Setter Property="Template"> <Setter.Value> <ControlTemplate> <Border Height="1" Margin="5,0,5,0" BorderBrush="#FFD7D7D7" BorderThickness="0.5"/> </ControlTemplate> </Setter.Value> </Setter> </Trigger> </Style.Triggers> </Style>
DocumentWindowMenuItemStyle:
<Style TargetType="MenuItem" x:Key="DocumentMenuItemSeparatorStyle"> <Style.Triggers> <Trigger Property="local:SeparatorExt.IsSeparator" Value="True"> <Setter Property="Template"> <Setter.Value> <ControlTemplate> <Border Height="1" Margin="26,0,5,0" BorderBrush="#FFD7D7D7" BorderThickness="0.5"/> </ControlTemplate> </Setter.Value> </Setter> </Trigger> </Style.Triggers> </Style>
MainWindow.xaml
<syncfusion:DockingManager DockWindowContextMenuItemStyle="{StaticResource DockWindowMenuItemSeparatorStyle}" UseDocumentContainer="True" Name="Docking" >
<syncfusion:DockingManager.DocumentTabItemStyle>
<Style TargetType="syncfusion:TabItemExt">
<Setter Property="TabItemContextMenuItemStyle" Value="{StaticResource DocumentMenuItemSeparatorStyle}"/>
</Style>
</syncfusion:DockingManager.DocumentTabItemStyle>
<syncfusion:DockingManager.DocumentTabItemContextMenuItems>
<syncfusion:DocumentTabItemMenuItemCollection>
<syncfusion:CustomMenuItem Header="Custom1" />
<syncfusion:CustomMenuItem Header="Custom2" local:SeparatorExt.IsSeparator="True"/>
<syncfusion:CustomMenuItem Header="Custom3" />
</syncfusion:DocumentTabItemMenuItemCollection>
</syncfusion:DockingManager.DocumentTabItemContextMenuItems>
<syncfusion:DockingManager.CustomMenuItems>
<syncfusion:CustomMenuItemCollection>
<syncfusion:CustomMenuItem Header="Custom1"/>
<syncfusion:CustomMenuItem Header="Custom2"/>
<syncfusion:CustomMenuItem Header="Custom3"/>
<syncfusion:CustomMenuItem local:SeparatorExt.IsSeparator="True"/>
<syncfusion:CustomMenuItem Header="Custom4"/>
</syncfusion:CustomMenuItemCollection>
</syncfusion:DockingManager.CustomMenuItems>
<ContentControl x:Name="Dock1" syncfusion:DockingManager.Header="Dock1" syncfusion:DockingManager.DesiredWidthInDockedMode="300"/>
<ContentControl syncfusion:DockingManager.Header="Dock2" syncfusion:DockingManager.SideInDockedMode="Tabbed" syncfusion:DockingManager.TargetNameInDockedMode="Dock1"/>
<ContentControl syncfusion:DockingManager.Header="Dock3" syncfusion:DockingManager.State="Document"/>
<ContentControl syncfusion:DockingManager.Header="Dock4" syncfusion:DockingManager.State="Document"/>
</syncfusion:DockingManager>
SeparatorExt.cs
public class SeparatorExt : DependencyObject
{
public static bool GetIsSeparator(DependencyObject obj)
{
return (bool)obj.GetValue(IsSeparatorProperty);
}
public static void SetIsSeparator(DependencyObject obj, bool value)
{
obj.SetValue(IsSeparatorProperty, value);
}
// Using a DependencyProperty as the backing store for IsSeparator. This enables animation, styling, binding, etc...
public static readonly DependencyProperty IsSeparatorProperty = DependencyProperty.RegisterAttached("IsSeparator", typeof(bool), typeof(SeparatorExt), new PropertyMetadata(false));
}
Conclusion
I hope you enjoyed learning about how to display separator in custom contextmenu of WPF DockingManager.
You can refer to our WPF DockingManager feature tour page to know about its other groundbreaking feature representations. You can also explore our WPF DockingManage documentation to understand how to create and manipulate data.
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