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Keyboard Support

RadRibbonView provides a keyboard navigation mechanisms using key tips and the arrow keys. You can enable this feature by setting the KeyTipService.IsKeyTipsEnabled attached property on the RadRibbonView control to True.

<telerik:RadRibbonView x:Name="radRibbonView" 
                       ApplicationName="RibbonViewApplication"
                       telerik:KeyTipService.IsKeyTipsEnabled="True" />

You can attach key tip text to every component in the RadRibbonView using the KeyTipSerive.AccessText attached property:

<telerik:RadRibbonView x:Name="radRibbonView" 
                       ApplicationName="RibbonViewApplication"
                       telerik:KeyTipService.IsKeyTipsEnabled="True">
    <telerik:RadRibbonView.Backstage>
        <telerik:RadRibbonBackstage telerik:KeyTipService.AccessText="B" />
    </telerik:RadRibbonView.Backstage>
</telerik:RadRibbonView>

Enabling the keytip service also activates the arrow keys navigation. Pressing the left, right, up or down arrow will change the currently hightlighted item. Also, the Enter/Space keys activates the current element, which is highlighted by the KeyboardNavigation.

When you start navigating with the arrows, the key tips will be hidden. Navigating with the arrow keys will handle the appropriate KeyUp/Down/PreviewDown events fired for the RadRibbonView

Telerik support recommends that you avoid using the arrow navigation with the ContextMenu because internally it captures the mouse and executes its own navigation between its children. Instead of using ContextMenu we suggest using Menu element.

KeyTipService class properties

The KeyTipsService class allows you to enable/disable key tips for the RadRibbonView control. It exposes the following properties that allow you to customize the keyboard navigation:

  • ActivationMode: Gets/sets the the predefined event on which the KeyTips and KeyboardNavigation are executed. The property is of type Telerik.Windows.Controls.RibbonView.KeyTips.ActivationMode enum and exposes the following options:

    • PreviewKeyDown: The keyboard navigation is activated when the PreviewKeyDown event of RadRibbonView is fired
    • KeyDown: The keyboard navigation is activated when the KeyDown event is fired
    • KeyUp (default value): The keyboard navigation is activated when the KeyUp event is fired
  • AccessText: Gets/sets the key tip activation text

  • AltAccessText: Gets/sets alternative key tip activation text. This property is applicable only to the RadRibbonGroup and affects the DialogLauncherCommand.

  • AccessKey: Gets/sets the combination of keys to be used for displaying the key tips. By default the key tips are displayed by pressing ALT. This property should be defined in the RadRibbonView definition:

        <telerik:RadRibbonView x:Name="radRibbonView" 
                               ApplicationName="RibbonViewApplication"
                               telerik:KeyTipService.AccessKey="Ctrl+Alt+Z"
                               telerik:KeyTipService.IsKeyTipsEnabled="True">
            ...
        </telerik:RadRibbonView>
    
  • AccessKeys: Property of type IEnumebable and it gets/sets a collection of KeyGestures that can be used to trigger the KeyTips display. Please note that the AccessKeys property can only be set in code either in code-behind or in a ViewModel. This is because a KeyGesture cannot be defined in XAML.

    If both AcessKey and AccessKeys properties are set, the value of the AcessKey property will be ignored. You can download a runnable project demonstrating how to take advantage of the KeyTipService.AccessKeys property from our online SDK repository. Please open this link and navigate to RibbonView/MultipleAccessKeys-KeyTips.

  • Activation: Used to define additional logic that can be implemented when using the keyboard navigation.

        <telerik:RadRibbonTab Header="Home" telerik:KeyTipService.AccessText="H">
            <telerik:RadRibbonGroup Header="Group 1.1" telerik:KeyTipService.AccessText="A">
                <telerik:RadRibbonButton x:Name="HomeButton1" 
                                         Click="HomeButton1_Click"
                                         telerik:KeyTipService.AccessText="Z"
                                         Text="HomeButton 1">
                    <telerik:KeyTipService.Activation>
                        <telerik:KeyTipActivation Activated="KeyTipActivation_Activated" />
                    </telerik:KeyTipService.Activation>
                </telerik:RadRibbonButton>
                ...
            </telerik:RadRibbonGroup>
            ...
        </telerik:RadRibbonTab>
    

        private void KeyTipActivation_Activated(object sender, Telerik.Windows.RadRoutedEventArgs e)
        {
            MessageBox.Show("The key tip of the "+(e.OriginalSource as RadRibbonButton).Text.ToString() + "was activated.");
        }
        private void HomeButton1_Click(object sender, RoutedEventArgs e)
        {
            MessageBox.Show((sender as RadRibbonButton).Text.ToString() + "was clicked.");
        }
    
        Private Sub KeyTipActivation_Activated(sender As Object, e As Telerik.Windows.RadRoutedEventArgs)
            MessageBox.Show("The key tip of the " & TryCast(e.OriginalSource, RadRibbonButton).Text.ToString() & "was activated.")
        End Sub
    
        Private Sub HomeButton1_Click(sender As Object, e As RoutedEventArgs)
            MessageBox.Show(TryCast(sender, RadRibbonButton).Text.ToString() & "was clicked.")
        End Sub
    

    In the example above, the KeyTipActivation.Activated() event handler will fire as soon as the HomeButton1 key tip is activated. This means that you can implement custom logic that will be executed before the button's Click() event is fired.

Activating key tips

<telerik:RadRibbonView x:Name="radRibbonView" telerik:KeyTipService.IsKeyTipsEnabled="True">
    <telerik:RadRibbonView.Backstage>
        <telerik:RadRibbonBackstage telerik:KeyTipService.AccessText="B" />
    </telerik:RadRibbonView.Backstage>
    <telerik:RadRibbonView.QuickAccessToolBar>
        <telerik:QuickAccessToolBar>
            <telerik:RadRibbonButton Foreground="Gray" 
                                     telerik:KeyTipService.AccessText="S"
                                     Text="Save" />
            <telerik:RadRibbonButton Foreground="Gray" 
                                     telerik:KeyTipService.AccessText="U"
                                     Text="Undo" />
            <telerik:RadRibbonButton Foreground="Gray" 
                                     telerik:KeyTipService.AccessText="P"
                                     Text="Print" />
        </telerik:QuickAccessToolBar>
    </telerik:RadRibbonView.QuickAccessToolBar>
    <telerik:RadRibbonTab Header="Home" telerik:KeyTipService.AccessText="H">
        <telerik:RadRibbonGroup Header="Group 1.1" telerik:KeyTipService.AccessText="A">
            <telerik:RadRibbonButton telerik:KeyTipService.AccessText="Z" Text="HomeButton 1" />
            <telerik:RadRibbonButton telerik:KeyTipService.AccessText="X" Text="HomeButton 2" />
            <telerik:RadRibbonButton telerik:KeyTipService.AccessText="C" Text="HomeButton 3" />
        </telerik:RadRibbonGroup>
        <telerik:RadRibbonGroup Header="Group 1.2" telerik:KeyTipService.AccessText="S">
            <telerik:RadRibbonButton telerik:KeyTipService.AccessText="W" Text="HomeButton 4" />
            <telerik:RadRibbonButton telerik:KeyTipService.AccessText="E" Text="HomeButton 5" />
            <telerik:RadRibbonButton telerik:KeyTipService.AccessText="R" Text="HomeButton 6" />
        </telerik:RadRibbonGroup>
        <telerik:RadRibbonGroup Header="Group 1.3" telerik:KeyTipService.AccessText="D">
            <telerik:RadRibbonButton telerik:KeyTipService.AccessText="G" Text="HomeButton 7" />
            <telerik:RadRibbonButton telerik:KeyTipService.AccessText="M" Text="HomeButton 8" />
            <telerik:RadRibbonButton telerik:KeyTipService.AccessText="N" Text="HomeButton 9" />
        </telerik:RadRibbonGroup>
    </telerik:RadRibbonTab>
    <telerik:RadRibbonTab Header="Options" telerik:KeyTipService.AccessText="O">...</telerik:RadRibbonTab>
</telerik:RadRibbonView>

When a control's keytip is activated, the action associated with the control will be executed:

  • Using a keytip of a RibbonTab will select the tab

  • Using a keytip of a RibbonSplitButton/RibbonDropDownButton will open the DropDown content of the button

  • Using a keytip of a RibbonGallery control will open the gallery

  • Using a keytip of a RibbonButton/RibbonRadioButton/RibbonToggleButton will execute the button's command or Click() event

  • Using a keytip on a collapsed RibbonGroup will expand the group

  • Using a keytip on a RibbonComboBox will open the ComboBox's DropDown content

You can navigate back through the layers of the keytips using Esc key.

Styles and Templates

The keytips are themeable and any built-in Telerik theme can be applied to them. However, if you need to further customize their appearance, you can edit the KeyTipControl ControlTemplate:

<SolidColorBrush x:Key="RibbonBarKeyTips_OuterBorderBrush" Color="#FF848484" />
<SolidColorBrush x:Key="RibbonBarKeyTips_Background" Color="#FFD9D9D9" />
<SolidColorBrush x:Key="RibbonBarKeyTips_InnerBorderBrush" Color="#FFFFFFFF" />
<Style TargetType="Telerik_Windows_Controls_RibbonView_KeyTips:KeyTipControl">
    <Setter Property="MinWidth" Value="16" />
    <Setter Property="MinHeight" Value="16" />
    <Setter Property="IsHitTestVisible" Value="False" />
    <Setter Property="BorderThickness" Value="1" />
    <Setter Property="BorderBrush" Value="{StaticResource RibbonBarKeyTips_OuterBorderBrush}" />
    <Setter Property="Background" Value="{StaticResource RibbonBarKeyTips_Background}" />
    <Setter Property="Padding" Value="2 -2 2 -1" />
    <Setter Property="HorizontalContentAlignment" Value="Center" />
    <Setter Property="VerticalContentAlignment" Value="Center" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="Telerik_Windows_Controls_RibbonView_KeyTips:KeyTipControl">
                <Border Background="{TemplateBinding Background}" 
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="{TemplateBinding BorderThickness}"
                        CornerRadius="1">
                    <Border BorderBrush="{StaticResource RibbonBarKeyTips_InnerBorderBrush}" BorderThickness="1">
                        <ContentPresenter Margin="{TemplateBinding Padding}" 
                                          HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                          VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
                    </Border>
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Each RadRibbonView control (as RadRibbonButton, RadRibbonTab, etc.) implements a VisualStateGroup with x:Name set to "KeyboardNavigationStates" in its ControlTemplate. When an element should be highlighted by the arrow navigation, it goes into this state group. All controls that do not implement that VisuaState go into "MouseOver" state. If you want to use the default highlighting on non-ribbonview controls you can customize their template by adding the "KeyboardNavigationStates" visual state group and the "KeyboardFocused" and "KeyboardUnfocused" VisualStates.

The Telerik_Windows_Controls_RibbonView_KeyTips namespace definition is:
xmlns:Telerik_Windows_Controls_RibbonView_KeyTips="clr-namespace:Telerik.Windows.Controls.RibbonView.KeyTips;assembly=Telerik.Windows.Controls.RibbonView"

See Also