Keyboard navigation issues when using ItemsRepeater

[StefanKoell]

Describe the bug

In the provided sample, I'm using an ItemsRepeater and a nested ItemsRepeater to create multiple toggle buttons. The sample also has 2 toggle buttons created in XAML directly. Tabbing through the items allows me to tab through the XAML generated toggle buttons until I reach the first toggle button created by the ItemsRepeater. I can't tab to the other items.

Some additional observations:

• The menu in the provided sample is also included when cycling through the controls using the tab key. Although only the first item is highlighted with the white focus adorner. I can use the cursor keys in the menu but it doesn't really move the white focus adorner to the item.
• I can use keyboard accelerators (if unique) to move/toggle a specific toggle button but when duplicate accelerators are in place, I can't cycle through those by repeatedly hit the accelerator. There are already open issues:
  Duplicate Accelerator Keys don't work for nested MenuItem Headers Avalonia#7090
  Menu with duplicate accelerators always incorrectly selects the first one Avalonia#13160

To Reproduce

A simple repro case can be found here:
https://github.com/StefanKoell/Misc/tree/main/src/AvaTabKeyIssue

1. Start the app
2. Hit the tab keys to cycle through the items
3. Note that I can't reach items beyond the first one in the items repeater.

Expected behavior

When tabbing through the UI, I expect that all controls (with IsTabStop set to true) show the white focus adorner to allow keyboard interaction. I would also expect to cycle through all the items and show the white focus adorner using the accelerator key when multiple identical keys are assigned.

Environment

• OS: Windows 11
• .NET 8
• Avalonia-Version: 11.0.6

[michalczerwinski]

I ran into the same issue, multiple buttons in IteamRepeater makes it impossible to focus other then first one with the keyboard.
The workaround is executing:

KeyboardNavigation.SetTabNavigation(ItemRepeater, KeyboardNavigationMode.Continue);

in the parent control. The root cause is "KeyboardNavigation.SetTabNavigation(this, KeyboardNavigationMode.Once)" is called in ItemRepeater ctor.

@maxkatz6: Is this something you would accept the PR for? Looks like the simple one, but I don't know the local rules...

[MSaqib-Rocket]

	<UserControl.Resources>
            <ResourceDictionary>
				<ResourceDictionary.MergedDictionaries>
					<Style Selector="Button.no-hover:pointerover">
						<Setter Property="Background" Value="Transparent"/>
					    <Setter Property="BorderBrush" Value="Transparent"/>
                        <Setter Property="Template">
                            <ControlTemplate>
                                <ContentPresenter/>
                            </ControlTemplate>
                        </Setter>
					</Style>
				</ResourceDictionary.MergedDictionaries>
			</ResourceDictionary>
    </UserControl.Resources>
	
<StackPanel Margin="20">
  <TextBlock FontFamily="Poppins" FontWeight="Bold" Margin="0 5">Projects</TextBlock>
  <ItemsRepeater  ItemsSource="{Binding domainList}" >
        <ItemsRepeater.ItemTemplate>
            <DataTemplate>
              <Border Background="White" Margin="0,10,0,0"
                  Padding="5">
                    <StackPanel Orientation="Vertical">
                      <TextBlock FontFamily="Poppins" Margin="5 5" FontWeight="Bold" Text="{Binding ProjectName}"/>
                      <!--<TextBlock Name="domainPath" Cursor="Hand" FontFamily="Poppins" Margin="5 5"  
                                  Text="{Binding Domain}"
					              />-->
					    <Button x:Name="domainBtn" Classes="no-hover" Background="Transparent" BorderThickness="0" Cursor="Hand"
                                Command="{Binding DataContext.DomainClickCommand, RelativeSource={RelativeSource AncestorType={x:Type UserControl}}}"
                                CommandParameter="{Binding}">
                            <TextBlock FontFamily="Poppins" Margin="5 5" Text="{Binding Domain}" />
                        </Button>
                    </StackPanel>
              </Border>
            </DataTemplate>
        </ItemsRepeater.ItemTemplate>
    </ItemsRepeater>
</StackPanel>

Here is my user control. I want to get the text of the textblock which is inside the button on click function.

And here is the viewModel for the usercontrol.

[MSaqib-Rocket]

it is accepting the click but I want to get text at runtime

[StefanKoell]

Update from my side: I switched from ItemsRepeater to ItemsControl which resolves my particular issue with the tab key navigation. I don't want to close the issue because others are still having issues with the ItemsRepeater.