/// <inheritdoc/>
public void NotifyFocusableComponentInitialized(IFocusableComponent focusableComponent)
{
if (focusableComponent == null)
{
return;
}
if (!FocusableComponents.Contains(focusableComponent))
{
FocusableComponents.Add(focusableComponent);
}
}
/// <inheritdoc/>
public void NotifyFocusableComponentRemoved(IFocusableComponent focusableComponent)
{
if (focusableComponent == null)
{
return;
}
if (FocusableComponents.Contains(focusableComponent))
{
FocusableComponents.Remove(focusableComponent);
}
}
/// <summary>
/// Handles the focus of the nested component.
/// </summary>
/// <returns></returns>
protected Task HandleFocusableComponent()
{
// only one component can be focused
if (HasFocusableComponents)
{
var firstFocusableComponent = FocusableComponents.FirstOrDefault(x => x.Autofocus);
// take first component if Autofocus is unspecified
if (firstFocusableComponent == null)
{
firstFocusableComponent = FocusableComponents.FirstOrDefault();
}
if (firstFocusableComponent != null)
{
return(firstFocusableComponent.Focus());
}
}
return(Task.CompletedTask);
}
