// ************************************************************************
private void ResultsOnCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (e.Action == NotifyCollectionChangedAction.Add)
{
ListBoxResults.ScrollIntoView(ListBoxResults.Items[ListBoxResults.Items.Count - 1]);
}
}
protected override void OnPreviewKeyDown(KeyEventArgs e)
{
if (e.Key == App.Prefs.ActivationKey)
{
e.Handled = !_canTypeActivationKey;
}
base.OnPreviewKeyDown(e);
if (e.Key == Key.Down)
{
if (TextBoxSearchBar.IsFocused)
{
if (ListBoxResults.HasItems)
{
ListBoxResults.SelectedIndex = 0;
ListBoxResults.UpdateLayout();
var listBoxItem = (ListBoxItem)ListBoxResults
.ItemContainerGenerator
.ContainerFromItem(ListBoxResults.Items[0]);
listBoxItem.Focus();
ListBoxResults.Items.Refresh();
ListBoxResults.ScrollIntoView(listBoxItem);
}
}
if (ListBoxResults.SelectedIndex == ListBoxResults.Items.Count - 1)
{
e.Handled = true;
}
}
else if (e.Key == Key.Up)
{
if (ListBoxResults.SelectedIndex == 0)
{
e.Handled = true;
}
}
}
