private void HandleKeyPress(object sender, KeyEventArgs e)
{
switch (e.Key)
{
case Key.Tab:
if (SelectedItem != null)
{
CommitSelectionAndMoveFocus();
}
break;
case Key.Enter:
CommitSelectionAndMoveFocus();
e.Handled = true;
break;
case Key.Escape:
Flyout.IsOpen = false;
TargetLocationSearchTextBox.ScrollToEnd();
e.Handled = true;
break;
case Key.Down:
if (Options.Items.Count > 0)
{
Options.ScrollIntoView(Options.Items[0]);
FrameworkElement fe = (FrameworkElement)Options.ItemContainerGenerator.ContainerFromIndex(0);
fe?.Focus();
Options.SelectedIndex = 0;
e.Handled = true;
}
break;
}
}
private void OnLostFocus(object sender, RoutedEventArgs e)
{
if (SelectedItem != null && !Options.IsKeyboardFocusWithin)
{
Commit(SelectedItem);
TargetLocationSearchTextBox.ScrollToEnd();
}
}
private void HandleListBoxKeyPress(object sender, KeyEventArgs e)
{
int index = TargetLocationSearchTextBox.CaretIndex;
switch (e.Key)
{
case Key.Tab:
case Key.Enter:
CommitSelectionAndMoveFocus();
e.Handled = true;
break;
case Key.Up:
if (Options.SelectedIndex == 0)
{
SelectedItem = Items[0];
LostFocus -= OnLostFocus;
TargetLocationSearchTextBox.Focus();
TargetLocationSearchTextBox.CaretIndex = index;
LostFocus += OnLostFocus;
}
break;
case Key.Escape:
Flyout.IsOpen = false;
TargetLocationSearchTextBox.ScrollToEnd();
e.Handled = true;
break;
case Key.Down:
case Key.PageDown:
case Key.PageUp:
case Key.Home:
case Key.End:
break;
default:
LostFocus -= OnLostFocus;
TargetLocationSearchTextBox.Focus();
TargetLocationSearchTextBox.CaretIndex = index;
LostFocus += OnLostFocus;
break;
}
}
private void HandleKeyPress(object sender, KeyEventArgs e)
{
switch (e.Key)
{
case Key.Tab:
// SelectedItem could be null if the key press came from keyboard navigation and not commit operation.
// In this case we will just move the focus to next control.
if (SelectedItem == null)
{
TargetLocationSearchTextBox.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
}
else
{
CommitSelectionAndMoveFocus();
}
e.Handled = true;
break;
case Key.Enter:
CommitSelectionAndMoveFocus();
e.Handled = true;
break;
case Key.Escape:
Flyout.IsOpen = false;
TargetLocationSearchTextBox.ScrollToEnd();
e.Handled = true;
break;
case Key.Down:
if (Options.Items.Count > 0)
{
Options.ScrollIntoView(Options.Items[0]);
FrameworkElement fe = (FrameworkElement)Options.ItemContainerGenerator.ContainerFromIndex(0);
fe?.Focus();
Options.SelectedIndex = 0;
e.Handled = true;
}
break;
}
}