/// <summary>
/// Handles a key press. Used to let the completion list handle key presses while the
/// focus is still on the text editor.
/// </summary>
public void HandleKey(KeyEventArgs e)
{
if (listBox == null)
{
return;
}
// We have to do some key handling manually, because the default doesn't work with
// our simulated events.
// Also, the default PageUp/PageDown implementation changes the focus, so we avoid it.
switch (e.Key)
{
case Key.Down:
e.Handled = true;
listBox.SelectIndex(listBox.SelectedIndex + 1);
break;
case Key.Up:
e.Handled = true;
listBox.SelectIndex(listBox.SelectedIndex - 1);
break;
case Key.PageDown:
e.Handled = true;
listBox.SelectIndex(
listBox.SelectedIndex + listBox.VisibleItemCount);
break;
case Key.PageUp:
e.Handled = true;
listBox.SelectIndex(
listBox.SelectedIndex - listBox.VisibleItemCount);
break;
case Key.Home:
e.Handled = true;
listBox.SelectIndex(0);
break;
case Key.End:
e.Handled = true;
listBox.SelectIndex(listBox.Items.Count - 1);
break;
case Key.Tab:
case Key.Enter:
e.Handled = true;
RequestInsertion(e);
break;
}
}
/// <inheritdoc/>
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
listBox = GetTemplateChild("PART_ListBox") as CompletionListBox;
if (listBox != null)
{
listBox.ItemsSource = completionData;
if (completionData.Count > 0)
{
listBox.SelectIndex(0);
}
}
}