/// <summary>
/// Handles the search field onfocusin event.
/// </summary>
/// <param name="eventArgs">Event arguments.</param>
/// <returns>Returns awaitable task</returns>
protected async Task OnTextKeyDownHandler(KeyboardEventArgs eventArgs)
{
if (!DropdownVisible)
{
return;
}
// make sure everything is filtered
if (dirtyFilter)
{
FilterData();
}
var activeItemIndex = ActiveItemIndex;
if (eventArgs.Code == "Enter" || eventArgs.Code == "NumpadEnter" || eventArgs.Code == "Tab")
{
var item = FilteredData.ElementAtOrDefault(activeItemIndex);
if (item != null && ValueField != null)
{
await OnDropdownItemClicked(ValueField.Invoke(item));
}
}
else if (eventArgs.Code == "Escape")
{
await Clear();
}
else if (eventArgs.Code == "ArrowUp")
{
UpdateActiveFilterIndex(--activeItemIndex);
}
else if (eventArgs.Code == "ArrowDown")
{
UpdateActiveFilterIndex(++activeItemIndex);
}
}
