private void OnKeyboardEvent(
AutocompleteSrcType src, KeyboardEvent <HTMLInputElement> ev)
{
Logger.Debug(GetType(), "autocomplete input={0} key={1} src={2}", _input.Value, ev.KeyCode, src);
if (!ev.IsUserGenerated())
{
return;
}
if (src == AutocompleteSrcType.KeyDown)
{
switch (ev.KeyCode)
{
case Magics.KeyCodeEnter:
var changed = false;
if (!_activeItemNo.HasValue)
{
if (_input.Value.Length <= 0)
{
_value = default(DataT);
changed = true;
}
else if (_availOptions.Count == 1 && _isCompleteValue(_input.Value, _availOptions[0]))
{
_value = _availOptions[0];
changed = true;
}
}
else
{
var act = _availOptions[_activeItemNo.Value];
if (_isCompleteValue(_input.Value, act))
{
_value = act;
changed = true;
}
}
if (changed)
{
HideOptions();
Changed?.Invoke(Value, true);
}
break;
case Magics.KeyCodeBackspace:
ScheduleAutocomplete();
break;
case Magics.KeyCodeArrowUp:
if (!_activeItemNo.HasValue)
{
break;
}
DeactivateItem(_activeItemNo.Value);
_activeItemNo--;
if (_activeItemNo.Value < 0)
{
ChangeInputValueTo(_valueBeforeArrows);
_activeItemNo = null;
break;
}
if (_activeItemNo <= _options.ChildElementCount - 1)
{
ActivateItem(_activeItemNo.Value);
ChangeInputValueTo(_options.ChildNodes[_activeItemNo.Value].TextContent);
}
break;
case Magics.KeyCodeArrowDown:
if (_activeItemNo.HasValue)
{
DeactivateItem(_activeItemNo.Value);
}
if (!_activeItemNo.HasValue)
{
if (_options.ChildElementCount < 0)
{
break;
}
_valueBeforeArrows = _input.Value;
_activeItemNo = 0;
}
else if (_activeItemNo + 1 <= _options.ChildElementCount - 1)
{
_activeItemNo++;
}
ActivateItem(_activeItemNo.Value);
ChangeInputValueTo(_options.ChildNodes[_activeItemNo.Value].TextContent);
break;
}
return;
}
if (src == AutocompleteSrcType.KeyPressed)
{
ScheduleAutocomplete();
return;
}
}
