show method
Implementation
Future<bool> show() async {
switch (widget.model.type) {
case "range":
await _showDateRangePicker(_getDatePickerMode());
break;
case "time":
await _showTimePicker(_getTimePickerMode());
break;
default:
await _showDateTimePicker(_getDatePickerMode(), _getTimePickerMode());
}
return true;
}