public RadioBasedSingleChoice(string labelOrNull = null, RadioBasedSingleChoiceItemAdder customItemAdder = null)
{
BeforeAddItems = (element, i) => null;
ItemAdder = customItemAdder ?? ((ctx, cntnr, rawItem, itemElem, lblElem, itemNo) => {
cntnr.AppendChild(itemElem);
cntnr.AppendChild(lblElem);
});
_uniqueNumberAsName = UniqueIdGenerator.GenerateAsString();
_container = new HTMLDivElement();
_container.ClassName = GetType().FullNameWithoutGenerics();
if (labelOrNull != null)
{
_genericLabelOrNull = new HTMLLabelElement {
TextContent = labelOrNull
};
_container.AppendChild(_genericLabelOrNull);
}
_logic = new ControlWithValueLogic <Tuple <string, string> >(
(newVal, isUser) => Changed?.Invoke(newVal, isUser),
() => {
var active = _valueToItem.Values.FirstOrDefault(x => x.Checked);
return(active == null ? Tuple.Create("", "") : Tuple.Create(active.Value, _valueToLabel[active.Value]));
},
v => {
var emptying = v == null || string.IsNullOrEmpty(v.Item1);
Logger.Debug(GetType(), "setPhysicalValue emptying?={0} value=({1};{2})",
emptying, v?.Item1, v?.Item2);
if (emptying)
{
foreach (var x in _valueToItem.Values)
{
if (x.Checked)
{
x.Checked = false;
break;
}
}
return;
}
_valueToItem[v.Item1].Checked = true;
},
() => _valueToItem.Any() && !_valueToItem.First().Value.Disabled,
v => _valueToItem.Values.ForEach(x => _valueToItem.First().Value.Disabled = !v),
() => _container.ClassList.Contains(Magics.CssClassIsValidating),
v => _container.AddOrRemoveClass(v, Magics.CssClassIsValidating)
);
_logic.ValueToString = x => x == null ? "<Tuple null>" : $"<Tuple fst={x.Item1} snd={x.Item2}>";
}