public void Attach(EventHandler <Event> handler, Validation.Mode mode)
{
if (mode == Validation.Mode.OnBlur)
{
onChange += (s, e) => handler(this, e);
}
else
{
onInput += (s, e) => handler(this, e);
}
}
public static T Validation <T>(this T component, Func <T, string> validate, Validator validator = null, Validation.Mode mode = Components.Validation.Mode.OnInput) where T : ICanValidate <T>
{
if (validate is null)
{
throw new ArgumentNullException(nameof(validate));
}
void handler(object sender, Event e)
{
var s = (T)sender;
var msg = validate(s) ?? "";
var isInvalid = !string.IsNullOrWhiteSpace(msg);
s.Error = msg;
s.IsInvalid = isInvalid;
validator?.RaiseOnValidation();
}
component.Attach(handler, mode);
handler(component, null);
validator?.Register(component, () => handler(component, null));
validator?.RaiseOnValidation();
return(component);
}