internal override void ListenGuestMsg(object sender, UIGuestMsgEventArgs e)
{
//since we don't want a 'blank round trip'
//(invoke a blank action), so , => check before invocation
if (_ownerBeh.HasGuestMsg)
{
_ownerBeh.InvokeGuestMsg((S)sender, _state, e);
}
}
void IEventListener.ListenGuestMsg(UIGuestMsgEventArgs e)
{
}
void IEventListener.ListenGuestMsg(UIGuestMsgEventArgs e)
{
this.OnGuestMsg(e);
}
internal abstract void ListenGuestMsg(object sender, UIGuestMsgEventArgs e);
internal void InvokeGuestMsg(S sender, T state, UIGuestMsgEventArgs e) => GuestMsg.Invoke(new SenderInfo(sender, state), e);
