public JsonResult Clear()
{
ElementaryArithCaculator receiver;
if (Session["calculator"] == null)
{
Session.Add("calculator", new ElementaryArithCaculator());
}
if (Session["invoker"] == null)
{
Session.Add("invoker", new CalculationInvoker());
}
receiver = new ElementaryArithCaculator();
invoker = new CalculationInvoker();
Session["calculator"] = receiver;
Session["invoker"] = invoker;
return(Json(receiver.GetResult(), JsonRequestBehavior.AllowGet));
}
public JsonResult Compute(int operand, string @operator)
{
ElementaryArithCaculator receiver;
if (Session["calculator"] == null)
{
Session.Add("calculator", new ElementaryArithCaculator());
}
if (Session["invoker"] == null)
{
Session.Add("invoker", new CalculationInvoker());
}
receiver = (ElementaryArithCaculator)Session["calculator"];
invoker = (CalculationInvoker)Session["invoker"];
//(new CalculationInvoker()).Compute(receiver, @operator, operand);
invoker.Compute(receiver, @operator, operand);
Session["calculator"] = receiver;
Session["invoker"] = invoker;
return(Json(receiver.GetResult(), JsonRequestBehavior.AllowGet));
}
