public static OperStruct OperSet(Action <int> _operFunc, int _operValue)
{
OperStruct operStru = new OperStruct();
operStru.OperFunc = _operFunc;
operStru.OperValue = _operValue;
return(operStru);
}
public void Undo()
{
OperStruct operFunc = stack.Pop();
if (operFunc.OperFunc != null && _reverseOper.ContainsKey(operFunc.OperFunc))
{
_reverseOper[operFunc.OperFunc](operFunc.OperValue);
_undo = true;
}
}
public void RepeatLastCommand()
{
OperStruct topOfStack = stack.Peek();
if (stack.Count > 1)
{
if (topOfStack.OperFunc != null)
{
if (!_undo) // if not called undo
{
_reverseOper[topOfStack.OperFunc](topOfStack.OperValue);
}
else // called undo
{
stack.Pop();
topOfStack = stack.Pop();
_reverseOper[topOfStack.OperFunc](topOfStack.OperValue);
_undo = true;
}
}
}
}
public void Division(int value)
{
_total /= value;
_undo = false;
stack.Push(OperStruct.OperSet(Division, value));
}
public void Multiply(int value)
{
_total *= value;
_undo = false;
stack.Push(OperStruct.OperSet(Multiply, value));
}
public void Subtract(int value)
{
_total -= value;
_undo = false;
stack.Push(OperStruct.OperSet(Subtract, value));
}
public void Add(int value)
{
_total += value;
_undo = false;
stack.Push(OperStruct.OperSet(Add, value));
}
