protected BaseCalculatorState(decimal AccumulatorValue, string ScreenText, CalculatorOperator calculatorOperator, int maxDigitsOnScreen)
{
this.AccumulatorValue = AccumulatorValue;
this.ScreenText = ScreenText;
this.calculatorOperator = calculatorOperator;
this.maxDigitsOnScreen = maxDigitsOnScreen;
}
public override ICalculator operatorButtonPressed(CalculatorOperator newCalculatorOperator)
{
log.Debug("Wcisnieto przycisk operatora " + calculatorOperator);
try
{
if (calculatorOperator == CalculatorOperator.DIVIDE && ScreenValue == 0)
{
return(new ErrorCalculatorState(Constants.defaultErrorString, maxDigitsOnScreen));
}
AccumulatorValue = calculatorOperator.executeAction(ScreenValue, AccumulatorValue);
return(new ScreenViewCalculatorState(AccumulatorValue, "0", newCalculatorOperator, maxDigitsOnScreen));
} catch (OverflowException e)
{
log.Warn("Overflow exception ", e);
return(new ErrorCalculatorState(Constants.OVERFLOW, maxDigitsOnScreen));
}
}
public override ICalculator operatorButtonPressed(CalculatorOperator calculatorOperator)
{
log.Debug("Wcisnieto przycisk operatora " + calculatorOperator);
return(new ScreenViewCalculatorState(AccumulatorValue, "0", calculatorOperator, maxDigitsOnScreen));
}
public AccumulatorViewCalculatorState(decimal accumulatorValue, string screenValue, CalculatorOperator calculatorOperator, int maxDigitsOnScreen)
: base(accumulatorValue, screenValue, calculatorOperator, maxDigitsOnScreen)
{
log.Debug("Nowy stan kalkulatora:AccumulatorViewCalculatorState: Wartosc w akumulatorze:" + accumulatorValue + " Wartosc na ekranie:" + screenValue + " operator:" + calculatorOperator);
}
public ICalculator operatorButtonPressed(CalculatorOperator calculatorOperator)
{
log.Error("Nie powinno to sie stac: Wcisnieto przycisk operatora " + calculatorOperator);
return(this);
}
public void operatorButtonPressed(CalculatorOperator calculatorOperator)
{
currentCalculator = currentCalculator.operatorButtonPressed(calculatorOperator);
}
public abstract ICalculator operatorButtonPressed(CalculatorOperator calculatorOperator);
