private void AddOperatorElement(Element element)
{
float builtNumber = NumberBuilder.BuildNumber();
CalculatorModel.AddNumberToCalculation(builtNumber);
CalculatorModel.AddOperatorToCalculation(ElementEvaluator.EvaluateElement(element));
ShowNumber(builtNumber);
NumberBuilder.NewNumber();
}
private void AddNumericalElement(Element element)
{
if (NumberBuilder.BuildNumber() == CalculatorModel.MostRecentResult)
{
NumberBuilder.NewNumber();
}
NumberBuilder.Append(ElementEvaluator.EvaluateElement(element));
ShowNumber(NumberBuilder.BuildNumber());
}
public static void Append(string addedCharacters)
{
if (ElementEvaluator.IsOperator(addedCharacters))
{
return;
}
if (ElementEvaluator.EvaluateValue(addedCharacters) == Element.DECIMAL && NumberAsString.Contains(ElementEvaluator.EvaluateElement(Element.DECIMAL)))
{
return;
}
float multiplication = 1;
string tempAddedCharacters = addedCharacters;
for (int i = 0; i < tempAddedCharacters.Length; i++)
{
if (tempAddedCharacters.Contains(ElementEvaluator.EvaluateElement(Element.SIGN_CHANGE)))
{
multiplication *= -1;
int foundIndex = tempAddedCharacters.IndexOf(ElementEvaluator.EvaluateElement(Element.SIGN_CHANGE));
int foundLength = ElementEvaluator.EvaluateElement(Element.SIGN_CHANGE).Length;
tempAddedCharacters = tempAddedCharacters.Remove(foundIndex, foundLength);
}
}
NumberAsString += tempAddedCharacters;
string temp = NumberAsString;
NumberAsString = (multiplication * Number).ToString();
if (temp != NumberAsString)
{
if (NumberAsString.Contains("-"))
{
string signChanged = temp.Insert(0, "-");
if (signChanged != NumberAsString)
{
NumberAsString += ",";
}
}
else if (temp.Contains("-"))
{
string tempNumberAsString = NumberAsString.Insert(0, "-");
if (temp != tempNumberAsString)
{
NumberAsString += ",";
}
}
else
{
NumberAsString += ",";
}
}
}
private static float Calculate(List <float> numbers, List <string> operators)
{
List <float> tempNumbers = new List <float>(numbers);
float currentValue = tempNumbers[0];
string currentOperator = "";
tempNumbers.RemoveAt(0);
for (int i = 0; i < operators.Count && tempNumbers.Count > 0; i++)
{
currentOperator = operators[i];
switch (ElementEvaluator.EvaluateValue(operators[i]))
{
case Element.PLUS:
currentValue += tempNumbers.First();
break;
case Element.MINUS:
currentValue -= tempNumbers.First();
break;
case Element.MULTIPLICATION:
currentValue *= tempNumbers.First();
break;
case Element.DIVISION:
currentValue /= tempNumbers.First();
break;
default:
currentValue = DEFAULT_START_VALUE;
break;
}
tempNumbers.Remove(tempNumbers.First());
}
return(currentValue);
}