/// <summary>
/// To add the current number and the selected operation to the current expression
/// </summary>
public void SetBasicMathOperation(BasicMathOperations pressedOperation)
{
//If the expression was calculated and any basic math operation was pressed, except for "="
if (buttonsState.EqualBtnPressed && (pressedOperation != BasicMathOperations.Equal))
{
currentData.CurrentExpression = clearData.ClearExpression(currentData.CurrentExpression);
buttonsState.NumberPadBtnPressed_Change(true);
buttonsState.AdditionalOperationBtnPressed_Change(false);
buttonsState.EqualBtnPressed_Change(false);
}
currentData.CurrentExpression = NewCurrentExpression(pressedOperation);
try
{
currentData.CurrentNumber = pressedOperation == BasicMathOperations.Equal
? calculate.Calc(currentData.CurrentExpression).ToString()
: clearData.ClearNumber(currentData.CurrentNumber);
}
catch (DivideByZeroException) { currentData.CurrentNumber = "Division by zero"; }
catch (OverflowException) { currentData.CurrentNumber = "NaN"; }
if (pressedOperation == BasicMathOperations.Equal)
{
buttonsState.EqualBtnPressed_Change(true);
}
buttonsState.NumberPadBtnPressed_Change(false);
buttonsState.AdditionalOperationBtnPressed_Change(false);
}
/// <summary>
/// To add the current number and the selected operation to the current expression
/// </summary>
public void SetBasicMathOperation(BasicMathOperations pressedOperation)
{
//If the expression was calculated and any basic math operation was pressed, except for "="
if (buttonsState.EqualBtnPressed && (pressedOperation != BasicMathOperations.Equal))
{
currentData.CurrentExpression = clearData.ClearExpression(currentData.CurrentExpression);
buttonsState.NumberPadBtnPressed_Change(true);
buttonsState.AdditionalOperationBtnPressed_Change(false);
buttonsState.EqualBtnPressed_Change(false);
}
currentData.CurrentExpression = NewCurrentExpression(pressedOperation);
currentData.CurrentNumber = pressedOperation == BasicMathOperations.Equal ? calculate.Calc(currentData.CurrentExpression).ToString() : clearData.ClearNumber(currentData.CurrentNumber);
if (double.IsNaN(double.Parse(currentData.CurrentNumber)) || double.IsPositiveInfinity(double.Parse(currentData.CurrentNumber)) ||
double.IsNegativeInfinity(double.Parse(currentData.CurrentNumber)))
{
currentData.CurrentNumber = "Calculation error";
}
if (pressedOperation == BasicMathOperations.Equal)
{
buttonsState.EqualBtnPressed_Change(true);
}
buttonsState.NumberPadBtnPressed_Change(false);
buttonsState.AdditionalOperationBtnPressed_Change(false);
}
/// <summary>
/// Clears all data
/// </summary>
/// <remarks>
/// At the same time, the numbers recorded in the memory are stored
/// </remarks>
public void ClearAll()
{
currentData.CurrentNumber = ClearNumber(currentData.CurrentNumber);
currentData.CurrentExpression = ClearExpression(currentData.CurrentExpression);
buttonsState.NumberPadBtnPressed_Change(true);
buttonsState.AdditionalOperationBtnPressed_Change(false);
buttonsState.EqualBtnPressed_Change(false);
}