/// <summary>
/// To change the current expression depending on the pressed operation and the state of the buttons
/// </summary>
private string NewCurrentExpression(AdditionalOperations pressedOperation)
{
//If an additional operation is not used for the first time
if (buttonsState.AdditionalOperationBtnPressed)
{
return(ChangeTheSetOfRecentAdditionalOperations(currentData.CurrentExpression, SetSelectedAdditionalOperation(pressedOperation)));
}
else
{
return(currentData.CurrentExpression + SetSelectedAdditionalOperation(pressedOperation) + '(' + NumberStandardization.Standardization(currentData.CurrentNumber) + ')');
}
}
/// <summary>
/// To set the symbolic representation of an additional operation
/// </summary>
/// <returns>
/// A string representing the selected operation
/// </returns>
private string SetSelectedAdditionalOperation(AdditionalOperations pressedOperation)
{
switch (pressedOperation)
{
case AdditionalOperations.PartOfTheWhole: return("1/");
case AdditionalOperations.Exponentiation: return("Sqr");
case AdditionalOperations.RootExtraction: return("√");
}
return("Operation not found");
}
/// <summary>
/// To add the selected operation applied to the current number in the current expression
/// </summary>
public void SetAdditionalOperation(AdditionalOperations pressedOperation)
{
if (buttonsState.EqualBtnPressed)
{
currentData.CurrentExpression = clearData.ClearExpression(currentData.CurrentExpression);
buttonsState.NumberPadBtnPressed_Change(true);
buttonsState.AdditionalOperationBtnPressed_Change(false);
buttonsState.EqualBtnPressed_Change(false);
}
currentData.CurrentExpression = NewCurrentExpression(pressedOperation);
currentData.CurrentNumber = clearData.ClearNumber(currentData.CurrentNumber);
buttonsState.NumberPadBtnPressed_Change(true);
buttonsState.AdditionalOperationBtnPressed_Change(true);
}
