/// <summary>
/// To change the current expression depending on the pressed operation and the state of the buttons
/// </summary>
private string NewCurrentExpression()
{
if (buttonsState.EqualBtnPressed)
{
buttonsState.NumberPadBtnPressed_Change(true);
buttonsState.AdditionalOperationBtnPressed_Change(false);
buttonsState.EqualBtnPressed_Change(false);
return(NumberStandardization.Standardization(calculate.CalcPercentage(NumberStandardization.Standardization(currentData.CurrentNumber), currentData.CurrentExpression.Remove(currentData.CurrentExpression.Length - 3, 3)).ToString()));
}
else
{
if (currentData.CurrentExpression != string.Empty)
{
if (buttonsState.AdditionalOperationBtnPressed)
{
return(ChangeTheSetOfRecentAdditionalOperations(currentData.CurrentExpression));
}
else
{
return(currentData.CurrentExpression + NumberStandardization.Standardization(calculate.CalcPercentage(NumberStandardization.Standardization(currentData.CurrentNumber), currentData.CurrentExpression.Remove(currentData.CurrentExpression.Length - 3, 3)).ToString()));
}
}
else
{
return(currentData.CurrentExpression + NumberStandardization.Standardization(calculate.CalcPercentage(NumberStandardization.Standardization(currentData.CurrentNumber), ((int)Digits.Zero).ToString()).ToString()));
}
}
}
/// <summary>
/// To change the current expression depending on the pressed operation and the state of the buttons
/// </summary>
private string NewCurrentExpression(BasicMathOperations pressedOperation)
{
//If the expression was calculated and "=" was pressed again
if (buttonsState.EqualBtnPressed && (pressedOperation == BasicMathOperations.Equal) && Common.MathSignCheck(currentData.CurrentExpression))
{
return(NumberStandardization.Standardization(currentData.CurrentNumber) + CopyLastOperation(currentData.CurrentExpression.Remove(currentData.CurrentExpression.Length - 3, 3)) + SetSelectedBasicMathOperation(pressedOperation));
}
else if (pressedOperation == BasicMathOperations.Sqr)
{
return(SetSelectedBasicMathOperation(pressedOperation) + NumberStandardization.StandardizationSqr(currentData.CurrentNumber));
}
else if (pressedOperation == BasicMathOperations.Sqrt)
{
return(SetSelectedBasicMathOperation(pressedOperation) + NumberStandardization.StandardizationSqr(currentData.CurrentNumber));
}
else if (pressedOperation == BasicMathOperations.PartOfTheWhole)
{
return(SetSelectedBasicMathOperation(pressedOperation) + NumberStandardization.StandardizationSqr(currentData.CurrentNumber));
}
else if (buttonsState.NumberPadBtnPressed)
{
return(currentData.CurrentExpression + NumberStandardization.Standardization(currentData.CurrentNumber) + SetSelectedBasicMathOperation(pressedOperation));
}
//Сhanging the basic math operation sign
else
{
return(ChangeOperation(currentData.CurrentExpression, SetSelectedBasicMathOperation(pressedOperation)));
}
}
/// <summary>
/// To change the current expression depending on the pressed operation and the state of the buttons
/// </summary>
private string NewCurrentExpression(BasicMathOperations pressedOperation)
{
//If the expression was calculated and "=" was pressed again
if (buttonsState.EqualBtnPressed && (pressedOperation == BasicMathOperations.Equal) && Common.MathSignCheck(currentData.CurrentExpression))
{
return(NumberStandardization.Standardization(currentData.CurrentNumber) + CopyLastOperation(currentData.CurrentExpression.Remove(currentData.CurrentExpression.Length - 3, 3)) + SetSelectedBasicMathOperation(pressedOperation));
}
//If the number and additional operation were pressed
else if (buttonsState.NumberPadBtnPressed && buttonsState.AdditionalOperationBtnPressed)
{
return(currentData.CurrentExpression + SetSelectedBasicMathOperation(pressedOperation));
}
//If a number was pressed, but not an additional operation
else if (buttonsState.NumberPadBtnPressed && !buttonsState.AdditionalOperationBtnPressed)
{
return(currentData.CurrentExpression + NumberStandardization.Standardization(currentData.CurrentNumber) + SetSelectedBasicMathOperation(pressedOperation));
}
//Сhanging the basic math operation sign
else
{
return(ChangeOperation(currentData.CurrentExpression, SetSelectedBasicMathOperation(pressedOperation)));
}
}
/// <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) + ')');
}
}
