internal void ApplyInput(ICalculatorInput calculatorinput)
{
if (!ValidateInput(calculatorinput))
{
return;
}
var input = InputHistory.LastOrDefault();
if (input is CalculatorOperator && calculatorinput is CalculatorOperator)
{
InputHistory.RemoveAt(InputHistory.Count - 1);
InputHistory.Add(calculatorinput);
FireChange("Input");
return;
}
if ((input == null || input is CalculatorOperator) && calculatorinput.Value == ".")
{
InputHistory.Add(InputButtons.FirstOrDefault(b => b.Value == "0"));
InputHistory.Add(calculatorinput);
}
else
{
InputHistory.Add(calculatorinput);
}
CurrentInput = Input.Replace(" ", "").Split(OperatorButtons.Select(b => b.Value).ToArray(), StringSplitOptions.RemoveEmptyEntries).Where(s => !string.IsNullOrEmpty(s)).LastOrDefault();
FireChange("Input");
if (calculatorinput is CalculatorOperator)
{
CurrentOperator = calculatorinput as CalculatorOperator;
Calculate();
}
}
internal bool ValidateInput(ICalculatorInput calculatorinput)
{
if (calculatorinput == null)
{
return(false);
}
var input = InputHistory.LastOrDefault();
if (input == null && double.Parse(Result) == 0)
{
return(calculatorinput is CalculatorValue || calculatorinput == null);
}
if (input is CalculatorOperator && ((CalculatorOperator)input).OperatorType == OperatorTypes.Divide)
{
return(!(calculatorinput.Value == "0"));
}
var last = Input.Replace(" ", "").Split(OperatorButtons.Select(o => o.Value).ToArray(), StringSplitOptions.RemoveEmptyEntries).LastOrDefault();
if ((last == "0." || last == "0") && (calculatorinput is CalculatorOperator && ((CalculatorOperator)calculatorinput).OperatorType == OperatorTypes.Equals))
{
return(false);
}
if ((calculatorinput.Value == "." || calculatorinput.Value == "0.") && last != null && last.Contains(".") && !(input is CalculatorOperator))
{
return(false);
}
return(true);
}
public CalculatorDistributor ( )
{
this.outputting = new ConsoleOut();
this.inputting = new ConsoleIn();
}
public CalculatorDistributor (ICalculatorOutput outputDirection)
{
this.outputting = outputDirection;
this.inputting = new ConsoleIn();
}
public CalculatorDistributor (ICalculatorOutput outputDirection, ICalculatorInput inputDirection)
{
this.outputting = outputDirection;
this.inputting = inputDirection;
}
public void Input(ICalculatorInput input)
{
input.ApplyTo(_register);
}
