private void Reset()
{
onConsoleOutput = "0";
lastKey = LastKey.Digit;
operandSwitch = OperandSwitch.OperandA;
lastKeyValue = '0';
lastOperator = '#';
}
public string SendKeyPress(char key)
{
switch (key)
{
case var tempKey when(tempKey >= '0' && tempKey <= '9'):
if (operandSwitch == OperandSwitch.OperandA)
{
if (lastKey == LastKey.Digit)
{
if (onConsoleOutput == "0")
{
onConsoleOutput = key.ToString();
}
else
{
onConsoleOutput = onConsoleOutput + key.ToString();
}
operandA = onConsoleOutput;
}
}
else if (operandSwitch == OperandSwitch.OperandB)
{
if (lastKey == LastKey.Operator)
{
onConsoleOutput = key.ToString();
}
else if (lastKey == LastKey.Digit)
{
if (onConsoleOutput == "0")
{
onConsoleOutput = key.ToString();
}
else
{
onConsoleOutput = onConsoleOutput + key.ToString();
}
}
operandB = onConsoleOutput;
}
lastKeyValue = key;
lastKey = LastKey.Digit;
break;
case var tempKey when(tempKey == '+' || tempKey == '-' || tempKey == '/' || tempKey.ToString().ToLower() == "x"):
if (operandSwitch == OperandSwitch.OperandA)
{
operandSwitch = OperandSwitch.OperandB;
lastKey = LastKey.Operator;
lastOperator = tempKey;
return(onConsoleOutput);
}
Result();
lastOperator = tempKey;
lastKey = LastKey.Operator;
operandA = onConsoleOutput;
if (operandSwitch == OperandSwitch.OperandA)
{
operandSwitch = OperandSwitch.OperandB;
}
break;
case var tempKey when(tempKey.ToString().ToLower() == "s"):
Toggle();
break;
case var tempKey when(tempKey.ToString().ToLower() == "c"):
Reset();
break;
case var tempKey when(tempKey == '='):
Result();
break;
case var tempKey when(tempKey == '.'):
HandleDecimals();
break;
}
return(onConsoleOutput);
}
