private void ButtonPress(CalculatorKeys parameter)
{
if (!string.IsNullOrEmpty(ExpressionString))
{
switch (parameter)
{
case CalculatorKeys.Equal:
EqualClicked();
return;
case CalculatorKeys.Clear:
ClearClicked();
return;
case CalculatorKeys.ClearEntry:
ClearEntryClicked();
return;
}
}
if (!string.IsNullOrEmpty(parameter.GetText()))
{
ExpressionString = ExpressionString.Insert(CurrentCursorPosition, parameter.GetText());
CurrentCursorPosition += 1;
}
}
public static string GetText(this CalculatorKeys key)
{
switch (key)
{
case CalculatorKeys.Zero:
case CalculatorKeys.One:
case CalculatorKeys.Two:
case CalculatorKeys.Three:
case CalculatorKeys.Four:
case CalculatorKeys.Five:
case CalculatorKeys.Six:
case CalculatorKeys.Seven:
case CalculatorKeys.Eight:
case CalculatorKeys.Nine:
return(((int)key).ToString());
case CalculatorKeys.Plus:
return("+");
case CalculatorKeys.Minus:
return("-");
case CalculatorKeys.Multiply:
return("*");
case CalculatorKeys.Divide:
return("/");
case CalculatorKeys.Point:
return(".");
case CalculatorKeys.LeftBracket:
return("(");
case CalculatorKeys.RightBracket:
return(")");
default:
return(null);
}
}
public static bool IsNumber(this CalculatorKeys key)
{
return(NumberKeys.Contains(key));
}
public static bool IsOperationKey(this CalculatorKeys key)
{
return(OperationKeys.Contains(key));
}
