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)); }