/// <summary>
/// Parse the input and calculated the result based on expression
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
private static double CalculateExpression(string input)
{
ExpressionCalculator exc = new ExpressionCalculator();
return(exc.GetResult(input));
}
public MainViewModel()
{
Calculator = new ExpressionCalculator();
CalculateCommand = new Command {
CanExecuteFunc = obj => true, ExecuteFunc = CalculateActionFunc
};
CopyCommand = new Command {
CanExecuteFunc = obj => true, ExecuteFunc = CopyActionFunc
};
ClearCommand = new Command {
CanExecuteFunc = obj => true, ExecuteFunc = ClearActionFunc
};
CloseCommand = new Command {
CanExecuteFunc = obj => true, ExecuteFunc = CloseActionFunc
};
//KeyboardCommands
SquareCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"({Calculation})^2"
};
SquareRootCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"Sqrt({Calculation})"
};
PiCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}{Math.PI}"
};
FacultyCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}!"
};
OpenParenthesisCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}("
};
PowCommand = new Command {
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}^"
};
SevenCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}7"
};
FourCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}4"
};
OneCommand = new Command {
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}1"
};
CloseParenthesisCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation})"
};
SinCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"Sin({Calculation})"
};
EightCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}8"
};
FiveCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}5"
};
TwoCommand = new Command {
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}2"
};
ZeroCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}0"
};
CosCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"Cos({Calculation})"
};
NineCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}9"
};
SixCommand = new Command {
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}6"
};
ThreeCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}3"
};
PointCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}."
};
TanCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"Tan({Calculation})"
};
DivideCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}/"
};
MultiplyCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}*"
};
MinusCommand = new Command
{
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}-"
};
AddCommand = new Command {
CanExecuteFunc = obj => true, ExecuteFunc = p => Calculation = $"{Calculation}+"
};
ShowKeyboard = true;
}