public override View GetView(int position, View convertView, ViewGroup parent)
{
Button button = null;
CalculatorButton calculatorButton = CalculatorButtons.All [position];
if (convertView != null)
{
button = (Button)convertView;
}
else
{
button = new Button(context);
}
if (calculatorButton.Text != null)
{
button.Text = calculatorButton.Text;
button.Click += (sender, e) => onKeyPressed(calculatorButton.Key);
}
else
{
button.Visibility = ViewStates.Invisible;
}
return(button);
}
public bool AllClear()
{
this.inputText = "0";
this.lastActionButton = CalculatorButton.Plus;
this.lastInputValue = 0;
this.Value = 0;
return(true);
}
private bool PerformEquals()
{
this.ParseInput();
this.PerformPendingOperation();
this.lastActionButton = CalculatorButton.Plus;
this.inputText = "";
this.KeyboardToggled = false;
return(true);
}
public static void Main()
{
Program prg = new Program();
CalculatorButton calcBtn = new CalculatorButton();
calcBtn.Clicked += new ClickHandler(prg.CalculatorBtnClicked);
calcBtn.Clicked += prg.CalculatorBtnClicked;
calcBtn.SimulateClick();
Console.ReadKey();
}
public static void Main()
{
CalculatorButton calcBtn = new CalculatorButton();
calcBtn.Clicked += (object sender, ClickEventArgs e) =>
{
Console.WriteLine(
$"Caller is a CalculatorButton: {sender is CalculatorButton} and is named {e.Name}");
};
calcBtn.SimulateClick();
Console.ReadKey();
}
public override UICollectionViewCell GetCell(UICollectionView collectionView, Foundation.NSIndexPath indexPath)
{
var cell = (CalculatorButtonCell)collectionView.DequeueReusableCell(CalculatorButtonCell.Id, indexPath);
CalculatorButton button = null;
nint index = (indexPath.Section * 4) + indexPath.Item;
if (index < CalculatorButtons.All.Length)
{
button = CalculatorButtons.All [index];
}
cell.Button = button;
cell.OnKeyPressed = onKeyPressed;
return(cell);
}
private void OnOperationButton(CalculatorButton calculatorButton)
{
if (calculatorButton is DigitalButton digitalButton)
{
SetInputNumber(digitalButton.Digital);
return;
}
if (calculatorButton is EqualOperation)
{
CalculateResult();
}
else
{
if (calculatorButton is DotButton dotButton)
{
SetDot(dotButton.Symbol);
}
else
{
SetInputOperation(calculatorButton as OperationButton);
}
}
}
public bool AllClear()
{
this.inputText = "0";
this.lastActionButton = CalculatorButton.Plus;
this.lastInputValue = 0;
this.Value = 0;
return true;
}
private bool PerformEquals()
{
this.ParseInput ();
this.PerformPendingOperation ();
this.lastActionButton = CalculatorButton.Plus;
this.inputText = "";
this.KeyboardToggled = false;
return true;
}
private void HandleButton(CalculatorButton button)
{
switch (button)
{
case CalculatorButton.Zero:
Pad.Zero();
break;
case CalculatorButton.One:
Pad.One();
break;
case CalculatorButton.Two:
Pad.Two();
break;
case CalculatorButton.Three:
Pad.Three();
break;
case CalculatorButton.Four:
Pad.Four();
break;
case CalculatorButton.Five:
Pad.Five();
break;
case CalculatorButton.Six:
Pad.Six();
break;
case CalculatorButton.Seven:
Pad.Seven();
break;
case CalculatorButton.Eight:
Pad.Eight();
break;
case CalculatorButton.Nine:
Pad.Nine();
break;
case CalculatorButton.Decimal:
Pad.Period();
break;
case CalculatorButton.Add:
Pad.Plus();
break;
case CalculatorButton.Subtract:
Pad.Minus();
break;
case CalculatorButton.Multiply:
Pad.Multiply();
break;
case CalculatorButton.Divide:
Pad.Divide();
break;
case CalculatorButton.Equals:
Pad.EqualsButton();
break;
case CalculatorButton.ChangeSign:
Pad.ChangeSign();
break;
default:
throw new ArgumentOutOfRangeException();
}
}
public CalculatorButtonPressEventArgs(CalculatorButton buttonPressed)
{
ButtonPressed = buttonPressed;
}
