/// <summary>
/// Initializes a new instance of the <see cref="T:FormsPinView.PCL.PinViewModel"/> class.
/// </summary>
public PinViewModel()
{
KeyPressCommand = new Command <string>(arg =>
{
if (arg == "Backspace")
{
if (EnteredPin.Count > 0)
{
EnteredPin.RemoveAt(EnteredPin.Count - 1);
DisplayedTextUpdated?.Invoke(this, EventArgs.Empty);
}
}
else if (arg == "Clear")
{
if (EnteredPin.Count > 0)
{
_enteredPin = new List <char>();
DisplayedTextUpdated?.Invoke(this, EventArgs.Empty);
}
}
else if (EnteredPin.Count < TargetPinLength)
{
EnteredPin.Add(arg[0]);
if (EnteredPin.Count == TargetPinLength)
{
var pass = new string(EnteredPin.ToArray());
if (ValidatorFunc.Invoke(pass))
{
Success?.Invoke(this, new PinEventArgs()
{
EnteredPin = pass
});
EnteredPin.Clear();
DisplayedTextUpdated?.Invoke(this, EventArgs.Empty);
}
else
{
EnteredPin.Clear();
Error?.Invoke(this, EventArgs.Empty);
DisplayedTextUpdated?.Invoke(this, EventArgs.Empty);
}
}
else
{
DisplayedTextUpdated?.Invoke(this, EventArgs.Empty);
}
}
});
}
public PinViewModel()
{
KeyPressCommand = new Command <string>(arg =>
{
var v = CrossVibrate.Current;
v.Vibration(TimeSpan.FromMilliseconds(100));
if (arg == "Backspace")
{
if (EnteredPin.Count > 0)
{
EnteredPin.RemoveAt(EnteredPin.Count - 1);
DisplayedTextUpdated?.Invoke(this, EventArgs.Empty);
}
}
else if (EnteredPin.Count < TargetPinLength)
{
EnteredPin.Add(arg[0]);
if (EnteredPin.Count == TargetPinLength)
{
if (ValidatorFunc.Invoke(EnteredPin))
{
EnteredPin.Clear();
Success?.Invoke(this, EventArgs.Empty);
DisplayedTextUpdated?.Invoke(this, EventArgs.Empty);
}
else
{
EnteredPin.Clear();
Error?.Invoke(this, EventArgs.Empty);
DisplayedTextUpdated?.Invoke(this, EventArgs.Empty);
}
}
else
{
DisplayedTextUpdated?.Invoke(this, EventArgs.Empty);
}
}
});
}
/// <summary>
/// Updates the displayed PIN icons.
/// </summary>
protected void UpdateDisplayedText(bool resetUI)
{
if (PinLength <= 0)
{
// not expected to happen
throw new InvalidOperationException($"{PinLengthProperty.PropertyName} property" +
$" is not a positive value but {PinLength}");
}
if (resetUI || _circlesStackLayout.Children.Count == 0)
{
_circlesStackLayout.Children.Clear();
for (int i = 0; i < PinLength; ++i)
{
_circlesStackLayout.Children.Add(new CircleView
{
HeightRequest = 28,
WidthRequest = 28,
MinimumWidthRequest = 28,
MinimumHeightRequest = 28,
Color = Color
});
}
}
if (EnteredPin != null)
{
for (int i = 0; i < EnteredPin.Count; ++i)
{
(_circlesStackLayout.Children[i] as CircleView).IsFilledUp = true;
}
for (int i = EnteredPin.Count; i < PinLength; ++i)
{
(_circlesStackLayout.Children[i] as CircleView).IsFilledUp = false;
}
}
DisplayedTextUpdated?.Invoke(this, EventArgs.Empty);
}
/// <summary>
/// Initializes a new instance of the <see cref="T:FormsPinView.PCL.PinViewModel"/> class.
/// </summary>
public PinViewModel()
{
KeyPressCommand = new Command<string>(arg =>
{
if (arg == "Backspace")
{
if (EnteredPin.Count > 0)
{
EnteredPin.RemoveAt(EnteredPin.Count - 1);
DisplayedTextUpdated?.Invoke(this, EventArgs.Empty);
}
}
else if (EnteredPin.Count < TargetPinLength)
{
EnteredPin.Add(arg[0]);
if (EnteredPin.Count == TargetPinLength)
{
if (ValidatorFunc.Invoke(EnteredPin))
{
EnteredPin.Clear();
Success?.Invoke(this, EventArgs.Empty);
DisplayedTextUpdated?.Invoke(this, EventArgs.Empty);
}
else
{
EnteredPin.Clear();
Error?.Invoke(this, EventArgs.Empty);
DisplayedTextUpdated?.Invoke(this, EventArgs.Empty);
}
}
else
{
DisplayedTextUpdated?.Invoke(this, EventArgs.Empty);
}
}
});
}