public KeyCorrectness EvaluateKeyUp(IHardwareKeyMappingTarget pressedKey)
{
var sequenceChanged = false;
var currentIndex = _pressedSequence.Count; // Index of the current press in the list (after it's added)
var isCorrectKey = EvaluateCorrectness(pressedKey);
KeyCorrectness correctness;
if (isCorrectKey)
{
_pressedSequence.Add(pressedKey);
SetCorrectness(currentIndex, true);
sequenceChanged = true;
correctness = KeyCorrectness.Correct;
}
else
{
var isBackspace =
pressedKey.HardwareKey == HardwareKey.Backspace &&
pressedKey.Modifiers == Modifier.None;
var isOtherKeyPressedPreviously = PressedSequence.Count > 0;
var isBackspaceToDeleteLastEntry = isBackspace && isOtherKeyPressedPreviously;
if (isBackspaceToDeleteLastEntry && AllowCorrections)
{
var indexToRemove = _pressedSequence.Count - 1;
SetCorrectness(indexToRemove, true);
correctness = KeyCorrectness.Indeterminate;
_pressedSequence.RemoveAt(indexToRemove);
sequenceChanged = true;
}
else
{
// Special case: if only modifier keys are pressed, ignore it and don't count it as a wrong input
var onlyModifiers = pressedKey.HardwareKey.IsModifier();
if (!onlyModifiers)
{
// Add it (wrong input input...)
_pressedSequence.Add(pressedKey);
SetCorrectness(currentIndex, false);
sequenceChanged = true;
correctness = KeyCorrectness.Wrong;
}
else
{
correctness = KeyCorrectness.Indeterminate;
}
}
}
if (sequenceChanged)
{
PressedSequenceChanged?.Invoke(this);
}
return(correctness);
}
private bool EvaluateCorrectness(IHardwareKeyMappingTarget pressedKey)
{
var isCorrect = pressedKey.Equals(NextExpectedMappingTarget);
return(isCorrect);
}
