/*
* Retrieve the current predictions available for words/prefixed of 3 characters or more,
* The predictions are set on a Databound variable to be pushed to the UI
*/
private void GetCurrentPredictions()
{
// Don't predict unless we have three letters minimum
var tokens = GetInputTokens(_currentInput.ToString());
if (tokens.Length < 1 || tokens[tokens.Length - 1].Length < 3)
{
PredictiveWords.Clear();
SelectedPrediction = null;
return;
}
PredictiveWords.Clear();
var predictedWords = _predictiveDictionary.GetWordPredictions(tokens[tokens.Length - 1]);
if (predictedWords.Count > 0)
{
foreach (var word in predictedWords.Take(4))
{
PredictiveWords.Add(word);
}
SelectedPrediction = PredictiveWords.First();
}
else
{
SelectedPrediction = null;
}
_selectedPredictionIndex = 0;
OnPropertyChanged("SelectedPrediction");
OnPropertyChanged("PredictiveWords");
}
/*
* Confirm the currently selected prediction word and enter into the input text block
*/
private void SetSelectedWord()
{
var tokens = GetInputTokens(_currentInput.ToString());
var currentWord = tokens[tokens.Length - 1];
_currentInput.Remove(_currentInput.Length - currentWord.Length, currentWord.Length);
_currentInput.Append(SelectedPrediction);
PredictiveWords.Clear();
SelectedPrediction = null;
_selectedPredictionIndex = 0;
OnPropertyChanged("SelectedPrediction");
OnPropertyChanged("PredictiveWords");
}