/// <summary>
/// KeyUp Event
/// </summary>
/// <param name="e">KeyEventArgs</param>
protected override void OnPreviewKeyUp(KeyEventArgs e)
{
base.OnPreviewKeyUp(e);
SetWordAtPointer();
SetLastWord();
KeyColourRun();
if ((_isAssistPredictOn == false) && (e.Key == Key.Space)) //need to know key is space so call in KeyUp
{
//save variable names, we for now will just add if last word has $ at the front
if (_haveVariable)
{
if (!_variableNames.Contains(_lastWord))
{
_variableNames.Add(_lastWord);
}
_predictKeyWord = "$";
}
else
{
_predictKeyWord = _lastWord;//see what word we need to predict
}
var trigger = PredictTriggers.Where(s => s.Key == _predictKeyWord);
if (trigger.Any())
{
FilterAssistBoxItemsPredict((e.Key == Key.Space));
return;
}
}
if ((_isAssistKeyWordOn == false) && ((_isAssistPredictOn == false) || _haveVariable) && !string.IsNullOrEmpty(_lastWord) && (e.Key != Key.Space))
{
IEnumerable <string> match;
if (_haveVariable)
{
match = _variableNames.Where(s => s.ToUpper().StartsWith(_lastWord.ToUpper()));
}
else
{
match = KeyWordSource.Where(s => s.ToUpper().StartsWith(_lastWord.ToUpper()));
}
if (match.Any())
{
FilterAssistBoxItemsKeyWord((e.Key == Key.Space));
return;
}
}
if (_isAssistKeyWordOn)
{
FilterAssistBoxItemsKeyWord((e.Key == Key.Space));
}
else if (_isAssistPredictOn)
{
FilterAssistBoxItemsPredict((e.Key == Key.Space));
}
}
/// <summary>
/// Controller for the Predict list control
/// </summary>
/// <param name="haveSpace">bool</param>
private void FilterAssistBoxItemsPredict(bool haveSpace)
{
#if DEBUG
//Debug.Print("LastWord in FilterAssistBoxItemsPredict= {0}", _lastWord);
#endif
string srchLastWord = string.Empty;
if (haveSpace) //takes care of backspacing back to a space to display options
{
_predictKeyWord = _lastWord;
_lastWord = string.Empty;
}
else
{
srchLastWord = _lastWord;
}
IEnumerable <string> displayItems = PredictTriggers.Where(s => s.Key.ToUpper() == _predictKeyWord).SelectMany(s => s.Value).Where(s => s.ToUpper().StartsWith(srchLastWord) && (s.ToUpper() != _lastWord.ToUpper()) && (s.ToUpper() != _wordAtPointer)).OrderBy(s => s);
List <string> sortedItems = displayItems.ToList();
sortedItems.Sort();
_assistListBox.ItemsSource = sortedItems; _assistListBox.ItemsSource = displayItems;
_assistListBox.SelectedIndex = 0;
if (displayItems.Count() == 0)
{
_assistListBox.Visibility = Visibility.Collapsed;
_isAssistPredictOn = false;
//OK no longer a predict so see if a keyword
FilterAssistBoxItemsKeyWord(haveSpace);
}
else if (_assistListBox.Visibility != Visibility.Visible)
{
_isAssistPredictOn = true;
_isAssistKeyWordOn = false; //override keyword if on
ResetAssistListBoxLocation(); //set list box position
_assistListBox.Visibility = Visibility.Visible;
}
}