public IEnumerable <IQuerySuggestion> Compute(SuggestionState state)
{
var expected = state.Expected.Find(item =>
item.RuleIndices[0] == QueryParser.RULE_factor && (
item.Tokens.Contains(QueryLexer.STRING) ||
item.Tokens.Contains(QueryLexer.INT) ||
item.Tokens.Contains(QueryLexer.REAL)
));
// only suggest attribute values in an expression factor
if (expected == null)
{
return(Enumerable.Empty <IQuerySuggestion>());
}
var parts = state.Caret.SplitParent();
if (parts.Suffix.Length > 0 && (
parts.Suffix[parts.Suffix.Length - 1] == '\n' ||
parts.Suffix[parts.Suffix.Length - 1] == '\r'))
{
parts.Suffix = parts.Suffix.Substring(0, parts.Suffix.Length - 1);
}
return(_listener.AttributeNames
.SelectMany(name => _attributeCache.GetValues(name))
.Where(item => ContainsPrefixSuffix(item, parts.Prefix, parts.Suffix))
.Select(item => new ValueSuggestion(state.Caret, item)));
}
private async void View_BeginValueEdit(object sender, NameEventArgs e)
{
// reset suggestions
View.Suggestions = new List <Suggestion>();
var suggestions = await Task.Run(() =>
{
var items = new List <Suggestion>();
foreach (var value in _attributeCache.GetValues(e.Value))
{
items.Add(new Suggestion(value.ToString(), value.Type.ToString(), value));
}
return(items);
});
if (_isDisposed)
{
return;
}
View.Suggestions = suggestions;
}