private async void TextAreaTextEntered(object sender, TextCompositionEventArgs e)
{
recommendationCancellation.Cancel();
if (WorkspaceService == null || DocumentFile == null)
{
return;
}
recommendationCancellation = new CancellationTokenSource();
var cancellationToken = recommendationCancellation.Token;
try
{
await updateTextTask; // Wait for a pending UpdateText before calling GetRecommendedSymbolsAsync.
cancellationToken.ThrowIfCancellationRequested();
if (completionWindow == null && (e.Text == "." || IsAllowedLanguageLetter(e.Text[0])))
{
var position = CaretOffset;
var word = GetWord(position);
var symbols = await WorkspaceService.GetRecommendedSymbolsAsync(DocumentFile, position, cancellationToken);
cancellationToken.ThrowIfCancellationRequested();
var symbolGroups = symbols.GroupBy(x => x.Name).ToArray();
if (symbolGroups.Any())
{
using (new PerformanceTrace("CompletionWindow.Show", DocumentFile))
{
completionWindow = new CompletionWindow(TextArea)
{
WindowStyle = WindowStyle.None,
AllowsTransparency = true
};
completionWindow.MaxWidth = completionWindow.Width = 340;
completionWindow.MaxHeight = completionWindow.Height = 206;
foreach (var symbolGroup in symbolGroups)
{
completionWindow.CompletionList.CompletionData.Add(new CodeCompletionData(symbolGroup.Key, symbolGroup.ToArray()));
}
if (IsAllowedLanguageLetter(e.Text[0]))
{
completionWindow.StartOffset = word.Item1;
completionWindow.CompletionList.SelectItem(word.Item2);
}
completionWindow.Show();
completionWindow.Closed += (s2, e2) => completionWindow = null;
}
}
}
}
catch (OperationCanceledException)
{
}
}