internal FSharpOption <IWordCompletionSession> CreateWordCompletionSession(ITextView textView, SnapshotSpan wordSpan, IEnumerable <string> wordCollection, bool isForward)
{
// Dismiss any active ICompletionSession instances. It's possible and possibly common for
// normal intellisense to be active when the user invokes word completion. We want only word
// completion displayed at this point
_asyncCompletionBroker.GetSession(textView)?.Dismiss();
// Store the WordCompletionData inside the ITextView. The IAsyncCompletionSource implementation will
// asked to provide data for the creation of the IAsyncCompletionSession. Hence we must share through
// ITextView
var wordCompletionData = new VimWordCompletionData(
wordSpan,
new ReadOnlyCollection <string>(wordCollection.ToList()));
textView.SetWordCompletionData(wordCompletionData);
// Create a completion session at the start of the word. The actual session information will
// take care of mapping it to a specific span
var completionTrigger = new CompletionTrigger(CompletionTriggerReason.Insertion, wordSpan.Snapshot);
var asyncCompletionSession = _asyncCompletionBroker.TriggerCompletion(
textView,
completionTrigger,
wordSpan.Start,
CancellationToken.None);
// It's possible for the Start method to dismiss the ICompletionSession. This happens when there
// is an initialization error such as being unable to find a CompletionSet. If this occurs we
// just return the equivalent IWordCompletionSession (one which is dismissed)
if (asyncCompletionSession.IsDismissed)
{
return(FSharpOption <IWordCompletionSession> .None);
}
asyncCompletionSession.OpenOrUpdate(completionTrigger, wordSpan.Start, CancellationToken.None);
#if VS_SPECIFIC_2019
return(new WordAsyncCompletionSession(asyncCompletionSession, _vsEditorAdaptersFactoryService));
#elif VS_SPECIFIC_MAC
return(new WordAsyncCompletionSession(asyncCompletionSession));
#endif
}
internal FSharpOption <IWordCompletionSession> CreateWordCompletionSession(ITextView textView, SnapshotSpan wordSpan, IEnumerable <string> wordCollection, bool isForward)
{
var completionData = new VimWordCompletionData(
wordSpan,
new ReadOnlyCollection <string>(wordCollection.ToList()));
textView.SetWordCompletionData(completionData);
// Dismiss any active ICompletionSession instances. It's possible and possibly common for
// normal intellisense to be active when the user invokes word completion. We want only word
// completion displayed at this point
foreach (var existingCompletionSession in _completionBroker.GetSessions(textView))
{
existingCompletionSession.Dismiss();
}
// Create a completion session at the start of the word. The actual session information will
// take care of mapping it to a specific span
var trackingPoint = textView.TextSnapshot.CreateTrackingPoint(wordSpan.Start, PointTrackingMode.Positive);
var completionSession = _completionBroker.CreateCompletionSession(textView, trackingPoint, true);
completionSession.Properties[WordCompletionSessionKey] = WordCompletionSessionKey;
// Start the completion. This will cause it to get populated at which point we can go about
// filtering the data
completionSession.Start();
// It's possible for the Start method to dismiss the ICompletionSession. This happens when there
// is an initialization error such as being unable to find a CompletionSet. If this occurs we
// just return the equivalent IWordCompletionSession (one which is dismissed)
if (completionSession.IsDismissed)
{
return(FSharpOption <IWordCompletionSession> .None);
}
// Now move the word completion set to the fron
var wordCompletionSet = completionSession.CompletionSets.OfType <WordLegacyCompletionSet>().FirstOrDefault();
if (wordCompletionSet == null)
{
wordCompletionSet = new WordLegacyCompletionSet();
}
completionSession.SelectedCompletionSet = wordCompletionSet;
var intellisenseSessionStack = _intellisenseSessionStackMapService.GetStackForTextView(textView);
var wordTrackingSpan = wordSpan.Snapshot.CreateTrackingSpan(wordSpan.Span, SpanTrackingMode.EdgeInclusive);
var wordCompletionSession = new WordLegacyCompletionSession(
wordTrackingSpan,
intellisenseSessionStack,
completionSession,
wordCompletionSet);
// Ensure the correct item is selected and committed to the ITextBuffer. If this is a forward completion
// then we select the first item, else the last. Sending the command will go ahead and insert the
// completion in the given span
var command = isForward ? IntellisenseKeyboardCommand.TopLine : IntellisenseKeyboardCommand.BottomLine;
wordCompletionSession.SendCommand(command);
// For reasons I don't understand, if the command is 'bottom
// line', it doesn't seem to take effect on the first try.
wordCompletionSession.SendCommand(command);
return(FSharpOption <IWordCompletionSession> .Some(wordCompletionSession));
}
