/// <summary>
/// Augment the completion session with the provided set of words if this completion session is
/// being created for a word completion session
/// </summary>
void ICompletionSource.AugmentCompletionSession(ICompletionSession session, IList <CompletionSet> completionSets)
{
var textView = session.TextView;
// Only provide completion information for the ITextBuffer directly associated with the
// ITextView. In a projcetion secnario there will be several ITextBuffer instances associated
// with a given ITextView and we provide ICompletionSource values for all of them. We want to
// avoid creating duplicate completion information
if (textView.TextBuffer != _textBuffer)
{
return;
}
// Get out the collection of words. If none is present then there is no information to
// augment here
if (!textView.TryGetWordCompletionData(out var completionData))
{
return;
}
var trackingSpan = completionData.WordSpan.Snapshot.CreateTrackingSpan(
completionData.WordSpan.Span,
SpanTrackingMode.EdgeInclusive);
var completions = completionData.WordCollection.Select(word => new Completion(word));
var wordCompletionSet = new WordLegacyCompletionSet(trackingSpan, completions);
completionSets.Add(wordCompletionSet);
}
internal WordLegacyCompletionSession(ITrackingSpan wordTrackingSpan, IIntellisenseSessionStack intellisenseSessionStack, ICompletionSession completionSession, WordLegacyCompletionSet wordCompletionSet)
{
_textView = completionSession.TextView;
_wordTrackingSpan = wordTrackingSpan;
_wordCompletionSet = wordCompletionSet;
_completionSession = completionSession;
_completionSession.Dismissed += delegate { OnDismissed(); };
_intellisenseSessionStack = intellisenseSessionStack;
}
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));
}
