IWordCompletionSession IWordCompletionSessionFactoryService.CreateWordCompletionSession(ITextView textView, SnapshotSpan wordSpan, IEnumerable <string> wordCollection, bool isForward)
{
var completionData = new CompletionData(
wordSpan,
new ReadOnlyCollection <string>(wordCollection.ToList()));
textView.Properties[_completionDataKey] = completionData;
try
{
// 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(new DismissedWordCompletionSession(textView));
}
// Now move the word completion set to the fron
var wordCompletionSet = completionSession.CompletionSets.OfType <WordCompletionSet>().FirstOrDefault();
if (wordCompletionSet == null)
{
wordCompletionSet = new WordCompletionSet();
}
completionSession.SelectedCompletionSet = wordCompletionSet;
var intellisenseSessionStack = _intellisenseSessionStackMapService.GetStackForTextView(textView);
var wordTrackingSpan = wordSpan.Snapshot.CreateTrackingSpan(wordSpan.Span, SpanTrackingMode.EdgeInclusive);
var wordCompletionSession = new WordCompletionSession(
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);
RaiseCompleted(wordCompletionSession);
return(wordCompletionSession);
}
finally
{
textView.Properties.RemoveProperty(_completionDataKey);
}
}
IWordCompletionSession IWordCompletionSessionFactoryService.CreateWordCompletionSession(ITextView textView, SnapshotSpan wordSpan, IEnumerable<string> wordCollection, bool isForward)
{
var completionData = new CompletionData(
wordSpan,
new ReadOnlyCollection<string>(wordCollection.ToList()));
textView.Properties[_completionDataKey] = completionData;
try
{
// 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 new DismissedWordCompletionSession(textView);
}
// Now move the word completion set to the fron
var wordCompletionSet = completionSession.CompletionSets.OfType<WordCompletionSet>().FirstOrDefault();
if (wordCompletionSet == null)
{
wordCompletionSet = new WordCompletionSet();
}
completionSession.SelectedCompletionSet = wordCompletionSet;
var intellisenseSessionStack = _intellisenseSessionStackMapService.GetStackForTextView(textView);
var wordTrackingSpan = wordSpan.Snapshot.CreateTrackingSpan(wordSpan.Span, SpanTrackingMode.EdgeInclusive);
var wordCompletionSession = new WordCompletionSession(
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);
return wordCompletionSession;
}
finally
{
textView.Properties.RemoveProperty(_completionDataKey);
}
}