public void SubjectBuffersConnected(
ITextView textView,
ConnectionReason reason,
IReadOnlyCollection <ITextBuffer> subjectBuffers)
{
IntellisenseManager manager = textView.Properties.GetOrCreateSingletonProperty(
delegate { return(new IntellisenseManager(this, textView)); });
// Create the appropriate Intellisense controllers for the content types in the buffer graph. It's important that we do
// this after creating the brokers, as the controllers will most likely start using the brokers immediately.
for (int f = 0; f < this.IntellisenseControllerFactories.Count; ++f)
{
var factory = this.IntellisenseControllerFactories[f];
// filter subject buffers to get the ones that match the factory content types
FrugalList <ITextBuffer> matchingSubjectBuffers = new FrugalList <ITextBuffer>();
foreach (string factoryContentType in factory.Metadata.ContentTypes)
{
foreach (ITextBuffer subjectBuffer in subjectBuffers)
{
if (subjectBuffer.ContentType.IsOfType(factoryContentType) &&
!matchingSubjectBuffers.Contains(subjectBuffer))
{
matchingSubjectBuffers.Add(subjectBuffer);
}
}
}
if (matchingSubjectBuffers.Count > 0)
{
// This controller factory is registered for the content type we understand. Go ahead and create
// one. Note that this won't give us a handle to a controller object. We wouldn't be able to do anything
// with such a reference anyway.
if (manager.Controllers[f] == null)
{
manager.Controllers[f] = this.GuardedOperations.InstantiateExtension
(factory, factory,
provider => provider.TryCreateIntellisenseController(textView, matchingSubjectBuffers));
}
else
{
foreach (ITextBuffer matchingSubjectBuffer in matchingSubjectBuffers)
{
manager.Controllers[f].ConnectSubjectBuffer(matchingSubjectBuffer);
}
}
}
}
}
public IEnumerable <ITextBuffer> ResolveBuffersForCommand <TArgs>() where TArgs : EditorCommandArgs
{
var sourceSnapshotPoints = new FrugalList <SnapshotPoint>(new[] { _textView.Caret.Position.BufferPosition });
var resolvedBuffers = new FrugalList <ITextBuffer>();
for (int i = 0; i < sourceSnapshotPoints.Count; i++)
{
SnapshotPoint curSnapshotPoint = sourceSnapshotPoints[i];
if (curSnapshotPoint.Snapshot is IProjectionSnapshot curProjectionSnapshot)
{
sourceSnapshotPoints.AddRange(curProjectionSnapshot.MapToSourceSnapshots(curSnapshotPoint));
}
// As the set of buffers isn't likely to exceed 5, just use the list to determine whether we've seen it before
ITextBuffer curBuffer = curSnapshotPoint.Snapshot.TextBuffer;
if (!resolvedBuffers.Contains(curBuffer))
{
resolvedBuffers.Add(curBuffer);
}
}
return(resolvedBuffers);
}
