private void SignupForTextChanges(DocumentId documentId, SourceTextContainer textContainer, bool isCurrentContext, Action<Workspace, DocumentId, SourceText, PreservationMode> onChangedHandler)
{
var tracker = new TextTracker(this, documentId, textContainer, onChangedHandler);
_textTrackers.Add(documentId, tracker);
this.UpdateCurrentContextMapping_NoLock(textContainer, documentId, isCurrentContext);
tracker.Connect();
}
protected internal void OnDocumentOpened(DocumentId documentId, SourceTextContainer textContainer, bool isCurrentContext = true)
{
CheckDocumentIsInCurrentSolution(documentId);
CheckDocumentIsClosed(documentId);
using (this.serializationLock.DisposableWait())
{
var oldSolution = this.CurrentSolution;
var oldDocument = oldSolution.GetDocument(documentId);
var oldText = oldDocument.GetTextAsync(CancellationToken.None).WaitAndGetResult(CancellationToken.None);
using (this.stateLock.DisposableWrite())
{
var openDocuments = GetProjectOpenDocuments_NoLock(documentId.ProjectId);
if (openDocuments != null)
{
openDocuments.Add(documentId);
}
else
{
this.projectToOpenDocumentsMap.Add(documentId.ProjectId, new HashSet <DocumentId> {
documentId
});
}
}
// keep open document text alive by using PreserveIdentity
var newText = textContainer.CurrentText;
var currentSolution = oldSolution;
if (oldText != newText)
{
if (oldText.ContentEquals(newText))
{
// if the supplied text is the same as the previous text, then add with same version
var version = oldDocument.GetTextVersionAsync(CancellationToken.None).WaitAndGetResult(CancellationToken.None);
var newTextAndVersion = TextAndVersion.Create(newText, version, oldDocument.FilePath);
currentSolution = oldSolution.WithDocumentText(documentId, newTextAndVersion, PreservationMode.PreserveIdentity);
}
else
{
currentSolution = oldSolution.WithDocumentText(documentId, newText, PreservationMode.PreserveIdentity);
}
}
var newSolution = this.SetCurrentSolution(currentSolution);
var tracker = new TextTracker(this, documentId, textContainer);
this.textTrackers.Add(documentId, tracker);
this.AddTextToDocumentIdMapping_NoLock(textContainer, documentId, isCurrentContext);
tracker.Connect();
var newDoc = newSolution.GetDocument(documentId);
this.OnDocumentTextChanged(newDoc);
this.RaiseWorkspaceChangedEventAsync(WorkspaceChangeKind.DocumentChanged, oldSolution, newSolution, documentId: documentId);
var tsk = this.RaiseDocumentOpenedEventAsync(newDoc); // don't await this
}
// register outside of lock since it may call user code.
this.RegisterText(textContainer);
}