private void OnTextDocumentDisposed(object sender, TextDocumentEventArgs e)
{
FrugalList <PersistentSpan> spans;
lock (_spansOnDocuments)
{
if (_spansOnDocuments.TryGetValue(e.TextDocument, out spans))
{
foreach (var span in spans)
{
span.DocumentClosed();
}
_spansOnDocuments.Remove(e.TextDocument);
var path = new FileNameKey(e.TextDocument.FilePath);
FrugalList <PersistentSpan> existingSpansOnPath;
if (_spansOnDocuments.TryGetValue(path, out existingSpansOnPath))
{
//Handle (badly) the case where a document is renamed to an existing closed document & then closed.
existingSpansOnPath.AddRange(spans);
}
else
{
_spansOnDocuments.Add(path, spans);
}
}
}
}
internal PersistentSpanSet(FileNameKey filePath, ITextDocument document, PersistentSpanFactory factory)
{
this.FileKey = filePath;
this.Document = document;
this.Factory = factory;
if (document != null)
{
document.FileActionOccurred += this.OnFileActionOccurred;
}
}
private void OnFileActionOccurred(object sender, TextDocumentFileActionEventArgs e)
{
if (e.FileActionType == FileActionTypes.ContentSavedToDisk)
{
_savedSnapshot = this.Document.TextBuffer.CurrentSnapshot;
}
else if (e.FileActionType == FileActionTypes.DocumentRenamed)
{
this.FileKey = new FileNameKey(this.Document.FilePath);
this.Factory.DocumentRenamed(this);
}
}
public IPersistentSpan Create(string filePath, Span span, SpanTrackingMode trackingMode)
{
Requires.NotNullOrEmpty(filePath, nameof(filePath));
Requires.Range(((int)trackingMode >= (int)SpanTrackingMode.EdgeExclusive) || ((int)trackingMode <= (int)(SpanTrackingMode.EdgeNegative)), nameof(trackingMode));
var key = new FileNameKey(filePath);
lock (_spansOnDocuments)
{
var spanSet = this.GetOrCreateSpanSet(key, null);
return(spanSet.Create(span, trackingMode));
}
}
internal void DocumentClosed()
{
Assumes.NotNull(this.Document);
this.FileKey = new FileNameKey(this.Document.FilePath);
foreach (var s in this.Spans)
{
s.DocumentClosed(_savedSnapshot);
}
this.Document.FileActionOccurred -= this.OnFileActionOccurred;
this.Document = null;
}
private void OnTextDocumentCreated(object sender, TextDocumentEventArgs e)
{
var path = new FileNameKey(e.TextDocument.FilePath);
lock (_spansOnDocuments)
{
if (_spansOnDocuments.TryGetValue(path, out PersistentSpanSet spanSet))
{
spanSet.DocumentReopened(e.TextDocument);
_spansOnDocuments.Remove(path);
_spansOnDocuments.Add(e.TextDocument, spanSet);
}
}
}
public IPersistentSpan Create(string filePath, int startLine, int startIndex, int endLine, int endIndex, SpanTrackingMode trackingMode)
{
Requires.NotNullOrEmpty(filePath, nameof(filePath));
Requires.Argument(startLine >= 0, nameof(startLine), "Must be non-negative.");
Requires.Argument(startIndex >= 0, nameof(startIndex), "Must be non-negative.");
Requires.Argument(endLine >= startLine, nameof(endLine), "Must be >= startLine.");
Requires.Argument((endIndex >= 0) && ((startLine != endLine) || (endIndex >= startIndex)), nameof(endIndex), "Must be non-negative and (endLine,endIndex) may not be before (startLine,startIndex).");
Requires.Range(((int)trackingMode >= (int)SpanTrackingMode.EdgeExclusive) || ((int)trackingMode <= (int)(SpanTrackingMode.EdgeNegative)), nameof(trackingMode));
var key = new FileNameKey(filePath);
lock (_spansOnDocuments)
{
var spanSet = this.GetOrCreateSpanSet(key, null);
return(spanSet.Create(startLine, startIndex, endLine, endIndex, trackingMode));
}
}
internal void Delete(PersistentSpan span)
{
lock (_spansOnDocuments)
{
ITextDocument document = span.Document;
if (document != null)
{
FrugalList <PersistentSpan> spans;
if (_spansOnDocuments.TryGetValue(document, out spans))
{
spans.Remove(span);
if (spans.Count == 0)
{
//Last one ... remove all references to document.
_spansOnDocuments.Remove(document);
}
}
else
{
Debug.Fail("There should have been an entry in SpanOnDocuments.");
}
}
else
{
var path = new FileNameKey(span.FilePath);
FrugalList <PersistentSpan> spans;
if (_spansOnDocuments.TryGetValue(path, out spans))
{
spans.Remove(span);
if (spans.Count == 0)
{
//Last one ... remove all references to path.
_spansOnDocuments.Remove(path);
}
}
else
{
Debug.Fail("There should have been an entry in SpanOnDocuments.");
}
}
}
}
private void OnTextDocumentCreated(object sender, TextDocumentEventArgs e)
{
var path = new FileNameKey(e.TextDocument.FilePath);
FrugalList <PersistentSpan> spans;
lock (_spansOnDocuments)
{
if (_spansOnDocuments.TryGetValue(path, out spans))
{
foreach (var span in spans)
{
span.DocumentReopened(e.TextDocument);
}
_spansOnDocuments.Remove(path);
_spansOnDocuments.Add(e.TextDocument, spans);
}
}
}
} //For unit tests
private PersistentSpanSet GetOrCreateSpanSet(FileNameKey filePath, ITextDocument document)
{
object key = ((object)document) ?? filePath;
if (!_spansOnDocuments.TryGetValue(key, out PersistentSpanSet spanSet))
{
if (!_eventsHooked)
{
_eventsHooked = true;
this.TextDocumentFactoryService.TextDocumentCreated += OnTextDocumentCreated;
this.TextDocumentFactoryService.TextDocumentDisposed += OnTextDocumentDisposed;
}
spanSet = new PersistentSpanSet(filePath, document, this);
_spansOnDocuments.Add(key, spanSet);
}
return(spanSet);
}
