Add extra way to get the document view in inline completion

src/Extension/AssistantCompletion/ShortcutCompletionCommitManager.cs

@@ -97,16 +97,7 @@ private static void HandleSnippetNotFoundException(IWpfTextView? wpfTextView, Co
  var fileName = ThreadHelper.JoinableTaskFactory.Run(async () =>
  {
  await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
- DocumentView? doc;
- try
- {
- doc = wpfTextView.ToDocumentView();
- }
- catch
- {
- doc = ThreadHelper.JoinableTaskFactory.Run(async () => await VS.Documents.GetActiveDocumentViewAsync());
- }
-
+ var doc = EditorUtils.ToDocumentView(wpfTextView);
  return DocumentHelper.GetFileName(doc, wpfTextView);
  });
 

src/Extension/Caching/TextViewCreationListener.cs

@@ -34,21 +34,7 @@ internal sealed class TextViewCreationListener : IWpfTextViewCreationListener
  /// <param name="textView">The <see cref="IWpfTextView"/> upon which the adornment should be placed</param>
  public void TextViewCreated(IWpfTextView textView)
  {
- if (textView == null)
- return;
-
- DocumentView doc;
- try
- {
- doc = textView.ToDocumentView();
- }
- catch
- {
- doc = ThreadHelper.JoinableTaskFactory.Run(async () =>
- {
- return await VS.Documents.GetActiveDocumentViewAsync();
- });
- }
+ var doc = EditorUtils.ToDocumentView(textView);
 
  if (doc == null)
  return;

src/Extension/InlineCompletion/InlineCompletionClient.cs

@@ -110,7 +110,12 @@ public int Exec(ref Guid pguidCmdGroup, uint nCmdID, uint nCmdexecopt, IntPtr pv
  var triggeringLine = _wpfTextView.TextBuffer.CurrentSnapshot.GetLineFromPosition(caretPos);
  var triggeringLineText = triggeringLine.GetText();
  var lineTrackingSpan = _wpfTextView.TextBuffer.CurrentSnapshot.CreateTrackingSpan(triggeringLine.Extent.Span, SpanTrackingMode.EdgePositive);
- var language = LanguageUtils.ParseFromFileName(DocumentHelper.GetFileName(_wpfTextView.ToDocumentView(), _wpfTextView));
+
+ var doc = EditorUtils.ToDocumentView(_wpfTextView);
+ if (doc == null)
+ return _nextCommandHandler.Exec(ref pguidCmdGroup, nCmdID, nCmdexecopt, pvaIn, pvaOut);
+
+ var language = LanguageUtils.ParseFromFileName(DocumentHelper.GetFileName(doc, _wpfTextView));
 
  var shouldTriggerCompletion = char.IsWhiteSpace(typedChar)
  && EditorUtils.IsSemanticSearchComment(triggeringLineText, language)

src/Extension/InlineCompletion/TextViewCreationListener.cs

@@ -48,18 +48,7 @@ public TextViewCreationListener()
  /// <param name="textView">The <see cref="IWpfTextView"/> upon which the adornment should be placed</param>
  public void TextViewCreated(IWpfTextView textView)
  {
- if (textView == null)
- return;
-
- DocumentView? doc;
- try
- {
- doc = textView.ToDocumentView();
- }
- catch
- {
- doc = ThreadHelper.JoinableTaskFactory.Run(async () => await VS.Documents.GetActiveDocumentViewAsync());
- }
+ var doc = EditorUtils.ToDocumentView(textView);
 
  if (doc == null)
  return;

src/Extension/SnippetFormats/EditorUtils.cs

@@ -2,6 +2,8 @@
 using Microsoft.VisualStudio.Text.Editor;
 using Microsoft.VisualStudio.TextManager.Interop;
 using System.Linq;
+using Community.VisualStudio.Toolkit;
+using Microsoft.VisualStudio.Shell;
 using static Extension.SnippetFormats.LanguageUtils;
 
 namespace Extension.SnippetFormats
@@ -254,5 +256,26 @@ public static TextSpan GetLegacyCaretPosition(this CaretPosition caretPosition)
 
  return textSpan;
  }
+
+ /// <summary>
+ /// Converts the argument <see cref="IWpfTextView"/> to a <see cref="DocumentView"/>,
+ /// either directly, or by retrieving the currently active text and document views.
+ /// </summary>
+ /// <param name="textView">the text view to convert</param>
+ /// <returns>The DocumentView, or null if the argument IWpfTextView is null, or the DocumentView itself is null</returns>
+ public static DocumentView? ToDocumentView(IWpfTextView? textView)
+ {
+ if (textView == null)
+ return null;
+
+ try
+ {
+ return textView.ToDocumentView();
+ }
+ catch
+ {
+ return ThreadHelper.JoinableTaskFactory.Run(async () => await VS.Documents.GetActiveDocumentViewAsync());
+ }
+ }
  }
 }