public async Task <CompletionContext> GetCompletionContextAsync(
IAsyncCompletionSession session,
CompletionTrigger trigger,
SnapshotPoint triggerLocation,
SnapshotSpan applicableSpan,
CancellationToken token)
{
try
{
var codeDocument = await Parser.GetLatestCodeDocumentAsync(triggerLocation.Snapshot, token);
if (codeDocument is null)
{
return(CompletionContext.Empty);
}
var location = new SourceSpan(triggerLocation.Position, 0);
var syntaxTree = codeDocument.GetSyntaxTree();
var tagHelperDocumentContext = codeDocument.GetTagHelperContext();
var razorCompletionContext = new RazorCompletionContext(syntaxTree, tagHelperDocumentContext);
var razorCompletionItems = _completionFactsService.GetCompletionItems(razorCompletionContext, location);
var completionItems = new List <CompletionItem>();
foreach (var razorCompletionItem in razorCompletionItems)
{
if (razorCompletionItem.Kind != RazorCompletionItemKind.Directive)
{
// Don't support any other types of completion kinds other than directives.
continue;
}
var completionItem = new CompletionItem(
displayText: razorCompletionItem.DisplayText,
filterText: razorCompletionItem.DisplayText,
insertText: razorCompletionItem.InsertText,
source: this,
icon: DirectiveImageGlyph,
filters: DirectiveCompletionFilters,
suffix: string.Empty,
sortText: razorCompletionItem.DisplayText,
attributeIcons: ImmutableArray <ImageElement> .Empty);
var completionDescription = razorCompletionItem.GetDirectiveCompletionDescription();
completionItem.Properties.AddProperty(DescriptionKey, completionDescription);
completionItems.Add(completionItem);
}
var context = new CompletionContext(completionItems.ToImmutableArray());
return(context);
}
catch (OperationCanceledException)
{
return(CompletionContext.Empty);
}
}
public async Task <CompletionContext> GetCompletionContextAsync(IAsyncCompletionSession session, CompletionTrigger trigger, SnapshotPoint triggerLocation, SnapshotSpan applicableToSpan, CancellationToken token)
{
try
{
var codeDocument = await _parser.GetLatestCodeDocumentAsync(triggerLocation.Snapshot, token);
if (codeDocument == null)
{
// Code document not available yet.
return(CompletionContext.Empty);
}
var syntaxTree = codeDocument.GetSyntaxTree();
var tagHelperDocumentContext = codeDocument.GetTagHelperContext();
var location = new SourceSpan(triggerLocation.Position, 0);
var razorCompletionContext = new RazorCompletionContext(syntaxTree, tagHelperDocumentContext);
var razorCompletionItems = _completionFactsService.GetCompletionItems(razorCompletionContext, location);
if (razorCompletionItems.Count == 0)
{
return(CompletionContext.Empty);
}
// Check if we're providing completion items while a legacy completion session is active. If so
// we'll need to dismiss the legacy completion session to ensure we don't get two completion lists.
var activeSessions = _completionBroker.GetSessions(session.TextView);
foreach (var activeSession in activeSessions)
{
if (activeSession.Properties.ContainsProperty(nameof(IAsyncCompletionSession)))
{
continue;
}
// Legacy completion is also active, we need to dismiss it.
await _joinableTaskFactory.SwitchToMainThreadAsync();
activeSession.Dismiss();
}
var completionItems = new List <CompletionItem>();
var completionItemKinds = new HashSet <RazorCompletionItemKind>();
foreach (var razorCompletionItem in razorCompletionItems)
{
if (razorCompletionItem.Kind != RazorCompletionItemKind.DirectiveAttribute &&
razorCompletionItem.Kind != RazorCompletionItemKind.DirectiveAttributeParameter)
{
// Don't support any other types of completion kinds other than directive attributes and their parameters.
continue;
}
var completionItem = new CompletionItem(
displayText: razorCompletionItem.DisplayText,
filterText: razorCompletionItem.DisplayText,
insertText: razorCompletionItem.InsertText,
source: this,
icon: s_directiveAttributeImageGlyph,
filters: s_directiveAttributeCompletionFilters,
suffix: string.Empty,
sortText: razorCompletionItem.DisplayText,
attributeIcons: ImmutableArray <ImageElement> .Empty);
completionItems.Add(completionItem);
completionItemKinds.Add(razorCompletionItem.Kind);
var completionDescription = razorCompletionItem.GetAttributeCompletionDescription();
completionItem.Properties[DescriptionKey] = completionDescription;
}
session.Properties.SetCompletionItemKinds(completionItemKinds);
var orderedCompletionItems = completionItems.OrderBy(item => item.DisplayText);
var context = new CompletionContext(orderedCompletionItems.ToImmutableArray());
return(context);
}
catch (OperationCanceledException)
{
return(CompletionContext.Empty);
}
}
