private IReadOnlyList <CompletionItem> GetAttributeCompletions(
SyntaxNode containingAttribute,
string containingTagName,
string selectedAttributeName,
IEnumerable <KeyValuePair <string, string> > attributes,
RazorCodeDocument codeDocument)
{
var ancestors = containingAttribute.Parent.Ancestors();
var tagHelperDocumentContext = codeDocument.GetTagHelperContext();
var nonDirectiveAttributeTagHelpers = tagHelperDocumentContext.TagHelpers.Where(tagHelper => !tagHelper.BoundAttributes.Any(attribute => attribute.IsDirectiveAttribute()));
var filteredContext = TagHelperDocumentContext.Create(tagHelperDocumentContext.Prefix, nonDirectiveAttributeTagHelpers);
var(ancestorTagName, ancestorIsTagHelper) = _tagHelperFactsService.GetNearestAncestorTagInfo(ancestors);
var attributeCompletionContext = new AttributeCompletionContext(
filteredContext,
existingCompletions: Enumerable.Empty <string>(),
containingTagName,
selectedAttributeName,
attributes,
ancestorTagName,
ancestorIsTagHelper,
HtmlFactsService.IsHtmlTagName);
var completionItems = new List <CompletionItem>();
var completionResult = _razorTagHelperCompletionService.GetAttributeCompletions(attributeCompletionContext);
foreach (var completion in completionResult.Completions)
{
var filterText = completion.Key;
// This is a little bit of a hack because the information returned by _razorTagHelperCompletionService.GetAttributeCompletions
// does not have enough information for us to determine if a completion is an indexer completion or not. Therefore we have to
// jump through a few hoops below to:
// 1. Determine if this specific completion is an indexer based completion
// 2. Resolve an appropriate snippet if it is. This is more troublesome because we need to remove the ... suffix to accurately
// build a snippet that makes sense for the user to type.
var indexerCompletion = filterText.EndsWith("...", StringComparison.Ordinal);
if (indexerCompletion)
{
filterText = filterText.Substring(0, filterText.Length - 3);
}
var attributeCommitCharacters = ResolveAttributeCommitCharacters(completion.Value, indexerCompletion);
var razorCompletionItem = new CompletionItem()
{
Label = completion.Key,
InsertText = filterText,
InsertTextFormat = InsertTextFormat.PlainText,
FilterText = filterText,
SortText = filterText,
Kind = CompletionItemKind.TypeParameter,
CommitCharacters = attributeCommitCharacters,
};
var attributeDescriptions = completion.Value.Select(boundAttribute => new TagHelperAttributeDescriptionInfo(
boundAttribute.DisplayName,
boundAttribute.GetPropertyName(),
indexerCompletion ? boundAttribute.IndexerTypeName : boundAttribute.TypeName,
boundAttribute.Documentation));
var attributeDescriptionInfo = new AttributeDescriptionInfo(attributeDescriptions.ToList());
razorCompletionItem.SetDescriptionInfo(attributeDescriptionInfo);
completionItems.Add(razorCompletionItem);
}
return(completionItems);
}
