public void TryConvert_TagHelperAttribute_ReturnsTrue()
{
// Arrange
var completionItem = new RazorCompletionItem("format", "format", RazorCompletionItemKind.TagHelperAttribute);
completionItem.SetTagHelperAttributeDescriptionInfo(new AttributeDescriptionInfo(Array.Empty <TagHelperAttributeDescriptionInfo>()));
// Act
var result = RazorCompletionEndpoint.TryConvert(completionItem, out var converted);
// Assert
Assert.True(result);
Assert.Equal(completionItem.DisplayText, converted.Label);
Assert.Equal(completionItem.InsertText, converted.InsertText);
Assert.Equal(completionItem.InsertText, converted.FilterText);
Assert.Equal(completionItem.InsertText, converted.SortText);
Assert.Null(converted.Detail);
Assert.Null(converted.Documentation);
Assert.Null(converted.Command);
var descriptionInfo = completionItem.GetTagHelperAttributeDescriptionInfo();
Assert.NotNull(descriptionInfo);
}
private IReadOnlyList <RazorCompletionItem> GetAttributeCompletions(
SyntaxNode containingAttribute,
string containingTagName,
string?selectedAttributeName,
IEnumerable <KeyValuePair <string, string> > attributes,
TagHelperDocumentContext tagHelperDocumentContext)
{
var ancestors = containingAttribute.Parent.Ancestors();
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 <RazorCompletionItem>();
var completionResult = _tagHelperCompletionService.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 RazorCompletionItem(
displayText: completion.Key,
insertText: filterText,
RazorCompletionItemKind.TagHelperAttribute,
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.SetTagHelperAttributeDescriptionInfo(attributeDescriptionInfo);
completionItems.Add(razorCompletionItem);
}
return(completionItems);
}