/// <summary>
/// Provide completions for the specified location.
/// </summary>
/// <param name="location">
/// The <see cref="XmlLocation"/> where completions are requested.
/// </param>
/// <param name="projectDocument">
/// The <see cref="ProjectDocument"/> that contains the <paramref name="location"/>.
/// </param>
/// <param name="triggerCharacters">
/// The character(s), if any, that triggered completion.
/// </param>
/// <param name="cancellationToken">
/// A <see cref="CancellationToken"/> that can be used to cancel the operation.
/// </param>
/// <returns>
/// A <see cref="Task{TResult}"/> that resolves either a <see cref="CompletionList"/>s, or <c>null</c> if no completions are provided.
/// </returns>
public override async Task <CompletionList> ProvideCompletions(XmlLocation location, ProjectDocument projectDocument, string triggerCharacters, CancellationToken cancellationToken = default(CancellationToken))
{
if (location == null)
{
throw new ArgumentNullException(nameof(location));
}
if (projectDocument == null)
{
throw new ArgumentNullException(nameof(projectDocument));
}
List <CompletionItem> completions = new List <CompletionItem>();
using (await projectDocument.Lock.ReaderLockAsync())
{
XSAttribute conditionAttribute;
if (!location.IsAttributeValue(out conditionAttribute) || conditionAttribute.Name != "Condition")
{
return(null);
}
if (conditionAttribute.Element.ParentElement?.Name != "PropertyGroup")
{
return(null);
}
LspModels.Range replaceRange = conditionAttribute.ValueRange.ToLsp();
completions.Add(new CompletionItem
{
Label = "If not already defined",
Detail = "Condition",
Documentation = "Only use this property if the property does not already have a value.",
TextEdit = new TextEdit
{
NewText = $"'$({conditionAttribute.Element.Name})' == ''",
Range = replaceRange
}
});
}
if (completions.Count == 0)
{
return(null);
}
return(new CompletionList(completions, isIncomplete: false));
}
public void InAttributeValue(string testFileName, int line, int column, string expectedAttributeName)
{
Position testPosition = new Position(line, column);
string testXml = LoadTestFile("TestFiles", testFileName + ".xml");
TextPositions positions = new TextPositions(testXml);
XmlDocumentSyntax document = Parser.ParseText(testXml);
XmlLocator locator = new XmlLocator(document, positions);
XmlLocation result = locator.Inspect(testPosition);
Assert.NotNull(result);
XSAttribute attribute;
Assert.True(result.IsAttribute(out attribute), "IsAttribute");
Assert.True(result.IsAttributeValue(), "IsAttributeValue");
Assert.Equal(expectedAttributeName, attribute.Name);
// TODO: Verify Parent, PreviousSibling, and NextSibling.
}
