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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Collections.Immutable;
using System.Linq;
using Roslyn.Utilities;
namespace Microsoft.CodeAnalysis;
internal static class IDocumentTrackingServiceExtensions
{
/// <summary>
/// Gets the active <see cref="Document"/> the user is currently working in. May be null if
/// there is no active document or the active document is not in this <paramref name="solution"/>.
/// </summary>
public static Document? GetActiveDocument(this IDocumentTrackingService service, Solution solution)
{
// Note: GetDocument checks that the DocId is contained in the solution, and returns null if not.
return solution.GetDocument(service.TryGetActiveDocument());
}
/// <summary>
/// Get a read only collection of all the unique visible documents in the workspace that are
/// contained within <paramref name="solution"/>.
/// </summary>
public static ImmutableArray<Document> GetVisibleDocuments(this IDocumentTrackingService service, Solution solution)
=> service.GetVisibleDocuments()
.Select(solution.GetDocument)
.WhereNotNull()
.Distinct()
.ToImmutableArray();
}
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