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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 Microsoft.CodeAnalysis.Text;
using Microsoft.VisualStudio.Text;
namespace Microsoft.CodeAnalysis.Editor.Shared.Tagging;
internal partial class TaggerEventSources
{
private class DocumentActiveContextChangedEventSource(ITextBuffer subjectBuffer) : AbstractWorkspaceTrackingTaggerEventSource(subjectBuffer)
{
protected override void ConnectToWorkspace(Workspace workspace)
=> workspace.DocumentActiveContextChanged += OnDocumentActiveContextChanged;
protected override void DisconnectFromWorkspace(Workspace workspace)
=> workspace.DocumentActiveContextChanged -= OnDocumentActiveContextChanged;
private void OnDocumentActiveContextChanged(object? sender, DocumentActiveContextChangedEventArgs e)
{
var document = SubjectBuffer.AsTextContainer().GetOpenDocumentInCurrentContext();
if (document != null && document.Id == e.NewActiveContextDocumentId)
{
this.RaiseChanged();
}
}
}
}
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