// 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;
using System.ComponentModel.Composition;
using Microsoft.CodeAnalysis.Editor.Host;
using Microsoft.CodeAnalysis.Editor.Shared.Extensions;
using Microsoft.CodeAnalysis.Editor.Shared.Utilities;
using Microsoft.CodeAnalysis.Host.Mef;
using Microsoft.CodeAnalysis.Options;
using Microsoft.CodeAnalysis.Shared.TestHooks;
using Microsoft.VisualStudio.Language.Intellisense.AsyncCompletion;
using Microsoft.VisualStudio.Text.Editor;
using Microsoft.VisualStudio.Utilities;
 
namespace Microsoft.CodeAnalysis.Editor.Implementation.IntelliSense.AsyncCompletion;
 
[Export(typeof(IAsyncCompletionSourceProvider))]
[Name("Roslyn Completion Source Provider")]
[ContentType(ContentTypeNames.RoslynContentType)]
[method: ImportingConstructor]
[method: Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
internal class CompletionSourceProvider(
    IThreadingContext threadingContext,
    IUIThreadOperationExecutor operationExecutor,
    IAsynchronousOperationListenerProvider listenerProvider,
    Lazy<IStreamingFindUsagesPresenter> streamingPresenter,
    EditorOptionsService editorOptionsService) : IAsyncCompletionSourceProvider
{
    private readonly IThreadingContext _threadingContext = threadingContext;
    private readonly IUIThreadOperationExecutor _operationExecutor = operationExecutor;
    private readonly Lazy<IStreamingFindUsagesPresenter> _streamingPresenter = streamingPresenter;
    private readonly IAsynchronousOperationListener _listener = listenerProvider.GetListener(FeatureAttribute.CompletionSet);
    private readonly EditorOptionsService _editorOptionsService = editorOptionsService;
 
    public IAsyncCompletionSource? GetOrCreate(ITextView textView)
    {
        if (textView.IsInLspEditorContext())
            return null;
 
        return new CompletionSource(textView, _streamingPresenter, _threadingContext, _operationExecutor, _listener, _editorOptionsService);
    }
}