// 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.Host.Mef;
using Microsoft.CodeAnalysis.Options;
using Microsoft.VisualStudio.Text.Editor;
using Microsoft.VisualStudio.Utilities;
 
namespace Microsoft.CodeAnalysis.Editor.Implementation.SmartIndent;
 
[Export(typeof(ISmartIndentProvider))]
[ContentType(ContentTypeNames.CSharpContentType)]
[ContentType(ContentTypeNames.VisualBasicContentType)]
[method: ImportingConstructor]
[method: Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
internal sealed class SmartIndentProvider(EditorOptionsService editorOptionsService) : ISmartIndentProvider
{
    private readonly EditorOptionsService _editorOptionsService = editorOptionsService;
 
    public ISmartIndent? CreateSmartIndent(ITextView textView)
    {
        if (textView == null)
        {
            throw new ArgumentNullException(nameof(textView));
        }
 
        if (!_editorOptionsService.GlobalOptions.GetOption(SmartIndenterOptionsStorage.SmartIndenter))
        {
            return null;
        }
 
        return new SmartIndent(textView, _editorOptionsService);
    }
}