File: EditorConfigSettings\SettingsEditorFactory.cs
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Project: src\src\VisualStudio\Core\Def\Microsoft.VisualStudio.LanguageServices_e5lazejx_wpftmp.csproj (Microsoft.VisualStudio.LanguageServices)
// 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 System.Linq;
using System.Runtime.InteropServices;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.Editor.EditorConfigSettings;
using Microsoft.CodeAnalysis.Editor.Shared.Utilities;
using Microsoft.CodeAnalysis.Host.Mef;
using Microsoft.Internal.VisualStudio.Shell.TableControl;
using Microsoft.VisualStudio.Editor;
using Microsoft.VisualStudio.OLE.Interop;
using Microsoft.VisualStudio.Shell;
using Microsoft.VisualStudio.Shell.Interop;
using Microsoft.VisualStudio.Shell.TableManager;
using Microsoft.VisualStudio.TextManager.Interop;
using IOleServiceProvider = Microsoft.VisualStudio.OLE.Interop.IServiceProvider;
 
namespace Microsoft.VisualStudio.LanguageServices.EditorConfigSettings;
 
[Export(typeof(SettingsEditorFactory))]
[Guid(SettingsEditorFactoryGuidString)]
internal sealed class SettingsEditorFactory : IVsEditorFactory, IVsEditorFactory4, IDisposable
{
    public static readonly Guid SettingsEditorFactoryGuid = new(SettingsEditorFactoryGuidString);
    public const string SettingsEditorFactoryGuidString = "68b46364-d378-42f2-9e72-37d86c5f4468";
    public const string Extension = ".editorconfig";
 
    private readonly ISettingsAggregator _settingsDataProviderFactory;
    private readonly VisualStudioWorkspace _workspace;
    private readonly IWpfTableControlProvider _controlProvider;
    private readonly ITableManagerProvider _tableMangerProvider;
    private readonly IVsEditorAdaptersFactoryService _vsEditorAdaptersFactoryService;
    private readonly IThreadingContext _threadingContext;
    private ServiceProvider? _vsServiceProvider;
 
    [ImportingConstructor]
    [Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
    public SettingsEditorFactory(VisualStudioWorkspace workspace,
                                 IWpfTableControlProvider controlProvider,
                                 ITableManagerProvider tableMangerProvider,
                                 IVsEditorAdaptersFactoryService vsEditorAdaptersFactoryService,
                                 IThreadingContext threadingContext)
    {
        _settingsDataProviderFactory = workspace.Services.GetRequiredService<ISettingsAggregator>();
        _workspace = workspace;
        _controlProvider = controlProvider;
        _tableMangerProvider = tableMangerProvider;
        _vsEditorAdaptersFactoryService = vsEditorAdaptersFactoryService;
        _threadingContext = threadingContext;
    }
 
    public void Dispose()
    {
        if (_vsServiceProvider is not null)
        {
            _vsServiceProvider.Dispose();
            _vsServiceProvider = null;
        }
    }
 
    public int CreateEditorInstance(uint grfCreateDoc,
                                    string filePath,
                                    string pszPhysicalView,
                                    IVsHierarchy pvHier,
                                    uint itemid,
                                    IntPtr punkDocDataExisting,
                                    out IntPtr ppunkDocView,
                                    out IntPtr ppunkDocData,
                                    out string? pbstrEditorCaption,
                                    out Guid pguidCmdUI,
                                    out int pgrfCDW)
    {
        // Initialize to null
        ppunkDocView = IntPtr.Zero;
        ppunkDocData = IntPtr.Zero;
        pguidCmdUI = SettingsEditorFactoryGuid;
        pgrfCDW = 0;
        pbstrEditorCaption = null;
 
        if (!_workspace.CurrentSolution.Projects.Any(p => p.Language is LanguageNames.CSharp or LanguageNames.VisualBasic))
        {
            // If there are no VB or C# projects loaded in the solution (so an editorconfig file in a C++ project) then we want their
            // editorfactory to present the file instead of use showing ours
            return VSConstants.VS_E_UNSUPPORTEDFORMAT;
        }
 
        if (!_workspace.CurrentSolution.Projects.Any(p => p.AnalyzerConfigDocuments.Any(editorconfig => StringComparer.OrdinalIgnoreCase.Equals(editorconfig.FilePath, filePath))))
        {
            // If the user is simply opening an editorconfig file that does not apply to the current solution we just want to show the text view
            return VSConstants.VS_E_UNSUPPORTEDFORMAT;
        }
 
        // Validate inputs
        if ((grfCreateDoc & (VSConstants.CEF_OPENFILE | VSConstants.CEF_SILENT)) == 0)
        {
            return VSConstants.E_INVALIDARG;
        }
 
        IVsTextLines? textBuffer = null;
        if (punkDocDataExisting == IntPtr.Zero)
        {
            Assumes.NotNull(_vsServiceProvider);
            if (_vsServiceProvider.TryGetService<SLocalRegistry, ILocalRegistry>(_threadingContext.JoinableTaskFactory, out var localRegistry))
            {
                var textLinesGuid = typeof(IVsTextLines).GUID;
                _ = localRegistry.CreateInstance(typeof(VsTextBufferClass).GUID, null, ref textLinesGuid, 1 /*CLSCTX_INPROC_SERVER*/, out var ptr);
                try
                {
                    textBuffer = Marshal.GetObjectForIUnknown(ptr) as IVsTextLines;
                }
                finally
                {
                    _ = Marshal.Release(ptr); // Release RefCount from CreateInstance call
                }
 
                if (textBuffer is IObjectWithSite objectWithSite)
                {
                    var oleServiceProvider = _vsServiceProvider.GetService<IOleServiceProvider>(_threadingContext.JoinableTaskFactory);
                    objectWithSite.SetSite(oleServiceProvider);
                }
            }
        }
        else
        {
            textBuffer = Marshal.GetObjectForIUnknown(punkDocDataExisting) as IVsTextLines;
            if (textBuffer == null)
            {
                return VSConstants.VS_E_INCOMPATIBLEDOCDATA;
            }
        }
 
        if (textBuffer is null)
        {
            throw new InvalidOperationException("unable to acquire text buffer");
        }
 
        // Create the editor
        var newEditor = new SettingsEditorPane(_vsEditorAdaptersFactoryService,
                                               _threadingContext,
                                               _settingsDataProviderFactory,
                                               _controlProvider,
                                               _tableMangerProvider,
                                               filePath,
                                               textBuffer,
                                               _workspace);
        ppunkDocView = Marshal.GetIUnknownForObject(newEditor);
        ppunkDocData = Marshal.GetIUnknownForObject(textBuffer);
        pbstrEditorCaption = "";
        return VSConstants.S_OK;
    }
 
    public int SetSite(IOleServiceProvider psp)
    {
        _vsServiceProvider = new ServiceProvider(psp);
        return VSConstants.S_OK;
    }
 
    public int Close() => VSConstants.S_OK;
 
    public int MapLogicalView(ref Guid rguidLogicalView, out string? pbstrPhysicalView)
    {
        pbstrPhysicalView = null;    // initialize out parameter
 
        // we support only a single physical view
        if (VSConstants.LOGVIEWID_Primary == rguidLogicalView)
        {
            return VSConstants.S_OK;        // primary view uses NULL as pbstrPhysicalView
        }
        else
        {
            return VSConstants.E_NOTIMPL;   // you must return E_NOTIMPL for any unrecognized rguidLogicalView values
        }
    }
 
    public object? GetDocumentData(uint grfCreate, string pszMkDocument, IVsHierarchy pHier, uint itemid)
        => null;
 
    public object? GetDocumentView(uint grfCreate, string pszPhysicalView, IVsHierarchy pHier, IntPtr punkDocData, uint itemid)
        => null;
 
    public string? GetEditorCaption(string pszMkDocument, string pszPhysicalView, IVsHierarchy pHier, IntPtr punkDocData, out Guid pguidCmdUI)
        => throw new NotImplementedException();
 
    public bool ShouldDeferUntilIntellisenseIsReady(uint grfCreate, string pszMkDocument, string pszPhysicalView)
        => true;
}