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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.
#nullable disable
using System;
using System.Collections.Generic;
using System.Composition;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.Editor;
using Microsoft.CodeAnalysis.Editor.Implementation.InlineRename;
using Microsoft.CodeAnalysis.Editor.Shared.Extensions;
using Microsoft.CodeAnalysis.ErrorReporting;
using Microsoft.CodeAnalysis.Host;
using Microsoft.CodeAnalysis.Host.Mef;
using Microsoft.CodeAnalysis.Options;
using Microsoft.VisualStudio;
using Microsoft.VisualStudio.Editor;
using Microsoft.VisualStudio.OLE.Interop;
using Microsoft.VisualStudio.Shell;
using Microsoft.VisualStudio.Text;
using Microsoft.VisualStudio.Text.Editor;
using Microsoft.VisualStudio.Text.Operations;
using Microsoft.VisualStudio.TextManager.Interop;
using Roslyn.Utilities;
namespace Microsoft.VisualStudio.LanguageServices.Implementation.InlineRename
{
using Workspace = Microsoft.CodeAnalysis.Workspace;
[ExportWorkspaceServiceFactory(typeof(IInlineRenameUndoManager), ServiceLayer.Host), Shared]
internal sealed class VisualStudioInlineRenameUndoManagerServiceFactory : IWorkspaceServiceFactory
{
private readonly InlineRenameService _inlineRenameService;
private readonly IVsEditorAdaptersFactoryService _editorAdaptersFactoryService;
private readonly IGlobalOptionService _globalOptionService;
[ImportingConstructor]
[Obsolete(MefConstruction.ImportingConstructorMessage, error: true)]
public VisualStudioInlineRenameUndoManagerServiceFactory(
InlineRenameService inlineRenameService,
IVsEditorAdaptersFactoryService editorAdaptersFactoryService,
IGlobalOptionService globalOptionService)
{
_inlineRenameService = inlineRenameService;
_editorAdaptersFactoryService = editorAdaptersFactoryService;
_globalOptionService = globalOptionService;
}
public IWorkspaceService CreateService(HostWorkspaceServices workspaceServices)
=> new InlineRenameUndoManager(_inlineRenameService, _editorAdaptersFactoryService, _globalOptionService);
internal class InlineRenameUndoManager : AbstractInlineRenameUndoManager<InlineRenameUndoManager.BufferUndoState>, IInlineRenameUndoManager
{
private class RenameUndoPrimitive : IOleUndoUnit
{
private readonly string _description;
public RenameUndoPrimitive(string description)
=> _description = description;
public virtual void Do(IOleUndoManager pUndoManager)
{
}
public void GetDescription(out string pBstr)
=> pBstr = _description;
public void GetUnitType(out Guid pClsid, [ComAliasName("Microsoft.VisualStudio.OLE.Interop.LONG")] out int plID)
=> throw new NotImplementedException();
public void OnNextAdd()
{
}
}
private class RedoPrimitive : RenameUndoPrimitive
{
private readonly IOleUndoManager _undoManager;
public RedoPrimitive(IOleUndoManager undoManager, string replacementText) : base(replacementText)
=> _undoManager = undoManager;
// Undoing this instance simply adds it to the Redo stack.
public override void Do(IOleUndoManager pUndoManager)
=> _undoManager.Add(this);
}
internal class BufferUndoState
{
public IOleUndoManager UndoManager { get; set; }
public ITextUndoHistory TextUndoHistory { get; set; }
public IOleUndoUnit StartRenameSessionUndoPrimitive { get; set; }
public IOleUndoUnit ConflictResolutionRenameUndoPrimitive { get; set; }
public ITextBuffer UndoHistoryBuffer { get; set; }
}
private readonly IVsEditorAdaptersFactoryService _editorAdaptersFactoryService;
public InlineRenameUndoManager(InlineRenameService inlineRenameService, IVsEditorAdaptersFactoryService editorAdaptersFactoryService, IGlobalOptionService globalOptionService) : base(inlineRenameService, globalOptionService)
=> _editorAdaptersFactoryService = editorAdaptersFactoryService;
public void CreateStartRenameUndoTransaction(Workspace workspace, ITextBuffer subjectBuffer, IInlineRenameSession inlineRenameSession)
{
var startRenameUndoPrimitive = new RenameUndoPrimitive(EditorFeaturesResources.Start_Rename);
var textUndoHistoryService = workspace.Services.GetService<ITextUndoHistoryWorkspaceService>();
Contract.ThrowIfFalse(textUndoHistoryService.TryGetTextUndoHistory(workspace, subjectBuffer, out var undoHistory));
Contract.ThrowIfFalse(undoHistory.Properties.TryGetProperty(typeof(ITextBuffer), out ITextBuffer primaryBuffer));
var undoManager = GetUndoManager(primaryBuffer);
UndoManagers[subjectBuffer] = new BufferUndoState() { UndoManager = undoManager, TextUndoHistory = undoHistory, StartRenameSessionUndoPrimitive = startRenameUndoPrimitive, UndoHistoryBuffer = primaryBuffer };
undoManager.Add(startRenameUndoPrimitive);
}
public void CreateConflictResolutionUndoTransaction(ITextBuffer subjectBuffer, Action applyEdit)
{
// Replace the StartRenameSession undo entry with an identically named entry that also includes
// the conflict resolution edits.
var undoManager = this.UndoManagers[subjectBuffer].UndoManager;
try
{
// Replace the StartRenameSession undo entry with an identically named entry that also includes
// the conflict resolution edits.
undoManager.UndoTo(this.UndoManagers[subjectBuffer].StartRenameSessionUndoPrimitive);
}
catch (COMException ex) when (ex.ErrorCode == VSConstants.E_UNEXPECTED && FatalError.ReportAndCatch(ex))
{
// According to the documentation, E_UNEXPECTED (0x8000FFFF) is raised when the UndoManager is disabled.
// https://docs.microsoft.com/en-us/windows/win32/api/ocidl/nf-ocidl-ioleundomanager-undoto#return-value
// Report a non-fatal error so we can learn more about this scenario.
}
var adapter = _editorAdaptersFactoryService.GetBufferAdapter(this.UndoManagers[subjectBuffer].UndoHistoryBuffer);
var compoundAction = adapter as IVsCompoundAction;
compoundAction.OpenCompoundAction(EditorFeaturesResources.Start_Rename);
applyEdit();
compoundAction.CloseCompoundAction();
this.UndoManagers[subjectBuffer].ConflictResolutionRenameUndoPrimitive = GetUndoUnits(undoManager).Last();
}
public void UndoTemporaryEdits(ITextBuffer subjectBuffer, bool disconnect)
=> UndoTemporaryEdits(subjectBuffer, disconnect, true);
protected override void UndoTemporaryEdits(ITextBuffer subjectBuffer, bool disconnect, bool undoConflictResolution)
{
// There are crashes from Windows Error Reporting that indicate the BufferUndoState
// may be being unavailable here when inline rename has been dismissed due to an
// external workspace change. See bug #1167415.
if (!this.UndoManagers.TryGetValue(subjectBuffer, out var bufferUndoState))
{
return;
}
var undoManager = bufferUndoState.UndoManager;
var startRenameUndoPrimitive = bufferUndoState.StartRenameSessionUndoPrimitive;
var markerPrimitive = bufferUndoState.ConflictResolutionRenameUndoPrimitive ?? startRenameUndoPrimitive;
// If we're not undoing conflict resolution, we need to undo the next unit after our startRenameUndoPrimitive
var count = GetUndoUnits(undoManager).SkipWhile(u => u != markerPrimitive).Count() + (undoConflictResolution ? 0 : -1);
for (var i = 0; i < count; i++)
{
undoManager.UndoTo(null);
}
if (disconnect)
{
// destroy the redo stack.
undoManager.Add(startRenameUndoPrimitive);
undoManager.UndoTo(null);
}
else if (undoConflictResolution)
{
// If we undid conflict resolution, then we need to put back our start rename transaction
undoManager.Add(startRenameUndoPrimitive);
bufferUndoState.ConflictResolutionRenameUndoPrimitive = null;
}
}
public void ApplyCurrentState(ITextBuffer subjectBuffer, object propagateSpansEditTag, IEnumerable<ITrackingSpan> spans)
{
// There are crash dumps that indicate the BufferUndoState may be being unavailable
// here when inline rename has been dismissed due to an external workspace change.
// See bug https://github.com/dotnet/roslyn/issues/31883.
if (!this.UndoManagers.TryGetValue(subjectBuffer, out var bufferUndoState))
{
return;
}
ApplyReplacementText(subjectBuffer, bufferUndoState.TextUndoHistory, propagateSpansEditTag, spans, this.currentState.ReplacementText);
// Here we create the descriptions for the redo list dropdown.
var undoManager = bufferUndoState.UndoManager;
foreach (var state in this.RedoStack.Reverse())
{
undoManager.Add(new RedoPrimitive(undoManager, GetUndoTransactionDescription(state.ReplacementText)));
}
foreach (var _ in this.RedoStack)
{
undoManager.UndoTo(null);
}
}
private IOleUndoManager GetUndoManager(ITextBuffer subjectBuffer)
{
var adapter = _editorAdaptersFactoryService.GetBufferAdapter(subjectBuffer);
if (adapter != null)
{
if (ErrorHandler.Succeeded(adapter.GetUndoManager(out var manager)))
{
return manager;
}
}
return null;
}
private static IEnumerable<IOleUndoUnit> GetUndoUnits(IOleUndoManager undoManager)
{
IEnumOleUndoUnits undoUnitEnumerator;
try
{
// Unfortunately, EnumUndoable returns the units in oldest-first order.
undoManager.EnumUndoable(out undoUnitEnumerator);
}
catch (COMException)
{
yield break;
}
const int BatchSize = 100;
var fetchedUndoUnits = new IOleUndoUnit[BatchSize];
while (true)
{
undoUnitEnumerator.Next(BatchSize, fetchedUndoUnits, out var fetchedCount);
for (var i = 0; i < fetchedCount; i++)
{
yield return fetchedUndoUnits[i];
}
if (fetchedCount < BatchSize)
{
break;
}
}
}
}
}
}
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