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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 System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Windows.Interop;
using Microsoft.CodeAnalysis.Editor.InlineRename;
using Microsoft.CodeAnalysis.Editor.Shared.Extensions;
using Microsoft.CodeAnalysis.Editor.Shared.Utilities;
using Microsoft.CodeAnalysis.EditorFeatures.Lightup;
using Microsoft.CodeAnalysis.InlineRename;
using Microsoft.CodeAnalysis.InlineRename.UI.SmartRename;
using Microsoft.CodeAnalysis.Options;
using Microsoft.CodeAnalysis.Shared.TestHooks;
using Microsoft.CodeAnalysis.Text;
using Microsoft.VisualStudio.Imaging;
using Microsoft.VisualStudio.Imaging.Interop;
using Microsoft.VisualStudio.PlatformUI.OleComponentSupport;
using Microsoft.VisualStudio.Text;
namespace Microsoft.CodeAnalysis.Editor.Implementation.InlineRename
{
internal class RenameFlyoutViewModel : INotifyPropertyChanged, IDisposable
{
private readonly bool _registerOleComponent;
private readonly IGlobalOptionService _globalOptionService;
private OleComponent? _oleComponent;
private bool _disposedValue;
private bool _isReplacementTextValid = true;
public event PropertyChangedEventHandler? PropertyChanged;
public RenameFlyoutViewModel(
InlineRenameSession session,
TextSpan selectionSpan,
bool registerOleComponent,
IGlobalOptionService globalOptionService,
IThreadingContext threadingContext,
IAsynchronousOperationListenerProvider listenerProvider,
#pragma warning disable CS0618 // Editor team use Obsolete attribute to mark potential changing API
Lazy<ISmartRenameSessionFactoryWrapper>? smartRenameSessionFactory)
#pragma warning restore CS0618
{
Session = session;
_registerOleComponent = registerOleComponent;
_globalOptionService = globalOptionService;
Session.ReplacementTextChanged += OnReplacementTextChanged;
Session.ReplacementsComputed += OnReplacementsComputed;
Session.ReferenceLocationsChanged += OnReferenceLocationsChanged;
StartingSelection = selectionSpan;
InitialTrackingSpan = session.TriggerSpan.CreateTrackingSpan(SpanTrackingMode.EdgeInclusive);
var smartRenameSession = smartRenameSessionFactory?.Value.CreateSmartRenameSession(Session.TriggerSpan);
if (smartRenameSession is not null)
{
SmartRenameViewModel = new SmartRenameViewModel(globalOptionService, threadingContext, listenerProvider, smartRenameSession.Value, this);
}
RegisterOleComponent();
}
public SmartRenameViewModel? SmartRenameViewModel { get; }
public string IdentifierText
{
get => Session.ReplacementText;
set
{
if (value != Session.ReplacementText)
{
Session.ApplyReplacementText(value, propagateEditImmediately: true, updateSelection: false);
NotifyPropertyChanged(nameof(IdentifierText));
}
}
}
public InlineRenameSession Session { get; }
public ITrackingSpan InitialTrackingSpan { get; }
public bool AllowFileRename => Session.FileRenameInfo == InlineRenameFileRenameInfo.Allowed && _isReplacementTextValid;
public bool ShowFileRename => Session.FileRenameInfo != InlineRenameFileRenameInfo.NotAllowed;
public string FileRenameString => Session.FileRenameInfo switch
{
InlineRenameFileRenameInfo.TypeDoesNotMatchFileName => EditorFeaturesResources.Rename_file_name_doesnt_match,
InlineRenameFileRenameInfo.TypeWithMultipleLocations => EditorFeaturesResources.Rename_file_partial_type,
_ => EditorFeaturesResources.Rename_symbols_file
};
private string? _searchText;
public string? SearchText
{
get => _searchText;
set => Set(ref _searchText, value);
}
private string? _statusText;
public string? StatusText
{
get => _statusText;
set => Set(ref _statusText, value);
}
private Severity _statusSeverity;
public Severity StatusSeverity
{
get => _statusSeverity;
set
{
if (Set(ref _statusSeverity, value))
{
NotifyPropertyChanged(nameof(ShowStatusText));
NotifyPropertyChanged(nameof(StatusImageMoniker));
}
}
}
public bool ShowStatusText => _statusSeverity != Severity.None;
public bool ShowSearchText => _statusSeverity != Severity.Error;
public ImageMoniker StatusImageMoniker => _statusSeverity switch
{
Severity.Error => KnownMonikers.StatusError,
Severity.Warning => KnownMonikers.StatusWarning,
_ => ImageLibrary.InvalidImageMoniker
};
public bool RenameInCommentsFlag
{
get => Session.Options.RenameInComments;
set
{
_globalOptionService.SetGlobalOption(InlineRenameSessionOptionsStorage.RenameInComments, value);
Session.RefreshRenameSessionWithOptionsChanged(Session.Options with { RenameInComments = value });
}
}
public bool RenameInStringsFlag
{
get => Session.Options.RenameInStrings;
set
{
_globalOptionService.SetGlobalOption(InlineRenameSessionOptionsStorage.RenameInStrings, value);
Session.RefreshRenameSessionWithOptionsChanged(Session.Options with { RenameInStrings = value });
}
}
public bool RenameFileFlag
{
get => Session.Options.RenameFile;
set
{
_globalOptionService.SetGlobalOption(InlineRenameSessionOptionsStorage.RenameFile, value);
Session.RefreshRenameSessionWithOptionsChanged(Session.Options with { RenameFile = value });
}
}
public bool PreviewChangesFlag
{
get => Session.PreviewChanges;
set
{
_globalOptionService.SetGlobalOption(InlineRenameSessionOptionsStorage.PreviewChanges, value);
Session.SetPreviewChanges(value);
}
}
public bool RenameOverloadsFlag
{
get => Session.Options.RenameOverloads;
set
{
_globalOptionService.SetGlobalOption(InlineRenameSessionOptionsStorage.RenameOverloads, value);
Session.RefreshRenameSessionWithOptionsChanged(Session.Options with { RenameOverloads = value });
}
}
public bool IsCollapsed
{
get => _globalOptionService.GetOption(InlineRenameUIOptionsStorage.CollapseUI);
set
{
if (value != IsCollapsed)
{
_globalOptionService.SetGlobalOption(InlineRenameUIOptionsStorage.CollapseUI, value);
NotifyPropertyChanged(nameof(IsCollapsed));
NotifyPropertyChanged(nameof(IsExpanded));
}
}
}
public bool IsExpanded
{
get => !IsCollapsed;
set => IsCollapsed = !value;
}
public bool IsRenameOverloadsEditable
=> !Session.MustRenameOverloads;
public bool IsRenameOverloadsVisible
=> Session.HasRenameOverloads;
public TextSpan StartingSelection { get; }
public bool Submit()
{
if (StatusSeverity == Severity.Error)
{
return false;
}
SmartRenameViewModel?.Commit(IdentifierText);
Session.Commit();
return true;
}
public void Cancel()
{
SmartRenameViewModel?.Cancel();
Session.Cancel();
}
public void Dispose()
{
// Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
Dispose(disposing: true);
GC.SuppressFinalize(this);
}
/// <summary>
/// Shell routes commands based on focused tool window. Since we're outside of a tool window,
/// Editor can end up intercepting commands and TYPECHARs sent to us, even when we're focused,
/// so hook in and intercept each message for WPF.
/// </summary>
public void RegisterOleComponent()
{
// In unit testing we won't have an OleComponentManager available, so
// calls to OleComponent.CreateHostedComponent will throw
if (!_registerOleComponent)
{
return;
}
Debug.Assert(_oleComponent is null);
_oleComponent = OleComponent.CreateHostedComponent("Microsoft CodeAnalysis Inline Rename");
_oleComponent.PreTranslateMessage += OnPreTranslateMessage;
_oleComponent.BeginTracking();
}
private void UnregisterOleComponent()
{
if (_oleComponent is not null)
{
_oleComponent.EndTracking();
_oleComponent.PreTranslateMessage -= OnPreTranslateMessage;
_oleComponent.Dispose();
_oleComponent = null;
}
}
private void OnPreTranslateMessage(object sender, PreTranslateMessageEventArgs e)
{
var msg = e.Message;
if (ComponentDispatcher.RaiseThreadMessage(ref msg) || IsSuppressedMessage(msg))
{
e.MessageConsumed = true;
}
// When the adornment is focused, we register an OleComponent to divert window messages
// away from the editor and back to WPF to enable proper handling of arrows, backspace,
// delete, etc. Unfortunately, anything not handled by WPF is then propagated back to the
// shell command system where it is handled by the open editor window.
// To avoid unhandled arrow commands from being handled by editor,
// we mark them as handled so long as the adornment is focused.
static bool IsSuppressedMessage(MSG msg)
=> msg.message switch
{
0x0100 or // WM_KEYDOWN
0x0101 // WM_KEYUP
=> msg.wParam.ToInt32() switch
{
>= 0x0025 and <= 0x0028 => true, // VK_LEFT, VK_UP, VK_RIGHT, and VK_DOWN
0x0021 or // VK_PRIOR (Page Up)
0x0022 or // VK_NEXT (Page Down)
0x0023 or // VK_END
0x0024 or // VK_HOME
0x0D00 or // VK_RETURN
0x0009 => true, // VK_TAB
_ => false
},
_ => false
};
}
protected virtual void Dispose(bool disposing)
{
if (!_disposedValue)
{
if (disposing)
{
Session.ReplacementTextChanged -= OnReplacementTextChanged;
Session.ReplacementsComputed -= OnReplacementsComputed;
if (SmartRenameViewModel is not null)
{
SmartRenameViewModel.Dispose();
}
UnregisterOleComponent();
}
_disposedValue = true;
}
}
private void OnReplacementTextChanged(object sender, EventArgs e)
{
NotifyPropertyChanged(nameof(IdentifierText));
}
private void OnReplacementsComputed(object sender, IInlineRenameReplacementInfo result)
{
if (Set(ref _isReplacementTextValid, result.ReplacementTextValid, "IsReplacementTextValid"))
{
NotifyPropertyChanged(nameof(AllowFileRename));
if (!_isReplacementTextValid && !string.IsNullOrEmpty(IdentifierText))
{
StatusText = EditorFeaturesResources.The_new_name_is_not_a_valid_identifier;
StatusSeverity = Severity.Error;
return;
}
var resolvableConflicts = 0;
var unresolvedConflicts = 0;
foreach (var replacementKind in result.GetAllReplacementKinds())
{
switch (replacementKind)
{
case InlineRenameReplacementKind.UnresolvedConflict:
unresolvedConflicts++;
break;
case InlineRenameReplacementKind.ResolvedReferenceConflict:
case InlineRenameReplacementKind.ResolvedNonReferenceConflict:
resolvableConflicts++;
break;
}
}
if (unresolvedConflicts > 0)
{
StatusText = string.Format(EditorFeaturesResources._0_unresolvable_conflict_s, unresolvedConflicts);
StatusSeverity = Severity.Error;
return;
}
if (resolvableConflicts > 0)
{
StatusText = string.Format(EditorFeaturesResources._0_conflict_s_will_be_resolved, resolvableConflicts);
StatusSeverity = Severity.Warning;
return;
}
StatusText = null;
StatusSeverity = Severity.None;
}
}
private void OnReferenceLocationsChanged(object sender, ImmutableArray<InlineRenameLocation> renameLocations)
{
// Collapse the same edits across multiple instances of the same linked-file.
var fileCount = renameLocations.GroupBy(s => s.Document.FilePath).Count();
var referenceCount = renameLocations.Select(loc => (loc.Document.FilePath, loc.TextSpan)).Distinct().Count();
if (referenceCount == 1 && fileCount == 1)
{
SearchText = EditorFeaturesResources.Rename_will_update_1_reference_in_1_file;
}
else if (fileCount == 1)
{
SearchText = string.Format(EditorFeaturesResources.Rename_will_update_0_references_in_1_file, referenceCount);
}
else
{
SearchText = string.Format(EditorFeaturesResources.Rename_will_update_0_references_in_1_files, referenceCount, fileCount);
}
}
private void NotifyPropertyChanged([CallerMemberName] string? name = null)
=> PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
private bool Set<T>(ref T field, T newValue, [CallerMemberName] string? name = null)
{
if (EqualityComparer<T>.Default.Equals(field, newValue))
{
return false;
}
field = newValue;
NotifyPropertyChanged(name);
return true;
}
public enum Severity
{
None,
Warning,
Error
}
}
}
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