My goal is to create an editor that mirrors the functionality of the standard Visual Studio text editor, including Syntax error underlining, Syntax highlighting, and Contencutal right-click options (e.g. “Go to Definition”) While I can successfully load file content into the editor, none of these standard features are present. I suspect this might be related to the ContentType of the ITextBuffer, but I am unsure of the precise role it plays in enabling these features. Currently, my implementation is hardcoded to work exclusively with C# content and files. In another project (not related to this one), I implemented some standard features by associating the editor with .cs file extensions, but this is not a viable solution for my current project. I cannot use this association because it would interfere with the normal IDE experience, preventing me from editing or interacting with .cs files as usual. I am looking for a solution or understanding of this issue, or how I can get lower level information of what is going on under the hood when I set a Content Type. I have also included a screenshot of what the result looks like on my end:
You can see where I try to inspect the tags on the buffer in the commented out code where I use the ITextBuffer. There might be a bug but I am probably just using this wrong or there are no tags being applied to the buffer. Additionally, I have used IVsTextBuffer with IVsTextView, where I set the language service using SetLanguageServiceID(Guid) on the IVsTextBuffer. While I am able to load the content, I still encounter the same problem: file content is loaded without any features. For setting the language service, I passed in the GUID of the C# language service, which I found in examples: 694DD9B6-B865-4C5B-AD85-86356E9C88DC.
What I did to set up the project:
Create new project in VS2022, select C# VSIX project type, add a Tool Window to the project, press f5 which will load the experimental instance, tool window should be available in experimental instance under View->Other Windows
MyAnnotateV2Package.cs:
using Microsoft.VisualStudio.Editor;
using Microsoft.VisualStudio.Shell;
using System;
using System.Runtime.InteropServices;
using System.Threading;
using Task = System.Threading.Tasks.Task;
namespace MyAnnotateV2
{
[PackageRegistration(UseManagedResourcesOnly = true, AllowsBackgroundLoading = true)]
[Guid(MyAnnotateV2Package.PackageGuidString)]
[ProvideMenuResource("Menus.ctmenu", 1)]
[ProvideToolWindow(typeof(ToolWindow1))]
public sealed class MyAnnotateV2Package : AsyncPackage
{
public const string PackageGuidString = "f56b58be-0719-4e37-8147-b824c8566701";
#region Package Members
protected override async Task InitializeAsync(CancellationToken cancellationToken, IProgress<ServiceProgressData> progress)
{
await this.JoinableTaskFactory.SwitchToMainThreadAsync(cancellationToken);
await ToolWindow1Command.InitializeAsync(this);
}
#endregion
}
}
ToolWindow1.cs:
using Microsoft.VisualStudio.Shell;
using System;
using System.Runtime.InteropServices;
namespace MyAnnotateV2
{
[Guid("d13s0712-4527-4b27-8920-6b38dc41a26e")]
public class ToolWindow1 : ToolWindowPane
{
public ToolWindow1() : base(null)
{
this.Caption = "ToolWindow1";
// Pass the service provider to the control
this.Content = new ToolWindow1Control(false);
}
}
}
ToolWindow1Command.cs:
using Microsoft.VisualStudio.Shell;
using Microsoft.VisualStudio.Shell.Interop;
using System;
using System.ComponentModel.Design;
using System.Globalization;
using System.Threading;
using System.Threading.Tasks;
using Task = System.Threading.Tasks.Task;
namespace MyAnnotateV2
{
internal sealed class ToolWindow1Command
{
public const int CommandId = 0x0100;
public static readonly Guid CommandSet = new Guid("10e1cf87-4456-493c-8cf6-92d8bceb4d21");
private readonly AsyncPackage package;
private ToolWindow1Command(AsyncPackage package, OleMenuCommandService commandService)
{
this.package = package ?? throw new ArgumentNullException(nameof(package));
commandService = commandService ?? throw new ArgumentNullException(nameof(commandService));
var menuCommandID = new CommandID(CommandSet, CommandId);
var menuItem = new MenuCommand(this.Execute, menuCommandID);
commandService.AddCommand(menuItem);
}
public static ToolWindow1Command Instance
{
get;
private set;
}
private Microsoft.VisualStudio.Shell.IAsyncServiceProvider ServiceProvider
{
get
{
return this.package;
}
}
public static async Task InitializeAsync(AsyncPackage package)
{
await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync(package.DisposalToken);
OleMenuCommandService commandService = await package.GetServiceAsync(typeof(IMenuCommandService)) as OleMenuCommandService;
Instance = new ToolWindow1Command(package, commandService);
}
private void Execute(object sender, EventArgs e)
{
ThreadHelper.ThrowIfNotOnUIThread();
ToolWindowPane window = this.package.FindToolWindow(typeof(ToolWindow1), 0, true);
if ((null == window) || (null == window.Frame))
{
throw new NotSupportedException("Cannot create tool window");
}
IVsWindowFrame windowFrame = (IVsWindowFrame)window.Frame;
Microsoft.VisualStudio.ErrorHandler.ThrowOnFailure(windowFrame.Show());
}
}
}
ToolWindow1Control.xaml:
<UserControl x:Class="MyAnnotateV2.ToolWindow1Control"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:vsshell="clr-namespace:Microsoft.VisualStudio.Shell;assembly=Microsoft.VisualStudio.Shell.15.0"
Background="{DynamicResource {x:Static vsshell:VsBrushes.WindowKey}}"
Foreground="{DynamicResource {x:Static vsshell:VsBrushes.WindowTextKey}}"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300"
Name="MyToolWindow">
<Grid>
<Grid.ColumnDefinitions>
<!-- First column width set to 30% -->
<ColumnDefinition Width="2*" />
<!-- GridSplitter column -->
<ColumnDefinition Width="Auto" />
<!-- Second column width set to 70% -->
<ColumnDefinition Width="8*" />
</Grid.ColumnDefinitions>
<!-- Left Panel Content -->
<StackPanel Orientation="Vertical" Grid.Column="0" VerticalAlignment="Stretch">
<TextBlock Margin="10" HorizontalAlignment="Center">ToolWindow1</TextBlock>
<Button Content="Click me!" Click="button1_Click" Width="120" Height="80" Name="button1"/>
</StackPanel>
<!-- GridSplitter -->
<GridSplitter Grid.Column="1" Width="5" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Background="Gray" />
<!-- Right Panel Content (Empty) -->
<Grid Grid.Column="2" Name="RightPanel" VerticalAlignment="Stretch">
</Grid>
</Grid>
</UserControl>
ToolWindow1Control.xaml.cs:
using System;
using System.Collections;
using System.Diagnostics.CodeAnalysis;
using System.IO;
using System.IO.Packaging;
using System.Windows;
using System.Windows.Controls;
using EnvDTE;
using Microsoft.VisualStudio.ComponentModelHost;
using Microsoft.VisualStudio.Editor;
using Microsoft.VisualStudio.Shell;
using Microsoft.VisualStudio.Shell.Interop;
using Microsoft.VisualStudio.Text;
using Microsoft.VisualStudio.Text.Classification;
using Microsoft.VisualStudio.Text.Editor;
using Microsoft.VisualStudio.Text.Tagging;
using Microsoft.VisualStudio.TextManager.Interop;
using Microsoft.VisualStudio.Utilities;
using System.ComponentModel.Composition;
using System.Diagnostics;
using Microsoft.VisualStudio.Language.CodeLens.Remoting;
namespace MyAnnotateV2
{
using IOleServiceProvider = Microsoft.VisualStudio.OLE.Interop.IServiceProvider;
public partial class ToolWindow1Control : UserControl
{
private readonly object _provider;
public ToolWindow1Control(bool comBased)
{
_provider = Microsoft.VisualStudio.Shell.Package.GetGlobalService(typeof(IOleServiceProvider));
this.InitializeComponent();
InitializeEditor("C:Your\\Local\\Path\\To\\Program.cs");
}
[SuppressMessage("Microsoft.Globalization", "CA1300:SpecifyMessageBoxOptions", Justification = "Sample code")]
[SuppressMessage("StyleCop.CSharp.NamingRules", "SA1300:ElementMustBeginWithUpperCaseLetter", Justification = "Default event handler naming pattern")]
private void button1_Click(object sender, RoutedEventArgs e)
{
MessageBox.Show(
string.Format(System.Globalization.CultureInfo.CurrentUICulture, "Invoked '{0}'", this.ToString()),
"ToolWindow1!!!!");
}
// factory for creating methods: https://learn.microsoft.com/en-us/dotnet/api/microsoft.visualstudio.text.editor.itexteditorfactoryservice?view=visualstudiosdk-2022
//[Import] IBufferTagAggregatorFactoryService tagFactory = null;
//[Import] IClassificationTypeRegistryService ClassificationRegistry = null;
//[Import] ITextBufferFactoryService textBufferFactory = null;
//[Import] ITextEditorFactoryService textEditorFactory = null;
//[Import] IContentTypeRegistryService contentTypeRegistry = null;
private void InitializeEditor(string filePath)
{
var componentModel = (IComponentModel)Microsoft.VisualStudio.Shell.Package.GetGlobalService(typeof(SComponentModel));
var editorAdapterFactory = componentModel.GetService<IVsEditorAdaptersFactoryService>();
var textBufferFactory = componentModel.GetService<ITextBufferFactoryService>();
var textEditorFactory = componentModel.GetService<ITextEditorFactoryService>();
var contentTypeRegistry = componentModel.GetService<IContentTypeRegistryService>();
var tagFactory = componentModel.GetService<IBufferTagAggregatorFactoryService>();
var viewTagFactory = componentModel.GetService<IViewTagAggregatorFactoryService>();
var fileExtensionRegistryFactory = componentModel.GetService<IFileExtensionRegistryService>();
var classifier = componentModel.GetService<IClassifierAggregatorService>();
var contentT = fileExtensionRegistryFactory.GetContentTypeForExtension(".cs");
//var oleServiceProvider = Microsoft.VisualStudio.Shell.Package.GetGlobalService(typeof(SVsServiceProvider)) as Microsoft.VisualStudio.OLE.Interop.IServiceProvider;
// Create the text buffer and initialize it with content from the file
// https://learn.microsoft.com/en-us/dotnet/api/microsoft.visualstudio.text.itextbufferfactoryservice?view=visualstudiosdk-2022
string fileContent = File.ReadAllText(filePath);
IContentType contentType = contentTypeRegistry.GetContentType("CSharp");
ITextBuffer textBuffer = textBufferFactory.CreateTextBuffer(fileContent, contentType);
IWpfTextView textView = textEditorFactory.CreateTextView(textBuffer);
setAllTextViewOptions(textView);
IWpfTextViewHost textViewHost = textEditorFactory.CreateTextViewHost(textView, false);
var textViewElement = textViewHost.HostControl;
textViewElement.HorizontalAlignment = HorizontalAlignment.Stretch;
textViewElement.VerticalAlignment = VerticalAlignment.Stretch;
// My attempt at getting tags from text buffer
//ITagAggregator<IClassificationTag> tagAggregator = viewTagFactory.CreateTagAggregator<IClassificationTag>(textView);
//ITextSnapshot currSnapshot = textView.TextSnapshot;
//SnapshotSpan fullTextSnapshotSpan = new SnapshotSpan(currSnapshot, 0, 330); // Length of snapshot is 340
//Span fullSpan = fullTextSnapshotSpan.Span;
//IEnumerable enumerableTags = tagAggregator.GetTags(fullTextSnapshotSpan);
//IEnumerator enumeratedTags = enumerableTags.GetEnumerator();
//var nextOperationResult = enumeratedTags.MoveNext();
//var currElement = enumeratedTags.Current;
// Add the HostControl of the text view host to the RightPanel
RightPanel.Children.Add(textViewHost.HostControl);
}
private void setAllTextViewOptions(ITextView textView)
{
textView.Options.SetOptionValue(DefaultTextViewHostOptions.VerticalScrollBarName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.HorizontalScrollBarName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.GlyphMarginName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.SuggestionMarginName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.SelectionMarginName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.LineNumberMarginName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.ChangeTrackingName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.OutliningMarginName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.ZoomControlName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.IsInContrastModeName, false); // Set true if needed
textView.Options.SetOptionValue(DefaultTextViewHostOptions.IsInHighContrastThemeName, false); // Set true if needed
textView.Options.SetOptionValue(DefaultTextViewHostOptions.ShowScrollBarAnnotationsOptionName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.ShowEnhancedScrollBarOptionName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.ShowChangeTrackingMarginOptionName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.ChangeTrackingMarginWidthOptionName, 5.0); // Adjust width as needed
textView.Options.SetOptionValue(DefaultTextViewHostOptions.ShowPreviewOptionName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.PreviewSizeOptionName, 5); // Adjust preview size as needed
textView.Options.SetOptionValue(DefaultTextViewHostOptions.ShowCaretPositionOptionName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.SourceImageMarginEnabledOptionName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.SourceImageMarginWidthOptionName, 20.0); // Adjust width as needed
textView.Options.SetOptionValue(DefaultTextViewHostOptions.ShowMarksOptionName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.ShowErrorsOptionName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.MarkMarginWidthOptionName, 5.0); // Adjust width as needed
textView.Options.SetOptionValue(DefaultTextViewHostOptions.ErrorMarginWidthOptionName, 5.0); // Adjust width as needed
textView.Options.SetOptionValue(DefaultTextViewHostOptions.EnableFileHealthIndicatorOptionName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.RowColMarginOptionName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.SelectionStateMarginOptionName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.InsertModeMarginOptionName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.IndentationCharacterMarginOptionName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.UpdateIndentationCharacterOnEditOptionName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.LineEndingMarginOptionName, true);
textView.Options.SetOptionValue(DefaultTextViewHostOptions.EditingStateMarginOptionName, true);
}
Program.cs:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace TestSVN
{
class Program
{
static void Main(string[] args)
{
// hello world
// error below is intentional to test buffer functionality
int hello
}
}
}