src/VisualStudio/Core/Def/Venus/ContainedLanguage.IVsContainedLanguage.cs - main - githubmirror/roslyn

src/VisualStudio/Core/Def/Venus/ContainedLanguage.IVsContainedLanguage.cs
97 строк3 KB
Cyrus Najmabadi
Update VS to use file scoped namespaces
28 фев 2024, 00:34
28 фев 2024, 00:343f632c7
// 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 Microsoft.VisualStudio.OLE.Interop;
using Microsoft.VisualStudio.Text.Editor;
using Microsoft.VisualStudio.TextManager.Interop;

namespace Microsoft.VisualStudio.LanguageServices.Implementation.Venus;

internal partial class ContainedLanguage : IVsContainedLanguage
{
    public int GetColorizer(out IVsColorizer colorizer)
    {
        // We have no legacy colorizer, and so we'll return E_NOTIMPL to opt out of using one
        colorizer = null;
        return VSConstants.E_NOTIMPL;
    }

    public int GetLanguageServiceID(out Guid guidLangService)
    {
        guidLangService = _languageServiceGuid;
        return VSConstants.S_OK;
    }

    public int GetTextViewFilter(
        IVsIntellisenseHost intellisenseHost,
        IOleCommandTarget nextCmdTarget,
        out IVsTextViewFilter textViewFilter)
    {
        var wpfTextView = GetViewFromIVsIntellisenseHost(intellisenseHost);

        if (wpfTextView == null)
        {
            textViewFilter = null;
            return VSConstants.E_FAIL;
        }

        textViewFilter = new VenusCommandFilter(wpfTextView, SubjectBuffer, nextCmdTarget, ComponentModel);

        return VSConstants.S_OK;
    }

    private IWpfTextView GetViewFromIVsIntellisenseHost(IVsIntellisenseHost intellisenseHost)
    {
        // The easiest way (unfortunately) is to get do reflection to get the view from the IVsIntellisenseHost.
        // In practice, the implementations we care about of this are just shim implementations from the editor.
        // The only alternative way to do this is to do very complicated watching of ITextView and IVsTextView
        // lifetimes to correlate them, but that requires running code in those code paths for all views which
        // seems a bit overkill for our needs.
        var field = intellisenseHost.GetType().GetField("_simpleTextViewWindow", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
        if (field == null)
        {
            return null;
        }

        if (field.GetValue(intellisenseHost) is not IVsTextView view)
        {
            return null;
        }

        return _editorAdaptersFactoryService.GetWpfTextView(view);
    }

    public int Refresh(uint refreshMode)
        => VSConstants.S_OK;

    public int SetBufferCoordinator(IVsTextBufferCoordinator pBC)
    {
        BufferCoordinator = pBC;
        return VSConstants.S_OK;
    }

    public int SetHost(IVsContainedLanguageHost host)
    {
        if (ContainedDocument.ContainedLanguageHost == host)
        {
            return VSConstants.S_OK;
        }

        ContainedDocument.ContainedLanguageHost = host;

        // Are we going away due to the contained language being disconnected?
        if (host == null)
        {
            OnDisconnect();
        }

        return VSConstants.S_OK;
    }

    public int WaitForReadyState()
        => VSConstants.S_OK;
}