private void DispatchLoadToExtensions()
{
if (Hierarchy != null)
{
var projectItem = VsUtils.GetProjectItem(Hierarchy, ItemId);
if (projectItem != null)
{
var fileContents = VSHelpers.GetTextFromVsTextLines(VsBuffer);
string newBufferContents;
List <ExtensionError> extensionErrors;
if (StandaloneXmlModelProvider.TryGetBufferViaExtensions(
projectItem, fileContents, out newBufferContents, out extensionErrors))
{
if (VSHelpers.CheckOutFilesIfEditable(ServiceProvider, new[] { FileName }))
{
VsUtils.SetTextForVsTextLines(VsBuffer, newBufferContents);
}
else
{
ErrorListHelper.LogExtensionErrors(
new List <ExtensionError>
{
new ExtensionError(
string.Format(
CultureInfo.CurrentCulture, Resources.ExtensionError_SourceControlLock,
Path.GetFileName(FileName)),
ErrorCodes.ExtensionsError_BufferNotEditable,
ExtensionErrorSeverity.Error)
},
projectItem);
}
}
}
}
}
public override bool CanEditXmlModel()
{
string moniker = null;
// first attempt to extract the file path of this XML Model
try
{
if (Uri != null)
{
moniker = Uri.LocalPath;
}
}
catch (Exception e)
{
Debug.Fail("Could not parse the URI of this XML model because of the exception: " + e.Message);
// note we get out of here quickly if this happens as we don't want to allow any cases where somehow documents.Count > 0
return(false);
}
if (!String.IsNullOrWhiteSpace(moniker))
{
return(VSHelpers.CheckOutFilesIfEditable(_serviceProvider, new[] { moniker }));
}
return(false);
}
public bool CreateAndLoadBuffer()
{
DestroyBuffer();
var pkg = PackageManager.Package as Package;
IServiceProvider serviceProvider = pkg;
var textLinesType = typeof(VSTextManagerInterop.IVsTextLines);
var riid = textLinesType.GUID;
var clsid = typeof(VSTextManagerInterop.VsTextBufferClass).GUID;
_underlyingBuffer = pkg.CreateInstance(ref clsid, ref riid, textLinesType);
Debug.Assert(_underlyingBuffer != null, "Failure while creating buffer.");
var buffer = _underlyingBuffer as VSTextManagerInterop.IVsTextLines;
Debug.Assert(buffer != null, "Why does buffer not implement IVsTextLines?");
var ows = buffer as IObjectWithSite;
if (ows != null)
{
ows.SetSite(serviceProvider.GetService(typeof(IOleServiceProvider)));
}
// We want to set the LanguageService SID explicitly to the XML Language Service.
// We need turn off GUID_VsBufferDetectLangSID before calling LoadDocData so that the
// TextBuffer does not do the work to detect the LanguageService SID from the file extension.
var userData = buffer as VSTextManagerInterop.IVsUserData;
if (userData != null)
{
var VsBufferDetectLangSID = new Guid("{17F375AC-C814-11d1-88AD-0000F87579D2}"); //GUID_VsBufferDetectLangSID;
VSErrorHandler.ThrowOnFailure(userData.SetData(ref VsBufferDetectLangSID, false));
}
var langSid = CommonPackageConstants.xmlEditorLanguageService;
VSErrorHandler.ThrowOnFailure(buffer.SetLanguageServiceID(ref langSid));
var persistDocData = buffer as IVsPersistDocData;
if (persistDocData != null)
{
persistDocData.LoadDocData(FileName);
var artifactUri = new Uri(FileName);
var artifact = PackageManager.Package.ModelManager.GetArtifact(artifactUri);
if (artifact != null &&
artifact.IsCodeGenArtifact)
{
var standaloneProvider = artifact.XmlModelProvider as StandaloneXmlModelProvider;
if (standaloneProvider.ExtensionErrors == null ||
standaloneProvider.ExtensionErrors.Count == 0)
{
// If there is a cached code gen artifact, it will have loaded its text buffer using extensions already.
// Therefore we can grab the text buffer from that artifact for our docdata buffer, and dispose the
// code gen artifact since it's using a XmlProvider that is standalone and won't be supported by the
// designer.
var projectItem = VsUtils.GetProjectItem(Hierarchy, ItemId);
if (projectItem != null)
{
if (VSHelpers.CheckOutFilesIfEditable(ServiceProvider, new[] { FileName }))
{
string artifactText = null;
using (var writer = new Utf8StringWriter())
{
artifact.XDocument.Save(writer, SaveOptions.None);
artifactText = writer.ToString();
}
if (!String.IsNullOrWhiteSpace(artifactText))
{
VsUtils.SetTextForVsTextLines(VsBuffer, artifactText);
}
}
else
{
ErrorListHelper.LogExtensionErrors(
new List <ExtensionError>
{
new ExtensionError(
string.Format(
CultureInfo.CurrentCulture, Resources.ExtensionError_SourceControlLock,
Path.GetFileName(FileName)),
ErrorCodes.ExtensionsError_BufferNotEditable,
ExtensionErrorSeverity.Error)
},
projectItem);
}
}
PackageManager.Package.ModelManager.ClearArtifact(artifactUri);
}
else
{
// If the extensions ran into errors whilst loading, we'll need to re-run extensions anyway so we ignore the cache
PackageManager.Package.ModelManager.ClearArtifact(artifactUri);
DispatchLoadToExtensions();
}
}
else
{
DispatchLoadToExtensions();
}
}
// DSL exposes the FileNameChanged event which we subscribe to so we can update the moniker inside
// the text buffer, which is required to update our model as well as keep the XmlModel in sync.
FileNameChanged += OnFileNameChanged;
RegisterUndoTracking();
return(true);
}