public bool TryFetch(OptionKey optionKey, out object value)
{
// This particular serializer is a bit strange, since we have to initially read things out on the UI thread.
// Therefore, we refresh the values in the constructor, meaning that this should never get called for our values.
if (_supportedOptions.Contains(optionKey.Option) && _languageMap.ContainsKey(optionKey.Language))
{
FatalError.ReportWithDumpAndCatch(new InvalidOperationException("Unexpected call to " + nameof(LanguageSettingsPersister) + "." + nameof(TryFetch)), ErrorSeverity.Diagnostic);
}
value = null;
return(false);
}
public LanguageSettingsPersister(
IThreadingContext threadingContext,
IVsTextManager4 textManager,
IGlobalOptionService globalOptions)
: base(threadingContext, assertIsForeground: true)
{
_textManager = textManager;
_globalOptions = globalOptions;
var languageMap = BidirectionalMap <string, Tuple <Guid> > .Empty;
InitializeSettingsForLanguage(LanguageNames.CSharp, Guids.CSharpLanguageServiceId);
InitializeSettingsForLanguage(LanguageNames.VisualBasic, Guids.VisualBasicLanguageServiceId);
InitializeSettingsForLanguage(InternalLanguageNames.TypeScript, new Guid("4a0dddb5-7a95-4fbf-97cc-616d07737a77"));
InitializeSettingsForLanguage("F#", new Guid("BC6DD5A5-D4D6-4dab-A00D-A51242DBAF1B"));
InitializeSettingsForLanguage("Xaml", new Guid("CD53C9A1-6BC2-412B-BE36-CC715ED8DD41"));
void InitializeSettingsForLanguage(string languageName, Guid languageGuid)
{
var languagePreferences = new LANGPREFERENCES3[1];
languagePreferences[0].guidLang = languageGuid;
// The function can potentially fail if that language service isn't installed
if (ErrorHandler.Succeeded(_textManager.GetUserPreferences4(pViewPrefs: null, pLangPrefs: languagePreferences, pColorPrefs: null)))
{
RefreshLanguageSettings(languagePreferences, languageName);
languageMap = languageMap.Add(languageName, Tuple.Create(languageGuid));
}
else
{
FatalError.ReportWithDumpAndCatch(new InvalidOperationException("GetUserPreferences4 failed"), ErrorSeverity.Diagnostic);
}
}
_languageMap = languageMap;
_textManagerEvents2Sink = ComEventSink.Advise <IVsTextManagerEvents4>(_textManager, this);
}
