public void Dispose()
{
ThreadHelper.ThrowIfNotOnUIThread();
_activeWindowTracker?.Dispose();
_activeWindowTracker = null;
}
/// <summary>
/// Initializes a new instance of the <see cref="MainWindowControl"/> class.
/// </summary>
public MainWindowControl()
{
DataContext = _viewModel = new MainWindowControlViewModel();
InitializeComponent();
_activeWindowTracker = new ActiveWindowTracker();
_activeWindowTracker.PropertyChanged += ActiveWindowPropertyChanged;
var editorFormatMapService = VSServiceHelpers.GetMefExport <IEditorFormatMapService>();
var editorFormatMap = editorFormatMapService.GetEditorFormatMap("text");
editorFormatMap.FormatMappingChanged += (object s, FormatItemsEventArgs e) => UpdateClassifications(e.ChangedItems);
void UpdateClassifications(ReadOnlyCollection <string> definitionNames)
{
_viewModel.OnThemeChanged(definitionNames.ToLookup(name => name));
}
}