private void OnFocusTrackerButtonClick(object sender, RoutedEventArgs e)
        {
            this.FocusTrackerButton = (ToolBarToggleButton)sender;
            var show = this.FocusTrackerButton.IsChecked.Value;

            if (show)
            {
                var vm = new FocusTrackerToolWindowViewModel();
                DebugConsoleViewModel.Instance.ToolWindows.Add(vm);
                vm.Removed += this.OnFocusTrackerRemoved;
            }
            else
            {
                var vm = DebugConsoleViewModel.Instance.ToolWindows.OfType<FocusTrackerToolWindowViewModel>().First();
                vm.Remove();
            }
        }
 private void OnLoaded(object sender, RoutedEventArgs routedEventArgs)
 {
     this.vm = (FocusTrackerToolWindowViewModel)this.DataContext;
     vm.FocusTracker = this.FocusVisualizer.FocusTracker;
 }