public MainViewModel(ModelHelpers modelHelpers)
{
ModelHelpers = modelHelpers;
TimerDates = new ObservableCollection <TimerDateModel>();
var backgroundRefresh = new Timer(TimeSpan.FromHours(1).TotalMilliseconds);
backgroundRefresh.Elapsed += (sender, args) => RefreshModel();
backgroundRefresh.Start();
modelHelpers.Gallifrey.VersionControl.UpdateStateChange += (sender, args) => NewVersionPresent();
modelHelpers.Gallifrey.BackendModifiedTimers += (sender, args) => BackendModification();
modelHelpers.Gallifrey.SettingsChanged += (sender, args) => SettingsChanged();
modelHelpers.Gallifrey.JiraConnection.LoggedIn += (sender, args) => UserLoggedIn();
modelHelpers.Gallifrey.JiraTimerCollection.GeneralTimerModification += (sender, args) => GeneralTimerModification();
modelHelpers.Gallifrey.DailyTrackingEvent += (sender, args) => DailyEvent();
modelHelpers.RefreshModelEvent += (sender, args) => RefreshModel();
modelHelpers.SelectRunningTimerEvent += (sender, args) => SelectRunningTimer();
modelHelpers.SelectTimerEvent += (sender, timerId) => SetSelectedTimer(timerId);
targetBarValues = new TargetBarValues(modelHelpers.Gallifrey);
}