private static void Initialize()
{
#if UNITY_EDITOR
if (EditorApplication.isCompiling || EditorApplication.isUpdating)
{
EditorApplication.delayCall += Initialize;
return;
}
#endif
isQuitting = false;
if (initialized)
{
return;
}
initialized = true;
#if UNITY_EDITOR
#if UNITY_2018_1_OR_NEWER
EditorApplication.quitting += SetApplicationIsQuitting;
#endif
#else
eventCatcher = InvisibleComponentProvider.GetOrCreate <MonoBehaviourEventCatcher>("ApplicationUtility/MonoBehaviourEventCatcher");
eventCatcher.OnApplicationQuitting += SetApplicationIsQuitting;
#endif
#if UNITY_EDITOR
EditorApplication.update += UpdateApplicationHasFocus;
#else
eventCatcher.OnApplicationLostFocus += HandleOnApplicationLostFocus;
eventCatcher.OnApplicationGainedFocus += HandleOnApplicationGainedFocus;
#endif
}
protected UnityEventFunctionsListener(UnityEventFunctions subscribeToEvents)
{
#if DEV_MODE && PI_ASSERTATIONS
Debug.Assert(subscribeToEvents != UnityEventFunctions.None, GetType().Name);
#endif
if (eventCatcher == null)
{
eventCatcher = InvisibleComponentProvider.GetOrCreate <MonoBehaviourEventCatcher>("EventFunctionsListener/MonoBehaviourEventCatcher");
// can be null if application is quitting
if (eventCatcher == null)
{
#if DEV_MODE && PI_ASSERTATIONS
Debug.Assert(ApplicationUtility.IsQuitting);
#endif
return;
}
}
subscribedEvents = subscribeToEvents;
if (subscribedEvents.HasFlag(UnityEventFunctions.Update))
{
eventCatcher.OnUpdate += Update;
}
if (subscribedEvents.HasFlag(UnityEventFunctions.OnApplicationQuit))
{
eventCatcher.OnApplicationQuitting += OnApplicationQuit;
}
if (subscribedEvents.HasFlag(UnityEventFunctions.OnApplicationGainedFocus))
{
eventCatcher.OnApplicationGainedFocus += OnApplicationGainedFocus;
}
if (subscribedEvents.HasFlag(UnityEventFunctions.OnApplicationLostFocus))
{
eventCatcher.OnApplicationLostFocus += OnApplicationLostFocus;
}
}