private bool GetIsChangedDeep(ITrackable trackable, HashSet <object> visited)
{
if (trackable == null)
{
return(false);
}
var trackedObject = trackable is ChangeTracker changeTracker
? changeTracker.GetTrackedObject()
: trackable;
if (trackedObject == null || visited.Contains(trackedObject))
{
return(false);
}
visited.Add(trackedObject);
if (trackedObject != trackable && trackedObject is ITrackable innerTrackable)
{
if (innerTrackable.GetIsChanged())
{
return(true);
}
}
else if (trackable.GetIsChanged())
{
return(true);
}
foreach (var prop in trackedObject.GetType().GetPropertiesEx().Where(x => x.CanGet && x.PropertyInfo.GetIndexParameters().Length == 0))
{
if (prop.Type.IsAssignableTo(typeof(ITrackableObject)) &&
GetIsChangedDeep(prop.Get(trackedObject) as ITrackableObject, visited))
{
return(true);
}
else if (prop.Type.IsAssignableTo(typeof(ITrackableCollection)))
{
if (!(prop.Get(trackedObject) is ITrackableCollection trackableList))
{
return(false);
}
if (trackableList.GetIsChanged())
{
return(true);
}
if (trackableList.ElementType.IsAssignableTo(typeof(ITrackableObject)))
{
foreach (ITrackableObject item in trackableList)
{
if (GetIsChangedDeep(item, visited))
{
return(true);
}
}
}
}
else if (prop.IsEnumerable)
{
foreach (var item in (IEnumerable)prop.Get(trackedObject))
{
if (item != null && item is ITrackableObject enumeratedTrackable &&
GetIsChangedDeep(enumeratedTrackable, visited))
{
return(true);
}
}
}
}
return(false);
}